Fill in the blank.Since 6 x 7 = 42; the 6 and 7 are _____ of 42.
A. prime numbers
B. variables
C. factors
Answer: C
Mathematics
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Find the amplitude or period as requested.Find the amplitude of y = 2 sin (3x + ?).
A. 6 B. ? C. 3 D. 2
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Decide whether the pair of lines is parallel, perpendicular, or neither.The line through (3, -5) and (-1, 7) and the line through 
and 
A. Parallel B. Perpendicular C. Neither
Mathematics
Solve the problem.To get a B in biology, Katie must have a mean score of 81 on five lab reports. Scores on the first four lab reports were 90, 77, 76, and 83. What is the lowest score that Katie can get on the last lab report and still receive a B?
A. 82 B. 75 C. 79 D. 81
Mathematics
Use Cramer's rule to solve the linear system.
A. {(2, 2, 2)} B. {(3, -2, -2)} C. {(3, 2, 2)} D. {(4, 0, 2)}
Mathematics