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Posts tagged with 10

Turning 10

December19

A significant milestone in the life of our young granddaughter – turning 10. Double digits. Almost a teenager – perhaps could be called a “ten-ager”? (from Wikipedia: “Ten is the base of the decimal system, by far the most common system of  numbers in both spoken and written language. We assume that ten is the […]

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10!

April30

Yes, iTunes is celebrating its 10th birthday! Click on the image to see a timeline of the incredible growth of this onine music phenomenon. The stats are staggering! On 28th of April, 2003 Apple launched the iTunes Music Store with just 200,000 songs. The launch of iTunes also tapped into a pent-up demand for digital […]

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Post Support

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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