332354 + Interview Questions in Secondary School in Math

1.	The sum of the ages of a father and his son is 50 year 5 years ago the product of their ages was 175. find their present ages
Answer» Let the age of son be a Age of FATHER = 50 - a According to question, (a - 5) ( 50 - a - 5) = 175 => ( a - 5)(45 - a) = 175 => 45a + 5A - a^2 - 225 = 175 => - a^2 + 50a - 400 = 0 => a^2 - 50a - 400 = 0 => a^2 - 40a - 10a - 400 = 0 => a(a-40) - 10(a-40)= 0 => (a-10)(a-40) = 0 a = 40, 10 Son's age = 10 years Father's age = 40 years

Discussion

2.	In ΔPQR, ∠Q=90°, PQ=12, QR=5 and QS is a median. Find L(QS).
Answer» ANSWER: L(QS) = 6.5 Step-by-step explanation: In ΔPQR, ∠Q=90°, PQ=12, QR=5 PR² = PQ² + QR² (using Pythagoras THEOREM) => PR² = 12² + 5² => PR² = 169 => PR = 13 QS is median => PS = RS = 13/2 = 6.5 cm in ΔPQR Cos ∠P = PQ/PR = 12 /13 in Δ PQS QS² = PQ² + PS² - 2PQPSCos∠P => QS² = 12² + 6.5² - 2 * 12 * 6.5 * (12/13) => QS² = 12² + 6.5² - 12² => QS² = 6.5² => QS = 6.5 L(QS) = 6.5

2.

In ΔPQR, ∠Q=90°, PQ=12, QR=5 and QS is a median. Find L(QS).

Answer»

ANSWER:

L(QS) = 6.5

Step-by-step explanation:

In ΔPQR, ∠Q=90°, PQ=12, QR=5

PR² = PQ² + QR² (using Pythagoras THEOREM)

=> PR² = 12² + 5²

=> PR² = 169

=> PR = 13

QS is median

=> PS = RS = 13/2 = 6.5 cm

in ΔPQR

Cos ∠P = PQ/PR = 12 /13

in Δ PQS

QS² = PQ² + PS² - 2*PQ*PSCos∠P

=> QS² = 12² + 6.5² - 2 * 12 * 6.5 * (12/13)

=> QS² = 12² + 6.5² - 12²

=> QS² = 6.5²

=> QS = 6.5

L(QS) = 6.5

Discussion

3.	As shown in the following figure, in ΔLMN and ΔPNM, LM=PN, LN=PM. Write the test which assures the congruence of the two triangles.Write their remaining congruent parts
Answer» SSS CONGRUENCE RULE MN=NM

Discussion

4.	In figure 3.24, segAB≅segCB and segAD≅segCD. Prove that ΔABD≅ΔCBD
Answer» Sorry I don't know! !!!! do u no y I WRITTEN it....... because firstly I wrote wrong ANSWER and I THOUGHT that u will delete it i APOLOGISE from depth of HEART ....sorry

Discussion

5.	Use elucid division lemma to show that cube of any positive integer is of the form 9m 9m+1 9m +8
Answer» I ATTACHED 2 ATTACHMENTS

Discussion

6.	Divide the sum of -13/5 and 12/7 by the product of -13/7 and -1/2
Answer» ☆Hey MATE! SUM: $\frac{ - 13}{5} + \frac{12}{7} \\ \\ = > \frac{ - 91 + 60}{35} \\ \\ = > \frac{ - 31}{35}$ PRODUCT: $\frac{ - 13}{7} \times \frac{ - 1}{2} \\ \\ = > \frac{13}{14}$ DIVISION: $\frac{ - 31}{35} \div \frac{13}{14} \\ \\ = > \frac{ - 31}{35} \times \frac{14}{13} \\ \\ = > \frac{ - 62}{65}$ ☆Hope it HELPS!!

Discussion

7.	If x=2 is a root of the polynomial f(x)=2x^2-3x+7a. find the value of a.
Answer» Hey Here is your answer, F(x)=2x^2-3x+7a f(2) = 2 (2)^2 - 3 x 2 + 7a 2 x 4 - 6 + 7a = 0 8 - 6 + 7a = 0 2 + 7a = 0 7a = -2 a = -2/7 Hope it helps you!

Discussion

8.	4.96 bar on 96 in p/q form
Answer» LET a = 4.96 (bar on 96) -------(1) => 100a = 496.96 (bar on 96) -------(2) On subtracting equation 1 from 2, we get 99a = 492 => a = 492 / 99 => a = 164 / 33 Required number = 164 /33

Discussion

9.	Pls solve this mental maths
Answer» Here is the ANSWER .

Discussion

10.	Sin20°sin40°sin60°sin80°=3/16
Answer» Hey !!! from LHS sin20° sin40° sin60° sin80° sin60° sin20 sin40° sin80° √3/2 sin20° sin40° sin80° we KNOW a defined rule ⚜ SINX sin ( 60° - x ) sin ( 60° + x) = $\boxed{ \frac{1}{4} sin3x}$ similarly hence, LET x = 20 ° then = √3/2 × 1/4sin 320° = √3/2 ×1/4sin60° √3/2√3/2 ×1/4 = 3/16 LHS = RHS prooved ♻ _____________________________ Hope it HELPS you !!!! $\underline{rajukumar111}$

Discussion

11.	Please answer to my question please please...
Answer» HELLO Friend.... _______________________' _______________________ The answer of u r QUESTION is.... Is in the PIC.... _______________________ _______________________ THANK you....⭐️⭐️⭐️⭐️

Discussion

12.	Abscissa of a point on y axis is
Answer» The ABSCISSA of a POINT on y AXIS is zero. hope it will HELP you

Discussion

13.	A tower stands vertically on the ground. from a point on a ground, which is 15 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 60°. find the height of tower
Answer» ................... .........

Discussion

14.	A tap is situated 5m above from ground level water drops is falling regular time interval drops are falling in a such way that when first drop toches the ground 3rd drop just leave the tap at that time what is the height of 2nd drop from the tap
Answer» Hey friend here is UR solution.. ________________________ initial velocity of each drops=0m/s HENCE at height of 5 m it takes a TIME ' t' Hence ½gt² = 5 or 10t²=10 or t²=10/10 or t=1 since first drop toches the ground when 3RD drop just leave time interval between consecutive drops = ½sec hence distance traveled by 2nd drop from tap =½10*(½)² = 10/8 = 1.25 meter from tap... Hence when third drop just to left the second drop _____________________ HOPE this will help you...

Discussion

15.	Train travels at speed of 60km/hr for 0.52 hr,at 30km/hr for next 0.24hr and 70km/hr for next 0.71 hr. Find the av.speed
Answer» A train travels 60 km/hr for 0.52 hour, 30 km/hr for NEXT 0.24 hr and then 70 km/hr for next 0.71hr what is the AVERAGE speed for the trip? : Find the total distance of the trip; (dist = speed * time) d = (60.52) + (30.24) + (70*.71) d = 31.2 + 7.2 + 49.7 d = 88.1 km : Find the total time for the trip t = .52 + .24 + .71 t = 1.47 hrs : Find the av speed (a = d/t) a = 88.1/1.47 a = 59.932 ~ 60 km/hr av speed for the trip HOPE! it helps you and pls mark as brainlist

Discussion

16.	Height of mount everest solutions
Answer» 8,848 PLEASE FOLLOW me and MARK as BRAINLIEST

Discussion

17.	i read 2/9 of my book on friday 1/3 of it on saturday and remaining 160 pages on sunday. How many pages are there in the book
Answer» 360 pages wree there If u are SATISFIED pls MARK BRAINLIEST

Discussion

18.	Explain therom 10.1 class 10 cbseplease
Answer» HAY USER this is UR ANSWER

Discussion

19.	Subtract 3000 from 30000
Answer» -27000 it will HELP U

Discussion

20.	the area of rectangle is 460cm sq. if the lenght is 15% more than the breadth. what is the breadth of the rectangle.
Answer» X= 20 Breadth = 20 Ans. Let LENGTH = X+15x/100 Breadth = X X+15x/100X= 460 115xX=46000 X^2=46000/115 X^2=400 X= 20

Discussion

21.	What is the rational number between 1/2and3/4
Answer» Step-by-step explanation: ki YAA aha ODA HI likhi janda yaa

21.

What is the rational number between 1/2and3/4

Answer»

Step-by-step explanation:

ki YAA aha ODA HI likhi janda yaa

Discussion

22.	What is the divisiblity rule of 2
Answer» HEY MATE here's your ANSWER-- A number to be divisible by TWO has to have 0,2,4,6 or 8 as the last digit.

Discussion

23.	If 2 is a zero of the polynomial g(x)=px^2-3(p-1)x-1, then find the value of p
Answer» HIIIIII FRND........

Discussion

24.	The product of 3 root 2 and 4 root 2 and 12 root 32 is equals to
Answer» 1152√2 is the ANSWER of your QUESTION PLZ MARK as BRAINLIEST

Discussion

25.	If x+1/x=5 ,find the value of x^3+1/x^3.
Answer» CUBING on both SIDES x3+1/x3+3X1/x(x+1/x)=125 so FINALLY x3+1/x3=110

Discussion

26.	What are the factors of 25?
Answer» HEY mate ➡The FACTORS of 25 are 1,5 and 25. hope it HELPS to you.

Discussion

27.	Distribute 45 in this way that one part 7 less than three times of another part
Answer» LET one part is X and other is y 3y-x=7 3y+x=45 on solving we GET y =26/3 and x=19

Discussion

28.	Find the zeoroes of the polynomial p(x)=ax^2-(a^2+1)x+a and verify the relationship between the zeroes are coefficients
Answer» HOPE you GOT your ANSWER......

Discussion

29.	Sin 45° cos 65°+ sin 135° cos115°
Answer» 0 is the CORRECT ANSWER

Discussion

30.	Difference of an integer p and -8 is 3 find the value of p
Answer» Let P be x . p - -8 = 3 . -8 GOES to the other SIDE as +8 .like this, p = 3 +8.( CHANGE of sign

Discussion

31.	Find the HCF and LCM 510 and 92 and verify lcm ×hcm=product of two number
Answer» HEY!! HCF × LCM = Product of two NUMBERS => 510 × 92 = Product of two numbers Product of two numbers = 46,920 _____________________ Hope it will helps you

Discussion

32.	In a class test containing 15 questions, 4 marks for every correct answer and the (-2) matks are given for every incorrect answer.
Answer» PLEASE let me know what is the thing you have to find. I will GIVE you the answer if you reedit the question PROPERLY in the comments section. please no one collapse this answer. please please mark as brainliest.

Discussion

33.	Write each of the following as an equation in two variable: (I) 2x=-3
Answer» *HELLO Mate!* *_________________________________________________* *Given Equation →* *2x = -3* *In form of 2 variables →* *2x + 0y = -3* *Because, We know that, 0 × any variable → 0* *∴ 2x + 0 = 2x* *∴ 2x + 0 = -3* *∵ Our Original equation is restored,* *∴ We didn't made any mistakes !* *____________________________________________________* *Thanks!* *Hope This HELPS!* *#Ben4Brainly*

Discussion

34.	The cost of ball pen is ₹5 less than half of the cost of fountain pen. Write this statement as a linear equation in two variables
Answer» Let the COST of fountain PEN be X and the cost of BALL pen be y. So according to QUESTION the linear equation formed will be: (x/2)-5=y =>x/2=y+5 =>x=2*(y+5) =>x-2y=10

Discussion

35.	A number consists of two digit whose sum is 8. if 18 is added to the number it's digit are reversed.Find the number
Answer» $\huge\sf{Answer}$ Given :- Sum of 2-digit number = 8 If 18 is added to the number, the digits change their places. To Find :- The Number ______________________________ Let one of the number be X And the other number be 8 - x According to the question ⇒ 10x + (8 - x) + 18 = 10(8 - x) + x ⇒ 10x + 8 - x + 18 = 80 -10x + x ⇒ 9x + 26 = 80 - 9x ⇒ 9x + 9x = 80 - 26 ⇒ 18x = 54 ⇒ x = 54/18 ⇒ x = 3 One Number = x = 3 Other number = 8 - x = 8 - 3 = 5 Hence, the number is 35. #BAL #AnswerWithQuality

35.

A number consists of two digit whose sum is 8. if 18 is added to the number it's digit are reversed.Find the number

Answer»

$\huge\sf{Answer}$

Given :-

Sum of 2-digit number = 8

If 18 is added to the number, the digits change their places.

To Find :-

The Number

______________________________

Let one of the number be X

And the other number be 8 - x

According to the question

⇒ 10x + (8 - x) + 18 = 10(8 - x) + x

⇒ 10x + 8 - x + 18 = 80 -10x + x

⇒ 9x + 26 = 80 - 9x

⇒ 9x + 9x = 80 - 26

⇒ 18x = 54

⇒ x = 54/18

⇒ x = 3

One Number = x = 3

Other number = 8 - x = 8 - 3 = 5

Hence, the number is 35.

#BAL

#AnswerWithQuality

Discussion

36.	Prove the root of 5-root of 3 is not a rational number
Answer» HEY!! . . . . ☆Hope it will HELPS you ☆

Discussion

37.	A(1,1,1) B(-2,4,3) C(-1,5,5) D(2,2,6) are four find vector and magnitude 4 units perpendicular to AB &CD
Answer» i CANT UNDERSTAND what U have WRITTEN.

Discussion

38.	Write a pair of irrational number whose difference difference is irrational
Answer» The PAIR is 2.03003..., 0.03003..... if you LIKE my ANSWER than PLEASE FOLLOW me

Discussion

39.	At Amritsar, the temperature was - 6 Celsius on Monday and then it dropped by 4 celsius is on Tuesday on wednessday ,it rose by 3 Celsius. Again on Thursday it was by a 1 Celsius.find the temperature on Tuesday Wednesday and Thursday
Answer» TUESDAY and WEDNESDAY is 7 celisus and thusday is 8 celce us

Discussion

40.	Can anyone explain in detail about postulates and axioms
Answer» POSTULATES: Mathematical assumptions that are specific to GEOMETRY alone are called POSTULATES. Euclid wrote down 5 postulates. These can help us understand the definition of postulates better. Postulate 1: A straight line may be drawn from any one point to any other point. Postulate 2: A terminated line can be produced indefinitely. Postulate 3: A circle can be drawn with any centre and any radius. Postulate 4: All right angles are equal to one another. Postulate 5: If a straight line falling on 2 straight lines makes the interior angles on the same side of it taken TOGETHER less than 2 right angles,then the 2 straight lines,if produced indefinitely,MEET on the sides which the sum of the angles is less than 2 right angles. From this we can see that they are true for geometry part alone. AXIOMS: Common notations(AXIOMS) are assumptions used throughout matemathics and are not specifically linked to GEOMETRY alone. A few of Euclid's axioms are: 1.Things which are equal to the same thing are equal to one another. 2.If equals are added to equals,the wholes are equals. 3.If equals are subtracted from equals,the remainders are equal. 4.The whole is greater than the part. 5.Things which are DOUBLE of the same things are equal to one another. We can observe that these can be proven true when used in any part of mathematics.

Discussion

41.	Using divisibility tests, determine which of the following are divisible by 4; by 8:(a) 572.also show the method
Answer» 572 is divisible by 4 we get to KNOW that by LOOKING at the last 2 digits 572÷4=143 it goes by 8 if the last 3 digits go by 8 but here they dont so.... THERE YOU GO Hope this helps you!!

Discussion

42.	55555= what times 5
Answer» HEY mate your answer is 3125 plz MARK BRAINLIEST

Discussion

43.	What must be added to -175 to get -95? Please show working also.
Answer» -175+x= -95 -175+95=x x=-80

Discussion

44.	If x-2 and x-1/2 are the factor of PX+ 5x+r then show p=r
Answer» SINCE X-2=0 ;x=2 f(x)=P×2+5×2+r 0=2P+r+10 2P+r=-10 since x-1/2=0 x=1/2 f(x)=1/2P+5×1/2+r 0=1/2P+5/2+r P+2r=-5/2 on solving both equations we get sorry the SECOND equation is P+2r=-5 we get r=0 and p=-5

Discussion

45.	If ax^2+bx+c and bx^2+ax+c have a common factor x+1 then show that c=0 and a=b.
Answer» HOPE it HELPS you my FRND ☺☺

Discussion

46.	The temperature of the fridge compartment of a refrigerator is set at 8 degree Celsius the freezer compartment is set at 10 degree Celsius what is the difference between these temperature settings
Answer» 10 ..... becase HEAT GAI THAND agai

Discussion

47.	If m=b^x=b^y and (m^yn^x)=b^2 the value of xy is given by
Answer» COMPLETE the OUESTION DEAR

Discussion

48.	Represent ✓17 on number line
Answer» HEY your answer plz MARK the brainliest plz FOLLOW me dfgh ☺️☺️☺️

Discussion

49.	If x+1/x=11 find the value of x^2+1/x2
Answer» HI Friend !!! Here is ur answer !!! X+1/x = 11 (x+1/x)² = 11² x²+1/x² + 2(x)(1/x) = 121 x²+1/x² +2 = 121 x²+1/x² = 121-2 x²+1/x² = 119 Hope it HELPS u :-)

Discussion

50.	How 2+2=5??????????????
Answer» HEY DEAR UR ANSWER in ATTACHMENT

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The sum of the ages of a father and his son is 50 year 5 years ago the product of their ages was 175. find their present ages

In ΔPQR, ∠Q=90°, PQ=12, QR=5 and QS is a median. Find L(QS).

As shown in the following figure, in ΔLMN and ΔPNM, LM=PN, LN=PM. Write the test which assures the congruence of the two triangles.Write their remaining congruent parts

In figure 3.24, segAB≅segCB and segAD≅segCD. Prove that ΔABD≅ΔCBD

Use elucid division lemma to show that cube of any positive integer is of the form 9m 9m+1 9m +8

Divide the sum of -13/5 and 12/7 by the product of -13/7 and -1/2

If x=2 is a root of the polynomial f(x)=2x^2-3x+7a. find the value of a.

4.96 bar on 96 in p/q form

Pls solve this mental maths

Sin20°sin40°sin60°sin80°=3/16

Please answer to my question please please...

Abscissa of a point on y axis is

A tower stands vertically on the ground. from a point on a ground, which is 15 m away from the foot of the tower, the angle of elevation of the top of the tower is found to be 60°. find the height of tower

A tap is situated 5m above from ground level water drops is falling regular time interval drops are falling in a such way that when first drop toches the ground 3rd drop just leave the tap at that time what is the height of 2nd drop from the tap

Train travels at speed of 60km/hr for 0.52 hr,at 30km/hr for next 0.24hr and 70km/hr for next 0.71 hr. Find the av.speed

Height of mount everest solutions

i read 2/9 of my book on friday 1/3 of it on saturday and remaining 160 pages on sunday. How many pages are there in the book

Explain therom 10.1 class 10 cbseplease

Subtract 3000 from 30000

the area of rectangle is 460cm sq. if the lenght is 15% more than the breadth. what is the breadth of the rectangle.

What is the rational number between 1/2and3/4

What is the divisiblity rule of 2

If 2 is a zero of the polynomial g(x)=px^2-3(p-1)x-1, then find the value of p

The product of 3 root 2 and 4 root 2 and 12 root 32 is equals to

If x+1/x=5 ,find the value of x^3+1/x^3.

What are the factors of 25?

Distribute 45 in this way that one part 7 less than three times of another part

Find the zeoroes of the polynomial p(x)=ax^2-(a^2+1)x+a and verify the relationship between the zeroes are coefficients

Sin 45° cos 65°+ sin 135° cos115°

Difference of an integer p and -8 is 3 find the value of p

Find the HCF and LCM 510 and 92 and verify lcm ×hcm=product of two number

In a class test containing 15 questions, 4 marks for every correct answer and the (-2) matks are given for every incorrect answer.

Write each of the following as an equation in two variable: (I) 2x=-3

The cost of ball pen is ₹5 less than half of the cost of fountain pen. Write this statement as a linear equation in two variables

A number consists of two digit whose sum is 8. if 18 is added to the number it's digit are reversed.Find the number

Given :-

To Find :-

______________________________

Hence, the number is 35.

Prove the root of 5-root of 3 is not a rational number

A(1,1,1) B(-2,4,3) C(-1,5,5) D(2,2,6) are four find vector and magnitude 4 units perpendicular to AB &CD

Write a pair of irrational number whose difference difference is irrational

At Amritsar, the temperature was - 6 Celsius on Monday and then it dropped by 4 celsius is on Tuesday on wednessday ,it rose by 3 Celsius. Again on Thursday it was by a 1 Celsius.find the temperature on Tuesday Wednesday and Thursday

Can anyone explain in detail about postulates and axioms

Using divisibility tests, determine which of the following are divisible by 4; by 8:(a) 572.also show the method

5*5*5*5*5= what times 5

What must be added to -175 to get -95? Please show working also.

If x-2 and x-1/2 are the factor of PX+ 5x+r then show p=r

If ax^2+bx+c and bx^2+ax+c have a common factor x+1 then show that c=0 and a=b.

The temperature of the fridge compartment of a refrigerator is set at 8 degree Celsius the freezer compartment is set at 10 degree Celsius what is the difference between these temperature settings

If m=b^x=b^y and (m^yn^x)=b^2 the value of xy is given by

Represent ✓17 on number line

If x+1/x=11 find the value of x^2+1/x2

How 2+2=5??????????????

55555= what times 5