## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with medicine

December28

It was one of those nasty family surprises – a family member having an emergency visit to hospital. As the nurse was making the patient comfortable, she was also busy checking the vital stats and noting them down in her log. Her comment was, “It’s all about numbers and I can’t do my job without […]

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### Mathematics and Medicine

September5

It is fascinating that mathematics, especially a branch of mathematics which is basically applied geometry, can help in treating bacterial diseases and cancer! Marco Narajos says, “I hope that this post has given a sense of just how much amazing it is that mathematics affects medicine, especially in medical research. It gives me great pleasure to know […]

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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)?]