Homework Help: Algebra

Posted by mysterychicken on Friday, June 18, 2010 at 10:56am.

Need to get these problems checked--

31. Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common ratio.
a. no
b. yes, common ratio of 14
c. yes, common ratio of 12

I'm stuck between A and B..

32. What are the next three terms of the geometric sequence 5, 15, 45,...?

135, 405, 1215? Not sure about this...

33. What is the area of a square with the dimension of 1 + sqrt of 2?

9.64?

35. Simplify: 2 sqrt of 4 + 2 sqrt of 8

4+ 5.65?

Thanks
-MC

Algebra - Jen, Friday, June 18, 2010 at 3:09pm
31. How are you stuck? There is how much between each number? Take two consecutive numbers and subtract them.\
32. Correct
33. Not sure
35. 2sqrt4+2sqrt8=4+4sqrt2
Algebra - mysterychicken, Friday, June 18, 2010 at 3:48pm
So 31 is B?

-MC

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