Answer: r - 24
Step-by-step explanation:


![\frac{[(r+2)(2r-9)]-(r^2+17r+30)}{r+2}](https://tex.z-dn.net/?f=%5Cfrac%7B%5B%28r%2B2%29%282r-9%29%5D-%28r%5E2%2B17r%2B30%29%7D%7Br%2B2%7D)



Combine like terms;

Solve the quadratic equation;

Simplify;

Yes, they are. The correct answer is the middle answer on the picture.
Answer:
Area = (2-3x)(2x+5)(x-1)
= -6x³-5x²+21x-10
Step-by-step explanation:
Answer:
201
Step-by-step explanation:
Acute
Angle ∠ A = α = 25.385° = 25°23'6″ = 0.443 rad
Angle ∠ B = β = 73.004° = 73°14″ = 1.274 rad
Angle ∠ C = γ = 81.611° = 81°36'41″ = 1.424 rad