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Make r the subject of 5r+1=a(m+r)
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r = 27m + 1
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r = am-1/-a+5
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thank you can you show working ? please
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I haven't got any workings with mine, it was a complete guess as I'm terrible at maths. I just felt bad for you that nobody had answered and wanted to jog things on a bit.
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ok
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ok
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Elise's equation looks very messy to me though, no zing to it at all, who's going to remember that? I'd like to change mine to R=AM squared.
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Or, better yet....... R=R
Perfect. Short, pithy and unequivocally 100% correct. |
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Here it is ...
5r+1=a(m+r) 5r+1=am+ar 5r-ar=am-1 r(5-a)=am-1 r=(am-1)/(5-a) BTW I'm an accountant, so if you want a different answer, just let me know (it'll cost though) |
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thanks elise/ mememe very creative! cd you do 1 more ?
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ABCD is a trapezium
AB is 4cm CD is k cm longer than 4cm BC is square root of 3 cm The area of trapezium is 5 multiply square root 6 cm squared calculate k in form a root b - c where a b amd c positive intergers |
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how can BC < AB and CD?
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start top left corner
AB=4cm BC=root 3 cm CD=k cm longer than AB DA is a slope up to A /_] |
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Are you having trouble with your kids homework?
Imagine kids googling it and discovering a betting forum! |
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BTW I'm an accountant, so if you want a different answer, just let me know (it'll cost though)  Haven't done quadratic equations in 30 years. Had to Google how to do them  |
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Trapezium looks like
A ______4_____ B /l l / l 1 / l l root 3 / l 1 /____l__________l k D X C Area ABCD given as (5 x root6) squared Area ABCX = 4 x root3 Area AXD = (5 x root6 squared) - (4 x root3) Area AXD = (k x root3)/2 therefore (k x root 3)2 = (5 x root 6 squared) - (4 x root3) so you can solve the value of k by just doing the above calc. (I reckon) If you want me to show it as an expression though, it'll cost (I'm an accountant and former management consultant so can't do it all for free) |
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WTF happened to my diagram when I posted the reply ...???
Fookin Betfair. But I think you can still make it out. If you want it again it's £10 |
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r=3.m=1.a=4.
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is he a leftie?
That would explain it if he is. If not apologies |
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thanks all spec mememe cheque in post
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