n the diagram below of AABC, side BC is extended to point D, mLA = 3x + 2, mLB = 4x-1, ACD = x+19. Find mLB. %3D A 3x+2 A+b =ACD x+2 + 2x+15 =X+19 X+19 4x D 5xジ=xt19 -17 5xニメ+2 ーx -× X=2

Elementary Geometry For College Students, 7e
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ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
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n the diagram below of AABC, side BC is extended to point D, mLA = 3x + 2, mLB = 4x - 1,
LACD = x+ 19. Find mzB.
A 3x+2
A+B =ACD
3x+2 + 2x+15 =X+19
X+19
4x-F
B.
5x t7 =xt 19
-17
イ1
5×ニメ+2
ーx -×
X=2
Transcribed Image Text:n the diagram below of AABC, side BC is extended to point D, mLA = 3x + 2, mLB = 4x - 1, LACD = x+ 19. Find mzB. A 3x+2 A+B =ACD 3x+2 + 2x+15 =X+19 X+19 4x-F B. 5x t7 =xt 19 -17 イ1 5×ニメ+2 ーx -× X=2
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