Use the quadratic formula to solve the equation. (All solutions are real numbers.)a2 + 14a + 40 = 0
A. {4, 10}
B. {-20, -8}
C. 
D. {-10, -4}
Answer: D
Mathematics
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Find the average value of the function f over the given region.f(x, y) = 7x + 9y over the region bounded by the coordinate axes and the lines 
and 
.
A. 
B. 52
C. 26
D. 39
Mathematics
Provide an appropriate response.Find the discriminant of the equation: 10 + 4x - x2 = 0
A. The discriminant value is -24. B. The discriminant value is 56. C. The discriminant value is 24i. D. The discriminant value is 48.
Mathematics
Factor the expression.x2 + 20x
A. x2(1 + 20x) B. x(x2 + 20) C. x(x + 20) D. No common factor
Mathematics
Indicate which symbol, ? or ?, makes the statement true.{3} {1, 2, 3, . . . , 10}
A. ? B. ?
Mathematics