Find the least common multiple of 5 10 and 15

Mathematics

1 answer:

vova2212 [387]3 years ago

7 0

The least common multiple of all 3 of those numbers is 5

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Lee is thinking of 2 numbers, the product is 18.the quotient is 2. what are yhe two numbers?

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$xy=18\\
\dfrac{x}{y}=2\\\\
xy=18\\
x=2y\\\\
2y\cdot y=18\\
2y^2=18\\
y^2=9\\
y=-3 \vee y=3\\\\
x=2\cdot (-3) \vee x=2\cdot 3\\
x=-6 \vee x=6\\\\
\boxed{(x,y)=\{(-6,-3),(6,3)\}}$

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