Answer: greater than 10 & less than 20
Step-by-step explanation:
Answer:
<u>The correct answer is C. A(x) = 480/x +2x²</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the problem correctly:
Volume of a rectangular prism with square base = 120 cubic feet
Side of the square base = x
Height of the prism = h
2. Write the surface area of the prism as a function A(x) of the length of the side of the square x.
Let's find out A(x) this way:
Volume of a rectangular prism with square base = 120 cubic feet
x² * h = 120
h = 120/x²
Now, let's substitute h in the surface area formula, this way:
Surface area = 2 * side of the square base² + 4 * side of the square base * height
A(x) = 2x² + 4x * 120/x² (Recall 120/x² = h and side of the square = x)
A(x) = 2x² + 480x/x²
<u>A(x) = 2x² + 480/x </u>
<u>The correct answer is C. A(x) = 480/x +2x²</u>
Answer:48units2
Step-by-step explanation:
<span>The first three steps of completing the square to solve the quadratic equation x^2 + 4x - 6 = 0, are shown below.
step 1: x^2 + 4x = 6
step 2: x^2 + 4x + 4 = 6 + 4
step 3: (x + 2)^2 = 10
step 4: x + 2 = +/-sqrt(10)
step 5: x = sqrt(10) - 2, or x = -sqrt(10) - 2
so the steps are in order.</span>
Answer:
Step-by-step explanation:
g(2) = 3(2) + 1 = 6 + 1 = 7
h(7) = 2(7) - 1 = 14 - 1 = 13
