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Komok [63]
3 years ago
7

The number of boys varies directly as the number of girls and inversely as the number of teachers. When there are 24 boys and 16

girls, there are 2 teachers. How many girls are there when there are 72 boys and 1 teacher?
Mathematics
1 answer:
lidiya [134]3 years ago
3 0
SO from what I did was...

Since 24 x 3 = 72 , I did the same to 16. 

16 x 3 = 48 

But because instead of their being 3 teachers there is 1... What I did is just was to divide 48 / 2 which gave me the answer of 24... 

So what I think the answer is... 

There are 72 boys, 24 girls, and 1 teacher... 

Unless I am just dumb and it would be 48 girls, but I think I did it right. 

I hope I was able to help out.
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aleksandr82 [10.1K]

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v = 13

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Step-by-step explanation:

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E_1 : 6v + 13b = 377\\E_2:  4v + 9b = 259\\\\4E_1 + (- 6)E_2:\\24v + 52b = 1508\\-24v - 54b=-1554\\\\0v -2b = -46\\-2b = -46\\b = 23\\\\4v + 9(23) = 259\\4v + 207 = 259\\4v = 52\\v = 13\\\\6(13) + 13(23)\\78 + 299\\377

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The diagram shows two shapes A and B. Prove that both of them have equal perimeter.​
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see explanation

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