Answer:
4/5
Step-by-step explanation:
You can remove the trailing 0s, and you have 0.8
this is equal to 8/10
8 and 10 can be divided by 2
8÷2=4
10÷2=5
thus, you get 4/5
Speed is d/t or distance/time so 70/3 = 23.33 mph
"77.25 in²" ..............
No they arent proportional