The length of a rectangle is twice its width. if the area of the rectangle is 200 yd2 , find its perimeter.

2 answers:

7 0

Width: x
Length: 2x
Area=x(2x)=2x^2
2x^2=200
x^2=100
x=10 or -10(reject as x>0) [width cannot be less than 0, doesnt make sense]
Perimeter
=x+x+2x+2x
=6x
=6(10)
=60 yd

castortr0y [4]3 years ago

6 0

The answer to this question is 60yd

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<h3>What is the interest rate behind a pay back?</h3>

In this situation we assume that the loan does not accumulate interests continuously in time. Hence, the interest rate for paying the loan back 75 days later is:

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Width: 4 feet

Step-by-step explanation:

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Solve the equation:

$\mathsf{\dfrac{8}{x-5}-\dfrac{9}{x-4}=\dfrac{5}{x^2-9x+20}\qquad\qquad(x\ne 5~and~x\ne 4)}$

Reduce the fractions at the left side so that they have the same denominator:

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Numerators must be equal:

$\mathsf{8x-32-(9x-45)=5}\\\\
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