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Maths Edexcel Paper 3 unofficial markscheme

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Reply 180

JerseyR

Original post by MydaMina

What grade would 163/240 roughly be?
ANYONE.

I'd say a guaranteed 7, quite possibly an 8.

Reply 181

A02

Original post by JerseyR

Of course it is a valid rule. You know it as AAS but is essentially the same thing as the AAS Theorem only requires that there be two sets of equal angles and a set of any equal sides. The sides do not need to be included (in between the angles). For an SAS assertion the angle must be the included angle so as a result, SAS is valid but SSA is not.

SAS can uniquely determine a triangle in the following case:
If ABC is a triangle, and AB>=BC and you know AB, BC and angle BCA, then SSA is sufficient to uniquely determine the triangle.

Reply 182

lbower114477

anyone know the boundaries for a 8

Reply 183

alphamale27

Original post by dbuzhiqi

or maybe you just not very good at counting

they changed it after i called them out for it, mate.

Reply 184

meerab_humayun

Original post by rohans01

Matches was 240 as two teams playing another is one match.

You may get one mark for that because they question said that each team plays other teams twice so it's 480 times.

Reply 185

zeha

For Q18c, do I lose a mark because I wrote out the full answer and didn't round it up?

Reply 186

sanjay19

yes

Original post by jk1947

wasn’t the matches question 480 because they play each team twice??

Reply 187

Fashuss17

Original post by A02

ASA is valid.

If you have a side and two angles on either side, it's pretty intuitive to see you uniquely determine a triangle.

Any way is valid as long as your are able to justify it however the two most common ones and ones that are probably named on the mark scheme are RHS and SAS

Reply 188

Masked Entrant

Original post by sanjay19

yes

Your teachers now have access to the papers they can show you many ways why 480 is wrong. There are also many excellent reasons on here why it is definitely 240.

Reply 189

Fashuss17

Original post by Masked Entrant

Your teachers now have access to the papers they can show you many ways why 480 is wrong. There are also many excellent reasons on here why it is definitely 240.

It is definitely 240. If you go on YouTube I’m sure they have worked answers!!

Reply 190

Fashuss17

Original post by Fashuss17

It is definitely 240. If you go on YouTube I’m sure they have worked answers!!

It’s 240 because:
Yes 15*16 = 240
And then you would think times by 2 to get 480
However each team played each other twice so for example team A played agains team B twice then if you times by 2 you’re saying tbat team B vs Team A twice will make the entire total. So in total Team A vs Team B four times if you times by to that is why it is 240

Sorry if you cannot understand it it was hard to explain why.

Reply 191

hasan.hayta

Q16 , i did write 497.5cm but i rounded the answer to 500 for the actual answer box. I still wrote the actual answer but would i lose any marks for rounding for my final answer? stupid question but i was curious

Reply 192

Fashuss17

Original post by hasan.hayta

No if they can see the correct working and answer somewhere on the page some examiners may not penalise you because it’s an ECF (error carried forward) and you’d only lose 1 mark so don’t stress about it.