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29-12-2020
Mathematics

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ZA and ZB are supplementary angles. If m A = (6x – 30)° and m
ZB = (8x + 28)°, then find the measure of ZA.

Respuesta :

ChoiSungHyun ChoiSungHyun

29-12-2020

Step-by-step explanation:

Supplementary angles : Add up to 180°.

Therefore (6x - 30)° + (8x + 28)° = 180°,

14x - 2 = 180, 14x = 182, x = 13.

Hence mA = [6(13) - 30]° = 48°.

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