azktanae5855
azktanae5855
28.01.2020 • 
Mathematics

Lines ab and cd are parallel. if ∠3 measures (3x + 20)°, and ∠4 measures 70°, which equation could be used to solve for x? a. (3x + 20)° + 180° = 70° b. (3x + 20)° + 70° = 180° c. (3x + 20)° = 70° d. (3x + 20)° + 60° = 180°

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