umadbro46111
31.08.2021 •
Mathematics
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Answers on questions: Mathematics
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Ответ:
x = 8
ABD = 46 degrees
DBC = 44 degrees
Step-by-step explanation:
Complementary Angles: two angles who’s sum together is 90 degrees
2x + 30 + 3x + 20 = 90
5x + 50 = 90
5x (+ 50 - 50) = 90 - 50
5x = 40
5x/5 = 40/5
x = 8
2(8) + 30
16 + 30
46
3(8) + 20
24 + 20
44
ABD = 46
DBC = 44
This is what I did in the photo
Ответ:
D
Step-by-step explanation: