exam Maths Puzzle Numerical Ability

Please kindly help me. I couldn't answer this question

Your friend is taking an algebra class that began one week after ours. Post an email to your friend in this discussion q

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exam Other Question
Let A=(0,0) and B=(12,5), and let C be the point on segment AB that is 8 units from A
Find coordinates for C

Thanks! Find the inverse (A^-1) if the following matrix.

A=[3 1]
[-1 2]