4x + 2 + 3x = 5 + 2x + 8
What does x equal?

x = 11/5

Step-by-step explanation:

4x + 2 + 3x = 5 + 2x + 8

Combine like terms

7x+2 = 2x+13

Subtract 2x from each side

7x+2-2x = 2x+13-2x

5x+2 = 13

Subtract 2 from each side

5x+2-2 = 13-2

5x = 11

Divide each side by 5

5x/5 = 11/5

x = 11/5

2.2

Step-by-step explanation:

4x+2+3x=5+2x+8

combine like terms

7x+2=2x+13

Subtract 2x from each side

5x+2=13

subtract 2 from each side

5x=11

Divide each by five

x=2.2

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk