Answer:
A, 
Step-by-step explanation:
a^2 + b^2 = c^2
8^2 + b^2 = 9^2
64 + b^2 = 81
b^2 = 17
b = 
Because if there is no more supplies for the sale, the sale can't apply to nothing!
Answer:

Step-by-step explanation:
Exponent Multiplication Rule :

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Solving :
⇒ 
⇒ 
⇒ 
187 centimeters is 1.87 meters
Area of the triangle:
A = 1/2 · c · b · sin A =
= 1/2 · 30 · 14 · 0.766 ≈ 160.87 ft²
Answer: 160.87 ft²