Which expression can be used to show a set of twenty books divided into four groups?

Answers

Answer 1

The expression that can be used to show a set of twenty book divided into 4 groups [tex]\frac{20}{5}[/tex]

Given,

The total number of books= 20

Number of books in each group= 4

We have to use division

Then, the expression used to represent a set of 20 books divided into four group =[tex]\frac{20}{5}[/tex]

So the result will be 4

Hence, the expression that can be used to show a set of twenty book divided into 4 groups is [tex]\frac{20}{5}[/tex]

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Related Questions


Solve inequality.
-2 w<24

Answers

From the inequality given by -2w < 24, w is greater than -12.

Inequality refers to the relationship between two non-equal expressions. It can be denoted by > for greater than, < for less than, >/= for greater than and equal to, and </= for less than and equal to.

Solving the inequality,

-2w < 24

Making sure the unknown variable is in one side and the constants in the other side.

-2w < 24

Divide both sides by -2, the coefficient beside the unknown variable,

(-2/-2)w < 24/-2

w < -12

Note that when we multiply or divide by a negative number

we must reverse the inequality.

w < -12 ⇒ w > -12

Therefore, w is greater than -12.

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Find the area of the rhombus
9 in
12 in
A = [?] in?

Answers

i could be wrong but i’m pretty sure it’s 54

Answer:

A=54in squared.

Step-by-step explanation:

To answer this you need to know two numbers which in this case is 9 and 12. 12 will be called the Base for now and 9 the height. and they you multiply them together to get 108 but it is like a triangle next you need to half the number so half of 108 is 54.

there are also many different calculators that all you need to do is input the numbers and it will tell you I hope this is helpful to you and that you will get the right answer.

Kathy has to write a 40 page report for her research class. She plans to write 8 pages in 4/7 week. She has 3 weeks to finish her report. Will she finish her report on time?

Answers

Answer:

Yes

Step-by-step explanation:

If she writes 8 pages a day for 4 days a week, in the first week, she will have already written 32 pages which she would only need one more day.

4 x 8 = 32

32 + 8 = 40

That gives her time to edit and revise :)

Hope this makes sense

Determine whether the data show a linear relationship. If so, write an equation of a line of fit.




The data do not show a linear relationship.
The data do not show a linear relationship.

The data show a linear relationship; The equation is y=4.25x+1.75.
The data show a linear relationship; The equation is y is equal to 4 point 2 5 x plus 1 point 7 5.

The data show a linear relationship; The equation is y=1.75x+4.25.
The data show a linear relationship; The equation is y is equal to 1 point 7 5 x plus 4 point 2 5.

The data show a linear relationship; The equation is y=6x.
The data show a linear relationship; The equation is y is equal to 6 x.

Question 2
If there is a linear relationship, use the selected equation to estimate y when x=15 and interpret its meaning in the context of the situation.

y=
, which means that after
minutes, you have burned
calories.

Answers

The slope of the given function is not constant therefore it will not be a linear function so option (A) will be correct.

What is a linear function?

A straight line on the coordinate plane is represented by a linear function.

The formula for a linear function is f(x) = ax + b, where a and b are real values.

Given the data table,

If we take its point as coordinate then (1,6),(6,27),(11,50)(13,56) and (16,70).

Slope associated with two points (1,6), (6,27)

(27 - 6)/(6 - 1) = 4.2

Now Slope is associated with two points(6,27),(11,50)

(50 - 27)/(11 - 6) = 4.6

Since the slope is not the same therefore given function is not the linear function because the linear function has a constant slope.

Hence "The slope of the given function is not constant therefore it will not be a linear function".

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Scores of healthy adults on a neurological test form a normal distribution with mean = 100 and sd = 15. what conclusion can be inferred about an individual score that corresponds to a z value of 1.0?

Answers

A conclusion which can be inferred about an individual score that corresponds to a z-value of 1.0 is that: c.) it is likely to come from the healthy distribution.

What is a z-value?

A z-value is also referred to as a z-score or standard score and it can be defined as a measure of the distance between a raw score and the mean, when standard deviation units are used.

In Statistics, z-values can either be positive or negative and it can be calculated by using this formula:

[tex]Z=\frac{x\;-\;u}{\delta}[/tex]

Where:

x is the sample mean or observed data.u is the mean.δ is the standard deviation.

Since the individual score that corresponds to a z-value of 1.0, we can reasonably infer and logically conclude that an individual score is likely to come from the healthy distribution.

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Complete Question:

Scores of healthy adults on a neurological test form a normal distribution with mean = 100 and SD = 15. What conclusion can be inferred about an individual score that corresponds to a z value of 1.0?

a.) it falls in the general region of the population

distribution

b.) it falls in the common region of the distribution

c.) it is likely to come from the healthy distribution

d.) it is unlikely to come from the healthy distribution

Tom does not really want to give away blue marbles and would like to change the probability that he chooses a blue marble to 1/10. How many marbles that are not blue could he add to the bag so that the probability of choosing a blue marble becomes 1/10?

Answers

Answer:

9

Step-by-step explanation:

if one marble is blue and 9 are other colors than its a 1/10 chance of getting a blue marble

I need mathematical help asap
X-2x+3=3-x

Answers

Answer:

0 = 0

Step-by-step explanation:

Combine like terms: combine x and -2.

rearrange the terms on left side.

subtract 3 from both sides.

simplify (subtract -x and x)

0=0

Find the x-intercept of the graph of y = x -2.
x-intercept:(,0)

Answers

It’s a because if 10 c 5 x = 70 more days ago today and I did not have a problem.

Maria paid $240 for a table set after a discount of 40% . What was the original price? Use Scratchpad to show at least one model to solve the problem (e.g., tape diagram, table, double number line diagram, 10×10 grid).

Answers

The original price of the table set was $400.

What exactly is a discount?

Customers are given discounts by shop owners in order to increase sales. A discount is a rebate or offer created to consumers on the listed price of goods.

A product's list price or marked price is the price proclaimed by the supplier or manufacturer, excluding any price reductions.The selling cost is the real price at which an article is sold after any reductions and discounts in the list price.Discounts are frequently described using words like "off" and "reduction."

Now, as per the given question;

The paid price by Maria is $240 called selling price.

The total discount on the table set was 40%.

Let us consider the original price/marked price of the table set was 'x'.

Then the formula for calculating the original price/market price is;

Marked price - discount = selling price

x - 40%of x = 240

x - (40x)/100 = 240

100x - 40x = 24,000

60x = 24,000

x = 400

Therefore, the original price of the table set was $400.

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if a circle passe though point (-4,2) and is tangent to the x-axis at (2,0), determine the coordinates of its center.

Answers

Answer:

The centre is at (2, 10).

Step-by-step explanation:
(x - a)^2 + (y - b)^2 = r^2 is a circle with radius r and centre(a, b).
It passes through the points (-4, 2) and (2, 0), therefore:-
(-4 - a)^2 + (2 - b)^2 = r^2 and
(2 - a)^2 + (-b)^2 = r^2
Now the x coordinate (a) of the centre is 2 (because of the tangent at (2, 0)
So, the equations become:
6^2 + (2 - b)^2 = r^2
b^2 = r^2
--> 36 + (2 -b )^2 -b^2 = 0
--> 36 + 4 + b^2 - 4b - b^2 = 0
--> 4b = 40
--> b = 10.
So the centre is (2, 10).

Solve for a

11 = -3/10a + 2

Answers

Answer:

a = -30

Step-by-step explanation:

In order to solve for a in the equation [tex]\sf 11 = \dfrac{-3}{10} a + 2[/tex], we can follow these steps:

Subtract 2 from both sides of the equation:

[tex]\sf 11 -2= \dfrac{-3}{10} a + 2-2[/tex]

[tex]\sf 9 = \dfrac{-3}{10} a[/tex]

Multiply both sides of the equation by [tex]\sf -\dfrac{10}{3}[/tex]:

[tex]\sf 9 *-\dfrac{10}{3}= \dfrac{-3}{10} a*-\dfrac{10}{3}[/tex]

-30 = a

Therefore, the solution to the equation 11 a + 2[tex]\sf \dfrac{-3}{10} a + 2[/tex] is a = -30.

4(u 1) - 1 = 2(2u - 3)

Answers

Answer:

4u+4-1=4u-6

4u+3=4u-6

4u+9=4u

9 I think

Step-by-step explanation:

Boris and Chip are playing a game with number cubes. They roll two cubes and subtract the two numbers. If the difference is 5, Boris wins. If the difference is 4, Chip wins. Is the game fair? Explain.

Answers

The computation shows that the game is not fair

How to illustrate the information?

It should be noted that the cube had numbers 1 to 6. Therefore, the difference of 4 can be either 6-2 or 5-1 .

On the other hand, the difference of 5 will only be 6-1.

Therefore, this is not fair

In conclusion, the game is not fair.

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-(10 + (-6))
-((-55) + 1
-2

Answers

Answer:

52

Step-by-step explanation:

-(10 + (-6)) - ((-55) + 1 - 2)

(-10 + 6) + (55 - 1 + 2)

(-4) + (56) = 52

I hope this helps!


What is the domain?
-3,5
0,4
3,5

Answers

Answer:

-3, 0, 3

Step-by-step explanation:

The domain is the set of all x values

What is the scale factor of the dilation of figure A to figure B?

a. 2/3
b. 3/2
c. 2
d. 3

Answers

B is the correct answer to this question

Find the quotient for -12 ÷ (-3).
a. -9
b. 4
c. -4

Answers

Answer:

b. 4

Step-by-step explanation:

A negative number divided by a negative number is a positive number.

Therefore, -12 ÷ -3 = 4.

recall that the distance between a point and the xz-plane is the absolute value of its ? -coordinate.

Answers

Remember that a point's y-absolute coordinate's value determines how far away it is from the x-z plane.

With an example, define a plane?

Other names for it include a two-dimensional surface. A plane has an endless width, an infinite length, zero thickness, and also no curvature. The flat surfaces of a cube or cuboid, as well as the flat surfaces of paper, are all true examples of geometric planes, despite the fact that it is impossible to envision a plane in real life.A plane geometry is a closed, two-dimensional, or flat, figure. The properties of diverse plane shapes varies, such as the number of sides or corners (or vertices). A corner, also known as the vertex, is where two sides meet. A side is a straight line that forms a portion of the geometry.

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What is the inverse funtion of F F(x)= 3-x/7

A. F-1(x)=3-7x
B. F-1(x)= 7+x/3
C. F-1(x)=3- x/7
D. F-1(x)= 7x - 3

Answers

Answer:

Replace y with f−1(x) f - 1 ( x ) to show the final answer. Verify if f−1(x)=x3+73 f - 1 ( x ) = x 3 + 7 3 is the inverse of f(x)=3x−7 f ( x ) = 3 x - 7

Step-by-step explanation:

Please help i will give out brainlist

Answers

1) The converse of "If you do no go to an Italian restaurant, then you like sea food" is; "If you do not like sea food, then you will go to an Italian restaurant"

2) The inverse of "If you do no go to an Italian restaurant, then you like sea food" is; "If you go to an Italian restaurant, then you don't like sea food"

3) The contrapositive of "If you do no go to an Italian restaurant, then you like sea food" is; If you do not like sea food, then you will go to an Italian Restaurant"

How to Interpret Conditional Statements?

1) The converse of a statement is formed by switching the hypothesis and the conclusion. The converse of "If two lines don't intersect, then they are parallel" is "If two lines are parallel, then they don't intersect." Thus, the converse of "If you do no go to an Italian restaurant, then you like sea food" is; "If you do not like sea food, then you will go to an Italian restaurant"

2) The inverse of a conditional statement is when both the hypothesis and conclusion are negated. Thus, the inverse of "If you do no go to an Italian restaurant, then you like sea food" is; "If you go to an Italian restaurant, then you don't like sea food"

3) The contrapositive of a conditional statement is to interchange the hypothesis and the conclusion of the inverse statement. The contrapositive of "If it rains, then they cancel school" is "If they do not cancel school, then it does not rain.". Thus, the contrapositive of "If you do no go to an Italian restaurant, then you like sea food" is; If you do not like sea food, then you will go to an Italian Restaurant"

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Eric teaches ceramics in his studio.he estimates that one out of every five people who call for information about a class will sign up for the class.last week he receive nine calls.find the probability that four or fewer of the people who called will sign up for a class

Answers

The probability that four or fewer of the people who called will sign up for a class = 0.9805

For given question,

Eric estimates that one out of every five people who call for information about a class will sign up for the class.

Last week he receive nine calls.

We need to find the probability that four or fewer of the people who called will sign up for a class.

Total number of calls = 9

⇒ n = 9

Since one out of every five people who call for information about a class will sign up for the class.

the probability of success (p) = 1/5

                                                  = 0.2

and the probability of failure (q) = 1 - p

                                                      = 1 - 0.2

                                                      = 0.8

To find the probability that four or fewer of the people who called will sign up for a class.

So, x would take values 0, 1, 2, 3, 4

Using Binomial principal,

For x = 0,

[tex]P(x=0)= ~^9C_0(0.2)^0(0.8)^{9-0}\\\\P(x=0)=0.13422[/tex]

For x = 1,

[tex]P(x=1)= ~^9C_1(0.2)^1(0.8)^{9-1}\\\\P(x=1)=0.30199[/tex]

For x = 2,

[tex]P(x=2)= ~^9C_2(0.2)^2(0.8)^{9-2}\\\\P(x=2)=0.30199[/tex]

For x = 3,

[tex]P(x=3)= ~^9C_3(0.2)^3(0.8)^{9-3}\\\\P(x=3)=0.17616[/tex]

For x = 4,

[tex]P(x=4)= ~^9C_4(0.2)^4(0.8)^{9-4}\\\\P(x=4)=0.06606[/tex]

So, the required probability would be,

P = P(x = 0) + P(x = 1) + P(x = 2) + P(x = 3) + P(x = 4)

P = 0.1342 + 0.3020 + 0.3020 + 0.1762 + 0.0661

P = 0.9805

Therefore, the probability that four or fewer of the people who called will sign up for a class = 0.9805

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Can anybody help!!!??? Pls

Answers

Answer:

thanks for the points x

Step-by-step explanation:

thanks

the following data was collected to explore how the average number of hours a student studies per night and the student's gpa affect their act score. the dependent variable is the act score, the first independent variable (x1) is the number of hours spent studying, and the second independent variable (x2) is the student's gpa. effects on act scores study hours gpa act score 6 2 30 4 4 25 3 4 25 2 2 19 1 4 27 step 1 of 2: find the p-value for the regression equation that fits the given data. round your answer to four decimal places.

Answers

The p-value is  0.1505 and y is 0.550x1 + 3.600x2 + 7.300.

What is a p-value?A p-value is a statistical measure used to test a hypothesis against actual data. A p-value estimates the likelihood of obtaining the observed results if the null hypothesis is true. The greater the statistical significance of the observed difference, the lower the p-value.

So,

Given:

Study Hours GPA ACT Score

5 4 275 2 185 3 181 3 202 4 21

Using technology, the P-value from the Fratio:

30.228571 / 8.190476 = 3.69 F = MSregression / MSresidual

The regression equation's P-value is:

Using the Fratio calculator's Value:

F(1, 3), 3.69 = 0.1505

Using the P-value method:

At α = 0.01P-value >

As a result, we cannot reject H0 and conclude that; there is insufficient evidence to demonstrate that the relationship is statistically significant.

The regression formula:

y = A1x1 + A2x2 +... AnXny = 0.550x1 + 3.600x2 + 7.300

The predictor variables are x1 and x2.

y = variable predicted

Therefore, the p-value is  0.1505 and y is 0.550x1 + 3.600x2 + 7.300.

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The complete question is given below:
The following data was collected to explore how the average number of hours a student studies per night and the student's GPA affect their ACT score. The dependent variable is the ACT score, the first independent variable (x1)is the number of hours spent studying, and the second independent variable (x2) is the student's GPA

Effects on ACT Scores

Study Hours GPA ACT Score

5 4 27

5 2 18

5 3 18

1 3 20

2 4 21

Step 1 of 2: Find the p-value for the regression equation that fits the given data. Round your answer to four decimal places.

Step 2 of 2: Determine if a statistically significant linear relationship exists between the independent and dependent variables at the 0.01 level of significance. If the relationship is statistically significant, identify the multiple regression equation that best fits the data, rounding the answers to three decimal places. Otherwise, indicate that there is not enough evidence to show that the relationship is statistically significant.

If y varies inversely as x cubed, and y = 12 when x = 5, find the value of y when x = 2.

Answers

Answer:

187.5

Step-by-step explanation:

[tex]\sf {If \; y \; varies \; inversely \; as \; x^3\; represented \; by\; y\propto \dfrac{1}{x^3}} \\then\\y = \dfrac{k}{x^3}\; where\; k \;is\; a \;constant\\\\== > k = y\cdot x^3\\\\When y = 12, x = 5 \;means\\\\k = 12.\cdot 5^3 = 12 \cdot 125 = 1500\\\\\sfTherefore \;when\; x = 2\\y = \dfrac{1500}{2^3} = \dfrac{1500}{8} = 187.5\\\\\sf Answer:\;\; \boxed {\sf y = 187.5\; \sf when\; x = 2}[/tex]


The drama club would like to build a theater in the round, so the audience can be seated on all sides of the stage, for its next production.

a. The stage is to be a regular octagon with a total perimeter of 60 feet. To what length should each board be cut to form the sides of the stage?

Answers

so if you take 60 by x and The sides of an octagon which is 8 you should have your answer

an invertible sheaf l on x is globally generated if and only if for any point p ∈ x, there is a global section of l not vanishing at p

Answers

an invertible sheaf l on x is globally generated if and only if for any point p ∈ x, there is a global section of l not vanishing at p

This fact leads to the first assumption naturally, but neither it nor the other implication can be proven.

What do you mean by vanishing?

Vanishing means to leave or cease existing, especially in an abrupt or unexpected manner.

I be a quasicompact sheaf that can be inverted. X

demonstrate the existence of an epimorphism O ⊕I/X →I

OX⊕I→I if and only if for any point p∈X

p∈X there exists a global section of I

L not vanishing at p

If there is an epimorphism, it is asserted on page 121 of Hartshorne's book O ⊕I/X→I

OX⊕I→I Afterward, a family of global parts exists

{si} i∈I

{si}i∈I of I

I such that Ip is generated by {si,}i∈I

{si,p}i∈I as O

X,p

OX,p-module for every p∈X

This fact leads to the first assumption naturally, but neither it nor the other implication can be proven.

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i just need help asap please

Answers

Answer:

wsg

Step-by-step explanation:

Answer:

Step-by-step explanation:

need help on what

What's 59.84 ÷ 32 please show work I have test tomorrow

Answers

The answer is 1.87.
1. You have to start of by solving using long division.
2. First big number inside
3. Second Small outside
4. Figure out how many times the smaller number goes into the big number
5. Subtract (in this case 32 from 59)
6. Bring down other number ( do not include decimal when bringing down)
7. Done!

What integer does 408 need to be divided by to equal -24?

Answers

The rule that applies with this kind of multiplication is that a positive divided by a negative must equal another negative. With that in mind, we can divide 408 by -24 to result in -17. To equal -24, 408 must be divided by -17.

if two groups of numbers have the same mean, then group of answer choices their standard deviations must also be equal. their medians must also be equal. their modes must also be equal. other measures of location need not be the same.

Answers

The correct answer is other measures of location need not be the same.

What is mean, mode, median and standard deviation?

When the group of numbers have the same mean then the other measures of location need not be the same. That means the standard deviation, median and mode should not be equal. All three widely used parameters that are mean, mode, median and standard deviation are the measure of central tendency.

If the given data has no outlier then mean value and the median value are closer to each other but the mode value is different. Similarly, standard deviation is calculated for the dispersion data. And it means when mean value is same then standard deviation will be different for a group of numbers.

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Other Questions
in the united states today, we wear pajamas (which originated in ancient persia), use mirrors (which originated in ancient egypt), and eat with forks (which originated in ancient rome). what mechanism of cultural change does this represent? what is the maximum velocity of an 89.0kg person bouncing on a bathroom scale having a force constant of 1.63106 n/m, if the amplitude of the bounce is 0.170 cm? A report comparing actual results to budgeted amounts that is often used to reward and evaluate employees is called a(n):_______ nononononononononononon Given 29.032 0.76, find the quotient. Write the expression that represents this phrase: the quotient of 10 and x Which Indigenous group included the Chiricahua, Jicarilla, Lipan, andMescaleros peoples?A. HavasupaiB. PimaC. ApacheD. Hopi which of the following prenatal blood or laboratory tests helps determine immunity to german measles? on March 19th 1965 in Selma Alabama a group of civil rights activist formed outside of City Hall the heartbeat of the group grew stronger as more supporters joined which pump more life into the peaceful protest how does the personification of the activists affect the writers message Write a dialogue between yourself and your mother or father in which you attempt to persued him or her in terms to allow to a family event or gathering tolerance is an allowance made for imperfections in a manufactured object. the manufacturer of an oven specifies a temperature tolerance of 15f. this means that the temperature inside the oven will be within 15f of the temperature to which it is set. write an absolute value equation to find the maximum and minimum temperatures inside the oven when the thermostat is set to 400f. let t represent the temperature inside the oven. A tissue is viewed using a microscope. the presence of tightly packed cells with a free surface and a basement membrane allows this tissue to be quickly identified as ____________. what was the japanese governments perspective on the pearl harblr attack ? what in the text makes you think as you think as you do ? Rutherford used a beam of alpha particles for his scattering experiment what is the de Broglie wavelength of an alpha particle moving at a velocity of 2.1510^7 m per second the driving distance between phoenix and los angeles is 599kilometers. the driving distancce between pheonix and chicago is approximately 2.3 x 10^3. a. which city is nearer to pheonix, los angeles, or chicago PLEASE ANSWER ASAPRead the poem "Knowledge" by Louise Bogan. Then, answer the question that follows.Now that I knowHow passion warms littleOf flesh in the mould,And treasure is brittle,I'll lie here and learnHow, over their ground,Trees make a long shadowAnd a light sound.Which of the following descriptions best defines the structure of Bogan's poem? Two couplets Two quatrains Two octaves Two tercets 17 added to 4 times a number is 57.(4n)17 = 57(17 + 4)n = 5717 + 4n = 5717 + 4 + n = 57 evaluate the expression choose the sentence in which the italicized pronoun agrees in number with its italicized antecedent or antecedents weegy >EXAMPLE 3Marcus is putting new tiles on his kitchen floor. Each file is 1 squarefoot. The kitchen floor is 6.1 feet wide and 9 feet long. Exactly howmany tiles will he use?