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Mathematics 13 Online
OpenStudy (anonymous):

Can someone please help me.The equation h=7cos (pie/3 t) models the height h in centimeters after t seconds of a weight attached to the end of a spring that has been stretched and then released. A. solve the equation for t. B. Find the times at which the weight is first at a height of 1cm, of 3cm and of 5cm above the rest position. Round your answers to the nearest hundred. C. Find the times at which the weight is at a height of 1cm, of 3cm, and of 5cm, below the rest position for the second time. Round your answers to the nearest hundredth.

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