Answer:
-12x - 9xy
Step-by-step explanation:
-3x(4x - 5xy + 8y)
distribute
-12x + <u>15xy - 24xy</u>
combine like terms
-12x - 9xy
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you
Answer:
the 8th exterior angle is 49 degrees
Step-by-step explanation:
The sum of the exterior angles of an octagon is 360 degrees
(this is true for all polygons)
42°+55°+ 39°+ 20°+ 62°+45°,+ 47+x = 360
combine like terms
311+x=360
subtract 311 from each side
311-311 +x = 360-311
x=49
