Mr Broadwith

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Mr Broadwith

Mr Broadwith

@24HourMaths

Maths is life. #85. #170

Somewhere near Watford Katılım Ekim 2011
400 Takip Edilen2.4K Takipçiler
Matt Becker
Matt Becker@MattBecker82·
@24HourMaths s = t² r = s² = t⁴ AD² = AB² (t – s)² + (s – r)² = 2(s – r)² t – s = s – r t – t² = t² – t⁴ t⁴ – 2t² + t = 0 t(t – 1)(t² + t – 1) = 0 Solve for t in (0,1): t = (√5 – 1)/2 t² = (3 – √5)/2 t⁴ = (7 – 3√5)/2 t² – t⁴ = √5 – 2 AB² = 2(s – r)² = 2(t² – t⁴)² = 18 – 8√5
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Mr Broadwith
Mr Broadwith@24HourMaths·
I'm stuck on this one. Find the area of the circle.
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Henry D
Henry D@FO6DC4·
@24HourMaths Went through it more methodically, found 4 more. 1, 2, 5, 7 1, 3, 4, 5 1, 3, 4, 6 1, 3, 5, 6 I believe this is now every combination
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Mr Broadwith
Mr Broadwith@24HourMaths·
@FO6DC4 I do not think that that is a complete solution set, but your answers are all correct.
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Henry D
Henry D@FO6DC4·
@24HourMaths If I've understood the question correctly, then I think I have 4. 1, 2, 3, 7 1, 2, 4, 5 1, 2, 5, 8 1, 3, 4, 9 I don't believe there are any others
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Mr Broadwith
Mr Broadwith@24HourMaths·
@grundbirn This is correct - there was a typo in the question... the first x shouldn't be there! then it is a smoother answer :)
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Mr Broadwith
Mr Broadwith@24HourMaths·
Back in the game... part 1. For my Y11 this morning.
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Mr Broadwith
Mr Broadwith@24HourMaths·
Part 2... what do we think?
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250
Mr Broadwith
Mr Broadwith@24HourMaths·
Pete Dyson is at 245 miles and flying (23.7 mph average) - here come the lumps...
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Mr Broadwith
Mr Broadwith@24HourMaths·
From Ian Boon on course: "Around 110 miles. Nice tailwind to start, seems to be in good spirits despite first feed being half hour late. Bit of east in the wind now but certainly shifting"
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Michael Hutchinson
Michael Hutchinson@Doctor_Hutch·
Further is out on Thursday. Perfect for Father's Day. It contains the phrase "Vomity misery", and what parent wouldn't enjoy that?
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