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What is the 20th term of the arithmetic sequence 2, –4, –10, … ?
 one year ago
 one year ago
What is the 20th term of the arithmetic sequence 2, –4, –10, … ?
 one year ago
 one year ago

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hartnnBest 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?
 one year ago

mathsloser56Best 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?
 one year ago

raytiller1Best ResponseYou've already chosen the best response.0
this are my choices –130 –124 –118 –112
 one year ago

raytiller1Best ResponseYou've already chosen the best response.0
@hartnn @mathsloser56
 one year ago

mathsloser56Best ResponseYou've already chosen the best response.1
do the math, and youll find it.
 one year ago

hartnnBest ResponseYou've already chosen the best response.0
did u put values in formula?its easy calculation...
 one year ago

raytiller1Best ResponseYou've already chosen the best response.0
idk how to do it thats why i asked.. but thanks.
 one year ago

mathsloser56Best ResponseYou've already chosen the best response.1
T(n) = a + (n1)d .use this formula for T(20)
 one year ago

mathsloser56Best 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
 one year ago
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