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lapo4ka [179]
3 years ago
6

What is the recursive rule for this geometric sequence? 3, 3/2, 3/4, 3/8

Mathematics
2 answers:
liubo4ka [24]3 years ago
8 0
I think that would be  an  = an-1 *  1/2    where an = nth term, and an-1 = previous term. 
hammer [34]3 years ago
8 0

Answer:

a_{n}=\frac{a_{n-1}}{2}

Step-by-step explanation:

Let's look a the sequence:

3, \frac{3}{2} ,\frac{3}{4} ,\frac{3}{8}

we can see that

\frac{3}{2}=3*\frac{1}{2}

and

\frac{3}{4} =\frac{3}{2}*\frac{1}{2}

and

\frac{3}{8}=\frac{3}{4}  *\frac{1}{2}

so each next number is equal to the previous number multiplied by \frac{1}{2} or, in other other words, is the previous number divided by 2.

So the recursive formula must be:

a_{n}=\frac{a_{n-1}}{2}

where a_{n} is a number in the sequence, and a_{n-1} is the immediate previous number.

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3 years ago
Read 2 more answers
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Leni [432]
Who eats onion pizza?

anyway, make bases same

1/4 times 5/5=5/20
2/5 times 4/4=8/20
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2/5 is bigger

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3 years ago
Determine the answer to 3 + (-5) and explain the steps using a number line
Andreas93 [3]

Answer:

-2

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3 - 5 = -2

Place the dot on -2 on the number line that is on your problem as the answer. To show the steps on the number line, use your jumps to go back. For example, your starting point will be on 3, and then use your jumps to go back by 5; that means you go into the negatives. For this case, it is -2.

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3 years ago
The following sequence of operations is done on a number. Multiply by 5, add 2, subtract 10, multiply by 2. The final result is
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answer the original number is 6

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x=6

4 0
3 years ago
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