# Maths help!!!

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#1
In triangle JKL
M is the midpoint of JK
JN : NL = 3 : 2
KL=7a NL= 4b
Work out JM in terms of a and b.
Last edited by S551; 1 month ago
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1 month ago
#2
What have you tried so far?
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#3
What have you tried so far?
I have tried nearly all the ways I can think of but I just can get it. Please help!
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1 month ago
#4
(Original post by S551)
I have tried nearly all the ways I can think of but I just can get it. Please help!
It would help to see your attempt(s) as per
https://www.thestudentroom.co.uk/sho....php?t=4919248
Last edited by mqb2766; 1 month ago
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1 month ago
#5
(Original post by S551)
I have tried nearly all the ways I can think of but I just can get it. Please help!
I have attempted the question. Do you have the final answer by any chance?
Last edited by MiladA; 1 month ago
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1 month ago
#6
(Original post by S551)
I have tried nearly all the ways I can think of but I just can get it. Please help!
Well, you're told how M relates to JK, but you don't know what JK is. So how can you get from J to K via the "long route" and what pieces of information do you need to put together to get this?
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1 month ago
#7
(4b=2 parts so 6b=3 parts so find JL)
JM= 1/2(JK)
Last edited by Mathsssssforever; 1 month ago
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1 month ago
#8
(Original post by Mathsssssforever)
(4b=2 parts
Forum rules say to ONLY give a hint - plz edit
Last edited by Muttley79; 1 month ago
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1 month ago
#9
(Original post by Muttley79)
Forum rules say to ONLY give a hint - plz edit
Okay
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1 month ago
#10
I have the same! I think
Remove the quote plz
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1 month ago
#11
I have the same! I think

I do not have the mark scheme unfortunately but I do have a similar answer. I have JM = -3.5a + 5b.
Yep I’m sure that’s right
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1 month ago
#12
Anyway, as davros mentioned take the long route as JM is not easy to determine right away. Be sure to use the information given carefully and also the fact that a vector AB (for example) = -BA.
Last edited by MiladA; 1 month ago
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