anonymous
  • anonymous
What are the explicit equation and domain for a geometric sequence with a first term of 4 and a second term of -8? (5 points) an = 4(-2)n - 1; all integers where n ≥ 0 an = 4(-2)n - 1; all integers where n ≥ 1 an = 4(-12)n - 1; all integers where n ≥ 1 an = 4(-12)n - 1; all integers where n ≥ 0
Mathematics
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Get this expert

answer on brainly

SEE EXPERT ANSWER

Get your free account and access expert answers to this
and thousands of other questions

anonymous
  • anonymous
i know it's a or b but i don't know how to find the domain
campbell_st
  • campbell_st
what do you think the common ratio is...? so 4 x r = -8 r = ?
anonymous
  • anonymous
i told you.. I know it's a or b i just don't know the domain

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
wait no isn't the common ratio -8/4
anonymous
  • anonymous
bc it's 2nd term divided by first
campbell_st
  • campbell_st
ok... so if you know its a or b look at a and substitute n = 0 into the equation.... what do you get..?
campbell_st
  • campbell_st
well the common ratio is the value you multiply the 1st term by to get the 2nd etc... it can be found by dividing the 2nd term by the 1st term...
campbell_st
  • campbell_st
but what happens when you substitute n = 0
anonymous
  • anonymous
how do i find the domain is what I'm asking
anonymous
  • anonymous
nvm
anonymous
  • anonymous
8i got your message late lol
anonymous
  • anonymous
so is it b
campbell_st
  • campbell_st
well to find the domain, you have 2 choices... so substitute each choice n =0 into the equation and then n = 1 and see which gives the 1st term of 4
campbell_st
  • campbell_st
so does \[a_{0} = 4\times (-2)^{0 -1}\] is \[A_{0} = 4\]
anonymous
  • anonymous
oh so it's a
anonymous
  • anonymous
thank you
anonymous
  • anonymous
umm it was b
campbell_st
  • campbell_st
lol... no its not a if you do the calculation its \[a_{0} = 4 \times (-2)^{-1} = 4 \times \frac{-1}{2} = -2\] all you needed to do was read the question, you were told \[a_{1} = 4 \] the 1st term was 4 so n = 1 \[a_{1} = 4 \times (-2)^{1 -1} = 4 \times (-2)^0 = 4 \times 1 =4\]

Looking for something else?

Not the answer you are looking for? Search for more explanations.