Answer:
9.16 minutes per mile
At 10 miles, she is short of her intended rate
Step-by-step explanation:
2 hours means 60 * 2 = 120 minutes
Randy aims to run 13.1 miles in 120 minutes. So to get the rate [min/mi], we must divide total minutes by total miles:
120/13.1 = 9.16 minutes per mile
Moreover, she realized at 10 miles, she has taken 90 minutes. So her rate at that point [min/mi] is:
90/10 = 9 min/mi
Well, Randy is short of her intended rate
Answer: Justin worked for lifeguard for 2 hours. Justin worked as a babysitter for 8 hours.
Answer:
x =5
Step-by-step explanation:
10x-15=35
We want to get x alone
Add 15 to each side
10x-15+15=35+15
10x = 50
Divide by 10
10x/10 = 50/10
x =5
7,24,25 ~ x,72,75
so x/7 = 72/24 = 75/25 = 3
then x = 7*3 = 21
Answer:
w=width
l= 2w-4
perimeter of a rectangle = 34
34 = 2(2w-4+w)
34 = 4w-8+2w
34 = 6w-8
6w = 34+8
6w = 42
w = 42/6
width = 7
length = 2w-4
= 2(7)-4
= 14-4
= 10
