Answer:
45,135,315,225
Step-by-step explanation:
2cos^2x = 1
Divide each side by 2
cos^2x = 1/2
Take the square root of each side
sqrt( cos^2 x) = ±sqrt (1/2)
cos x =±sqrt (1/2)
Make into two separate equations
cos x =sqrt (1/2) cos x = - sqrt(1/2)
Take the inverse cos of each side
cos ^-1 cos (x) = cos ^-1 (sqrt (1/2)) cos ^-1 cos (x) = cos ^-1 (-sqrt (1/2))
x = cos ^-1 (sqrt (1/2)) x = cos ^-1 (-sqrt (1/2))
x = 45 +360 n x = 135+ 360n
x = 315+360 n x =225+360n
Between 0 and 360
45,135,315,225
Answer:
The confidence interval for the difference of proportions of the population p2003-p2008 is 
.
Step-by-step explanation:
In this question we have to construct a 90% confidence interval (CI) for a difference of proportions.
The proportion for 2003 is 
.
The proportion for 2008 is 
.
The difference in proportions is 
.
The standard deviation of the difference of proportions can be estimated as:
For a 90% CI, the z-value is 1.64.
Then we can construct the CI as
Answer:
heyy im bored too
Step-by-step explanation:
thx for free point i guess lol
Answer:
use a calculator
Step-by-step explanation:
A function assigns the values. A function is a rule that assigns each value of the independent variable to exactly each value of the dependent variable.
<h3>What is a Function?</h3>
A function assigns the value of each element of one set to the other specific element of another set.
The given statement can be completed as given below.
A function is a rule that assigns each value of the independent variable to exactly each value of the dependent variable.
Learn more about Function:
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