Kayla began a science experiment with 18 grams of an unknown solid. During the experiment, the change in the mass of the solid was
7 grams. What was the mass of the solid at the end of the experiment?
To solve the problem, Edna subtracted 18–(
7) and came up with an answer of 25 grams. Is Edna correct?
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Answer:
yes it is correct because the mean of the first five observation is 7 grams and 18 grams
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