1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
barxatty [35]
3 years ago
13

Find the sum of an 8-term geometric sequence when the first term is 7 and the last term is 114,688 and select the correct answer

below.
Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0
It is multiplied by 4 each time.
VARVARA [1.3K]3 years ago
3 0
First term a1 = 7
8th term a1*r^7 = 114688

so r^7  =   114688/7 = 16384

r = 16384 ^ (1/7)  = 4

S8  = a1 * (r^n - 1 )/ (r - 1)   = 7 * (4^8 - 1) /  3  =   152,915  answer
You might be interested in
(7x-12)+(13-2x)<br><img src="https://tex.z-dn.net/?f=%287x%20-%2012%29%20%2B%20%2813%20-%202x%29" id="TexFormula1" title="(7x -
Julli [10]
The answer is : 5x+1
5 0
3 years ago
express each of the following as product of its prime factors, giving your answer in expanded form. a) 24. b) 63. c) 84. d) 150​
Alborosie
To answer this question, you can use a factor tree, or the table thing (I forgot what it’s called.)
You divide the number by one of its PRIME factors, until there is only one left. The numbers you divided it by are written as shown.
Hope this helps. :)
3 0
3 years ago
Write 18 1/4 as a decimal ​
nevsk [136]

Answer:

18.25

Step-by-step explanation:

1/4 = 0.25

7 0
3 years ago
Read 2 more answers
250% increase of 28,000?
Phoenix [80]
250% can be converted into a fraction 250/100 or into a decimal 2.50.
 so  250% of 28,000 is 2.50 times 28,000 which is 70,000.
28,000 is increased by 70,000 to 98,000 


6 0
3 years ago
Read 2 more answers
Consider the system of inequalities and its graph. y ≤ –0.75x y ≤ 3x – 2 In which section of the graph does the actual solution
AlekseyPX
The answer to your question is 4
8 0
3 years ago
Read 2 more answers
Other questions:
  • Evaluate if x = 1 , y = 3 , and z = 5<br><br> |5z - 2y|
    5·1 answer
  • Find sin^4(a) + cos^4(a), if cos(a) + sin(a) = 1/3
    12·1 answer
  • What is (x) in this problem 3/5=(-x)+1
    13·1 answer
  • The Siberian Husky is a medium dog, weighing between 16-27kg (35-60lbs). These dogs have strong pectoral and leg muscles, allowi
    6·2 answers
  • Can you help just answer by putting
    15·2 answers
  • Match the expressions to their corresponding Locations
    14·1 answer
  • What is the solution to the system of equations?
    6·1 answer
  • Drag each scenario to show whether the final result will be greater than the original value, less than the original value, or th
    15·2 answers
  • What is the radius of the red circle? What is the radius of the blue circle?
    10·1 answer
  • Your yard is a mess, and you decide to hire a landscaper. The garden pros charges 50$ consultation fee plus 30$ per hour for the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!