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eimsori [14]
2 years ago
9

Question: what is the minimum number of colors required to color the map if no two adjacent regions can have the same color?

Mathematics
2 answers:
iragen [17]2 years ago
8 0
B. would be your answer for this question.

Elenna [48]2 years ago
5 0
4 colors are required to color the map.
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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15. N an 1 4 2 −12 3 36 t
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By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

<h3>What is sequence ?</h3>

Sequence is collection of  numbers with some pattern .

Given sequence

a_{1}=5\\\\a_{2}=-10\\\\\\a_{3}=20

We can see that

\frac{a_1}{a_2}=\frac{-10}{5}=-2\\

and

\frac{a_2}{a_3}=\frac{20}{-10}=-2\\

Hence we can say that given sequence is Geometric progression whose first term is 5 and common ratio is -2

Now n^{th}  term of this Geometric progression can be written as

T_{n}= 5\times(-2)^{n-1}

So summation of 15 terms can be written as

\sum_{n=4}^{15} T_{n}\\\\$\\$\sum_{n=4}^{15} 5(-2)^{n-1}$$

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

To learn more about Geometric progression visit : brainly.com/question/14320920

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2 years ago
How many minutes are in nine and one fourth hours?
saveliy_v [14]

Answer:

555 minutes

Hope this helps!

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A. Annual Savings = $60 * 12 = $720

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Gọi S là tập các giá trị nguyên của tham số m trong khoảng (–20;20) để bất phương
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Answer:

i cannot understand

Step-by-step explanation:

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