Solve and check.x2 - 4x - 21 = 0
A. 3, 7
B. -3, -7
C. -3, 7
D. -7, 3
Answer: C
Mathematics
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Provide an appropriate response.Is (2y + 1) a factor of (14y2 + 35y + 14)?
Fill in the blank(s) with the appropriate word(s).
Mathematics
For the given functions f and g, find the requested function and state its domain.f(x) = 5x3 - 2; g(x) = 6x2 + 1Find f ? g.
A. (f ? g)(x) = 5x3 + 6x2 - 2; (-?, ?) B. (f ? g)(x) = 30x5 + 5x3 - 12x2 - 2; (-?, 0) ? (0, ?) C. (f ? g)(x) = 30x5 + 5x3 - 12x2 - 2; (-?, ?) D. (f ? g)(x) = 30x6 + 5x3 - 12x2 - 2; (-?, ?)
Mathematics
Use the change-of-base formula and a calculator to evaluate each logarithm.log300 40
A. 0.6467 B. 3.6889 C. 1.5462 D. 5.7038
Mathematics
Use a graphing utility to graph the equation.6x2 + 5
xy + y2 = 20
A. 
B. 
C. 
D. 
Mathematics