Wegnerkolmp or someone who knows mathshalf of the sides of a polygon are 8 degrees and the other exterior angles are each 12 degrees. how many sides has the polygon got?

There are 36 sides

Step-by-step explanation:

The sum of the exterior angles of a polygon is 360 degrees

Let n = number of 8 degrees  exterior angles

We know that n is also the  number of 12 degree exterior angles  ( 1/2 means that they are equal)

Multiply the number of angles by the degrees and add them up to get 360 degrees

n8 +n12 = 360

Combine like terms

20 n = 360

Divide by 20

20n/20 =360/20

n = 18

There are 18 8 degree sides and 18 12 degree sides

18+18 = 36

There are 36 sides

The starting prices for both of the books are at 100%, and taking 25% from the second book it would be 75%. You will have 75% of each value of the books while they're on sale, which you can convert to decimal .75. Multiply this decimal by each of the books' values to figure out how much they'll be on sale and then add them, which would total up to 36 + 18= 54$. By dividing this value by the book's original value, 60$, would equal it to .9. Converting the .9 to a percent and subtracting it by 100%, It's reduced by 10%.