<span>The distance to the base of the tower is
tan 40=100/x
x=100/tan 40=119.18 m
from the top of the building, we know the adjacent side but not the opposite
tan 30=opposite/119.18
opposite is 119.18*tan30=68.81 m
The opposite side is the height of the tower ABOVE the apartment building. The tower itself is 100 m high, and the remainder of the height, 31.19 m, is the height of the building.</span>
Here is the answer for the problem.
(x+3)(x+4)
x^2+4x+3x+12
x^2+7x+12
You have to use the equation (72+y)=5(4+y) which Y =+13
Answer:
A
Step-by-step explanation:
A