Mathematics: If a car traveling 40 miles per hour takes 50 feet to stop, then accurate to the nearest tenth, how many seconds will it take to stop?

If a car traveling 40 miles per hour takes 50 feet

jasonoliva13

01.05.2021

t = 0.85 s

Step-by-step explanation:

Given that,

The speed of a car, v = 40 mph = 17.8816 m/s

Distance, d = 50 feet = 15.24 m

Let the time be t. The formula for speed is given by distance divided by time. So,

$v=\dfrac{d}{t}\\\\t=\dfrac{d}{v}\\\\t=\dfrac{15.24 }{17.8816 }\\\\t=0.85\ s$

So, the required time is 0.85 s.

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justinamber89

14.01.2023

You subtract 3x-9x=-6x
then you add 9+16=25
last you put the two together to get 25-6x so the answer is C

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