Simplify the expression. Use positive exponents. Assume variables represent nonnegative numbers.(8a)(5a2)
A. 8a + 5a2
B. 40a3
C. 13a3
D. 40a4
Answer: B
Mathematics
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Plot the point given in polar coordinates.(2, 0°) 
A. 
B. 
C. 
D. 
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Simplify. Assume that no radicands were formed by raising negative quantities to even powers.4
+ 7
A. 55
B. 11
C. 11
D. 28
Mathematics
Solve.On part of a scenic tour of underground caves, Dave and Neil started at an elevation of - 46 feet. They then rose 15 feet. What was their elevation at this point?
A. 31 ft B. 61 ft C. -61 ft D. -31 ft
Mathematics
Find the exact solutions to the quadratic equation in the complex numbers.x2 - 4x + 29 = 0
A. -2 ± 5i B. 4 ± 10i C. 7, -3 D. 2 ± 5i
Mathematics