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New Device measures fun!


Who said that statistics were boring? Check this cool gadget out… “A rugged activity tracker that purports to ‘count fun’ (not calories) and measures movements unique to action sports like surf, skate, snow, moto, MTB, BMX, and the likes. It’s built to withstand snow, surf, dirt, and hard pavement knocks and is a modular device […]

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NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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