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29-07-2015
Mathematics

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In a triangle ABC, AB:BC is 5:9. On the triangle AB=15 and BC=5x+2. Write a proportion and solve for the variable

Respuesta :

29-07-2015

If AB is 15, then BC is 15*9/5=27. Therefore, we can write the equation 5x+2=27.

We subtract by 2 to find that 5x=25, and divide by 5 to see that x=5.

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