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Verdich [7]
3 years ago
8

5/2x + 1/2x = 12 1/2 + 7/2x find the value for x

Mathematics
1 answer:
AlekseyPX3 years ago
6 0

Step-by-step explanation:

Multiply each side by 2:

5x + x = 25 + 7x

Combine like terms:

-x = 25

Multiply both sides by -1:

x = -25

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You are making a walkway around part of a swimming pool. The dimensions of the swimming pool are 18 and 25, while the dimensions
vredina [299]

Answer:

A = 4x^2 + 86x + 450

Step-by-step explanation:

Given

Walkway = x

Length = 18

Width = 25

Required:

The area of the swimming pool

Assume the walkway will be on the 4 sides of the swimming pool.

The total length (L) of the swimming pool will be:

L = 18 + x + x

L = 18 + 2x

The total width (W) will be:

W = 25 + x + x

W = 25 + 2x

The area (A) is:

A = L * W

A = (18 + 2x) * (25 + 2x)

Expand bracket

A = 18 * 25 + 18 * 2x + 25 * 2x + 2x * 2x

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