natebarr17
27.07.2021 •
Mathematics
A 178 students were surveyed on their weekly exercise routines. The average was 140 minutes with a standard deviation of 40 minutes. Mike exercise half the time as an average student. What percent of the population exercises more than Mike does?
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Ответ:
$1.25
Step-by-step explanation:
10b + 4m = 13
10(0.80) + 4m = 13
8 + 4m = 13
4m = 13 - 8
4m = 5
m = 5/4
m = 1.25 muffins cost 1.25 each