Simplify by combining pairs of like terms.20x - 3x - 9 + 10

A. 17x + 1
B. 23x + 19
C. -17x + 1
D. 17x + 10 - 9


Answer: A

Mathematics

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A.
B. 288
C. 57
D. 288

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Write the expression in simplest form. If a radical appears in the denominator, rationalize the denominator.

A. 7k3q4 
B. 7q4
C. 7k3q4 
D. 7k7q8 

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A. x ? -3 B. x ? 3 C. x ? -3, x ? 3 D. -3 ? x ? 3

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Give a geometric description of the set of points whose coordinates satisfy the given conditions.(x - 6)2 + (y - 8)2 + (z - 2)2 < 16, - 2 ? z ? 0

A. All points within the lower hemisphere centered at (6, 8, 2) B. No set of points satisfy the given relations. C. All points outside the lower hemisphere centered at (6, 8, 2) D. All points on the lower hemisphere centered at (6, 8, 2)

Mathematics