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Trava [24]
3 years ago
14

Find the value of x. A. 5.58 B. 9.14 C. 15.2 D. 10 PLEASE HELP!!! :(

Mathematics
1 answer:
nadezda [96]3 years ago
7 0

Answer:

<u>D</u><u>.</u><u> </u><u>1</u><u>0</u>

Step-by-step explanation:

{ \sf{(12x + 12) \degree = 79\degree + (5x + 3)\degree}} \\  { \sf{ \{outer \: angle \: is \: equal \: to \: sum \: of \: inner \: angles \}}} \\ { \sf{12x - 5x = 79  + 3 - 12}} \\ { \sf{7x = 70}} \\ { \sf{x = 10}}

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