Answer: 
Step-by-step explanation:
Given
The height of hill is 120 ft and the angle of elevation is 
Suppose the length of the road is 
From the figure, we can write

Thus, the length of the road is 
Yes it makes it a true statement because if my math is correct it will add up and the negative is not canceled. That’s only with multiplication
Answer:
the answer to the nearest tenths is 7.8
Two fractions where the LCD between them is 20 can be 7/20 and 20/40.
I chose these 2 fractions because 7/20 cannot be reduced anymore, but 15/40 can be reduced into 10/20.