please help me please

The formula Sabine should use for calculating the variance and standard deviation for the random sample of bamboo stalks are,

[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]

[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]

The variance of the data is the measure of average level by which every point is differed from the mean.

It can be calculated as,

[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]

The standard deviation of the data is the half of the difference of the highest value and mean of the data set.

It can be calculated as,

[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]

Sabine records the daily heights of a random sample of bamboo stalks, in inches.

They are: 20, 19, 17, 16, 18, 15, 20, 21

For this data Sabine wants to calculate the variance and standard deviation, which can be done using the above formula.

Hence, the formula Sabine should use for variance is,

[tex]s^2=\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}[/tex]

The formula should Sabine use for standard deviation,

[tex]s=\sqrt{\dfrac{(x_1-\overline x)^2(x_2-\overline x)^2...(x_n-\overline x)^2}{n-1}}[/tex]

Learn more about the variance and standard deviation here;

https://brainly.com/question/15858152

Answer:

First Part: A and B

Second Part: 4.5 and 2.12

Step-by-step explanation:

edge 2022

3 + 7x - (2 + 9x )

3 + 7x - 2 -9x

1-2x

Answer:

1-2x

Step-by-step explanation:

3+7x-(2-9x)

(if there's a minus in front of parenthesis then you have to change the sign in the parenthesis)

3+7x-2-9x(take out from parenthesis)

1-2x(combine/simplify like terms)

Answer:

4.  x=3

5. 27

Step-by-step explanation:

4.  6(x+1) = 24,  because you work the equation backwards and the opposite way,  24/6 then - 1

5. put the numbers from lowest to highest temperature

9'c,  -3'c,  22'c,  -5'c,  11'c,  15'c

-5'c,  -3'c,  9'c,  11'c, 15'c,  22'c

range - is the highest number - lowest

22--5 =22+5 , therefore range is 27

Answer:

13

Step-by-step explanation:

AB = 5

AC = 10

BC = ~11

P = 11 + 10 + 5 = 26

26 / 2 = 13

Step-by-step explanation:

£22.25 pls mark brainliest thanks

Answer:

82.82in^2

Step-by-step explanation:

Check the picture below.

The value of variables x and y are,

x = 1 and y = 188

An angle is a combination of two rays (half-lines) with a common endpoint. The latter is known as the vertex of the angle and the rays as the sides, sometimes as the legs and sometimes the arms of the angle.

Given that;

In the diagram, quadrilateral HIJK is inscribed in circle L.

Now, We know that;

sum of opposite angle are 180 degree.

Hence, We get;

∠H + ∠J = 180

67 + (y - 75) = 180

y - 8 = 180

y = 180 + 8

y = 188

And, We get;

∠I + ∠K = 180°

96 + (x + 83) = 180

x + 179 = 180

x = 180 - 179

x = 1

Thus, The value of variables x and y are,

x = 1 and y = 188

Learn more about the angle visit:;

https://brainly.com/question/25716982

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Answer:

25%

Step-by-step explanation:When you divide 7 and 28 you get 0.25 which makes 25%

Answer:

9

Step-by-step explanation:

You substitute 9 for x and 9 - 3 = 6

I hope it helps! Have a great day!
Muffin ^^

Answer:

9

Step-by-step explanation:

Add 3 to the 6 and that will get rid of the 3. You will get 9.

x - 3 = 6

x -3 + 3 = 6 + 3

x = 9

Have an amazing day!

PLEASE RATE!

Answer:

Step-by-step explanation:

Answer:

(0, -3)

explanation:

If reflected over y axis, there will be additive inverse in x unit

use the formula:  (x,y) → (−x, y)

Then if translated vertically, there will be change in y axis:

(0, -7+4) → (0, -3)

Answer:

15% simple interest

Step-by-step explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!

Answer:

Yes, Wendy's conclusion is valid.

Step-by-step explanation:

40 divided by 15= 2.666666666666667

Therefore, 1000 divided by 2.666666666666667= 374.999999999999953 which can be rounded to 375

Answer:

Your answer is: y = 5/8x -1/8

Step-by-step explanation:

Hope this helped : )

Answer:

27 over 4

Step-by-step explanation:

To solve this, work on each side, one at a time.

Since there are variables, replace them with the numbers provided.

7x - 3y

over

2x + y

Can be translated to...

7 * 3 - 3 * -2

over

2 * 3 + -2

Let's work with the top side first.

7 * 3 - 3 * -2

Remember the order of operations (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction)

Keep in mind that Multiplication and Division as well as Addition and Subtraction are done in the order shown in the problem.

Let's start by doing the multiplication...

21 - (-6)

Then the subtraction!

27!

Now for the bottom side...

2 * 3 + -2

Multiply first.

6 + -2

Then add!

4!

This leaves the answer as...

27 over 4!

First, find the area of the table...

d = 4 ft  ---> r = 2 ft

Area = 3.14 * (2 ft)² = 12.56 ft²

Find how many pads will cover the entire table. Since each pad is 1 ft²...

# of pads = 12.56 ft² / 1 ft² = 12.56

Find the total cost for all pads...

Total cost = 12.56 * $0.75 = $9.42

Answer:

41%

Step-by-step explanation:

Answer:

bearing of B from A is 245°

Step-by-step explanation:

the bearing of B from A is the measure of the clockwise angle from the northline N to B , that is

360° - 115° = 245°

Answer:

8 miles.

Step-by-step explanation:

Travelling down Alley street is 20 miles

Travelling along Polk and Fernwood = 12 + 16 = 28 miles.

The student should compute 6*180 = 1080 because of the formula

S = 180(n-2)

We have n = 8 sides which leads the n-2 part to become n-2 = 8-2 = 6

Answer:

6

Step-by-step explanation:

[tex] \hookrightarrow \: number(n) = 8 \\ \hookrightarrow \: sum( \sum \: x) = 2 + 5 + 7 + 3 + 8 + 9 + 10 + 4 = 48 \\\hookrightarrow \: mean = \frac{ \sum \: x}{n} \\ \\\hookrightarrow \: mean = \frac{48}{8} = 6[/tex]

Answer:

= -8p+46

Step-by-step explanation:

Let's simplify step-by-step.

−2p−6(p−4)+22

Distribute:

=−2p+(−6)(p)+(−6)(−4)+22

=−2p+−6p+24+22

Combine Like Terms:

=−2p+−6p+24+22

=(−2p+−6p)+(24+22)

=−8p+46

(There u go ;)

Answer:

Here

Step-by-step explanation:

Ricardo's recipe for 4 loaves of bread requires 2/3 cup of olive oil.Now we are given that he wants to make 1 loaf. So, 4 loaves requires cup of oil So, 1 loaf requires cup of oil.
Ricardo is wrong.

he requires 1/6 cup of oil to make 1 loaf .While he decided he needs 1/4 cups

Using the slope concept, it is found that the ship is sunken at a depth of 357 meters.

The slope is given by the vertical change divided by the horizontal change, and it's also the tangent of the angle of depression.

In this problem:

Hence, applying the slope:

[tex]\tan{55^\circ} = \frac{d}{250}[/tex]

[tex]d = 250\tan{55^\circ}[/tex]

[tex]d = 357[/tex]

The ship is sunken at a depth of 357 meters.

More can be learned about the slope concept at https://brainly.com/question/18090623

Answer:

I believe it is 0.53 kilograms

Step-by-step explanation:

530,000 milligrams = 530 grams which is 0.53 of a kilogram. Hope this helps :)

Answer:

I think your answer is c x=-2

Step-by-step explanation:

:)

Answer:

4+2+1=7 Make me brainlist please

Answer:

c

Step-by-step explanation:

c because

if you use a number such as -4 for x, you do

-3/2*-4 is 12/2 which is 6

6-2 is 4

the coordinate would be (-4,4)

it fits graph c