Mathematics: Post your doubts here!

[Layla..]

Help! My Simple Interest ans is coming "184.5" While my Compuond Interst ans is "1653.5"! I've doubt in S.I
View attachment 41900

Lol it's perfectly fine, you just add [184.5 + 1500] - 1653.5

 

[Mavilda Bucket]

 

[Layla..]

I got the first one after some thinking

But the second part (9 cii) I can't seem to figure it out. It's not simultaneous equations cuz I looked at the mark scheme and atleast understood that much. Could you try solving it? I'd be ever so grateful! It's for 5 whole marks! :/

Ok I'll solve it ^_^

 

[Hello090078601]

Ok I'll solve it ^_^

Thank you! and maybe it is simultaneous, Idk I suck at math

 

[My Name]

http://2.bp.blogspot.com/-G1sUdTUX1vM/UZ3I13NrCsI/AAAAAAAABvU/wbNPgqa8AXg/s1600/DSCN0213.JPG

 

[My Name]

Yes? You said Q 9 of P43 O/N 2013... :/

i am very sorry there as a mistake !
just forget it
plz if u can solve these
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Mathematics (0580)/0580_w13_qp_42.pdf
question 1 part c
question 3 part b
question 4 part b and d
question 5 part b ii
question6 part b ii steps

question7 part b iii
question 10 part v

PLEASE AND THANKU!

 

[My Name]

the thing that i don't get is why do we divide it by 2???

the thing is that numberi s not exact
it is betweeen a range
eg nearest to 1 cm

 

[Ameena Eesa]

explain me d triagle ka na

ka na?

 

[My Name]

its urdu/hindi for <the one>
she means to say explain the triangle one!

ka na?

 

[Ameena Eesa]

its urdu/hindi for <the one>
she means to say explain the triangle one!

lol, i thought shes calling me cock-eyed............ lol.......... like for the male gender- 'kana'

 

[Layla..]

Thank you! and maybe it is simultaneous, Idk I suck at math

It's easy
And yes, its simultaneous equation lol
So 1st equation is p+ q = 8.5 so q =8.5-p
2nd would be 1/2 (2)^3 + p(2)^2 + 2q = 27
So.... 4 + 4p +2q =27
And 4p + 2q = 27-4
4p+ 2q = 23

Now
4p + 2(8.5- p) = 23
4p + 17 - 2p =23
2p =6
p = 3

For q use the equation!!
8. 5 -p
sp 8.5- 3 = 5.5

 

[Hello090078601]

It's easy
And yes, its simultaneous equation lol
So 1st equation is p+ q = 8.5 so q =8.5-p
2nd would be 1/2 (2)^3 + p(2)^2 + 2q = 27
So.... 4 + 4p +2q =27
And 4p + 2q = 27-4
4p+ 2q = 23

Now
4p + 2(8.5- p) = 23
4p + 17 - 2p =23
2p =6
p = 3

For q use the equation!!
8. 5 -p
sp 8.5- 3 = 5.5

Um, How'd you come up with the second equation? How did you figure out it was equal to 27 and n is 2?

 

[muraqba]

plz open this and solve question 4 and qyestion 9
it would surely be a great help

 

[Layla..]

Um, How'd you come up with the second equation? How did you figure out it was equal to 27 and n is 2?

They said used a value for n so I took n as 2 and the value was 27 because it is for the first x equation(S) if you read the sentence correctly so it was 18 + 9

 

[Hello090078601]

They said used a value for n so I took n as 2 and the value was 27 because it is for the first x equation(S) if you read the sentence correctly so it was 18 + 9

Ohhh, I get it now! Thank you!

So I can also take 3 as n but that'll be equal to (18+9+30) right?

 

[Layla..]

Ohhh, I get it now! Thank you!

Pray for me

 

[My Name]

lol, i thought shes calling me cock-eyed............ lol.......... like for the male gender- 'kana'

LOL!

 

[DeadlYxDemon]

Help!! "2013 O-N - 42 - Q3"

 

[shadil.me]

Help!! "2013 O-N - 42 - Q3"
View attachment 41933

 

[shadil.me]