2 years ago

The length of a car’s skid mark in feet is given by L = 0.046s

1 answer:

6 0

100 = 0.046s^2 - 0.199s + 0.264
0 = 0.046s^2 - 0.199s - 99.736
s= 48.77691127... or -44.45082431 (reject)

The car's speed was approximately 48.8 mph.

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Read 2 more answers

✓ <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B19%20%2B%20%20%5Csqrt%7B30%20%2B%20%20%5Csqrt%7B32%20%2B%20x%20%20%7D%20%7D%

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We'll have to repeatedly square both sides of the equation, in order to get rid of the square roots. Squaring a first time yields

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Let's check the solutions: all these squaring might have created external solutions:

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