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Maths Puzzle
Numerical Ability
Find the axis of symmetry
y=-x^2-x-7
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book Other Question
A boat can travel on a river 7 miles upstream in the same time it takes to travel 9 miles downstream. Find the speed of the current if the speed of the boat in still water is 8 miles per hour.
Square root of 18 + Square root of 12.
I dont have a square root button on my computer..sadly, so hopefully you see what im asking.