Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions



Sn=A1(1-r^n) ÷ (1-r)

^ means raise to the power
0 0 0
An=a¹rn An,=last term given A¹=first term R=Common ration N=Total means (number of given lines)
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts