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Mathematics 11 Online
OpenStudy (russianboss1):

which value is the 11th term in the sequence: -62,-54,-46,-38,-30,...? A)64 B)10 C)9 D)18 Which value is the 14th term of the sequence: 1/81, 1/27 ,1/9 ,1/3 ,1 ,...? A) 59,049 B) 19,683 C) 2187 D) 6561 Fan and medal Please help

OpenStudy (russianboss1):

@misty1212 @skatergirl147 @Anna1448 @imqwerty

OpenStudy (anonymous):

direct answer or explain?

OpenStudy (anonymous):

first one is A.P.,and it has common difference of +8, use formula\[T _{n}=a+(n-1)d\]

OpenStudy (anonymous):

cause the first on it is adding 8 sooo the 11th is 18 the second one idk

OpenStudy (adi3):

lol http://prntscr.com/a4w1re

OpenStudy (anonymous):

d is common differnce, a is first term, n is term which you need to find, ( in question you need 11th term; so n=11)

OpenStudy (anonymous):

put value and find answer

OpenStudy (anonymous):

second question from G.P., has common ratio of 3

OpenStudy (anonymous):

use formula\[T _{n}=ar ^{n-1}\]where a is first term, r is common ration and n is term which you need to find, put values and solve to find the answer.

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