7) Solve the following system by the substitution method. Check the solution(s).

5x +y = 28
y = 2 - x

x=13/2, y=-9/2

Step-by-step explanation:

answer is : muchas/tipicas

have a nice day!

~recklesschicken

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

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? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x