Recent content by DatGuy

Thanks for your help! I had a feeling this question was deceptively easy... My student is in Grade 11 math, so this question seems inappropriate for their level of math if this is really the only way to go about it.

Uhh, nvm. It seemed to make sense but when I tested it, it doesn't seem to work! I made my own sequence: 1, 2.5, 6.25, 15.625, 39.0625, so r=2.5. If I divided Sum(5) = 64.4375 by Sum(3) = 9.75, then square root that answer, I would end up with 2.571. Will the r that comes out not be exact...

That makes sense. Thanks so much for your help; I really appreciate it!

I don't know the exact sums, 56 and 84 or something similar? All I need are some pointers as to what to do and I should be able to figure out the rest :) thanks!

Hi. I'm currently tutoring this student with High school math, and I'm completely stumped on this question that he was asked on his test. I'm hoping the community can help me help my student! Homework Statement The student was presented with two sums of a geometric sequence (eg, Sum of...