You can put this solution on YOUR website! The first three terms of 3n-are as follows: 1st term=3(1)-1 =3-1=2 2nd term=3(2)-1

"What is the 15th term in the sequence using the given formula Cn=3n-1" Algebra -> Sequences-and-series -> SOLUTION: Please help me solve this problem, this is my first time seeing it and i dont understand.

You can put this solution on YOUR website! a = 3n+1 Solve for n. a = 3n + 1 a - 1 = 3n (a - 1)/3 = n To solve for a variable means to isolate the variable.

Question 326423: An=3n-1 Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Question 852308: What is the solution of the proportion? n-6= n-5 3n 3n+1 I cross multiplied and got (n-6)(3n+1)=3n(n-5) and I then FOILed and did the distributive property and got 3n^2+n-18n-6=3n^2-15n and I am now stuck and have no idea what to do next..

You can put this solution on YOUR website! n-6 n-5--- = ---3n 3n+1 cross multiply. 3n(n-5)=(n-6)(3n+1) 3n^2-15n=3n^2-17n-6

You can put this solution on YOUR website! (3n+2)! / (3n-3)! = (3n+2)*(3n+1)*(3n)*(3n-1)*(3n-2)*(3n-3)! divided by (3n-3)!

Tasks 1), 2) and 3) relate to arithmetic progressions. On Method of mathematical induction for arithmetic progressions, see the lesson - Mathematical induction and arithmetic progressions in this site. Find there the solutions for similar problems. Task 4) relates to the sum of squares of natural numbers.

(1) Show that the formula is true for n=1 For n=1, the formula says TRUE (2) Show that, if the formula is true for some n, it is also true for n+1 We assume, as the formula says, that 1+4+7+...+(3n-2) is equal to and add the next term (, or ) and show that the resulting expression is equal to = = = The proof by induction is complete.

3N - 1 3(2) - 1 = 6 - 1 = 5...That's not it. 3N - 1 3(3) - 1 = 9 - 1 = 8...This is it! There is no need to ...