Sue can run 18 miles in 2 hours and can bike 60 miles in 3 hours what percent of sue average biking speed is her average running
2 answers:
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Step-by-step explanation:
15a)
Subtract both sides by 21
15b)
7 and -3 multiply to -21 and add to 4
The factors are (x+7)(x-3)
15c)
x+7 =0
x=-7
x-3=0
x=3