## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with coffee

### Is there a difference between Logic and Mathematics?

November13

Yes, there is a difference between Logic and Mathematics. David Joyce, Professor of Mathematics at Clark University makes the distinction like this – “Mathematics studies numbers, geometry, and form.  Those require definitions and axioms to characterize the subjects of study.  Logic is used to prove properties based on those definitions and axioms. Logic can also […]

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### The Magic of Number 9 and Coffee!

September10

Does this number 9 seem to be smiling at you? Well perhaps it is! At least it doesn’t look sad and there is a smile in the middle after all. “In eight studies published from 1987 to 2004, prices ending in the magic number nine (\$1.99, 49 and so on) boosted sales by 24 per […]

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### Welcome to 2015

January1

2015 (MMXV) is the 2015th year of Anno Domini (“in the year of the/our Lord”, abbreviated AD) designations, the 15th year of the 3rd millennium, the 15th year of the 21st century, and the 6th year of the 2010s decade. Because the world is divided into Time Zones, we were able to celebrate the New Year first […]

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#### Post Support

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)?]