Solve the problem.Of all possible pairs of positive numbers having a sum of 80, which pair has the maximum product?
A. 30 and 50
B. 39 and 41
C. 31 and 49
D. 40 and 40
Answer: D
Mathematics
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Find the equation of the hyperbola satisfying the given conditions.Vertices at (0, 6) and (0, -6); asymptotes y = 
x and y = - 
x
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = -2x2, [0, 4], midpoint
A. 
B. 
C. 
D. 
Mathematics
For what value of b are the graphs of the pair of equations perpendicular?
?
?
?
A. 
B. 7
C. 
D. 3
E. -3
Mathematics
Factor the trinomial completely.6z2 - 5z - 6
A. (3z + 2)(2z - 3) B. (3z - 2)(2z + 3) C. (6z + 1)(z - 6) D. (6z + 2)(z - 3)
Mathematics