Answer:
y= -13
Step-by-step explanation:
-13 plus 20 is 7
plug the -13 in where the y is and do the equation
-13+20=7
I Meant y = -13
the diagram shows a regular dodecagon is the size of one interior angle
By the chain rule,
Observe that
Then
sqrt (-1) = i the imaginary number
so the negative sqrt (-1) = -i