Solve the problem.The diagonal d (from the lower back corner to the upper front corner) of a rectangular solid, like the one shown below, is given by d = 
A rectangular shipping crate has a diagonal of 39 inches. If the longest side of the crate is 4.0 times the shortest side, and the other side is 3.0 in. longer than the shortest side, find all measurements of the crate, to the nearest inch. 
x x + 3.0 4x
A. 10 in., 13 in., 40 in.
B. 15 in., 16 in., 60 in.
C. 15 in., 36 in., 39 in.
D. 9 in., 12 in., 36 in.
Answer: D
Mathematics
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A. (3, 0), (0, -3), (0, 1), (0, 5) B. (-3, 0), (1, 0) (5, 0), (0, 3) C. (3, 0), (0, 3), (0, 1), (0, -5) D. (3, 0), (1, 0), (-5, 0), (0, 3)
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Find the exact value by using a half-angle identity.tan 
A. 2 + 
B. -2 + 
C. -2 - 
D. 2 - 
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Suppose ABC is a right triangle with C = 90°. ? If a = 6 and c = 10, find b. ?
A. b = 9 B. b = 13 C. b = 8 D. b = 4 E. b = 10
Mathematics
Solve the system of equations using the inverse of the coefficient matrix.
A. x = -3, y = 4 B. x = -4, y = 3 C. x = 3, y = -4 D. x = 4, y = -3
Mathematics