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sammy [17]
3 years ago
8

3, 9, 81, 243 . . . is an example of an infinite arithmetic series.. True or false?

Mathematics
2 answers:
oee [108]3 years ago
4 0

Answer: The answer is False.


Step-by-step explanation: In an arithmetic series with first term a and common difference d, the n-th term is given by

a+(n-1)d.

The given sequence is - 3, 9, 27, 81, 243, ...

Here, a=3 we cannot find the value of d, since 9-3≠243-81.

So, the given sequence is not an arithmetic sequence. Furthermore, it is an infinite geometric sequence with first term 3 and common ration also 3.

Thus, the answer is False.


Mumz [18]3 years ago
3 0

The statement “3, 9, 81, 243 is an example of an infinite arithmetic series” is FALSE. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

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EleoNora [17]

Answer:

Hi and heres your answer!

Step-by-step explanation:

The crisis of biodiversity will lead to a food crisis for humans because:

1.No varieties in certain foods like plants and animals that are healthy

2.The Less food there is,more animals go extinct which means humans will go extinct too.

and finally 3: Without certain types of species like the bee, humans have no chance of survival (since bees pollinate flowers,fruits,and plants which could be used for human consumption and medicine)

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2 years ago
Anna would like to purchase a new bike that costs $205. She already has $31 saved. If she saves a maximum of $12 a week, the fol
Dmitrij [34]

Answer:

It will take at least 15 weeks

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12w+31 ≥ 205

Subtract 31 from each side

12w+31-31 ≥ 205-31

12w ≥ 174

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12w/12 ≥ 174/12

w ≥ 14.5

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5 0
3 years ago
Read 2 more answers
Y = -5x + 15 2x + y = 12
Nana76 [90]

Answer:

x = 1, y = 10

Step-by-step explanation:

y = -5x + 15 --- Equation 1

2x + y = 12 --- Equation 2

Substitute y = -5x + 15 into Equation 2:

2x + y = 12

2x - 5x + 15 = 12

Evaluate like terms.

15 - 3x = 12

Isolate -3x.

-3x = 12 - 15

Evaluate like terms.

-3x = -3

Find x.

x = -3 ÷ -3

x = 1

Substitute x = 1 into Equation 2:

2x + y = 12

2(1) + y = 12

2 + y = 12

Isolate y.

y = 12 - 2

y = 10

4 0
3 years ago
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3 years ago
Select a counter-example that makes the conclusion false.
Softa [21]
A counter-example could be

There are more than 3 marbles in the bag, and the other ones are red.

Hope this helps!
4 0
3 years ago
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