Mathematics: Post your doubts here!

[Mohammad Ahmad]

em having variant 22 2morow....

what tym ur exam is !?

 

[Mohammad Ahmad]

uae

 

[NIM]

what tym ur exam is !?

2:30 pm indonesian tim..
12:30 pm Pak tim...

 

[Mohammad Ahmad]

[email protected] contact me here !!

 

[NIM]

[email protected] contact me here !!

ok i will try 2morow...

 

[MERIHAN]

whose having variant 22 ?! ! 2moro !?>!

meeeeee

 

[GlitteringLights]

line touching circumference should make the angle of 90...
according to me 90-52=38 so CED =38/2 which is equals to 19...
so CDE=180 (90+19)= 71*2 =142...
thats all

the numbers make sense but why did you divide 38 by 2? wasn't 90-52 giving the value already? the line touching the edge forms the 90 and you just subtract 52? because that's what i did, i got the answer as 38 but ddnt divide further by 2 :/

 

[Mohammad Ahmad]

meeeeee

what tym !>

 

[bluefa1con]

s10 21 #17(c) i keep on getting the wrong answer! >.<
what rule do we use to find angle D? and the marking scheme says CED=19, how do you figure that out as well?
i tried filling up angles but i just cant figrue them out, i always have a problem with these type (the one at edges with no other nearby) is there any basic rule im missing?

now this was a good question
ignore the arc OE

 

[EiadHabib]

Urgent: Math Paper 21 May/June 2011 Question 6????

Can someone just explain in a few words how the answer is 108? Please reply asap my exam is tomorrow

 

[GlitteringLights]

now this was a good question
ignore the arc OE

but they said CED is 19 degrees

 

[bluefa1con]

anyone looking to leak paper GTFO
all papers will start at same time around the world
stop wasting your time here go study

 

[bluefa1con]

but they said CED is 19 degrees

yeah ced is 19 i wrote that in the pic lol

 

[MihirC]

okay,
shear factor formula and matrix?
stretch factor formula and matrix?

if you have f(x) = 2-x
and g(x) = 3x+4

will fg(x) = 2-(3x-4)
or will fg(x) = 3(2-x) - 4
???

confused.

 

[GlitteringLights]

yeah ced is 19 i wrote that in the pic lol

haha i did read that, im so confused atm , ok how did you get the 19 why did you divide 38 by 2 dont you have to do something to the 52?
ugh just write them down in order as you solved it. pleaase

 

[Mohammad Ahmad]

okay,
shear factor formula and matrix?
stretch factor formula and matrix?

if you have f(x) = 2-x
and g(x) = 3x+4

will fg(x) = 2-(3x-4)
or will fg(x) = 3(2-x) - 4
???

confused.

first one is correct !!

 

[bluefa1con]

haha i did read that, im so confused atm , ok how did you get the 19 why did you divide 38 by 2 dont you have to do something to the 52?
ugh just write them down in order as you solved it. pleaase

lol its the simple cyclic rule
the 1st one in the book
angle at centre subtended at centre is twice than that at circumference

 

[MihirC]

first one is correct !!

so the second one is gf(x) ?

 

[InternationationalGuy]

A company makes solid chocolate eggs and their shapes are mathematically similar.
The diagram shows eggs of height 2 cm and 6 cm.
The mass of the small egg is 4 g.
Calculate the mass of the large egg.

I need help with this question. Is there some kind of formula for an eggshape or something?? Please help me and explain to me step by step.
http://www.xtremepapers.com/CIE/Cambridge IGCSE/0580 - Mathematics/0580_s11_qp_21.pdf<------------- This paper question 6

The markingscheme says the answer is 108 and i dont know how it is??​

 

[GlitteringLights]

lol its the simple cyclic rule
the 1st one in the book
angle at centre subtended at centre is twice than that at circumference

yeah ...*sigh* y'know what, i'm just gonna accept it for what it is. idc why we dont subtract the 52 or wtevr. so yeah. i wasted too much time on this.
anyways thanks a bunch! god bless you and i hope you do get ur distinction