Mutiplicative inverse of - 1 2/3

-3/5

Step-by-step explanation:

-1 2/3=(-(3+2))/3=-5/3

let x be multiplicative inverse ,then

x×-5/3=1

x=1×-3/5=-3/5

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