And airplanes at altitude change -378 ft over 7 minutes what was the mean change of altitude in feet per minute?

-54 ft/min

Step-by-step explanation:

Find this rate of change as follows:  (change in altitude) / (time).

Here, that would be -378 ft  /  7 min = -54 ft/min

angle q= 92 degree

step-by-step explanation:

the solution is in the picture

when a quadrilateral is inscribed in a circle, the opposite angles are supplement to each other. in other words, the sum of the 2 angle is 180 degree