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

Question

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

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Ariana 3 weeks 2021-09-26T19:49:29+00:00 1 Answer 0

Answers ( )

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    2021-09-26T19:51:21+00:00

    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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45:7+7-4:2-5:5*4+35:2 =? ( )