exam
Maths Puzzle
Numerical Ability
polynomials- find the greatest common factor of the polynomial
15x+45x^2
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exam Other Question
solving equalities: 2x -10 >-10
The intensity I of a television signal varies inversely as the square of the distance d from the transmitter. If the intensity is 25W/m^2 at a distance of 2km, what is the intensit