I think this way is a lot faster and easier to do by just quickly typing it all into the calculator, so thank you!
Determine the sum of the first 20 terms of the arithmetic sequence in which ... f) the 7th term is 43 and the 13th term is 109 I know you can make two equations : 43 = a + 6d and 109 = a + 12 d And subtract them to get d = 11 But I know there's another way to get d, that y...
Oh. I guess the point of the question was for you to find t12 first by using the general formula so that you could have the last term, which would allow us to use the simpler arithmetic series formula, i.e., n(t1+tn)/2 rather than n/2(2a+(n-1)d) But I'd still like to know ...
Okay, so I know this should be really easy but my mind is just drawing a blank: For each series, calculate t12 and S12 a) 37 + 41 + 45 + 49 + ... Okay so I calculated S12 to be 708, and I know that's right. For t12, I know I can easily find the general formula and then use...
try your best and most of all thik about it because I have to write the same thing.
Thank you so much Reiny!!
I'm learning series and sequences (grade 11). Please check that my steps show I understand what I'm doing/the concept and my answer as well: 5. The consecutive terms of an arithmetic sequences are 3.6, y, 8.2. Find the value of y. This seems to be a sequence question b...
a grocery store sells a 7 ounce bag of rasins for $1.10 and a 9 ounce bag of rasins for $1.46. Which size bag have the lowest price per ounce.
solve the following inequality. write your solution in interval notation. x^3+9x^2-108 less than or equal to 0
the graph of y= -1/4/x-2 (1/4 over x-2) can be obtained from the graph of y=|x| by which transformations a. what is the horizontal shift? a. five units to right b. 2 units to right c. 5 units to left d. 2 units to left b. by what factor is the graphstretched or shrunk vertical...