yeah I got similar numbers but they were smaller so I initially got 1/2.25 but I scaled it up to 100/225 and simplified it down to 4/9. Other people in my class said it was 1/4 because the small sphere was a quarter of the larger ones but idk tbh. There are a variety of answers, I'm sure you got at least a few Marks for working out.

Reply 404

LegitDragoNinja

Original post by Littlegeekgirl_

For the proof one did you do it algebraically or just insert different numbers?!?!?

Which one there were 2 proof questions.

Reply 405

rheaishere

yeh i did that aswell like 2n=even 2n+1=odd
even=2n^2-2n can be factorise 2(n2-1)
odd=(2n+1)^2 -(2n+1) = 4n^2 + 4n + 1 - 2n -1
= 4n^2 +2n
which can be factorise = 2(2n^2+n) or something like that?????????????????

Original post by LegitDragoNinja

For the first proof question I did a case by case proof - where case 1 was odd and case 2 was even - both ended up being divisible by 2.
For the second proof u had to work out fg(x) and 2gf(x) and then minus one from the other.

Reply 406

jozefinaa

yessss

Original post by Truzerx

Anyone else get h=600/0.5*√t

Reply 407

Ismailyasin69

F(x)= x-1/3x I think

Original post by shyxm

what did people get for the inverse functions question?

Reply 408

rheaishere

Original post by Truzerx

Anyone else get h=600/0.5*√t

yeh i got that and i think some people simplified to 120/sqrtT

Reply 409

Alexb1234

Original post by m.crocombe

What did everyone get for that algebraic ration question where you had to find the values for X?

Like -1 and 2.5 I think

Reply 410

Year10Studentt

Yes!

Original post by Truzerx

Anyone else get h=600/0.5*√t

Reply 411

mohamad177

Guys you know the volume of cone and hemisphere question?
I made a mistake by using the diameter instead of the radius . . .
but I did all the working out, do u think I may get like 1 or 2 marks ?

Reply 412

Sireniccc

0.4/0.4
60 total
600g
2 packs of butter
-6, -1 for the Vector Q
80 for the estimate Q
1/25 for 5^-2
8.5 for the rectangle
n(n-1) for the prove Q
root 3/81 for the surds question
h = 60/0.5 root(t)
Green = 9, Red = 12 - solved using a prob tree. pretty sure people will lose marks if they just did trial and error
tan/cos/sin Q - 1/2
48 for the volume Q
I got 3 and 8 for a/b, as I'm pretty sure they just want the number in a/b and not including the positive/minus signs
then the coordinates was (3,-8)

(edited 4 years ago)

Reply 413

LegitDragoNinja

you'll probs get 3 if everything else was correct due to ecf marks.

Original post by mohamad177

Guys you know the volume of cone and hemisphere question?
I made a mistake by using the diameter instead of the radius . . .
but I did all the working out, do u think I may get like 1 or 2 marks ?

Reply 414

Souber23

Finally yes I put different numbers and I’m not sure if I get the marks

Original post by Littlegeekgirl_

For the proof one did you do it algebraically or just insert different numbers?!?!?

Reply 415

Sireniccc

Original post by Souber23

Finally yes I put different numbers and I’m not sure if I get the marks

putting numbers into it is showing, not proving

Reply 416

Adamoooo

It's two packs as there is 400 grams of butter. Two times by 250 equals 500 which is more than enough. You probably mixed up flower with butter.

Original post by Sireniccc

0.4/0.4
60 total
600g
4 packs of butter
-6, -1 for the Vector Q
80 for the estimate Q
1/25 for 5^-2
8.5 for the rectangle
n(n-1) for the prove Q
root 3/81 for the surds question
h = 60/0.5 root(t)
Green = 9, Red = 12 - solved using a prob tree. pretty sure people will lose marks if they just did trial and error
tan/cos/sin Q - 1/2
48 for the volume Q
I got 3 and 8 for a/b, as I'm pretty sure they just want the number in a/b and not including the positive/minus signs
then the coordinates was (3,-8)

Reply 417

mohamad177

Original post by LegitDragoNinja

you'll probs get 3 if everything else was correct due to ecf marks.

ooh okay , thank you man that really made me feel relaxed ...
you know the simultaneous equation, I made silly mistake .. the answer was too easy I just had to find out where they touch each other..
what I did is that I made y the subject inn both equations and then put them equal to each other, and then I worked out the value of x and then put it back into the equation to find y .. that's definitely wrong right ?