Answer:
9 years.
Step-by-step explanation:
Make x the number of years passed.

12 + 4x = 39 + x
27 = 3x
x = 9
Answer: I believe that the answer is B. F(x) = x^2 - 9 / 7x
Answer:
The height of the second cone is 2 <em>h</em>₁.
Step-by-step explanation:
The volume of a cone is:

The volume of the first cone is, <em>V</em>₁ = 5 in³.
The volume of the second cone is, <em>V</em>₂ = 10 in³.
The two cones have the same base diameters.
This implies that the two radii are same, i.e. <em>r</em>₁ = <em>r</em>₂.
Compute the height of the second cone as follows:





Thus, the height of the second cone is 2 <em>h</em>₁.
Answer:
Step-by-step explanation:
True