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artcher [175]
3 years ago
11

Find the focus of the parabola. y2 = –16x

Mathematics
1 answer:
Anton [14]3 years ago
3 0
Answer is (-4,0).........
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Answer:

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Step-by-step explanation:

t = 2\pi \sqrt{\frac{l}{32} }

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12.56 = 6.28 \sqrt{ \frac{l}{32} }

Divide both sides by 6.28

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Square both sides.

4 =  \frac{l}{32}

Multiply both sides by 32

l = 4 \times 32 \\ l = 128 \: feets

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