![NotYourStudent](/avatars/43082.jpg)
NotYourStudent
19.08.2019 •
Mathematics
What is the sum of a 7-term geometric series if the first term is −11, the last term is −171,875, and the common ratio is −5? −143,231 −36,047 144,177 716,144
Solved
Show answers
More tips
- C Computers and Internet Why is Yandex s robot Bless.yandex.ru Important?...
- F Food and Cooking Fresh and Easy Lemonade in 10 Minutes...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- A Animals and plants How to Grow Lime from a Seed: Simple Tips and Interesting Facts...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
Answers on questions: Mathematics
- M Mathematics Give an example of a research experiment, indicating the independent and dependent variables, as well as the experimental and the control groups....
- M Mathematics Reid and Maria both play soccer. This season Reid scores 4 less than twice the number of goals that Maria scored the difference in the number of goals they scored was...
- M Mathematics Select the correct answer Nia wants to check whether the finance charge applied in her credit card statement is correct. To do this, she needs to calculate the average...
- M Mathematics QUESTION 5 of 10: You have set a par value of 100 steaks. Your inventory says you have 19 on hand from last night. How many should you order and receive from your supplier...
- M Mathematics Solve for N , I can’t get this , I’ll give brainliest to who gets it!!!...
- M Mathematics The histogram shows the number of books read by people participating in a local book club...
- M Mathematics 2. The table top of a side table is triangular shaped with side lengths of 12 inches, 22.5 inches and 25.5 inches....
- M Mathematics A transit company operates commuter train to help people get to the city each day...
- M Mathematics Tom plans to replace a rectangular piece of drywall. Find the area of the piece of drywall that Tom needs to replace....
- M Mathematics The measures of the angles in a triangle are x, 2x, and 3x. The triangle is...
Ответ:
The first step to solving this problem is to find all terms in the sequence. Since this is a geometric sequence, the next term can be found by multiplying the current term by the common ratio.
That means that the second term can be found by: -11×-5 = 55
And the third term can be found by 55×-5 = -275
And so on...
Here are all seven terms:
-11, 55, -275, 1375, -6875, 34375, -171,875
The next step is to add them all up to find the sum which end up as -143,231, which is your final answer.
Ответ: