exam Maths Puzzle Numerical Ability

Solve each of the following systems by substitution.
5x-2y=-5
y-5x=3

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exam Other Question

perform long division:
x-1/3x^4+2x^3+2x^2-x-6 Driving down a mountain,Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth.