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raytiller1
Group Title
What is the 20th term of the arithmetic sequence 2, –4, –10, … ?
 2 years ago
 2 years ago
raytiller1 Group Title
What is the 20th term of the arithmetic sequence 2, –4, –10, … ?
 2 years ago
 2 years ago

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hartnn Group TitleBest ResponseYou've already chosen the best response.0
the formula for 'n'th term is a+(n1)d.....a is first term,d is common difference...,does this help?
 2 years ago

mathsloser56 Group TitleBest ResponseYou've already chosen the best response.1
the difference is 6. use the formula and 'a' is the first number of the sequence which is 2. help?
 2 years ago

raytiller1 Group TitleBest ResponseYou've already chosen the best response.0
this are my choices –130 –124 –118 –112
 2 years ago

raytiller1 Group TitleBest ResponseYou've already chosen the best response.0
@hartnn @mathsloser56
 2 years ago

mathsloser56 Group TitleBest ResponseYou've already chosen the best response.1
do the math, and youll find it.
 2 years ago

hartnn Group TitleBest ResponseYou've already chosen the best response.0
did u put values in formula?its easy calculation...
 2 years ago

raytiller1 Group TitleBest ResponseYou've already chosen the best response.0
idk how to do it thats why i asked.. but thanks.
 2 years ago

mathsloser56 Group TitleBest ResponseYou've already chosen the best response.1
T(n) = a + (n1)d .use this formula for T(20)
 2 years ago

mathsloser56 Group TitleBest ResponseYou've already chosen the best response.1
a is the first number, 2 n is the \[n^{th}\] you want, which is 20 d is the common difference between the numbers, which is 6
 2 years ago
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