adibap20 adibap20

20-10-2021
Mathematics

contestada

guy pls help me!!!!!

guy pls help me class=

Respuesta :

shikhajethi83 shikhajethi83

20-10-2021

Answer:

a= 11

Step-by-step explanation:

9a+ 6°+75° =180° (straight angle, they are called supplementary angles. so sum is equal to 180°

9a +81 = 180

9a= 99

a= 11

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