K.Binks
  • K.Binks
Can someone explain this to me?
Mathematics
katieb
  • katieb
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K.Binks
  • K.Binks
|dw:1438489797514:dw|
nincompoop
  • nincompoop
n + 1 = would be 1 + 1, 2+1, 3+1, 4+1 etc
K.Binks
  • K.Binks
So how would I solve this for the first 4 terms? I'm sure this is probably something simple, but I still don't understand, sorry

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nincompoop
  • nincompoop
anonymous
  • anonymous
this stuff ap or gp?
anonymous
  • anonymous
\[t _{0}=-3\]and\[t _{1}=17\] looks like ap to me with d=20
anonymous
  • anonymous
then you just add 20 to get t_2 and so on
K.Binks
  • K.Binks
add 20? My options are A)17, 14, 11, 8 B)17, 20, 23, 26 C)17, 16, 15, 14 D)17, 15, 13, 11 I thought it was A..
anonymous
  • anonymous
lemme check
anonymous
  • anonymous
it wants you to find something that starts with 17 and ends with -3
anonymous
  • anonymous
it cant be A
K.Binks
  • K.Binks
D?
anonymous
  • anonymous
it could be either C or D
anonymous
  • anonymous
A will never touch -3, it will brush pass -3 but not land on -3
K.Binks
  • K.Binks
So... D or C? Which one is correct though?
anonymous
  • anonymous
you might need to re-read the questions, for D : \[t _{11}=17+(11-1)(-2) = -3\] for C because its a -1 step you will eventually get to -3 no matter what.
K.Binks
  • K.Binks
So go with C?
anonymous
  • anonymous
yea, btw multiple choice questions are common in US?
K.Binks
  • K.Binks
Very common, especially with online classes, which is what this is for. It's just easier to grade I suppose.
anonymous
  • anonymous
i see, our teachers are working freaks...
K.Binks
  • K.Binks
At least with multiple choice the chances of getting it wrong are narrower, so I guess we're lucky. And thankyou for your help!
anonymous
  • anonymous
yw
mathstudent55
  • mathstudent55
What is the circled part? Are you sure you copied the problem correctly? We see t1 = 17. That means the first term is 17. I don't see an equal sign in the circled expression, so I don't know what pattern to follow to find any other term. |dw:1438493213005:dw|

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