this is khan academy and i need it fast thx

Answer: I believe it is option C

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

\(2^{3} =8\) because 2*2*2=8

Answer: a=1/2bh+lw

Step-by-step explanation:

the 1/2bh works for a right-angled triangle but we have that and also part of a square or rectangle, so we added a little onto that area and boom a=1/2bh+lw is the answer.

Answer:

The first option, V ≈ 1607.7 in²

Step-by-step explanation:

Find the volume of the given cylinder.

\(\begin{center}\framebox{\parbox{4cm}{\textbf{Volume of a Cylinder:}\\[2ex]The volume of a cylinder with radius $r$ and height $h$ is given by the formula:\\[2ex]\center{$V = \pi r^2 h$} \\ \\}}\end{center}\)

Given:

r = 8 in

h = 8 in

π = 3.14

Find:

V = ?? in³

\(\hrulefill\)

Now solving,

Substitute the given values into the formula:

=> V = (3.14)(8)²(8)

Using a calculator to simplify:

=> V = 1607.68 in²

Rounded to the nearest tenth:

∴ V ≈ 1607.7 in²

Thus, the first option is correct.

Answer:

the answer is B (x and y have a weak, positive correlation)

Give the person above me brainlyest for helping!

Step-by-step explanation:

The coefficient of correlation for the given data of x and y is 0.78.

x and y have a strong, positive correlation

A correlation coefficient is a number between -1 and 1 that tells you the strength and direction of a relationship between variables. In other words, it reflects how similar the measurements of two or more variables are across a dataset.

Here, given values of x and y

x   1    2    3   4   5    6

y   3   4    9   7    2    18

xy  3   8   27  28 10  108

x²   1   4    9    16   25   36

y²   9  16  81  49  4  324

∑x = 21,  ∑y = 43,  ∑xy = 194, ∑x² = 91, ∑y² = 483, n = 6

Now, Correlation between x and y

r = (n∑xy - ∑x.∑y)/ √[{n∑x²- (∑x)²}{n∑y² - (∑y)²}]

r = ( 6 X 194 - 21 X 43 ) / √[ {6 X 91 - (21)²}{ 6 X 483 - (43)²}]

r = ( 1164 - 903) / √( 546 - 441)(2898 - 1849)

r = 261 / √ 105 X 1049

r = 261 / √110145

r = 261 / 331.88

r = 0.78

Thus, The coefficient of correlation for the given data of x and y is 0.78.

x and y have a strong, positive correlation

Learn more about coefficient of correlation from:

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Step-by-step explanation:

an = 3* (sqrt 2)^(n-1)   = 192    solve for n

           sqrt(2)^(n-1) = 64

                  n-1 =  log 64 / log (sqrt 2) = 12

                 n = 13  

Answer:

1. adjacent angles exist as pairs

2. they share a common vertex

3. they share a common side

Answer:

2 1/6

Step-by-step explanation:

12/ 6= 2+(1/ 6)=2 1/6

                1/6

Answer: 30

Step-by-step explanation:

Answer:

23421

Step-by-step explanation

x = 32094 divided by 74 = 12.0932 so 64068 - 12.0932 = 64055.9068

good luck

Answer:

Already have the answer, but its 23421.

Step-by-step explanation:

y=X equation is a direct variation function.

Answer:

D.) 37.65

Step-by-step explanation:

I know that 8 is an input based on this word problem. So, then I plug in the 8 for z and solve to find the expected height of the tree in 8 years.

y=4.3z+3.25

y=4.3(8)+3.25

y=34.4+3.25

y=37.65

In 8 years the expected height of the tree is 37.65

Answer:40 meals

Step-by-step explanation:

15/3=5 and 5x8=40

Answer:

Step-by-step explanation:

Answers:

- DH is correct because a line is connecting the two points D and H as shown in the image, forming a line segment.

- ED is correct because a line is connecting the two points D and E, forming another line segment, as shown in the drawing.

- EH is incorrect because in the drawing shown, there is no line connecting the two points E and H, so there would be no line segment formed between these two points.

- CD is correct because there is another line connecting the two points C and D, forming another line segment in the drawing.

Therefore, lines DH, ED, and CD are all line segments.

The rule for the relationship between the nonfiction and fiction books as an expression is n = 4f.

We have,

Let's write a rule for the relationship between the number of non-fiction books (n) and the number of fiction books (f) based on the given information.

We are told that the library loans 4 times as many non-fiction books as it does fiction books.

This means that the number of non-fiction books (n) is equal to 4 times the number of fiction books (f).

Mathematically, we can express this relationship as:

n = 4f

Where:

n = Number of non-fiction books

f = Number of fiction books

Thus,

The rule for the relationship between the nonfiction and fiction books as an expression is n = 4f.

Learn more about expressions here:

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Answer:

Solve for x: 22x + 54 = -20 + 60x

Solve for x: 8 + 9.8x + 9 = 3.8x - 16 + 3.8x

Solve for x: -2x - 10 = -14x - 7

Step-by-step explanation:

First step is to Combine the like terms, which means to subtract 60 from 22 which will equal -38x+ 54 = -20 + x

Next you will add 20 with 54 and -20 which will give you -38x+ 74 = x

Finally you have to find x so swap out -38x with x and solve 74 + x = -38 and that will be your answer. Please do the same for the next two problems and you will be good to go!

Glad to help!

(Please mark brainiest!)

Answer:

No, Mia is not correct, the answer is -2.

Step-by-step explanation:

First we are going to use the distributive Property.

Step 1: 2(0.75+0.4). multiply the 2 out. .75m x 2=1.5m and 2 x .4= .8.

We get 1.5m+.8, so 2(0.75+0.4)=1.5m+.8

Now we are going to distribute on the oher side. 4(.5m-.8)

4x .5m=2m and 4x.8=3.2. Keep the sign the same and we get 2m-3.2, so 4(.5m-.8)=2m-3.2

We put this into the new equation to get 1.5m+.8+7.8=-6.4m+2m-3.2

Step 2: combine like terms

.8+7.8= 8.6 and -6.4m +2m =-4.4m

Plug that into our equation and we get 1.5mn+8.6=-4.4m-3.2

Step 3: Switch the sides

Bring -4.4m to the other side to get 1.5m+4.4m=5.9m

One side is 5.9m

We bring 8.6 to the other side to get -8.6. now we do -3.2-8.6=-11.8.

Our new equation is 5.9m=-11.8

divide by 5.9 on both sides to get our answer of

m=-2

Answer:

5x = 50

Step-by-step explanation:

4x - 2 = 38

solved - x=10

5x = -50

solved - x=-10

x - 20 = 30

solved - x=50

5x = 50

solved - x=10

2x = 10

solved - x=5

Answer:

5x = 50

Hope this helps!!

Step-by-step explanation:

Answer:

Slope = 0

Step-by-step explanation:

Since they both have the same y, there isnt really a slope, its just a horitonzal line. I suggest using Desmos graphing calculator on your computer to see the slopes

I hope it helps......:))

Answer:

x+y-x+y-y= y

2(3x-y)= 6x-2y

2(x+2y)-3y= 2x+y

Answer:

y=1/4x-6 i think

Step-by-step explanation:

I tried and i really hope this helped you im not really an expert

Answer:

\(p(0) + p(1) = 2\)

Step-by-step explanation:

=> \(p(x) = x^3-x^2+1\)

Putting x = 0 in p(x)

=> \(p(0) = (0)^3-(0)^2+1\)

=> \(p(0) = 0-0+1\)

=> \(p(0) = 1\)

Putting x = 1 in p(x)

=> \(p(1) = (1)^3-(1)^2+1\)

=> \(p(1) = 1-1+1\)

=> \(p(1) = 1\)

So,

=> \(p(0)+p(1) = 1+ 1\)

=> \(p(0) + p(1) = 2\)

Answer:

35.41 kph

Step-by-step explanation:

Use a conversion factor of 1 mph = 1.609 kph to solve the problem.

Answer:

35.40

Step-by-step explanation: Therefor 35:40 is the answer!

(1 mile per hour = 1.609 kilometer per hour)

22*1.609=

39.398

39.398 - 39.40 (PLS MARK BRAINLIEST!!)

Therefore 35.40 is the answer!

(PLS MARK BRAINLIEST!!)

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