exam Maths Puzzle Numerical Ability

Solve the system by substitution.

x + 4y = -4
3x - 3y = -12

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exam Other Question

Give the domain of the function f(x) = 1/sq rt x-1. Rectangular state: One side of a rectangular stage is 2 meters longer than the other. If the diagnonal is 10 meters, then what are the lenths of the sides?