Leanne523 Leanne523

22-09-2017
Mathematics

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If angle9 = 7y° and angle10 = 3y°, what is the measure of angle16 such that x is parallel to z?

If angle9 7y and angle10 3y what is the measure of angle16 such that x is parallel to z class=

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texaschic101 texaschic101

23-09-2017

7y + 3y = 180
10y = 180
y = 180/10
y = 18

so < 9 = 7y = 7(18) = 126
< 10 = 3y = 3(18) = 54

< 9 and < 11 are corresponding angles....so they are equal....so < 11 is 126 degrees....< 11 and < 16 are vertical angles...so they are equal....so < 16 is 126 degrees <==

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