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Mathematics 15 Online
OpenStudy (anonymous):

The figure below shows two congruent triangular parks with . What is the value of x? 11 m 13 m 9 m 3 m

OpenStudy (anonymous):

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

the triangles are congruent (that's given)

jimthompson5910 (jim_thompson5910):

so the corresponding sides are equal

jimthompson5910 (jim_thompson5910):

So AC = DF which means 2x - 4 = x+5

jimthompson5910 (jim_thompson5910):

what do you get when you solve that for x

OpenStudy (anonymous):

3

jimthompson5910 (jim_thompson5910):

no, it's not x = 3

jimthompson5910 (jim_thompson5910):

2x - 4 = x+5 2x - x = 5+4 x = 9

OpenStudy (anonymous):

ohh

jimthompson5910 (jim_thompson5910):

maybe you said 3x = 9, which gave you x = 3 ?

OpenStudy (anonymous):

yess

jimthompson5910 (jim_thompson5910):

ah, i see

OpenStudy (anonymous):

:P

jimthompson5910 (jim_thompson5910):

silly mistake, but glad you know what you did wrong and you understand what's going on here

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