Simplify.-4 + 3(-5) - 2
A. -24
B. -20
C. 25
D. -21
Answer: D
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A. 210°; 330° B. 150°; 210° C. 60°; 120° D. 60°; 300°
Solve. If necessary, round answers to the nearest tenth unless stated otherwise.A hot-air balloon exerts a 1100 lb pull B on a tether line at a 60° angle with the horizontal. Resolve the vector B into components.
A. Horizontal: 550 lb, vertical: 952.6 lb B. Horizontal: 1270.2 lb, vertical: 2200 lb C. Horizontal: 2200 lb, vertical: 1270.2 lb D. Horizontal: 952.6 lb, vertical: 550 lb
Solve the problem.How many liters of a 20% alcohol solution must be mixed with 30 liters of a 50% solution to get a 30% solution?
A. 60 L B. 9 L C. 6 L D. 90 L
Simplify. Do not leave negative exponents in your answer.(-4)-2
A. 16
B. - 
C. 
D. -16