The diameter of a circle is 20 in. Find its circumference in terms of \piπ.

I'll give brainliest if you answer right : )

What is the inverse of the function f(x) = 2x + 1?

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.