COOLIOMARIS
05.05.2020 •
Mathematics
Formulas: s. = (a +Q) S, =0(1) So - a
Show all work. Give exact answers. Express answers in simplest form. (4 pts each)
1. Use a formula to find the 6th term of the geometric sequence: 11, -44, 176, ...
2. Find the first four terms of the sequense with nth term, an = 2n + 1
3. Use a formula to find the sum of the first 12 terms of the arithmetic series:
-11 - 3+5+ ...
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Ответ:
Everything looks correct except for the step to get to -6x < 36. Here you put multiplication property of order, and to get here you have to add 30 to both sides, so it would actually be the addition property of order.
I hope I helped!