exam
Maths Puzzle
Numerical Ability
Solve the system by addition
x+y=1
x-y=3
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exam Other Question
How do I complete the square to find the vertex form of the following equation:
-2x^2 - 6x + 7
Thank you very much.
The ratio of the complement of an angle to its supplement is 1 to 4. Find the measure of the angle.