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Damm [24]
3 years ago
16

A road is made in such a way that the center of the road is higher off the ground than the sides of the road, in order to allow

rainwater to drain. A cross-section of the road can be represented on a graph using the function f(x) = -1/200(x – 16)(x + 16), where x represents the distance from the center of the road, in feet. Rounded to the nearest tenth, what is the maximum height of the road, in feet?

Mathematics
2 answers:
svetoff [14.1K]3 years ago
9 0

Answer:

These are the answers you can choose in edgunity.

A. 0.1

B. 0.8

C. 1.3

D. 1.6

unfortunately I do not know the answer to the question though...

I think it might be C. though.

Jet001 [13]3 years ago
4 0

Remark.

The problem is a bit indistinct. Where exactly are the two edges of the road? I'm going to say that they are the x intercepts, but that may not be true. Certainly it does not have to be true at all.


Graph.

A graph has been made for you. The maximum is marked for you. It is an approximation The actual height can be more accurately found.


Height

y = (-1/200)(x - 16)(x + 16)

y = (-1/200)*(x^2 - 256)


The maximum height for this graph only is when x = 0.Other graphs require completing the square.


y = (-1/200) * (-256)

y = 1.28 exactly. I thought the graph might be rounding the answer. It is not.

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