Mathematics: Post your doubts here!

[jumoke kuye]

mistake doing additional math

 

[Mohammed Kamel]

try

http://www.egyptigstudentroom.com/past-papers
justpastpapers.com
maybe some found

Thanks

 

[lucky oye]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s12_qp_21.pdf
Can u help me in this paper question 19

 

[sj0007]

mistake doing additional math

why???????????????

 

[sj0007]

http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s12_qp_21.pdf
Can u help me in this paper question 19

a) PT= PO + OT
-p +t
b) PS + SR = 2t + p
c) OP + PR = p + 2t + p= 2p+2t

 

[sj0007]

iam 100% sure they are sir thought us but i forget them
the questions are there in KARREN MORRISON IGCSE but explanation not clear
also read examination report speaks about them

But i have never heard of them before!!!!!!!!!!!!!!!!!

 

[lucky oye]

I also have another problem
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s06_qp_2.pdf
Can anybody please help in question no 23 of this

 

[lucky oye]

I have a problem
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s06_qp_2.pdf
Can anybody please help in question no 23 of this

 

[fire wall]

someone please solve 0580/O/N/03 question number 9,7a1,8 for me

 

[Faiza Anwar]

neither have I, are u sure they are in the syllabus?

no i never heard about back bearings...

 

[Faiza Anwar]

Q 4d and Q9b(i)and (ii) plzz help me with these questions

 

[Faiza Anwar]

someone please solve 0580/O/N/03 question number 9,7a1,8 for me

which paper please attach the link here..

 

[Faiza Anwar]

Q 4d and Q9b(i)and (ii) plzz help me with these questions

HELPPPPPPPPPP!!!!!!!! plzzzzzzz

 

[sj0007]

HELPPPPPPPPPP!!!!!!!! plzzzzzzz

Q4) d) umm.....for this one if u observe the angle MOB is only 1/4 of the angle AOC which is needed to find the arclength
soo AOC= 4 * 39 = 156
next find the arc length as the radius is given
hope u understand

 

[sj0007]

HELPPPPPPPPPP!!!!!!!! plzzzzzzz

Q9) b)(i) to find the speed u will have to divide the volume by the area ( to get cm/s)
so the volume that is 3000cm3 is filled in one minute
and the area which is pi * 0.74 * 0.74
just divide them

(ii) u will have to imagine the pool as a cylinder with h= 5/10 cm
and V= 12000 cm3
soo subject r and find it
hope u understand this too

 

[Faiza Anwar]

Q4) d) umm.....for this one if u observe the angle MOB is only 1/4 of the angle AOC which is needed to find the arclength
soo AOC= 4 * 39 = 156
next find the arc length as the radius is given
hope u understand

i've never heard about this method.. but can't i just find BON as ab = bc, and bo is common which is the radius so MOB=NOB. and therefore MON = 78, AOC = 360-78 .... i used this method but my answer is wrong. can u tell how u knew tht its 1/4 of AOC and that why is my method giving wrong answer?? are triangles MOB and NOB congruent or no???

 

[Faiza Anwar]

Q9) b)(i) to find the speed u will have to divide the volume by the area ( to get cm/s)
so the volume that is 3000cm3 is filled in one minute
and the area which is pi * 0.74 * 0.74
just divide them

(ii) u will have to imagine the pool as a cylinder with h= 5/10 cm
and V= 12000 cm3
soo subject r and find it
hope u understand this too

thank you very much!! it was really helpful.... can u plzz do me one more favor. what is the concept of these types of questions and how do you know when to apply them so that i'll be able to use that in any other questions as well. thanks a bunch once again GOOD LUCK! plzz do reply its very important cox my teacher didn't teach me any such method and for the other one also.

 

[Faiza Anwar]

any quick revision booklet for maths??

 

[Faiza Anwar]

help in question 7d(iii)

 

[Shada Mohammed]

May june 2010 v22 question 10 explanation needed