Z-scores (left tail) of a given variable X are calculated by
Z(x)=(x-mean)/standard deviation.
For Mary:
Zm(124)=(124-110)/8=14/8=1.75
For Carrie:
Zc(289)=(289-250)/20=39/20=1.95
therefore
Zc>Zm
Answer:

Step-by-step explanation:
11 is the amount per hour, x stands for the number of hours, and he needs to earn at least 90 dollars.
Is there supposed to be a picture??
Answer:
The system don't have a unique solution
Step-by-step explanation:
We define the problem in different variables:
Dried Fruit is going to be x
Almonds are going to be y
So, in this new terms we have that a small bag (S) and a large bag ( L) are going to be represented by:
- 3x+4y=S
- 4
x+6y=L
If we multiply both sides of the first equation by 1.5 we got this:
- 4
x+6y=1.5S - 4
x+6y=L
Therefore we can notice that the system of equations has an unlimited number of soltions because is a consistent and dependent system.