Answer:
11a + 13c -b - 36
Step-by-step explanation:
We add all the sides together because we're looking for perimeter.
Answer:
9x-4
Step-by-step explanation:
add 5x and 4x
9x-3-1
subtract 1 from -3
9x-4
3x and -2x are like terms because they both have the variable X
Answer:
300 dollars
Step-by-step explanation:
250 x 0.2= 50
250 + 50=300
Answer:
three angles of a polygon are each 105.5,the sum of the angles in the polygon is 2520. find each of the other angles if they are equal to each other. For a polygon with n sides and n angles, the sum of the measures of all the interior angles equals (n-2)180 degrees. 16-3=13