Qualification > Math
IGCSE MATHS Doubts
NidZ- Hero:
can any1 plz help me wid m/j 2001 q8c
bulono:
URGWNT help needed M/J 2004 question 2 c
ivrytwr3:
Could someone take a look at 0580/03 Oct/Nov 2009 Paper 3 core
Question 4 part c. "Use trigonmetry to calculate the length of BC".
I did:
7 (cos 55)
Which obvioulsy isn't right as that would mean the hym is the shortest side :(
Where have i gone wrong please?!
Thank You!
princess12:
can any1 plz help me wid m/j 2001 q8c
i can not find in my pastpapers
ksitna:
--- Quote from: M'i'D'o on May 18, 2010, 08:33:09 pm ---Can anybody plz solve the question 9 in nov 06 paper 4 and attach it for me...
Inequalities... I HATE IT.. plzz heeelp i'm dying for it......
--- End quote ---
right um the inequalities to start of with
so he works no more than 12 hours
if x was washing cars and y was repairing cycles
that means that when he does both it would take him max. 12 hours
so x+y<=12
for the second one
he spends at least 4 hours so it would be x>= 4
when u plot the points
if the equation was less than
u would shade the right side because it is more than etc.
then for the least u just follow on the graph
(4,4)
and for the most
(6,6)
if u need further explanation do tell :)
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