Determine which ratio forms a proportion with 10/6 by using cross products. a) 15/12 b) 30/9 c) 20/9 d) 30/18

An equation where variables are used to represent known values—function notation true or false

How to use order of operation in 20 divide by 4 multiply 5 = 1

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