exam Maths Puzzle Numerical Ability

simplify
5 sqrt 5 - sqrt 20

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exam Other Question
Write the fraction as a percent.

8. 41/50

Any help with this equation would be Greatly</b> appreciated. srry lost my other account password the ones next to each other are all one problem


x=y+1 x+2y=7


3x-y=2 y=2x-9