Question

Find the 6th term of the sequence which has a 1st term of 5 and has a common ratio of 4.2. Round your answer to the nearest hundredth if necessary

Answer 1

2.25

Here's how this is done:

Obviously you could just multiply .5 by 72, then by 36, then by 18, etc., until you found the 6th term. But that's not the way you're supposed to do these.

Take the general formula:

a_n = (a_1)r^(n-1)

And plug in the given information to find the 6th term

a_6 = (72).5^(6-1)

= (72).5^5

= 2.25

Answer 2

did this help?

Answer 3

@mjoxprm360 did u mean 4.2 rather than 72?

Answer 4

oh absolutely my apologies.

Answer 5

its alright :)

Answer 6

nope my bad lol 72 is right

Answer 7

haha oh ok, thnx

Answer 8

no problem, here ill give you a medal!

Answer 9

u didnt have to do that but thnx :)

Answer 10

anytime, and thanks :)