Find X,y,z,u,t,v Such That

Q69: (a)If A is the coefficient matrix of

Q70: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q71: Find the inverse matrix of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg"

Q72: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q73: Write a diagonal matrix of size 3

Q75: If <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If ,then

Q76: If A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="If A

Q77: Let A = <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6578/.jpg" alt="Let A

Q78: An electronics store has 35 televisions,15 VCRs,and

Q79: If A is a 3 × 5