this is khan academy and i need it fast thx

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.

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.

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Answer: I believe it is option C

Step-by-step explanation:

Answer:

x+y-x+y-y= y

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

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

Answer:40 meals

Step-by-step explanation:

15/3=5 and 5x8=40

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

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:

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

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:

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:

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:

y=X equation is a direct variation function.

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

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:

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:

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

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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!!)

(I WOULD REALLY APPRICIATE IT!!)____

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.

Answer:

2

Step-by-step explanation:

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

Answer:

Step-by-step explanation:

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:

2 1/6

Step-by-step explanation:

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

                1/6

Answer: 30

Step-by-step explanation:

Answer:

1. adjacent angles exist as pairs

2. they share a common vertex

3. they share a common side

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:

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: