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
MakcuM [25]
3 years ago
12

Write the explicit formula for the geometric sequence.

Mathematics
1 answer:
netineya [11]3 years ago
8 0
We are given the series of <span>a1 = -5 a2 = 20 a3 = -80. In this case, we can see that this is a geometric sequence with a geometric ratio equal to 20/-5 = -80/ 20 or equal to 4. Hence, r is equal to 4, a1 is equal to -5. 

The geometric sequence formula is an = a1*r^(n-1) = -5 * (-4)^ (n-1) where n is an integer. Answer is B.</span>
You might be interested in
Help will give star and brainlest or what ever is the highest you can give a comment!!!​
Ray Of Light [21]

Answer:

puppies - 22

Step-by-step explanation:

since the ratio is 2:3, there are 5 parts in total. (2+3=5)

55/5=11 then multiply by parts

puppies- 2×11=22

adults- 3×11=33

check answer by adding- 22+33=55

3 0
3 years ago
Read 2 more answers
Please answer! will give brainliest
hjlf

Answer:

1.4

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Please answer quick
Leno4ka [110]
By calculating monthly incom and debt the 2nd one

8 0
3 years ago
Make a the subject of a2+b2=c2
wel

Answer:

a=\sqrt{c^2-b^2

⇒ a=\sqrt{(c+b)(c-b)}        [Factorized form]

Step-by-step explanation:

Given expression:

a^2+b^2=c^2

We need to make a the subject.

In order to do that we need to solve the expression for a in terms of b and c

We have,

a^2+b^2=c^2

Subtracting both sides by b^2

a^2+b^2-b^2=c^2-b^2

a^2=c^2-b^2

Taking square root both sides in order to remove square of a

\sqrt{a^2}=\sqrt{c^2-b^2}

a=\sqrt{c^2-b^2

The difference of squares can be factorized and written  as:

a=\sqrt{(c+b)(c-b)}    [difference of squares x^2-y^2=(x+y)(x-y) ]

4 0
3 years ago
What is the slope of the line?
kramer
Y sub 2- y sub 1 over x sub 2- x sub 1
4 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate 110/11. <br><br> A. 10<br> B. 9<br> C. 12<br> D. 11
    8·2 answers
  • Which of the following has eight faces? A. Icosahedron B. Octahedron C. Dodecahedron D. Tetrahedron
    10·2 answers
  • Given points A(3,7) and B(8, -3) are the end points of AB, calculate the coordinates of M, the midpoint.​
    11·1 answer
  • Anyone know answer thankss
    15·1 answer
  • Evaluate the expression below at x= 4.
    15·1 answer
  • Graph the inequality x+3y≥6
    15·1 answer
  • Find the slope of (4,4) (-6-4) plz need this like in 20 minutes
    10·1 answer
  • ( 0 0
    14·1 answer
  • Calculate the volume of this cylinder, giving your answer to 1 decimal place.<br>20 cm<br>9 cm​
    12·1 answer
  • Solve the inequality <br> 3(x-2)&gt;-3
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!