Answer:
Step-by-step explanation:
You cannot add these because they are not like. IF you have a value for x, then the expression could be evaluated at the x value, but you can't add them.
Answer:
C The probability values do not add to 1
Step-by-step explanation:
Given
The above table
Required
Why is it not a probability distribution
In probability, the sum of all probabilities must equal 0.
But in this case:

Because:


Hence:
Option (c) answers this question
Answer:
Yes.
Step-by-step explanation:
A quadrilateral is any polygon with four sides. A rectangle, by definition, is a polygon with four sides and four right angles. Thus, every rectangle is a quadrilateral.
Answer: 
Step-by-step explanation:
since the lines are perpendicular, meaning that 
Answer:
15% of 60 is 9
Step-by-step explanation:
15%= 3/20
3/20*60= 180/20
180/20= 9
15% of 60 is 9
Hope this helps!