Choose the closest estimate.200-lb barbell.
A. 400 kg
B. 200 kg
C. 20 kg
D. 100 kg
Answer: D
Mathematics
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Multiply or divide as indicated.
÷ 
A. 2x(x - 5) B. 2x(x + 5) C. -2x(x - 5) D. -2x(x + 5)
Mathematics
Factor the sum or difference of two cubes completely.4k3 + 32
A. 4(k + 2)(k2 + 2k + 4) B. 4(k - 2)(k2 + 2k + 4) C. 4(k + 2)(k2 - 2k + 4) D. 4(k + 8)(k2 - 8k + 16)
Mathematics
Solve the right triangle using the information given. Round answers to two decimal places, if necessary. 
a = 4, c = 10; Find b, A, and B.
A. b = 10.77 A = 23.58° B = 66.42° B. b = 10.77 A = 24.58° B = 65.42° C. b = 9.17 A = 23.58° B = 66.42° D. b = 9.17 A = 66.42° B = 23.58°
Mathematics
Tell whether the relation is a function.
A. Function B. Not a function
Mathematics