Andyyyy11
Andyyyy11
08-10-2017
Mathematics
contestada
I don't know which one please help
Respuesta :
ruhibreddy
ruhibreddy
08-10-2017
Since ABC and DBC equal 90 degrees:
2x + 14 + x + 7 = 90
3x + 21 = 90
3x = 69
x = 23
Note that the question isn't asking for x, but angle ABC. So:
x + 7
23 + 7
30°
Hope this helps!
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