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Grade 9 Maths Paper GCSE (and other difficult GCSE questions) - 2018 thread

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Original post by Jcordner
How do I do this


Which question are you stuck on? There are model answers if you need guidance
Original post by Y12_FurtherMaths
Which question are you stuck on? There are model answers if you need guidance

Love the fact that this thread is still going even after 2 years 😂
Original post by 3pointonefour
Love the fact that this thread is still going even after 2 years 😂


I'm living legend my reign will go on for years
@Y12_FurtherMathsI believe question 9 is worded too vaguely as it has two possible answers.
(edited 4 years ago)
Original post by Alex Guo
@Y12_FurtherMathsI believe question 9 is worded too vaguely as it has two possible answers.


Yes you're right
sounds so wierd
is the grade 9 paper edexcel, or what exam board is it ?
Original post by ManLik2
is the grade 9 paper edexcel, or what exam board is it ?

Suitable for all exam boards 👍
Hi
Probably a but late but is there any other way of working out number 5? I'm slightly confused about the trail and error
Original post by MGWilli4a
Hi
Probably a but late but is there any other way of working out number 5? I'm slightly confused about the trail and error


Hello!

The median is 120 as we’ve calculated. So let’s try going 1 below and 1 above. So our sequence is 115, 117, 119, 121, (going up in 2s) , 123,125. I have just excluded the left part of the sequence as we aren’t interested in that. Now this is a valid sequence, let’s try 2 either side of 120. So …, 118, 122, (up in 4s) 126,130. This works. Now try 3 below etc etc. When we try 6 below and above we reach an angle of 150 degrees which we don’t want as it should be below 150.

If you’d like a video solution that’s not trial and error, check this out : https://youtu.be/mtxyg8MT5WY

Minute 13:20

Thanks,
John
Thanks so mich
Original post by Y2_UniMaths
Which question are you stuck on? There are model answers if you need guidance


where can i find model answers

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