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Alecsey [184]
3 years ago
5

After plotting the data where x represents the length of the side of a polygon, and f(x) represents the area of the polygon, Jac

k used technology and determined the appropriate model to approximate the area of the polygon, f(x) = x2 + 2x + 5. Use the model Jack created to predict the area of a polygon that has a side length of 3. 10 18 19 20

Mathematics
2 answers:
konstantin123 [22]3 years ago
7 0

Answer:

Option d. 20 unit^{2}

Step-by-step explanation:

After plotting data determined the appropriate model to approximate the area of polygon is

f(x)=x^{2}+2x+5, here x = length of the side of a polygon

We have to find the area of a polygon that has a side length = 3

f(3)=3^{2}+2*3+5

= 9 + 6 + 5

= 15 + 5 = 20

Option d. 20 unit^{2} is the answer.

Zigmanuir [339]3 years ago
3 0

Answer:

See the attachment

Step-by-step explanation:

It is convenient to use a spreadsheet or graphing calculator for this.

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A report includes a statement that the​ "average" test score of applicants to medical schools is 28.4. What is the role of the t
qaws [65]

Answer:

See explanation below.

Step-by-step explanation:

The average is measure of central tendency that is also called sample mean and is calculated from the following formula:

\bar X = \frac{\sum_{i=1}^n X_i}{n}

This is an estimator of the population mean and is unbiased since the expected value for the estimator is the same parameter as we can see here:

E(\bar X)=\frac{\sum_{i=1}^n E(X_i)}{n} =\frac{n\mu}{n}=\mu

And is important because is the most common measure of central tendency reported on any study.

Is important to remember that this measure can be affected by outliers , for this case when we have outliers is better use the median as a measure of central tendency

7 0
3 years ago
Six times a number, increased by 3 is is 27. find the number
Mekhanik [1.2K]

Answer : The number is 4.

Step-by-step explanation:

<u>Given : </u>

six times a number, increased by 3 is is 27.

<u>To Find: </u>

The number.

<u>Solution : </u>

Let the number is x

six times a number is 6x

Increased by 3 = 6x+3

According to the given question :

<u>Solving the value x : </u>

6x+3 =27

6x = 27-3

6x = 24

x = 24/6

x = 4

Hence, the number is 4.

6 0
3 years ago
What is the length of bd
NikAS [45]

Answer:

B

Step-by-step explanation:

I would use the Pythagorean theorem to solve distances between 2 points, and this case is no exception.

We need to find the positive difference in their x coordinates and y coordinates.

The difference in x coordinates: 7

The difference in y coordinates: 8

Now we can use the Pythagorean theorem:

7^2+8^2 = x^2

49+64 = x^2

113 = x^2

x = sqrt(113)

Therefore, the answer is B.

3 0
3 years ago
Division or is it multiply
MArishka [77]

So 5,10,15,20,25,30,35,40,45 so Aylson needs 1 more bead. Because 45 beads are already used!

4 0
2 years ago
Read 2 more answers
Y=-x-4
aliina [53]

Answer:

(-4 , 0)

Step-by-step explanation:

Graph attached

5 0
3 years ago
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