Answer:

Step-by-step explanation:
Given:

We need to reduce the given matrix to reduced echelon form.
Solution:
Make zeroes in column 1 except the entry at row 1, column 1. As we can see all elements in column are already zero. Make zeroes in column 2 except the entry at row 2, column 2.

So,
in reduce echelon form is 
17,000+100+6
I think I hope I'm right
Answer
1/20
Step-by-step explanation:
Compound Probability=Probability1*probability2
Probability that the 1st student chosen is team leader:1/5
The 2nd student chosen is assistant leader:1/4 as one person is already chosen
multiply 1/5 by 1/4 you get 1/20
Based on the information given, there’ll be 8 white t-shirts in the laundry basket so we need to exclude that from the rest since we’re looking for a chance of NOT getting a white t-shirt, that’ll give us 16 out of 24 which is 66%