The sum of angles in a triangle is 180°
40°+(8x+7)°+(9x+16)° = 180°
40 + 8x + 7 + 9x + 16 = 180°
40 + 7 + 16 + 8x + 9x = 180°
63 + 17x = 180°
17x = 180 - 63
17x = 117
x = 117 ÷ 17
x = 6.9 °
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Answer:
the correct answer is ( C )
2 x 3 - (2-10) + (2 x 4) =
6 - (-8) + 8
6 + 8 + 8 = 22
So the answer would be g, 22.