I have two left I need help with and don't understand.

Find the partial sum S6
1. An=3n+2

2. Find the number of terms n in an arithmetic sequence if a1=20, d=5, and An=75.

Similar Questions
  1. Evaluate: f(x,y)=2x^3e^ya) partial derivative with respect to x. I know that you have to treat y as a constant but I have no
    1. answers icon 2 answers
    1. answers icon 3 answers
  2. Find out the partial derivative w.r.t 'x' and 'y' off (x,y) = log(y) x Now, log(y) x = ln x / ln y Partial Diff w.r.t 'x' = 1/ x
    1. answers icon 1 answer
    1. answers icon 1 answer
more similar questions