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water waves

when water waves pass a log in the water, a smooth area of water is created behind the log.  when the same water waves pass a blade of grass growing in the water there is no smooth area of water...

How fast was the stream flowing?

A girl is swimming downstream. In still water she can swim at 2km/h and the river is flowing with her. She covered a distance of 12km in 2h 24min. How fast was the stream flowing?   a...

Quadratic formula help

Find the zeros of each function by using the quadratic formula.  1.) f(x)=3x^2-10x+3 2.) p(x)=2x^2-7x-8 3.) r(x)=x^2+c+1 4.) g(x)=x^2-x-5 Find the type and number...

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