exam Maths Puzzle Numerical Ability

I need help.
Suppose that A^-1=Matrix[2 -1] find A
3 5

Read Solution (Total 0)

exam Other Question

The Family Fine Arts Center charges $23 per adult and $15 per senior citizen for its performances. On a recent weekend evening when 428 people paid admission, the total receipts we evaluate square root of -121 if possible