![anavallesdemiguel2](/avatars/24109.jpg)
anavallesdemiguel2
25.06.2021 •
Mathematics
Please help me with this, i am so confused and don't have enough time
Solved
Show answers
More tips
- S Style and Beauty Intimate Haircut: The Reasons, Popularity, and Risks...
- A Art and Culture When Will Eurovision 2011 Take Place?...
- S Style and Beauty How to Choose the Perfect Hair Straightener?...
- F Family and Home Why Having Pets at Home is Good for Your Health...
- H Health and Medicine How to perform artificial respiration?...
- H Health and Medicine 10 Tips for Avoiding Vitamin Deficiency...
- F Food and Cooking How to Properly Cook Buckwheat?...
- F Food and Cooking How Many Grams Are In a Tablespoon?...
- L Leisure and Entertainment Carving: History and Techniques for Creating Vegetable and Fruit Decorations...
- P Photography and Videography How to Choose the Perfect Photo Paper for Your Images?...
Answers on questions: Mathematics
- M Mathematics The length of arc EF is 5 in. Find the length of the radius....
- M Mathematics ill give brainliest, use the subsitution method to sole the system of equations. choose the correct ordered pair. x+y=10 y=x-6...
- E English As the story progresses, the reader learns that Kathryn is...
- M Mathematics Please help and thanks...
- H History How would you describe Alma Delia Torres life to a friend...
Ответ:
1. Using the formula for nth term ( = a1 * r^(n-1)
the 5th term = (-2)*(1/4)^4
= -2/256 = -1/128 (answer)
2. The 4 terms between 1 and 32 are found as follows:-
a1 = 1 and a6 = 32 so 32/1 = a6/a1
therefore 32/1 = a1r^5 / a1
so r^5 = 32 and r = 2
so 4 terms are a1r, a1r^2, a1^r^3 and a1r^4
= 2, 4, 8, 16 (answer)
3. You need the sum of 10 terms where a1 = -2 and r = 3
S10 = -2 * (3^10 - 1) / (3 - 1)
= -59058
4. Sum to infinity = a1 / (1 - r)
a1 = 1 and r = 1/2
so the answer is 1 / (1 - 1/2)
= 1 / 1/2
= 2 (answer)