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Posts tagged with Steve Wozniak

One Apple 1 is very special

October23

At the calculating roots of our high school math courses was a rather crude looking computer called the Apple 1. Guess what? A model of the Apple-1 (above) recently sold for a stratospheric $US905,000 by Bonhams auction house! This was a working model of the Apple-1 and among the 50 models that were assembled by […]

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Woz Was Here and No.5 is Alive!

September21

Yes, dear blog readers – the one and only Steve Wozniak of Apple fame was just a few minutes down the road from my classroom – lined up to buy his new iPhone 5. Without Mathematics it would just be an iPhone…! Go number 5!! (Note: No, I don’t own an iPhone but do love […]

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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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