The solution is x=-3, y=1, z=-1
Answer:
Step-by-step explanation:
First box:4/52
Second box:4/52
Third box:4/52, 4/52, maybe u combine it
Fourth box:4/52, 4/51
Fifth box:4/52, 4/52 or combine
Sixth box:4/52,4/51
Seventh box:8/52, 8/52, or combine
( hope this helps )
Answer:

Step-by-step explanation:
The computation is shown below:
The numbers of possible results at the time when we drawing in two tries is 9
i.e. shown below:
11, 12, 13, 21, 22, 23, 31, 32, 33
Now the probability is

1) find how many rocks Nellie counted by subtracting 156 from 336
336 - 156 = 180 rocks <- Nellie
2) find how many rocks Pat counted by adding 418 to 336
336 + 418 = 754 rocks <- Pat
3) find how many rocks Nellie and Pat counted by adding 180 and 754 together
180 + 754 = 934 rocks <- Nellie and Pat
4) your answer is 934 rocks, which is B
Hope this helped!