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14-02-2019
Mathematics

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ABCD is an isosceles trapezoid. If AD BC m

ABCD is an isosceles trapezoid If AD BC m class=

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14-02-2019

Answer:

C) 40

Step-by-step explanation:

ABCD is an isosceles trapezoid

So <B = <C

x+10 = 2x - 30

-x = -40

x = 40

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