The length of a ping pong table is 3 ft more than twice the width. the area of a ping pong table is 90 ft. what are the dimensions of a ping pong table?

6ft by 15 ft

Explanation:

Width = x

Length = 2x + 3

Area = 90 ft²

x(2x + 3) = 90

2x² +3x - 90 = 0

(x - 6) (2x + 15) = 0

x = 6 or x = -15/2

x = 6 ft

2x + 3 = 2 x 6 + 3 = 15 ft

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answer: d.) the total number of protons and neutrons is 15

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step-by-step explanation:

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