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# National 5 Maths Exam 2016

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1. (Original post by Ethan100)
Can somebody please watch this video ?

Its the 2nd last question from Paper 2 2016 Nat 5

I may be incorrect but isn't the final answer 4.8 + 6.6 (Not +9 as shown in the video).
Isn't it the radius of the circle which is from the centre to the circumference so it should be 6.6, right ?

Thanks
It is 4.4+6.6.
2. How many marks would I get for the question at the end of paper 2

I wrote 6²+3²-2x6x3xcos(90)
Root45
Then 6.7082 and rounded to 7 by accident

when the correct way was
6²+10²-2x6x10xcos(3/4)
root46 then 6.782 rounded to 6.8?
3. Awful! My class had no teacher for three and a half months. Only knew how to do a couple of questions in both papers
4. (Original post by xJoe200)
How many marks would I get for the question at the end of paper 2

I wrote 6²+3²-2x6x3xcos(90)
Root45
Then 6.7082 and rounded to 7 by accident

when the correct way was
6²+10²-2x6x10xcos(3/4)
root46 then 6.782 rounded to 6.8?
Possibly 1 for correct form of cosine rule, and you won't be penalised twice for premature rounding.
So 1-2 probably
5. (Original post by SusanC)
I got 7 for the length, anyone?
7 was the right answer! Unfortunately i realised that as soon as i left the exam hall (WHY??!!??) i DID SOMETHING SILLY AND GOT 2ROOT 10 but yeah, 7 was the right answer

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