Answer:
2x+10
x=55
Step-by-step explanation:
Perimeter = 2(5+x) = 2x+10
SECOND QUESTION
2x+10=120
2x=110
x=55
X = the number of months the tire was used
y = the thickness of the tire tread
y = -(3/7)x + 20
Substitute x for 20 (the number of months the tire was used) and solve for y.
The next question: Substitute x for 49 (the number of months the tire was used) and solve for y.
Answer:
0.75757575757
Step-by-step explanation:
The answer to both should be 70. For 1, I’m fairly sure it’s 180 so subtract 110 to get 70. For 2, 8 equals 70 so 6 would also equal 70.