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Mark the boxes so that the X is preceded by the O? Verify the identity cos(2x)/sin(2x)+2sin^2(x)=1/2(cot(x)-1). Need help? If an object is thrown straight up from the ground, at what velocity does it need to be thrown in order to reach a height of 50 ft? What are the solutions to the equation below? 9x^2+6x+1=8? Adi walks 2 meters every 3 seconds, and Braden walks 1 meter every 2 seconds. This morning Braden left the hours 6 seconds before Adi.?