Fill in the blank.A letter or symbol used to represent an unknown quantity is called a(n) _____.
A. factor
B. variable
C. constant
Answer: B
Mathematics
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Use your calculator to evaluate the expression. If necessary, round your answer to the nearest thousandth.e
A. 6.078 B. 3.687 C. 12.182 D. 9.356
Mathematics
Find (P ? Q)(x).P(x) = x + 3; Q(x) = x2 - 9
A. x3 - 6x2 - 27 B. x2 - 6x - 27 C. x3 + 3x2 - 6x - 27 D. x3 + 3x2 - 9x - 27
Mathematics
Solve the system by the substitution method.
A. {(-8, 62), (5, 23)} B. {(8, 62), (-5, 23)} C. {(8, 66), (-5, 27)} D. {(-8, 62), (-5, 23)}
Mathematics
Simplify. Assume all variables are non-negative real numbers.
A. 6x2
B. 5
C. 5x
D. 150x
Mathematics