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IrinaK [193]
3 years ago
11

The distance d that a car can travel in a certain amount of time t can be found by multiplying the rate of speed r by the travel

time. If a car has already travel 4 miles, the formula for the total distance travel is d= rt + 4. Which of the following gives the value of r, in terms of d and t?
SAT
2 answers:
AleksandrR [38]3 years ago
3 0

Answer:r=\frac{d-4}{t}

If the formula of the the total distance travel is:

d=rt+4    (1)

And we want to know the value of r in terms of d and t, we have to clear r from equation (1):

d-4=rt    

r=\frac{d-4}{t}>>>>This is the value of r

nignag [31]3 years ago
3 0

Answer:

r=\dfrac{d-4}{t}

Explanation:

The formula for the total distance travel is

d=rt+4

We need to find the value of r, in terms of d and t.

Subtract 4 from both sides.

d-4=rt+4-4

d-4=rt

Divide both sides by t to find the value of r.

\dfrac{d-4}{t}=\dfrac{rt}{t}

\dfrac{d-4}{t}=r

Interchange both sides.

r=\dfrac{d-4}{t}

Therefore, the value of r, in terms of d and t is r=\dfrac{d-4}{t}.

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