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3 years ago

A piece of string is 3-5 m long. Joe cuts three pieces from it,

1 answer:

8 0

Note: It seems you mean a piece of string is 3.5 long. So, I am assuming that a piece of string is 3.5 cm long.

Answer:

140 cm of the original piece is left after Joe cuts three pieces.

Step-by-step explanation:

Given the piece of string

3.5m

As we know that

3.5m = 350 cm

so the length of a piece of string = 350 cm

As joe cuts three pieces from it, and each 70 cm long.

so the total length of three pieces which were

cut by joe = 70cm + 70cm + 70cm = 210 cm

So, subtracting the total length of the three pieces that were cut from the total length of the string:

350 cm - 210 cm = 140 cm

Therefore, 140 cm of the original piece is left after Joe cuts three pieces from it.

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Answer:

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3 years ago

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Step-by-step explanation:

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3 years ago

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Given a triangle with perimeter 63 cm, one side of which is 21 cm, and one of the medians is perpendicular to one of its angle b

kodGreya [7K]

Answer:

The lengths of all sides of the triangle will be 21 cm, 21 cm, and 21 cm

Step-by-step explanation:

Given that the perimeter of the triangle = 63 cm

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3 years ago

Simplify cos^2 A/1+sin A

Stels [109]

Answer:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}=1-\sin(A)$

Step-by-step explanation:

We want to simplify:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}$

Recall the Pythagorean Identity:

$\sin^2(A)+\cos^2(A)=1$

So:

$\cos^2(A)=1-\sin^2(A)$

Substitute:

$\displaystyle =\frac{1-\sin^2(A)}{1+\sin(A)}$

Factor. We can use the difference of two squares pattern:

$\displaystyle =\frac{\left(1-\sin(A))(1+\sin(A))}{1+\sin(A)}$

Cancel. Hence:

$\displaystyle \frac{\cos^2(A)}{1+\sin(A)}=1-\sin(A)$

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3 years ago