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D. Three sixteenths

Hope this helps!

D. Three-sixteenths

Step-by-step explanation:

So the whole cake is 1/1.

She gives half of it to her mom so now she has 1/2.

She eats 1/4 of the remaining cake. 1/4 of 1/2 is 1/8. 1/2=4/8. Now she has 3/8.

She cuts the rest in half. 3/8 = 6/16. Half of 6/16 is 3/16

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

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a