exam Maths Puzzle Numerical Ability

Solve system by graphing: y = -2/3x

2x +3y = 5

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exam Other Question

combine like terms and write in descending order
x-15x^2 + 19x -22x^3
The width of rectangle is 1/2 its length. The perimeter of the rectangle is 24 inches. What are the width and length of the rectangle?