Here is your answer. In the first bracket it's your X1 and Y1 and second bracket it's your X2 and Y2
Since a and b are parallel, and c and d are parallel, if you put 3 diagonal from 1 as a vertical angle, it will be true. (hope I could help)
Answer:

Step-by-step explanation:
Given: Breakdown of Monthly Budget
Required
Determine the equation that shows minimum earnings in a year
First, we need to get the sum of the given list of budgets:


The are 12months in a a year; So, the yearly budget (y) is:


i.e.

84 degrees.
The two angles are alternate interior.
Answer:
a) 
b)
deviations
c) 
d) For this case since we have that z>2 we can consider this value as unusual, since is outside of the interval considered usual.
Step-by-step explanation:
Assuming this complete question : "Helen Mirren was 61 when she earned her Oscar-winning Best Actress award. The Oscar-winning Best Actresses have a mean age of 35.8 years and a standard deviation of 11.3 years"
a) What is the difference between Helen Mirren’s age and the mean age?
For this case we can do this:

b) How many standard deviations is that?
We just need to take the difference and divide by the deviation and we got:
deviations
c) Convert Helen Mirren’s age to a z score.
The z score is defined as:

And if we replace the values given we got:

d) If we consider “usual” ages to be those that convert to z scores between –2 and 2, is Helen Mirren’s age usual or unusual?
For this case since we have that z>2 we can consider this value as unusual, since is outside of the interval considered usual.