3 years ago

For the inverse variation equation xy = k, what is the constant of variation, k, when x = 7 and y = 3? 3/7 7/3 10 21

2 answers:

8 0

Option D! which would be 21!

Elza [17]3 years ago

4 0

Hello there,

So by using the formula xy=k just plug in both x and y.

So this would be (7)(3)=k

Which means 21=k

Hope this helped!

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Andrew [12]

Step-by-step explanation:

On Monday maggie ran n miles.

On Tuesday, she she ran 90% of the number of miles that she ran on Monday i.e $\dfrac{90}{100}\times n=0.9n$ .

On Wednesday, she ran 50% of the number of miles that she ran on Tuesday i.e. $\dfrac{50}{100}\times 0.9n=0.45n$

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