The period is 11
Explanation
Answer:
A. -¼(1+ 2y)
Step-by-step explanation:
-(½y + ¼) = -½y - ¼
-¼(1+ 2y) = -¼ - ½y = -½y - ¼
B is <em>wrong</em>. ¼(2y - 1) = ½y - ¼
C is <em>wron</em>g. -2(¼y - ⅛) = -½y + ¼
D. is <em>wrong</em>. 2(⅛ - ¼y) = ¼ - ½y = -½y + ¼
Is the answer 157.19xy tell me if I'm right
Answer:
84
Step-by-step explanation:
I don't really know how to explain it but I'll try my best
Visualize line AB extending past point A (like it does at point B)
You'll see that 180 ( line AB ) minus 129 is 51
Angle 51 is vertical to the other angle inside the triangle that is unnamed.
Now you have 2 angles.
180-45-51=84
Answer:
See below for answers and explanations
Step-by-step explanation:
<u>Part A</u>
Assuming that conditions have been met for the interval, we use the formula 
where 
represents the sample mean, 
represents the critical value, 
represents the sample standard deviation, and 
is the sample size.
The critical value of for an 80% confidence level with degrees of freedom 
is equivalent to 
Thus, we can compute the confidence interval:
Therefore, we are 80% confident that the true mean age of all customers is between 30.17 and 35.11 years.
<u>Part B</u>
The margin of error is 
