exam Maths Puzzle Numerical Ability

Find the distance between the lines with the following equations.

3x-y+4=0 and 3x-y=0

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exam Other Question

make w the subject:

U(2)=U(1)e(W/PV) Let P = (-25,0), Q = (25,0), and R = (-24,0). Find an equation for the circle that goes through P, Q, and R. Find at least two ways of showing that angle PRQ is right, and find coordinates for the three other points R that would have made angle PRQ right.