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Posts tagged with billion

Dance of the Pythagorean Triangles …

October3

You saw it here first, and H3 saw it on its world tour (not quite earning what Ed Sheeran did on his recent tour) but still pretty cool. Now, getting back to Ed, here are the stats: According to The Sun, the pop star paid himself a whopping NZ$33.6 million – the equivalent of $92,000 […]

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A billion trees? Let’s break that down to human levels

November24

In a recent news item a comment was made about reaching a tree-planting target of 1 billion – “With the right incentives and the right conditions, one person could comfortably plant 400,000 trees in a year. So you would need just 250 people planting that amount every year for a decade (10 years) to reach […]

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Having fun in a knowledge economy!

March23

“The NCAA men’s basketball tournament began last Thursday.  It is estimated that more than 60 million Americans have completed tournament brackets predicting the winners and losers.  Across the country, employees are spending workday time monitoring games, and discussing predictions and results with colleagues.  Many are waging bets. According to one estimate, the cost of lost wages […]

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Big Data = Big Maths

October30

According to IBM we create 2.5 quintillion bytes of data every day – taking pictures, posting, texting, tweeting, typing up docs, making videos, sending GPS signals, swiping credit cards, etc. That is a HUGE amount of data and, as Google has shown us, the control and analysis of much of that data = economic benefit. […]

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11 billion miles on the clock and still going strong

September6

Yes, intrepid travellers, our vehicle goes 1 billion miles every three years. Big numbers, even for mathematicians like you! “What is it” you may ask and, “Where is it going?” Good questions and an equally good answer. Check out the link here.

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How high is a stack of $100 bills in a $billion??

May27

This caught my attention in one of the dailies; “Imagine a $100 bill,” I began. “Now imagine a wad of them from the bank wrapped up tight. There’s a hundred of them. That’s $10,000. Now imagine stacking wads of $100 bills one on top of another… “A hundred wads and you have a metre. That’s […]

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How long to spend these billions?

April11

If you spend $1,000 each day, how long will it take to spend Apple’s 97 billion? Hint: 1 billion = 1,000 million or 1,000,000,000 (and Apple’s value has just reached 600 billion!) Answer is in the Blog Diary 🙂

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Yikes – 25 billion!

March5

Wow! There have now been 25 billion downloads from the Apple Store! That is a huge number and big enough to get the attention of any student mathematician!! The world population is also given below (click on it to see the live population meters). You do the sums…how many downloads would that be per person??

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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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