12/20 + 9/20 = Write as BOTH an
improper fraction and a mixed number.

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

Standard deviation of 19,29,21,22,23

What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701? hint: cap s sub n equals start fraction a sub one left parenthesis one minus r to the power of n end power right parenthesis over one minus r end fraction comma r ≠ 1, where a1 is the first term and r is the common ratio