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AnnZ [28]
3 years ago
6

PLEASE HELP!! Is the answer 50 seconds???

Mathematics
1 answer:
saw5 [17]3 years ago
5 0

Answer:

Guillermo reach his lowest altitude 50 sec after diving and the lowest altitude is -125 m

Step-by-step explanation:

Let

x -----> the time in seconds

y ----> altitude in meters

we have

g(x)=\frac{1}{20}x(x-100)

g(x)=\frac{1}{20}x^{2}-5x

This is a vertical parabola open upward

The vertex is a minimum

To find out the lowest altitude, find the vertex

Complete the square

Factor the leading coefficient

g(x)=\frac{1}{20}(x^{2}-100x)

g(x)+125=\frac{1}{20}(x^{2}-100x+2,500)

Rewrite as perfect square

g(x)+125=\frac{1}{20}(x-50)^{2}

g(x)=\frac{1}{20}(x-50)^{2}-125

The vertex is the point (50,-125)

therefore

Guillermo reach his lowest altitude 50 sec after diving and the lowest altitude is -125 m (below the sea level)

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