Mathematics: Post your doubts here!

étudiante

étudiante

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ayeshaddy said:
In quadrilateral ABCD, AB produced is perpendicular to DC produced. If <A = 44 and <C = 148, calculate <D and <B!
this one...
Click to expand...
is there a diagram with this? i cant seem to understand how AB and DC can be perpendicular...
 
GetSomeLife

GetSomeLife

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Hamzeh S said:
Can someone solve this ?? please ! http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Mathematics (0580)/0580_s10_qp_42.pdf

questions 10 part c ) i)
Click to expand...
It's easy:

Replace 'n' by a number from the table e.g. 3 and accordingly, the diagonals will be 0

1/p * 3(3-q) = 0
3/p (3-q) = 0
(9 - 3q)/p = 0
Take p to the other side... it multiplies and o* anything is o ;)
9 - 3q = 0
9 = 3q
q = 3 :)

Now take some other number:
1/p * 4(4-q) = 2
we know that q = 3
1/p * 4(1)
4/p = 2
2p = 4
p = 2 :D
 
A

ayeshaddy

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GetSomeLife said:
It's easy:

Replace 'n' by a number from the table e.g. 3 and accordingly, the diagonals will be 0

1/p * 3(3-q) = 0
3/p (3-q) = 0
(9 - 3q)/p = 0
Take p to the other side... it multiplies and o* anything is o ;)
9 - 3q = 0
9 = 3q
q = 3 :)

Now take some other number:
1/p * 4(4-q) = 2
we know that q = 3
1/p * 4(1)
4/p = 2
2p = 4
p = 2 :D
Click to expand...
Seriously!!! -,-
Masha Allah
 
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