Find the value of x. then find the angle measures of the polygon.

x = 43

Step-by-step explanation:

Since it says at the bottom that the sum of angle measures is 360° that means  that you can dd up all the angles and it will equal 360.

Set up an equation

(3x) + (2x) + (x + 12) + (2x + 4) = 360

Then add them all together.

5x + (3x + 16) = 360

8x + 16 = 360

Subtract 16 from both sides to get 8x alone.

8x = 344

Then divide both sides by 8 to get x

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5