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Mathematics 8 Online
OpenStudy (anonymous):

Help find the value of x? (figure attached) MEDAL!

OpenStudy (anonymous):

OpenStudy (anonymous):

@aum can you help me?

OpenStudy (aum):

A line parallel to the base meets the other two sides of the triangle. Therefore, x / (x+5) = (x-2) / (x+1) Solve for x. Cross multiply, equate and solve for x.

OpenStudy (anonymous):

how would i start that equation? by adding the like terms?

OpenStudy (anonymous):

@aum

OpenStudy (aum):

\[ \Large \frac {x}{x+5} = \frac {x-2}{x+1} \\ \text{Cross Multiply:} \\ x(x+1) = (x-2)(x+5) \\ x^2 + x = x^2 + 5x - 2x - 10 \] Can you simplify and solve for x?

OpenStudy (anonymous):

x=5?

OpenStudy (anonymous):

@aum

OpenStudy (anonymous):

is that correct?

OpenStudy (here_to_help15):

:P

OpenStudy (anonymous):

do you know if im correct?

OpenStudy (here_to_help15):

i would assume yes considering that @aum is the geinus

OpenStudy (anonymous):

yup 5 is correct!! thank you guys!

OpenStudy (here_to_help15):

do i get medal :P

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