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Elina [12.6K]
3 years ago
8

I need this one pls help 10 points question 4

Mathematics
1 answer:
julsineya [31]3 years ago
5 0

Answer:

-66x³ + 73x² - 4x

Step-by-step explanation:

First, expand the equation,

6x³ + 10x² - 4x + 63x² - 72x³

Now, we combine all the like terms

-66x³ + 73x² - 4x

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A rectangular swimming pool is twice as long as it is wide. A small concrete sidewalk surrounds the pool and is a constant 2 fee
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Answer:

The dimensions of the pool are:

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Length: 17.888 feet

Step-by-step explanation:

From Geometry, the area of a rectangle (A), measured in square feet, is determined by the following equations:

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Where:

w - Width, measured in feet.

l - Length, measured in feet.

If we know that w = x, l = 2\cdot x and A = 160\,ft^{2}, then we get the following second order polynomial:

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Then, the dimensions of the pool are, respectively:

w \approx 8.944\,ft and l \approx 17.888\,ft

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3 years ago
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