Qualification > Math
IGCSE Maths doubt(paper 4)
Alpha:
--- Quote from: nid404 on November 01, 2009, 02:52:49 pm ---Gradient formula should be used for the second 1....but for the first one i think we need to used distance formula....they did something else.....
so aadi....could u use the distance formula FOR the first one ??
@alpha-i know he asked for the 2nd one ans I know the stuff.....I was asking abt the first part cuz I used the distance formula for the first one and got a different answer
--- End quote ---
k = 26...
Which answer you got??
There are 2 answers... k = - 14 and k = 26.
-14 is negative; rejected.
nid404:
so u get k=26 right........cuz the toxic guy sot something else
~~~~shreyapril~~~~:
hmm...
to spell beans over your hard work i would like to tell you all tat answer is 16!!!
so how to get 16????
Ghost Of Highbury:
--- Quote from: ~~~~shreycool~~~~ on November 01, 2009, 04:51:33 pm ---hmm...
to spell beans over your hard work i would like to tell you all tat answer is 16!!!
so how to get 16????
--- End quote ---
didnt i answer it
?
Ghost Of Highbury:
--- Quote from: A@di on October 31, 2009, 03:00:39 pm ---ok..
first. --> AB=OB - OA = 4i + 6j
--> BC = OC - OB = (k-6)i + 15j
BC = x(AB)
(k-6)i + 15j = 4xi + 6xj
k-6 = 4x
6x = 15
x = 2.5
--
k-6 = 4*2.5 = 10
therefore --> k =16
--- End quote ---
check this
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