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Mathematics 7 Online
OpenStudy (anonymous):

can someone help me with this please? i will MEDAL AND FAN!! picture posted below

OpenStudy (anonymous):

OpenStudy (anonymous):

@campbell_st

OpenStudy (campbell_st):

look at the picture... |dw:1400099414406:dw| the amplitude is 13.... and the centre of the curve is 70 you just need to work on the period...

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