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saifoo.khan
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shubhamsrg
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C and D is same thing,, and its an eqn of straight line,,so i dont really know!! :P
mathslover
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c ...
saifoo.khan
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Why? @mathslover
Mimi_x3
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a
saifoo.khan
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It's okay. @shubhamssrg :)
saifoo.khan
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Why? @Mimi_x3
mathslover
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one minute ...
Shubham what if a=1 and b=i?
mathslover
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Hence (d) is wrong.
saifoo.khan
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So (c) ?
mathslover
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Now coming to the Left options i.e. a, b and c
mathslover
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It will take time to conclude whether I am right with C option.
Mimi_x3
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\[y = \frac{(-a-1)x}{b} \]
\[-a - 1 = 0 => -a = 1 => a = -1 \]
so (a)
Mimi_x3
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i mean (b)
Mimi_x3
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wait im confused
saifoo.khan
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i entered (a) . -_-
mathslover
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yep... u must be
Mimi_x3
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lol it cant be a
saifoo.khan
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WTH! Let me post another one.
mathslover
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It is C but I need to tell the proof for that
Mimi_x3
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its (b)
saifoo.khan
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saifoo.khan
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@mathslover , i entered it already..Can't go back now. Sorry.
Mimi_x3
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its not (a) for sure!!! change it
saifoo.khan
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I CAN'T CHANGE.. CAN'T GO BACK.
saifoo.khan
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sOLVE ANOTHER ONE.
mathslover
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|dw:1347366185476:dw|
mathslover
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oh I meant same for other triangle
mathslover
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I applied Heron's Formula here
saifoo.khan
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FIND THE AREAAAAAAA!
Mimi_x3
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isnt it just (1/2*a*b)*2 for that squaure? lol
mathslover
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Is it necessary to be a square?
saifoo.khan
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YOU GUYS ARE SLOW..
mathslover
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Can not it be a rhombus?
Mimi_x3
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\[\left(\frac{1}{2}*8*8\right) *2\]
we are not slow;
saifoo.khan
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64?
Mimi_x3
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maybe tho
Mimi_x3
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dont trust me
what do you think mathslover
saifoo.khan
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@mathslover ?
saifoo.khan
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im GOING WITHH 64.
Mimi_x3
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no
saifoo.khan
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THANKS ALL. MORE COMING. :D
mathslover
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\[\large{\sqrt {X^2-l6}\times8}\]
mathslover
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oops is it square for sure?
Mimi_x3
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yes i am; i checked, a square is a quad
saifoo.khan
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Lets see who answers first.
Mimi_x3
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what does collinear mean again?
saifoo.khan
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Seriously?
Mimi_x3
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i got it
saifoo.khan
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|dw:1347366792252:dw|
Mimi_x3
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B(2,2) C(-3,1)
find the equation of the line; than plug A(a,-2) to find the point
saifoo.khan
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-18.
saifoo.khan
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On a map drawn to a scale of 1 : 1,25,000. One triangle plot of land has the following measurements : PQ = 10cm, QR = 8cm and Calculate: The area of the plot in square km.
saifoo.khan
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37.5