Question

Create an expression to find the time for the given distance and rate, and find the value of the expression.

d=315 kilometers;r=35 kilometers/hour

The time is hours.

Answer 1

@RainbowBrony555

Answer 2

@Photon336

Answer 3

According to the given in your problem, how can rate be found?

Answer 4

What is rate a measure of?

Answer 5

Don't know if you still need help but here are the steps
"r" indicates rate and "d" indicates distance in that problem
You know this to be true because
d= some # with kilometers as units (315 KILOMETERS)
r= some # of kilometers per hour (35 KILOMETERS PER HOUR = 35 KM/HR)

Then you know that "r" or rate is a measure of distance over time, as indicated by KILOMETER (distance)/HOUR (time)
Using that you can set up expression to find rate
\[rate =\frac{ distance \left(" d" \right) }{ time \left( "t" \right) }\]

But since you're trying to find time "t" you need to re-arrange the expression to get "t" alone

\[t =d \div t\]
Then you can plug in what you know



And whenever dividing fractions, you need to flip numerator and denominator of that fraction and multiply it


Then you can cross cancel out the km units and you'll be left with some number with "hr" as units