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Reika [66]
2 years ago
6

Casey likes to run she runs an extra 1/4 mile each day on the last day she ran 1 1/4 if she ran 1/2 her first day for how many d

ays has she been running?
Mathematics
1 answer:
Ray Of Light [21]2 years ago
4 0
Casey has been running for 3 days
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the graph shows the first five terms in a geometric sequence what is the iterative rule for the sequence​
algol [13]

The iterative rule for the sequence is a_n = 8 · ( 0.5 )ⁿ ⁻ ¹

<h3>Further explanation</h3>

Firstly , let us learn about types of sequence in mathematics.

Arithmetic Progression is a sequence of numbers in which each of adjacent numbers have a constant difference.

\boxed{T_n = a + (n-1)d}

\boxed{S_n = \frac{1}{2}n ( 2a + (n-1)d )}

<em>Tn = n-th term of the sequence</em>

<em>Sn = sum of the first n numbers of the sequence</em>

<em>a = the initial term of the sequence</em>

<em>d = common difference between adjacent numbers</em>

Geometric Progression is a sequence of numbers in which each of adjacent numbers have a constant ration.

\boxed{T_n = a ~ r^{n-1}}

\boxed{S_n = \frac{a( 1 - r^n ) }{1 - r}}

<em>Tn = n-th term of the sequence</em>

<em>Sn = sum of the first n numbers of the sequence</em>

<em>a = the initial term of the sequence</em>

<em>r = common ratio between adjacent numbers</em>

Let us now tackle the problem!

<u>Given:</u>

a₁ = 8

a₂ = 4

a₃ = 2

a₄ = 1

<u>Solution:</u>

<em>Firstly , we find the ratio by following formula:</em>

r = a_2 \div a_1 = 4 \div 8 = 0.5

\texttt{ }

<em>The iterative rule for the sequence:</em>

a_n = a_1 \cdot~ r^{n-1}

a_n = 8 \cdot~ (0.5)^{n-1}

\texttt{ }

<h3>Learn more</h3>
  • Geometric Series : brainly.com/question/4520950
  • Arithmetic Progression : brainly.com/question/2966265
  • Geometric Sequence : brainly.com/question/2166405

<h3>Answer details</h3>

Grade: Middle School

Subject: Mathematics

Chapter: Arithmetic and Geometric Series

Keywords: Arithmetic , Geometric , Series , Sequence , Difference , Term

6 0
3 years ago
How to do this question
navik [9.2K]

Answer:

3

Step-by-step explanation:

by looking at the table, see when f(x)=0.

you can see that when f(x)=0 x=3

3 0
3 years ago
What is -6 divided by -7
Alexeev081 [22]

Answer:

0.85714285714

Step-by-step explanation:

Use a calculator in google.

7 0
3 years ago
Read 2 more answers
Determine if the sequence is geometric. If it is, find the common ratio, the 8th term, and the explicit formula. -2, 6, -18, 54,
aleksandrvk [35]

Answer:

Step-by-step explanation:

In a geometric sequence, the consecutive terms differ by a common ratio,r. Considering the given sequence,

r = 6/- 2 = - 18/6 = - 3

Therefore, the sequence is geometric.

The formula for determining the nth term of a geometric progression is expressed as

Tn = ar^(n - 1)

Where

a represents the first term of the sequence.

r represents the common ratio.

n represents the number of terms.

From the information given,

a = - 2

r = - 3

The explicit formula is

Tn = - 2 × (- 3)^(n - 1)

To find the 8th term, T8,

T8 = - 2 × (- 3)^(8 - 1)

T8 = - 2 × (- 3)^7

T8 = - 2 × - 2187

T8 = 4374

3 0
2 years ago
Helppppppppppppppppppppppppp
shusha [124]

Answer:

The answer is 100

Step-by-step explanation:

4 0
2 years ago
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