Solve the problem.Among all pairs of numbers whose sum is 86, find a pair whose product is as large as possible.
A. 21.5 and 21.5
B. 45 and 41
C. 85 and 1
D. 43 and 43
Answer: D
Mathematics
You might also like to view...
Find the length of the curve.The spiral r = 2?2, 0 ? ? ? 2
A. 
?5
B. 
((?2 + 1)3/2 - 1)
C. 
D. 
Mathematics
Find the probability.A bag contains 6 red marbles, 3 blue marbles, and 1 green marble. What is the probability that a randomly selected marble is not blue?
A. 
B. 
C. 
D. 7
Mathematics
Graph the circle.(x - 2)2 + (y + 4)2 = 16
A. 
B. 
C. 
D. 
Mathematics
Find the vertex, focus, directrix, and focal width of the parabola.- 
x2 = y
A. Vertex: (0, 0); Focus: (0, -10); Directrix: y = 10; Focal width: 40 B. Vertex: (0, 0); Focus: (-20, 0); Directrix: x = 10; Focal width: 160 C. Vertex: (0, 0); Focus: (0, 10); Directrix: y = -10; Focal width: 10 D. Vertex: (0, 0); Focus: (0, -10); Directrix: y = 10; Focal width: 160
Mathematics