Friday

August 22, 2014

August 22, 2014

Posted by **Speedo** on Saturday, September 7, 2013 at 3:02pm.

It is not 48.

- mAtH -
**Steve**, Saturday, September 7, 2013 at 4:11pma+22d = 16

a+27d = 24

a = -96/5

d = 8/5

-96/5 + 42*8/5 = -96/5 + 336/5 = 240/5 = 48

If 48 is marked wrong, the key is in error. You could have checked it yourself.

- mAtH -
**Speedo**, Saturday, September 7, 2013 at 4:33pmThis is what you did wrong, i think. YOu multiply not add.

- mAtH -
**Steve**, Saturday, September 7, 2013 at 4:47pmOr, look at it this way. From T23 to T28 is 5 terms, and the value grew by 8.

From T28 to T43 is 15 terms = 3*5, so the value will grow by 3*8, or 24.

24+24 = 48

**Related Questions**

MaTh - The 23rd term in a certain geometric sequence is 16 and the 28th term in ...

MaTh - The 23rd term in a certain geometric sequence is 16 and the 28th term in ...

Math - A sequence is formed by adding together the corresponding terms of a ...

MaTh - A certain 300-term geometric sequence has first term 1337 and common ...

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

math - in a certain geometric sequence, the third term is 8 and the sixth term ...

math - in a certain geometric sequence, the third term is 8 and the sixth term ...

math - suppose an arithmetic sequence and a geometric sequence with common ...

Geometric Sequence - Find the fourth term (a4) of geometric sequence if the ...

Math - Arithmetic & Geometric - 1) Given the terms a35 = 1238 and a70 = 1483 of ...