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m_a_m_a [10]
4 years ago
13

If k(x) = -2x2 – 7, find k(4)

Mathematics
2 answers:
Charra [1.4K]4 years ago
7 0

Answer:

-39

Step-by-step explanation:

just olya [345]4 years ago
3 0

Answer:

-23

Step-by-step explanation:

You just plug in 4 for x. So it'd be -2(4)2-7

So, you have -8(2)-7

Then: -16-7, which gives  you -23

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Answer:

Step-by-step explanation:

The length of a rectangle is three times the width. Find the width if the perimeter is 80 cm.

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8 0
3 years ago
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Answer:

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