MATHEMATICS HIGH SCHOOL

a teacher needs 70 lengths of string cut to 40 cm each. If balls of string are 10 m long how many balls will be needed

Answers

Answer 1

Answer:

The balls need for the given question is 28.

Given-

Total required string is 70.

The length of the required string is 40 cm.

The length of the ball of string is 10 m.

Convert the length of ball in centimetre from meter. We know that one meter has hundredcentimetres. Thus ten meters is,

$=10* 100$

$=1000$

Hence the length of the ball of string is 1000 cm.

Now the string is cut thus we need two lengths of string. Therefore,

$=40* 2$

$=80$

Two length of string is 80 cm.

Now this is the half times the lengths of the seventy. Thus,

$=(70)/(2) *{80}$

$=2800$

For this 2800 cm string we need 1000 cm string balls $n$ are,

$n=(2800)/(1000)$

$n=28$

Hence, the balls need for the given question is 28.

For more about the units follow the link below-

brainly.com/question/15602440

Answer 2

Answer: A meter is 100 cm. A ball of string has 10m of string, and you multiply 10m by 100cm, you get 1,000cm. Then you multiply 40cm by 2, and you get 80cm, or two lengths of string. Then you multiply 35, which is half of 70, by 80, and that is 2,800 cm.
2,800÷40cm=70
And 100cm=1m.
The teacher will therefore need 28 balls of string.

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If As income is 20% more than Bs income, how much percent is Bs income less than As income

Answers

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What is 2187 divided by 9 to the power 3?

Answers

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9×9×9=729
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3(5 − 2x) = −2(6 – 3x) − 10x

Answers

3(5-2x) = -2(6-3x)-10x
15-6x = -12+6x-10x
15-6x = -12-4x
-2x = -27
x = 27/2

I think the answer is 27/2

Find the prime factorization of 63.

Answers

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What is the inverse of f(x) = The quantity of three x plus five, over seven.?

Answers

To solve for the inverse of the function, one way to go about it is to switch or reverse the variables for both x and y. Then solve for y or f(X) again.
F(X) = 3x+5/7
Y = 3x+5/7
X = 3y+5/7
7x = 3y+5
7x-5 = 3y+5-5
7x-5 = 3y
7x-5/3 = 3y/3
7x-5/3 = y
Y = 7x-5/3
F(x) = 7x-5/3.

Find the product. (n + 8)(n - 2)

Answers

If you would like to find the product (n + 8) * (n - 2), you can do this using the following steps:

(n + 8) * (n - 2) = n * n - 2 * n + 8 * n - 8 * 2 = n^2 + 6 * n - 16

The correct result would be n^2 + 6 * n - 16.

$(a+b)(c-d)=ac+cb-bd-da\n(n+8)(n-2)=\n(n* n)+(n*8)-(8*2)-(2* n)\nn^2+8n-16-2n\n{\boxed{n^2+6n-16}$

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