2/5, the formula is art over swimming, 16/40, then simplify 2/5
ANSWER

EXPLANATION
The given expression is

The middle radical contains a perfect square.



Note that:


Answer: -4n3+12n2+7n-9
Step-by-step explanation: it basically the opposite sign (positive or negative) switched, and the order backwards. hope that helped
Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg
Step-by-step explanation:
Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.
Let
be the population mean .
We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.
i.e. Null hypothesis :
Alternative hypothesis for two tail hypothesis has sign (≠).
i.e. Alternative hypothesis : 
∴ The hypotheses for a two-tailed test of the claimed potassium content:
H0: μ = 140 mg vs. H1: μ ≠ 140 mg
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