Question

How are the ratios 45 beats​:1 h and 315 beats​:7 h ​alike? How are they​ different?
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Part 1
Both ratios are
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and they are
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not equivalent.
equivalent.
The ratio 45 beats​:1 h is
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not a unit rate.
a unit rate.
The ratio 315 beats​:7 h is

Answer 1

Both are rates (beats per hour) and they are equivalent — both equal 45 beats per 1 hour (315 ÷ 7 = 45). The ratio 45 beats:1 h is a unit rate. The ratio 315 beats:7 h is not written as a unit rate (but it simplifies to the same unit rate, 45 beats per hour).