Answer:
x =-5 and y = -6
Step-by-step explanation:
In order to get the answer, I used the elimination/addition method
8y-9x= -3 <— I decided to eliminate the y
5y-8x= 10 <— I decided to eliminate the y
5(8y-9x = -3) <— switch up the number of y from the bottom to multiply
-8(5y-8x= 10) <— switch up the number of y from the top to multiply, but have a negative sign to it
So...our new equation will be....
40y - 45x = -15
+ -40y + 64x = -80
________________________
19x = -95
x = -5
8y-9x= -3
8y-9(-5) = -3
8y+45 = -3
- 45 = - 45
8y = -48
y = -6
Part aThe sample size is large enough to use the central limit theorem because it is greater than 30.
Part b.The mean of the sampling distribution is 62000.
The standard error is computed as
Part c.Compute for the corresponding z-score of more than 2700 from the population mean.

Therefore,
Answer:
I think it is A
Step-by-step explanation:
Wouldnt it be 0.2 i think