angelliu11 angelliu11

07-08-2017
Mathematics

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In rectangle ABCD, AC = x + 10 and diagonal BD = 2x - 30. Find the value of x.

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nickster462 nickster462

07-08-2017

set the equations equal to each other, diagonals are equal so. 2x - 30 = x + 10 . so x = 40

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