Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
helpmeplz311
Group Title
How to Work out the nth term in the sequences below?
http://s1274.beta.photobucket.com/user/hmp311/media/7778AD32326148EBBA9D119F07AA70C8100400000419CAFB720A_zpsaf8eeb58.jpg.html?sort=3&o=0
Note: I keep asking this and I get a formula:
nth term = dn + (a  d)
 2 years ago
 2 years ago
helpmeplz311 Group Title
How to Work out the nth term in the sequences below? http://s1274.beta.photobucket.com/user/hmp311/media/7778AD32326148EBBA9D119F07AA70C8100400000419CAFB720A_zpsaf8eeb58.jpg.html?sort=3&o=0 Note: I keep asking this and I get a formula: nth term = dn + (a  d)
 2 years ago
 2 years ago

This Question is Closed

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
@lgbasallote @nincompoop
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
Please help:(
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
what exactly are you asking?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
sequence of what?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
I dont undersyand how to create a formula.
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
The worksheet is at the link above.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
i see many sequences
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
It says you have to work out the terms asked for, create a formula.
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
Actually,all of them. I uave to turn this in today.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
well...the formula for arithmetic sequence is what you say \[\huge a_n = a_1 + (n1)d\] where: an is the last term a1 is the first term n is the number of terms d is the common difference
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
Please know I am in eight grade.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
for example 1, 9, 17, 25, 33,... find the 50th term an would be a50 because a50 is the last term a1 will be 1 because it's the first term n would be 50 because you're looking for the 50th term so you have 50 terms d would be 8 because it adds 8 each number (1 + 8 = 9; 9 + 8 = 17; etc) so if you substitute.. \[\huge a_{50} = 1 + (50  1)8\] \[\huge a_{50} = 1 + 49 (8)\] \[\huge a_{50 } = 1 + 392\] \[\huge a_{50} = 393\] so the 50th term is 393 in my example
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
if you're old enough to learn sequences then you're old enough to learn this
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
Ok..'reading'
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
may i try o e?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
From my homework.
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
ill write in othere first amd then type it on here.
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
a44=8+(51)9
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
number 7
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
is that correct?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
let me check...
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
number 7 is looking for the 50th term not the 44th
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
You said a1 was the last term,which in this case is 44
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
i think you're confused... 8, 17, 26, 35, 44, .... this doesn't mean 44 is the last term "..." means the sequence continues 8, 17, 26, 35, 44, 53, 62, 71 and so on
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
that means the last term is the 50th term because that's what you're looking for make sense?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
well, if we erased the 44, would it be correct?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
nope. you used 5 as your n
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
im sorry.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
like i said, the sequence doesn't stop at 44 so there are more than 5 terms
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
since you're looking for the 50th term, there would be 50 terms make sense?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
good. so rewrite your solution
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
wait it shouldve been 50 right
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
a50=8+(501)9
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
right. now solve it
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
thatll give me the 50th term?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
do you solve for a in the a50?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
no... a50 means \(a _{50}\) that means 50th term
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
just solve the right side
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
how'd you get 2?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
umm,let me tru again
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
web2.0calc
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
ooo the a50 doesnt matter when solving
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
i lost connection
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
was i right?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
you solved 8 + (501)9 right?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
did you use a calculator?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
yes i was supposed to use order of operations?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
i see what you did (8 + 50  1)* 9
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
that is wrong
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
*sigh* ok
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
you have to do (50 1) then multiply it to 9 then add 8
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
order of ops.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
PEMDAS PARENTHESIS expoent MULTIPLICATION division ADDITION subtraction did you forget this?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
no, thats what order of operations is
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
parenthesis is (50  1) multiplication is (501)*9 addition is 8 + (501)*9
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
that means you do 50  1 first
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
o. so, i use that formula, substitute,and solve right side?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
THANK YOU
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
welcome
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
hi amistre
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
i hope im not in trouble @amistre64
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
finally got to the end of it :) howdy!
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
howdy,sir
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
you mean the end of my endless question?
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
i havent seen the links yet, but lgbas stuff looks good so far yeah, these things can get rather lengthy, but thats the way we like to see them. lots of interaction and studying instead of rote answers
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
am i in trouble
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
lol, not that i can see :) as long as your trying to learn that material you are fine
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
yes imam.
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
they all look to be arithmetic progressions, so you can apply the same techniques to all of them
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
i'd like to know though @amistre64 do you know what dn + (ad) means?
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
it looks like the formula for arithmetic progression....but it looks weird
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
its another way to express the sequence but for n starting at 0 i believe
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
amistre can i fan u
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
dn looks really weird
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
dn + (ad) dn  d + a d(n1) + a
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
you can fan whomever you wish
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.2
...clever
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
i think if i get anymore fans the site will collapse into an infinitly large black hole tho so be careful if you do :)
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
have you gone over how to find the terms used: a, d, n ?
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
good, cause one you know how to get those, the rest is just simple arithmetic
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
*cause once you know
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
d common difference
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
how do you find the common difference of the sequence?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
subtract.
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
right, subtract the first term from the second term problem 10: 7 ,13, 19, ... d = 137 = 6 right?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
yes sirr
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
and what does the "a" in the formula refer to?
 2 years ago

helpmeplz311 Group TitleBest ResponseYou've already chosen the best response.1
a refers to a term
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
yes, but there is "a" special a that we need to use in the formula itself. the FIRST term. In the problem im working thru, that would be: 7 d=6, a=7 and what does "n" mean?
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
im going to use a different but equal notation for the formula: \[f(n)=a+d(n1)\] \[f(n)=7+6(n1)\]
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
you can replace \(f(n)\) with \(a_n\) if you want, its just a placeholder
 2 years ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.0
the "n" is reserved for the position of the term we want to find. in this case, the 90th term \[f(n)=7+6(n1)\] \[f(90)=7+6(901)\] \[f(90)=7+6(89)\] \[f(90)=7+534\] \[f(90)=541\]
 2 years ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.