Sin x = cos (90-x)
90-x = 19
x = 71
The answer is 71 degrees.
Answer:
Step-by-step explanation:
7/12
no. of not prime number/ total no. of number
we know the center of the circle, and we also know a point on the circle, well, the distance from the center to a point is just the radius.
Answer:
median= 6.5
Step-by-step explanation:
6= 2+5+x+1+x+2+7+9/6
summing up the values
26+2x=36
collecting like terms,
2x=10
divide both sides by 2
x= 5
5+1=6
5+2=7
so the numbers are 2 5 6 7 7 and 9
the median = 6+7/2
= 6.5
Answer:
a) 88.89%
b) 84%
c) 75%
Step-by-step explanation:
We are given the following in the question:
Average price = $3.06 per gallon
Standard deviation = $0.06 per gallon
Chebyshev's Rule:
- According to this rule atleast percent of data lies within k standard deviation of mean.
a) minimum percentage of gasoline stations had prices within 3 standard deviations of the mean
We put k = 3
Thus, minimum 88.89% of gasoline stations had prices within 3 standard deviations of the mean.
b) percentage of gasoline stations had prices within 2.5 standard deviations of the mean
We put k = 2.5
Thus, minimum 84% of gasoline stations had prices within 2.5 standard deviations of the mean.
Range of gasoline price:
c) minimum percentage of gasoline stations that had prices between $2.94 and $3.18
We can express $2.94 and $3.18 as:
We put k = 2
Thus, minimum 75% of gasoline stations had prices between $2.94 and $3.18.