this is how i solved it
180/10=18
18*9=162
therefore the answer is 162
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Nine and six tenths
0.9 that is how you write nine-tenths in standard form
If this 9 sided polygon is a regular polygon, then the sum of its angles is:(n - 2)180 degrees = (9 - 2)180 degrees = 7 x 180 degrees = 1,260 degrees.
The place value columns are: hundreds, tens, units, <decimal point>, tenths, hundredths, thousandths → 9 is nine hundreds = nine hundred → 8 is eight tens = eighty → 7 is seven units = seven → 6 is six tenths → 5 is five hundredths → 4 is four thousandths
The supplement of an angle x is equal to 180 - x. The measure of an angle that is nine times its supplement can be written as: x = 9(180 - x) You can then solve for the measure of the angle x: x = 1620 - 9x 10x = 1620 x = 162 Therefore, that angle which is nine times its supplement is itself 162 degrees.