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
muminat
3 years ago
5

Tell whether each sequence is arithmetic. Justify your answer. If the sequence is arithmetic, write a function rule to represent

it. A. 128, 64, 32, 16, ... B. 3, 3.25, 3.5, 3.75, ...
Mathematics
1 answer:
Darina [25.2K]3 years ago
7 0
A) geometric:
.. a[n] = 128*(1/2)^(n -1)

B) arithmetic:
.. a[n] = 3 +0.25*(n -1)

_____
As you know, the general term of an aritnmetic sequence is
.. a[n] = a[1] +d*(n -1)
.. ... where a[1] is the first term (n=1) and d is the common difference. n is the term number.
You might be interested in
Can someone help me with this?
Mandarinka [93]

Answer:

Step-by-step explanation:

Area of rectangle = length * width

                             = (x + 4) (5x)

                             = x *5x + 4 *5x

                            = 5x² + 20x

Perimeter of rectangle = 2*(length + width)

                                     = 2*(x + 4 + 5x)

                                     = 2*(6x + 4)

                                   = 2*6x + 2 *4

                                     = 12x + 8

4 0
3 years ago
a figure has been dilated by a scale factor of 2. which transformation could be used to prove the figures are similar using the
mash [69]

Answer:

translation maybe

4 0
3 years ago
Free brainliest<br> cuz i'm in a good mood lol
Marianna [84]

Answer:

Thanks!

Step-by-step explanation:

Hey Again hows your day?

6 0
3 years ago
What is the y-intercept of the line -7x-5y=-45?
Goshia [24]

Answer:

The y-intercept is at the point (0, 9).

Step-by-step explanation:

WE have the y intercept when x = 0:

-7(0) - 5y = -45

-5y = -45

y = -45/-5 = 9.

7 0
3 years ago
Read 2 more answers
-4 1/2 divided by 4 written as a fraction
Semmy [17]
-1 1/2 is the answer. I'm making 20 characters.
3 0
3 years ago
Other questions:
  • Use decimal numbers to write an expression that represents the length of the walls that Valerie measured?
    6·1 answer
  • Find a. b. if a =10i+4j and b = 3i+4j
    14·2 answers
  • What is the measure of the missing angle in the figure below?
    14·2 answers
  • Y = 4x - 2<br> y = x + 3
    5·1 answer
  • There are more inches on a football field (100 yards) than there are centimeters on a 28 meter basketball court.
    13·1 answer
  • Sonya wants to put a ribbon border along the edge of her round tablecloth. The ribbon is sold in one-inch increments. If the dia
    10·1 answer
  • F=ma. Solve the equation for a
    13·1 answer
  • I’ll give you BRAINLEST PLEASE HELP
    10·1 answer
  • Show me step by step multiplication on how to answer : 1 2/5 x 1/4
    5·1 answer
  • How to do estimate 81=25+8x​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!