Doug entered a canoe race. He rowed 3.5 miles in 0.5 hours. What is his average speed in miles per hour?

1 answer:

3 0

Wassup, since 0.5 hours is 30 minutes, which is half an hour, all you need to do to get your answer is multiply 3.5 by 2. Your answer is 7. I hope this answer was helpful.

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rosijanka [135]

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a) y = 5x

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Step-by-step explanation:

Since, y is directly proportional to x when y=30, x=6

$\therefore \: y \: \alpha \: \: x \\ \therefore \: y = kx ...(1) \\ plug \: y = 30 \: and \: x = 6 \: in \: eq \: (1)\\ 30 = k \times 6 \\ k = \frac{30}{6} \\ k = 5 \\ plug \: k = 5 \: in \: (1) \\ y = 5x....(2) \: (required \: equation) \\ plug \: x = 12 \: in \: eq \: (2) \\ y = 5 \times 12 \\ \huge \red{ \boxed{y = 60}}$