Mathematics: Post your doubts here!

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

thanks fotr the help

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Now is it understandable?

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

thanks alot, dude
i got it

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Welcome!

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

now please help me with q2b of the same paper

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0580%20-%20Mathematics/0580_s09_qp_4.pdf
mj09
q2b

The median is the middle number. In this case since the total frequency is 50, the median is the mean of the two middle numbers. Using the table, you can see that the 25th number lies when the score is 2 and the 26 th occurs when the score is 3. => median= (2 + 3)/2 = 5/2 = 2.5.

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

thanks alot man, may allah bless you
plese help me with q5c please if you dont mind
http://www.xtremepapers.me/CIE/Cambridg ... 9_qp_4.pdf

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

http://www.xtremepapers.me/CIE/Cambridge%20IGCSE/0580%20-%20Mathematics/0580_s09_qp_4.pdf
mj09
q2b

The median is the middle number. In this case since the total frequency is 50, the median is the mean of the two middle numbers. Using the table, you can see that the 25th number lies when the score is 2 and the 26 th occurs when the score is 3. => median= (2 + 3)/2 = 5/2 = 2.5.

one small question, the frequency is 50, when you divide it, 25 and 25 is not an even number, so you should take only the 25 term ie 2, why are you taking the 25+26 divide by 2, it shuold be when the frequency divide by 2 comes an even number right?

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

No, it depends on whether the frequency itself is an even number or not!

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

ok thanks, it depend on the frequency
if the frequency was 53 then 53divide by 2
=26.5
meaning 27 term
correct?

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Yes.

 

[KurayamiKimmi]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Hey umm any help on how the heck to figure out sequences ? i can do the easy ones but they really get confusing =/

( paper 4 maths extended )

 

[student92]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

.

 

[Pernee26]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Please solve Q6 b)iii. and part f)
I dont get how the answers came so explain aswell.
Thank you

http://www.xtremepapers.me/CIE/Cambridge IGCSE/0580 - Mathematics/0580_w09_qp_4.pdf

 

[IGCSE28]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

how do we find the inverse of 2x1 matrix ??

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

how do we find the inverse of 2x1 matrix ??

As far as I know, we are only required to find the inverses of (2x 2) non-singular matrices according to the syllabus.

 

[Ramosk95]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

hello ,, i'm stuck on qsn 6 o/n 2007 the qsn asks me to draw accurately but i don't have the height between the two parallel lines in order to draw the line with 30m long and i also don't know the angle between line ab and bd .i can draw it by using trigonometry but i sholdn't use it. so please help
http://www.xtremepapers.me/CIE/Cambridg ... 7_qp_4.pdf

 

[irlzs95]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

can someone help me with Q10 http://www.xtremepapers.me/CIE/Cambridg ... _qp_42.pdf
part cii , how can i make 2 equations with 3 variables ???!!
thaaanks in advance !

 

[Ramosk95]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

can someone help me with Q10 http://www.xtremepapers.me/CIE/Cambridg ... _qp_42.pdf
part cii , how can i make 2 equations with 3 variables ???!!
thaaanks in advance !

okay now make all the possible equations
-33+x=y
x+y=z
y+z=18
then if y=-33+x put it in the second equation which will be x+(-33+x)=z 2x-33=z
then if z =2x-33 put it in the other equation to be y+(2x-33)=18
after all this you will have these 2 equations so u can solve them simultanuously
y+2x=51
y-x=-33

 

[irlzs95]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

thank you
btw i hav the same question as u in the graph u asked in nov 2007 , so i hope someone answers !