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Ksenya-84 [330]
3 years ago
8

The distance traveled by a car at a constant rate is proportional to the time spent driving. In the equation d = 45t, d represen

ts the distance (in miles) and t represents the time (in hours).
A. What is the constant of proportionality? ____ miles per hour

b.How far will a car travel in 3 hours?____ miles
Mathematics
1 answer:
OverLord2011 [107]3 years ago
8 0
The constant of proportionality should be 45 miles per hour, and the car should travel 135 miles in three hours.
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<h2>Answer:</h2>

The number is -2.

<h2>Step-by-step explanation:</h2><h3>Written out, our equation looks like this:</h3><h3>(-5·x)+2=12</h3>

We'll start of by taking our final result of 12 and subtracting 2, as the beginning of the statement says "two more."

<h3>12 minus 2 gives us 10.</h3>

Now, since the statement says "the product of -5," we will take this 10 and divide by -5.

<h3>10 divided by -5 gives us -2.</h3>

This means that our number, x equals -2. Of course, we must input this solution to double check our work.

<h3>(-5·<u>-2</u>)+2=12</h3><h3>10+2=12</h3><h3>12=12</h3>

<h2>Our final answer is x=-2!</h2>
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