Cassie is training for a 10-kilometer race. As she runs, she notices that her heart is beating at a rate of 315 beats every three minutes.
What is her heart rate, expressed in beats per minute?
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Answer:
105 beats/min
Step-by-step explanation:
315 beats/3min For every 3 minutes her heart beats 315 times
therefore 315 divided by 3 minutes should get you your answer because her heart beats 315 times PER(dividing. per means divide) 3 minutes.
therefore 315 beats / 3 minutes Notice beats per min is written as beats/min because we dividing.
= 105 beats/min
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