Qualification > Math

IGCSE MATHS DOUBTS HERE !!!!

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SauD~:

--- Quote from: ~ The Golden Girl ~ on January 21, 2011, 02:13:06 pm ---a] 68/80 * 100 = 85 %

b] 72 -> 60
     x  -> 100

x = (72*100)/60 = 120 marks.

I hope I helped =]

--- End quote ---
in brief way for part b)

72 = 60/100* x
so the 100 moves to right side
so it comes as 72*100 = 7200
7200 = 60*x
then,
7200/60 = x
120 = x
done :D

SauD~:
A piece of cake question.. :-[

What is acute angle? 

Thanks,

elemis:

--- Quote from: $~SauD~$ on February 15, 2011, 10:46:03 am ---A piece of cake question.. :-[

What is acute angle? 

Thanks,

--- End quote ---

Any angle less than 90 degrees.

SauD~:

--- Quote from: Ari Ben Canaan on February 15, 2011, 11:09:17 am ---Any angle less than 90 degrees.

--- End quote ---
hmm, ok, but what if there is a question
"measure the acute angle if the diagram"
so which angle will we take when both are acute angle.. :-\

The question number is 18th..

Vin:
Theres just one acute angle between the two lines you draw :/

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