5 female giraffes have a mean weight of x kg 7 male giraffes have a mean weight of y kg Write down an expression, in terms of x and y, for the mean weight of all the giraffes.

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asked Jun 8, 2021 79.2k views

5 votes

5 female giraffes have a mean weight of x kg

7 male giraffes have a mean weight of y kg
Write down an expression, in terms of x and y, for the mean weight of all the giraffes.

Mathematics
middle-school

Reza Heydari asked

by Reza Heydari

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1 Answer

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Explanation:

Weight of all female giraffes = 5x kg

Weight of all male giraffes = 7y kg

Mean weight of all giraffes

$= (5x + 7y)/(5 + 7) \\ \\ = (5x + 7y)/(12) \: kg$

Martin Paucot answered Jun 15, 2021

by Martin Paucot

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