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vladimir1956 [14]
3 years ago
7

Please answer this question?​

Mathematics
2 answers:
Rudiy273 years ago
8 0

<em>a+40°+30°=360°</em>

<em>a+40°+30°=360°a+70°=360°</em>

<em>a+40°+30°=360°a+70°=360°a=360°−70°</em>

<em>a+40°+30°=360°a+70°=360°a=360°−70°a=290</em>°.

Svetlanka [38]3 years ago
7 0

Answer:

<u>Answer</u><u>:</u><u> </u><u>(</u><u>a</u><u>)</u><u>. </u><u>2</u><u>9</u><u>0</u><u>°</u>

{ \tt{a + 40 \degree + 30\degree = 360\degree}} \\  \\ { \tt{a  + 70\degree = 360\degree}} \\  \\ { \tt{a = 360\degree - 70\degree }} \\  \\  { \boxed{ \tt{ \:  \: a = 290\degree}}}

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