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Semmy [17]
3 years ago
6

A construction worker dropped a hammer while building the Grand Canyon skywalk, 4000 feet above the Colorado River. Use the form

ula, t = h 4 , to find how many seconds it took for the hammer to reach the river. Round your answer to the nearest second.
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
5 0

Answer: Hammer reaches river after 15.8 seconds.

Step-by-step explanation:

Use formula: t = square root of h divided by 4. In this problem h = 4,000.

Therefore,

T = square root of 4,000 divided by 4.

T = 15.8 seconds

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In both cases you may well benefit from graphing the functions.

Do you recognize f(x) = (x + 1)^2 - 1 as a quadratic function, whose graph is that of a parabola that opens up? By comparing this to y = a(x-h)^2 + k, we see that a=1, h= -1 and k = -1. The vertex is at (h,k), which here is the point (-1, -1). This is the minimum value of the function. Thus, the range of this function is [-1, infinity).


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