332354 + Interview Questions in Secondary School in Math Page 395 InterviewSolution

19701.	the sound from a burst of fireworks takes 0.99 seconds to reach your ear. If the burst occurs 330 metres above you, estimate the speed of sound in air
Answer» Answer: 333.33 m/s Step-by-step EXPLANATION: Simply using, SPEED,v=Distance/Time HOPE it helps. PLEASE MARK AS BRAINLIEST...!

19701.

the sound from a burst of fireworks takes 0.99 seconds to reach your ear. If the burst occurs 330 metres above you, estimate the speed of sound in air

Answer»

Answer:

333.33 m/s

Step-by-step EXPLANATION:

Simply using, SPEED,v=Distance/Time

HOPE it helps.

PLEASE MARK AS BRAINLIEST...!

Discussion

19702.	The polynomial of type ax'+bx+c, when a=0a) Linearb) Quadraticc) Cubicd) Biquadratic. 2Through which of the following point, the graph of y = -xa) (1,1)b) (0, 1)c) (-1, 1)d) (0,0)
Answer» Step-by-step explanation: 1. linear 2.c hope this helpss

19702.

The polynomial of type ax'+bx+c, when a=0a) Linearb) Quadraticc) Cubicd) Biquadratic. 2Through which of the following point, the graph of y = -xa) (1,1)b) (0, 1)c) (-1, 1)d) (0,0)

Answer»

Step-by-step explanation:

1. linear

2.c

hope this helpss

Discussion

19703.	Find the place value of 219.12 place value of .1
Answer» Answer: The PLACE VALUE of .1 in 219.12 is the tenths place Pls MARK as brainliest and follow !!!!!!!

19703.

Find the place value of 219.12 place value of .1

Answer»

Answer:

The PLACE VALUE of .1 in 219.12 is the tenths place

Pls MARK as brainliest and follow !!!!!!!

Discussion

19704.	Find the cartesian equation of the line passing through the points , A(2,−1,3) and B(4,2,1)is?
Answer» ANSWER: The equation of line is : $\dfrac{x-<klux>2</klux>}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$ Step-by-step explanation: Given : Point A( 2 , -1 , 3) and B( 4 , 2 , 1 ). We KNOW, equation of line PASSING through two given points is : $\dfrac{x-x_1}{x_2-x_1}=\dfrac{y-y_1}{y_2-y_1}=\dfrac{z-z_1}{z_2-z_1}$ ( Here two points are A $(x_1,y_1,z_1)$ and B $(x_2,y_2,z_2)$ ) Putting VALUE of point A and B in above equation. We get , $\dfrac{x-2}{4-2}=\dfrac{y+1}{2+1}=\dfrac{z-3}{1-3}\\\\\dfrac{x-2}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$ The equation of line is : $\dfrac{x-2}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$ Hence , this is the required solution. Learn More : Geometry brainly.in/question/15663823

19704.

Find the cartesian equation of the line passing through the points , A(2,−1,3) and B(4,2,1)is?

Answer»

ANSWER:

The equation of line is :

$\dfrac{x-<klux>2</klux>}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$

Step-by-step explanation:

Given :

Point A( 2 , -1 , 3) and B( 4 , 2 , 1 ).

We KNOW, equation of line PASSING through two given points is :

$\dfrac{x-x_1}{x_2-x_1}=\dfrac{y-y_1}{y_2-y_1}=\dfrac{z-z_1}{z_2-z_1}$

( Here two points are A $(x_1,y_1,z_1)$ and B $(x_2,y_2,z_2)$ )

Putting VALUE of point A and B in above equation.

We get ,

$\dfrac{x-2}{4-2}=\dfrac{y+1}{2+1}=\dfrac{z-3}{1-3}\\\\\dfrac{x-2}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$

The equation of line is :

$\dfrac{x-2}{2}=\dfrac{y+1}{3}=\dfrac{z-3}{-2}$

Hence , this is the required solution.

Learn More :

Geometry

brainly.in/question/15663823

Discussion

19705.	Draw a line parallel to the given line xy at a distance of 4.5m. (Construct)
Answer» [email PROTECTED] @s BRAINLIEST @NSWER [email protected]

19705.

Draw a line parallel to the given line xy at a distance of 4.5m. (Construct)

Answer»

[email PROTECTED] @s BRAINLIEST @NSWER [email protected]

Discussion

19706.	19.One child jumps 3 feet high and another jumps 4 feet high. If both the children continuejumping together in same direction then after how many feet they will be together again?Sol.
Answer» Answer: 12 FEET they will meet Step-by-step explanation: HCF of 3 AND 4 is 12 3 * 4 = 12 4 * 3 = 12

19706.

19.One child jumps 3 feet high and another jumps 4 feet high. If both the children continuejumping together in same direction then after how many feet they will be together again?Sol.

Answer»

Answer:

12 FEET they will meet

Step-by-step explanation:

HCF of 3 AND 4 is 12

3 * 4 = 12

4 * 3 = 12

Discussion

19707.	5. Construct a 5 x 5 magic square using all even numbers from 1 to 50.
Answer» ANSWER: +×÷=__÷¥@,@^#;#;#;'akkaoaushshdgdbsbshshwha^@^@&@&__

19707.

5. Construct a 5 x 5 magic square using all even numbers from 1 to 50.

Answer»

ANSWER:

+×÷=__÷¥@,@^#;#;#;'akkaoaushshdgdbsbshshwha^@^@&@&__

Discussion

19708.	9. Find the equation of the lines passing throughthe point (4,0) and equally inclined to theco-ordinate axes.(i)YABol(4,0)JO.(4,0)X
Answer» ANSWER: 4,0this is the answer hquaiiwi

19708.

9. Find the equation of the lines passing throughthe point (4,0) and equally inclined to theco-ordinate axes.(i)YABol(4,0)JO.(4,0)X

Answer»

ANSWER:

4,0this is the answer hquaiiwi

Discussion

19709.	Find the common difference of an A.P in which t18 - t14 = 32
Answer» ANSWER: d=8 Step-by-step EXPLANATION: HOPE this will HELP U ......

19709.

Find the common difference of an A.P in which t18 - t14 = 32

Answer»

ANSWER:

d=8

Step-by-step EXPLANATION:

HOPE this will HELP U ......

Discussion

19710.	The centroid of the ∆ABC is at the orgin.Ifthe points B and C are (0,5,0) and (0,0,5) respectively then the point A is
Answer» 5,0,0 the QUESTION is WRONG

19710.

The centroid of the ∆ABC is at the orgin.Ifthe points B and C are (0,5,0) and (0,0,5) respectively then the point A is

Answer»

5,0,0

the QUESTION is WRONG

Discussion

19711.	Write the following in roster form A={x\|x is a two digit natural number whose sum of digits is 9}B={x\|x=4n,n E W,x is smaller than 20}
Answer» Answer: A={x\|x is a two digit NATURAL number WHOSE SUM of digits is 9} A = { 18, 27,36,45,54,63,72,81 } B={x\|x=4n,n € W,x is smaller than 20} B = {0,4,8,12,16 } Therefore., A = { 18,27,36,45,54,63,72,81 } B = { 0,4,8,12,16 } •••♪

19711.

Write the following in roster form A={x|x is a two digit natural number whose sum of digits is 9}B={x|x=4n,n E W,x is smaller than 20}

Answer»

Answer:

A={x|x is a two digit NATURAL number WHOSE SUM of digits is 9}

A = { 18, 27,36,45,54,63,72,81 }

B={x|x=4n,n € W,x is smaller than 20}

B = {0,4,8,12,16 }

Therefore.,

A = { 18,27,36,45,54,63,72,81 }

B = { 0,4,8,12,16 }

•••♪

Discussion

19712.	3. Prateek joined spoken English classes on 10 May 2015 and completedthe course on 28 July 2015. What was the duration of the course?
Answer» DURATION of the COURSE is 80DAYS

Discussion

19713.	(iv) If the line r = (– 2 j + 3k) +a (2î + i + 2k) is parallel tothe plane r:(3-2 +mk)=10, then value of m is
Answer» Answer: The value of m is - 2 for the given vectors Step-by-step explanation: Given as : The line r = ( - 2 J + 3 K ) + a ( 2 i + j + 2 k) The plane = r . ( 3 i - 2 j + m k ) = 10 According to question B = ( 2 i + j + 2 k ) n = ( 3 i - 2 j + m k ) The line is parallel to the plane So, b. n = 0 i.e ( 2 i + j + 2 k ) . ( 3 i - 2 j + m k ) = 0 Or, ( 2 i . 3 i ) - ( 2 i . 2 j ) + ( 2 i . m k ) - ( j . 2 j ) + ( j . m k ) + ( 2 k . 3 i ) - ( 2 k . 2 j) + ( 2 k . m k ) = 0 Or, 6 - 0 + 0 - 2 + 0 + 0 - 0 + 2 m = 0 ( ∵ i . i = j . j = k . k = 1 ) Or, 4 + 2 m = 0 Or, 2 m = - 4 ∴ m = $\dfrac{-4}{2}$ i.e m = - 2 Hence, The value of m is - 2 for the given vectors Answer

19713.

(iv) If the line r = (– 2 j + 3k) +a (2î + i + 2k) is parallel tothe plane r:(3-2 +mk)=10, then value of m is

Answer»

Answer:

The value of m is - 2 for the given vectors

Step-by-step explanation:

Given as :

The line r = ( - 2 J + 3 K ) + a ( 2 i + j + 2 k)

The plane = r . ( 3 i - 2 j + m k ) = 10

According to question

B = ( 2 i + j + 2 k )

n = ( 3 i - 2 j + m k )

The line is parallel to the plane

So, b. n = 0

i.e ( 2 i + j + 2 k ) . ( 3 i - 2 j + m k ) = 0

Or, ( 2 i . 3 i ) - ( 2 i . 2 j ) + ( 2 i . m k ) - ( j . 2 j ) + ( j . m k ) + ( 2 k . 3 i ) - ( 2 k . 2 j) + ( 2 k . m k ) = 0

Or, 6 - 0 + 0 - 2 + 0 + 0 - 0 + 2 m = 0 ( ∵ i . i = j . j = k . k = 1 )

Or, 4 + 2 m = 0

Or, 2 m = - 4

∴ m = $\dfrac{-4}{2}$

i.e m = - 2

Hence, The value of m is - 2 for the given vectors Answer

Discussion

19714.	Area of the figure (plzz don't send steps) we want to confirm the answer
Answer» Answer: Answer is 68 Step-by-step EXPLANATION: PLZ mark as brainliest and FOLLOW me sorry I write WRONG answer before but this is true

19714.

Area of the figure (plzz don't send steps) we want to confirm the answer

Answer»

Answer:

Answer is 68

Step-by-step EXPLANATION:

PLZ mark as brainliest and FOLLOW me

sorry I write WRONG answer before but this is true

Discussion

19715.	9. The floor of a rectangular hall has a perimeter of 260 m. If its height is om,painting its four walls at the rate of 15 per m^2
Answer» Answer: if it's height is 0 m then there is not any WALL it's FLAT...then the cost will be 0 RS

19715.

9. The floor of a rectangular hall has a perimeter of 260 m. If its height is om,painting its four walls at the rate of 15 per m^2

Answer»

Answer:

if it's height is 0 m then there is not any WALL it's FLAT...then the cost will be 0 RS

Discussion

19716.	Sin²x - Cos²x = ..... ??
Answer» Answer: I THINK ur question is WRONG SIN ^2x+cos^2x=1 Step-by-step explanation: mark me as brainliest and FOLLOW me FRIENDS

19716.

Sin²x - Cos²x = ..... ??

Answer»

Answer:

I THINK ur question is WRONG

SIN ^2x+cos^2x=1

Step-by-step explanation:

mark me as brainliest and FOLLOW me FRIENDS

Discussion

19717.	N+6 = 27 (n=5) check
Answer» Step-by-step EXPLANATION: I HOPE you have GOT the ANSWER.

19717.

N+6 = 27 (n=5) check

Answer»

Step-by-step EXPLANATION:

I HOPE you have GOT the ANSWER.

Discussion

19718.	Find the median of the following data 16, 9, 11, 23, 7, 5, 12, 14, 8, 10, 21
Answer» Answer: HEY mate here is ur answer In this data 5,7,8,9,10,11,12,14,16,21,23 in this n is odd, so median will be the 6th TERM *<U>11* is *the* *median* *hope* it *will* *help* u *MARK* it as *BRAINLEST* *answer* ❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣

19718.

Find the median of the following data 16, 9, 11, 23, 7, 5, 12, 14, 8, 10, 21

Answer»

Answer:

HEY mate here is ur answer

In this data 5,7,8,9,10,11,12,14,16,21,23

in this n is odd,

so median will be the 6th TERM <U>11

is the median

hope it will help u MARK it as BRAINLEST answer ❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣❣

Discussion

19719.	How many 4 digit numbers have odd number of factors?
Answer» $1000, 1001, \cdot\cdot\cdot,9998,9999\:are\\Four \:digit \: numbers$ $\pink { Every\: perfect \: square \:has \:<klux>ODD</klux>}$ $\pink { number \:of \: Factors. }$ $We \:know \:that ,$ 31² = 961 ( 3 digit number ) 32² = 1024 ( 4 digit FIRST number which has odd number of factors) 99² = 9801 ( 4 digit last number which has odd number of factors ) $Number \:of \:4 \:digit \: numbers \: have \:odd\\number \: of \:factors\\ = 99 - 32 + 1 \\= 99 - 31 \\= 68$ •••♪

19719.

How many 4 digit numbers have odd number of factors?

Answer»

$1000, 1001, \cdot\cdot\cdot,9998,9999\:are\\Four \:digit \: numbers$

$\pink { Every\: perfect \: square \:has \:<klux>ODD</klux>}$

$\pink { number \:of \: Factors. }$

$We \:know \:that ,$

31² = 961 ( 3 digit number )
32² = 1024 ( 4 digit FIRST number which has odd number of factors)
99² = 9801 ( 4 digit last number which has odd number of factors )

$Number \:of \:4 \:digit \: numbers \: have \:odd\\number \: of \:factors\\ = 99 - 32 + 1 \\= 99 - 31 \\= 68$

•••♪

Discussion

19720.	Express 2 km 50 m to 45 m in the simplest form
Answer» 2050/45 . . . MARK #BRAINLIEST

Discussion

19721.	(3) How many 25 paise coins make Rs. 10 ? \|(4) Arrange in descending order : 1154, 2197, 845,523, 85(5) Expand : 62954Half of one hour =minutes.(7) 4768 ÷ 13 = 0 and R:(8) If 2 times of a number is 10. The number is(9) 52 hundreds + 91 tens + 14 ones = L
Answer» Answer: 3) 40 COINS MAKE a TEN RUPEES.

19721.

(3) How many 25 paise coins make Rs. 10 ? |(4) Arrange in descending order : 1154, 2197, 845,523, 85(5) Expand : 62954Half of one hour =minutes.(7) 4768 ÷ 13 = 0 and R:(8) If 2 times of a number is 10. The number is(9) 52 hundreds + 91 tens + 14 ones = L

Answer»

Answer:

3) 40 COINS MAKE a TEN RUPEES.

Discussion

19722.	Thout 3time and do 100in calculator
Answer» ANSWER: you can press THREE buttons on your CALCULATOR and answer will be 100 before pressing equal button on physical calculator. answer will be 100, WITHOUT pressing Zero.

19722.

Thout 3time and do 100in calculator

Answer»

ANSWER:

you can press THREE buttons on your CALCULATOR and answer will be 100 before pressing equal button on physical calculator. answer will be 100, WITHOUT pressing Zero.

Discussion

19723.	99/100= 6400-2h/6400
Answer» ANSWER: Step-by-step EXPLANATION:

19723.

99/100= 6400-2h/6400

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

19724.	Mira has 20974 rupees 80 paise, of these she had spend 10544 rupees 40 paise andremaining amount, she equally divides between her son and daughter. How manyrupees each will get?oloi07Cozio bataill be the rice of chocloc
Answer» Answer: MIRA's son and DAUGHTER will get 5215 rupees 20 paise each Step-by-step EXPLANATION: Amount of money Mira had = 20974 rupees 80 paise Amount of money Mira spent = 10544 rupees 40 paise Amount left with Mira after SPENDING = Total money - Money spent =20974 rupees 80 paise - 10544 rupees 40 paise =10430 rupees 40 paise she equally divides 10430 rupees 40 paise between her son and daughter. ie 10430 rupees 40 paise /2 =5215 rupees 20 paise Mira's son and daughter will get 5215 rupees 20 paise each

19724.

Mira has 20974 rupees 80 paise, of these she had spend 10544 rupees 40 paise andremaining amount, she equally divides between her son and daughter. How manyrupees each will get?oloi07Cozio bataill be the rice of chocloc

Answer»

Answer:

MIRA's son and DAUGHTER will get 5215 rupees 20 paise each

Step-by-step EXPLANATION:

Amount of money Mira had = 20974 rupees 80 paise

Amount of money Mira spent = 10544 rupees 40 paise

Amount left with Mira after SPENDING = Total money - Money spent

=20974 rupees 80 paise - 10544 rupees 40 paise

=10430 rupees 40 paise

she equally divides 10430 rupees 40 paise between her son and daughter. ie

10430 rupees 40 paise /2

=5215 rupees 20 paise

Mira's son and daughter will get 5215 rupees 20 paise each

Discussion

19725.	lenghth of rectangular field is 6 times its breath...if the lenghth of the field is 120 cm,find the breath and perameter of field...
Answer» Answer: Let length of the RECTANGLE be L Breadth = B It is given that L = 6 × B Also the length is 120 cm ∴ The breadth of the rectangle is: L = 6 × B B = L/6 B = 120/6 B = 20 cm ∴ The perimeter of the rectangular field is = 2 × (L + B) = 2 × (120 + 20) = 2 × 140 = 280 cm

19725.

lenghth of rectangular field is 6 times its breath...if the lenghth of the field is 120 cm,find the breath and perameter of field...

Answer»

Answer:

Let length of the RECTANGLE be L

Breadth = B

It is given that L = 6 × B

Also the length is 120 cm

∴ The breadth of the rectangle is:

L = 6 × B

B = L/6

B = 120/6

B = 20 cm

∴ The perimeter of the rectangular field is = 2 × (L + B)

= 2 × (120 + 20)

= 2 × 140

= 280 cm

Discussion

19726.	(1) Area = 35y2 + 13y - 12a we have usiNg spiliting the middle term
Answer» ANSWER: I THOUGHT it's your SOLUTION. It MAY HELP you

19726.

(1) Area = 35y2 + 13y - 12a we have usiNg spiliting the middle term

Answer»

ANSWER:

I THOUGHT it's your SOLUTION.

It MAY HELP you

Discussion

19727.	Which is the best institution for the preparation of chartered accountant
Answer» Answer: I think TIME is best INSTITUTE for CHARTERED ACCOUNTANT

19727.

Which is the best institution for the preparation of chartered accountant

Answer»

Answer:

I think TIME is best INSTITUTE for CHARTERED ACCOUNTANT

Discussion

19728.	5+2root3 /7+4root3 = a-b root3
Answer» ANSWER: a = 11 b= 16 Step-by-step explanation: 5 + 2root3 / 7 + 4root3 =( 5+ 2root3) ( 7 - 4root3 ) / ( 7+ 4root3) ( 7 - 4root3 ) = 35 - 20root3 + 14root3 - 24 / 49 - 48 = 11 - 16root3 PLEASE MARK AS BRAINLIEST....

19728.

5+2root3 /7+4root3 = a-b root3

Answer»

ANSWER:

a = 11

b= 16

Step-by-step explanation:

5 + 2root3 / 7 + 4root3

=( 5+ 2root3) ( 7 - 4root3 ) / ( 7+ 4root3) ( 7 - 4root3 )

= 35 - 20root3 + 14root3 - 24 / 49 - 48

= 11 - 16root3

PLEASE MARK AS BRAINLIEST....

Discussion

19729.	a grnerator uses 10 litres of diesel in 2 hours .if thr power cut lasted for 7 hours .how much diesel was used
Answer» Answer: VOLUME of DIESEL NEEDED for 1 hr = 10/2 =5 l then for 7 hr... amount of diesel req = 7×5 =35 L hope it helpes....... mark brainliest

19729.

a grnerator uses 10 litres of diesel in 2 hours .if thr power cut lasted for 7 hours .how much diesel was used

Answer»

Answer:

VOLUME of DIESEL NEEDED for 1 hr = 10/2 =5 l

then for 7 hr...

amount of diesel req = 7×5 =35 L

hope it helpes.......

mark brainliest

Discussion

19730.	Find the value of 36 % of 250
Answer» Answer: HEY mate just FOLLOW the language here 36% means 36 by 100 because we take % as hundred always and of means × so the answer is 36÷100 × 250 = 90 HOPE it HELPS you

19730.

Find the value of 36 % of 250

Answer»

Answer:

HEY mate just FOLLOW the language

here 36% means 36 by 100 because we take % as hundred always

and of means ×

so the answer is

36÷100 × 250

= 90

HOPE it HELPS you

Discussion

19731.	Draw a cirlce with centre O and radius 3.2cm.Mark a point x on the circle.Draw a tangent passing through point x to the circle without using the centre
Answer» Step-by-step EXPLANATION: I HOPE it is HELPFUL for U

19731.

Draw a cirlce with centre O and radius 3.2cm.Mark a point x on the circle.Draw a tangent passing through point x to the circle without using the centre

Answer»

Step-by-step EXPLANATION:

I HOPE it is HELPFUL for U

Discussion

19732.	Find the value of k if x-2 is a factor of polynomial P(x) =2x³-6x²+5x+k
Answer» <P>Answer: k= -2 Step-by-step explanation: p(X)=2x³-6x²+5x+k p(2)=2×2³-6×2²+5×2+k=0 or 16-24+10+k=0 or 2+k=0 k= -2 Mark it as brainliest!!!!

19732.

Find the value of k if x-2 is a factor of polynomial P(x) =2x³-6x²+5x+k

Answer»

<P>Answer:

k= -2

Step-by-step explanation:

p(X)=2x³-6x²+5x+k

p(2)=2×2³-6×2²+5×2+k=0

or 16-24+10+k=0

or 2+k=0

k= -2

Mark it as brainliest!!!!

Discussion

19733.	19, 25, 23, 20,9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20Find the median of the above data.
Answer» Answer: 10 is the MEDIAN HOPE it HELPS .

19733.

19, 25, 23, 20,9, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20Find the median of the above data.

Answer»

Answer:

10 is the MEDIAN HOPE it HELPS .

Discussion

19734.	father and son together complete a task in 15 days. if one day work of father and son is 3 times one day work of his son. find the number of days required by each alone to complete the task.
Answer» Answer: FATHER alone COMPLETE the work in 20 days ND son in 60 days

19734.

father and son together complete a task in 15 days. if one day work of father and son is 3 times one day work of his son. find the number of days required by each alone to complete the task.

Answer»

Answer:

FATHER alone COMPLETE the work in 20 days ND son in 60 days

Discussion

19735.	Show that the Four Points (- 6, 0 ) (- 2, 2) (- 2, - 8) and (1,1)are concyclic
Answer» we have to show that four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) are concyclic. SOLUTION : four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) to be concyclic only if they should lie on a circle. let a circle of EQUATION is ... x² + y² + 2gx + 2fy + C = 0 if (-6,0) lies on the circle it should satisfy the equation. (-6)² + 0² + 2g(-6) + 2f(0) + c = 0 ⇒36 - 12g + c = 0 .........(1) similarly, (-2, 2) lies on the circle, so, (-2)² + 2² + 2g(-2) + 2f(2) + c = 0 8 - 4g + 4f + c = 0 ........(2) and (-2,-8) lies on the circle it should satisfy the equation. (-2)² + (-8)² + 2g(-2) + 2f(-8) + c = 0 ⇒68 - 4g - 16g + c = 0 ........(3) after solving EQUATIONS (1), (2) and (3) we get c = -12, g = 2 and f = 3 so the equation is ... x² + y² + 4x + 6y - 12 = 0..........(4) here the fourth point should automatically satisfy this equation for the points to be concyclic. now putting (1,1) in equation (4), (1)² + (1)² + 4(1) + 6(1) - 12 = 12 - 12 = 0 Therefore four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) are concyclic.

19735.

Show that the Four Points (- 6, 0 ) (- 2, 2) (- 2, - 8) and (1,1)are concyclic

Answer»

we have to show that four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) are concyclic.

SOLUTION : four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) to be concyclic only if they should lie on a circle.

let a circle of EQUATION is ...

x² + y² + 2gx + 2fy + C = 0

if (-6,0) lies on the circle it should satisfy the equation.

(-6)² + 0² + 2g(-6) + 2f(0) + c = 0

⇒36 - 12g + c = 0 .........(1)

similarly, (-2, 2) lies on the circle,

so, (-2)² + 2² + 2g(-2) + 2f(2) + c = 0

8 - 4g + 4f + c = 0 ........(2)

and (-2,-8) lies on the circle it should satisfy the equation.

(-2)² + (-8)² + 2g(-2) + 2f(-8) + c = 0

⇒68 - 4g - 16g + c = 0 ........(3)

after solving EQUATIONS (1), (2) and (3) we get

c = -12, g = 2 and f = 3

so the equation is ...

x² + y² + 4x + 6y - 12 = 0..........(4)

here the fourth point should automatically satisfy this equation for the points to be concyclic.

now putting (1,1) in equation (4),

(1)² + (1)² + 4(1) + 6(1) - 12 = 12 - 12 = 0

Therefore four points (-6, 0), (-2, 2) , (-2,-8) and (1 ,1) are concyclic.

Discussion

19736.	a passenger can take some free luggage in a railway journey. 2 people together have 80 kg. They were charged Rs.6 and Rs.10 respectively for excess luggage. If the whole luggage belonged to 1 person he would have to pay Rs.28 as excess luggage cost. Find the weight of free luggage allowed.
Answer» Step-by-step EXPLANATION: then a passenger can take only 5 kgs as a FREE LUGGAGE

19736.

a passenger can take some free luggage in a railway journey. 2 people together have 80 kg. They were charged Rs.6 and Rs.10 respectively for excess luggage. If the whole luggage belonged to 1 person he would have to pay Rs.28 as excess luggage cost. Find the weight of free luggage allowed.

Answer»

Step-by-step EXPLANATION:

then a passenger can take only 5 kgs as a FREE LUGGAGE

Discussion

19737.	Mala's annual income is 5,34,250. She spends 74,80,250 and saves the rest.How much money does she save every month if she saves an equal amountevery month?-answer plz
Answer» this QUESTION is not POSSIBLE

19737.

Mala's annual income is 5,34,250. She spends 74,80,250 and saves the rest.How much money does she save every month if she saves an equal amountevery month?-answer plz

Answer»

this QUESTION is not POSSIBLE

Discussion

19738.	(c) first 40 whole numbers
Answer» Answer: 0 to 39..... HOPE it helpes....... MARK BRAINLIEST

19738.

(c) first 40 whole numbers

Answer»

Answer:

0 to 39.....

HOPE it helpes.......

MARK BRAINLIEST

Discussion

19739.	X+1/x=4 find the value of a) x²+1/x² b) x4+1/x4
Answer» Step-by-step EXPLANATION: a} x + 1/x = 4 (x + 1/x)^2 = 4^2 x^2 + 1/x^2 +2 = 16 x^2 + 1/x^2 = 14

19739.

X+1/x=4 find the value of a) x²+1/x² b) x4+1/x4

Answer»

Step-by-step EXPLANATION:

a} x + 1/x = 4

(x + 1/x)^2 = 4^2

x^2 + 1/x^2 +2 = 16

x^2 + 1/x^2 = 14

Discussion

19740.	He is bent _attending the meeting. Is upon correct
Answer» ANSWER: He is BENT UPON ATTENDING the meeting. Yes upon is CORRECT

19740.

He is bent _attending the meeting. Is upon correct

Answer»

ANSWER:

He is BENT UPON ATTENDING the meeting.

Yes upon is CORRECT

Discussion

19741.	Find the value of 60% of 50 kilogram
Answer» Answer: 60%of 50 KG =60×50/100

19741.

Find the value of 60% of 50 kilogram

Answer»

Answer:

60%of 50 KG =60×50/100

Discussion

19742.	(ii) Area = 35y2 + 13y – 12
Answer» ANSWER: what to do with this area please make me BRAINLEST please because of not getting brainlest iam not GOING to NEXT

19742.

(ii) Area = 35y2 + 13y – 12

Answer»

ANSWER:

what to do with this area

please make me BRAINLEST please because of not getting brainlest iam not GOING to NEXT

Discussion

19743.	The solution to the equation e2z+ez+1=0
Answer» $Given \: the \:equation \:e^{2z} + e^{z} + 1 = 0$ $Let \: x = e^{z} \: ---(1)$ $\implies (e^{z})^{2} + e^{z} + 1 = 0$ $\implies x^{2} + x + 1 = 0$ $If \: e^{z} = \omega \:Or \: e^{z} = \omega^{2}$ $\implies z = log_{e} \omega \:Or \: z = log_{e}\omega^{2}$ $\implies z = log_{e} \omega \:Or \: z = 2log_{e}\omega$ $Where , \omega = \frac{ -1±\sqrt{3}i}{2}$ •••♪

19743.

The solution to the equation e2z+ez+1=0

Answer»

$Given \: the \:equation \:e^{2z} + e^{z} + 1 = 0$

$Let \: x = e^{z} \: ---(1)$

$\implies (e^{z})^{2} + e^{z} + 1 = 0$

$\implies x^{2} + x + 1 = 0$

$If \: e^{z} = \omega \:Or \: e^{z} = \omega^{2}$

$\implies z = log_{e} \omega \:Or \: z = log_{e}\omega^{2}$

$\implies z = log_{e} \omega \:Or \: z = 2log_{e}\omega$

$Where , \omega = \frac{ -1±\sqrt{3}i}{2}$

•••♪

Discussion

19744.	Any digit having power 0 is 1 so what is 0^0 this is also 1 why??
Answer» because it is RULE in eponents book udha kr PDH lo BHAI

19744.

Any digit having power 0 is 1 so what is 0^0 this is also 1 why??

Answer»

because it is RULE in eponents book udha kr PDH lo BHAI

Discussion

19745.	3.Look at the calendars, Then, fill in the blanks.SEPTEMBER2019Sunday Monday Tuesday Wednesday Thursday Friday Saturday1 2 3 4 5 6 78 9 10 11 12 13 1415 16 17 18 19 20 2122 23 24 25 26 27 2829 30OCTOBER2019Sunday Monday Tuesday Wednesday Thursday Friday Saturday1 2 3 4 56 7 8 9 10 11 1213 14 15 16 17 18 1920 21 22 23 24 25 2627 28 29 30 31a) There are 11 days from 20 September tob) There are days from 28 September to 7 October.c) There are 9 days from to 15 October.I know
Answer» Answer: (a) 19 (b) 8 (C) 31 October

19745.

3.Look at the calendars, Then, fill in the blanks.SEPTEMBER2019Sunday Monday Tuesday Wednesday Thursday Friday Saturday1 2 3 4 5 6 78 9 10 11 12 13 1415 16 17 18 19 20 2122 23 24 25 26 27 2829 30OCTOBER2019Sunday Monday Tuesday Wednesday Thursday Friday Saturday1 2 3 4 56 7 8 9 10 11 1213 14 15 16 17 18 1920 21 22 23 24 25 2627 28 29 30 31a) There are 11 days from 20 September tob) There are days from 28 September to 7 October.c) There are 9 days from to 15 October.I know

Answer»

Answer:

(a) 19 (b) 8 (C) 31 October

Discussion

19746.	A train covered a certain distance at a uniform speed. If the train would h10km/hr faster it would have taken 2 hour less than the scheduled time and if the trainwere slower by 10 km hr, it would have taken 3 hour more than the scheduled time.Find the distance covered by the train.
Answer» ANSWER: answer will be 50 KM .HOPE it HELPS

19746.

A train covered a certain distance at a uniform speed. If the train would h10km/hr faster it would have taken 2 hour less than the scheduled time and if the trainwere slower by 10 km hr, it would have taken 3 hour more than the scheduled time.Find the distance covered by the train.

Answer»

ANSWER:

answer will be 50 KM .HOPE it HELPS

Discussion

19747.	Write 3 upon 5 as a percentage
Answer» Answer: 3/5 = 60% Step-by-step explanation: 3/5 × 100 = 60%.......

19747.

Write 3 upon 5 as a percentage

Answer»

Answer:

3/5 = 60%

Step-by-step explanation:

3/5 × 100 = 60%.......

Discussion

19748.	Rupees hundred doubles itself in how many years at the rate of 20% per annum simple interest?
Answer» ANSWER: $\boxed{\text{Answer: Time it will take for the money to double = 5 years}}$ Step-by-step EXPLANATION: $\boxed{\text{Interest = }\frac{PRT}{100}}\\\\\\\text{Double of Rs. 100 = 2 x 100 = Rs. 200}\\\\\text{Therefore, the new amount we must obtain = Rs. 200}\\\\\boxed{\text{We also know: Amount = P + I}}\\\\\text{Hence, 200 = 100 + I}\\\\\text{So, I = Rs. 100 and the given R is 20 percent}\\\\\text{Substituting in the formula we get:}\\\\\text{100 = }\frac{100 \text{ x } 20 \text{ x T}}{100}\\\\20T = 100\\\\\boxed{\text{Answer: T = 5 years}}$ Hope this helps! If it does, please mark it brainliest! THANKS :D

19748.

Rupees hundred doubles itself in how many years at the rate of 20% per annum simple interest?

Answer»

ANSWER:

$\boxed{\text{Answer: Time it will take for the money to double = 5 years}}$

Step-by-step EXPLANATION:

$\boxed{\text{Interest = }\frac{PRT}{100}}\\\\\\\text{Double of Rs. 100 = 2 x 100 = Rs. 200}\\\\\text{Therefore, the new amount we must obtain = Rs. 200}\\\\\boxed{\text{We also know: Amount = P + I}}\\\\\text{Hence, 200 = 100 + I}\\\\\text{So, I = Rs. 100 and the given R is 20 percent}\\\\\text{Substituting in the formula we get:}\\\\\text{100 = }\frac{100 \text{ x } 20 \text{ x T}}{100}\\\\20T = 100\\\\\boxed{\text{Answer: T = 5 years}}$

Hope this helps! If it does, please mark it brainliest! THANKS :D

Discussion

19749.	a purse has only 10 rupees note and 50 rupees note the number of 10 rupees note is one third of number of April rupees note if the purse has only 800 rupees to mount
Answer» ANSWER: HIII do it for the USE a DIFFERENT STORY is that you can

19749.

a purse has only 10 rupees note and 50 rupees note the number of 10 rupees note is one third of number of April rupees note if the purse has only 800 rupees to mount

Answer»

ANSWER:

HIII do it for the USE a DIFFERENT STORY is that you can

Discussion

19750.	. (a)(b)The sum of the first 15 terms in an AP is 0. If the fourth term is 12, then find thLet X be a matrix such that 6 -2x = 101ha L2 3] L-4](i) State the order of X.(ii) Find X.
Answer» Answer: . (a) (b) The sum of the first 15 TERMS in an AP is 0. If the fourth term is 12, then find th Let X be a MATRIX such that 6 -2x = 101 ha L2 3] L-4] (i) State the order of X. (ii) Find X.

19750.

. (a)(b)The sum of the first 15 terms in an AP is 0. If the fourth term is 12, then find thLet X be a matrix such that 6 -2x = 101ha L2 3] L-4](i) State the order of X.(ii) Find X.

Answer»

Answer:

. (a)

(b)

The sum of the first 15 TERMS in an AP is 0. If the fourth term is 12, then find th

Let X be a MATRIX such that 6 -2x = 101

ha L2 3] L-4]

(i) State the order of X.

(ii) Find X.

Discussion

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