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
nirvana33 [79]
3 years ago
8

What is the formula for the following geometric sequence?

Mathematics
2 answers:
Lelechka [254]3 years ago
8 0

Answer:

Correct answer:  Third answer  aₙ = -5 · 2⁽ⁿ ⁻ ¹⁾

Step-by-step explanation:

Given:

-5, -10, -20, -40,.....

First term       a₁ = -5

Second term a₂ = -10

Third term     a₃ = -20

Common ratio or quotient

q = a₂ / a₁ = a₃ / a₂ = -10 / -5 = -20 / -10 = 2

q = 2

First term  a₁

Second term a₂ = a₁ · q = a₂ · q²

Third term     a₃ = a₂ · q = a₁ · q³

.....................................................

n-th term aₙ = a₁ · q⁽ⁿ ⁻ ¹⁾

aₙ = -5 · 2⁽ⁿ ⁻ ¹⁾

God is with you!!!

NeX [460]3 years ago
5 0

Answer:

an = -5 · 2 n - 1

Hope it helped <3

You might be interested in
If x2 = 50, what is the value of x? (3 points)
kkurt [141]

Answer:

plus or minus square root 50

Step-by-step explanation:

x^2 = 50

Take square root of both sides

x = +/ - √50

Answer:

plus or minus square root 50

5 0
4 years ago
If option A is 20 dollar payment and option B requires 50 dollar. the opportunity cost of option A would be _____ and option B w
Ghella [55]

Answer: B

Explanation:

6 0
3 years ago
Directions: Given triangle ABC where A(3,4), B(8,4) and C(8,9), graph and
lesya692 [45]

Answer:

im sorry i dont know

Step-by-step explanation:

3 0
3 years ago
Each lap around a track is 1/4 mile. Hadley jogged 3 laps around the track. How many yards did Hadley jog
Katena32 [7]

Answer:

Hadley jogged a total of 1,320 yards.

Step-by-step explanation:

8 0
4 years ago
The square of a number minus three times a number equals<br> negative two.
lidiya [134]

Answer:

The number is either 2 or 1

Step-by-step explanation:

Where x is the unknown number, the square of may be interpreted as x², then the  square of the number minus three times the number will be equivalent to

x² - 3x

If this is equal to 2 then

x² - 3x = -2

such that

x² - 3x + 2 = 0

This may be solved using factorization of quadratic equation

x² - 2x -x + 2 = 0

x(x - 2) -1(x- 2) = 0

(x -2)(x-1) = 0

x = 2 or 1

8 0
3 years ago
Other questions:
  • Megan and Sam were solving a system of equations. They both noticed that the two lines had different slopes. Megan said that bec
    14·2 answers
  • ANSWER ASAP!!<br><br>Describe how several jobs or professions might use scale drawings at work.
    13·1 answer
  • Idk how to find percentage
    10·1 answer
  • Please help asap for 50 points uwu
    9·2 answers
  • A random sample of 747 obituaries published recently in Salt Lake City newspapers revealed that 344 (or 46%) of the decedents di
    8·1 answer
  • What is the slope of the line through (6,9) and (7, 1)?
    8·2 answers
  • Please help me! i'll mark you brainliest <br> 20 points, (maths)
    7·1 answer
  • Please help giving brainliest!
    10·2 answers
  • A = 18, b = 12, A = 27°
    10·1 answer
  • How to factorise and group the following p-q-x(q-p)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!