332354 + Interview Questions in Secondary School in Math

1.	The reduction in the speed of an engine is directly proportional to the square of the number of bogies attached to it. The speed of the train is 100 km/hr when there are 4 bogies and 55 kmph when there are 5 bogies. What is the maximum number of bogies that can be attached to the train so that it can move?
Answer» Answer: 5 should be the max number of bogies. on 6, its speed will be reduced to zero. train wont move. to be able to move, it should have 5 bogies at max. Step-by-step EXPLANATION: reduction = K X SQUARE of number of bogies. 45 = k (5²-4²) 45= 9k k= 5 now for train to move with 6 bogies, reduction in spd should be less than 55 kmph... 55 > k (6²-5²) 55 > 5 x 11

1.

The reduction in the speed of an engine is directly proportional to the square of the number of bogies attached to it. The speed of the train is 100 km/hr when there are 4 bogies and 55 kmph when there are 5 bogies. What is the maximum number of bogies that can be attached to the train so that it can move?

Answer»

Answer:

5 should be the max number of bogies. on 6, its speed will be reduced to zero. train wont move. to be able to move, it should have 5 bogies at max.

Step-by-step EXPLANATION:

reduction = K X SQUARE of number of bogies.

45 = k (5²-4²)

45= 9k

k= 5

now for train to move with 6 bogies, reduction in spd should be less than 55 kmph...

55 > k (6²-5²)

55 > 5 x 11

Discussion

2.	1 lakh how many ten thousand
Answer» Answer: 10 TEN THOUSANDS is EQUAL to ONE LAKH

2.

1 lakh how many ten thousand

Answer»

Answer:

10 TEN THOUSANDS is EQUAL to ONE LAKH

Discussion

3.	Find the Zeroes of p(x) = y square +
Answer» ANSWER: TYPE the WHOLE QUESTION so I can answer..

3.

Find the Zeroes of p(x) = y square +

Answer»

ANSWER:

TYPE the WHOLE QUESTION so I can answer..

Discussion

4.	Find the zeroes of the quadratic polynomial f(x)=x²+8x+15
Answer» ANSWER: Hello DEAR User__________ Here is Your Answer...!! ____________________ STEP by step SOLUTION: $Given \ f(x)=x^{2}+8x+15\\\\we \ have \ to \ solve \ it.\\\\Let \ us \ do\\\\f(x)=x^{2}+8x+15\\\\f(x)=x^{2}+3x+5x+15\\\\f(x)=x(x+3)+(5(x+3)\\\\f(x)=(x+3)(x+1)\\\\x+3=0\\\\x=-3 \ or \ x+1=0\\\\x=-1$ Hope it is clear to you.

4.

Find the zeroes of the quadratic polynomial f(x)=x²+8x+15

Answer»

ANSWER:

Hello DEAR User__________

Here is Your Answer...!!

____________________

$Given \ f(x)=x^{2}+8x+15\\\\we \ have \ to \ solve \ it.\\\\Let \ us \ do\\\\f(x)=x^{2}+8x+15\\\\f(x)=x^{2}+3x+5x+15\\\\f(x)=x(x+3)+(5(x+3)\\\\f(x)=(x+3)(x+1)\\\\x+3=0\\\\x=-3 \ or \ x+1=0\\\\x=-1$

Hope it is clear to you.

Discussion

5.	The number of automobiles sold by a dealership in a day is an example of
Answer» ANSWER: ACCORDING to me.. PROFIT MADE by the DEALER..

5.

The number of automobiles sold by a dealership in a day is an example of

Answer»

ANSWER:

ACCORDING to me..

PROFIT MADE by the DEALER..

Discussion

6.	X+X+4/3=62/15 answer it please
Answer» Answer: dont know BRO Step-by-step EXPLANATION: but i can solve it it is easy

6.

X+X+4/3=62/15 answer it please

Answer»

Answer:

dont know BRO

Step-by-step EXPLANATION:

but i can solve it

it is easy

Discussion

7.	FIND 5 PRIME FACTORS
Answer» Answer: NOTE:- PLEASE WRITE THE FULL QUESTION PLS WE *HAVE* TO *FIND* *THE* *PRIME* *FACTORS* OF *WHAT* XD *FOLLOW* ME OR *MARK* MY *ANSWER* AS *BRAINLIEST* *AND* I *WILL* *FOLLOW* U *PLEASE* XD

7.

FIND 5 PRIME FACTORS

Answer»

Answer:

NOTE:- PLEASE WRITE THE FULL QUESTION PLS

WE HAVE TO FIND THE PRIME FACTORS OF WHAT

XD

FOLLOW ME

OR

MARK MY ANSWER AS BRAINLIEST AND I WILL FOLLOW U PLEASE

XD

Discussion

8.	If α and β are the zeroes of the quadratic polynomial f(x)=x^2-2x+3, then find a quadratic polynomial whose zeroes are α+2 and β+2
Answer» ANSWER: PLS MRK as brainlliest

8.

If α and β are the zeroes of the quadratic polynomial f(x)=x^2-2x+3, then find a quadratic polynomial whose zeroes are α+2 and β+2

Answer»

ANSWER:

PLS MRK as brainlliest

Discussion

9.	Write in ordinary form7×10−4
Answer» ANSWER: HEY MATE HERE IS THE ANSWER HOPE IT HELPS 7×10-4 70-4 66 SO *MATE* 66 IS *THE* *ANSWER* *HOPE* IT *HELPS U* *MARK* MY *ANSWER* AS *BRAINLIEST* *AND* I *WILL* *FOLLOW* U *PLEASE* XD

9.

Write in ordinary form7×10−4

Answer»

ANSWER:

HEY MATE HERE IS THE ANSWER HOPE IT HELPS

7×10-4

70-4

66

SO MATE 66 IS THE ANSWER

HOPE IT HELPS U

MARK MY ANSWER AS BRAINLIEST AND I WILL FOLLOW U PLEASE

XD

Discussion

10.	Solve the question and find the age of the teacher
Answer» Step-by-step EXPLANATION: $\red{hola}$ let the ages of all the student be x1,X2,x3.........x10 and that of teacher be Y so mean AGE of students :- x1+x2+x3.....+x10/10=15 (given) so x1+x2+......x10=150 ------(1) and if age of teacher is included then x1+x2+......x10+Y/11 = 17 so x1+x2+.....x10+Y = 187 150+Y = 187 ( from (1) ) Y = 37 so the age of teacher is 37

10.

Solve the question and find the age of the teacher

Answer»

Step-by-step EXPLANATION:

$\red{hola}$

let the ages of all the student be x1,X2,x3.........x10

and that of teacher be Y

so mean AGE of students :-

x1+x2+x3.....+x10/10=15 (given)

so x1+x2+......x10=150 ------(1)

and if age of teacher is included then

x1+x2+......x10+Y/11 = 17

so x1+x2+.....x10+Y = 187

150+Y = 187 ( from (1) )

Y = 37

so the age of teacher is 37

Discussion

11.	Rite in ordinary form7×10−4
Answer» Answer:66 Step-by-step EXPLANATION:According to BODMAS, multiplication COMES before subtraction. So we solve 7* 10 before subtracting 4. 7*10=70 70-4=66

11.

Rite in ordinary form7×10−4

Answer»

Answer:66

Step-by-step EXPLANATION:According to BODMAS, multiplication COMES before subtraction.

So we solve 7* 10 before subtracting 4.

7*10=70

70-4=66

Discussion

12.	If the Lcm of 12and42is10m+4then the value of'm'is
Answer» ANSWER: Step-by-step explanation: 10m+4=0 10m=-4 m=-4÷10 m=-2÷5 m=0.4

12.

If the Lcm of 12and42is10m+4then the value of'm'is

Answer»

ANSWER:

Step-by-step explanation:

10m+4=0

10m=-4

m=-4÷10

m=-2÷5

m=0.4

Discussion

13.	A spinner of radius is 8.5 cm is divided into 6 equal sectors. find the area of sectors
Answer» AREA of Sectors-227.07x6 =1362.42cm2

13.

A spinner of radius is 8.5 cm is divided into 6 equal sectors. find the area of sectors

Answer»

AREA of Sectors-227.07x6

=1362.42cm2

Discussion

14.	What should be multiplied to -3/4 to get 5/12
Answer» ANSWER: -5/9 should be MULTIPLIED Step-by-step EXPLANATION: -3/4 × X = 5/12 x = 5/12 × -4/3 x = -5/9

14.

What should be multiplied to -3/4 to get 5/12

Answer»

ANSWER:

-5/9 should be MULTIPLIED

Step-by-step EXPLANATION:

-3/4 × X = 5/12

x = 5/12 × -4/3

x = -5/9

Discussion

15.	How can we find cubes of 5a+3b
Answer» ANSWER: ?????????????????????????????????????????????

15.

How can we find cubes of 5a+3b

Answer»

ANSWER:

?????????????????????????????????????????????

Discussion

16.	Give examples to show that difference of two irrational can be rational and irrational
Answer» Answer: 1. difference of two IRRATIONAL √3-√4=√3-√4 (irrational) 2.difference of two irrational 2√4-√√4 =√4=2(RATIONAL) I hope you understand if you don't understand please comment me I will USE to understand you please FOLLOW me please

16.

Give examples to show that difference of two irrational can be rational and irrational

Answer»

Answer:

1. difference of two IRRATIONAL

√3-√4=√3-√4 (irrational)

2.difference of two irrational

2√4-√√4 =√4=2(RATIONAL)

I hope you understand if you don't understand please comment me I will USE to understand you

please FOLLOW me please

Discussion

17.	(√5+√3)/(√5-√3)+(√5-√3)/(√5+√3)
Answer» Answer: 8 Step-by-step EXPLANATION: =[(√5 +√3)/(√5-√3) × (√5+√3)/(√5+√3)] + [(√5-√3)/(√5+√3) × (√5-√3)/(√5-√3)] =[(√5+√3)²/(√5²-√3²) + (√5-√3)²/(√5²-√3²)] =[(5+3+2√15)/5-3 + (5+3-2√15)/5-3] =8+2√15/2 + 8-2√15/2 =4+√15+4-√15 =8

17.

(√5+√3)/(√5-√3)+(√5-√3)/(√5+√3)

Answer»

Answer:

8

Step-by-step EXPLANATION:

=[(√5 +√3)/(√5-√3) × (√5+√3)/(√5+√3)] + [(√5-√3)/(√5+√3) × (√5-√3)/(√5-√3)]

=[(√5+√3)²/(√5²-√3²) + (√5-√3)²/(√5²-√3²)]

=[(5+3+2√15)/5-3 + (5+3-2√15)/5-3]

=8+2√15/2 + 8-2√15/2

=4+√15+4-√15

=8

Discussion

18.	Find 5 rational numbers between 6/8and 7/8
Answer» HOLA !!! ANSWER: MULTIPLY by 10 , ➡60/80 and 70/80 The rational NUMBERS in between are the answer : 61/80,62/80,63//80....69/80. HOPE IT HELPS UHH #CHEERS

18.

Find 5 rational numbers between 6/8and 7/8

Answer»

HOLA !!!

ANSWER:

MULTIPLY by 10 ,

➡60/80 and 70/80

The rational NUMBERS in between are the answer : 61/80,62/80,63//80....69/80.

HOPE IT HELPS UHH #CHEERS

Discussion

19.	Which of the following are AP find the common difference and write three more terms 0,-4,-8,-12...
Answer» ANSWER: all TERM in ap cd= -4 -16 -20 -24

19.

Which of the following are AP find the common difference and write three more terms 0,-4,-8,-12...

Answer»

ANSWER:

all TERM in ap

cd= -4

-16 -20 -24

Discussion

20.	Please tell me fast .
Answer» Isn't your QUESTION CLEAR to SEE

Discussion

21.	If a number is greater than 1 its reciprocal is. ............. 1
Answer» 1upon that of no LIKE 1/5

21.

If a number is greater than 1 its reciprocal is. ............. 1

Answer»

1upon that of no LIKE 1/5

Discussion

22.	FIND the formula of euclid's division lemma
Answer» HOPE it HELPS you. Pls MARK this ANSWER as BRAINLIST.

Discussion

23.	(i) 3 ( 3x - 5) = 2(x+4)
Answer» Answer: 3( 3x - 5) = 2(x+4) => 9x - 15 = 2x + 8 => 9x - 2x = 8 + 15 => 7X = 23 => x = 23/7. ⚡Hope it will HELP you.⚡

23.

(i) 3 ( 3x - 5) = 2(x+4)

Answer»

Answer:

3( 3x - 5) = 2(x+4)

=> 9x - 15 = 2x + 8

=> 9x - 2x = 8 + 15

=> 7X = 23 => x = 23/7.

⚡Hope it will HELP you.⚡

Discussion

24.	Find 5 rational numbers between 6/8and7/8
Answer» ANSWER: FIVE RATIONAL NUMBERS are: 37/48 38/48 39/48 40/48 41/48

24.

Find 5 rational numbers between 6/8and7/8

Answer»

ANSWER:

FIVE RATIONAL NUMBERS are:

37/48

38/48

39/48

40/48

41/48

Discussion

25.	Tagsino + cos O = thenpoose that tanO+cotO=1
Answer» srry for my BAD HANDWRITING cuz my finger is INJURED and don't FORGET to mark it as brainliest

25.

Tagsino + cos O = thenpoose that tanO+cotO=1

Answer»

srry for my BAD HANDWRITING cuz my finger is

INJURED

and don't FORGET to mark it as brainliest

Discussion

26.	Value of x in the following questions
Answer» ANSWER: the value of X is 70 70+x+40=180 (angle on STRAIGHT line) 110+x=180 x=180-110 x=70

26.

Value of x in the following questions

Answer»

ANSWER:

the value of X is 70

70+x+40=180 (angle on STRAIGHT line)

110+x=180

x=180-110

x=70

Discussion

27.	Find k so that x^3-2x^2+3x+k has (x-1) as a factor
Answer» Answer: Assuming a typo in the equation... Should it be 6x^3-kx^2-5x+6 ? DIVIDE (X-3) into this polynomial and you GET 6x^2+(18-k)x+[3(18-k)-5] with remainder of 3[3(18-k)-5]+6 which MUST equal 0 3[3(18-k)-5]+6=0 3[54-3k-5]+6=0 3[49-3k]+6=0 3[49-3k]=-6 49-3k=-2 49+2=3k 51=3k k=51/3=17 or more simply, use Mark M.'s method: F(3) must equal 0 so replace each x with 3 to get the value of k

27.

Find k so that x^3-2x^2+3x+k has (x-1) as a factor

Answer»

Answer:

Assuming a typo in the equation...

Should it be 6x^3-kx^2-5x+6 ?

DIVIDE (X-3) into this polynomial and you GET 6x^2+(18-k)x+[3(18-k)-5] with remainder of

3[3(18-k)-5]+6 which MUST equal 0

3[3(18-k)-5]+6=0

3[54-3k-5]+6=0

3[49-3k]+6=0

3[49-3k]=-6

49-3k=-2

49+2=3k

51=3k

k=51/3=17

or more simply, use Mark M.'s method: F(3) must equal 0 so replace each x with 3 to get the value of k

Discussion

28.	Insert 4 rational no. between 5/6 and 7/12
Answer» Solution: First RATIONAL no $\frac{1}{2} \times ( \frac{5}{6} + \frac{7}{12} ) \\$ $= > \: \frac{1}{2} \times \frac{10 + 7}{12} \\$ [ *LCM of both the no is 12] $= > \: \frac{1}{2} \times \frac{17}{12 } \\$ $= > \frac{17}{<klux>24</klux>} \\$ Second rational no $\frac{1}{2} \times ( \frac{5}{6} + \frac{17}{24} ) \\$ $= > \: \frac{1}{2} \times \frac{20 + 17}{24} \\$ . [ lcm of both the no is 24] $= > \: \frac{1}{2} \times \frac{37}{24 } \\$ $= > \frac{27}{48} \\$ THIRD rational no $\frac{1}{2} \times ( \frac{17}{24} + \frac{7}{12} ) \\$ $= > \: \frac{1}{2} \times \frac{17 + 14}{24} \\$ . [ lcm of both the no is 24] $= > \: \frac{1}{2} \times \frac{31}{24} \\$ $= > \frac{31}{48} \\$ Forth rational no $\frac{1}{2} \times ( \frac{17}{24} + \frac{37}{48} ) \\$ $= > \: \frac{1}{2} \times \frac{34 + 37}{48} \\$ . [ lcm of both the no is 48*] $= > \: \frac{1}{2} \times \frac{71}{48 } \\$ $= > \frac{71}{96} \\$

28.

Insert 4 rational no. between 5/6 and 7/12

Answer»

Solution:

First RATIONAL no

$\frac{1}{2} \times ( \frac{5}{6} + \frac{7}{12} ) \\$

$= > \: \frac{1}{2} \times \frac{10 + 7}{12} \\$

[ LCM of both the no is 12]

$= > \: \frac{1}{2} \times \frac{17}{12 } \\$

$= > \frac{17}{<klux>24</klux>} \\$

Second rational no

$\frac{1}{2} \times ( \frac{5}{6} + \frac{17}{24} ) \\$

$= > \: \frac{1}{2} \times \frac{20 + 17}{24} \\$ .

[ lcm of both the no is 24]

$= > \: \frac{1}{2} \times \frac{37}{24 } \\$

$= > \frac{27}{48} \\$

THIRD rational no

$\frac{1}{2} \times ( \frac{17}{24} + \frac{7}{12} ) \\$

$= > \: \frac{1}{2} \times \frac{17 + 14}{24} \\$ .

[ lcm of both the no is 24]

$= > \: \frac{1}{2} \times \frac{31}{24} \\$

$= > \frac{31}{48} \\$

Forth rational no

$\frac{1}{2} \times ( \frac{17}{24} + \frac{37}{48} ) \\$

$= > \: \frac{1}{2} \times \frac{34 + 37}{48} \\$ .

[ lcm of both the no is 48]

$= > \: \frac{1}{2} \times \frac{71}{48 } \\$

$= > \frac{71}{96} \\$

Discussion

29.	Find a quadratic polynomial whose zeros are 2 and under root 3
Answer» ANSWER: SEE BELOW ❤ Step-by-step explanation: ACC TO QUESTION ROOTS of a QUADRATIC polynomial is GIVEN so aplha=2=say q,,,,,,, and beta=root 3=say w now x^2+(q+w)-qw x^2+ 2+root3 - 2root3 here is your ans

29.

Find a quadratic polynomial whose zeros are 2 and under root 3

Answer»

ANSWER:

SEE BELOW ❤

Step-by-step explanation:

ACC TO QUESTION

ROOTS of a QUADRATIC polynomial is GIVEN

so aplha=2=say q,,,,,,, and beta=root 3=say w

now

x^2+(q+w)-qw

x^2+ 2+root3 - 2root3

here is your ans

Discussion

30.	Express 0.57 bar in from of p by q
Answer» Answer: 57/99 Step-by-step EXPLANATION: HOPE U UNDERSTAND

30.

Express 0.57 bar in from of p by q

Answer»

Answer:

57/99

Step-by-step EXPLANATION:

HOPE U UNDERSTAND

Discussion

31.	Rohan is now half his father's age twice a year ago father was 6 times older than Rohan find the percent age of a Rohan and his father
Answer» ANSWER: ROHAN age 900 dad age 50 so rohan age is 20

31.

Rohan is now half his father's age twice a year ago father was 6 times older than Rohan find the percent age of a Rohan and his father

Answer»

ANSWER:

ROHAN age 900 dad age 50 so rohan age is 20

Discussion

32.	How to locate root 3 on the number line
Answer» Answer: Step-by-step explanation: First draw a number line having points (at least) [0,3]. If we DENOTE the point 0 as “O” and point 1 as “A” then OA will be equal to 1 unit. Then at point A draw a perpendicular of length AB=1 unit ( equal to the DISTANCE from 0 to 1 in the number line i.e. OA). And join the points O and A, so that OAB is a right angled triangle. Then by pythagoras theorem, OB^2=OA^2+AB^2 => OB=sqrt (1^2+1^2) =>OB = root2 Now, again draw a perpendicular at point B of length BC= 1 unit and join the points O and C. Again by pythagoras theorem we get OC = root 3. Then by compus taking radius =OC, draw an arc so that it cuts the number line at D. Then the distance OD will be the SQUARE root of 3. PLEASE MARK as brainliest please

32.

How to locate root 3 on the number line

Answer»

Answer:

Step-by-step explanation:

First draw a number line having points (at least) [0,3]. If we DENOTE the point 0 as “O” and point 1 as “A” then OA will be equal to 1 unit. Then at point A draw a perpendicular of length AB=1 unit ( equal to the DISTANCE from 0 to 1 in the number line i.e. OA). And join the points O and A, so that OAB is a right angled triangle. Then by pythagoras theorem,

OB^2=OA^2+AB^2

=> OB=sqrt (1^2+1^2)

=>OB = root2

Now, again draw a perpendicular at point B of length BC= 1 unit and join the points O and C. Again by pythagoras theorem we get OC = root 3. Then by compus taking radius =OC, draw an arc so that it cuts the number line at D. Then the distance OD will be the SQUARE root of 3.

PLEASE MARK as brainliest please

Discussion

33.	2Write the degree of each of the following polynomial.(i) 2x - 15(ii) 3 - x + x2 - 6x3(iv) 8x4 - 36x +- 5x? (v) x² – x5 + 3x10 +8(iii) 9(vi) 2 – 3.x2
Answer» ANSWER: 1 answer is 2x-15degree is 1 2 answer DEGREES is 1 3answer DEGREE is zero 4answer degree is 1 5answer degree is 2 6answer degrees is 1 mark as BRAINLEAST

33.

2Write the degree of each of the following polynomial.(i) 2x - 15(ii) 3 - x + x2 - 6x3(iv) 8x4 - 36x +- 5x? (v) x² – x5 + 3x10 +8(iii) 9(vi) 2 – 3.x2

Answer»

ANSWER:

1 answer is 2x-15degree is 1

2 answer DEGREES is 1

3answer DEGREE is zero

4answer degree is 1

5answer degree is 2

6answer degrees is 1

mark as BRAINLEAST

Discussion

34.	Write the degree of each of the following polynomial09)- 36x +(1) 3-x+ - 6(x-x+3x+(w2 - *
Answer» Step-by-step EXPLANATION: the DEGREE of this POLYNOMIAL is 1

34.

Write the degree of each of the following polynomial09)- 36x +(1) 3-x+ - 6(x-x+3x+(w2 - *

Answer»

Step-by-step EXPLANATION:

the DEGREE of this POLYNOMIAL is 1

Discussion

35.	Find the value of k if x = 2 k is a factor of x cube + k x square - 2 X + X + 5
Answer» Answer: PUTTING the value of x then equation become 8 I cube plus ksquare plus 2k plus 5 =0 then taking k as a common then equation become 8 I SQUARE plus k plus 7 then solving by FACTORIZATION METHOD then our answer arek=7/8, k=-1

35.

Find the value of k if x = 2 k is a factor of x cube + k x square - 2 X + X + 5

Answer»

Answer:

PUTTING the value of x then equation become 8 I cube plus ksquare plus 2k plus 5 =0 then taking k as a common then equation become 8 I SQUARE plus k plus 7 then solving by FACTORIZATION METHOD then our answer arek=7/8, k=-1

Discussion

36.	13. The product of two numbers is 5'. If one of them isthen the other is
Answer» ANSWER: GIVE one of the numbers.You have given INCOMPLETE question

36.

13. The product of two numbers is 5'. If one of them isthen the other is

Answer»

ANSWER:

GIVE one of the numbers.You have given INCOMPLETE question

Discussion

37.	-24x102 using distributive property
Answer» ANSWER: -2048 Step-by-sby boardmasstep EXPLANATION:

37.

-24x102 using distributive property

Answer»

ANSWER:

-2048

Step-by-sby boardmasstep EXPLANATION:

Discussion

38.	Find the average scores of any five teams that were playing in IPL by collecting the data for last 5 years using bar graphs.
Answer» Answer: COLLECT collect information for IPL teams and their WICKETS and make up bar GRAPH with TEAM make how many runs in how many overs

38.

Find the average scores of any five teams that were playing in IPL by collecting the data for last 5 years using bar graphs.

Answer»

Answer:

COLLECT collect information for IPL teams and their WICKETS and make up bar GRAPH with TEAM make how many runs in how many overs

Discussion

39.	FIND 5 REAL NUMBERS ?
Answer» 0,1,2,3,4,5 ,-1 is the ANSWER

Discussion

40.	An army captain divided his Batalion into team in such a manner that each team has number of soldiers equal to number team.if there are 6561 soldier in his batalion then how many soldier in steam
Answer» 81 TEAMS each CONTAINING 81soldiers

Discussion

41.	Area of an equilateral triangle is 2√3cm square.find it's perimeter
Answer» ANSWER: $\frac{1}{2} xy = 2 \sqrt{3} \\ perimeter \: = 3x \\ x = 8 \\ so \: perimeter \: is \: 24$

41.

Area of an equilateral triangle is 2√3cm square.find it's perimeter

Answer»

ANSWER:

$\frac{1}{2} xy = 2 \sqrt{3} \\ perimeter \: = 3x \\ x = 8 \\ so \: perimeter \: is \: 24$

Discussion

42.	Find 5 rational numbers
Answer» Answer: 2 / 3, 4 / 3, 6 / 7, 3, 2 / 5, 45 / 56 Step-by-step explanation: hope it will help you

42.

Find 5 rational numbers

Answer»

Answer:

2 / 3, 4 / 3, 6 / 7, 3, 2 / 5, 45 / 56

Step-by-step explanation:

hope it will help you

Discussion

43.	How many ten thousand are there in smallest 6 digit number
Answer» Answer:1 Step-by-step EXPLANATION: The SMALLEST six DIGIT NUMBER is 10,000. Therefore the number of 10,000 in 10,000=10,000/10,000=1

43.

How many ten thousand are there in smallest 6 digit number

Answer»

Answer:1

Step-by-step EXPLANATION:

The SMALLEST six DIGIT NUMBER is 10,000. Therefore the number of 10,000 in 10,000=10,000/10,000=1

Discussion

44.	Find the remainder when x = 5^5^5^5^5^5 ........24 times 5 is divided by 24
Answer» since 5'5=25=odd no. 5'25=555....=odd no. 5'oddno.=odd no. so x=5'5'5'5....24times =5555....oddtimes and since a no. 5'a can be written as 5555......a times if a is to be odd no. then. 5'a/24=25555...a-12times /24 =(1+1/24)555......a-2 times =55.....+555.......a-2 times/24 =55.....+25555...a-4times/24 =55...+(1+1/24)55...a-4times. so if we keep doing this we will keep GETTING multiplication of fives a-2,a-4,a-6,.... 5,3,FINALLY 1 times so x/24= some integer +(1+1/24)*5 x/24 =integer+5/24 hence the ans is 5. the answer MAY seem a BIT of annoying but very simple arithmatic has been used. so if you find any difficulty you may ASK.

44.

Find the remainder when x = 5^5^5^5^5^5 ........24 times 5 is divided by 24

Answer»

since 5'5=25=odd no.

5'25=5*5*5*....=odd no.

5'oddno.=odd no.

so x=5'5'5'5....24times =5*5*5*5*....oddtimes

and since a no. 5'a can be written as

5*5*5*5......a times

if a is to be odd no.

then. 5'a/24=25*5*5*5...a-12times /24

=(1+1/24)*5*5*5*......a-2 times

=5*5*.....+5*5*5.......a-2 times/24

=5*5*.....+25*5*5*5...a-4times/24

=5*5*...+(1+1/24)*5*5...a-4times.

so if we keep doing this we will keep GETTING multiplication of fives a-2,a-4,a-6,....

5,3,FINALLY 1 times

so x/24= some integer +(1+1/24)*5

x/24 =integer+5/24

hence the ans is 5.

the answer MAY seem a BIT of annoying but very simple arithmatic has been used. so if you find any difficulty you may ASK.

Discussion

45.	Sin square 30 + cosec square 45 - sec square 30 whole divided by cot square 60 - cos square 45 + tan square 30
Answer» ANSWER EXPLANATION STEP by step

45.

Sin square 30 + cosec square 45 - sec square 30 whole divided by cot square 60 - cos square 45 + tan square 30

Answer»

ANSWER

EXPLANATION STEP by step

Discussion

46.	Verify the property x ×[ y+z]= x × y+ x × z when = -12/5 , y=-15/4 , z= 8/3
Answer» ANSWER: PLEASE FIND the ATTACHED IMAGE.

46.

Verify the property x ×[ y+z]= x × y+ x × z when = -12/5 , y=-15/4 , z= 8/3

Answer»

ANSWER:

PLEASE FIND the ATTACHED IMAGE.

Discussion

47.	A rhombus in which all angles are right angles is called a
Answer» Answer: SQUARE because rhombus has all 4 sides equal. square has also all 4 sides equal. THEREFORE it is a rhombus. All angles of square measure 90°. HENCE satisfied.

47.

A rhombus in which all angles are right angles is called a

Answer»

Answer:

SQUARE because

rhombus has all 4 sides equal.

square has also all 4 sides equal. THEREFORE it is a rhombus.

All angles of square measure 90°.

HENCE satisfied.

Discussion

48.	7.1 x 10 to the power of minus 2 as an ordinary number
Answer» Step-by-step explanation: 7.110 to the POWER - 2 7.11/100 0.071

48.

7.1 x 10 to the power of minus 2 as an ordinary number

Answer»

Step-by-step explanation:

7.1*10 to the POWER - 2

7.1*1/100

0.071

Discussion

49.	Rahul spent 2/5th of his money on buying a shirt. He spent 4/9th of his remaining money on a belt. What fraction of his money was left?
Answer» the TOTAL MONEY he has LEFT is 1 by 3

49.

Rahul spent 2/5th of his money on buying a shirt. He spent 4/9th of his remaining money on a belt. What fraction of his money was left?

Answer»

the TOTAL MONEY he has LEFT is 1 by 3

Discussion

50.	[(16) ^1/2]^1/2+8^1/3+(625) ^1/2
Answer» Answer: 29 Step-by-step explanation: 16 = 2^4 8 = 2^3 625 = 5^4 =>> [(2^4)^1/2]^1/2 + (2^3)^1/3 + (5^4)^1/2 =>> (2^4)^1/4 + 2 + 5^2 =>> 2 + 2 + 25 =>> 29

50.

[(16) ^1/2]^1/2+8^1/3+(625) ^1/2

Answer»

Answer:

29

Step-by-step explanation:

16 = 2^4

8 = 2^3

625 = 5^4

=>> [(2^4)^1/2]^1/2 + (2^3)^1/3 + (5^4)^1/2

=>> (2^4)^1/4 + 2 + 5^2

=>> 2 + 2 + 25

=>> 29

Discussion

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