03-02-2020
Mathematics

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Can someone explain the steps for how do solve this?! I can’t get it right

Can someone explain the steps for how do solve this I cant get it right class=

Respuesta :

fatemehkorea fatemehkorea

03-02-2020

Answer:

x = 50

m∠D = 150°

m∠F = 30°

Step-by-step explanation:

supplementary angles are two angles whose sum is 180°

∠D + ∠F = 180°

3x + x - 20 = 180

3x + x = 180 + 20

4x = 200

x = 200/4

x = 50

D = 3*50 = 150

∠D = 150°

F = 50 - 20 = 30

∠F = 30°

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