332354 + Interview Questions in Secondary School in Math Page 182 InterviewSolution

9051.	If x- 9-6√5 then x+√x is equal to
Answer» ANSWER: Answer Given, x=9+4 5 => x 1 = 9+4 5 1 × 9−4 5 9−4 5 => x 1 =9−4 5 Let y= x − x 1 Squaring both SIDES, y 2 =x+ x 1 −2 =>y 2 =9+4 5 +9−4 5 −2 y=+4,−4

9051.

If x- 9-6√5 then x+√x is equal to

Answer»

ANSWER:

Answer

Given,

x=9+4

5

=>

x

1

=

9+4

5

1

×

9−4

5

9−4

5

=>

x

1

=9−4

5

Let y=

x

−

x

1

Squaring both SIDES,

y

2

=x+

x

1

−2

=>y

2

=9+4

5

+9−4

5

−2

y=+4,−4

Discussion

9052.	Check whether g(x)=x+3 is a factor of the polynomial f(x)=x^5+3x^4-x^3-3x^2+5x+15.
Answer» ANSWER: 0 is the answer... Step-by-step explanation: g(x)=x+3=0 =x=-3 f(x)=x⁵+3x⁴-x³-3x²+5x+15 =(-3)⁵+3(-3)⁴-(-3)³-3(-3)²+5(-3)+15 =-243+3(81)-(-27)-3(9)-15+15 =-243+243+27-27-15+15 =0+0+0 =0

9052.

Check whether g(x)=x+3 is a factor of the polynomial f(x)=x^5+3x^4-x^3-3x^2+5x+15.

Answer»

ANSWER:

0 is the answer...

Step-by-step explanation:

g(x)=x+3=0

=x=-3

f(x)=x⁵+3x⁴-x³-3x²+5x+15

=(-3)⁵+3(-3)⁴-(-3)³-3(-3)²+5(-3)+15

=-243+3(81)-(-27)-3(9)-15+15

=-243+243+27-27-15+15

=0+0+0

=0

Discussion

9053.	15) If α and β are the zeroes of the polynomial 2 – 3x – x2 then α + β =
Answer» Answer: α + β = -3 Step-by-step EXPLANATION: -x² -3X + 2 can be SAID to be of form ax² + bx + c where a = -1, b = -3, c = 2 α + β = -b/a = - ( -3 ) / -1 = -3 So α + β = -3 Please mark as brainliest

9053.

15) If α and β are the zeroes of the polynomial 2 – 3x – x2 then α + β =

Answer»

Answer:

α + β = -3

Step-by-step EXPLANATION:

-x² -3X + 2 can be SAID to be of form ax² + bx + c where a = -1, b = -3, c = 2

α + β = -b/a = - ( -3 ) / -1 = -3

So α + β = -3

Please mark as brainliest

Discussion

9054.	Help me out with this question please.
Answer» Answer: *they* *are* *same* *NUMBER* we *GIVE* *negative* *SIGN* at *numerator* *also* *and* on *denominator* also or front of that number. the value is same everywhere**

9054.

Help me out with this question please.

Answer»

Answer:

they are same NUMBER we GIVE negative SIGN at numerator also and on denominator also or front of that number. the value is same everywhere

Discussion

9055.	Help !!! Spam = report....
Answer» ANSWER: B Step-by-step explanation: the correct answer for your QUESTION is OPTION B

9055.

Help !!! Spam = report....

Answer»

ANSWER:

B

Step-by-step explanation:

the correct answer for your QUESTION is OPTION B

Discussion

9056.	The standard form of the quratic equation 2(x+3)=2x2isplz answer me fast guys
Answer» 2 =2x−3 STANDARD form: AX 2 +bx+c=0 Converting the GIVEN EQUATION to standard form, we get x 2 −2x+3=0

9056.

The standard form of the quratic equation 2(x+3)=2x2isplz answer me fast guys

Answer»

2

=2x−3

STANDARD form: AX

2

+bx+c=0

Converting the GIVEN EQUATION to standard form, we get

x

2

−2x+3=0

Discussion

9057.	To fill a swimming pool two pipes are to be used. If the pipe of larger diameter is used for 4 hours and the pipe of smaller diameter for 9 hours, only half the pool can be filled. Find, how long it would take for each pipe to fill the pool separately, if the pipe of smaller diameter takes 10 hours more than the pipe of larger diameter to fill the pool.
Answer» $\huge\underline{\underline{\color{red}{\bf\pmb{Answer}}}}$ Let the total time taken by the larger PIPE to FILL the tank ⇒ 'x hours So, in 1 hour it would fill ⇒ $\frac{1}{x}$ Let the total time taken by smaller pipe to fill the tank ⇒ 'y' hours So, in 1 hour it would fill ⇒ $\frac{1}{y}$ y ⇒ 10 + x -----------------(1) $\frac{<klux>4</klux>}{x} +\frac{9}{y} ⇒ \frac{1}{2}$ SUBSTITUTE Eq.(1) in Eq.(2) $\frac{4}{x} + \frac{9}{10+x} ⇒ \frac{1}{2}$ x² - 16X -80 ⇒ 0 (x - 20) ( x + 4 ) ⇒ 0 Neglecting x = -4 as time cannot be negative. ∴ Time taken by larger tap ⇒ 20 hours ∴ Time taken by smaller tap ⇒ 30 hours ${\huge{\textbf{\textsf{{\color{navy}{❤Tha}}{\purple{nk}}{\pink{You❤}}}}}}$ ___________________________

9057.

To fill a swimming pool two pipes are to be used. If the pipe of larger diameter is used for 4 hours and the pipe of smaller diameter for 9 hours, only half the pool can be filled. Find, how long it would take for each pipe to fill the pool separately, if the pipe of smaller diameter takes 10 hours more than the pipe of larger diameter to fill the pool.

Answer»

$\huge\underline{\underline{\color{red}{\bf\pmb{Answer}}}}$

Let the total time taken by the larger PIPE to FILL the tank ⇒ 'x hours

So, in 1 hour it would fill ⇒ $\frac{1}{x}$

Let the total time taken by smaller pipe to fill the tank ⇒ 'y' hours
So, in 1 hour it would fill ⇒ $\frac{1}{y}$

y ⇒ 10 + x -----------------(1)

$\frac{<klux>4</klux>}{x} +\frac{9}{y} ⇒ \frac{1}{2}$

SUBSTITUTE Eq.(1) in Eq.(2)

$\frac{4}{x} + \frac{9}{10+x} ⇒ \frac{1}{2}$

x² - 16X -80 ⇒ 0

(x - 20) ( x + 4 ) ⇒ 0

Neglecting x = -4 as time cannot be negative.

∴ Time taken by larger tap ⇒ 20 hours

∴ Time taken by smaller tap ⇒ 30 hours

${\huge{\textbf{\textsf{{\color{navy}{❤Tha}}{\purple{nk}}{\pink{You❤}}}}}}$

___________________________

Discussion

9058.	Please help me answer it quickly answer for 5o points
Answer» Answer: 7 Simplify 8/24 = 1/3 1/3 X 7/7 = 7/21 ans = 7 Hope it HELPS PLS MARK me as BRAINLIEST

9058.

Please help me answer it quickly answer for 5o points

Answer»

Answer:

7

Simplify 8/24 = 1/3

1/3 X 7/7 = 7/21

ans = 7

Hope it HELPS

PLS MARK me as BRAINLIEST

Discussion

9059.	Prove that 5√3-11/7 is an irrational number
Answer» ANSWER: because of the PROPERTY of irrational NUMBERS Step-by-step explanation: i.e. difference of a rational and an irrational numbers is ALWAYS irrational

9059.

Prove that 5√3-11/7 is an irrational number

Answer»

ANSWER:

because of the PROPERTY of irrational NUMBERS

Step-by-step explanation:

i.e.

difference of a rational and an irrational numbers is ALWAYS irrational

Discussion

9060.	A train travels at a certain average speed for a distance of 54 km and then travels a distance of 63 km at an average speed of 6 km/h more than the first speed. If it takes 3 hours to complete the total journey, what is its first speed?
Answer» Step-by-step explanation: A train travels at a certain average SPEED for a DISTANCE of 54 km and then travels a distance of 63 km at an average speed of 6 km/h more than the first speed. If it takes 3 hours to complete the total journey, what is its first speed? HENCE, the speed of the train to COVER 54 km or its first speed is 36 km/h.

9060.

A train travels at a certain average speed for a distance of 54 km and then travels a distance of 63 km at an average speed of 6 km/h more than the first speed. If it takes 3 hours to complete the total journey, what is its first speed?

Answer»

Step-by-step explanation:

A train travels at a certain average SPEED for a DISTANCE of 54 km and then travels a distance of 63 km at an average speed of 6 km/h more than the first speed. If it takes 3 hours to complete the total journey, what is its first speed? HENCE, the speed of the train to COVER 54 km or its first speed is 36 km/h.

Discussion

9061.	How many numbers amonsgst the Numbers 11 to 50 are rhere which are exactly divisible by 7 not by 3 ?(1). Two(2). Fore(3). Five(4). Six
Answer» Answer: FOUR Step-by-step EXPLANATION: HOPE IT HELPS U PLEASE MAKE ME BRAINLIEST

9061.

How many numbers amonsgst the Numbers 11 to 50 are rhere which are exactly divisible by 7 not by 3 ?(1). Two(2). Fore(3). Five(4). Six

Answer»

Answer:

FOUR

Step-by-step EXPLANATION:

HOPE IT HELPS U PLEASE MAKE ME BRAINLIEST

Discussion

9062.	Simplify : 125 + (-450)
Answer» Answer: 125+(-450) 125-450 =-325

9062.

Simplify : 125 + (-450)

Answer»

Answer:

125+(-450)

125-450

=-325

Discussion

9063.	2-✓5=? answer in detail plz
Answer» ANSWER: Step-by-step explanation: 2 = 2X = 2x 2.34 = 4.68 =4

9063.

2-✓5=? answer in detail plz

Answer»

ANSWER:

Step-by-step explanation:

2 = 2X

= 2x 2.34

= 4.68

=4

Discussion

9064.	write the 6digit number in which none of the digit is less than 3 and whose sum of the digits in unit period is 12.
Answer» ANSWER: zblzjovhoz hchpaftuaayiac4uaroxaiys

9064.

write the 6digit number in which none of the digit is less than 3 and whose sum of the digits in unit period is 12.

Answer»

ANSWER:

zblzjovhoz hchpaftuaayiac4uaroxaiys

Discussion

9065.	In a flight of 2800 km, an aircraft was slowed down due to bad weather. Its average speed is reduced by 100 km/h and time increased by 30 minutes. Find the original duration of the flight
Answer» Question : In a flight of 2800 km, an aircraft was slowed down due to bad weather. Its AVERAGE speed is REDUCED by 100 km/h and time increased by 30 minutes. FIND the original duration of the flight To Find : The original duration of the flight GivEn Data : Average speed of the flight was reduced by 100 km/hr Time increased by 30 minutes Let us assume : The original speed of the flight be x Solution : Distance covered = 2800 km Now according to the formula to get time we see Time = Distance/Speed Time = 2800/x hr Given that the speed is decreased by 100 km/hr = x - 100 km Again, Time travel at reduced speed = Distance/Speed → 2800/(x - 100) Time taken = 30 mins → 1/2 hr So, $\sf \looparrowright \frac{2800}{x - 100} - \frac{2800}{x} = \frac{1}{2}$ $\sf \looparrowright \frac{2800x}{x(x - 100)} - \frac{2800(x - 100)}{x(x - 100)} = \frac{1}{2}$ $\sf \looparrowright \frac{2800}{ {x}^{2} - 100x} - \frac{2800x - 280000}{ {x}^{2} - 100x } = \frac{1}{2}$ $\sf \looparrowright \frac{2800x - 2800x + 280000}{ {x}^{2} - 100x } = \frac{1}{2}$ Now to cancel 2800x from 2800x $\sf \looparrowright\frac{ \cancel{2800} - \cancel{2800} + 280000}{ {x}^{2} - 100x} = \frac{1}{2}$ $\sf \looparrowright \frac{280000}{ {x}^{2} - 100 } = \frac{1}{2}$ By cross multiplying we get $\sf \looparrowright2 \times 280000 = {x}^{2} - 100$ $\sf \looparrowright560000 = {x}^{2} - 100$ We need to take 0 for factorisation $\sf \looparrowright {x}^{2} - 100x - 560000 = 0$ Now we have to split the middle term $\sf \looparrowright {x}^{2} - (800 - <klux>700</klux>)x - 560000 = 0$ $\sf \looparrowright {x}^{2} - 800x + 700x - 560000 = 0$ We have to take the common in them and then we can factorise $\sf \looparrowright x(x - 800) + 700(x - 800) = 0$ Taking (x - 800) as common we get $\sf \looparrowright(x - 800)(x + 700) = 0$ Now we can see that x - 800 = 0 x = 800 x + 700 = 0 x = - 700 As we know that speed cannot be NEGATIVE so the original speed is 800 Hence, the original speed of the flight is 800 km/h Now, the time taken = 2800/x Putting x's value we get Time taken = 2800/800 = 7/2 hrs → 3 hr 30 mins ∴ The time taken is 3 hr 30 mins Regards # BeBrainly

9065.

In a flight of 2800 km, an aircraft was slowed down due to bad weather. Its average speed is reduced by 100 km/h and time increased by 30 minutes. Find the original duration of the flight

Answer»

Question :

In a flight of 2800 km, an aircraft was slowed down due to bad weather. Its AVERAGE speed is REDUCED by 100 km/h and time increased by 30 minutes. FIND the original duration of the flight

To Find :

The original duration of the flight

GivEn Data :

Average speed of the flight was reduced by 100 km/hr

Time increased by 30 minutes

Let us assume :

The original speed of the flight be x

Solution :

Distance covered = 2800 km

Now according to the formula to get time we see

Time = Distance/Speed

Time = 2800/x hr

Given that the speed is decreased by 100 km/hr = x - 100 km

Again,

Time travel at reduced speed = Distance/Speed → 2800/(x - 100)

Time taken = 30 mins → 1/2 hr

So,

$\sf \looparrowright \frac{2800}{x - 100} - \frac{2800}{x} = \frac{1}{2}$

$\sf \looparrowright \frac{2800x}{x(x - 100)} - \frac{2800(x - 100)}{x(x - 100)} = \frac{1}{2}$

$\sf \looparrowright \frac{2800}{ {x}^{2} - 100x} - \frac{2800x - 280000}{ {x}^{2} - 100x } = \frac{1}{2}$

$\sf \looparrowright \frac{2800x - 2800x + 280000}{ {x}^{2} - 100x } = \frac{1}{2}$

Now to cancel 2800x from 2800x

$\sf \looparrowright\frac{ \cancel{2800} - \cancel{2800} + 280000}{ {x}^{2} - 100x} = \frac{1}{2}$

$\sf \looparrowright \frac{280000}{ {x}^{2} - 100 } = \frac{1}{2}$

By cross multiplying we get

$\sf \looparrowright2 \times 280000 = {x}^{2} - 100$

$\sf \looparrowright560000 = {x}^{2} - 100$

We need to take 0 for factorisation

$\sf \looparrowright {x}^{2} - 100x - 560000 = 0$

Now we have to split the middle term

$\sf \looparrowright {x}^{2} - (800 - <klux>700</klux>)x - 560000 = 0$

$\sf \looparrowright {x}^{2} - 800x + 700x - 560000 = 0$

We have to take the common in them and then we can factorise

$\sf \looparrowright x(x - 800) + 700(x - 800) = 0$

Taking (x - 800) as common we get

$\sf \looparrowright(x - 800)(x + 700) = 0$

Now we can see that

x - 800 = 0

x = 800

x + 700 = 0

x = - 700

As we know that speed cannot be NEGATIVE so the original speed is 800

Hence, the original speed of the flight is 800 km/h

Now,

the time taken = 2800/x

Putting x's value we get

Time taken = 2800/800 = 7/2 hrs → 3 hr 30 mins

∴ The time taken is 3 hr 30 mins

Regards

# BeBrainly

Discussion

9066.	After missing several classes for Discrete Mathematics (MTH 2204), Tony Cuttz decided to put down his bottle of Johnny Walker and hit the books. He vowed that for the next 7 days that he will finish all his home work and also get at least 7 hours of sleep quality sleep. Suppose tony has completed the 7 days. Express logically, state the domain and translate into English the negation of his vow. (n.b, questions are to be answered based on the negation of his vows)
Answer» ANSWER: vhsryyauiuttuisutktuktidtistuistidtustusurisuirz7itiutis

9066.

After missing several classes for Discrete Mathematics (MTH 2204), Tony Cuttz decided to put down his bottle of Johnny Walker and hit the books. He vowed that for the next 7 days that he will finish all his home work and also get at least 7 hours of sleep quality sleep. Suppose tony has completed the 7 days. Express logically, state the domain and translate into English the negation of his vow. (n.b, questions are to be answered based on the negation of his vows)

Answer»

ANSWER:

vhsryyauiuttuisutktuktidtistuistidtustusurisuirz7itiutis

Discussion

9067.	-ɴᴀᴍᴇ ᴛʜᴇ sʏᴍʙᴏʟ - "$" ?(≧∇≦)/
Answer» Step-by-step explanation: Pound sign or Pound. Pound sign or pound are the most common NAMES used in the United States, where the '#' key on a phone is commonly referred to as the pound key or simply pound. Dialing INSTRUCTIONS to an extension such as #77, for example, can be READ as "pound seven seven".

9067.

-ɴᴀᴍᴇ ᴛʜᴇ sʏᴍʙᴏʟ - "$" ?(≧∇≦)/

Answer»

Step-by-step explanation:

Pound sign or Pound. Pound sign or pound are the most common NAMES used in the United States, where the '#' key on a phone is commonly referred to as the pound key or simply pound. Dialing INSTRUCTIONS to an extension such as #77, for example, can be READ as "pound seven seven".

Discussion

9068.	While measuring the length of a knitting needle the readings on the scale are 4.0 cm and 24.5 cm. what is the needle?
Answer» ANSWER: HI BRO I am JP the GAMER how are you bro

9068.

While measuring the length of a knitting needle the readings on the scale are 4.0 cm and 24.5 cm. what is the needle?

Answer»

ANSWER:

HI BRO I am JP the GAMER how are you bro

Discussion

9069.	A rectangular park is to be designed whose breadth is 3 m less than its length. Its area is to be 4 square metres more than the area of a park that has already been made in the shape of an isosceles triangle with its base as the breadth of the rectangular park and of altitude 12 m. Find the length and breadth of the rectangular park
Answer» Answer: *HOPE it helps!! Mark this answer as brainliest if u found it useful and follow* *me for quick and accurate answers...* Step-by-step explanation: Here, Length of Rectangular PARK = L BREADTH of Rectangular Park = L - 3 Altitude of Triangular Park = 12 Breadth of Triangular Park = L - 4 Now, AREA of RECTANGLE =L (L - 3) Area of triangle = 1/2 × 12(L - 3) Area of rectangle - Area of triangle =4 ⇒L (L - 3) - 1/2 × 12(L - 3) =4 ⇒L² - 9L + 14 = 0 ⇒(L - 2) (L - 7) = 0 ⇒L = 2,7 Since, breadth is L - 3 , L ≠ 2 ∴ L=7m & breadth =7 - 3 = 4m

9069.

A rectangular park is to be designed whose breadth is 3 m less than its length. Its area is to be 4 square metres more than the area of a park that has already been made in the shape of an isosceles triangle with its base as the breadth of the rectangular park and of altitude 12 m. Find the length and breadth of the rectangular park

Answer»

Answer:

HOPE it helps!! Mark this answer as brainliest if u found it useful and follow me for quick and accurate answers...

Step-by-step explanation:

Here, Length of Rectangular PARK = L

BREADTH of Rectangular Park = L - 3

Altitude of Triangular Park = 12

Breadth of Triangular Park = L - 4

Now,

AREA of RECTANGLE =L (L - 3)

Area of triangle = 1/2 × 12(L - 3)

Area of rectangle - Area of triangle =4

⇒L (L - 3) - 1/2 × 12(L - 3) =4

⇒L² - 9L + 14 = 0

⇒(L - 2) (L - 7) = 0

⇒L = 2,7

Since, breadth is L - 3 , L ≠ 2

∴ L=7m & breadth =7 - 3 = 4m

Discussion

9070.	Find five rational numbers between -2/3 and -1/5?
Answer» Answer: The FORMULA for FINDING rational NUMBER between two rational number is 1/2(a+b) Step-by-step explanation:* 1/2 [-2/3+(-1/5]

9070.

Find five rational numbers between -2/3 and -1/5?

Answer»

Answer:

The FORMULA for FINDING rational NUMBER between two rational number is 1/2*(a+b)

Step-by-step explanation:

1/2 [-2/3+(-1/5]

Discussion

9071.	Root2 upon root5 + root3
Answer» ANSWER: ggfocyiydoydpcyodxdu custom d means ROOT 13 or root 10

9071.

Root2 upon root5 + root3

Answer»

ANSWER:

ggfocyiydoydpcyodxdu custom d means ROOT 13 or root 10

Discussion

9072.	Give the equation of four lines passing through ( -5, 25)
Answer» Answer: Please subscribe my you TUBE channel SHORT tricks with PARTH Agarwal you will get Short tricks of MATHEMATICS on my channel

9072.

Give the equation of four lines passing through ( -5, 25)

Answer»

Answer:

Please subscribe my you TUBE channel SHORT tricks with PARTH Agarwal you will get Short tricks of MATHEMATICS on my channel

Discussion

9073.	Object distance and image distance of a lens are -60 cm and -20 cm respectively,then the magnification of lens will beA. -0.33B. +3.0C.+0.33D. +4.0
Answer» ANSWER: answer is d Step-by-step explanation: it is like PLUS and minus equal to minus in decimal FORM, so : 60+(-20)=+4.0 in decimal form PLS MARK me as an brainley

9073.

Object distance and image distance of a lens are -60 cm and -20 cm respectively,then the magnification of lens will beA. -0.33B. +3.0C.+0.33D. +4.0

Answer»

ANSWER:

answer is d

Step-by-step explanation:

it is like PLUS and minus equal to minus in decimal FORM,

so : 60+(-20)=+4.0 in decimal form

PLS MARK me as an brainley

Discussion

9074.	Refer to attachment solve qus don't spam (♥ω♥*)
Answer» Answer: refer to attachment (♥ω♥) Step-by-step explanation:* Let speed of the 1ST TRIP x miles / HR. and speed of the 2nd trip 3x / hr. We KNOW that Speed = Distance/Time. Or, Time = Distance/Speed. So, TIMES taken to covered a distance of 50 miles on his first trip = 50/x hr. And times taken to covered a distance of 300 miles on his later trip = 300/3x hr. = 100/x hr. So we can clearly see that his new time compared with the old time was: twice as much.

9074.

Refer to attachment solve qus don't spam (♥ω♥*)

Answer»

Answer:

refer to attachment (♥ω♥*)

Step-by-step explanation:

Let speed of the 1ST TRIP x miles / HR. and speed of the 2nd trip 3x / hr.

We KNOW that

Speed = Distance/Time.

Or, Time = Distance/Speed.

So, TIMES taken to covered a distance of 50 miles on his first trip = 50/x hr.

And times taken to covered a distance of 300 miles on his later trip = 300/3x hr.

= 100/x hr.

So we can clearly see that his new time compared with the old time was: twice as much.

Discussion

9075.	I think you have got some misunderstandingyou know I am mannerless girl btw be happy and have fun question what is photosynthesis
Answer» Answer: Unfo LOW me from my main ACCOUNT if you WANT to ignore me and if you don't LIKE me

9075.

I think you have got some misunderstandingyou know I am mannerless girl btw be happy and have fun question what is photosynthesis

Answer»

Answer:

Unfo LOW me from my main ACCOUNT if you WANT to ignore me and if you don't LIKE me

Discussion

9076.	If α and β are the zeroes of the polynomial f(x)=ax^2 + bx + c, then find 1/α^2 + 1/β^2
Answer» F(X) = ax² + BX + C α, β are the Zeros α + β = – b/a αβ = c/a 1/ α + 1/β = $\huge \sf \frac{ \frac{b}{a} }{ \frac{c}{a} }$ $\:$ 1/α² + 1/β² = (1/α + 1/β)² – 2/αβ = ( – b/c)² – 2a/c $\implies\large\sf\frac{ {b}^{2} - 2ac }{ {c}^{2} }$

9076.

If α and β are the zeroes of the polynomial f(x)=ax^2 + bx + c, then find 1/α^2 + 1/β^2

Answer»

F(X) = ax² + BX + C

α, β are the Zeros

α + β = – b/a

αβ = c/a

1/ α + 1/β = $\huge \sf \frac{ \frac{b}{a} }{ \frac{c}{a} }$

$\:$

1/α² + 1/β²

= (1/α + 1/β)² – 2/αβ

= ( – b/c)² – 2a/c

$\implies\large\sf\frac{ {b}^{2} - 2ac }{ {c}^{2} }$

Discussion

9077.	What is sexual period ?
Answer» ANSWER: SORRY I don't KNOW answer this QUESTION sorry

9077.

What is sexual period ?

Answer»

ANSWER:

SORRY I don't KNOW answer this QUESTION sorry

Discussion

9078.	11-If a+b+c =0 and a²+b² +c² = 16, find the value of ab + bc + ca
Answer» Answer: -8 Step-by-step EXPLANATION: a+b+c= a^2 + b^2 + c^2 + 2(ab + BC + ca ) 0 = 16 + 2(ab + bc + ca ) -16 = 2(ab + bc + ca ) ab + bc + ca = -16/2 ab + bc + ca = -8 Please MARK me the BRAINLIEST

9078.

11-If a+b+c =0 and a²+b² +c² = 16, find the value of ab + bc + ca

Answer»

Answer:

-8

Step-by-step EXPLANATION:

a+b+c= a^2 + b^2 + c^2 + 2(ab + BC + ca )

0 = 16 + 2(ab + bc + ca )

-16 = 2(ab + bc + ca )

ab + bc + ca = -16/2

ab + bc + ca = -8

Please MARK me the BRAINLIEST

Discussion

9079.	Solve for x: 4x² - 4ax + (a²-b²)=0 by using quadratic formula. (3 mark)
Answer» Step-by-step EXPLANATION: HOPE it will HELP you....

9079.

Solve for x: 4x² - 4ax + (a²-b²)=0 by using quadratic formula. (3 mark)

Answer»

Step-by-step EXPLANATION:

HOPE it will HELP you....

Discussion

9080.	Answer the question ✅
Answer» Answer: 6 ONE is CORRECT HOPE you are not

9080.

Answer the question ✅

Answer»

Answer:

6 ONE is CORRECT HOPE you are not

Discussion

9081.	I need this with full solution sirf answer na likh k dena please
Answer» ANSWER: hope you have a NICE day Step-by-step EXPLANATION: Mark Me BRAINLIEST

9081.

I need this with full solution sirf answer na likh k dena please

Answer»

ANSWER:

hope you have a NICE day

Step-by-step EXPLANATION:

Mark Me BRAINLIEST

Discussion

9082.	Any two numbers x and y, written in the form of (x,y) is called ___.Please answer urgently!!
Answer» ANSWER: SOLUTION SET Step-by-step EXPLANATION:

9082.

Any two numbers x and y, written in the form of (x,y) is called ___.Please answer urgently!!

Answer»

ANSWER:

SOLUTION SET

Step-by-step EXPLANATION:

Discussion

9083.	. If (x-2)(x+2)(x²+4)=x⁴+A, then find the value of A
Answer» ANSWER: A= -16 Step-by-step EXPLANATION: (x-2)(x+2)(x^2+4) =(x^2+4)(x^2-4) =x^4-16 THEREFORE, A=-16

9083.

. If (x-2)(x+2)(x²+4)=x⁴+A, then find the value of A

Answer»

ANSWER: A= -16

Step-by-step EXPLANATION:

(x-2)(x+2)(x^2+4)

=(x^2+4)(x^2-4)

=x^4-16

THEREFORE, A=-16

Discussion

9084.	The sum of first 10 terms of an Arithmetic Progression is 55 and the sum of first 9 termsof the same arithmetic progression is 45. Then its 10th term is,B) 55C) 12D) 10A) 9
Answer» Step-by-step EXPLANATION: Let the A.P. be a,a+d,a+2d,a+3d,...a+(n−2)d,a+(n−1)d. Sum of FIRST four terms =a+(a+d)+(a+2d)+(a+3d)=4a+6d Sum of last four terms =[a+(n−4)d]+[a+(n−3)d]+[a+(n−2)d]+[a+(n−1)d]⇒=4a+(4n−10)d According to the GIVEN condition, 4a+6d=56 ⇒4(11)+6d=56[Sincea=11(given)] ⇒6d=12⇒d=2 ∴4a+(4n−10)d=112 ⇒4(11)+(4n−10)2=112 ⇒(4n−10)2=68 ⇒4n−10=34 ⇒4n=44⇒n=11 Thus the NUMBER of terms of A.P. is 11.

9084.

The sum of first 10 terms of an Arithmetic Progression is 55 and the sum of first 9 termsof the same arithmetic progression is 45. Then its 10th term is,B) 55C) 12D) 10A) 9

Answer»

Step-by-step EXPLANATION:

Let the A.P. be a,a+d,a+2d,a+3d,...a+(n−2)d,a+(n−1)d.

Sum of FIRST four terms =a+(a+d)+(a+2d)+(a+3d)=4a+6d

Sum of last four terms

=[a+(n−4)d]+[a+(n−3)d]+[a+(n−2)d]+[a+(n−1)d]⇒=4a+(4n−10)d

According to the GIVEN condition, 4a+6d=56

⇒4(11)+6d=56[Sincea=11(given)]

⇒6d=12⇒d=2

∴4a+(4n−10)d=112

⇒4(11)+(4n−10)2=112

⇒(4n−10)2=68

⇒4n−10=34

⇒4n=44⇒n=11

Thus the NUMBER of terms of A.P. is 11.

Discussion

9085.	Find the area of the shaded regions of following geometrical figure
Answer» ANSWER: Find the area of the shaded REGIONS of following GEOMETRICAL FIGURE

9085.

Find the area of the shaded regions of following geometrical figure

Answer»

ANSWER:

Find the area of the shaded REGIONS of following GEOMETRICAL FIGURE

Discussion

9086.	The perimeter of a right triangle is 60 cm. Its hypotenuse is 25 cm. Find the area of the triangle.
Answer» Step-by-step explanation: Given : Perimeter of a right angled triangle is 60cm. Its HYPOTENUSE is 25cm. To find : Area of the triangle. Solution : Let ABC be the right angled triangle, where BC = x cm. Perimeter of triangle = Sum of all the sides of a triangle AB + BC + CA = 60 cm AB + x + CA = 60 cm AB + x = 60 - 25 AB + x = 35 AB = 35 - x Using Pythagoras theorem, AB² + BC² = AC² ⇒ (35 - x)² + (x)² = 25² ⇒ 2x² - 70x + 625 = 0 ⇒ 2x² - 40x - 30x + 625 = 0 ⇒ 2X(x - 20) -30(x - 20) = 0 ⇒ (x - 20)(2x - 30)=0 ∴ x = 20 or 15 If x = 20 cm, AB = 35 - 20 AB = 15 cm Area of triangle, ⇒ 1/2 × base × height 1/2 × BC × AB 1/2 × 20 × 15 150 cm² If x = 15 cm, AB = 35 - 15 AB = 20 cm Area of triangle, ⇒ 1/2 × base × height 1/2 × BC × AB 1/2 × 15 × 20 150 cm² ∴ Area of the triangle is 150 cm². ...ッ

9086.

The perimeter of a right triangle is 60 cm. Its hypotenuse is 25 cm. Find the area of the triangle.

Answer»

Step-by-step explanation:

Given :

Perimeter of a right angled triangle is 60cm.

Its HYPOTENUSE is 25cm.

To find :

Area of the triangle.

Solution :

Let ABC be the right angled triangle, where BC = x cm.

Perimeter of triangle = Sum of all the sides of a triangle

AB + BC + CA = 60 cm
AB + x + CA = 60 cm
AB + x = 60 - 25
AB + x = 35
AB = 35 - x

Using Pythagoras theorem,

AB² + BC² = AC²

⇒ (35 - x)² + (x)² = 25²

⇒ 2x² - 70x + 625 = 0

⇒ 2x² - 40x - 30x + 625 = 0

⇒ 2X(x - 20) -30(x - 20) = 0

⇒ (x - 20)(2x - 30)=0

∴ x = 20 or 15

If x = 20 cm,

AB = 35 - 20
AB = 15 cm

Area of triangle,

⇒ 1/2 × base × height

1/2 × BC × AB
1/2 × 20 × 15
150 cm²

If x = 15 cm,

AB = 35 - 15
AB = 20 cm

Area of triangle,

⇒ 1/2 × base × height

1/2 × BC × AB
1/2 × 15 × 20
150 cm²

∴ Area of the triangle is 150 cm².

...ッ

Discussion

9087.	Find the value: (m⁴+2m²-m³+3+m)÷(m²+m+1)
Answer» Answer: = m³(m⁴ – 2m² + 3m + 2) – 2M(m⁴ – 2m² + 3m + 2) + 3(m⁴ – 2m² + 3m + 2) = m⁷ – 2m⁵ + 3m⁴ + 2m³ – 2m⁵ + 4m³ – 6m² – 4m + 3m⁴ – 6m² + 9M + 6 = m⁷ – 2m⁵ – 2m⁵ + 3m⁴ + 3m⁴ + 2m³ + 4m³ – 6m² – 6m² – 4m + 9m + 6 = m⁷ – 4m⁵ + 6m⁴ + 6m³ – 12m² + 5M + 6. Hope it helps you

9087.

Find the value: (m⁴+2m²-m³+3+m)÷(m²+m+1)

Answer»

Answer:

= m³(m⁴ – 2m² + 3m + 2) – 2M(m⁴ – 2m² + 3m + 2) + 3(m⁴ – 2m² + 3m + 2)

= m⁷ – 2m⁵ + 3m⁴ + 2m³ – 2m⁵ + 4m³ – 6m² – 4m + 3m⁴ – 6m² + 9M + 6

= m⁷ – 2m⁵ – 2m⁵ + 3m⁴ + 3m⁴ + 2m³ + 4m³ – 6m² – 6m² – 4m + 9m + 6

= m⁷ – 4m⁵ + 6m⁴ + 6m³ – 12m² + 5M + 6.

Hope it helps you

Discussion

9088.	23.x = 9, y = 4 is a solution of the linear equation:a) 2x + y = 17Ob) x + y = 17O c) x + 2y = 17O d) 3x - 2y = 17
Answer» Step-by-step EXPLANATION: PLEASE FOLLOW MARK BRAINLIST

9088.

23.x = 9, y = 4 is a solution of the linear equation:a) 2x + y = 17Ob) x + y = 17O c) x + 2y = 17O d) 3x - 2y = 17

Answer»

Step-by-step EXPLANATION:

PLEASE FOLLOW MARK BRAINLIST

Discussion

9089.	Q.7) Estimate the quotient of 7982:1728 ?
Answer» ANSWER: ghhhhjdnusn DJ ND have hsubsijdinruinmusbskdurd

9089.

Q.7) Estimate the quotient of 7982:1728 ?

Answer»

ANSWER:

ghhhhjdnusn DJ ND have hsubsijdinruinmusbskdurd

Discussion

9090.	The radius of a sphere is a random number between 2 and 4. What is the expected value of its volume? What is the probability that its volume is at most 36π? with full explaination..
Answer» Given : The radius of a sphere is a random number between 2 and 4. To Find : What is the EXPECTED value of its VOLUME probability that its volume is at most 36π SOLUTION: Volume of Sphere = (4/3)πR³ The radius of a sphere is a random number between 2 and 4 f(R) = 1/(4- 2) for 2 < R < 4 0 R other value $E(R) = \int\limits^4_2 {\frac{4}{3} \pi R^3 } \, \frac{dR}{2}$ => E (R) = (2π/3) (R⁴/4) $\left \right ]_2^4$ => E (R) = (π/6) [4⁴ - 2⁴] => E (R) = (π/6) [240] => E (R) = 40π expected value of its volume = 40π cubic units 36π = (4/3)πR³ => R = 3 Hence probability that its volume is at most 36π = (3 - 2)/ ( 4- 2) = 1/2 = 0.5 Learn More: A game at the fair INVOLVES a wheel with seven sectors. Two of the ... brainly.in/question/16294455 suppose you remove the jacks, queens and kings from the deck. this ... brainly.in/question/17965282

9090.

The radius of a sphere is a random number between 2 and 4. What is the expected value of its volume? What is the probability that its volume is at most 36π? with full explaination..

Answer»

Given : The radius of a sphere is a random number between 2 and 4.

To Find : What is the EXPECTED value of its VOLUME

probability that its volume is at most 36π

SOLUTION:

Volume of Sphere = (4/3)πR³

The radius of a sphere is a random number between 2 and 4

f(R) = 1/(4- 2) for 2 < R < 4

0 R other value

$E(R) = \int\limits^4_2 {\frac{4}{3} \pi R^3 } \, \frac{dR}{2}$

=> E (R) = (2π/3) (R⁴/4) $\left \right ]_2^4$

=> E (R) = (π/6) [4⁴ - 2⁴]

=> E (R) = (π/6) [240]

=> E (R) = 40π

expected value of its volume = 40π cubic units

36π = (4/3)πR³

=> R = 3

Hence probability that its volume is at most 36π = (3 - 2)/ ( 4- 2)

= 1/2

= 0.5

Learn More:

A game at the fair INVOLVES a wheel with seven sectors. Two of the ...

brainly.in/question/16294455

suppose you remove the jacks, queens and kings from the deck. this ...

brainly.in/question/17965282

Discussion

9091.	Prime factorisation and fundamental theorem of arithmetic let us consider two numbers 18 and 30factors of 18 are 1,2,3,6,9 and 18 out of these factors; 2 and 3 are prime numbers similarly, factors of 30 are 1,2,3,5,6,10,15 and 30 out of these factors 2,3 and 5 are prime numbers
Answer» Answer: prime factorisation and fundamental theorem of arithmetic let us consider TWO NUMBERS 18 and 30 FACTORS of 18 are 1,2,3,6,9 and 18 out of these factors; 2 and 3 are prime numbers SIMILARLY, factors of 30 are 1,2,3,5,6,10,15 and 30 out of these factors 2,3 and 5 are prime numbers

9091.

Prime factorisation and fundamental theorem of arithmetic let us consider two numbers 18 and 30factors of 18 are 1,2,3,6,9 and 18 out of these factors; 2 and 3 are prime numbers similarly, factors of 30 are 1,2,3,5,6,10,15 and 30 out of these factors 2,3 and 5 are prime numbers

Answer»

Answer:

prime factorisation and fundamental theorem of arithmetic let us consider TWO NUMBERS 18 and 30

FACTORS of 18 are 1,2,3,6,9 and 18 out of these factors; 2 and 3 are prime numbers SIMILARLY, factors of 30 are 1,2,3,5,6,10,15 and 30 out of these factors 2,3 and 5 are prime numbers

Discussion

9092.	If A, B and C are interior angles of a triangle ABC, then show that sin [(B + C)/2] = cos A/2.No Spam❌No irrelevant answers❌kar v kya skta hu mai (-_-\|\|)Hhh... bol le
Answer» ANSWER: Oyee BRO kaichai HO ? Kkrh ? Btw LEFT Kyu ? Kya hua ? Nikhil KIDHAR mar gya ?

9092.

If A, B and C are interior angles of a triangle ABC, then show that sin [(B + C)/2] = cos A/2.No Spam❌No irrelevant answers❌kar v kya skta hu mai (-_-||)Hhh... bol le

Answer»

ANSWER:

Oyee BRO kaichai HO ?

Kkrh ?

Btw LEFT Kyu ?

Kya hua ?

Nikhil KIDHAR mar gya ?

Discussion

9093.	Solution set of the inequality 20x≤90 when x∈N, where N is a set of natural numbers, is: * {…,1,2,3,4} {…,1,2,3,4,4.5} {1,2,3,4,4.5} {1,2,3,4}
Answer» ANSWER: which of the FOLLOWING is LIKE TERM 7XY

9093.

Solution set of the inequality 20x≤90 when x∈N, where N is a set of natural numbers, is: * {…,1,2,3,4} {…,1,2,3,4,4.5} {1,2,3,4,4.5} {1,2,3,4}

Answer»

ANSWER:

which of the FOLLOWING is LIKE TERM 7XY

Discussion

9094.	X≥0,y≤0 represents ?
Answer» ANSWER: x is GREATER than or EQUAL to 0, y is lesser than or equal to 0. x is positive or zero, y is NEGATIVE or zero Please MARK as brainliest

9094.

X≥0,y≤0 represents ?

Answer»

ANSWER:

x is GREATER than or EQUAL to 0, y is lesser than or equal to 0.

x is positive or zero, y is NEGATIVE or zero

Please MARK as brainliest

Discussion

9095.	Express each of the following in the term P/q.a). (4)-⁴
Answer» ANSWER: 1/ 64 is the CORRECT answer

9095.

Express each of the following in the term P/q.a). (4)-⁴

Answer»

ANSWER:

1/ 64 is the CORRECT answer

Discussion

9096.	In case of compund interest compunded half yearly the rate per cent per annum is?
Answer» If interest is COMPOUNDED half yearly, rate of interest = R / 2 and A = P [ 1 + ( {R / 2} / 100 ) ]T, where 'T' is the time PERIOD. For example, if we have to CALCULATE the interest for 1 year, then T = 2. For 2 years, T = 4.07-

Discussion

9097.	A Company sell a Product А A of Rs 65 per unit Variable Cost for material and Rs 27 for labours. Annual fix Cost is Rs 10,000 Construct Profit function. per Unit is Rs 20 find cost?
Answer» I don't KNOW anything about it

9097.

A Company sell a Product А A of Rs 65 per unit Variable Cost for material and Rs 27 for labours. Annual fix Cost is Rs 10,000 Construct Profit function. per Unit is Rs 20 find cost?

Answer»

I
don't
KNOW
anything
about
it

Discussion

9098.	What is Zero in polynomial?
Answer» FOLLOW *MARK* me *BRAINELIST*

9098.

What is Zero in polynomial?

Answer»

FOLLOW

MARK me BRAINELIST

Discussion

9099.	Pending for a good time to ask you about the job
Answer» ANSWER: PENDULUM DOUSING I am GOING to EAT and then you can only

9099.

Pending for a good time to ask you about the job

Answer»

ANSWER:

PENDULUM DOUSING I am GOING to EAT and then you can only

Discussion

9100.	Under root 6 X under root 27 is equal to
Answer» ANSWER: co.me for c.hat ( qjzgdbwxmr ) Step-by-step EXPLANATION: √6 × √27=9√2

9100.

Under root 6 X under root 27 is equal to

Answer»

ANSWER:

co.me for c.hat ( qjzgdbwxmr )

Step-by-step EXPLANATION:

√6 × √27=9√2

Discussion

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. If (x-2)(x+2)(x²+4)=x⁴+A, then find the value of A

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