Ulterior exterior angles:
50+2y =180
50+x+5=180 55+x=180
50-50+2y=180-50
2y/2=130/2
y=65
Step-by-step explanation:
third and the yellow one will be the answer
x=11,X=-1/5
Answer:
$2.69
Step-by-step explanation:
The prices of the 3 books are:
$2.50, $4.95, $6
The total is $2.50 + $4.95 + $6 = $13.45
The sale is 20% off.
20% of $13.45 =
= 0.2 * $13.45
= $2.69
Answer: You will save $2.69.
Answer:
5.48% of the people in line waited for more than 28 minutes
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean
and standard deviation
, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.
Mean waiting time of 20 minutes with a standard deviation of 5 minutes.
This means that 
What percentage of the people in line waited for more than 28 minutes?
The proportion is 1 subtracted by the p-value of Z when X = 28. So



has a p-value of 0.9452.
1 - 0.9452 = 0.0548.
As a percentage:
0.0548*100% = 5.48%
5.48% of the people in line waited for more than 28 minutes
<span>If you square a number that is less than 1.
For example, say your number was 1/2
the square of 1/2 is (1/2)^2 = (1/2)(1/2) = 1/4
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