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Lady bird [3.3K]
2 years ago
10

Find the area of the regular pentagon

Mathematics
1 answer:
elena-14-01-66 [18.8K]2 years ago
7 0

Answer: 3100

Step-by-step explanation:

to find the area of something u must multiply both sides

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A curious patterns occurs in a group of people who all shake hands with one another. It turns out that you can predict the numbe
ycow [4]

Missing part of the question

Determine the number of handshakes, i, that will occur for each number of people, n, in a particular room. (people)

Answer:

S_n = \frac{n}{2}(n - 1)

Step-by-step explanation:

Given

For 5 people

\begin{array}{cc}{People} & {Handshakes} & {5} & {4} & {4} & {3} & {3} & {2} & {2} & {1} & {1} & {0} &{Total} & {10} \ \end{array}

Using the given instance of 5 people, the number of handshakes can be represented as:

(n - 1) + (n - 2) + (n - 3) + ........ + 3 + 2 + 1 + 0

The above sequence is an arithmetic sequence and the total number of handshakes is the sum of n terms of the sequence.

S_n = \frac{n}{2}{(T_1 + T_n})

Where

T_1 = n - 1 --- The first term

T_n = 0 --- The last term

So:

S_n = \frac{n}{2}(n - 1 + 0)

S_n = \frac{n}{2}(n - 1)

7 0
2 years ago
Help please!! I’m confused on this question. Thank you!!!
myrzilka [38]

Answer:

Im pretty sure that is an obtuse angle

Step-by-step explanation:

Hope that helps

6 0
3 years ago
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A factory-made 100,000 jars of peanut butter. 50,000 of the jars contained creamy peanut butter. What percentage of the jars of
snow_tiger [21]

Answer:

50%

hope this answer helps you!

3 0
3 years ago
Please help me! Don't understand.
FromTheMoon [43]
The new area would be 270
7 0
2 years ago
Why is 3/12 a rational number
iVinArrow [24]
3/12 is a rational number because rational numbers can be written in the form of a/b

When you simplify 3/12, you get 1/4, which is a fraction
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3 years ago
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