Answer:
Step-by-step explanation:
(11)²=(6)²+ (y)²
121=36 +(y)²
y² =121 –36
y²=85
66
Step-by-step explanation:
pretty sure it's 66 because the two lengths added together is 66
400 in² = (20 in)²
The area of a square is the square of the side length.
The length of one of the sides is 20 inches.
Use the law of cosines to solve for angle A. Plug your known side length values into the equation a^2 = b^2 + c^2 – 2bc cos A.
Then use the law of sines to find angle B. (Sin A/a = Sin B/b = Sin C/c).
Because the two red angles within B are congruent, divide your angle measure in half.
From there, do the law of sines to solve for x. Good luck!
I hopes this helps
Answer:
The value of the test statistic is 
Step-by-step explanation:
The null hypothesis is:
The alternate hypotesis is:
Our test statistic is:
In which X is the sample mean, 
is the null hypothesis value, 
is the standard deviation and n is the size of the sample.
In this problem:
So
The value of the test statistic is
