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Parking illegally makes mathematical sense…huh?


An article from cnet breaks this almost mathematical news, which just might be useful when you have finished Drivers Ed?

“Anne Wojcicki, wife of Google’s Sergey Brin, says that she’s looked at the numbers and taking the risk of getting a ticket is worth it.

We’re always calculating the odds.

Chances she’ll love me in five years’ time? Thirty percent. Chances he’s concealing that he’s a menace to society? Sixty percent.

anne_DataBut now that we live in the Kingdom of Nerd, every number tells a story (H3 emphasis) and offers an indication of how to live. Anne Wojcicki, the CEO of genetic testing company 23andMe and wife of Google’s Sergey Brin, revealed that she’s always had something of a tightfisted streak. She described how she was once so enamored of the fact that there was free carrot juice in her office that she had to drink as much as she could. That would be around 32 ounces a day for one whole year. She claims to have turned orange.

Some will be green that she now has an enviable lifestyle and a bank balance that must be enormously in the black.

Wojcicki insists, though, that she is still mostly miserly, save for a couple of luxuries. One is paying for short-term parking at airports. It makes getting home far quicker and easier.

The second is an interestingly mathematical calculation. ‘I get parking tickets all the time. We’ve worked out the stats and it’s 50-50 odds of getting a ticket and the cost versus time saved means I can accept it.'”

H3 note: Which just goes to show that, rather than a mathematical decision, this might well be one influenced by the ability to pay parking fines without severely affecting the wallet?

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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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