332354 + Interview Questions in Secondary School in Math Page 377 InterviewSolution

18801.	Express7116 ,213, and aand 1014 in deciral sound
Answer» ANSWER: Step-by-step EXPLANATION: Lollllll

18801.

Express7116 ,213, and aand 1014 in deciral sound

Answer»

ANSWER:

Step-by-step EXPLANATION:

Lollllll

Discussion

18802.	If A=[2x -3 10 4x -8 5],find \|A\|
Answer» A=[2x -3 10 4x -8 5],FIND \|A\| = ± 256 X -58

18802.

If A=[2x -3 10 4x -8 5],find |A|

Answer»

A=[2x -3 10 4x -8 5],FIND |A|

= ± 256 X -58

Discussion

18803.	-118 is multiplicative inverse
Answer» ANSWER: SEE the ATTACHMENT HOPE it HELPS

18803.

-118 is multiplicative inverse

Answer»

ANSWER:

SEE the ATTACHMENT

HOPE it HELPS

Discussion

18804.	What will be the sign Product if we multiplytogether 249 negative and 50 positive integer?
Answer» Answer: mark as brainlist answer Step-by-step explanation: Sign of the product if we multiply: (a) 8 negative integers and 3 POSITIVE integers? (b) 5 negative integers and 4 positive integers? (c) (–1), twelve TIMES? (d) (–1), 2M times, m is a natural NUMBER? a) Multiplying 8 negative integers and 3 positive integers we get, positive sign. b) Multiplying 5 negative integers and 4 positive integers we get, negative sign. c) Multiplying (-1) into twelve times we get, positive sign. d) Multiplying (-1) and 2m we get, positive sign.

18804.

What will be the sign Product if we multiplytogether 249 negative and 50 positive integer?

Answer»

Answer:

mark as brainlist answer

Step-by-step explanation:

Sign of the product if we multiply:

(a) 8 negative integers and 3 POSITIVE integers?

(b) 5 negative integers and 4 positive integers?

(c) (–1), twelve TIMES?

(d) (–1), 2M times, m is a natural NUMBER?

a) Multiplying 8 negative integers and 3 positive integers we get, positive sign.

b) Multiplying 5 negative integers and 4 positive integers we get, negative sign.

c) Multiplying (-1) into twelve times we get, positive sign.

d) Multiplying (-1) and 2m we get, positive sign.

Discussion

18805.	Plot the following points in the graph (2,0)
Answer» ANSWER: this is UR answer........

18805.

Plot the following points in the graph (2,0)

Answer»

ANSWER:

this is UR answer........

Discussion

18806.	Ifx+y=12 and xy=27then,find the value of xcube +ycube
Answer» ANSWER: 756 Step-by-step EXPLANATION: x+y=12 9+3=12 x=9 y=3 xy=27 9.3=27 xcube + ycube= 9cube+3cube 729+27 756 Mark this as BRAIN LIST answer

18806.

Ifx+y=12 and xy=27then,find the value of xcube +ycube

Answer»

ANSWER:

756

Step-by-step EXPLANATION:

x+y=12

9+3=12

x=9

y=3

xy=27

9.3=27

xcube + ycube=

9cube+3cube

729+27

756

Mark this as BRAIN LIST answer

Discussion

18807.	Aadhar gives his shoes for repair at 11:20 a.m. The shoemakertakes 45 minutes to repair. When will they be ready?
Answer» Answer: 12:05 pm Step-by-step EXPLANATION: They will be READY at 12:05 pm Plz MARK it BRAINLIEST!!!

18807.

Aadhar gives his shoes for repair at 11:20 a.m. The shoemakertakes 45 minutes to repair. When will they be ready?

Answer»

Answer:

12:05 pm

Step-by-step EXPLANATION:

They will be READY at 12:05 pm

Plz MARK it BRAINLIEST!!!

Discussion

18808.	X=3+under root 1 find the value of x2+1/x
Answer» Answer: Step-by-step EXPLANATION: x=3+√1 , x²+1/x.........(given) putting the value of x in the given equation = (3+√1)²+1/3+√1 = 9+6+1+1/3+√1 = 16+1/3+√1 = 16+3 - 1/9-1 .........(by RATIONALISING the DENOMINATOR) = 16+2/8 = 108/8+2/8 = 110/8 = 13.75

18808.

X=3+under root 1 find the value of x2+1/x

Answer»

Answer:

Step-by-step EXPLANATION: x=3+√1 , x²+1/x.........(given)

putting the value of x in the given equation

= (3+√1)²+1/3+√1

= 9+6+1+1/3+√1

= 16+1/3+√1

= 16+3 - 1/9-1 .........(by RATIONALISING the DENOMINATOR)

= 16+2/8

= 108/8+2/8

= 110/8

= 13.75

Discussion

18809.	-4(m+3)=12 find the equation spammers stay away useless answer would be reported
Answer» Step-by-step explanation: *SOLUTION:- -4(m+3)=12 multiply* by -4 on LHS side we GET -4M -12=12 take -12 into rhs ,we get -4m=12+12 -4m=24 m=24/-4 m= -24/4 m= -6 *Answer*:-m= -6

18809.

-4(m+3)=12 find the equation spammers stay away useless answer would be reported

Answer»

Step-by-step explanation:

SOLUTION:-

-4(m+3)=12

multiply by -4 on LHS side we GET

-4M -12=12

take -12 into rhs ,we get

-4m=12+12

-4m=24

m=24/-4

m= -24/4

m= -6

Answer:-m= -6

Discussion

18810.	On adding" x" to its additive inverse we get
Answer» Step-by-step EXPLANATION: HOPE it HELPS you stay SAFE

18810.

On adding" x" to its additive inverse we get

Answer»

Step-by-step EXPLANATION:

HOPE it HELPS you

stay SAFE

Discussion

18811.	Which of the following points lies on the straight line y = 3x + 5?
Answer» the STRAIGHT LINE y = 3x + 5 X. 1 2. 3. Y. 8. 11. 14

18811.

Which of the following points lies on the straight line y = 3x + 5?

Answer»

the STRAIGHT LINE y = 3x + 5

X. 1 2. 3.

Y. 8. 11. 14

Discussion

18812.	The length and breadth of a rectangular park are in the ratio of 9:11. If it's area is 891meter square, find its perimeter
Answer» ANSWER: let the SIDES be x length = 9x and breadth = 11X area of the reactangle = lxb 891 m sq = 9x X 11x 891m sq = 99x^2 891/99= 9 = 3 hence the value of x = 3 length = 9x3 = 27 breath = 11x3 =33 perimeter of the rectangle = 2[l+b] 2[ 27+33} = 2[ 60] = 120 m so the perimeter of the rectangle is 120 m

18812.

The length and breadth of a rectangular park are in the ratio of 9:11. If it's area is 891meter square, find its perimeter

Answer»

ANSWER: let the SIDES be x

length = 9x and breadth = 11X

area of the reactangle = lxb

891 m sq = 9x X 11x

891m sq = 99x^2

891/99= 9 = 3

hence the value of x = 3

length = 9x3 = 27

breath = 11x3 =33

perimeter of the rectangle = 2[l+b]

2[ 27+33} = 2[ 60] = 120 m

so the perimeter of the rectangle is 120 m

Discussion

18813.	X= 9 , y= 4 is a solution of the linear equation :2 points2x + y = 17x+ y = 17x + 2y = 173x - 2y = 17
Answer» ANSWER: x+2y=17 is the CORRECT answer

18813.

X= 9 , y= 4 is a solution of the linear equation :2 points2x + y = 17x+ y = 17x + 2y = 173x - 2y = 17

Answer»

ANSWER:

x+2y=17

is the CORRECT answer

Discussion

18814.	If a not equal to 0,and a-1/a=3,find a2+1/a2
Answer» Answer: a2+1/a2=6 Step-by-step EXPLANATION: and) a=3 a2+1/a2=? now USE this FORMULA (a-b) 2 =a2+ B2- 2ab so.,(a-1/a) 2=a2+1 /and 2×a1/a a2+1/a-2 (a-1/a) 2=a2+1/a2-a (3)2=a2+1/a2-2 9-2 =a2+1/a2 answer= a2+ 1/a2=6

18814.

If a not equal to 0,and a-1/a=3,find a2+1/a2

Answer»

Answer:

a2+1/a2=6

Step-by-step EXPLANATION:

and) a=3

a2+1/a2=?

now USE this FORMULA

(a-b) 2 =a2+ B2- 2ab

so.,(a-1/a) 2=a2+1 /and 2×a1/a

a2+1/a-2

(a-1/a) 2=a2+1/a2-a

(3)2=a2+1/a2-2

9-2 =a2+1/a2

answer= a2+ 1/a2=6

Discussion

18815.	Find the value of complementary angle of 78 degree
Answer» ANSWER: WAIT wait I am FINDING the RIGHT answer

18815.

Find the value of complementary angle of 78 degree

Answer»

ANSWER:

WAIT wait I am FINDING the RIGHT answer

Discussion

18816.	Find dot product if a=3i+5i-7k and b=7i+3k and interpret the result
Answer» a=3i+5i-7k and b=7i+3k Ř = 18I - 4 K

18816.

Find dot product if a=3i+5i-7k and b=7i+3k and interpret the result

Answer»

a=3i+5i-7k and b=7i+3k

Ř = 18I - 4 K

Discussion

18817.	If the product of zeroes of the polynomialfind the value of a.
Answer» Answer: The value of a for the polynomial \BOLD{a x^{2}-6 x-6}ax 2 −6x−6 is -3/2 Step-by-step explanation: Given polynomial: a x^{2}-6 x-6ax 2 −6x−6 Product of zeroes of this polynomial = 4. A polynomial is an expression of more than one or TWO algebraic term, may be a sum of those terms also. We know, that the product of zeroes of a polynomial a x^{2}+b x+cax 2 +bx+C can be given by =c/a Hence, for the polynomial: a x^{2}-6 x-6ax 2 −6x−6 , a = a, b = -6 and c = -6. Product of zeroes of this polynomial = (-6)/a 4 = -6/a a = -6/4= -3/2

18817.

If the product of zeroes of the polynomialfind the value of a.

Answer»

Answer:

The value of a for the polynomial \BOLD{a x^{2}-6 x-6}ax

2

−6x−6 is -3/2

Step-by-step explanation:

Given polynomial: a x^{2}-6 x-6ax

2

−6x−6

Product of zeroes of this polynomial = 4.

A polynomial is an expression of more than one or TWO algebraic term, may be a sum of those terms also.

We know, that the product of zeroes of a polynomial a x^{2}+b x+cax

2

+bx+C can be given by =c/a

Hence, for the polynomial: a x^{2}-6 x-6ax

2

−6x−6 , a = a, b = -6 and c = -6.

Product of zeroes of this polynomial = (-6)/a

4 = -6/a

a = -6/4= -3/2

Discussion

18818.	Please show working nicely class8
Answer» Answer: It should be divided by 3 to be a PERFECT cube Step-by-step explanation: HOPE it is helpful please MARK me as BRAINLIEST

18818.

Please show working nicely class8

Answer»

Answer:

It should be divided by 3 to be a PERFECT cube

Step-by-step explanation:

HOPE it is helpful

please MARK me as BRAINLIEST

Discussion

18819.	Please tell me how to factorise this-12x²-7x+1
Answer» ANSWER: $12 {x}^{2} - 7x + 1 = 12 {x}^{2} - 4x - 3x + 1$ $4x(3x - 1) - 1(3x - 1) = (3x - 1)(4x - 1)$

18819.

Please tell me how to factorise this-12x²-7x+1

Answer»

ANSWER:

$12 {x}^{2} - 7x + 1 = 12 {x}^{2} - 4x - 3x + 1$

$4x(3x - 1) - 1(3x - 1) = (3x - 1)(4x - 1)$

Discussion

18820.	16. If A = {a, b}, B={x, y), C={a, c, y) then verify thati) A x (BUC) = (A x B) (A x C)
Answer» Answer: GIVEN, A={a, B} B={x, y} C={a, c, y} Step-by-step explanation: To verify, L.H.S. (B union C) ={x, y} union {a, c, y} ={x, y, a, c} A x (B union C) ={a, b} x {x, y, c, a} ={(a, x) (a, y) (a, c) (a, a) (b, x) (b, y) (b, c) (b, a)} R.H.S A x B={a, b} x {x, y} ={(a, x) (a, y) (b, x) (b, y)} A x C={a, b} x {a, c, y} ={(a, a) (a, x) (a, c) (a, y) (b, a) (b, c) (b, y)} (A x B) (A x C) ={(a, x) (a, y) (b, x) (b, y) (a, a) (b, a) (a, c) (b, c)} THEREFORE A x (BUC) =(A x B) (A X C) HENCE proved

18820.

16. If A = {a, b}, B={x, y), C={a, c, y) then verify thati) A x (BUC) = (A x B) (A x C)

Answer»

Answer:

GIVEN,

A={a, B}

B={x, y}

C={a, c, y}

Step-by-step explanation:

To verify,

L.H.S.

(B union C) ={x, y} union {a, c, y}

={x, y, a, c}

A x (B union C) ={a, b} x {x, y, c, a}

={(a, x) (a, y) (a, c) (a, a) (b, x) (b, y) (b, c) (b, a)}

R.H.S

A x B={a, b} x {x, y}

={(a, x) (a, y) (b, x) (b, y)}

A x C={a, b} x {a, c, y}

={(a, a) (a, x) (a, c) (a, y) (b, a) (b, c) (b, y)}

(A x B) (A x C) ={(a, x) (a, y) (b, x) (b, y) (a, a) (b, a) (a, c) (b, c)}

THEREFORE A x (BUC) =(A x B) (A X C)

HENCE proved

Discussion

18821.	Clear selection2 points550. If the line segment joining the points (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b)(8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 11abOOdClear selection
Answer» <P>If the line segment JOINING the POINTS (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b) (8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 1 1 a b O Od Answer :+ If the line segment joining the points (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b) (8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 1 1 a b O Od

18821.

Clear selection2 points550. If the line segment joining the points (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b)(8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 11abOOdClear selection

Answer»

<P>If the line segment JOINING the POINTS (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b)

(8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 1

1

a

b

O

Od

Answer :+ If the line segment joining the points (3,-4) and (1, 2) is trisected at points P (a, 2) and Q 15, b)

(8) a,b - (b) a = žub=0 (0) 2 -5,0 = 1 (d) a -5,6 = 1

1

a

b

O

Od

Discussion

18822.	This scattering of abeam of light by the particles of a colloid is called tyndall effect
Answer» $Answer$ The TYNDALL effect is the phenomenon in which the PARTICLES in a colloid scatter the beams of light that are DIRECTED at them. ... When a beam of light passes through a colloid, the COLLOIDAL particles present in the solution do not allow the beam to completely pass through.

18822.

This scattering of abeam of light by the particles of a colloid is called tyndall effect

Answer»

$Answer$

The TYNDALL effect is the phenomenon in which the PARTICLES in a colloid scatter the beams of light that are DIRECTED at them. ... When a beam of light passes through a colloid, the COLLOIDAL particles present in the solution do not allow the beam to completely pass through.

Discussion

18823.	Observe the figure60YN1 point3. In the above figure ,thevalues of x,y and z are60 degree, 120 degree,60degree120 degree , 60 degree , 120degreeOO60degree , 60 degree ,120degree
Answer» Answer: 0 digreee PAA MERE laand rakhha

18823.

Observe the figure60YN1 point3. In the above figure ,thevalues of x,y and z are60 degree, 120 degree,60degree120 degree , 60 degree , 120degreeOO60degree , 60 degree ,120degree

Answer»

Answer:

0 digreee PAA MERE laand rakhha

Discussion

18824.	- 23X-3 is multiplicative inverse
Answer» ANSWER: 69.. HOPE it will HELP you MARK as BRAINLIST answer

18824.

- 23X-3 is multiplicative inverse

Answer»

ANSWER:

69..

HOPE it will HELP you MARK as BRAINLIST answer

Discussion

18825.	1a²+127, then the value of a--is-
Answer» ANSWER: $a^{2}$ + 1 =27 $a^{2}$ =27-1=26 a = $\sqrt{26}$ PLEASE MARK ME BRAINLIEST

18825.

1a²+127, then the value of a--is-

Answer»

ANSWER:

$a^{2}$ + 1 =27

$a^{2}$ =27-1=26

a = $\sqrt{26}$

PLEASE MARK ME BRAINLIEST

Discussion

18826.	In which quadrant the ordinate is 4 and absissa is 5
Answer» Answer: In first QUADRANT bcoz only in first quadrant both COORDINATES are +ve. hope it helps U... PLZ mark as brainliest...

18826.

In which quadrant the ordinate is 4 and absissa is 5

Answer»

Answer:

In first QUADRANT bcoz only in first quadrant both COORDINATES are +ve.

hope it helps U...

PLZ mark as brainliest...

Discussion

18827.	1 A number which is natural , Whole number, integerand rational number
Answer» Answer: 1 to INFINITY.................................

18827.

1 A number which is natural , Whole number, integerand rational number

Answer»

Answer:

1 to INFINITY.................................

Discussion

18828.	Plzz answer dears... iam not good at maths plzz help me guys
Answer» Answer: a trapizium HA2 EQUALL triangles so it is = to 4 +9 = 13 sq cm for 1 triangle for other the same as the triangles in a trapixium are equal 13+13 = 26 sq cm is the area of the trapizium you said U r not good at math why dont you try vedantu it is free pls mark me brainliest Step-by-step explanation:

18828.

Plzz answer dears... iam not good at maths plzz help me guys

Answer»

Answer:

a trapizium HA2 EQUALL triangles so

it is = to 4 +9 = 13 sq cm for 1 triangle for other the same as the triangles in a trapixium are equal

13+13 = 26 sq cm is the area of the trapizium

you said U r not good at math why dont you try vedantu it is free

pls mark me brainliest

Step-by-step explanation:

Discussion

18829.	Maximize Z = -x + 2y, subject to the constraints arex>_3,x+ y >_5, x + 2 y >_6 and x, y>_0.
Answer» Maximize Z = -X + 2y, subject to the CONSTRAINTS are x>_3,x+ y >_5, x + 2 y >_6 and x, y>_0. ➡ 0 , 1 , 3 & 65 subject to the constraints.✔✏Maximize Z = -x + 2y,........ [ Change compound to complex sentences ] 1.) I will reach the office and I shall talk to him. 2.) He is very rich but he is a miser. 3.) The children wore new clothes and went to the temple. 4.) The thief saw the POLICEMAN, so he ran away. 5.) Study well or I will not take you out.Find the average speed between average velocity and average B9:00 illam A and B goh A g:00 ooam radius 24h e 3gam Q:00:33Find the average speed between average velocity and average B9:00 illam A and B goh A g:00 ooam radius 24h e 3gam Q:00:33Find the average speed between average velocity and average B9:00 illam A and B goh A g:00 ooam radius 24h e 3gam Q:00:33 njjdfk job is to be a brainly teacher give me the rank

18829.

Maximize Z = -x + 2y, subject to the constraints arex>_3,x+ y >_5, x + 2 y >_6 and x, y>_0.

Answer»

Maximize Z = -X + 2y, subject to the CONSTRAINTS are

x>_3,x+ y >_5, x + 2 y >_6 and x, y>_0.

➡ 0 , 1 , 3 & 65 subject to the constraints.✔✏Maximize Z = -x + 2y,........

[ Change compound to complex sentences ]

1.) I will reach the office and I shall talk to him.

2.) He is very rich but he is a miser.

3.) The children wore new clothes and went to the temple.

4.) The thief saw the POLICEMAN, so he ran away.

5.) Study well or I will not take you out.Find the average

speed between

average velocity

and average

B9:00 illam

A and B

goh

A g:00 ooam

radius

24h

e

3gam

Q:00:33Find the average

speed between

average velocity

and average

B9:00 illam

A and B

goh

A g:00 ooam

radius

24h

e

3gam

Q:00:33Find the average

speed between

average velocity

and average

B9:00 illam

A and B

goh

A g:00 ooam

radius

24h

e

3gam

Q:00:33

njjdfk job is to be a brainly teacher give me the rank

Discussion

18830.	Which was the best ezio moment in assassin's creed, according to you?
Answer» ANSWER: the SECOND ONE now can ANYBODY FOLLOW me

18830.

Which was the best ezio moment in assassin's creed, according to you?

Answer»

ANSWER:

the SECOND ONE now can ANYBODY FOLLOW me

Discussion

18831.	Use Euclid's division algorithm to find the H.C.F of 135 and 225 .
Answer» ANSWER: HCF is 45 Step-by-step explanation: 225=135+90 135=90+45 90=45×2

18831.

Use Euclid's division algorithm to find the H.C.F of 135 and 225 .

Answer»

ANSWER:

HCF is 45

Step-by-step explanation:

225=135+90

135=90+45

90=45×2

Discussion

18832.	4 and 2/3 form a quadratic equation
Answer» Answer: heya.... Step-by-step EXPLANATION: the quadratic equation is.... ${x}^{2} - (4 + \frac{2}{3} )x + 4 \times \frac{2}{3}$ $\: \: \: \: \: = {x}^{2} - \frac{14}{3} x + \frac{8}{3}$ $\: \: \: \: = 3 {x}^{2} - 14x + 8$ have a great DAY... above ONE is the equation...

18832.

4 and 2/3 form a quadratic equation

Answer»

Answer:

heya....

Step-by-step EXPLANATION:

the quadratic equation is....

${x}^{2} - (4 + \frac{2}{3} )x + 4 \times \frac{2}{3}$

$\: \: \: \: \: = {x}^{2} - \frac{14}{3} x + \frac{8}{3}$

$\: \: \: \: = 3 {x}^{2} - 14x + 8$

have a great DAY...

above ONE is the equation...

Discussion

18833.	X2+x-2 find the equation
Answer» Step-by-step explanation: Given, x2 + X - 2 = 0 x2 - (2 - x) = 0 So as the solution is the INTERSECTION of y = x2 and y = 2 - x They intersect at x = - 2,x = 1 So solution are - 2,1

18833.

X2+x-2 find the equation

Answer»

Step-by-step explanation:

Given, x2 + X - 2 = 0 x2 - (2 - x) = 0

So as the solution is the INTERSECTION of y = x2 and y = 2 - x They intersect at x = - 2,x = 1 So solution are - 2,1

Discussion

18834.	(5/9)^-2×(3/5)^-3×(3/5)^0Evaluate
Answer» ANSWER: WAIT wait I am FINDING the RIGHT answer

18834.

(5/9)^-2×(3/5)^-3×(3/5)^0Evaluate

Answer»

ANSWER:

WAIT wait I am FINDING the RIGHT answer

Discussion

18835.	15(x-1)-4x+3) = 2(7+x)
Answer» Step-by-step explanation: 15(x-1)-(4x+3)=2(7+x) 15x-15-4x-3=14+2x 11x-18=14+2x -18-14=2x-11x -32=-9x 9x=32 x=32/9 Mark this as BRAIN LIST ANSWER

18835.

15(x-1)-4x+3) = 2(7+x)

Answer»

Step-by-step explanation:

15(x-1)-(4x+3)=2(7+x)

15x-15-4x-3=14+2x

11x-18=14+2x

-18-14=2x-11x

-32=-9x

9x=32

x=32/9

Mark this as BRAIN LIST ANSWER

Discussion

18836.	-23X-75 is multiplicative inverse
Answer» YES it is a MULTIPLICATION INVERSE the ANSWER is 1725

18836.

-23X-75 is multiplicative inverse

Answer»

YES it is a MULTIPLICATION INVERSE

the ANSWER is 1725

Discussion

18837.	If one of the zeros of the cubic polynomial is (-1) then what will be the product of other two zeros
Answer» ANSWER: PLEASE FOLLOW me make me a BRAINLIST

18837.

If one of the zeros of the cubic polynomial is (-1) then what will be the product of other two zeros

Answer»

ANSWER:

PLEASE FOLLOW me

make me a BRAINLIST

Discussion

18838.	16. Represent the following data in a table:"There are in all 850 students in 10th 11th and 12th standards of a school. Among them555 are boys. There are 200 boys and 150 girls in 10th standards. In 11th standard thereare 275 students of which, 80 are girls.Y
Answer» Answer: There are 200 BOYS and 150 girls in 10th STANDARDS. In 11TH standard there are 275 students of which, 80 are girls in life that is fake and DOZED off it.

18838.

16. Represent the following data in a table:"There are in all 850 students in 10th 11th and 12th standards of a school. Among them555 are boys. There are 200 boys and 150 girls in 10th standards. In 11th standard thereare 275 students of which, 80 are girls.Y

Answer»

Answer:

There are 200 BOYS and 150 girls in 10th STANDARDS. In 11TH standard there

are 275 students of which, 80 are girls in life that is fake and DOZED off it.

Discussion

18839.	Please answeri. The number in first row is _______. ii. The number in second row is ______. iii. The number in third row is _______. iv. The number in fourth row is ______.
Answer» Answer: 1)234 2)123 3)335 4)451

18839.

Please answeri. The number in first row is ___. ii. The number in second row is . iii. The number in third row is _. iv. The number in fourth row is __.

Answer»

Answer:

1)234

2)123

3)335

4)451

Discussion

18840.	F the roots of ax2 + bx + c = 0 are in the ratio m : n, then(a) mna² = (m + n) c²(b) mnb² = (m + n) ac(c) mn b² = (m + n)² ac(d) mnb² = (m – n)² ac
Answer» Answer The correct option is : (c) mnb² = (m + N)²ac $\bf \large \underline{Given : }$ The quadratic equation is : ax² + BX + c = 0 The roots of the equation are in the ratio m:n $\bf \large \underline{Solution : }$ Let us consider α and β are the zeroes of the polynomial ax² + bx + c $\sf \alpha : \beta = m:n \\\\ \sf\implies \dfrac{\alpha}{\beta} = \dfrac{m}{n}$ We have from relation of sum of roots , $\sf sum \: of \: the \: zeroes \: = \dfrac{coefficient \: of \: x}{coefficient \: of \: {x}^{2} }$ $\sf\implies \alpha + \beta = \dfrac{-b}{a} \\\\ \sf\implies (\alpha+\beta)^{2} =( \dfrac{-b}{a})^{2} \\\\ \sf\implies \alpha^{2} + \beta^{2} + 2\alpha\beta = \dfrac{b^{2}}{a^{2}} \longrightarrow (<klux>1</klux>)$ Again, from relation of product of roots , $\sf product \: of \: zeroes = \dfrac{constant \: term}{coefficient \: of \: {x}^{2} }$ $\sf\implies \alpha\beta = \dfrac{c}{a} \longrightarrow (2)$ Dividing (1) by (2) we have , $\sf \implies \dfrac{\alpha^{2}+ \beta^{2} + 2\alpha\beta}{\alpha\beta} = \dfrac{\dfrac{b^{2}}{a^{2}}}{\dfrac{c}{a}} \\\\ \sf\implies \dfrac{\alpha}{\beta}+\dfrac{\beta}{\alpha} + 2 = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{m}{n} + \dfrac{n}{m} + 2 = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{m^{2} + n^{2} + 2mn}{mn} = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{(m+n)^{2}}{mn} = \dfrac{b^{2}}{ac} \\\\ \sf\implies (m+n)^{2}ac = mnb^{2} \\\\ \sf\implies mnb^{2} = (m+n)^{2} ac$

18840.

F the roots of ax2 + bx + c = 0 are in the ratio m : n, then(a) mna² = (m + n) c²(b) mnb² = (m + n) ac(c) mn b² = (m + n)² ac(d) mnb² = (m – n)² ac

Answer»

Answer

The correct option is :

(c) mnb² = (m + N)²ac

$\bf \large \underline{Given : }$

The quadratic equation is :

ax² + BX + c = 0
The roots of the equation are in the ratio m:n

$\bf \large \underline{Solution : }$

Let us consider α and β are the zeroes of the polynomial ax² + bx + c

$\sf \alpha : \beta = m:n \\\\ \sf\implies \dfrac{\alpha}{\beta} = \dfrac{m}{n}$

We have from relation of sum of roots ,

$\sf sum \: of \: the \: zeroes \: = \dfrac{coefficient \: of \: x}{coefficient \: of \: {x}^{2} }$

$\sf\implies \alpha + \beta = \dfrac{-b}{a} \\\\ \sf\implies (\alpha+\beta)^{2} =( \dfrac{-b}{a})^{2} \\\\ \sf\implies \alpha^{2} + \beta^{2} + 2\alpha\beta = \dfrac{b^{2}}{a^{2}} \longrightarrow (<klux>1</klux>)$

Again, from relation of product of roots ,

$\sf product \: of \: zeroes = \dfrac{constant \: term}{coefficient \: of \: {x}^{2} }$

$\sf\implies \alpha\beta = \dfrac{c}{a} \longrightarrow (2)$

Dividing (1) by (2) we have ,

$\sf \implies \dfrac{\alpha^{2}+ \beta^{2} + 2\alpha\beta}{\alpha\beta} = \dfrac{\dfrac{b^{2}}{a^{2}}}{\dfrac{c}{a}} \\\\ \sf\implies \dfrac{\alpha}{\beta}+\dfrac{\beta}{\alpha} + 2 = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{m}{n} + \dfrac{n}{m} + 2 = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{m^{2} + n^{2} + 2mn}{mn} = \dfrac{b^{2}}{ac} \\\\ \sf\implies \dfrac{(m+n)^{2}}{mn} = \dfrac{b^{2}}{ac} \\\\ \sf\implies (m+n)^{2}ac = mnb^{2} \\\\ \sf\implies mnb^{2} = (m+n)^{2} ac$

Discussion

18841.	No. of divisors of 38808(except 1 and itself) is
Answer» ANSWER: So, NUMBER of divisors = (3 + 1) (2 + 1) (2 + 1) (1 + 1) = 72. This includes two divisors 1 and 38808. Hence, the required number of divisors = 72 - 2 = 70

18841.

No. of divisors of 38808(except 1 and itself) is

Answer»

ANSWER:

So, NUMBER of divisors = (3 + 1) (2 + 1) (2 + 1) (1 + 1) = 72. This includes two divisors 1 and 38808. Hence, the required number of divisors = 72 - 2 = 70

Discussion

18842.	The circumference of a circle = 30pi. What is the diameter, radius, and the arc length of a 270° arc?
Answer» ANSWER: RADIUS = 15 UNITS diameter = 30 units

18842.

The circumference of a circle = 30pi. What is the diameter, radius, and the arc length of a 270° arc?

Answer»

ANSWER:

RADIUS = 15 UNITS

diameter = 30 units

Discussion

18843.	-. The exterior angles obtained on producing the base of a triangleboth ways are 104° and 136º. Find the angles of the triangle. answer this
Answer» Answer : 44° , 60° , 76° Note : ★ Linear pairs of angles : Two adjacent angles lying on the same straight LINE is called Linear pair of angles . ★ Sum of linear pair of angles is 180° . ★ Linear pair of angles are SUPPLEMENTARY . ★ Angle sum property of a triangle : The sum of all the INTERIOR angles of a triangle is 180° . Solution : Let's US assume ; • A ∆ABC with base BC . • BC produced along DE . • ∠ABD = 104° and ∠ACE = 136°. Now , => ∠ABD + ∠ABC = 180° { linear pair } => 104° + ∠ABC = 180° => ∠ABC = 180° - 104° => ∠ABC = 76° Also , => ∠ACE + ∠ACB = 180° { linear pair } => 136° + ∠ACB = 180° => ∠ACB = 180° - 136° => ∠ACB = 44° Also , => ∠ABC + ∠ACB + ∠BAC = 180° { angle sum property of ∆ } => 76° + 44° + ∠BAC = 180° => 120° + ∠BAC = 180° => ∠BAC = 180° - 120° => ∠BAC = 60° Hence , 44° , 60° , 76° are the angles of the triangle under CONSIDERATION .

18843.

-. The exterior angles obtained on producing the base of a triangleboth ways are 104° and 136º. Find the angles of the triangle. answer this

Answer»

Answer :

44° , 60° , 76°

Note :

★ Linear pairs of angles : Two adjacent angles lying on the same straight LINE is called Linear pair of angles .

★ Sum of linear pair of angles is 180° .

★ Linear pair of angles are SUPPLEMENTARY .

★ Angle sum property of a triangle : The sum of all the INTERIOR angles of a triangle is 180° .

Solution :

Let's US assume ;

• A ∆ABC with base BC .

• BC produced along DE .

• ∠ABD = 104° and ∠ACE = 136°.

Now ,

=> ∠ABD + ∠ABC = 180° { linear pair }

=> 104° + ∠ABC = 180°

=> ∠ABC = 180° - 104°

=> ∠ABC = 76°

Also ,

=> ∠ACE + ∠ACB = 180° { linear pair }

=> 136° + ∠ACB = 180°

=> ∠ACB = 180° - 136°

=> ∠ACB = 44°

Also ,

=> ∠ABC + ∠ACB + ∠BAC = 180°

{ angle sum property of ∆ }

=> 76° + 44° + ∠BAC = 180°

=> 120° + ∠BAC = 180°

=> ∠BAC = 180° - 120°

=> ∠BAC = 60°

Hence ,

44° , 60° , 76° are the angles of the triangle under CONSIDERATION .

Discussion

18844.	If a,b are the roots of the quadratic equation x^2+x+1=0 find 1/a +1/b
Answer» ANSWER: HEYA...... Step-by-step EXPLANATION: the ans is -1 have a GREAT dayh......

18844.

If a,b are the roots of the quadratic equation x^2+x+1=0 find 1/a +1/b

Answer»

ANSWER:

HEYA......

Step-by-step EXPLANATION:

the ans is -1

have a GREAT dayh......

Discussion

18845.	Find the LCM of the following number by prime factorization method 18,24,36
Answer» ANSWER: The least common multiple 72 is a product of common & ODD prime factors between the integers which is divisible by each one an integer of this same group. The step by step work for LCM of 18, 24 and 36 may USEFUL to understand how to find LCM for TWO or three numbers. Step-by-step EXPLANATION:

18845.

Find the LCM of the following number by prime factorization method 18,24,36

Answer»

ANSWER:

The least common multiple 72 is a product of common & ODD prime factors between the integers which is divisible by each one an integer of this same group. The step by step work for LCM of 18, 24 and 36 may USEFUL to understand how to find LCM for TWO or three numbers.

Step-by-step EXPLANATION:

Discussion

18846.	Solve the following quadratic equations
Answer» ANSWER: I can't solve this QUADRATIC equation FOLLOW me

18846.

Solve the following quadratic equations

Answer»

ANSWER:

I can't solve this QUADRATIC equation

FOLLOW me

Discussion

18847.	A number in creased by30% gives 520.Find that number
Answer» ANSWER: X x 30/100 + X = 520 therefore X = 400 400× 30/100 = 120 400 + 120 = 520 so the number = 400 please follow and mark BRAINLIEST

18847.

A number in creased by30% gives 520.Find that number

Answer»

ANSWER:

X x 30/100 + X = 520

therefore X = 400

400× 30/100 = 120

400 + 120 = 520

so the number = 400

please follow

and mark BRAINLIEST

Discussion

18848.	The market price of a cycle is 5600.A discount is offered on this cycle. Accidentally, the cashier applied the discount twice while making the bill. As a result, it was sold at a price of Rs 1400. Still a profit of(2/3) % is earned. Had the cashier applied discount only once, what would have been parcent profit?
Answer» ANSWER: A) 4284 Step-by-step EXPLANATION: The selling price of the cycle = 5600 ×90100×85100 = Rs. 4284/- Please VOTE if this answer is helpful Please mark me as brainalist JAIHIND

18848.

The market price of a cycle is 5600.A discount is offered on this cycle. Accidentally, the cashier applied the discount twice while making the bill. As a result, it was sold at a price of Rs 1400. Still a profit of(2/3) % is earned. Had the cashier applied discount only once, what would have been parcent profit?

Answer»

ANSWER:

A) 4284

Step-by-step EXPLANATION:

The selling price of the cycle

= 5600 ×90100×85100

= Rs. 4284/-

Please VOTE if this answer is helpful

Please mark me as brainalist

JAIHIND

Discussion

18849.	325can be expressed as a product of its primes as?
Answer» ANSWER: $325 = {5}^{2} \times 13$

18849.

325can be expressed as a product of its primes as?

Answer»

ANSWER:

$325 = {5}^{2} \times 13$

Discussion

18850.	How to get motivated for our goals?
Answer» Answer:- Here are some tips for starting out: Start small. I've said this before, but that's because it's ONE of the most important tips in motivating yourself toward a goal. ... One goal. ... Examine your motivation. ... Really, really want it. ... COMMIT PUBLICLY. ... Get excited. ... BUILD anticipation. ... PRINT it out, post it up.

18850.

How to get motivated for our goals?

Answer»

Answer:-

Here are some tips for starting out:

Start small. I've said this before, but that's because it's ONE of the most important tips in motivating yourself toward a goal. ...
One goal. ...
Examine your motivation. ...
Really, really want it. ...
COMMIT PUBLICLY. ...
Get excited. ...
BUILD anticipation. ...
PRINT it out, post it up.

Discussion

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