Among all pairs of numbers whose sum is 4, find a pair whose product is as large as possible. What is the maximum product? The pair of numbers whose sum is 4 and whose product is as large as possible is

8 and 8; 64

Step-by-step explanation:

1. x + y = 16                                                          

2. y = 16 - x                                                          

3. Product = xy = x (16 - x) = - + 16x = f(x)                          

4. x-coordinate of the vertex =

5. y = 16 - 8 = 8

6. xy = 8(8)= 64

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2