## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with definitions

### What is a vertex?

May5

VERTEX: This is a very common word in Mathematics, but not that common in daily use. After all, when did you hear someone outside the classroom talk about a “vertex”? This word has Latin origins and basically means “to turn”. In other words, a vertex is the name given to a turn. We apply this […]

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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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### So, what’s in a definition, like “Calculus”

March13

Funny as it may seem, the study of Mathematics is really the study of a language – the language of letters, words, symbols and numbers. So, it does help to find out what words mean (like the previous post about Calculus and pebbles). Failure to get meaning correct can lead to misunderstanding(s). This might be […]

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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)?]