20 because for all regular polygons their exterior angles add up to 360, so 360\18 =20
√x + 11=15 x=16
√x= 15-11 x=16
Answer:
i think this is what u are,asking
-13 to 0 = 13 degrees changed. 0 to 22 is 22 degrees changed. 13 + 22 = 35 degree change.
10-3 = 7.
So there was a change of 35 degrees across 7 hours
35/7 = 5 degrees per hour.
