please help with biology????

label Biology
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  1. In a blood pressure reading of 120/80 (the index for normal blood pressure), your systolic pressure is the number _____.
Oct 23rd, 2017

systolic pressure is 80

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Jun 7th, 2015

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Oct 23rd, 2017
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Oct 23rd, 2017
Oct 24th, 2017
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