genyjoannerubiera
07.07.2019 •
Mathematics
Iknow that: the first term of the sequence is -2, and the fifth term is -1/8 . what do you know?
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Ответ:
Solution
Here the first term = -2
5th term = -1/8
Now we have to find the common ratio (r)
Fifth term A5 = -1/8
-1/8 =
Here
Plug in in the fifth term and find the value of r.
-1/8 = -2
r^4 = 1/16
Taking 4th root, we get
r = 1/2
Now let's find the second term.
first term *r = -2 *1/2 = -1
2nd term = first term * 1/2 = -1
3rd term = second term * 1/2 = -1 * 1/2 = -1/2
4th term = 3rd term *r = -1/2 *1/2 = -1/4
Thank you :)
Ответ:
7x is your answer
Step-by-step explanation:
Both of these numbers are like terms so you just combine them to get 7x