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
oee [108]
3 years ago
14

What is the summation notation for the geometric sequence 1/2+2+8+32+128

Mathematics
2 answers:
love history [14]3 years ago
6 0
170.5 is the answer from the TI-84

expeople1 [14]3 years ago
4 0

Answer:

The sum of the given geometric series is:

                             170.5

Step-by-step explanation:

We know that for any geometric series have 'n' terms with first terms as: ''a'' and common ratio of the terms in the series as: 'r'

We get the sum of the series by the formula :

S_n=a\times (\dfrac{r^n-1}{r-1})

From the question we have:

a=1/2 , r=4 ( Since each term is the series is 4 times it's preceding term) and n=5  (as there are five terms in the series )

Hence, the sum of the series is:

S_5=\dfrac{1}{2}\times (\dfrac{4^5-1}{4-1})\\\\\\S_5=\dfrac{1}{2}\times (\dfrac{1023}{3})\\\\\\S_5=170.5

Hence, the sum of the series is: 170.5

You might be interested in
Find an equation of the line with the given slope that passes through the given point. Write the equation in the form Ax + By =
PIT_PIT [208]

Answer:

3x - y = 10

Step-by-step explanation:

y-5 = 3(x-5)

y - 5 = 3x-15

-3x+y= -10

3x - y = 10

5 0
3 years ago
Help pls not graded test
Arte-miy333 [17]

The missing angle of the given triangle  is 59°.

What is vertically opposite angles?

  Angles that are vertically opposed to one another are always equal to one another. A vertical angle and the angle to which it is next are also supplementary angles; that is, they sum up to 180 degrees. As an illustration, if two lines connect to form an angle, say X=45°, then the angle's opposite angle is also 45°.

Here consider angle with 31° and 49° triangle is 1. We know that sum of all angles in triangle is add upto 180°. Then,

⇒ 49°+31°+x = 180°

⇒ 80° + x= 180°

⇒x= 180°-80°=100°

Then unknown angle in triangle 1 ia 100°.

Now according to the vertically opposite angle theorem , opposite angles are equal to each other. Then ,

In triangle 2 angle is 100° and 21°. Then missing angle is,

⇒ 100°+21°+missing angle =180°

⇒Missing angle = 180°-100°-21°

⇒Missing angle = 59°

Therefore the answer is 59°.

To learn more about Vertical angle ,

brainly.com/question/18450499

#SPJ13

3 0
1 year ago
Create an array for<br>4x5.​
Artist 52 [7]
Basically, like this:
• • • • •
• • • • •
• • • • •
• • • • •
8 0
3 years ago
Can someone plz help me ASAP
Andrews [41]
Day 3 is double than day two judging by hours baked... it's 96 cookies
5 0
3 years ago
20 points! Please help! Which graph represents the function?
Arte-miy333 [17]
I’m pretty sure they both are functions
6 0
3 years ago
Other questions:
  • Harold, Clara, and Mark each chose a different lunch from three categories:
    8·1 answer
  • Lara solved an equation incorrectly, as shown below:
    9·2 answers
  • At the start of 2014 lucys house was worth ?200 000. The value of the house increased by 5% every year. Workout the value of her
    11·1 answer
  • Evaluate. write in simplest form. 6-b/3a for a = 10, b = 9
    14·1 answer
  • ASAP FASTER THAN THAT ITS DUE IN LIKE 30 OR LESS MINuTES
    5·1 answer
  • Remove the largest possible common factor check your answer by multiplication
    9·1 answer
  • Write a description for each inequality....<br> 27 − 2 b ≤ −6
    9·1 answer
  • When rounded to the hundreds place, which of the numbers below round to 23,400? Select all that apply.
    11·2 answers
  • Which polygon is a pentagon?​
    14·1 answer
  • Which of the following shows that polynomials are closed under subtraction when polynomial 5x − 6 is subtracted from 3x2 − 6x +
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!