exam Maths Puzzle Numerical Ability

Solve the following systems. Write answers as an ordered pair.

y-x =5

x+y = -1

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exam Other Question

Sketch the graph of the function- y= 3/x+2 +4 How much 40% acid solution should be mixed with 2 gallons of 60% acid solution in order to get 50% acid solution? Set up an equation to solve.