Well, the very first thing you need to do is to <span> find the slope of the line
According to the fact that we already know that the slope is parallel </span>to the line, you can easily find out the slope, to be more exact :

Straight after, you have to use <span>point slope formula</span>
Given: 
Now factoring them,


Therefore, the answer to the question is 
D = 5/6 sqrt(h)
7 = 5/6 sqrt(h)
42/5 = sqrt(h)
h = (42/5)^2 = 1,764/25 = 70.56
The height of the mast is 70.56 miles
Answer:
Step-by-step explanation:
You divide 7.42 / 1.75 = the answer is 4.24