What is the circumference of a circle? A. A line segment that goes from one edge of a circle to the other and passes through the center.
B. Aline segment that goes from the center to the edge of a circle.
C. The distance around the circle.
D. The diameter plus the radius.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Someone answer asap for ! the following statements are true about the coins calvin and sasha have collected. * calvin and sasha has the same amount of money. * calvin has only quarters. * sasha has dimes, nickels, and pennies * calvin has the same number of quarters as sasha has dimes. * sasha has $1.95 in coins that are not dimes. exactly how many quarters does calvin have?