332354 + Interview Questions in Secondary School in Math

1.	Find a quadratic polynomial whose zeros are 1 and -3 also verify the relationship
Answer» I HOPE it's HELP you PLZ MARK me as a BRAINEST

1.

Find a quadratic polynomial whose zeros are 1 and -3 also verify the relationship

Answer»

I HOPE it's HELP you

PLZ MARK me as a BRAINEST

Discussion

2.	For any two non -empty set a and b , a× b is
Answer» ANSWER: b^x Step-by-step EXPLANATION:

2.

For any two non -empty set a and b , a× b is

Answer»

ANSWER:

b^x

Step-by-step EXPLANATION:

Discussion

3.	Classify these numbers are rational or irrational pls explain also
Answer» IRRATIONAL( as it is not a perfect SQUARE) rational(it is the square of 15) pls mark as the BRAINLIEST

3.

Classify these numbers are rational or irrational pls explain also

Answer»

IRRATIONAL( as it is not a perfect SQUARE)
rational(it is the square of 15)

pls mark as the BRAINLIEST

Discussion

4.	The circles with radii 1 inch and 9 inches are tangent to each other. Find the length of their common external tangent.
Answer» Step-by-step EXPLANATION: MARK me BRAINLIEST PLEASE please lemghth =9inch simple as 10 INCH-1 inch=9 inch

4.

The circles with radii 1 inch and 9 inches are tangent to each other. Find the length of their common external tangent.

Answer»

Step-by-step EXPLANATION:

MARK me BRAINLIEST PLEASE please

lemghth =9inch

simple

as

10 INCH-1 inch=9 inch

Discussion

5.	Show that any positive odd integer is of the form 6q + 1or 6q+ 3, or 6q+5, where , q is some integer. please solve it fast it's urgent and please if u'll know then only give answer.
Answer» Answer: Step-by-step explanation: LET a be the POSITIVE odd integer which when divided by 6 gives q as quotient and R as remainder. according to Euclid's division lemma a=bq+r a=6q+r where , a=0,1,2,3,4,5 then, a=6q or a=6q+1 or a=6q+2 or a=6q+3 or a=6q+4 or a=6q+5 but here, a=6q+1 & a=6q+3 & a=6q+5 are odd.

5.

Show that any positive odd integer is of the form 6q + 1or 6q+ 3, or 6q+5, where , q is some integer. please solve it fast it's urgent and please if u'll know then only give answer.

Answer»

Answer:

Step-by-step explanation:

LET a be the POSITIVE odd integer which when divided by 6 gives q as quotient and R as remainder.

according to Euclid's division lemma

a=bq+r

a=6q+r

where , a=0,1,2,3,4,5

then,

a=6q

or

a=6q+1

or

a=6q+2

or

a=6q+3

or

a=6q+4

or

a=6q+5

but here,

a=6q+1 & a=6q+3 & a=6q+5 are odd.

Discussion

6.	Insert three rational numbers between 0.43 and 0.45. explain this question with the best explanation will be marked as the brainliest
Answer» ANSWER: Step-by-step EXPLANATION: GIVEN NUMBERS are 0.43 and 0.45. 0.43, 0.431, 0.432, 0.433........ 0.45 0.43, 0.44, 0.441, 0.442, 0.442.........0.45 (There are INFINITE numbers between both numbers)

6.

Insert three rational numbers between 0.43 and 0.45. explain this question with the best explanation will be marked as the brainliest

Answer»

ANSWER:

Step-by-step EXPLANATION:

GIVEN NUMBERS are 0.43 and 0.45.

0.43, 0.431, 0.432, 0.433........ 0.45

0.43, 0.44, 0.441, 0.442, 0.442.........0.45

(There are INFINITE numbers between both numbers)

Discussion

7.	2x +3y=7,6x+5y=11 in substitution method
Answer» 2X +3y=7 .....(1) 6x+5y=11 .....(2) We pick either of the equations and WRITE ONE variable in terms of the other. Let us consider the equation (1) 2x +3y=7 2x=7-3y $x = \frac{7 - 3y}{2} \: \: \: \: \: \: \: ...(3)$ Substitute the value of x in equation(2), we GET $6( \frac{7 - 3y}{2} ) + 5y= 11 \\ 21 - 9y + 5y= 11 \\ 21 - 4y = 11 \\ - 4y = 11 - 21 \\ - 4y = - 10 \\ y = \frac{10}{4} \\ y = \frac{5}{2} \\ \\$ Now substituting the value of y in equation (3), we get $x = \frac{7 - 3 (\frac{5}{2} )}{2} \\ x = \frac{7 - \frac{15}{2} }{2} \\ x = \frac{ \frac{14 - 15}{2} }{2} \\ x = \frac{ \frac{ - 1}{2} }{2} \\ x = \frac{ - 1}{2} \times \frac{1}{2} \\ x = \frac{ - 1}{4}$

7.

2x +3y=7,6x+5y=11 in substitution method

Answer»

2X +3y=7 .....(1)

6x+5y=11 .....(2)

We pick either of the equations and WRITE ONE variable in terms of the other. Let us consider the equation (1)

2x +3y=7

2x=7-3y

$x = \frac{7 - 3y}{2} \: \: \: \: \: \: \: ...(3)$

Substitute the value of x in equation(2), we GET

$6( \frac{7 - 3y}{2} ) + 5y= 11 \\ 21 - 9y + 5y= 11 \\ 21 - 4y = 11 \\ - 4y = 11 - 21 \\ - 4y = - 10 \\ y = \frac{10}{4} \\ y = \frac{5}{2} \\ \\$

Now substituting the value of y in equation (3), we get

$x = \frac{7 - 3 (\frac{5}{2} )}{2} \\ x = \frac{7 - \frac{15}{2} }{2} \\ x = \frac{ \frac{14 - 15}{2} }{2} \\ x = \frac{ \frac{ - 1}{2} }{2} \\ x = \frac{ - 1}{2} \times \frac{1}{2} \\ x = \frac{ - 1}{4}$

Discussion

8.	What is the power notation of ten
Answer» Answer: Step-by-step explanation: Positive powers In decimal NOTATION the NTH power of TEN is written as '1' followed by n ZEROES. It can also be written as 10n or as 1En in E notation.

8.

What is the power notation of ten

Answer»

Answer:

Step-by-step explanation:

Positive powers

In decimal NOTATION the NTH power of TEN is written as '1' followed by n ZEROES. It can also be written as 10n or as 1En in E notation.

Discussion

9.	Pls solve this question of class 9
Answer» (16)¼=(2⁴)¼=2⁴×¼=2¹=2; PLEASE MARK the ANSWER as BRAINLIEST.

Discussion

10.	Find the sums of the place value of 6 in 4641
Answer» ANSWER: 5241 is the answer of your QUESTION

10.

Find the sums of the place value of 6 in 4641

Answer»

ANSWER:

5241 is the answer of your QUESTION

Discussion

11.	K/root of 1-k^2 cotA+root of 1-k^2 secA(180
Answer» ANSWER: hajjshsbxbxbsbsnsmsmsmsmnsnsnsbsbsbsbbs Step-by-step EXPLANATION: SORY i NEED poinys

11.

K/root of 1-k^2 cotA+root of 1-k^2 secA(180

Answer»

ANSWER:

hajjshsbxbxbsbsnsmsmsmsmnsnsnsbsbsbsbbs

Step-by-step EXPLANATION:

SORY i NEED poinys

Discussion

12.	In ABC, angle ABC=90°.From any point D on AB, DE is drawn perpendicular to AC. If AD =10cm,AE=8cm and BC=18cm find DB.
Answer» ANSWER: nnendndndnndnsnsnsnsnsnbsbsbsbdbdbbdbsbdbdbdbbdbdbdbdbbs Step-by-step EXPLANATION: bbebebebebeb

12.

In ABC, angle ABC=90°.From any point D on AB, DE is drawn perpendicular to AC. If AD =10cm,AE=8cm and BC=18cm find DB.

Answer»

ANSWER:

nnendndndnndnsnsnsnsnsnbsbsbsbdbdbbdbsbdbdbdbbdbdbdbdbbs

Step-by-step EXPLANATION:

bbebebebebeb

Discussion

13.	Is y³-3y a polynomial? Prove
Answer» ANSWER: No A polynomial must have a MINIMUM of two TERMS ( ALGEBRAIC expressions) . As the given expression is having only two, it is not a polynomial.

13.

Is y³-3y a polynomial? Prove

Answer»

ANSWER:

No

A polynomial must have a MINIMUM of two TERMS ( ALGEBRAIC expressions) . As the given expression is having only two, it is not a polynomial.

Discussion

14.	Check if 20 raised to the power n can end with digit 0 for any natural number n
Answer» Step-by-step EXPLANATION: kgjjhkgxhkkkxkyyjjygjgxzjgj

14.

Check if 20 raised to the power n can end with digit 0 for any natural number n

Answer»

Step-by-step EXPLANATION:

kgjjhkgxhkkkxkyyjjygjgxzjgj

Discussion

15.	I need to knoww what is the lcm of 5,7,10
Answer» Answer: 70 is the LCM of 5,7,10.

15.

I need to knoww what is the lcm of 5,7,10

Answer»

Answer:

70 is the LCM of 5,7,10.

Discussion

16.	HHillaSum of two numbers is 1.5 Two times of the first exceeds by 5 from the threetimes of the other. Then the numbers will bebaSelect one:....a. 211...b. 200c. 30d. 249
Answer» Step-by-step EXPLANATION: jlvcxkxjxkhkkhkxkkji

16.

HHillaSum of two numbers is 1.5 Two times of the first exceeds by 5 from the threetimes of the other. Then the numbers will bebaSelect one:....a. 211...b. 200c. 30d. 249

Answer»

Step-by-step EXPLANATION:

jlvcxkxjxkhkkhkxkkji

Discussion

17.	A shopkeeper salls mangoes in two types of boxes one small and one large a large boxes contains as many as 8 small boxes plus 4 loose mangoes which gives the number of mangoes in each small box if the number of mangoes in a large box is given to be 100
Answer» ANSWER: in each SMALL BOX the no of MANGOES are 50 Step-by-step explanation: 8:4::100:x x=100*4/2 x=100/2 x=50

17.

A shopkeeper salls mangoes in two types of boxes one small and one large a large boxes contains as many as 8 small boxes plus 4 loose mangoes which gives the number of mangoes in each small box if the number of mangoes in a large box is given to be 100

Answer»

ANSWER:

in each SMALL BOX the no of MANGOES are 50

Step-by-step explanation:

8:4::100:x

x=100*4/2

x=100/2

x=50

Discussion

18.	Find a quadratic polynomial whose zeros are 1 and -3 also verify the relationship
Answer» Step-by-step explanation: alfa+BETA= -3+1 = -2= -b/a alfa×beta = -3×1= =. -3=c/a therefore polynomial comparing a= 1 b= 2 and. c= -3 = x²+2x-3 Answer verification:- x²+2x-3 x²+3x-x-3 x( x+3) - 1( x+3) (x+3) ( x-1) this gives , alfa= 1. and beta= -3 VERIFIED

18.

Find a quadratic polynomial whose zeros are 1 and -3 also verify the relationship

Answer»

Step-by-step explanation:

alfa+BETA= -3+1 = -2= -b/a

alfa×beta = -3×1= =. -3=c/a

therefore polynomial

comparing a= 1 b= 2 and. c= -3

= x²+2x-3

Answer

verification:-

x²+2x-3

x²+3x-x-3

x( x+3) - 1( x+3)

(x+3) ( x-1)

this gives , alfa= 1. and beta= -3

VERIFIED

Discussion

19.	Round these numbers to nearest 10 28 32 52 41 3948 2846 64 9959 225 1523 4923 668 776 and 603
Answer» Answer: 10-10 28-30 32-30 52-50 41-40 3948-3950 2846-2850 64-60 9959-9960 225-230 or 220 1523-1520 4923-4920 668-670 776-780 603-600

19.

Round these numbers to nearest 10 28 32 52 41 3948 2846 64 9959 225 1523 4923 668 776 and 603

Answer»

Answer:

10-10

28-30

32-30

52-50

41-40

3948-3950

2846-2850

64-60

9959-9960

225-230 or 220

1523-1520

4923-4920

668-670

776-780

603-600

Discussion

20.	Algebra 15m+17n=21 ,17m+15n=11
Answer» Step-by-step explanation: (a + B) 2 = a 2 + b 2 + 2ab (a − b) 2 = a 2 + b 2 − 2ab a 2 − b 2 = (a − b) (a + b) (x + a) (x + b) = x 2 + (a + b) x + ab (a + b + c) 2 = a 2 + b 2 + c 2 + 2ab + 2bc + 2ca (a + (−b) + (−c)) 2 = a 2 + (−b) 2 + (−c) 2 + 2A (−b) + 2 (−b) (−c) + 2a (−c) (a – b – c) 2 = a 2 + b 2 + c 2 − 2ab + 2bc − 2ca (a + b) 3 = a 3 + b 3 + 3AB(a + b) (a − b) 3 = a 3 - b 3 - 3ab(a - b) a 3 − b 3 = (a − b) (a 2 + b 2 + ab) a 3 + b 3 = (a + b) (a 2 + b 2 − ab) (a + b + c) 3 = a 3 + b 3 + c 3 + 3(a + b)(b + c)(c + a) a 3 + b 3 + c 3 − 3ABC = (a + b + c) (a 2 + b 2 + c 2 − ab − bc − ac) If (a + b + c) = 0, a 3 + b 3 + c 3 = 3abc

20.

Algebra 15m+17n=21 ,17m+15n=11

Answer»

Step-by-step explanation:

(a + B) 2 = a 2 + b 2 + 2ab

(a − b) 2 = a 2 + b 2 − 2ab

a 2 − b 2 = (a − b) (a + b)

(x + a) (x + b) = x 2 + (a + b) x + ab

(a + b + c) 2 = a 2 + b 2 + c 2 + 2ab + 2bc + 2ca

(a + (−b) + (−c)) 2 = a 2 + (−b) 2 + (−c) 2 + 2A (−b) + 2 (−b) (−c) + 2a (−c)

(a – b – c) 2 = a 2 + b 2 + c 2 − 2ab + 2bc − 2ca

(a + b) 3 = a 3 + b 3 + 3AB(a + b)

(a − b) 3 = a 3 - b 3 - 3ab(a - b)

a 3 − b 3 = (a − b) (a 2 + b 2 + ab)

a 3 + b 3 = (a + b) (a 2 + b 2 − ab)

(a + b + c) 3 = a 3 + b 3 + c 3 + 3(a + b)(b + c)(c + a)

a 3 + b 3 + c 3 − 3ABC = (a + b + c) (a 2 + b 2 + c 2 − ab − bc − ac)

If (a + b + c) = 0,

a 3 + b 3 + c 3 = 3abc

Discussion

21.	The difference between the place value of 2 and 4 in 32140 is
Answer» ANSWER: PLACE value of 4 and 2 is 40 and 2000 differencebetween the place value of 2 and 4 is 2000-40=1960

21.

The difference between the place value of 2 and 4 in 32140 is

Answer»

ANSWER:

PLACE value of 4 and 2 is 40 and 2000

differencebetween the place value of 2 and 4 is 2000-40=1960

Discussion

22.	Cost of 2 dozens banana is Rs 24/30. what is the cost of 3 bananas
Answer» ANSWER: ONE dozen = 12 bananas. then 2×12 bananas = 24/30 24 bananas = 24/30 1 BANANA = 24/34×24 = 1/30 then COST of 3 bananas = 3×1/30 = 3/30 = 1/10 *Cost of 3 bananas = Rs 0.1*. hope it helps....

22.

Cost of 2 dozens banana is Rs 24/30. what is the cost of 3 bananas

Answer»

ANSWER:

ONE dozen = 12 bananas.

then

2×12 bananas = 24/30

24 bananas = 24/30

1 BANANA = 24/34×24 = 1/30

then COST of 3 bananas = 3×1/30 = 3/30 = 1/10

Cost of 3 bananas = Rs 0.1.

hope it helps....

Discussion

23.	Can there be a triangle with its sides measuring 6cm , 3cm and 3cm ? If not why?
Answer» ANSWER: YES it is POSSIBLE. It is an ISOSCELES TRIANGLE

23.

Can there be a triangle with its sides measuring 6cm , 3cm and 3cm ? If not why?

Answer»

ANSWER:

YES it is POSSIBLE. It is an ISOSCELES TRIANGLE

Discussion

24.	Ifa+b+c=1,a²+b²+c²=2, thena³+b³+c³=?
Answer» ANSWER: hey mate here your answer Step-by-step explanation: the answer is 3 pls FOLLOW me

24.

Ifa+b+c=1,a²+b²+c²=2, thena³+b³+c³=?

Answer»

ANSWER:

hey mate here your answer

Step-by-step explanation:

the answer is 3

pls FOLLOW me

Discussion

25.	Express-32/243 into power notations
Answer» ANSWER: ${2}^{5}/ {3}^{5}$

25.

Express-32/243 into power notations

Answer»

ANSWER:

${2}^{5}/ {3}^{5}$

Discussion

26.	But what about 1?The number 1has no predecessor in natural numbers
Answer» ANSWER: ehdhdvsvss 72728282836363(2827226633738282273;3;3;3;3;3;3;3;3;;3;3;3;3;3;3;3;2;2!!2!2;3:3'3;2!2!&';3;3;33

26.

But what about 1?The number 1has no predecessor in natural numbers

Answer»

ANSWER:

ehdhdvsvss 72728282836363(2827226633738282273;3;3;3;3;3;3;3;3;;3;3;3;3;3;3;3;2;2!!2!2;3:3'3;2!2!&';3;3;33

Discussion

27.	ABC=84 IS=54 GOOD=145 START=?
Answer» ANSWER: okytiykk6df7 Step-by-step EXPLANATION: id6foyfyf6ccfuv6gihuigg ulfii

27.

ABC=84 IS=54 GOOD=145 START=?

Answer»

ANSWER:

okytiykk6df7

Step-by-step EXPLANATION:

id6foyfyf6ccfuv6gihuigg ulfii

Discussion

28.	Which of the rational number -11/28, -5/7, 9/-14 , 29/-42
Answer» ANSWER: all NUMBERS are RATIONAL NUMBER

28.

Which of the rational number -11/28, -5/7, 9/-14 , 29/-42

Answer»

ANSWER:

all NUMBERS are RATIONAL NUMBER

Discussion

29.	Find this area of this triangular prism . 4 cm , 6 cm , 8 cm and 10 cm .
Answer» ANSWER: 203.24 is the answer for the above QUESTION

29.

Find this area of this triangular prism . 4 cm , 6 cm , 8 cm and 10 cm .

Answer»

ANSWER:

203.24 is the answer for the above QUESTION

Discussion

30.	Evaluate x cube-x square-xy+x+y-1
Answer» ANSWER: x-1 Step-by-step EXPLANATION: x^3-x^2-xy+x+y+1 =x^3-x^2=x,-xu-x+y=0,+1 =x+1

30.

Evaluate x cube-x square-xy+x+y-1

Answer»

ANSWER:

x-1

Step-by-step EXPLANATION:

x^3-x^2-xy+x+y+1

=x^3-x^2=x,-xu-x+y=0,+1

=x+1

Discussion

31.	A business man had rupees 4,02,920 in his bank account . he withdrew rupees1,10,575.how much money is left in his account
Answer» Answer: After WITHDRAWAL , the BUSINESS man is LEFT with 292345 rupees. Step-by-step explanation: PLEASE mark it as brainliest.

31.

A business man had rupees 4,02,920 in his bank account . he withdrew rupees1,10,575.how much money is left in his account

Answer»

Answer:

After WITHDRAWAL , the BUSINESS man is LEFT with 292345 rupees.

Step-by-step explanation:

PLEASE mark it as brainliest.

Discussion

32.	B. Factor of x2 – 7x + 12 is_
Answer» Answer: Step-by-step EXPLANATION: x² - 7X + 12 = x² - 4X -3x + 12 = x (x - 4) - 3(x - 4) = (x-3)(x-4)

32.

B. Factor of x2 – 7x + 12 is_

Answer»

Answer:

Step-by-step EXPLANATION:

x² - 7X + 12

= x² - 4X -3x + 12

= x (x - 4) - 3(x - 4)

= (x-3)(x-4)

Discussion

33.	Use number line and add- the following integers.(-4)+ (-7)
Answer» ANSWER: (-4)+(-7)=-- -4-7 -11 please FOLLOW me I will follow BACK

33.

Use number line and add- the following integers.(-4)+ (-7)

Answer»

ANSWER:

(-4)+(-7)=--

-4-7

-11

please FOLLOW me I will follow BACK

Discussion

34.	The number of faces in the bricks is equal to ?
Answer» Answer: The NUMBER of faces in the BRICKS is EQUAL to the number of faces in cuboid i.e. 6faces Hope it HELPS you....

34.

The number of faces in the bricks is equal to ?

Answer»

Answer:

The NUMBER of faces in the BRICKS is EQUAL to the number of faces in cuboid i.e. 6faces

Hope it HELPS you....

Discussion

35.	Answer itfastttttttt
Answer» Answer: 1)Were 2)have 3)has/had 4)is 5)was 6)were 7)is 8)have 9)were (it's used when we're imagining) 10)does Step-by-step explanation: all the answers are correct.. hope it helps.. please MARK as BRAINLIEST

35.

Answer itfastttttttt

Answer»

Answer:

1)Were

2)have

3)has/had

4)is

5)was

6)were

7)is

8)have

9)were (it's used when we're imagining)

10)does

Step-by-step explanation:

all the answers are correct.. hope it helps.. please MARK as BRAINLIEST

Discussion

36.	what will be the dimensions of a rectangle whose length is twice of breath and its perimeter equal to 108 cm?
Answer» Answer: Step-by-step EXPLANATION: So,TAKE LENGTH as 2x and breath as x, 2(2x+x)=108, 4x+2x=108, 6x=108, x=108/6, x=18, So,length is 2x, 2(18), 36 cm. And breath is x, 18 cm, HOPE it helps you.

36.

what will be the dimensions of a rectangle whose length is twice of breath and its perimeter equal to 108 cm?

Answer»

Answer:

Step-by-step EXPLANATION:

So,TAKE LENGTH as 2x and breath as x,

2(2x+x)=108,

4x+2x=108,

6x=108,

x=108/6,

x=18,

So,length is 2x,

2(18),

36 cm.

And breath is x,

18 cm,

HOPE it helps you.

Discussion

37.	Al completed 6/7 of his assignment in 8 days. Continuing at this rate, how many more days will it take him to finish his assignment?
Answer» Answer: 9.1 Days Step-by-step EXPLANATION:

37.

Al completed 6/7 of his assignment in 8 days. Continuing at this rate, how many more days will it take him to finish his assignment?

Answer»

Answer:

9.1 Days

Step-by-step EXPLANATION:

Discussion

38.	What is the sum product difference and division of any two rational numbers
Answer» Step-by-step explanation: SUM is the ADDITION of all RATIONAL no. product is said when TWO rational no. is multiplied.. diferrnce is the subtraction

38.

What is the sum product difference and division of any two rational numbers

Answer»

Step-by-step explanation:

SUM is the ADDITION of all RATIONAL no.
product is said when TWO rational no. is multiplied..
diferrnce is the subtraction

Discussion

39.	Factorize3x² - x - 10
Answer» ANSWER: (x-2)(3x+5) Step-by-step explanation: 3x^2-x-10 3x^2+5x-6x-10 X(3x+5)-2(3x+5) (x-2)(3x+5)

39.

Factorize3x² - x - 10

Answer»

ANSWER:

(x-2)(3x+5)

Step-by-step explanation:

3x^2-x-10

3x^2+5x-6x-10

X(3x+5)-2(3x+5)

(x-2)(3x+5)

Discussion

40.	If x+1/x =√3 then,the value of x^30
Answer» Step-by-step EXPLANATION: x + 1/x = √3 Doing CUBE both side x³ + 1/x³ + 3(x + 1/x) = 3√3 x³ + 1/x³ + 3√3 = 3√3 x³ + 1/x³ = 0 x³ = -1/x³ x^6 = -1 x^30 = (x^6)^5 = (-1)^5 = -1

40.

If x+1/x =√3 then,the value of x^30

Answer»

Step-by-step EXPLANATION:

x + 1/x = √3

Doing CUBE both side

x³ + 1/x³ + 3(x + 1/x) = 3√3

x³ + 1/x³ + 3√3 = 3√3

x³ + 1/x³ = 0

x³ = -1/x³

x^6 = -1

x^30 = (x^6)^5

= (-1)^5 = -1

Discussion

41.	What is the area of the colored square
Answer» AREA of this FIGURE is 100 SAHI HAI area of daure is 100

41.

What is the area of the colored square

Answer»

AREA of this FIGURE is 100 SAHI HAI

area of daure is 100

Discussion

42.	Two numbers are given at 50 and 20 what are the product of their HCF and LCMplzz do it step by step .
Answer» Answer: the given number are=50&20 the PRODUCT of two numbers=product of hcf and lcm so 50*20=1000

42.

Two numbers are given at 50 and 20 what are the product of their HCF and LCMplzz do it step by step .

Answer»

Answer:

the given number are=50&20

the PRODUCT of two numbers=product of hcf and lcm
so 50*20=1000

Discussion

43.	2sin^2 (8×1/2)+4cos16sin (7×1/2)sin (8×1/2)+cos32 =?
Answer» we know that sin2A-sin2B = sin (A+B)sin(A-B)π/8 + a/2+π/8 - a/2) sin(π/8 + a/2-π/8+ a/2)sin^2[π÷8+A÷2]-sin^2[π÷8-A÷2]=sin(π/4) sin(a)=sin(=(1/ ) sina ....... plz MARK me on BRAINLIST follow me & follow itz cutie GIRL..

43.

2sin^2 (8×1/2)+4cos16sin (7×1/2)sin (8×1/2)+cos32 =?

Answer»

we know that sin2A-sin2B = sin (A+B)sin(A-B)π/8 + a/2+π/8 - a/2) sin(π/8 + a/2-π/8+ a/2)sin^2[π÷8+A÷2]-sin^2[π÷8-A÷2]=sin(π/4) sin(a)=sin(=(1/ ) sina .......

plz MARK me on BRAINLIST follow me & follow itz cutie GIRL..

Discussion

44.	A person starts from point A, moves towards the east direction and walks 20km to reach point B. Then he turns left and moves 30km to reach point C and takes a right walk 20 km to reach point D. Then he takes right and walks 50km to reach point F. Point E is the midpoint of D & F.13. What is the direction of point E with respect to point A? a) East b) West c) South west d) North east e) North west 14. What is the shortest distance between B and F? a) √(820) b) √(800) c) √(850) d) √(830) e) √(824) 15. What is the direction of F with respect to C? a) South East b) West c) South west d) North east e) North west
Answer» ANSWER: Step-by-step EXPLANATION: This is the questioof CLASS 7 MATHS

44.

A person starts from point A, moves towards the east direction and walks 20km to reach point B. Then he turns left and moves 30km to reach point C and takes a right walk 20 km to reach point D. Then he takes right and walks 50km to reach point F. Point E is the midpoint of D & F.13. What is the direction of point E with respect to point A? a) East b) West c) South west d) North east e) North west 14. What is the shortest distance between B and F? a) √(820) b) √(800) c) √(850) d) √(830) e) √(824) 15. What is the direction of F with respect to C? a) South East b) West c) South west d) North east e) North west

Answer»

ANSWER:

Step-by-step EXPLANATION:

This is the questioof CLASS 7 MATHS

Discussion

45.	2. Arrange the following in descending order:2/9, 2/3, 8/21
Answer» Answer: If we MAKE them like FRACTIONS we get 6/63 42/63 24/63 So 2/3 > 8/21 > 2/9

45.

2. Arrange the following in descending order:2/9, 2/3, 8/21

Answer»

Answer:

If we MAKE them like FRACTIONS we get 6/63 42/63 24/63

So 2/3 > 8/21 > 2/9

Discussion

46.	Do it...............
Answer» ANSWER: ${(x + 1)}^{2} = 2(x - 3) \\ = > {x}^{2} + 2 \times x \times 1 + {1}^{2} = 2x - 6 \\ = > {x}^{2} + 2x + 1 = 2x - 6 \\ = > {x}^{2} + 2x + 1 - 2x + 6 = 0 \\ = > {x}^{2} + 7 = 0 \\ = > {x}^{2} = - 7 \\ = > x = \sqrt{ - 7}$

46.

Do it...............

Answer»

ANSWER:

${(x + 1)}^{2} = 2(x - 3) \\ = > {x}^{2} + 2 \times x \times 1 + {1}^{2} = 2x - 6 \\ = > {x}^{2} + 2x + 1 = 2x - 6 \\ = > {x}^{2} + 2x + 1 - 2x + 6 = 0 \\ = > {x}^{2} + 7 = 0 \\ = > {x}^{2} = - 7 \\ = > x = \sqrt{ - 7}$

Discussion

47.	Using appropriate properties find: (i) -2/3×3/5+5/2-3/5×1/6
Answer»

Discussion

48.	Use a suitable property ofintegers to evaluate the following. State the property used. [15×9]+[15×(-11)]
Answer»

Discussion

49.	Swathi starts her job with certain monthly salary and earns a fixed increment every year. If her salary was Rs.22500 per month after 6 years of service and Rs.30000 per month after 11 years of service. Find her salary after 8 years of service (in Rs.).
Answer» Hyy Dude 25500 Step-by-step explanation: She gets increment of 1500 every year so after 8 years of service her SALARY will be 25500 . Hope it's helps you PLZ MARKED in BRAINLEST ANSWER

49.

Swathi starts her job with certain monthly salary and earns a fixed increment every year. If her salary was Rs.22500 per month after 6 years of service and Rs.30000 per month after 11 years of service. Find her salary after 8 years of service (in Rs.).

Answer»

Hyy Dude

25500

Step-by-step explanation:

She gets increment of 1500 every year so after 8 years of service her SALARY will be 25500 .

Hope it's helps you

PLZ MARKED in BRAINLEST ANSWER

Discussion

50.	A person in room number (13) recovered from Corona. He wished to say good bye to all patients. But the doctors told him if you say Good bye to the same patient twice, you will be infected by corona again! How you could draw his path to go out of the building without infection?
Answer» ANSWER: WITHOUT TOUCHING and TALKING with ANYONE

50.

A person in room number (13) recovered from Corona. He wished to say good bye to all patients. But the doctors told him if you say Good bye to the same patient twice, you will be infected by corona again! How you could draw his path to go out of the building without infection?

Answer»

ANSWER:

WITHOUT TOUCHING and TALKING with ANYONE

Discussion

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