nataliajohn nataliajohn

02-11-2020
Mathematics

contestada

If (2x + 30°) and (3x + 10°) are supplementary angles, then the value of x is
options:-
20°
56°
28°
86°

Respuesta :

annie5639 annie5639

02-11-2020

Answer:

c. 28°

Step-by-step explanation:

2x + 30° + 3x + 10° = 180° ( Sum )

or, 5x + 40° = 180°

or, 5x = 140°

or, x= 28° [ans]

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