332354 + Interview Questions in Secondary School in Math

1.	X+y=a+b and ax-by=a2-b2 solve this by cross multiplicationmethod
Answer» X+y=a+b ax-by=a2-b2 x+y-(a+b)=0 ax-by-(a2-b2)=0 Solving by CROSS multiplication x/(a2-b2)-[-a+b)(-b)] =x/-(a+b)a-[-(a2-b2)]=1/-b-a =x/a2-b2-(ab+b2)=y/-a2-ab+(a2-b2) =1/-b-a=x/-a2-ab=y-ab-b2=1/-(a+b) =x/-(a2+ab)=y/-(ab+b2)=1/-(a+b) =x=a2+ab/a+b,y=ab+b2/a+b =x=a(a+b)/a+b,y=b(a+b) : x=a & y=b

Discussion

2.	36x square minus 12xplus a square minus b square by discrimant find roots
Answer» Here is your ANSWER MATE....

Discussion

3.	How to find a angle between the vector
Answer» ●••••••••• Hello User •••••••••● 《《 Here is your answer》》 ________________________ Finding the Angle Between Two Vectors: 1. Identify the vectors. Write down all the INFORMATION you have concerning the two vectors. ... 2. Write down the cosine formula. ... 3. Calculate the length of each vector. ... 4. Calculate the DOT product of the two vectors. ... 5. Plug your RESULTS into the formula. ... 6. Find the angle based on the cosine. ... _____________________ ●••••• ☆Brainly Star☆ •••••●

Discussion

4.	A= {1,2,3} and R ={(1,2)}. Then which ofthe following is false.(a) R is not reflexive(b) R is not symmetric(c) R is not transitive(d) R is not equivalence.
Answer» A STATEMENT is FALSE

Discussion

5.	Write one point of similarity and difference between d x y and d x square minus y square
Answer» Both have same POWER. both have DIFFERENT COEFFICIENT.

Discussion

6.	Writa 6 pairs of prime no less than 25 whosesum divisible by 5
Answer» (2,3),(3,7),(3,17),(7,13),(17,13),(7,23) are 6 PAIRS of PRIME numbers LESS than 25 whose sum is divisible by 5.

Discussion

7.	Find the greatest number of 3 digit that can be exactly divided by 25 45 and 60
Answer» Find LCM of 25, 45, and 60: 25 = 5² 45 = 5 x 3² 60 = 5 x 3 x 2² LCM = 5² x 3² x 2² = 900 Find Greatest 3-digit number DIVISIBLE by these numbers: 999 ÷ 900 =1.11 900 x 1 = 900 Answer: The number is 900

7.

Find the greatest number of 3 digit that can be exactly divided by 25 45 and 60

Answer»

Find LCM of 25, 45, and 60:

25 = 5²

45 = 5 x 3²

60 = 5 x 3 x 2²

LCM = 5² x 3² x 2² = 900

Find Greatest 3-digit number DIVISIBLE by these numbers:

999 ÷ 900 =1.11

900 x 1 = 900

Answer: The number is 900

Discussion

8.	If the diagonals of a parallelogram are equal in length, show that the parallelogram is a rectangle.
Answer» Their is the PROVE of that...... CLEAR

Discussion

9.	The sum of 3consecutive multipicaton of 13is257. find the numers
Answer» I THINK QUESTION is WORNG

Discussion

10.	Q. If the length of rectangular plot is 3m less than twice it's breadth and area of rectangular plot is 170m^2. We need to find the dimensions of the rectangular plot.#@#$ URGENT @[email protected]
Answer» LET the breadth of the rectangular PLOT be X so the length will be 2 x - 3 according to question (2 x -3)x = 170 2x^2 - 3X = 170 2x^2-3x-170=0 by splitting the middle term the other solution is on the photo.

Discussion

11.	50+[8÷{8-(12÷5-2)}]of 1/2=?
Answer» $= 50+[8÷(8-(12÷5-2))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12}{5} -2))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12 - 10}{5} ))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-( \frac{12 - 10}{5} ))] \times \frac{1}{2} \\ \\ = 50+[8÷(8-\frac{2 }{5} )] \times \frac{1}{2} \\ \\ = 50+[8÷(\frac{40 - 2 }{5} )] \times \frac{1}{2} \\ \\ = 50+[ \frac{1}{8} \times \frac{38}{5} ] \times \frac{1}{2} \\ \\ = 50+[ \frac{38}{40} ] \times \frac{1}{2} \\ \\ = 50+\frac{38}{80} \\ \\ = \frac{4000 + 38}{80} \\ \\ = \frac{4038}{80} \\ \\ = 50.475$

Discussion

12.	Divide the sum of 3/8 and -5/12 by the reciprocal of -15/8*16/27
Answer» 3/8 + (-5/12) = 6+ (-10)/24 -4/24=-1/6=-0.166 RECIPROCAL of -15/8*16/27=216/-240=-0.9 dividing the SUM by the reciprocal = -0.9/-0.166=0.9/0.166= 5.421

Discussion

13.	What are the uses of data handling in real life?
Answer» In LIBRARY in, HOSPITAL ETC

Discussion

14.	Fiona is drawing polygons on a computer. She wants to map a regular 9-sided polygon back onto itself using a reflection. Which set of lines can Fiona choose from for her line of reflection?
Answer» FIONA will CHOOSE the FIRST ONE. 9-sided POLYGON

Discussion

15.	Find the smallest number by which 8768 must be divided so that the qoutient is a perfect cubePlz say how to do the steps
Answer» First we find cube ROOT of 8768 by prime facterisation step II- resolve 8768 into prime factors then which no. did not form the pair then the no. which is not form the pair DIVIDE by 8768 which is not form the pair

Discussion

16.	Please bro solve this class 8th question.the answer is in my bok is 44.6solve!brainliest your answer awarded
Answer» 44.6 will be the ANSWER

Discussion

17.	विक्री मूल्य पर 20 % की हानि
Answer» ..........0.20 PERCENT

Discussion

18.	Construct 2×2 matrix A where element aij are givwn by aij = (2i-j)²
Answer» (2i-j)^2 when i=1 and j=1 , (2(1)-1)^2 = 1 when i=1 and j=2 , (2(1)-2)^2 = 0 when i=2 and j=1 , (2(2)-1)^2 = 9 when i=2 and j=2 , (2(2)-2)^2 = 4 therefore the 2*2 MATRIX is \|1 0\| \|9 4\|

Discussion

19.	Construct 2×2 matrix A where element aij are given by aij = ( 2i - j )²
Answer» (2i-j)^2 when i=1 and j=1 , (2(1)-1)^2 = 1 when i=1 and j=2 , (2(1)-2)^2 = 0 when i=2 and j=1 , (2(2)-1)^2 = 9 when i=2 and j=2 , (2(2)-2)^2 = 4 therefore the 2*2 MATRIX is \|1 0\| \|9 4\|

Discussion

20.	find the smallest number by which 17496 must be divided ,so that the quotient is a perfect cube.also find the cube root of the quotient
Answer» If we divide 17496 by 24 =>729 is obtained which is a PERFECT CUBE .Quotient is 729 . The cube root of the Quotient = ${729}^{0.333333}$ which is equal to 9.

Discussion

21.	the mean of 5 numbers is 22. if one more number is included, then the mean of the new set of numbers become 24.find the included number.
Answer» Answer: The included number is 34 Step-by-step EXPLANATION: Formula used: $Mean=\frac{\Sigma{x}}{n}$ LET the included number be k Given: Mean of 5 numbers = 22 $\frac{\Sigma{x}}{5}=22$ $\Sigma{x}=225$ $\Sigma{x}=110$ when ONE more nuimber is included $New\:\Sigma{x}=110+k$ Now, $New\:Mean=\frac{New\:\Sigma{x}}{6}$ $24=\frac{110+k}{6}$ $246=110+k$ $144=110+k$ $k=34$ THEREFORE, the included number is 34

21.

the mean of 5 numbers is 22. if one more number is included, then the mean of the new set of numbers become 24.find the included number.

Answer»

Answer:

The included number is 34

Step-by-step EXPLANATION:

Formula used:

$Mean=\frac{\Sigma{x}}{n}$

LET the included number be k

Given:

Mean of 5 numbers = 22

$\frac{\Sigma{x}}{5}=22$

$\Sigma{x}=22*5$

$\Sigma{x}=110$

when ONE more nuimber is included

$New\:\Sigma{x}=110+k$

Now,

$New\:Mean=\frac{New\:\Sigma{x}}{6}$

$24=\frac{110+k}{6}$

$24*6=110+k$

$144=110+k$

$k=34$

THEREFORE, the included number is 34

Discussion

22.	2) If apples are bought at 11 for RS 10 & sold at 10 for RS 11, how much will be the gain %? a) 5% b) 4% c) 3% d) 2%
Answer» 2%......... .............

Discussion

23.	the area of a rhombus is equall to the area of a triangle whose Base and the corresponding height are 24.8cm and 16.5cm respectively. if one of the diagonal of the rhombus is 22cm find the length of the other diagonal
Answer» AREA of triangle=1/224.816.5=409.2sqcm a/q 1/222x=409.2 x=37.2sq CM

Discussion

24.	While working 7h a day, a alone can complete a piece of work in 6 days and b alone in 8 days. in what time?
Answer» Total a work 42 HOURS in 6 days While B work 8 days Total TIME required by b=42/8 in one DAY

Discussion

25.	Square root of 12544 by division method
Answer» SQUARE ROOT of 12544 in DIVISION METHOD

Discussion

26.	30°- 60° - 90° triangle theorem and 45°-45°-90° triangle theorem ?
Answer» SUM of all ANGLES =180° 30+60+90=180 180=180 LHS=RHS sum of all angles =180 45+45+90=180 180=180 LHS=RHS

Discussion

27.	The smallest natural number which leaves same remainder when it divides 1496&948
Answer» 1496=2×748. 948=2×474 =2×2×374. =2×2×237 =2×2×2×187 COMMAN FACTER =2×2=4

Discussion

28.	Verify that (x+y) - is not equal to x-1+y-1 by taking x =5 by 9 and y=-4by 3
Answer» This is the ANSWER for this

Discussion

29.	What is variance and standard deviation how it calculated
Answer» VARIANCE is NPQ......

Discussion

30.	A guy walks into a store and steals $100 from register, comes back and buys $70 worth of merchandise, pys for it with same $100 and gets $30 cash back. how much did store lose?
Answer» No ANSWER should not be GIVEN

Discussion

31.	Which of the six t-ratios are positive for the angles 210 degree?
Answer» Answer: Step-by-step explanation: 210degrees is in third QUADRANT. In third quadrant,tan and cot are POSITIVE,HENCE this is the answer tan(210)=1/√3 cot(210)=√3 hope you understood.

31.

Which of the six t-ratios are positive for the angles 210 degree?

Answer»

Answer:

Step-by-step explanation:

210degrees is in third QUADRANT.

In third quadrant,tan and cot are POSITIVE,HENCE this is the answer

tan(210)=1/√3

cot(210)=√3

hope you understood.

Discussion

32.	Please answer this question with solution
Answer» SAB KA CUBE KR do YR

Discussion

33.	2x-1 is a factor of 8x⁴+4x³-16x²+10x+m
Answer» This is a GREAT WAY to GET a NEW

Discussion

34.	How many numbers between 222 and 444 begin or end with 3?
Answer» Here is your answer 303 , 313, 323 ,333, 343 , 353 ,363 , 373 , 383 , 393 , it means 10 numbers are between 222 ANA 444 which START or end with 3

Discussion

35.	When 20% of first number is added to second number it moves to 130% of its original value. first number is what percent of second number?
Answer» FIRST NUMBER is 150%

Discussion

36.	What is irrational number between 0.8 and 0.88
Answer» .8080080008....... .812812381234......

Discussion

37.	Base is a rectangle.its diagonals intersect at o. find x of OB=5x+1andOE=2x+4
Answer» Here base is a RECTANGLE and we know DIAGONAL of rect. BISECT each other so,OB=OE 5x+1=2x+4 5x-2x=4-1 3x=3 x=1 it will HELP you

Discussion

38.	Raining on a particular day of July . Is it a equally likely event? ?
Answer» YES, because PROBABILITY of raining is more in the MONTHS of JULY and august

Discussion

39.	The parking charges of a bike at chennai railway station is 50 for first hours & 10 for subsiquently hour.If for x'hours parking charge is 7,then write a linear equation in two variable which represents this information
Answer» Bcbcjcjcjcjcjcbdfbdbd FF ff F f f f f f f f f f

Discussion

40.	What is the formula to find surface area of a cylinder and cube together?
Answer» Hello dear, Formula of Surface area of cylinder = 2πr(r+h) here 'r' is RADIUS and 'h' is height. Surface area of cube = 6 l² Here 'L' is the SIDE HOPE it helps.

Discussion

41.	Can you find a rational number whose multiplicative inverse is (-1)
Answer» Hello dear, The ANSWER will be No, We cannot FIND a rational NUMBER WHOSE MULTIPLICATIVE inverse is (-1) Hope it helps.

Discussion

42.	By what number should we multiply -8/13 so that the product may be 24?
Answer» Hello DEAR, Let the number be X ATQ, (-8/13)x = 24 => -8x/13 = 24 => x = -(1324)/8 => x = -13*3 = (-39) Therefore, -8/13 should be multiplied by -39 to get product 24. Hope it helps.

Discussion

43.	Sachin played 40 balls and hit 12 sixes.Probability of not hitting six on the next ball
Answer» Here is your answer: The probability is the ratio of what is GOING to happen on the next turn. For example: If you roll a dice and you hit SIX on all three what is the probability that you are going to hit six on the next roll. Well since how there is six sides on a dice and you want to roll a six again the probability of you going to get a 6 is 1/6 since how theirs only one SIDE with the six and theirs 6 sides one the dice. Now in this case there are 40 balls in all, but there is 12 sixes so the probability of you finding another 6 is is 12/40 since how their is 12 sixes but 40 POSSIBLE way to get a six. Therefore the answer is "12/40." Hope this helps!

43.

Sachin played 40 balls and hit 12 sixes.Probability of not hitting six on the next ball

Answer»

Here is your answer:

The probability is the ratio of what is GOING to happen on the next turn. For example: If you roll a dice and you hit SIX on all three what is the probability that you are going to hit six on the next roll. Well since how there is six sides on a dice and you want to roll a six again the probability of you going to get a 6 is 1/6 since how theirs only one SIDE with the six and theirs 6 sides one the dice.

Now in this case there are 40 balls in all, but there is 12 sixes so the probability of you finding another 6 is is 12/40 since how their is 12 sixes but 40 POSSIBLE way to get a six. Therefore the answer is "12/40."

Hope this helps!

Discussion

44.	Solutions to kalyani publishers.
Answer» Write UR question PROPERLY dear so that we can HELP uh

Discussion

45.	For all rational numbers x and y, xy = yx (true or false)
Answer» Hello dear, True, For EVERY rational numbers X and y, xy = yx let us take an EXAMPLE, x = 2/3 y = 4/3 xy = (2/3)(4/3) = 8/9 yx = (4/3)(2/3) = 8/9

Discussion

46.	For every rational number x, x*0 = x (true or false)
Answer» Hello dear, FALSE, For every rational number X, x0 = 0 But x1 = x Hope it HELPS.

Discussion

47.	-(-x) = ?-(x) = ?+(x) = ?
Answer» -(-X) = x as MINUS MULTIPLIED by minus EQUALS to PLUS -(x) = -x minus multiplied by plus equals to minus and +(x) = x

Discussion

48.	Construct a right triangle whose hypotenuse and one side measures 10cm and 8cm then construct another triangle whose sides are 4/5times the corresponding sides of this triangle
Answer» By USING FORMULA PYTHAGORAS theorum (10)2= (8)2 + (x) 2 100-64 = x2 36 = x2 6 = x so the other SIDE is 6

Discussion

49.	What does agosa means
Answer» H‍‍‍‍‍‍‍‍‍‍‍♀️‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍❤️‍‍‍‍‍‍‍‍‍‍‍‍❤️‍‍

Discussion

50.	In the figure If angle OAB =40° then find angle ACB
Answer» Step-by-step EXPLANATION: just CHANGED the NUMBER......

50.

In the figure If angle OAB =40° then find angle ACB

Answer»

Step-by-step EXPLANATION:

just CHANGED the NUMBER......

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

X+y=a+b and ax-by=a2-b2 solve this by cross multiplicationmethod

36x square minus 12xplus a square minus b square by discrimant find roots

How to find a angle between the vector

A= {1,2,3} and R ={(1,2)}. Then which ofthe following is false.(a) R is not reflexive(b) R is not symmetric(c) R is not transitive(d) R is not equivalence.

Write one point of similarity and difference between d x y and d x square minus y square

Writa 6 pairs of prime no less than 25 whosesum divisible by 5

Find the greatest number of 3 digit that can be exactly divided by 25 45 and 60

If the diagonals of a parallelogram are equal in length, show that the parallelogram is a rectangle.

The sum of 3consecutive multipicaton of 13is257. find the numers

Q. If the length of rectangular plot is 3m less than twice it's breadth and area of rectangular plot is 170m^2. We need to find the dimensions of the rectangular plot.#@#$ URGENT @[email protected]

50+[8÷{8-(12÷5-2)}]of 1/2=?

Divide the sum of 3/8 and -5/12 by the reciprocal of -15/8*16/27

What are the uses of data handling in real life?

Fiona is drawing polygons on a computer. She wants to map a regular 9-sided polygon back onto itself using a reflection. Which set of lines can Fiona choose from for her line of reflection?

Find the smallest number by which 8768 must be divided so that the qoutient is a perfect cubePlz say how to do the steps

Please bro solve this class 8th question.the answer is in my bok is 44.6solve!brainliest your answer awarded

विक्री मूल्य पर 20 % की हानि

Construct 2×2 matrix A where element aij are givwn by aij = (2i-j)²

Construct 2×2 matrix A where element aij are given by aij = ( 2i - j )²

find the smallest number by which 17496 must be divided ,so that the quotient is a perfect cube.also find the cube root of the quotient

the mean of 5 numbers is 22. if one more number is included, then the mean of the new set of numbers become 24.find the included number.

2) If apples are bought at 11 for RS 10 & sold at 10 for RS 11, how much will be the gain %? a) 5% b) 4% c) 3% d) 2%

the area of a rhombus is equall to the area of a triangle whose Base and the corresponding height are 24.8cm and 16.5cm respectively. if one of the diagonal of the rhombus is 22cm find the length of the other diagonal

While working 7h a day, a alone can complete a piece of work in 6 days and b alone in 8 days. in what time?

Square root of 12544 by division method

30°- 60° - 90° triangle theorem and 45°-45°-90° triangle theorem ?

The smallest natural number which leaves same remainder when it divides 1496&948

Verify that (x+y) - is not equal to x-1+y-1 by taking x =5 by 9 and y=-4by 3

What is variance and standard deviation how it calculated

A guy walks into a store and steals $100 from register, comes back and buys $70 worth of merchandise, pys for it with same $100 and gets $30 cash back. how much did store lose?

Which of the six t-ratios are positive for the angles 210 degree?

Please answer this question with solution

2x-1 is a factor of 8x⁴+4x³-16x²+10x+m

How many numbers between 222 and 444 begin or end with 3?

When 20% of first number is added to second number it moves to 130% of its original value. first number is what percent of second number?

What is irrational number between 0.8 and 0.88

Base is a rectangle.its diagonals intersect at o. find x of OB=5x+1andOE=2x+4

Raining on a particular day of July . Is it a equally likely event? ?

The parking charges of a bike at chennai railway station is 50 for first hours & 10 for subsiquently hour.If for x'hours parking charge is 7,then write a linear equation in two variable which represents this information

What is the formula to find surface area of a cylinder and cube together?

Can you find a rational number whose multiplicative inverse is (-1)

By what number should we multiply -8/13 so that the product may be 24?

Sachin played 40 balls and hit 12 sixes.Probability of not hitting six on the next ball

Solutions to kalyani publishers.

For all rational numbers x and y, x*y = y*x (true or false)

For every rational number x, x*0 = x (true or false)

-(-x) = ?-(x) = ?+(x) = ?

Construct a right triangle whose hypotenuse and one side measures 10cm and 8cm then construct another triangle whose sides are 4/5times the corresponding sides of this triangle

What does agosa means

In the figure If angle OAB =40° then find angle ACB

For all rational numbers x and y, xy = yx (true or false)