Answer:
the answer is a
Step-by-step explanation:
i took the test on gogo.net
Answer:
d. 11.6
Step-by-step explanation:
The results of the first die and the second one are independent to each other. The expected value of Z is obtained, therefore, by summing the expected values of both X and Y, because Z = X+Y and X and Y are independent. As a result 
Answer:
2/5
Step-by-step explanation:
Lets x = # of hours Melania works at <span>office clerk
and y = </span># of hours Melania works as a <span>cashier
x + y = 38 so x = 38 - y
13x + 9.25y = 434
substitute </span> x = 38 - y into 13x + 9.25y = 434
13x + 9.25y = 434
13(38 - y) + 9.25y = 434
494 - 13y + 9.25y = 434
-3.75y = -60
y = 16
x = 38 - y so x = 38 - 16 = 22
answer
Melania works at office clerk = 22 hours
Melania works as a cashier = 16 hours
Formula of the line
y=mx+b.
For parallel line slope m is the same, so m= -2.
y=-2x+b.
We need to find b,using the point (3,1).
1= - 2*3+b
b=7
y = -2x +7
Answer is A. y = -2x +7.
