exam Maths Puzzle Numerical Ability

given that alternate interior angles are congruent prove that alternate exterior angles are congruent

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exam Other Question

Please help me solve by graphing:
3x-y < 2
x + y >2

and

x -2y is less than or equal to 4
x greater than or equal 1 nina can stretch her legs to take 2 steps at one time. how many different ways can she climb the 6 steps on her porch using any combination of 1 or 2 steps?

there are 2 blinkin