| n+2 | = 7 absolute value
1 answer:
Answer:
Step-by-step explanation:
| n+2 | = 7 : n+2 = 7 or n+2 = -7
n=5 or n = - 9
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Check the picture below.
recall that negative angles go "clockwise".
Here you go. I hope this will help
8x + 3× + 9x = 180
20x = 180
x = 180/20
x = 9
The smallest angle is: 3×9 = 27 degrees
Note: 180 degrees is the sum of angles in a triangle
99 plus 9 tens?? if so, 189