Answer:
a^-7
Step-by-step explanation:
we need to know that :
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so the ans is

by the way

Roughly 30 minutes to fill the bathtub due to vaporization.
Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.
I pretty sure the answer is 134217728000000000000/17

you just divide 2 by 10, which is
.2