Algebra
11 Online
OpenStudy (anonymous):
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
a(n) -6 + (n - 1) (6)
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OpenStudy (anonymous):
0, -18 and -54
OpenStudy (anonymous):
dude there is no -18 -54 as an answer only thing near that is 18 54
OpenStudy (welshfella):
please explain
OpenStudy (anonymous):
–6, 12, 48
–6, 18, 54
0, 18, 54
6, 18, 54
thats the possable outcomes
OpenStudy (welshfella):
plug in n = 1
and see what you get
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OpenStudy (anonymous):
then you do 1-1 so thats 0
OpenStudy (welshfella):
a1 = -6 + (1-1)d
OpenStudy (welshfella):
* thats 6 not d
OpenStudy (anonymous):
ya
OpenStudy (anonymous):
ok so the correct answer is D?
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OpenStudy (welshfella):
so whata the first term?
OpenStudy (anonymous):
dude i really think my answer is correct you just do the previous answer -6 every time n goes up 1
OpenStudy (welshfella):
first term = -6 + 0*6 = -6
OpenStudy (anonymous):
Wait the correct one is B
OpenStudy (anonymous):
and what was answer B?
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OpenStudy (welshfella):
second = -6 + (2-1)*6 = ?
OpenStudy (welshfella):
4th term = -6 +3*6 = 12
OpenStudy (anonymous):
ok
OpenStudy (welshfella):
10th = -6 + (10-1)*6
= -6 + 9*6 = ?
OpenStudy (anonymous):
54
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OpenStudy (welshfella):
No
-6 + 54 = ?
OpenStudy (anonymous):
48
OpenStudy (welshfella):
right
A is the correct option
OpenStudy (anonymous):
thanks so much i fanned you:)
OpenStudy (welshfella):
ty yw