X^2 - 7x = -12
2x - 7x = -12
-5x = - 12
x = 12/5
or
x = 2.4
I believe 3.7 is your answer
First of all, you must find out how many miles it takes to go 4 hours and 8 hours.
112 ÷ 4 = 28 miles per hour
112 ÷ 8 = 14 miles per hour
So, going downstream will take 28 miles per hour and going in still water will take 14 miles per hour.
10/14 is the unreduced answer, and 5/7 is the reduced answer.
Answer:
B=90
A=65
Step-by-step explanation:
happy to help :)
