Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.(-4a3)2
A. 4096a6
B. -8a3
C. 4096a3
D. 16a6
Answer: D
Mathematics
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A. 
B. 
C. 
D. 
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Solve the problem.The voltage E in an electrical circuit is given by E = 7.1 cos 80?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 80
B. 
C. 40
D. 
Mathematics
Find the least common multiple.x2 + 3x, x2 + 4x + 3
A. (x + 2)2 B. x(x + 3)(x + 1) C. x(x + 2)2 D. x(x + 2)(x + 1)
Mathematics
Approximate the circumference of the circle using 3.14 as an approximation for ?.
A. 15.70 yd B. 19.63 yd C. 31.40 yd D. 7.85 yd
Mathematics