Stacey's typical exercise routine involves lifting weights, running on the treadmill, and doing sit-ups. For her last workout, she chose a preset program on the treadmill that simulated a challenging run. The data in the table below represents various times
and distances of this run. What is average speed between 7 minutes and 13.2 minutes?

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

d

step-by-step explanation: