Write the algebraic expression which represents the time it takes to go 500 miles at x+2 miles per hour.
2007-06-27 16:43:04 · 4 answers · asked by J's mom 2 in Science & Mathematics ➔ Mathematics
distance = (rate)*(time) so
time = distance/rate = 500/(x+2)
2007-06-27 16:51:54 · answer #1 · answered by Math Nerd 3 · 0⤊ 0⤋
It is easiest to learn to do this by writing in words, then filling in variables.
First, find out what the question wants (it wants time). So, you get time by taking the miles per hour and dividing it into the number of miles:
time it takes = (500 miles)/(x + 2 miles per hour)
So, now, let's put in variables, let's call time, t, and we already have all the other parts, so:
t = 500/(x+2)
Ta-da!
2007-06-27 16:51:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
s=v*t
s=500 miles, v=(x+2) miles/hour
t=s/v
t=500/(x+2) hour
2007-06-27 16:49:50 · answer #3 · answered by Arfianto M 2 · 0⤊ 0⤋
Distance = velocity * time
so,
Time = Distance/velocity
2007-06-27 16:50:36 · answer #4 · answered by msi_cord 7 · 0⤊ 0⤋