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Alona [7]
3 years ago
14

A bag contains 2 steel balls and 5 brass balls. The total weight is 13 pounds. If 2 steel balls are added and 2 brass balls are

removed, the weight decreases to 12 pounds. How much does each kind of ball weigh?
Mathematics
1 answer:
puteri [66]3 years ago
8 0
Steel balls are 1.5 pounds, brass are 2 pounds
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The length of a rectangle is three inches more than the width. the area of the rectangle is 180 inches. find the width of the re
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We have a rectangle with length L that is 3 inches more than the width W. Then we can write this as:

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We have to find the width W.

As the area is equal to the product of the length and the width, we can write this equation and solve for W as:

\begin{gathered} A=180 \\ L\cdot W=180 \\ (W+3)\cdot W=180 \\ W^2+3W=180 \\ W^2+3W-180=0 \end{gathered}

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