Answer:
B=9 (I'll solve right now, just so you get the answer)
Step-by-step explanation:
Expand right side by distributing
Use the FOIL method to simplify (first, outside, inside, last):
Simplify
Re-insert
Cancel out 
Move all terms to one side
Simplify
Factor out the common term 2
Answer: b=20
Step-by-step explanation:
Subsitute a for 20.
b=20/4-3
b=20/1
b=20
Answer:
x
32
Step-by-step explanation:
"A number at least 32"
Let's use x as the number
x32
Reason: at least means greater than or equal to
1. BC = 9 tan 45 = 9 ft
AC = 9 tan 60 = 9 sqrt(3) ft
AB = AC - BC = 9sqrt3 - 9 ft ~ 6.59 ft
2. G-Zoo = 200sqrt3 / tan 60 = 200 ft
G-Library = 200sqrt3 / tan 30 = 600 ft
Zoo-Library = G-Library - G-Zoo = 600 - 200 = 400 ft
Answer:
A
Step-by-step explanation:
