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Tamiku [17]
3 years ago
14

Pleaseeeeeeeeeee helppppppp i will mark brainlest

Mathematics
2 answers:
schepotkina [342]3 years ago
7 0

Answer:

b) 40

Step-by-step explanation:

By angle sum property of a triangle:

x°+20°+120°=180°\\x°+140°=180°\\x°=180°-140°\\x° = 40°\\\huge \red {\boxed {\therefore x = 40}}

IgorC [24]3 years ago
7 0

Answer:

B)40°

Step-by-step explanation:

Sum of angles in a triangle =180°

120°+20°+x°=180°

140°+×°=180

Collect like terms

x°=180°-140°

x°=40°

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