What is the sum of the interior angles of a regular polygon with 12 sides?

For this case we have that by definition, the sum of the internal angles of a polygon of n sides is given by:

Where:

n: Represents the number of sides

According to the data, we have a 12-sided polygon, so

Thus, the sum of the internal angles is 1800 degrees.

1800 degrees

c. 4 1/4 pounds

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation: