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Mathematics 20 Online
OpenStudy (catsrcute9):

Math Problem, super stuck a) 5cm b) 6.5cm c) 4cm d) -5.5cm

OpenStudy (anonymous):

wat

OpenStudy (anonymous):

whats the question.

OpenStudy (catsrcute9):

OpenStudy (anonymous):

it s9498q3849238948928493423423s k bye

OpenStudy (mathstudent55):

If a segment intersects two sides of a triangle and is parallel to the third side, it divides the two sides into proportional segments.

OpenStudy (mathstudent55):

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OpenStudy (mathstudent55):

The triangle above represents the same situation you have in your problem. Since segment DE is parallel to side AC, then the lengths of the segments of sides AB and BC are proportional. You can write this equation of proportionality: \(\dfrac{a}{c} = \dfrac{b}{d} \)

OpenStudy (mathstudent55):

Do that for you r problem and substitute the given lengths in the proportion. Then you can solve for x.

OpenStudy (mathstudent55):

Once you solve for x, substitute the value of x in the expression for DB to find the length of DB.

OpenStudy (catsrcute9):

Okay, working it out right now

OpenStudy (catsrcute9):

So, would it be 4cm?

OpenStudy (mathstudent55):

I didn't get that.

Directrix (directrix):

Use the Means-Extremes Property to solve. |dw:1456805872528:dw|

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