Simplify the radical. Assume that all variables represent nonnegative real numbers. 
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the center (h, k) and radius r of the circle with the given equation. x2 + (y - 5)2 = 16
A. (h, k) = (5, 0); r = 16 B. (h, k) = (0, 5); r = 16 C. (h, k) = (0, 5); r = 4 D. (h, k) = (5, 0); r = 4
Mathematics
Solve the problem.Given that the polar equation r = 
models the orbits of the planets, estimate the smallest possible distance between Earth, for which 
and 
and Venus, for which 
and 
A. About 0.4 astronomical units B. About 2 astronomical units C. About 0.2 astronomical units D. Zero astronomical units
Mathematics
Each matrix is nonsingular. Find the inverse of the matrix. Be sure to check your answer.
A. 
B. 
C. 
D. 
Mathematics
Find the square.(5x + 8y)2
A. 25x2 + 80xy + 64y2 B. 5x2 + 80xy + 64y2 C. 25x2 + 64y2 D. 5x2 + 64y2
Mathematics