Additional Math Help HERE ONLY...!

[jellybeans]

yeah, if u get more than one value it basically tells u that the particle passes the origin at more than one point, i.e. it moves first in the positive direction and then in the negative direction, and then u have to find the distance travelled in the positive and the negative direction, and theres also one more way to find if the particle goes in the positive direction, if u find the maximum displacement and it comes to a value not equal to ur final displacement, i.e. in this q if the maximum displacement is not -25m then u get to knw that the particle has travelled in the positive direction also, for example in this u get the maximum displacement at t=5, i.e. x=7.5m, thus u get to knw that the particle has also travelled in the positive direction and u can take the movement in the positive direction into account

hahaha, okay! thanks

x - q = px / y

(x - q) / x = (px / y) * (1 / x)

(x - q) / x = p / y

1 - q / x = p / y

y = p / (1 - q / x)

would it works ?

lol sry umm ..checkk teh ms.. 

[J.Darren]

No idea lol, but I don't presume those sort of Qs would appear in this year's paper, somewhat beyond our scope ...

[jellybeans]

No idea lol, but I don't presume those sort of Qs would appear in this year's paper, somewhat beyond our scope ...

LOL? are you sureeeee.. ? hahaha thanks anyways!

[Ghost Of Highbury]

px = xy - qy

qy  = xy-px

qy = x(y-p)

x = (qy)/(y-p)

(reciprocal of both sides)

1/x = (y-p)/(qy)

1/x = y/qy - p/qy

1/x = 1/q - (p/q)(1/y)

1/x = (1/y)(-p/q) + 1/q

  y  =  xm + c 

y = 1/x

x = 1/y

m = (-p/q)

c = (1/q)

[cooldude]

hahaha, okay! thanks

lol sry umm ..checkk teh ms.. 

the first one is impossible, the one above the table, ill show u the explanation (ill go backwards)-->
1/y=-9/px+1/p
reciprocate--> y=-px/9+p
write as single fraction--> y=(-px+9p)/9
cross multiply--> 9y=9p-px
rearrange--> 9y+px=9p

now the first one in the table-->
y=qy/x+p
now just multiply evrything by x ull get it

now the 2nd one-->
y/x=y/q-(p/q)
multiply evrything by q--> qy/x=y-p
cross multiply--> qy=xy-px
rearrange ull get it
 
and blah blah blah

[jellybeans]

the first one is impossible, the one above the table, ill show u the explanation (ill go backwards)-->
1/y=-9/px+1/p
reciprocate--> y=-px/9+p
write as single fraction--> y=(-px+9p)/9
cross multiply--> 9y=9p-px
rearrange--> 9y+px=9p

now the first one in the table-->
y=qy/x+p
now just multiply evrything by x ull get it

now the 2nd one-->
y/x=y/q-(p/q)
multiply evrything by q--> qy/x=y-p
cross multiply--> qy=xy-px
rearrange ull get it
 
and blah blah blah

... which table did you get those values from?  lol

[J.Darren]

... which table did you get those values from?  lol

The marking scheme thingie ...

[Ghost Of Highbury]

Cooldude went backwards, check my post , ive gone forwards. the same thing....

[jellybeans]

the first one is impossible, the one above the table, ill show u the explanation (ill go backwards)-->
1/y=-9/px+1/p
reciprocate--> y=-px/9+p
write as single fraction--> y=(-px+9p)/9
cross multiply--> 9y=9p-px
rearrange--> 9y+px=9p

now the first one in the table-->
y=qy/x+p
now just multiply evrything by x ull get it

now the 2nd one-->
y/x=y/q-(p/q)
multiply evrything by q--> qy/x=y-p
cross multiply--> qy=xy-px
rearrange ull get it
 
and blah blah blah

The marking scheme thingie ...

Cooldude went backwards, check my post , ive gone forwards. the same thing....

OH. okay, THANKS GUYS! thaaaank you so much

[jellybeans]

lol.. hi again
i need help with 8ii) D:
thanks !

[Ghost Of Highbury]

INCOMPLETE Q...post the paper link and ms..

[astarmathsandphysics]

answer to the venn diagram question

[Dibss]

lol.. hi again
i need help with 8ii) D:
thanks !

Check the attachment. Hope it helps =]

[astarmathsandphysics]

it says C intersection d=165000

[Dibss]

it says C intersection d=165000

nope, it says people who don't have both a comp and a dishwasher so that would be everything outside of (C intersection D) i think...
ok, let me go check the mark scheme and i'll get back to you!