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Gnom [1K]
3 years ago
7

Find the area of the regular polygon shown. Round your answer to the nearest tenth if necessary.

Mathematics
1 answer:
andriy [413]3 years ago
5 0

Answer:

The answer is either B or D.

Step-by-step explanation:

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Solve the equation by completing the square.Round to the nearest hundredth if necessary. X^2–x–7=0
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NOTE:  \left(x-\dfrac{1}{2}\right)^2=x^2-x+\dfrac{1}{4}

x^2-x-7=0 \\ \\ \underbrace{x^2-x+\frac{1}{4}}_{\left(x-\frac{1}{2}\right)^2}-7\dfrac{1}{4}=0 \\ \\  \\ \left(x-\frac{1}{2}\right)^2=7\frac{1}{4}=\frac{29}{4} \qquad /\sqrt{}\\ \\  \left|x-\frac{1}{2}\right|=\dfrac{\sqrt{29}}{2} \\ \\  x_1=\dfrac{1}{2}-\dfrac{\sqrt{29}}{2} \approx  -2.19 \\ \\ x_2=\dfrac{1}{2}+\dfrac{\sqrt{29}}{2} \approx 3.19

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lisov135 [29]
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Helga [31]

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A farmer is planting 10 peach trees. He says he plans to plant five rows of trees with four trees in
Varvara68 [4.7K]

Answer:

Impossible. He needs 10 more trees.

Step-by-step explanation:

10=5*2

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