Last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail?

a. x + y = 90

b. 5x – 10y = 90

c. 90 – 10y = 5x

d. 90 + 10y = 5x

It's the 3rd equation (which is in a disguised form)...we have

90 - 10y = 5x     add 10y to both sides

90 = 5x + 10y

This says that the nmber of tmes she hiked the 5 mile trail (x) plus the number of times she hiked the 10 mile trail (y) = 90 miles

he has now walked a total of what?

if i know what this is maybe i can

step-by-step explanation:

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation: