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Norma-Jean [14]
3 years ago
13

What is the fourth term of the sequence a1=m an= 2an-1

Mathematics
1 answer:
kompoz [17]3 years ago
6 0

Answer:

  8m

Step-by-step explanation:

We assume you're describing a geometric sequence with first term m and common ratio 2. Then the n-th term is ...

  a[n] = m·2^(n-1)

and the fourth term is

  a[4] = m·2^(4-1) = 8m

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Total of scale usage is 2

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Step 3: you narrow down to group of \frac{3^{n-2}}{3} = 3^{n-3} coins

...

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Mikayla-132\\\\Zack:\\one\ fourth\ as\ much\ candy\ as\ Mikayla\\\\\dfrac{1}{4}\cdot132=\dfrac{132}{4}=33\\\\Kim:\\three\ times\ as\ much\ candy\ as\ Zack\\\\3\cdot33=99\\\\Answer:\ 132+33+99=264\ pieces

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Explanation

3.7


=

3.0

+

0.7


=

30

10

+

7

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=

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10


This is because...


3

=

3

⋅

1

=

3

⋅

10

10

=

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And also because...


0.7

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1

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