Find the common ratio for the geometric sequence.20, 10, 5, 2.5, 1.25, . . .
A. 0.5
B. -0.5
C. 1.25
D. 2
Answer: A
Mathematics
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Express the number in standard notation.1.11 × 10-4
A. 0.00111 B. -111,000 C. 0.000111 D. 0.0000111
Mathematics
Find an equation of the circle satisfying the given conditions.Center at (0, -3), radius 
A. (x + 3)2 + y2 = 100 B. (x - 3)2 + y2 = 100 C. x2 + (y + 3)2 = 10 D. x2 + (y - 3)2 = 10
Mathematics
Use the distributive property to write the expression without parentheses. Then simplify, if necessary.
(15x - 10)
A. 3x - 10 B. 75x - 50 C. x D. 3x - 2
Mathematics
Use the elimination method by addition to find the solution for the following system.
A. x = -9, y = -1 B. x = -5, y = 7 C. x = 5, y = 7 D. The system is inconsistent.
Mathematics