Travis writer 72=9x8. is he correct ? explain at least two strategies travis to check his work

Since, Travis writes .

Yes, he is correct.

We will use two strategies to check Travis work.

First strategy:

We will divide '72' by '9'.

Since,

So, the expression which Travis wrote as is correct.

Second strategy:

We will add '9' eight times.

Therefore,

So, the expression is correct.

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

4th option is correct xy=-10

if this was to u plzz mark me the brainliest