3 years ago

Mark is 7 years older than his brother, who is y years old. Which expression correctly represents Mark's age?

Mathematics

1 answer:

Alex787 [66]3 years ago

3 0

7 + Y = X (x= His unknown age)

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Step-by-step explanation:

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Step-by-step explanation:

Given:

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Distance d = $\sqrt{(x_2-x_1)^2 +( y_2-y_1)^2$

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