exam Maths Puzzle Numerical Ability

solve the system using the linear combination method: 5x+y=6 -5x+3y=-22

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exam Other Question

28. Geometry. For the floor plans given in exercise 27, determine whether the side through the points (2, 3) and (11, 6) is perpendicular to the side through the points (2, 3) and x + 5 = -6/x