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Mathematics 9 Online
thatdude7:

Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete. What is the equation that can be used to find the value of y, the total time that Vlad spent on his homework, and what are the constraints on the values of x and y?

Vocaloid:

If each math problem takes 2 minutes and he solved (x) problems, then he spend 2*x minutes solving them Add this onto the 20 he spent on history Set the sum equal to the total time to get the final equation As for constraints - what possible values for x are there? Can x be negative, or a fraction? What about y?

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