The data set shows the numbers of hours students study the week before a test. Find and interpret the mean absolute deviation of the data. Write your answer as a decimal. 1, 1, 1, 3, 4, 5, 6, 7, 8, 10 The data values differ from the mean by an average of hours.

Step-by-step explanation:

there is the graph

Answer:

2/3

Step-by-step explanation:

2nd term = 2/5

5th term = 16/135

Nth term for any series is given by [tex]a r^n-1[/tex]

where a is the forst term

r is the common ratio

for 2nd term

[tex]2nd \ term = ar^n-1 = 2/5\\2nd \ term = ar^2-1 = 2/5\\2nd \ term = ar= 2/5\\[/tex]

for 5th term

[tex]5th \ term = ar^5-1 = 16/135\\\\5th \ term = ar^4 = 16/135\\[/tex]

Since we have to eliminate a  and find r .

we can divide 5th term by second term

then we get the following equation

[tex]2nd term/ 5th \ term = ar/ar^4 = (2/5) / (16/135)\\=>1/r^3 = 2*135/5*16 \\=>1/r^3 = 27/8\\=>1/r = \sqrt[3]{27/8} \\=> 1/r = 3/2\\=> r = 2/3[/tex]

\

Thus, common ratio is 2/3.

Answer:

Light refracts whenever it travels at an angle into a substance with a different refractive index (optical density). This change of direction is caused by a change in speed. For example, when light travels from air into water, it slows down, causing it to continue to travel at a different angle or direction. Which would make him see the fish in a spot that its not at. So 2 is the correct answer.

Answer:

2 < x

Step-by-step explanation:

7-2(x+2)<-4-3(1 - x)

Distribute

7 - 2x-4 < -4 -3 +3x

Combine like terms

3 -2x < -7 +3x

Add 2x to each side

3-2x +2x< -7+3x+2x

3< -7+5x

Add 7 to each side

3+7 <-7+7+5x

10 <5x

Divide each side by 5

10/5 <5x/5

2 < x

Answer:

19.5

6.5% of 300

Answer:

105 degrees

Step-by-step explanation:

The sum of the angles on a triangle must always equal 180 degrees. We know that two angles are 28 and 47, so the third angle must be 105.

28 + 47 + x = 180

75 + x = 180

75 - 75 + x = 180 - 75

x = 105

Answer:

105 degrees

Step-by-step explanation:

28+47=75

180-75=105

Answer:

a = 4.50

b = 13.50

Step-by-step explanation:

i did the quiz

Answer:21 cents

Step-by-step explanation:5.25 divided by 25 is 21

Answer:

I would use box-and-whisker plots to compare the two sets of prices. The plots will show the ranges, which is the difference least and greatest data points. Also, the medians will divide each set of data into 4 equal groups. Comparing these middle values and range of prices in each group will show how similar the prices are.

Step-by-step explanation:

used this son my test and it was right.

Answer:

a = 9m

Step-by-step explanation:

You can take the volume of the water tank as the volume of a cube.

The volume of a cube with side a is given by:

V=a*a*a = a^3

To find the value of a you do a the subject of the formula:

a=(V)^{1/3}

You replace and obtain for a:

a = (729m^3)^{1/3} = 9m

hence, the rim a of the water tank is 9m

Answer: The side of the tank is 9 m.

Step-by-step explanation: A water tank is normally a cube, which means length, width and height has the same measure.

To calculate Volume of a cube:

V = length*width*height

Knowing that volume is 729 and assuming sides are x:

x*x*x = 729

x³ = 729

x = [tex]\sqrt[3]{729}[/tex]

x = 9

The volume is in cubic meters, so sides of the tank measures 9 m.

Answer:

depends on what car you are driving and its gas mileage

Answer: 3

Step-by-step explanation:

Answer:

3 and 3/1! Why both you ask? Because they mean the same thing.

Step-by-step explanation:

9 is your y-intercept, and 9/1 is totally off.

Answer:

writing. a good pen of the type and point size that's most comfortable for you. Generally I find that fine-point pens are the best for taking notes. You can write smaller and get more on a page. If your handwriting tends to be small, you'll probably prefer a fine point.

Answer:

[tex]\frac{64}{27} cm^3[/tex]

Step-by-step explanation:

V = L*W*H

V= (4/3)*(4/3)*(4/3)

Volume =  [tex]\frac{64}{27} cm^3[/tex]

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The area if base x height

8 x height = 96

Divide both sides by 8 to find the base size:

96 / 8 = base

base = 12

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Answer:

7.4%

Step-by-step explanation:

find percentage of the tax

(total cost=$388.80)

28.80 out of 388.80

=28.80*100/388.8= 7.4%

Answer: $22.12

Step-by-step explanation:

I just did the compound interest formula which is

starting amount * (1. interst rate) ^ number of years

example if you have 100$ and you want to know how much it is worth if it appretiates by 7% of a period of 20 years it would look something like this;

100 * (1.10) ^20 = 672.74$

but since you have to figure out what it was in 2008 which was exactly half way in the period you divide the exponent by half so your formula should be;

I know the answer is right because I asked my teacher and it's correct.

REAL EXAMPLE: 18 * (1.51) ^.5 = 22.12$

The amount should be $22.12.

[tex]= 18 \times (1.51) ^{.5}[/tex]

= $22.12

learn more about the percentage here: https://brainly.com/question/21678821

Answer:

strong

modern

weak

strong

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

[tex]log_{7}[/tex] 49 = x can be reformatted to [tex]7^{x}[/tex] = 49. Solve for that and x =2.

Answer:

78 apples for 12 pies

Step-by-step explanation:

we use 13 apples for 2 pies

she makes 12 pies

6x2 = 12 pies

so we do 13x6

13x6=78

78 apples for 12 pies :)

can i get brainliest

Answer:

13/2 = 6.5

12 x 6.5 = 78

? = 78

13/2 = 78/12

Step-by-step explanation:

13 apples ÷ 2 pies = 6.5 apples per pie

12 pies x 6.5 apples per pie = 78 apples for 12 pies

? = 78 apples for 12 pies

13/2 = 78/12

Answer:

Step-by-step explanation:

C

Answer:

235.2

Step-by-step explanation:

147 * 1.60 -> this way is an all in one calculation but to double check you can take 60% of 147 (147 * .60 = x ) and add that value to 147 so... 88.2+147=235.2

Answer:

88.2

Step-by-step explanation:

So all you have to do is this 147 * .60 = 88.2

Answer:

263

Step-by-step explanation:

Let the number = xyz

The 6 has a digit on its left and on its right. It must be the middle number.

y = 6, so the number is x6z.

The 2 is not the last digit. It must be the first digit.

x = 2, so the number is 26z.

The remaining digit — 3 — must be the last digit.

z = 3, and the number is 263.

The mystery number is 263.

A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Let the three digit number be xyz.

The digits are 3,6,2.

The mystery number can be found as

Hence we can conclude that the mystery number is 263.

Learn more about word problems here

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Answer:

-2x-44

Step-by-step explanation:

-6x-42=-4x-2

Answer:

one

Step-by-step explanation:

-6x -6×7 = -4x-2 :

-6x -42 = -4x -2 : (+4x)

-2x -42 = -2 : (+42)

-2x = 40 (/-2)

x = -20

Answer:

30

Step-by-step explanation:

divide 10.5by 35/100

Look at the attached picture

Hope it will help you....

-pragya~~

I don't know if this is going to be helpful but I think it is 94 ft squared

Answer:

independent is the time. time does change throughout the experiment.

Dependent is texting speed as it can vary.

hope this helps :)

Answer:

2x - 5

Step-by-step explanation:

2x^3 + 4x = 2x(x^2 + 2)

-5x^2 - 10  = -5(x^2 + 2)

so the factors are  (2x - 5)(x^2 + 2).