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Maru [420]
3 years ago
8

Just want to double check our answer.

Mathematics
1 answer:
bearhunter [10]3 years ago
3 0

0 divided by 2 is 0.

You can use the multiplicative identity property: the product of any number and zero is still zero.

Hope this helped :)

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The area of a rectangle is 27 m”, and the length of the rectangle is 3 m less than twice the width. Find the dimensions of the r
elena-s [515]

Answer:

L = 6 --- Length

W = 4.5 --- Width

Step-by-step explanation:

Given

Let: L = Length; W = Width

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L = 2W- 3m

Required

Find the dimensions of the rectangle

Area (A) is calculated as:

A  = L * W

This gives:

27 = (2W - 3) * W

Open bracket

27 = 2W^2 - 3W

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2W^2 - 3W - 27 = 0

Expand

2W^2 + 6W - 9W - 27 = 0

Factorize:

2W(W + 3) - 9(W + 3) = 0

(2W - 9)(W + 3) = 0

This gives:

2W - 9 = 0\ or\ W + 3 = 0

2W = 9 \ or\ W = -3

Width can not be negative.

So:

2W = 9

W = 4.5

Recall that:

L = 2W- 3m

L = 2 * 4.5 - 3

L = 6

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