exam Maths Puzzle Numerical Ability

I need help on how to do complementary/supplementary angles and if you can give me some example that will be great.

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exam Other Question

what are 2 functions for the following equation:

((x+1)/10)^2 + (y/5)^2 = 1 At the beginning of the Alay Lakad, Rizza and Angel are 30 km apart. If they leave at the same time and walk in the same direction, Rizza overtakes Angels in 60 hours. If they walk towards each other, they meet in 5 hours. What are their speeds?