13-12-2016
Mathematics

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use the marked parallel lines to find the value of y in the diagram below (1 point)
a. 19
b. 50
c. 55
d. 18

use the marked parallel lines to find the value of y in the diagram below 1 point a 19 b 50 c 55 d 18 class=

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nobillionaireNobley nobillionaireNobley

16-12-2016

2x + 5 = 3x - 45 [alternate interior angles]
3x - 2x = 5 + 45
x = 50

4y - 1 + 2x + 5 = 180 [supplementaly angles]
4y + 2(50) + 4 = 180
4y + 100 = 176
4y = 76
y = 19

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