please help #5 .....
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Answer:
The answer is B.
Step-by-step explanation:
In a linear pair, the total angles is 180°. So we can form an expression for both angles. Let x be the smaller angle and 8x be the larger angle :
x + 8x = 180°
9x = 180°
x = 180° ÷ 9
x = 20°
Next, we have to substitute the x value into the larger angle expression :
8x = 8 × 20° = 160°