An object travels 4/5 miles in one half hours what is his spead in one hour

If you would like to know how much does the object travel in one hour, you can calculate this using the following steps:

4/5 miles ... half an hour = 30 minutes
x miles = ? ... one hour = 60 minutes

4/5 * 60 = 30 * x     /30
x = 4/5 * 60 / 30
x = 4/5 * 2
x = 8/5 = 1 3/5 miles

The correct result would be 1 3/5 miles in one hour.

This polygon has 4 sides
180(4-2) = 180(2) = 360 degree
80+90+2x + 3x = 360
170+5x = 360
5x = 190
x= 38
measure of angle t is 2(38)= 76
the answer is c. trust me
hope this !