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
igomit [66]
3 years ago
11

What is the sum of the geometric sequence -4, 24, -144, if there are 6 terms

Mathematics
1 answer:
Ksenya-84 [330]3 years ago
4 0

Answer:

The sum is 26,660

Step-by-step explanation:

we know that

The formula of the sum in a geometric sequence is equal to

S=a1[\frac{1-r^{n}}{1-r}]

where

a1 is the first term

r is the common ratio  

n is the number of terms

we have

a1=-4, a2=24, a3=-144

Find the value of r (common ratio)

r=a2/a1

r=24/(-4)=-6

so

a1=-1

r=--6

n=6

substitute in the formula

S=(-4)[\frac{1-(-6)^{6}}{1-(-6)}]

S=(-4)[\frac{1-(-6)^{6}}{7}]

S=26,660

You might be interested in
Help PLZZ no files PLZZ
frozen [14]

Answer:

34m of glass

Step-by-step explanation:

(I'm a visual learner so I'll have a picture of my work as well)

okay, you're going to want to separate this into a large rectangle and a triangle.

From there you're going to calculate the area of both.

rectangle formula:

A= L*H

Triangle Formula:

A= (L*H)/2

Then you just plug in the numbers and calculate, getting 18 for the rectangle and 16 for the triangle. 18+16 = 34

You add the two areas together as shown above, and then you have your area for the whole shape!

5 0
3 years ago
-54/-9 - (-5)= need help ASAP
Semenov [28]

<em>So</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>is</em><em> </em><em>1</em><em>3</em><em>.</em><em>5</em>

<em>Look</em><em> </em><em>at</em><em> </em><em>the</em><em> </em><em>attached</em><em> </em><em>picture</em><em>⤴</em>

<em>Hope</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>help</em><em> </em><em>u</em><em>.</em><em>.</em>

4 0
3 years ago
Read 2 more answers
Solve the inequality ||x-4|-2|&lt;3
Shkiper50 [21]

Answer: Solve the inequality:

||x-4|-2|<3

Step-by-step explanation:Solve the inequality ||x-4|-2|<3

4 0
3 years ago
What are the factors of 45?
podryga [215]
Factors: Numbers that can multiply into a certain number.

The factors of 45 are:
1 (x 45)
3 (x 15)
5 (x 9)
9 (x 5)
15 (x 3)
1 (x 45)


4 0
3 years ago
Read 2 more answers
6 pi equals how many degrees
pantera1 [17]
6 oi equals 30 degrees
4 0
2 years ago
Other questions:
  • A bakery offers a sale price of $3.25 for 3 muffins. What is the price per dozen?
    11·1 answer
  • Which of the following functions gives the length of the base edge, a(V), of a right square pyramid that is 8 inches tall as a f
    11·1 answer
  • Use substitution to solve the systems of equations. <br><br> y=x+1.75<br> 4x-2y=4
    14·2 answers
  • PLZ HELP ME !!! 25 POINTS!!!!
    10·2 answers
  • The slope represents the ________ of a line.
    10·1 answer
  • Pls answer by step by step
    8·1 answer
  • Which effect of reduced stress is a social benefit?
    13·2 answers
  • Find the inverse function of y=3x-7
    15·1 answer
  • Em dois retângulos semelhantes, a ampliação foi de 10 cm por 12 cm, para 20 cm por 24 cm, qual a razão de semelhança (K)?
    14·1 answer
  • I need help with this
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!