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Author Topic: Math P2 Oct/Nov 1999 HELP !!  (Read 2229 times)

Q80BOY

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Math P2 Oct/Nov 1999 HELP !!
« on: May 07, 2009, 08:27:02 am »
IGCSE (CIE) Mathematics Paper 2 October/November 1999

(ive attched the paper)

Page 2, Question 2 (Done)



Special thanks to Sweetsh and IG Girl
« Last Edit: May 07, 2009, 08:38:09 am by Q80BOY »
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Offline sweetsh

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #1 on: May 07, 2009, 08:31:41 am »
3(x + 1) >= 5 -x
3x+3 >= 5-x
3x+x >= 5-3
4x >= 2
x >= 0.5
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Offline AS girl

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #2 on: May 07, 2009, 08:33:54 am »
this is ur question Solve
the inequality 3(x + 1) >= 5 -x
first expand the brackets
3x+3 >= 5-x
Put x in one side and the numbers in the other side and flip the sign
3x+x>=5-3
4x>=2
x>=2/4
x>=0.5

Which means that x is bigger or equal to 0.5 ;D
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Offline AS girl

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #3 on: May 07, 2009, 08:37:12 am »
I need help with the same question paper but with no 16!!
I get mixed up when simplifying!
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Offline sweetsh

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #4 on: May 07, 2009, 08:40:56 am »
16) a. 2x4 * 5x
= 10x5
     b. x2/x0.5
=x1.5
     c. ----
=(2x0.5)6
=(2x)3
=8x3
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Offline AS girl

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #5 on: May 07, 2009, 08:49:18 am »
Thanks sweetsh!!
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Q80BOY

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #6 on: May 07, 2009, 08:50:29 am »
i attached the mark scheme if any one needs it  ;)
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Offline sweetsh

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Re: Math P2 Oct/Nov 1999 HELP !!
« Reply #7 on: May 07, 2009, 08:51:16 am »
Good the answers are right.
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