PS: Find x coordinate

Question

Please see the attached figure for question. Answer choices are: a) 19 b) 17 c) 15 d) 12 e) 8 OA and my answer does not match

and I do not have OE. Hence I wanted to check whether I am missing something.

laxieqv · Answer

looks like l1//l2// x-axis 
from the graph, coordination of a is (7,3) and b ( x,8)
we have : (7-x)^2+ (8-3)^2=13^2 , calculate this and get x=19

Bhai · Answer

Adding on to this:

x^2 - 14x - 95 = 0
(x = 19) (x + 5) = 0

laxieqv · Answer

sure

..but then the answer choices provide only 19 so i said x=19

Bhai · Answer

No I was trying to use you calc so that I can type less. Howzzzzat? :lol:

sudhagar · Answer

The software reported a wrong OA. The 'actual' OA is (a), but the software reported OA as (d). This was the second question in the sample CAT, which reduced by overall quant score

nakib77 · Answer

the y coordinate of line 2 will be 8 , let x coordinate of line 2 is x

and y coordinate of line 1 will be 3, x coordinate is give as y 

because the difference between a and b is 13

so (x-7)^2 + (8-3)^2 = 13 ^2

or, x-7 = 12

so x = 12+7 = 19

so A is the answer.

yup there can always be errors.... in chose prep guides.

christoph · Answer

triangle triplets are 3-4-5, 5-12-13 and 8-15-17 ! in this case its 5-12-13. 12+7=19 !

nero44 · Answer

kaplan '04 edition does not give the 8-15-17 triangle in its math reference! good to know

PS: Find x coordinate

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