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2 years ago

Which polygon is a pentagon

1 answer:

5 0

Answer: In geometry, a pentagon is a five-sided polygon with five straight sides and five interior angles that sum up to

540

. A pentagon shape is a plane figure, or flat (two-dimensional) 5-sided geometric shape.

Properties of a Pentagon

1. Pentagons have five straight sides

2. Pentagons have five interior angles, which sum to

540

3. The five sides do not intersect

Step-by-step explanation: Hello, I have only told you the properties on how to tell if it's a pentagon, please explain or show some type of image if you still need help!

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The larger of two number is 12 more than the smaller number.if the sum of the two numbers is 74, find the two numbers

Mars2501 [29]

<h3><u>The value of the smaller number is 31.</u></h3><h3><u>The value of the larger number is 43.</u></h3>

y = 12 + x

y + x = 74

Since we have a value for y, we can plug it into the second equation

12 + x + x = 74

Subtract 12 from both sides.

x + x = 62

Combine like terms.

2x = 62

Divide both sides by 2.

x = 31

Now that we have a value of x, we can plug it into the original equation to get a value for y.

y = 12 + 31

y = 43

3 0

3 years ago

A sample with a mean of m = 40 and a variance of s2 = 20 has an estimated standard error of 1 point. how many scores are in the

tamaranim1 [39]

The correct option is 20.

The score found for the sample is 20.

<h3>What is Standard error?</h3>

A standard error is a statistic that is applied to test the distribution of data. This metric is comparable to standard deviation. We can calculate the standard error if we know the sample size & standard deviation. It assesses the mean's precision.

Now, according to the question;

Sample mean; $\bar{x}=40$

Sample variance; $s^{2}=20$

Thus, $s=\sqrt{20}=4.47$

Standard error SE = 1

The amount of scores with in sample must be determined here.

The standard error formula is as follows:

$S E=\frac{s}{\sqrt{n}}$

We might rearrange the formula as follows:

$\begin{aligned}\sqrt{n} &=\frac{s}{S E} \\n &=\left(\frac{s}{S E}\right)^{2}\end{aligned}$

Substituting the values;

$\begin{aligned}&n=\left(\frac{4.47}{1}\right)^{2} \\&n=19.98\end{aligned}$

The sample's number of scores n = 19.98 = 20 (round up)

Therefore, the scores are in the sample is 20.

To know more about the Standard error, here

brainly.com/question/14467769

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3 0

1 year ago

What is the answer to 18 divided by parentheses 5-2 parentheses

deff fn [24]

18÷(5-2)

18÷3

6 is the answer

6 0

3 years ago

How do you write 3,500 in scientific notation

kolbaska11 [484]

To write a number in scientific notation put the decimal after the first digit and drop the zeros and to find the exponent count the number of places from the decimal to the end of the number to express 3,500 use 3.5 x 10 ^ 3 or 3.5E03

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3 years ago

A shipping tube is shaped like a triangular prism. The bases are equilateral triangles with edges of 5 inches and a height of 4.

zimovet [89]

Answer:

there is the thing you need to answer the question right

Step-by-step explanation:

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3 years ago