Answer:
560 ft/min
Step-by-step explanation:
Let r represent Samantha's running rate in feet per minute. Then r-230 is her walking rate. We can use the relation ...
distance = speed × time
to write an equation for the total distance Samantha went.
20r + 15(r -230) = 16150
35r - 3450 = 16150 . . . . eliminate parentheses, collect terms
35r = 19600 . . . . . . . . . . add 3450
r = 560 . . . . . . . . . . . . . . divide by the coefficient of r
Samantha ran 560 feet per minute.
The answer is 1/3 divide 12 by 12 and 36 by 12
If i simplify number 6 it would be -55/63
Try this solution (see the attachment).
Answer:
16 runners
Step-by-step explanation:
you have to add up all the runners that are under 13 minutes. Which is, 8+6+2 = 19 runners
