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Anna11 [10]
3 years ago
12

The mean weight of females in a class is 60kg and that of the males is 72kg. If the mean

Mathematics
1 answer:
zimovet [89]3 years ago
5 0

Answer:

1:2

Step-by-step explanation:

Let's say there are x males and y females in the class.

The sum of all male weights will be 72x, and the sum of all female weights will be 60y.

If we get a class mean weight, we have:

(72x + 60y) / (x+y) = 68

72x + 60y = 68x + 68y

4x = 8y

y / x = 4/8 = 1/2

So the ratio of females to males is the class is 1:2

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ANEK [815]

Answer:

D 2+6x

Step-by-step explanation:

-2/3(-3-9x)

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8 0
3 years ago
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Answer:

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Step-by-step explanation:

To do this without a calculator you need to get common denominator

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8 0
3 years ago
1. A sum of money is shared among Jessica, Amanda, and Beverly in the ration 8:9:3
astra-53 [7]

Answer:

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Step-by-step explanation:

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