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Veseljchak [2.6K]
3 years ago
11

y is inversely proptional to x when y = 7, x = 9 a) work out an equation connecting y and x b) work out the value of y when x =

21
Mathematics
1 answer:
OLga [1]3 years ago
3 0

Answer:

a) yx=63

b) y=3

Step-by-step explanation:

a)

yx=k (inverse formula)

7(9)=k

63=k

b)

y(21)=63

y=63/21

y=3

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Answer:

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Step-by-step explanation:

I'd need more information about how many students there are at one of the schools. For example, if there are 200 students at Park Elementary, then there are 1000 at Lane High School since 200 x 5 = 1000. 1000 - 200 is 800, so there would be 800 more students at Lane High.

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3 years ago
How to find the mean of percentages
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Step-by-step explanation:

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Hope I answered your question. Stay safe, happy, and healthy, thank you :) !!

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