The diagram shows a square divided into strips of equal width. three strips are black and two are grey. what fraction of the perimeter of the square is grey?

2x+3y=12 x-y=6 solve the following system equations

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Can someone me with these two circle theorem questions asap?