Mathematics: Post your doubts here!

[AAnsarii]

der u go. it was easy

nyc xplaination..thx

 

[AAnsarii]

how do you solve these questions?
1. The volume of the planet Uranus is 64 times the volume of the planet Earth.
Assuming that Uranus and Earth are geometrically similar, calculate the ratio of
Surface area of Uranus : Surface area of Earth in the form n : 1.
AND
2.The speed of light is 300 000 kilometres per second.
(a) Write 300 000 in standard form.
Answer (a) ......................................................... P I
(b) The nearest star, Proxima Centauri, is 4.2 light years from the Sun. One light year is the distance
light travels in 365 days. Calculate the distance of Proxima Centauri from the Sun.
Give your answer in kilometres in standard form.
Answer (b) ................................................... km 111
FROM A PAST PAPER

idk about 2(b) i thk d ans wud b diff... even d moon is more dan sm 3000 times more than 111km chk d ms 1s again

 

[AAnsarii]

thanks a lot.... however, I'm not so clear about how you got the two 60*60 in your working, under questoin two

 

[AAnsarii]

I wish they would attach our ans sheets wid r results online

 

[Saahil Parikh]

Thanks bro
n u appearing 4 ig's? all d best...gave mine last term...

ur welcome..

thanks bro.. currently going on

 

[sparsha.mehta]

Hieeeee
how was ur math paper??????

 

[sparsha.mehta]

tx 4 d ans... (advice, dnt tk 2 ur heart) wud b nice if ud xplain, sp others
ask me y???

​

ive already done ig maths alhamdulillah​

Oooooo

 

[sparsha.mehta]

Oooooo

I just calculated on paper and wrote the answer

 

[Loren M]

I have doubts in question 6 a (iv) paper 41 Oct/nov 2010.
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w10_qp_41.pdf

 

[Ahmed Nasser]

guys hw i can get the cumulative frequency ??

 

[diamondsky]

I have doubts in question 6 a (iv) paper 41 Oct/nov 2010.
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w10_qp_41.pdf

ratio = 1:32(for length)
so for litres u gotta cube it
=>1:32768
=>0.02:x
x=0.02 x 32768
= 655.36

 

[diamondsky]

guys hw i can get the cumulative frequency ??

http://www.astarmathsandphysics.com...quartiles_interquartile_range_and_median.html

 

[Ahmed Nasser]

http://www.astarmathsandphysics.com...quartiles_interquartile_range_and_median.html

thnx man

 

[Toomuch1995]

Paper 4 (math 0580)
May/June 2003
question 3 (d)(ii)
question 4 (d) and (e)

 

[diamondsky]

Paper 4 (math 0580)
May/June 2003
question 3 (d)(ii)
question 4 (d) and (e)

3.d.ii) 1 - 0.67(Damon finds 2 stop signals)
=>0.33
4.d) u need d graph fr it dude
e)u need 2 draw a tangent...wats so tough in dat part

 

[sparsha.mehta]

i'm not getting 4(ci)
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w11_qp_42.pdf
plzzzzzzzzzz tell me hw to solve!!!!!!!!!!!

 

[Sunita Singh]

i'm not getting 4(ci)
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w11_qp_42.pdf
plzzzzzzzzzz tell me hw to solve!!!!!!!!!!!

even i'm nt gettttting this

 

[pooja9897]

even i'm nt gettttting this

i'm not getting 4(ci)
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w11_qp_42.pdf
plzzzzzzzzzz tell me hw to solve!!!!!!!!!!!

Well, its easy.... See the lenght is 30 right and the diameter is 5 so 6 biscuits will fit in there and the breath is 20 so 4 biscuits of diameter 5 will fit in..... Then you multiply the 6 with 4 to get the area coverd which is 24.........

 

[sparsha.mehta]

Well, its easy.... See the lenght is 30 right and the diameter is 5 so 6 biscuits will fit in there and the breath is 20 so 4 biscuits of diameter 5 will fit in..... Then you multiply the 6 with 4 to get the area coverd which is 24.........

Oooo i made it complicated by considering volumes and.area ....thanxx

 

[pooja9897]

Oooo i made it complicated by considering volumes and.area ....thanxx

I made i complicated too, but looking at 1 mark i thought it was supposed to be easy!!! !!! And no problems..... !!!