exam
Maths Puzzle
Numerical Ability
Prove that for any sets A and B, if A is a subset of B, then A(upside-down U)B = A and A U B = B.
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exam Other Question
The perimeter of a rectangular window is 162 inches. If the height of the window is 80% of the width, find the dimensions of the window.."
Use square roots or factoring to solve each equation.
(8y^2)+(5y)=(2y^2)+(4)