Answer:
171 newspapers.
Step-by-step explanation:
Problems of normally distributed samples are 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:

How many newspapers should the newsstand operator order to ensure that he runs short on no more than 20% of days
The number of newspapers must be on the 100-20 = 80th percentile. So this value if X when Z has a pvalue of 0.8. So X when Z = 0.84.




So 171 newspapers.
To find 75% of 200, we can multiply two fractions.
75/100 * 200/1
Now, just multiply the numerators and the denominators separately.
75 * 200 = 15000
100 * 1 = 100
Now, divide.
15000/100 = 150
<h3>75% of 200 is 150.</h3>
To find the how many times greater is the storage capacity of a 1-gigabyte flash drive than a 1-megabyte flash drive we have to apply exponent operation.
The storage capacity of a 1-gigabyte is 1000 greater than 1-megabyte flash drive.
Given:
The given exponent for gigabyte is,

The given exponent of megabyte is,

<h3>What is exponent rule?</h3>
- The power rule of exponent rule is defined as if raise the a number with exponent to power then we will mulitply exponent to the power times.
- to change the negative exponent into a positive we have to invert the base.
Calculate the storage capacity.

Thus, the storage capacity of a 1-gigabyte is 1000 greater than 1-megabyte flash drive.
Learn more about exponent rule here:
brainly.com/question/2254060
Answer:
d
Step-by-step explanation:
I took the test. Hope I could help!
61 miles per hour, because if you divide 183/3 you will get 61.