A research group at Nike decides to survey NCSU students for their preferences in clothing brands. They divide all students into
1 answer:
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Answer:
x1=-4/5, x2=18/5 and x3=7/5
Step-by-step explanation:
you can do linear combination between the rows:
2nd row=R2-3R1 and 3th row=R3-2R1
3th row=(3R2-R3)/15
1st row=R1+3R3 and R2-11R3
x1=-4/5, x2=18/5 and x3=7/5