2 answers:
Answer: -66 + 3d <em>or </em>3d - 66
Step-by-step explanation:
-6 + (-20) + (-40) + 3d
-6 - 20 - 40 + 3d
-26 - 40 + 3d
-66 + 3d or 3d - 66
Hope I helped!
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Answer:
d=2
Step-by-step explanation:
SHOWN BELOW
-11 ,-3, -6, 0, 7, 9 I hope im right
(3x + 13) + (8x + 14) + 109 = 180°
(3x + 13) + (8x + 14) = 71°
11x + 27 = 71°
11x = 44°
x = 4
About 3 minutes (2.667 minutes)
