exam Maths Puzzle Numerical Ability

Determine whether each ordered pair is a solution of the system

(-5,2)
2x+3y=-4
x-4y=-10

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exam Other Question
Consider triangle ABC in the plane where
A=(-1,15)
B=(-6,8)
C=(-27,23)



Find the lengths of the sides of the triangle:
AB=
BC=
AC= If a figure has a base of 3m x 7m for a right solid which is 8m high, calculate the surface area of the solid.