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
mash [69]
3 years ago
6

Show how the following sequences is an arithmetic or not please help me ​

Mathematics
1 answer:
serious [3.7K]3 years ago
5 0

Answer:

not arithmetic

Step-by-step explanation:

An arithmetic sequence has a common difference d between consecutive terms.

Given

T_{n} = 2n² - 1

Substitute in n = 1, 2, 3, 4 to generate the first 4 terms of the sequence

T_{1} = 2(1)² - 1 = 2 - 1 = 1

T_{2} = 2(2)² - 1 = 8 - 1 = 7

T_{3} = 2(3)² - 1 = 18 - 1 = 17

T_{4} = 2(4)² - 1 = 32 - 1 = 31

check the difference between consecutive terms

7 - 1 = 6

17 - 7 = 10

31 - 17 = 14

The differences are not common hence not an arithmetic sequence

You might be interested in
A cinema has 100 seats if 90 people are inside what percentage of seats are taken
weqwewe [10]

Answer:

90%

Step-by-step explanation:

Since 90/100 seats are taken then we can say;

90/100=9/10=.90*100=90%

6 0
3 years ago
Read 2 more answers
I need help please and thank you
mrs_skeptik [129]
A triangle is 180 so 180-110=70 and 70 divided by 2 is 35 so the other two angles are 35 degrees
8 0
2 years ago
What is the sum of the polynomials? plzz help
lina2011 [118]
I think its the... second.... please correct me if im wrong :(

5 0
3 years ago
Read 2 more answers
Which graph shows the solution to the system of equations 2x + y = 4 and 3x - 2y = 6?
defon
Answer: 2,0

hope this helps :)

4 0
3 years ago
01:36:08
Angelina_Jolie [31]

Answer:

check online for more information

7 0
2 years ago
Other questions:
  • Adaline is designing a garden in the shape of a 45º-45º-90º triangle, with an area of 32 ft2. To the nearest foot, how much fenc
    8·2 answers
  • Steve is analyzing two linear functions, f(x) and g(x). Will they intersect?
    11·1 answer
  • Evaluate ƒ(x ) = x 2 + 1 for ƒ(-1).<br><br> Can someone explain how you figure this?
    12·1 answer
  • What is a common factor for x^2-9 and x^2-5x+6
    8·2 answers
  • HALP<br> Solve: |y + 8| ≥ 3
    10·2 answers
  • pls pls pls pls help :( im really bad at math and im trying so hard not to fail... i will mark brainliest!
    13·1 answer
  • 2x + 2y = -2<br> 3x - 2y = 12<br> Answer:
    9·1 answer
  • HELP ME WITH BOTH OF THEM!! ​HELP
    10·2 answers
  • Plz i need some help =(
    10·2 answers
  • A. Find the length of the midsegment of an equilateral triangle with side lengths of 12.5 cm.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!