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04-06-2021
Mathematics

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Find the unknown angle measure by solving for the given variable.

Options: 125 140 35 40

Find the unknown angle measure by solving for the given variable Options 125 140 35 40 class=

Respuesta :

sreedevi102 sreedevi102

04-06-2021

Answer:

m ∠ABD = 140°

m ∠DBC = 40°

Step-by-step explanation:

∠ (15x - 4) + ∠(5x - 8) = 180°

15x - 4 + 5x - 8 = 180

20x -1 2 = 180

20x = 180 + 12

x = 9.6

m ∠ABD = 15x - 4 = 140°

m ∠DBC = 5x - 8 = 40°

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