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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.

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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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.

User Reza Heydari
by
8.1k points

1 Answer

7 votes

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

User Martin Paucot
by
8.1k points
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