Solve for x and y simultaneously in the following equation
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What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale