exam Maths Puzzle Numerical Ability

Write and indirect proof for the exterior angle inequality theorem, which states that if an angle is an exterior angle of a triangle then it is greater than either of its remote in

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exam Other Question

find values for m and b in the following system so that the solution to the system is (-3,4)

5x+7y=b
mx+y=22

5(-3)+7(4)=13
-6(-3)+4=22

Is this all the steps or am I missing something? i need help figuring this one out.. thanks

Write an equation of an ellipse with the given characteristics.
center(-1,5), vertex (3,5), co-vertex(-1,7)

thank you!