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[Noorullah Farid]

no

0580 oct/nov 2009 p4, question 8 c , iii)
find the number of students represented by 1 cm square on the histogram, how do we solve these type of questions?

and when they ask us to find the height of other colums by giving one value (in histogram) how do we find it? do we just guess?

no guessing
look 1cm^2 area is 1cm * 1cm
so see how much 1cm in x-axis then how much 1 cm in y-axis then multiply out both

 

[ZaqZainab]

2n^2 +2n ?
12-4=8
24-12=12
12-8=4
a=4/2
a=2
b=8-3(2)
b=2
c=4-2-2
c=0
so 2n^2 +2n

why 4/2 :/
why -3*2
why 2 -2 I am so dumb i have never heard about it :/

 

[Noorullah Farid]

w
hen we will use this?

we don't use it its just to represent a general form of a quadratic sequence

 

[Noorullah Farid]

why 4/2 :/
why -3*2
why 2 -2 I am so dumb i have never heard about it :/

refer this might help you http://www.youtube.com/watch?v=krgVlYE3xBI

 

[wajeehaz]

[

no
no guessing
look 1cm^2 area is 1cm * 1cm
so see how much 1cm in x-axis then how much 1 cm in y-axis then multiply out both

alryt thnkyu! what abt oct/nov 2008 p42 question 6 part b.ii) ?
is there a formula? how do we solve these type of sums?

 

[ZaqZainab]

refer this might help you http://www.youtube.com/watch?v=krgVlYE3xBI

Is this there in text book by David Rayner

 

[Noorullah Farid]

[

alryt thnkyu! what abt oct/nov 2008 p42 question 6 part b.ii) ?
is there a formula? how do we solve these type of sums?

frequency density(height of graph)= frequency/classwidth(the difference between 2 intervals)
so 115/2=57.5 but as height of graph is 11.5 means we divide the frequency density by 5
so 35/10=3.5 3.5/5=0.7
26/2=13 13/5 =2.6
24/6=4 4/4 =0.8

 

[Noorullah Farid]

Is this there in text book by David Rayner

how am i supposed to know

 

[ZaqZainab]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w12_qp_41.pdf question 1 d ii Please i don't like this question

 

[ZaqZainab]

how am i supposed to know

what text book do you use

 

[Noorullah Farid]

what text book do you use

it is by chris pearce

 

[ZaqZainab]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w12_qp_41.pdf question 1 d ii Please i don't like this question

 

[ZaqZainab]

it is by chris pearce

okay

 

[Noorullah Farid]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w12_qp_41.pdf question 1 d ii Please i don't like this question

14/20=0.7 but they gave as 2.8 which means we need to multiply every value by 4 so
5/20 * 4 =1
29/40 *4 =2.9
32/30 *4 = 4.27

 

[Zephlex]

Hey, I'm having trouble with number 2, ii on paper 0580/42 may june 2010. I thought there was no way to get the determinant of a matrix that isn't square? On the marking scheme it says 17​

 

[xpfaddict]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s11_qp_42.pdf
PLEASE ANSWER 7D

 

[xpfaddict]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s11_qp_42.pdf
Question 9C

 

[wajeehaz]

frequency density(height of graph)= frequency/classwidth(the difference between 2 intervals)
so 115/2=57.5 but as height of graph is 11.5 means we divide the frequency density by 5
so 35/10=3.5 3.5/5=0.7
26/2=13 13/5 =2.6
24/6=4 4/4 =0.8

24/6=4 4/4 =0.8 how do we know its 4? i understand that the interval is more than the others

 

[Zephlex]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_42.pdf here's the paper for my question in case you need it

 

[N_Ahmed-97]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_41.pdf
question 8 d-iii
PLEASE !