The mean is 4.9 miles per day
Answer:
i think the answer is 18.15
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
6/18 = x/(20-x)
1/3 = x/(20-x) Multiply both sides by 20-x
(20-x)/3 = x Multiply both sides by 3
20-x = 3x Add x in both sides
20 = 4x Divide both sides by 4
5 = x
The answer is C because 3 and 4 add together to equal 7
