Answer:
4.5
Step-by-step explanation:
→ Set up the direct proportion equation
z = kx
→ Substitute in the values
12 = 3k
→ Divide both sides by 3 to isolate k
4 = k
→ Substitute the value of k back into the original direct proportion equation
z = 4x
→ Substitute the value of z in
18 = 4x
→ Divide both sides by 4 to isolate x
4.5 = x
Answer: The costs are 8.4% of the total revenue.
The stadium is going to make $750,000 for the naming rights of the stadium. The cost to the stadium is on $63,000.
To find the percent, we have to divide the two values and multiply by 100.
63000 / 750000 x 100 = 8.4%
For this case we have the following equation:

Deriving we have:

We match zero:

We clear the value of x:

Then, we substitute the value of x in the equation of the parabola:

Thus, the vertex of the parabola is the ordered pair:
Answer:
The vertice is:
You have to factor by grouping.
(4a - 5) (a + 4)
Nanometer, micrometer, millimeter, centimeter, decimeter, meter, kilometer