332354 + Interview Questions in Secondary School in Math

1.	4. Find all the zeroes of x4-2x3+9x2+6x-36 when two zeroes are root3 and root-3
Answer» Step-by-step EXPLANATION: WRITE the QUESTION again

1.

4. Find all the zeroes of x4-2x3+9x2+6x-36 when two zeroes are root3 and root-3

Answer»

Step-by-step EXPLANATION:

WRITE the QUESTION again

Discussion

2.	RS AGGARWAL KI BOOK ME SAARE CHAPTER BQSIC SE HI HONGE??
Answer» ANSWER: yes Step-by-step EXPLANATION: it WOULD be BASIC

2.

RS AGGARWAL KI BOOK ME SAARE CHAPTER BQSIC SE HI HONGE??

Answer»

ANSWER:

yes

Step-by-step EXPLANATION:

it WOULD be BASIC

Discussion

3.	15. If p(x) = x°-5x² + 4x - 3 and g(x) = x - 2, show that p(x) is not a multipleof g(x).
Answer» <P>Answer: Step-by-step EXPLANATION: g(x)=x-2 so equate gx with 0 x-2=0 x=0+2=2 x=2 Now PUT the value of x in p(x) p(2)= 2-5(2)^2+ 4(2) -3 2 - 5(4)+ 8 - 3 2-20+8-3 -18+5 -13 This the solution is not zero so we can say that g(x) is not the factor of p(x). Hope it helps..... Read more on Brainly.in - brainly.in/question/10227583#readmore

3.

15. If p(x) = x°-5x² + 4x - 3 and g(x) = x - 2, show that p(x) is not a multipleof g(x).

Answer»

<P>Answer:

Step-by-step EXPLANATION:

g(x)=x-2

so equate gx with 0

x-2=0

x=0+2=2

x=2

Now PUT the value of x in p(x)

p(2)= 2-5(2)^2+ 4(2) -3

2 - 5(4)+ 8 - 3

2-20+8-3

-18+5

-13

This the solution is not zero so we can say that g(x) is not the factor of p(x).

Hope it helps.....

Read more on Brainly.in - brainly.in/question/10227583#readmore

Discussion

4.	Give five example of things where the number counted would be 1
Answer» Answer: 15 Step-by-step EXPLANATION: NA GGGG GLYCOGEN ZURICH ZITO Y

4.

Give five example of things where the number counted would be 1

Answer»

Answer:

15

Step-by-step EXPLANATION:

NA GGGG GLYCOGEN ZURICH ZITO Y

Discussion

5.	Find X and Yplzz.. fast..
Answer» Answer: y=45' X = 120' Step-by-step explanation: any triangle have 180' add both other ANGLE 45 +60 + 30= 135 180 - 135 =45' x =45 add 30+45+45 = 120 .y=180-120= 60 y = 60'

5.

Find X and Yplzz.. fast..

Answer»

Answer:

y=45' X = 120'

Step-by-step explanation:

any triangle have 180' add both other ANGLE 45 +60 + 30= 135 180 - 135 =45' x =45 add 30+45+45 = 120 .y=180-120= 60 y = 60'

Discussion

6.	May u please solve this question or give me some clue to solve this questionthe correct answer will definitely be marked as brainliest
Answer» Step-by-step EXPLANATION: mx - NY = m^2 + N^2.....(a) x-y = 2n ......(b) solving (b); we get : x = 2n+y......(c) substituting the value of (c) in (a); we get : m(2n+y) - ny = m^2 +n^2 2mn + my - ny = m^2 + n^2 2mn + y(m- n) = m^2 + n^2 y(m-n) = m^2 +n^2- 2mn y(m-n) = ( m-n)^2 y = (m-n)^2 / m-n therefore, y = m-n.................ANSWER........... now, x= 2n+y = 2n +m -n = m+n...................ANSWER..........

6.

May u please solve this question or give me some clue to solve this questionthe correct answer will definitely be marked as brainliest

Answer»

Step-by-step EXPLANATION:

mx - NY = m^2 + N^2.....(a)

x-y = 2n ......(b)

solving (b); we get :

x = 2n+y......(c)

substituting the value of (c) in (a); we get :

m(2n+y) - ny = m^2 +n^2

2mn + my - ny = m^2 + n^2

2mn + y(m- n) = m^2 + n^2

y(m-n) = m^2 +n^2- 2mn

y(m-n) = ( m-n)^2

y = (m-n)^2 / m-n

therefore,

y = m-n.................ANSWER...........

now,

x= 2n+y

= 2n +m -n

= m+n...................ANSWER..........

Discussion

7.	X=7-4 under root 3 then find the value of x+1/x
Answer» Answer: 14 Step-by-step EXPLANATION: x=7-4√3 1/x=1/7-4√3 Rationalising 1/x=7+4√3/(7-4√3)(7+4√3) 1/x=7+4√3/49-48 1/x=7+4√3/1 1/x=7+4√3 now, x+1/x =7-4√3+7+4√3 =14

7.

X=7-4 under root 3 then find the value of x+1/x

Answer»

Answer:

14

Step-by-step EXPLANATION:

x=7-4√3

1/x=1/7-4√3

Rationalising

1/x=7+4√3/(7-4√3)(7+4√3)

1/x=7+4√3/49-48

1/x=7+4√3/1

1/x=7+4√3

now,

x+1/x =7-4√3+7+4√3

=14

Discussion

8.	Who ever is free comment so that we can discuss imp questions of math 1 a
Answer» ANSWER: YEAH I'm FREE now U can DISCUSS your question

8.

Who ever is free comment so that we can discuss imp questions of math 1 a

Answer»

ANSWER:

YEAH I'm FREE now U can DISCUSS your question

Discussion

9.	Maths question don't spam
Answer» ANSWER : The center is (1,-3) and the radius is r=5 UNITS. EXPLANATION : The GIVEN equation is: ${x}^{2} + {y}^{2} - 2x + 6y - 15 = 0$ Let rearrange to GET: ${x}^{2} - 2x + {y}^{2} + 6y=15$ We complete the square to get; ${x}^{2} - 2x + ( { - 1)}^{2} + {y}^{2} + 6y + {3}^{2} = 15+ ( { - 1)}^{2} + {3}^{2}$ $( {x - 1)}^{2} +( {y + 3)}^{2} = 15 + 1+ 9$ $( {x - 1)}^{2} +( {y + 3)}^{2} =25$ $( {x - 1)}^{2} +( {y + 3)}^{2} = {5}^{2}$ COMPARING to $( {x - h)}^{2} +( {y - h)}^{2} = {r}^{2}$ The center is (1,-3) and the radius is r=5 units.

9.

Maths question don't spam

Answer»

ANSWER :

The center is (1,-3) and the radius is r=5 UNITS.

EXPLANATION :

The GIVEN equation is:

${x}^{2} + {y}^{2} - 2x + 6y - 15 = 0$

Let rearrange to GET:

${x}^{2} - 2x + {y}^{2} + 6y=15$

We complete the square to get;

${x}^{2} - 2x + ( { - 1)}^{2} + {y}^{2} + 6y + {3}^{2} = 15+ ( { - 1)}^{2} + {3}^{2}$

$( {x - 1)}^{2} +( {y + 3)}^{2} = 15 + 1+ 9$

$( {x - 1)}^{2} +( {y + 3)}^{2} =25$

$( {x - 1)}^{2} +( {y + 3)}^{2} = {5}^{2}$

COMPARING to

$( {x - h)}^{2} +( {y - h)}^{2} = {r}^{2}$

The center is (1,-3) and the radius is r=5 units.

Discussion

10.	Arrange in ascending order:10/9,10/20,10/16,10/14,10/14,10/13
Answer» ANSWER: I DONT KNOW HAND up Step-by-step EXPLANATION: I dont know do it your own

10.

Arrange in ascending order:10/9,10/20,10/16,10/14,10/14,10/13

Answer»

ANSWER:

I DONT KNOW HAND up

Step-by-step EXPLANATION:

I dont know do it your own

Discussion

11.	What are the everyday examples of postulates and axioms?Please tell ASAP....
Answer» Answer: An axiom is a concept in logic. It is a statement which is accepted without question, and which has no proof. The axiom is be used as the premise or starting point for further reasoning or arguments,[1] usually in logic or in mathematics.[2] This means it cannot be proved within the discussion of a problem. So inside some discussion, it is thought to be true. There are MANY reasons why it has no proof. For example, The statement might be obvious. This means most people think it is clearly true. An example of an obvious axiom is the PRINCIPLE of contradiction. It says that a statement and its opposite cannot both be true at the same time and place. The statement is based on physical laws and can easily be observed. An example is Newton's laws of motion. They are easily observed in the physical world. 2) A POSTULATE (also sometimes called an axiom) is a statement that is agreed by everyone to be CORRECT. This is useful for creating proofs in mathematics and science, and postulates are OFTEN the basic truth of a much larger theory or law. Postulates themselves cannot be proven, but since they are usually obviously correct this is not a problem. Here is a good example of a postulate (given by Euclid in his studies about geometry). Two points determine (make) a line. Using this postulate and four others like it, Euclid brought a new understanding of geometry to the world, and many people think they are some of the most influential works in geometry even now. Sometimes postulates are not obviously correct, but are required for their consequences. The easiest case must be with Albert Einstein's postulate that the universe is homogenous. This type of postulate was necessary to make possible some major scientific achievements, but can also be problematic since not self-evident. There are also a few characteristics that all postulates should have. They should be obvious and easy to understand, and should not have too many words that are difficult to explain. There should not be very many of them. They should all work together without making any strange results (they should be consistent).

11.

What are the everyday examples of postulates and axioms?Please tell ASAP....

Answer»

Answer:

An axiom is a concept in logic. It is a statement which is accepted without question, and which has no proof. The axiom is be used as the premise or starting point for further reasoning or arguments,[1] usually in logic or in mathematics.[2]

This means it cannot be proved within the discussion of a problem. So inside some discussion, it is thought to be true. There are MANY reasons why it has no proof. For example,

The statement might be obvious. This means most people think it is clearly true. An example of an obvious axiom is the PRINCIPLE of contradiction. It says that a statement and its opposite cannot both be true at the same time and place.

The statement is based on physical laws and can easily be observed. An example is Newton's laws of motion. They are easily observed in the physical world.

2)

A POSTULATE (also sometimes called an axiom) is a statement that is agreed by everyone to be CORRECT. This is useful for creating proofs in mathematics and science, and postulates are OFTEN the basic truth of a much larger theory or law.

Postulates themselves cannot be proven, but since they are usually obviously correct this is not a problem. Here is a good example of a postulate (given by Euclid in his studies about geometry).

Two points determine (make) a line.

Using this postulate and four others like it, Euclid brought a new understanding of geometry to the world, and many people think they are some of the most influential works in geometry even now.

Sometimes postulates are not obviously correct, but are required for their consequences. The easiest case must be with Albert Einstein's postulate that the universe is homogenous. This type of postulate was necessary to make possible some major scientific achievements, but can also be problematic since not self-evident.

There are also a few characteristics that all postulates should have.

They should be obvious and easy to understand, and should not have too many words that are difficult to explain.

There should not be very many of them.

They should all work together without making any strange results (they should be consistent).

Discussion

12.	Simply (x^-1+y^-1)^-1
Answer» ANSWER: (1/x^-1+1/y^-1)^1 (x^1+y^1) will be the answer..

12.

Simply (x^-1+y^-1)^-1

Answer»

ANSWER:

(1/x^-1+1/y^-1)^1

(x^1+y^1) will be the answer..

Discussion

13.	What percent is 2 minutes to 24 seconds of an hour
Answer» ANSWER: HOUR =360sec 2 MIN = 120sec 144/360*100=40%

13.

What percent is 2 minutes to 24 seconds of an hour

Answer»

ANSWER:

HOUR =360sec

2 MIN = 120sec

144/360*100=40%

Discussion

14.	If 2x+3y=7;2y-x=0 then find value of x
Answer» $2x + 3y = 7 .......(<klux>1</klux>)\\ 2y - x = 0.......(<klux>2</klux>)$ from (2) $x = 2y$ PUTTING x=2y in (1) $2(2y) + 3y = 7 \\ 7y = 7 \\ y = 1$ and SINCE x=2y $x = 2(1) = 2$

Discussion

15.	The quotient of -9999 and 99
Answer» Answer -9999/99 = -100

15.

The quotient of -9999 and 99

Answer»

Answer

-9999/99

= -100

Discussion

16.	The cost of 146 chairs is rs 126290 .if all the chairs are equally priced , find the cost of a chair
Answer» HOPE it will HELP you...

Discussion

17.	Ifx_1/x=4 then valuate x2+1/x2
Answer» ANSWER: hii MATE... squaring both the sides (x+1/x)^2 = (4)^2 x^2+1/x^2+2x+1/x = 16 x^2+1/x^2+2 = 16 x^2+1/x^2 = 16-2 x^2+1/x^2 = 14 HENCE* , *the* *answer* is 14 *Hope* it *helps* u....

17.

Ifx_1/x=4 then valuate x2+1/x2

Answer»

ANSWER:

hii MATE...

squaring both the sides

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

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

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

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

x^2+1/x^2 = 14

HENCE , the answer is 14

Hope it helps u....

Discussion

18.	Solve far x 2[2x-1÷x+3]-3[x+3÷2x-1]=5
Answer» Answer: x=3 Step-by-step EXPLANATION: FIRST open the brackets 4x-2÷2x+6-3x-9÷6x+3=5 put all no. with x on one side and OTHERS on second side 4x÷2x-3x÷6x=5-2+6-9+3 2x-2x=3 x=3 Hope it help plz mark me as BRAINLIEST

18.

Solve far x 2[2x-1÷x+3]-3[x+3÷2x-1]=5

Answer»

Answer:

x=3

Step-by-step EXPLANATION:

FIRST open the brackets

4x-2÷2x+6-3x-9÷6x+3=5

put all no. with x on one side and OTHERS on second side

4x÷2x-3x÷6x=5-2+6-9+3

2x-2x=3

x=3

Hope it help

plz mark me as BRAINLIEST

Discussion

19.	If x minus under root 2 is a zero of x square + root2x + k then find the value of k
Answer» ANSWER: k=-4 Step-by-step EXPLANATION: F(X)=x2+√2x+k x-√2=0 x=√2 f(√2)=(√2)^2+√2(√2)+k f(√2)=0 √2^2+√2(√2)+k=0 2+2+k=0 k=-4

19.

If x minus under root 2 is a zero of x square + root2x + k then find the value of k

Answer»

ANSWER:

k=-4

Step-by-step EXPLANATION:

F(X)=x2+√2x+k

x-√2=0

x=√2

f(√2)=(√2)^2+√2(√2)+k

f(√2)=0

√2^2+√2(√2)+k=0

2+2+k=0

k=-4

Discussion

20.	Points a and b are 100 km apart from highway if car travels in same directions with constant speed they meet in 5hours
Answer» PLEASE COMPLETE THE QUESTION FIRST..

Discussion

21.	In a bag there are coins of 25 paise, 10 paise and 5 paise in the ratio 1:2:3. The value of the money in the bag is rs 60. No of 25 paise coin
Answer» ANSWER: There are 400 COINS of 25 PAISE

21.

In a bag there are coins of 25 paise, 10 paise and 5 paise in the ratio 1:2:3. The value of the money in the bag is rs 60. No of 25 paise coin

Answer»

ANSWER:

There are 400 COINS of 25 PAISE

Discussion

22.	How many terms of ap 30,27,24........is o
Answer» Step-by-step explanation: 10 TH term 30-3=27 27-3=24 24-3=21 21-3=18 18-3=15 15-3=12 12-3=9 9-3=6 6-3=3 3-3=0

22.

How many terms of ap 30,27,24........is o

Answer»

Step-by-step explanation:

10 TH term

30-3=27

27-3=24

24-3=21

21-3=18

18-3=15

15-3=12

12-3=9

9-3=6

6-3=3

3-3=0

Discussion

23.	The sum of two intigers is 28 if one intigers is -45 find the other
Answer» Step-by-step EXPLANATION: HOPE this will HELP you!

23.

The sum of two intigers is 28 if one intigers is -45 find the other

Answer»

Step-by-step EXPLANATION:

HOPE this will HELP you!

Discussion

24.	Logarithm Exponential problem
Answer» SOL: TAKE out COMMON LOG

24.

Logarithm Exponential problem

Answer»

SOL:

TAKE out COMMON LOG

Discussion

25.	Some Basic Concepts of CherniCalculate the number of lons number of oxygen atom and total charge in 3 gm CO,
Answer» Answer: Step-by-step explanation: FORMULA units =Mass of species/formula mass ×6.02×10 ^23 = 3/60×6.02×10^23=. 3.0×10^22(APPROX) Number of oxygen ATOMS =Number of formula units×3= 3.0×3×10^22= 9.0×10^22 Charge=3.0×10^22×3. 2×10^-19=9.6×10^3 coulomb ꧁ Mark As Brainliest Answer ꧂ And Follow Me

25.

Some Basic Concepts of CherniCalculate the number of lons number of oxygen atom and total charge in 3 gm CO,

Answer»

Answer:

Step-by-step explanation:

FORMULA units =Mass of species/formula mass ×6.02×10 ^23 = 3/60×6.02×10^23=. 3.0×10^22(APPROX) Number of oxygen ATOMS =Number of formula units×3= 3.0×3×10^22= 9.0×10^22 Charge=3.0×10^22×3. 2×10^-19=9.6×10^3 coulomb

꧁ Mark As Brainliest Answer ꧂

And Follow Me

Discussion

26.	in the given figure C is the mid point of the segment AB. P and Q are mid point of the segments AC and BC respectively then AP is equal to ?
Answer» ANSWER: Step-by-step EXPLANATION:ap=pc

26.

in the given figure C is the mid point of the segment AB. P and Q are mid point of the segments AC and BC respectively then AP is equal to ?

Answer»

ANSWER:

Step-by-step EXPLANATION:ap=pc

Discussion

27.	Ter 28 cm is melted and recast into a murderlead shots dropped into the vessel.A solid metallic sphere of diameter 28 cm is melted andcones, each of diameter 43 cm and height 3cm. Find the number offormed.ale 2019-20
Answer» WHAT DID YOU MEAN? CHECK WHETHER THE QUESTION IS CORRECT

27.

Ter 28 cm is melted and recast into a murderlead shots dropped into the vessel.A solid metallic sphere of diameter 28 cm is melted andcones, each of diameter 43 cm and height 3cm. Find the number offormed.ale 2019-20

Answer»

WHAT DID YOU MEAN?

CHECK WHETHER THE QUESTION IS CORRECT

Discussion

28.	A certain sum of money amounts to rs 7650 in 4 years and to rs 8100 in 6 years. find the sum and the rate of simple interest?
Answer» ANSWER: HOPE it will HELP you..........

28.

A certain sum of money amounts to rs 7650 in 4 years and to rs 8100 in 6 years. find the sum and the rate of simple interest?

Answer»

ANSWER:

HOPE it will HELP you..........

Discussion

29.	I am challenging you all that you can't solve this question best answer will bemarked brainliest i know no one can solve
Answer» STEP-by-step EXPLANATION: it is EASY step FOLLOW the FORMULA.

29.

I am challenging you all that you can't solve this question best answer will bemarked brainliest i know no one can solve

Answer»

STEP-by-step EXPLANATION:

it is EASY step FOLLOW the FORMULA.

Discussion

30.	2/5- 1/4+(8.1×2.7)÷0.09
Answer» Answer: 243.15 Step-by-step explanation: 2/5-1/4+(8.1×2.7)÷0.09 3/20+21.87÷0.09 3/20+243 4863/20 243.15 Hope it HELPS U!! MARK it as a BRAINLIEST

30.

2/5- 1/4+(8.1×2.7)÷0.09

Answer»

Answer:

243.15

Step-by-step explanation:

2/5-1/4+(8.1×2.7)÷0.09

3/20+21.87÷0.09

3/20+243

4863/20

243.15

Hope it HELPS U!!

MARK it as a BRAINLIEST

Discussion

31.	Write succeeding and preceding for the following.1)-0.24 2)5.678 3)√7 4)√39
Answer» ANSWER: Step-by-step explanation: 1)succeding: -0.23 PRECEDING: -0.25 2)succeding: 6.678 preceding: 4.678 3)succeding: 3.645751 preceding: 1.645751 4)succeding: 7.244998 preceding: 5.244998

31.

Write succeeding and preceding for the following.1)-0.24 2)5.678 3)√7 4)√39

Answer»

ANSWER:

Step-by-step explanation:

1)succeding: -0.23

PRECEDING: -0.25

2)succeding: 6.678

preceding: 4.678

3)succeding: 3.645751

preceding: 1.645751

4)succeding: 7.244998

preceding: 5.244998

Discussion

32.	It has 0 in ones place. it is greater than 950 and less than 970
Answer» ANSWER: The answer is 960. Hope it MAY HELP you.

32.

It has 0 in ones place. it is greater than 950 and less than 970

Answer»

ANSWER:

The answer is 960.

Hope it MAY HELP you.

Discussion

33.	Find the smallest 4-digit number which is divisible by 18, 24 and 32
Answer» ANSWER: Step-by-step EXPLANATION: HOPE it HELPS

33.

Find the smallest 4-digit number which is divisible by 18, 24 and 32

Answer»

ANSWER:

Step-by-step EXPLANATION:

HOPE it HELPS

Discussion

34.	X³ + x² + 1 is divided by x + 1.find quotient and remainder.plz answer quickly.
Answer» ANSWER: this is your answer.......

34.

X³ + x² + 1 is divided by x + 1.find quotient and remainder.plz answer quickly.

Answer»

ANSWER:

this is your answer.......

Discussion

35.	medicines are packed in boxes each waiting 5 kg 200 gram how many boxes can be loaded in a van with which cannot be carried beyond 260 kg
Answer» Answer: 50 VANS will NEEDED to CARRY this

35.

medicines are packed in boxes each waiting 5 kg 200 gram how many boxes can be loaded in a van with which cannot be carried beyond 260 kg

Answer»

Answer:

50 VANS will NEEDED to CARRY this

Discussion

36.	Plz help me figure out the answer to this Question
Answer» ANSWER: Step-by-step explanation: observe the PATTERN in the NUMERATOR and the denominator will GET cancelled as the rhs is 0

36.

Plz help me figure out the answer to this Question

Answer»

ANSWER:

Step-by-step explanation:

observe the PATTERN in the NUMERATOR and the denominator will GET cancelled as the rhs is 0

Discussion

37.	(2x + y = 8(y+3x=13
Answer» hey BUDDY, here is your detailed answer.. $2x + y = 8 \\y = 8 - 2x \\ put \: y \: in \: another \: equation \\ y + 3x = 3 \\ (8 - 2x)+ 3x = 3 \\ - 2x + 3x = 3 - 8 \\ x = - 5 \\ put \: x \: in \: y \: = 8 - 2x \\ y = 8 - 2( - 5) \\ y = 8 + 10 \\ y = 18$ I hope it HELPS you thank you have a GREAT evening

37.

(2x + y = 8(y+3x=13

Answer»

hey BUDDY,

here is your detailed answer..

$2x + y = 8 \\y = 8 - 2x \\ put \: y \: in \: another \: equation \\ y + 3x = 3 \\ (8 - 2x)+ 3x = 3 \\ - 2x + 3x = 3 - 8 \\ x = - 5 \\ put \: x \: in \: y \: = 8 - 2x \\ y = 8 - 2( - 5) \\ y = 8 + 10 \\ y = 18$

I hope it HELPS you

thank you

have a GREAT evening

Discussion

38.	A pressure of 20 Kpa acts on an area of 0.5 cmsquare. what is the normal force acting on the area??
Answer» Answer: Step-by-step explanation: We know that pressure is the normal force acting PER unit AREA. So, P = F/A so the force will be F = P x A here P = pressure = 500 Pa A = area = 0.5 m2 thus, we get F = 500 x 0.5 so force is F = 250 N

38.

A pressure of 20 Kpa acts on an area of 0.5 cmsquare. what is the normal force acting on the area??

Answer»

Answer:

Step-by-step explanation:

We know that pressure is the normal force acting PER unit AREA. So,

P = F/A

so the force will be

F = P x A

here

P = pressure = 500 Pa

A = area = 0.5 m2

thus, we get

F = 500 x 0.5

so force is

F = 250 N

Discussion

39.	Solve the equations x+2 upon 3=42
Answer» HOPE it will HELP you...

Discussion

40.	Find the volume of the cube whose edge is 15 CM, 1.2 m
Answer» VOL of 15CM EDGE CUBE is a^3= 3375cm^3 vol of 1.2 m edge cube is a^3=1.728 m^3

Discussion

41.	a disigner uses 2/3 m of cloth to stitch a dance costume. if 160 such dance costumes are needed , then how many metres of cloth will be the disigner will use
Answer» ANSWER: CLOTH NEEDED for 1 dress = 2/3m Cloth needed for 160 DRESSES = 2/3 × 160=106.67metres of cloth

41.

a disigner uses 2/3 m of cloth to stitch a dance costume. if 160 such dance costumes are needed , then how many metres of cloth will be the disigner will use

Answer»

ANSWER:

CLOTH NEEDED for 1 dress = 2/3m

Cloth needed for 160 DRESSES = 2/3 × 160=106.67metres of cloth

Discussion

42.	hydrogen sulphide reacts with lead acetate forming a black compound which reacts with H2 O2 to form another compound the colour of the compound is
Answer» Answer: Lead sulfide.........and acetic acid This is a SIMPLE acid/base reaction........... Explanation: All sulfides are INSOLUBLE; lead sulfide is particularly insoluble. black PRECIPITATE of lead sulfide would precipitate with alacrit

42.

hydrogen sulphide reacts with lead acetate forming a black compound which reacts with H2 O2 to form another compound the colour of the compound is

Answer»

Answer:

Lead sulfide.........and acetic acid

This is a SIMPLE acid/base reaction...........

Explanation:

All sulfides are INSOLUBLE; lead sulfide is particularly insoluble.

black PRECIPITATE of lead sulfide would precipitate with alacrit

Discussion

43.	2/3 of a number is 20 less than the original number
Answer» ANSWER: 2/3x=x-20 solve it and GET the answer

43.

2/3 of a number is 20 less than the original number

Answer»

ANSWER:

2/3x=x-20

solve it and GET the answer

Discussion

44.	2/5- 1/4 + (8.1×2.7)÷0.09
Answer» ANSWER: $\frac{2}{5} - \frac{1}{4} + ( \frac{8.1 \times 2.7}{0.09} ) \\ \frac{3}{20} + ( \frac{9 \times 9 \times 9 \times 3 \times 100}{10 \times 9 \times 10} ) \\ \frac{3}{20} + 243 = \frac{3 + 243 \times 20}{20} \\ \frac{4863}{20} = 243.15$

44.

2/5- 1/4 + (8.1×2.7)÷0.09

Answer»

ANSWER:

$\frac{2}{5} - \frac{1}{4} + ( \frac{8.1 \times 2.7}{0.09} ) \\ \frac{3}{20} + ( \frac{9 \times 9 \times 9 \times 3 \times 100}{10 \times 9 \times 10} ) \\ \frac{3}{20} + 243 = \frac{3 + 243 \times 20}{20} \\ \frac{4863}{20} = 243.15$

Discussion

45.	Q9) In which of the following expressions, primefactorisation has been done?case 242 28384Cb) 56=7X 2X 242(d) 542 243 89Les 7052X5X7
Answer» ANSWER: answer is: 56= 7×2×242

45.

Q9) In which of the following expressions, primefactorisation has been done?case 242 28384Cb) 56=7X 2X 242(d) 542 243 89Les 7052X5X7

Answer»

ANSWER:

answer is: 56= 7×2×242

Discussion

46.	The multiplicative inverce of -5/7
Answer» LET the MULTIPLICATIVE INVERSE of -5/7 be x then -5/7*x=1 x=-7/5 hope this HELPS

46.

The multiplicative inverce of -5/7

Answer»

LET the MULTIPLICATIVE INVERSE of -5/7 be x

then

-5/7*x=1

x=-7/5

hope this HELPS

Discussion

47.	Rs 1200 at 6% p.a. for 20/3 months
Answer» Answer: SI = 1200×6×20/100×3 SI = 480 I find the SI ,whatever you ask From NEXT time write the FULL question

47.

Rs 1200 at 6% p.a. for 20/3 months

Answer»

Answer:

SI = 1200×6×20/100×3

SI = 480

I find the SI ,whatever you ask

From NEXT time write the FULL question

Discussion

48.	Isme 0 and 1 ye value kha se aaai
Answer» ANSWER: kisme BHAI 0 and 1 value AAI

48.

Isme 0 and 1 ye value kha se aaai

Answer»

ANSWER:

kisme BHAI 0 and 1 value AAI

Discussion

49.	medicines are packed in boxes each waiting 5 kg 200 gram how many such boxes can be loaded in a van which cannot be carry beyond 260kg
Answer» 260000÷5200 =50BOXES PLEASE MARK me as BRAINLIEST

49.

medicines are packed in boxes each waiting 5 kg 200 gram how many such boxes can be loaded in a van which cannot be carry beyond 260kg

Answer»

260000÷5200 =50BOXES PLEASE MARK me as BRAINLIEST

Discussion

50.	(Root3 - root7) whole square
Answer» ANSWER: -(4+2×21^1÷2) is the SQUARE of (ROOT3 -ROOT7)

50.

(Root3 - root7) whole square

Answer»

ANSWER:

-(4+2×21^1÷2) is the SQUARE of (ROOT3 -ROOT7)

Discussion

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