In order to solve am equation with the quadratic formula, we need to take the coefficients that are available and use them with the quadratic formula. Since there are no coefficients given here, we would just use the quadratic formula in its base form.
I don’t know part a but part b is -87 feet
First, we must know that we can find the volume of a prism using the formula
Volume = length × width × height
Since we are finding the volume of a cube, all the sides will be the same length so we can represent this as Volume =
.
Now, we can substitute in our values. It does not matter where the numbers go because they are all the same.
7.5 × 7.5 × 7.5 = 421.875
Therefore, the volume of the prism is 421.875 
Answer:
7kg:1kg=7:1 itself
Because 7 and 1 has one '1' as a common factor, so they can't be simplified