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masha68 [24]
3 years ago
11

X is inversely proportional to y, and x = 18 when y = 4. Write an equation relating the two

Mathematics
1 answer:
Alenkasestr [34]3 years ago
8 0

Answer:

xy=72

Step-by-step explanation:

If x is inversely porportionaly to y, then for some constant k,

x = \frac{k}{y}\\xy=k

Since y is 4 when x = 18, k is equal to 4*18=72, so the equation is:

xy=72

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