exam Maths Puzzle Numerical Ability

The area of a rectangle of length x is given by 3x squared + 5x. Find the width of the rectangle.

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exam Other Question

a train rises 1 meter for every 11 meters it moves along the track. find the angle of elevation of the track to the nearest degree. Solve for X

(x - 4)/2 - 1/5 = (7x + 1)/20