exam Maths Puzzle Numerical Ability

Which product would be used to solve the matrix equation below by using inverse matrices?

3 -4 [a] = 6
2 1 [b] 7
_______________________________

a. 1/11 [1 4] [6]

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exam Other Question

simplify:

i^51
Solve the following word problems. Be sure to show the equation you use for the solution.
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