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Wow – that’s a heap of tweets!

March2

Six thousand tweets are sent every second, which corresponds to five hundred million tweets a day. Every sixty seconds, 510,000 comments are posted on Facebook. Add the 1.7 billion websites on the internet and the information exchanged on social media sites such as WhatsApp (one billion users a month), WeChat (697 million users a month), […]

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Relative cost of some common items…

September4

This graphic (and the following one) caught the attention of H3. They are both sourced from the Huffington Post here and illustrate the incredibly high cost of printer ink, especially in relation to other expense items. Note – prices in the US market. And, buy just changing the spelling of some common words from the […]

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Mathematics Words – Great Reference for all Students!

June16

This site offers you a really useful 1-stop shop to look up what those confusing mathematics words mean:

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10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

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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