a straight horizontal line is 180 degrees
box in the middle means that angle is 90 degrees
(s+1) + 90 + (2s-1) = 180
3s + 90 = 180
s = 30
Answer:
they both have a pattern and different shapes
Step-by-step explanation:
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-mnp(3m - 5n + 7p) =
-3m^2np + 5mn^2p - 7mnp^2 <==