Dennis has decided to double the amount of time he spends studying each night. If the data set that represents the number of minutes he had Previously spent studying each night is 30, 20, 25, 45, 10, 0, 60, which of these data sets

Therefore, the new time is 60, 40, 50, 90, 20, 0, 120.

Step-by-step explanation:

We knaow that Dennis has decided to double the amount of time he spends studying each night. If the data set that represents the number of minutes he had Previously spent studying each night is 30, 20, 25, 45, 10, 0, 60, we get

Therefore, the new time is 60, 40, 50, 90, 20, 0, 120.

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