3 years ago

E equations. 2. 12 = 71-\5p+91

Mathematics

1 answer:

Shkiper50 [21]3 years ago

4 0

Answer: 30

Step-by-step explanation:

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Jolyn, a golfer, claims that her drive distance is not equal to 222 meters, on average. Several of her friends do not believe he

Troyanec [42]

Answer:

0.29

Step-by-step explanation:

z-score is given by the formula:

z=(μ-M)/σ where

μ is the hypothesis drive distance, which is 222
M is the mean sample drive distance
σ is the standard deviation of the sample drive distance

Therefore

z=(222-218)/14≈0.29

3 0

4 years ago

Johns car averages 28 miles per gallon. how far can her drive on 8.25 gallons

Lilit [14]

Answer:

Step-by-step explanation:

This is a unit problem.

$\frac{28mpg}{8.25g}$

If you notice in that ratio, there is a "g" in both the numerator and the denominator which will cancel out, leaving you only with the label of miles, which is what you are looking for (since "how far can she drive..." is a distance thing). 28 then only needs to be divided by 8.25 to see how many miles this is.

$\frac{28mpg}{8.25g}=3.3939393939$ miles which, in an improper fraction, is