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creativ13 [48]
3 years ago
5

In 10 minutes a heart can beat 700 times. At this rate, in how many minutes will a heartbeat 140 times? At what rate can a heart

beat?
Geography
2 answers:
Luden [163]3 years ago
7 0
Set up a proportion.

Beat in 10 minutes : minutes = 140 beats : unknown minutes.

700 : 10 = 140 : x

x = (140*10)/700 = 1400/700 = 2

Answer 2 minutes
Ivanshal [37]3 years ago
4 0
Answer:

Heart will beat 140 times in 2 minutes.
Heart beats at a rate of 70 beats per minute.

Explanation:

In 0 minutes heart beats 700 times

hence in 1 minute it will beat <span><span>70010</span>=70</span> times

and heart will beat 140 times in <span><span>14070</span>=2</span> minutes

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