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Math P2 Oct/Nov 2000 HELP !!!

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Q80BOY:
IGCSE (CIE) Mathematics October/November 2000

(ive attached the paper)

Page 4, Question 10 (Done)

Page 10, Question 22, Part (c) (Done)


Special thanks to DE, Astarmathsandphysics and Aishath

MissDE:


See, X>= 4.8

so  the answer might be {1,2,3,4}

not sure thu..

Q80BOY:

--- Quote from: DE on May 06, 2009, 01:45:16 pm ---

See, X>= 4.8

so  the answer might be {1,2,3,4}

not sure thu..

--- End quote ---

Thanks for the help, but how did we get 4.8 ??

astarmathsandphysics:

--- Quote from: Q80BOY on May 06, 2009, 01:33:30 pm ---IGCSE (CIE) Mathematics October/November 2000

(ive attached the paper)

Page 4, Question 10

Page 10, Question 22, Part (c)

Total number of questions: 2

I really hope u guys can help me out !!!  ;D

--- End quote ---

10)7 – 5x> – 17
 7+17>5x
5x<24 so x<4.8
22c)f(g(x))=3-2g(x)=3-2(x+1)/4=(12-2x-2)/4=(5-x)/2

MissDE:
7-5x>= -17

-5x>=-17-7

-5x>= -24

divide by 5 and turn the sign (as u divide by nigative)...

Got it??

Feel free to ask if u don't understand..

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