What value is added to both sides of the equation x^2-2x=10 in order to solve by completing the square?
-2
-1
1
2

1

Step-by-step explanation:

Add the square of half the x coefficient: (-2/2)^2 = 1.

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

mnkjn

step-by-step explanation: