Step-by-step explanation:
I am only sure about the first one but as for the rest I am not really but I tried...if you need explanations to the first one feel free to ask me
The triangle to solve for has a leg or 12 feet, hypotenuse of 20 feet, so solve for Pythagoras

for a

a = 16 feet
Answer:
$8.90
Step-by-step explanation:
((2)(2.90))+(3.10)= $8.90
Answer:
B
Step-by-step explanation:
I hope this helps!