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boyakko [2]
2 years ago
5

What is the summation notation for the geometric series 1/2+2+8+32+128?

Mathematics
1 answer:
Karolina [17]2 years ago
5 0

The summation notation is ∑ (4^{n} -1)\\/2.

<h3>What is geometric progression?</h3>

The common ratio multiplied here to each term to get the next term is a non-zero number.

Given:  1/2+2+8+32+128

Using,

a_n= a_1r^{n-1}

We have,

a1 =1/2 and r= 4

notation is : An= ∑ (4^{n} -1)\\/2

Hence, the notation is  An= ∑ (4^{n} -1)\\/2.

Learn more about Geometric series here:

brainly.com/question/23304333

#SPJ1

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Answer:

Your teacher is correct.

Step-by-step explanation:

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The first number in a coordinate is the "x coordinate".

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The X axis is the horizontal line.

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The origin is the middle of the two axis's.

For A, the x coordinate is -4. You go right on the horizontal line because it is a negative number. The y coordinate is 4, so you go up from -4 to 4 because it is a positive number. there, you'll get your coordinate (-4 , 4).

For B, because the x coordinate is 0, you don't move at all, and you stay on the x origin. The y coordinate is 6, so you go up from the origin to 6. There, you'll have (0, 6).

C is pretty self explanatory if you understand the concept.

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3 years ago
Carla and rob left a 20% tip after having lunch at a restaurant the amount of the tip was $6 Carla's lunch cost $15 which equati
siniylev [52]
This question is a little tricky.  Carla had a bill of $15, which we will add to the cost of Rob's lunch.  They left a 20% tip on the TOTAL cost of both their lunches, which should equal $6.  20% is equivalent to 0.2.  So, the equation is 6=0.2(x+15).  In other words, 20% of the sum of Carla and Rob's lunches is 6 dollars.

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6 0
4 years ago
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jek_recluse [69]
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3 years ago
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Step-by-step explanation:

4 0
3 years ago
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For this case, the first thing you should do is pass the number given to percentage.
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3 0
3 years ago
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