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Alborosie
3 years ago
12

Which is answer is correct

Mathematics
1 answer:
horsena [70]3 years ago
6 0

Answer:

i think it is b and c im trying

Step-by-step explanation:


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Can someone explain what geometric sequences are?
Fed [463]

Explanation:

A sequence is a list of numbers.

A <em>geometric</em> sequence is a list of numbers such that the ratio of each number to the one before it is the same. The common ratio can be any non-zero value.

<u>Examples</u>

  • 1, 2, 4, 8, ... common ratio is 2
  • 27, 9, 3, 1, ... common ratio is 1/3
  • 6, -24, 96, -384, ... common ratio is -4

___

<u>General Term</u>

Terms of a sequence are numbered starting with 1. We sometimes use the symbol a(n) or an to refer to the n-th term. The general term of a geometric sequence, a(n), can be described by the formula ...

  a(n) = a(1)×r^(n-1) . . . . . n-th term of a geometric sequence

where a(1) is the first term, and r is the common ratio. The above example sequences have the formulas ...

  • a(n) = 2^(n -1)
  • a(n) = 27×(1/3)^(n -1)
  • a(n) = 6×(-4)^(n -1)

You can see that these formulas are exponential in nature.

__

<u>Sum of Terms</u>

Another useful formula for geometric sequences is the formula for the sum of n terms.

  S(n) = a(1)×(r^n -1)/(r -1) . . . . . sum of n terms of a geometric sequence

When |r| < 1, the sum converges as n approaches infinity. The infinite sum is ...

  S = a(1)/(1-r)

8 0
3 years ago
Aria is a songwriter who collects royalties on her songs whenever they are played in a
fiasKO [112]

Answer:

number of commercial=4

number of movies=4

4 times 20=80

80 times 4= 320

320+80=400

Step-by-step explanation:

7 0
4 years ago
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How many solutions does this have? 2x = 2x - 9<br> A. No<br> B. One<br> C. Two<br> D. Infinity
Andru [333]

Answer:

A. No solutions

Step-by-step explanation:

2x-2x=-9

0= -9

Since 0 does not equal -9, there are no solutions.

8 0
4 years ago
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0.25 Feet for each friend because 2.5/10=0.25
5 0
3 years ago
polynomial function of degree 4 with -1 as a zero of multiplicity 3 and 0 as a zero of multiplicity 1
iren [92.7K]
\bf \begin{cases}&#10;x=-1\implies &x+1=0\\&#10;x=0\implies &x=0&#10;\end{cases}&#10;\\\\\\&#10;\stackrel{\textit{multiplicity of 3}}{(x+1)^3}~~\stackrel{\textit{multiplicity of 1}}{(x)^1}=\stackrel{original~polynomial}{0}&#10;\\\\\\&#10;(x^3+3x^2+3x+1)(x)=\stackrel{y}{0}\implies x^4+3x^3+3x^2+x=y
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3 years ago
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