exam Maths Puzzle Numerical Ability

A) When using elimination to solve a system of equations, how would you recognize it has not solution?

B) Infinitely many solutions?

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exam Other Question

A life saver has a 3cm diameter, a 1cm diamter hole and has 1/2 cm height. Find the volume and total surface area of the life saver. (Just like the candy lifesaver) That is what the pic looks like.

Thankyou Shelly Write an equation of the Line 1 passing through (3,-4) that is parallel to the Line II 5x-3y-9=0. Does the line I pass through the point (6,7)? Does the line II pass through the point (6,7)?