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Maths Puzzle
Percentage
A swimmer takes 100seconds to swim 50m. In 1 years time he has increased it's speed by 25%. Wat is the time he took to swim 50m now.
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Book Other Question
sketch the graph of the equation. Label the vertex
20.{{{y=-x^2+2x-1}}}
how do you graph and solve this quadratic equation
-x2 + 3x - 2 = 0