Find the common difference of the arithmetic sequence. 6, 9.4, 12.8, 16.2, . . a. 3.4 b. 15.4 c. 1.6 d. –1.6

We just started the introduction into circles and i have no idea how to do this.

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?