Answer:
Option d.
y2-y1/X2-X1
Step-by-step explanation:
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9+x / 3x = 5/6
If you look at it as a proportion, then you can "cross-multiply" it"
(9+x) · 6 = 3x · 5
54 + 6x = 15x
Subtract 6x from each side:
54 = 9x
Divide each side by 9 :
6 = x
Step-by-step explanation:
option C
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Answer:
1. FCE, ED 2. FCB
explanation:
Supplementary angles are two angle that when added together, equal 180°.