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25 January, 18:50

A scientist measured the length of a laboratory rat. It was 6.42 inches. The next time she measured it, the rat had grown to a length of 7.323 inches.

How much did the length of the laboratory rat increase?

A. 0.903 inches

B. 1.103 inches

C. 6.681 inches

D. 13.743 inches

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Answers (2)
  1. 25 January, 20:32
    0
    A) 0.903

    You have to subtract
  2. 25 January, 20:41
    0
    So to answer this question you take the length of the rat right now minus the length that is was. So you take 7.323 - 6.42 = 0.903. And to double check your answer you can take 6.42 + 0.903 = 7.323. Your answer is A. 0.903 inches the rat had grown.
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