Sum of all interior angles = (n - 2) x 180.
Sum of all interior angles of a 70-gon = (70 - 2) x 180 = 12240°
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Answer: 12240°
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Answer:
wait let me try and see this carefully and then I will help you
Try this explanation:
Note, in the 1st row given '9x', in the 2d one - '9(0)', then it means the substitution '0' instead of 'x'. In other words <u>x=0</u> !
answer: x-intercept is '0', y-intercept is '12'