Answer:
cos 25° = X/11
and
sin 65° = X/11
is this good enough or do you need more workings?
I graphed the given points and used Pythagorean theorem to get the value of each side of the rhombus.
Each side of the rhombus served as the hypotenuse of the imaginary right triangle formed in the graph. The diagonals formed are mutually bisecting and have cut each diagonal in equal parts.
Pls. see attached graph.
Answer:
The 95% confidence interval for the mean score is:
∈ 
Step-by-step explanation:
We want to estimate the population mean, that is, the average score of all the subjects.
An estimator for the population mean μ is 
Since the sample size is
then we use the statistic
with
degrees of freedom
The confidence interval for the mean is:

Where
is the average score of the sample
is the standard deviation of the sample
is the sample size
for a confidence level of 95% and 26 degrees of freedom
Then confidence interval is


∈ 
Answer:
D
Step-by-step explanation:
This line goes through the point (0,0): the origin.
Hope this helps!