Jason ran 7/8 of a mile in 12 minutes. How many miles can Jason run in 1 hour?
2 answers:
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Answer:
A
Step-by-step explanation:
(f - g)(x) = f(x) - g(x)
= -
Since both fractions have a common denominator of 3x, then subtract the numerators leaving the denominator, that is the numerators simplified
2x + 6 - ( - 8)
= 2x + 6 - + 8 = 2x -
+ 14
Hence
f(x) - g(x)
= → A
Answer:
68.26% of regular grade gasoline sold between $3.33 and $3.53 per gallon
81.85% of regular grade gasoline sold between $3.33 and $3.63 per gallon
2.28% of regular grade gasoline sold for more than $3.63 per gallon
Step-by-step explanation:
Problems of normally distributed samples can be solved using the z-score formula.
In a set with mean and standard deviation
, the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
What percentage of regular grade gasoline sold between $3.33 and $3.53 per gallon?
This is the pvalue of Z when X = 3.53 subtracted by the pvalue of Z when X = 3.33. So
X = 3.53
has a pvalue of 0.8413
X = 3.33
has a pvalue of 0.1587
0.8413 - 0.1587 = 0.6826
68.26% of regular grade gasoline sold between $3.33 and $3.53 per gallon
What percentage of regular grade gasoline sold between $3.33 and $3.63 per gallon?
This is the pvalue of Z when X = 3.53 subtracted by the pvalue of Z when X = 3.33. So
X = 3.63
has a pvalue of 0.9772
X = 3.33
has a pvalue of 0.1587
0.9772 - 0.1587 = 0.8185
81.85% of regular grade gasoline sold between $3.33 and $3.63 per gallon
What percentage of regular grade gasoline sold for more than $3.63 per gallon?
This is 1 subtracted by the pvalue of Z when X = 3.63. So
has a pvalue of 0.9772
1 - 0.9772 = 0.0228
2.28% of regular grade gasoline sold for more than $3.63 per gallon