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neonofarm [45]
3 years ago
5

-25-6= -25 + -6 = -31

Mathematics
1 answer:
VashaNatasha [74]3 years ago
4 0

30 + 40 1- 40 = 69

Step-by-step explanation:

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What are the values of a 1 and r of the geometric series? 1 3 9 27 81.
sp2606 [1]

For the given geometric series the value of the common ratio(r) is 3, while the value of a₁  is 1.

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

A series of numbers whose any two consecutive numbers are always in a common ratio of that series.

Given to us

Series,  1 3 9 27 81

To find the value of the common ratio(r), we will simply find the ratio of any two consecutive numbers, therefore,

r = ratio = \dfrac{3}{1} = 3

As we can see the common ratio of the given series is 3, therefore, every next number will be thrice the number before.

We need to find the value of a₁ for the given  series, and as we know that a₁ is the first number of the series with which the series is starting, therefore,

a₁  = 1

Hence, for the given geometric series the value of the common ratio(r) is 3, while the value of a₁  is 1.

Learn More about Geometric Series:

brainly.com/question/14320920

3 0
2 years ago
A card is randomly selected from a standard
Anni [7]

Answer:

5.8% or 6%

Step-by-step explanation:

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52 cards are in a deck and you have 3 black face card so it would be [3/52=0.0576]

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5.76 rounded up is 6%

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