Ask Question
12 March, 09:02

A cube has side length x. One side of the cube is increased by 4 inches, and another side is doubled. The volume of the new rectangular prism is 450 cubic inches. The equation 2x^3+8x^2=450 can be used to find x. Find the side length of the original cube. Use a graphing calculator and a system of equations to find the answer. A. 4 inches B. 5 inches C. 9 inches D. 10 inches

+3
Answers (1)
  1. 12 March, 10:04
    0
    This equation can be obtained simply by multiplying the three dimensions of the cube.

    Length = x + 4

    Width = 2x

    Height = x

    Volume = (x + 4) (2x) (x)

    450 = 2x³ + 8x²

    Using a graphing calculator and plotting this, we see that the solution of this equation is 5.

    Therefore, the original side was 5 inches. The answer is B
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A cube has side length x. One side of the cube is increased by 4 inches, and another side is doubled. The volume of the new rectangular ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers