Could someone me figure out how to set up the equation for this problem? !

12

Step-by-step explanation:

The sum of the measures of the interior angles is given by:

n:sides of the polygon

And in a convex polygon the sum of the exterior angles sums 360°

Then

You just solve it and the answer is 12.

b.an increase in a causes b to decrease

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b