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hodyreva [135]
3 years ago
7

Determine the standard deviation of the data below. (1, 2, 3, 4, 5)

Mathematics
1 answer:
Burka [1]3 years ago
4 0

Answer:

\sqrt{2} or 1.414

Step-by-step explanation:

1) Find the mean. 1+2+3+4+5 = 15. 15/5= 3

2) For each data point, find the square of its distance to the mean. (4, 1, 0, 1, 4)

3) Sum the values from Step 2. 10

4) Divide by the number of data points. 10/5= 2

5) Take the square root. \sqrt{2}

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What is the gcf for 60,45​
saveliy_v [14]

Answer:

The greatest common factor of 60 and 45 is <em>15</em>

<em>PLEASE</em><em> </em><em>DO MARK</em><em> </em><em>ME AS</em><em> </em><em>BRAINLIEST UWU</em><em> </em>

7 0
3 years ago
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Graph the following equation: y = -4x + 2​
padilas [110]

To find graph this, you need to understand the equation.

The formula is y=mx+b, m being slope and b being y-intercept.

We start out graphing by finding where the y-intercept is--and we see that our intercept is 2. Place a point on (0, 2).

Now, we need to add our slope. Start at (0, 2) and go up 4 units. Next go to the LEFT (we have a negative slope, remember?). Continue this pattern.

It should look like this once it's done:

6 0
3 years ago
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What is the simplified form of the following expression?
geniusboy [140]

Answer:

242

Step-by-step explanation:

Simplify the following:

11 ((9^2 - 5^2)/2^2 + 8)

Hint: | Evaluate 2^2.

2^2 = 4:

11 ((9^2 - 5^2)/4 + 8)

Hint: | Evaluate 5^2.

5^2 = 25:

11 ((9^2 - 25)/4 + 8)

Hint: | Evaluate 9^2.

9^2 = 81:

11 ((81 - 25)/4 + 8)

Hint: | Subtract 25 from 81.

| 7 | 11

| 8 | 1

- | 2 | 5

| 5 | 6:

11 (56/4 + 8)

Hint: | Reduce 56/4 to lowest terms. Start by finding the GCD of 56 and 4.

The gcd of 56 and 4 is 4, so 56/4 = (4×14)/(4×1) = 4/4×14 = 14:

11 (14 + 8)

Hint: | Evaluate 14 + 8 using long addition.

| 1 |  

| 1 | 4

+ | | 8

| 2 | 2:

11×22

Hint: | Multiply 11 and 22 together.

| 2 | 2

× | 1 | 1

| 2 | 2

2 | 2 | 0

2 | 4 | 2:

Answer: 242

3 0
3 years ago
13. Connie wants to paint one wall in her living room. Along the wall, she
erica [24]

Answer:  Approximately 96 square feet

======================================================

Work Shown:

1 ft = 30 cm

1 ft = (5*6) cm

1 ft = 5*(6 cm)

1 ft = 5*(1 board width)

1 ft = 5 board widths

12*(1 ft) = 12*(5 board widths)

12 ft = 60 board widths

12 ft = 1 full wall length

The wall is 12 feet horizontally across and 8 feet tall, so its estimated area is 12*8 = 96 square feet approximately. This is approximate because of the fact we used the approximation of 1 ft = 30 cm.

7 0
3 years ago
On the provided graph, select the locations of the x-intercepts of the following polynomial function. x^3-7x^2-26x+72
matrenka [14]

Answer:

The x-intercepts are the points (-4,0). (2,0) and (9,0)

The location of the x-intercepts in the attached figure

Step-by-step explanation:

we know that

The x-intercepts of a function are the values of x when the value of the function is equal to zero

we have

f(x)=x^{3}-7x^{2}-26x+72

using a graphing tool

The x-intercepts are the points (-4,0). (2,0) and (9,0)

see the attached figure

5 0
3 years ago
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