Oh wait, I know what's wrong now: I thought for a while the total was 75, so I took the marks from the other guy including Q5 and Q6 because I didn't know how else to get to 75 marks >.<

I'll go fix the mark scheme, could you check when you see your teacher tomorrow? :h:

EDIT: I've fixed the mark scheme, but it now adds up to 71 marks... There's an extra mark in there somewhere.

EDIT2: I dropped 6(a) to 2 marks because I can't see a basic substitution question getting 3 marks.

(edited 9 years ago)

Reply 89

Sulfur

Original post by Applequestria

Oh wait, I know what's wrong now: I thought for a while the total was 75, so I took the marks from the other guy including Q5 and Q6 because I didn't know how else to get to 75 marks >.<

I'll go fix the mark scheme, could you check when you see your teacher tomorrow? :h:

Yups no problem. There's three teachers that'll have the paper that I can go and see about the paper over this week so I'll definitely see it.

Reply 90

iamastudent123

1

How did you guys work out the cosine triangle?

Reply 91

Swag>education

1

I know I got atleast 50 can I still get an A*? How many marks would I need on paper teo

Reply 92

Super199

20

Original post by iamastudent123

How did you guys work out the cosine triangle?

I did

Cos B= \dfrac{b^2+c^2-a^2}{2bc}

Plug in the sides and square/simplify
Then you should get to

Cos B = \frac{1}{2}

Then I just said arc-cos of 1/2 = 60

Reply 93

Super199

20

Original post by Swag>education

I know I got atleast 50 can I still get an A*? How many marks would I need on paper teo

Yh you could still get an A^ if you got really high on the calculator. But probably around 70 marks to be guaranteed.

Reply 94

Applequestria

OP

5

Original post by Super199

I did

Cos B= \dfrac{b^2+c^2-a^2}{2bc}

Plug in the sides and square/simplify
Then you should get to

Cos B = \frac{1}{2}

Then I just said arc-cos of 1/2 = 60

Do you remember what the sides were? It's really annoying me xD

Reply 95

Super199

20

Original post by Applequestria

Do you remember what the sides were? It's really annoying me xD

a= root 14
b= root 2
c= 3root 2

I think. :redface:

Reply 96

username1290271

1

Ahhh I'm so annoyed!! For q9 I thought BC was 20% of AB not AC :frown:

will I have got any marks if I did the right working out/got the right answer for that?? so annoyed with myself

Posted from TSR Mobile

Reply 97

Applequestria

OP

5

Original post by Super199

a= root 14
b= root 2
c= 3root 2

I think. :redface:

Thanks

Reply 98

Applequestria

OP

5

Original post by erloean

Ahhh I'm so annoyed!! For q9 I thought BC was 20% of AB not AC :frown:

will I have got any marks if I did the right working out/got the right answer for that?? so annoyed with myself

Posted from TSR Mobile

As long as you got most of the other working-out correct, then you should get 2 or 3 out of the 4 marks. :smile:

Reply 99

Applequestria

OP

5

Original post by iamastudent123

How did you guys work out the cosine triangle?

b^2 = c^2 + a^2 - 2(c)(a)(cos(B))
14 = 2 + 18 - 2(√2)(3√2)(cos(B))
14 = 20 - 12(cos(B))
-6 = -12(cos(B))
cos(B) = 1/2
B = 60 degrees (I drew a diagram at the side of a 30-60-90 triangle)

AQA Level 2 Further Mathematics, Paper 1 Unofficial Mark Scheme, June 2014

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you