Thursday

December 18, 2014

December 18, 2014

Posted by **Piwo** on Thursday, April 12, 2012 at 9:21am.

Could you please help me find the third term of the new sequence.

Thank you.

- Math -
**Steve**, Thursday, April 12, 2012 at 11:31amAS: a+2n

GS: b*2^(n-1)

a+b = 1

a+2 + 2b = 7

a + b = 1

a + 2b = 5

b = 4

a = -3

-3 + 2n: -3 -1 1 3 5

4*2^(n-1): 4 8 16 32 64

sum: 1 7 17 35 69

Looks like 17

**Answer this Question**

**Related Questions**

Maths - 1..The first 2 terms of a geometric progression are the same as the ...

math - Determine whether each sequence is arithmetic or geometric. Find the next...

Maths - Eric thinks of 2 sequences.One is geometric and the other arithmetic....

Can someone help me?! - The 1st, 5th and 13th terms of an arithmetic sequence ...

Math - first three terms of a geometric sequence are the same as the 1st, 9th ...

Algebra - Determine whether each sequence is arithmetic or geometric. Find the ...

algebra - can you check my answers please? What are the first three terms of the...

7th Grade Math for Steve.. or Ms. Sue - Determine whether each sequence is ...

pre algebra - solve whether the sequence is arithmetic or geometric if it is ...

algebra - Determine whether each sequence is arithmetic or geometric. Find the ...