exam
Maths Puzzle
Numerical Ability
which is an equation of the axis of symmetry of the grapd y=x^2-4x+1?
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exam Other Question
a boat can go 60 mph in still water . it takesas long to go 560 miles upstream as it does to go downstream 640 miles. how fast is the current?
Solve the system by graphing
x + y = 3
x + y = -1