# maths problems help

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#1
questions are below
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#2
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1 month ago
#3
(Original post by patatasfritas007)

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#4
sorry i was rly struggling
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1 month ago
#5
(Original post by patatasfritas007)
sorry i was rly struggling
What do you understand / what are you stuck with.
Sketching the diagram for the first one will help.
Last edited by mqb2766; 1 month ago
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#6
for the part a of the first question I keep getting -8a+3b instead of 2a+3b
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1 month ago
#7
(Original post by patatasfritas007)
for the part a of the first question I keep getting -8a+3b instead of 2a+3b
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#8
..
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1 month ago
#9
Youve worked out
AB = b-a
So
AR = ...
So
OR = OA + AR = ...
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#10
but then i'd get 4a -3b?
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1 month ago
#11
(Original post by patatasfritas007)
but then i'd get 4a -3b?
Only if you do it incorrectly.
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#12
..
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1 month ago
#13
(Original post by patatasfritas007)
..
No.
AB = b-a
AR = 3/5(b-a)

I can't help thinking you maybe should go through some of the earlier questions in the section first.
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#14
ok i will but could u clearly write out how u would solve this so I can understand it
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1 month ago
#15
(Original post by patatasfritas007)
ok i will but could u clearly write out how u would solve this so I can understand it
If you've done (and understood) the earlier questions in the section, you'd not be asking this. But the forum guidelines are not to provide solutions, sorry.

As in the previous post, if you're making mistakes like this, I'd go back over some skill enabler questions on vectors before proceeding with these.
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#16
ok thank you
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