Sum of all interior angles = (n - 2) x 180
Sum of all interior angles of a 18-gon = (18 - 2) x 180 = 2880°
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Answer: 2880°
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Answer:
33.3%
Step-by-step explanation:
Defining:
A: a student plays football
B: a student plays baseball
Data:
P(A∩B): a student plays football and baseball = 0.06
P(A) = 0.18
The probability that a student plays baseball given that he plays football is calculated as follows:
P(B/A) = P(A∩B)/P(A) = 0.06/0.18 = 0.33
C because the square root of 64 is 8
Answer:
Explanation:
Identity: sec2θ=1+tan2θ
sec2(π2−x)−1=1+tan2(π2−x)−1
=tan2(π2−x)
Identity: tan(π2−θ)=cotθ
=cot2x
Answer:
The percentile rank of someone who earns $75,000 per year is the 85th percentile.
Step-by-step explanation:
Meaning of percentile:
When a value V is said to be in the xth percentile of a set, x% of the values in the set are lower than V and (100-x)% of the values in the set are higher than V.
In this question:
Working population of 10,500
8,925 people earn less than $75,000 per year.
8925/10500 = 0.85
0.85*100 = 85
The percentile rank of someone who earns $75,000 per year is the 85th percentile.
