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Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


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December 7th, 2016, 08:05 AM   #1
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I need help!

In the following figure, ABC is a triangle with sides measuring 25 cm, AB = AC = 15 cm and BC = 20 cm.

And is quad BDEF a square.

In those circumstances, the measure in centimeters, square BDEF side is equal to?
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December 7th, 2016, 08:31 AM   #2
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this can't possibly be correct the way you've labeled things.

AC is the hypotenuse of a right triangle and thus

AC > BC, AC > AB
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December 7th, 2016, 09:09 AM   #3
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The intention is presumably that AC = 25 cm, AB = 15 cm and BC = 20 cm.

If BD = DE = x, DC = (20 cm - x) and x/(20 cm - x) = 15/20, so x = (60/7) cm.
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