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andreev551 [17]
3 years ago
9

Please Help! If you can’t give a explanation don’t answer-

Advanced Placement (AP)
2 answers:
Effectus [21]3 years ago
3 0
Angles DCA and ACB are supplementary angles therefore angles DCA+ACB=180 degrees which is 155+ACB=180 then subtract 155 on both sides and you get ACB= 25 degrees. Since all angles in a triangle sum up to 180 degrees therefore angles ACB+CAB+ABC=180 which is 25+115+ABC=180 then simplify 140+ABC=180 then subtract 180 on both sides and you get ABC=40 degrees! Which is B. Sorry I usually write it down and take a pic but since I’m on my bed I gotta type it out hope this helps
Citrus2011 [14]3 years ago
3 0
The answer is B. 40 degrees!! i hope you have a good day:)
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