If the smaller number is x, then the larger number has to be 20 - x in order for the arithmetic mean to be 10, as their sum must be 20.
If the geometric mean is 8 the product of the numbers has to be 64 and so the larger number is 64/x
Solving 64/x = 20 - x gives the quadratic x^2 -20x +64 = 0 so x = 4 or 16.
The two numbers are 4 and 16.
Answer:
The future value is $3793.776
Step-by-step explanation:
Given
--- present value
--- rate
--- time
--- quarterly
Required
Determine the future value
This is calculated using:

So, we have:






Answer:
angle bisector
Step-by-step explanation:
Subtract 4x from both sides
Then divide both sides by 9 to isolate y
Y=(6-4x)/9
16x^4-81y^4 difference of perfect squares...
(4x^2-9y^2)(4x^2+9y^2) that's one of the equivalents...
(2x+3y)(2x-3y)(4x^2+9y^2) that's another one of them...