Answer:
B. 30 ft
Step-by-step explanation:
The ladder is 32 ft long
The angle of elevation of the ladder is 70°
The height (h) of the top of the ladder to the ground is what we are to find.
= sin 70°
h = 32 × sin 70° = 30.07016387 or 30 ft (rounded off to nearest feet)
b is decreased by 25% which means there will be (-ve) sign.
Factor 4x+8
4x+8
=4(x+2)
4(x+2)
Answer: A= 68 square centimeters
A= +/2 x h
6+11=17
17/2=8.5
8.5 x 8= 68