Answer:
Step-by-step explanation:
so what you do is look at the signs so # 3 you take -64 and sub that from -16 but because they are both - signs your going to add HOPE THAT HELPS!
I would need the equations
Answer: Y= 1.6
Step-by-step explanation: 1.6 + 0.4 =2
Answer:
C. 5 weeks.
Step-by-step explanation:
In this question we have a random variable that is equal to the sum of two normal-distributed random variables.
If we have two random variables X and Y, both normally distributed, the sum will have this properties:

To calculate the expected weeks that the donation exceeds $120, first we can calculate the probability of S>120:

The expected weeks can be calculated as the product of the number of weeks in the year (52) and this probability:

The nearest answer is C. 5 weeks.