Mathematics College

Can some please tell me what this is?

Answers

Answer 1

Step-by-step explanation:

This is mean domain is all real numbers

Answer 2

X = all real numbers or ALM or that R symbol

Related Questions

What is the least common denominator of 3/5 and 2/15?

Answers

Answer:

Step-by-step explanation:

3/5 = 9/15

2/15 = 2/15

The least common denominator of 3/5 and 2/15 is 15

The least common denominator is the least product value of the given fractions

To do that, we will find the greatest value between the denominators of each fraction

Given the fractions 3/5 and 2/15, we can see that the two integers at the nominator are 5 and 15.

Since 5 can go in 15 without remainder, we do not need to multiply both integers again. The least common denominator will be the greatest value between 5 and 15 and that is 15.

Hence the least common denominator of 3/5 and 2/15 is 15

Learn more here: https://brainly.com/question/10600831

A school conducts 27 tests in 36 weeks. Assume the school conducts tests at a constant rate. What is the slope of the line that represents the
number of tests on the y-axis and the time in weeks on the x-axis?

А. 3/4
B. 4/3
C. 3
D. 4

Answers

Answer:

i think it would be 4 i'm not sure tell me if i'm wrong.

Answer:

Step-by-step explanation:

Group Tens as Hundreds
Write how many tens. Circle groups of 10 tens.
Write how many hundreds. Write the number.

Answers

Answer:

Write how many groups of tens there are

Circle groups where there are ten groups of tens

Write how many hundreds there are

Write the total number of tens and hundreds there are

I need an answer and a explanation so I can do the rest of them

Answers

Answer:

N=85 nickels

Q=18 quarters

9514 1404 393

Answer:

equations: q+n = 103; 0.05n +0.25q = 8.75

solution: q=18; n=85

Step-by-step explanation:

Write one equation for the number of coins:

q+n=103.

Write another equation for the value of the coins:

0.05n +0.25q = 8.75.

It is often convenient to substitute for the lower value, here, using n = 103-q. This results in an equation for q with positive coefficients.

0.05(103 -q) +0.25q = 8.75

5.15 +0.20q = 8.75

0.20q = 3.60

q = 18

n = 103 -18

n = 85

Wes has 18 quarters and 85 nickels.

PLEASE EXPLAIN HOW TO GET SOLUTION

Answers

Answer:

(3p^5)/2

Step-by-step explanation:

= (24p^10)/(16p^5)

= (3p^5)/2

Identify the following series as arithmetic, geometric, both, or neither.

Answers

I think that is arithmetic i not totally sure

Answer:

arithmetic

Step-by-step explanation: Hope this helps :)

Marisa said that multiplying 8.0 by 1,000,000 would increase the value of the 8 because there would be 6 more zeros after the decimal point. explain what is wrong in marisa's statement

Answers

Answer:

Step-by-step explanation:

Estimate. Then find the difference. 476-269

Answers

Answer: 207

Step-by-step explanation:

Hey there! I will give the following steps, if you have any questions feel free to ask me in the comments below.

Step 1: Use the algorithm method.

Step 2: Therefore, 476 − 269 = 207.

207

~I hope I helped you! :)~

You play a game with a friend they pul a marble out of the bag with 3 red marbles and 7 green marbles. If the marble is red you win$2 if the marble is green you lose $1 What is the expected value of the game for you

Answers

Answer:

Step-by-step explanation:

Amount of red marbles = 3red

Amount of green marbles = 7 green

If the marble is red and you win $2, the total amount of money won = 3 * $2 = $6

If the marble is green and you loose $1, the total amount of money lost = 7 * $1 = $7

The expected value of the game for you = amount won - amount lost

= $6 - $7

= -$1

This means the expected value is a loss of $1

What is the reciprocal of 3

Answers

Answer:

1/3

Step-by-step explanation:

3/1 backwards is 1/3

that's why its reciprocal is 1/3

hope this helps:)

Brett made a scale drawing of a rectangular room in his house.
The actual length of the room is 12 4/5 ft. The scale used to make the
drawing was 1/4 in. = 1 ft. What is the length, in inches, of the room
on the drawing?

Answers

Answer:

Step-by-step explanation:

Length of the room = 12 4/5 ft = 12.8 ft

Scale is 0.25 inches = 1 ft.

This means that every 1ft is shown as 1/4 inch on the map.

To find what 12 4/5ft on the map, you would multiply 12.8 by 0.25.

12.8 x 0.25 = 3.2 inches

can you help please/
?

Answers

Answer:

Step-by-step explanation:

Hope this helps!!

I think the answer would be B:)

During the 2004 senatorial campaign in a large southwestern state, illegal immigration was a major issue. One of the candidates argued that illegal immigrants made use of educational and social services without having to pay property taxes. The other candidate pointed out that the cost of new homes in their state was 20–30% less than the national average due to the low wages received by the large number of illegal immigrants working on new home construction. A random sample of 5,500 registered voters was asked the question, "Are illegal immigrants generally a benefit or a liability to the state’s economy?" The results were as follows: 3,500 people responded "liability," 1,500 people responded "benefit," and 500 people responded "uncertain."
a. What is the population of interest?
b. What is the population from which the sample was selected?
c. Does the sample adequately represent the population?
d. If a second random sample of 5,000 registered voters was selected, would the results be nearly the same as the results obtained from the initial sample of 5,000 voters? Explain your answer.

Answers

Answer:

The population of interest is the registered voters , this is because it is the population from which the sample size is selected from.

The population is the registered voters of the large southwestern state

Well this does not adequately represent the population because this sample where selected from only the registered voters of the large southwestern state and not the whole country

Yes the result will be nearly the same because

Both samples are selected from the same population The size of the sample selected is sufficiently large to approximate the population

Step-by-step explanation:

From the question we are told that

The sample size is n = 5,500

Considering question a

What is the population of interest

The population of interest is the registered voters , this is because it is the population from which the sample size is selected from.

Considering question b

What is the population from which the sample was selected

The population is the registered voters of the large southwestern state

Considering question c

Does the sample adequately represent the population

Well this does not adequately represent the population because this sample where selected from only the registered voters of the large southwestern state and not the whole country

Considering question d

Yes the result will be nearly the same because

Both samples are selected from the same population The size of the sample selected is sufficiently large to approximate the population

Could anyone be willing to help me with any of these 3 questions? :)

Answers

Answer:

X is 70

Y is 110

Z is 30

Step-by-step explanation:

Because a trangle have 180 degree inside

Answer:

Step-by-step explanation:

second one - for this one you would do 90 +30 = 120

then take this from 180 to get 60 . so if you can see that the shape is an f but that's if you take away the sides with the right angles . the corresponding angle rule (you can see an F shape) means that the angle that i just worked out is the same as angle c so angle c=60

third one - for this one do 70+30 then take this answer away from 180

that angle x

the rule for angle y is the vertically opposite angle rule - angle s that are vertically opposite are the same angle y= angle x - same angle

subtract rational numbers 4-10

Answers

Answer:

-6

Step-by-step explanation:

4-10

4+ (-10)

= -6

Rounded to the nearest tenth, what is the perimeter of rectangle ABCD?

A.
48.3 cm
B.
54.6 cm
C.
60.0 cm
D.
173.2 cm

Answers

Answer:

54.6 cm

Step-by-step explanation:

Hi there !

T30° => AD = AC/2 = 20cm/2 = 10 cm

T.Phytagoras

CD = √AC² - AD²

= √20² - 10²

= √400-100

= √300

= 10√3

= 10×1.73

= 17.3 cm

P = 2AD + 2CD

= 2×10cm + 2×17.3cm

= 20cm + 34.6cm

= 54.6 cm

Good luck !

A college Statistics class conducted a survey concerning community attitudes about the college's large homecoming celebration. That survey drew its sample in the following manner: Telephone numbers were generated at random by selecting one of the local telephone exchanges (first three digits) at random and then generating a random four-digit number to follow the exchange. If a person answered the phone and the call was to a residence, then that person was taken to be the subject for interview. (Undergraduate students and those under voting age were excluded, as was anyone who could not speak English.) Calls were placed until a sample of 200 eligible respondents had been reached.

Required:
a. Did every telephone number that could occur in that community have an equal chance of being generated?
b. Did this method of generating telephone numbers result in a simple random sample (SRS) of local residences? Explain.
c. Did this method generate an SRS of local voters? Explain.
d. Is this method unbiased in generating samples of households? Explain.

Answers

Answer:

A) Yes

B) No

C) No

D) No

Step-by-step explanation:

A) Yes, every telephone number that could occur in that community will have an equal chance of being generated because the telephone numbers were generated randomly.

B) No, this method of generating telephone numbers would not result in a simple random sample (SRS) of local residences because the first three digits were generated in a different random way than the last four digits.

C) No, this method would not generate an SRS of local voters because not everybody will be pick up when they call because they may not be at home or they may be too busy to pick up.

D) No, this method is not unbiased in generating samples of households because there will be nonresponse bias since not everyone will pick up the call

Please help me I need it right now

Answers

Answer:

X+y=180, Y=Z, X+Z=180

Step-by-step explanation:

Answer:

The linear model is not appropriate.

Step-by-step explanation:

In regression, the difference amid the observed-value of the dependent-variable (y) and the predicted-value ([tex]\hat y[/tex]) is known as the residual (e).

[tex]e=y-\hat y[/tex]

A residual plot is a graphical representation of the residuals on the y-axis and the independent variable on the x-axis. If the data-points on the residual plot are randomly spread around the x-axis, a linear regression model is appropriate for the data. And if the residual plots shows a non-random or a U or inverted U pattern, a nonlinear model is more appropriate for the data.

The residual provided shown an inverted U pattern. That is the points are not scattered around he graph.

Thus, the linear model is not appropriate.

A residual plot for the nutrition data would display the residuals on the y-axis and the age on the x-axis.

The residual plot is not appropriate for a linear model.

From the residual plot (see attachment), we can see that the points on the residual plot follows a curved pattern.

For a residual plot to be a linear model, the points on the plot must be at random on the horizontal axis of the plot.

This means that, the residual plot is not appropriate for a linear model.

Answers

Answer:

Step-by-step explanation: To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .

Answer:

The slope is 2/3

Step-by-step explanation:

The equation that the graph gives us is y = 2/3x + 3.

With this equation, we know that the slope is 2/3.

Bonus:

With this equation, we also know that the y-intercept is 3.

what is the measure of angle BCD?

Answers

Step-by-step explanation:

here is my step by step so first you look at the two inner angles which in this case are B and C then you multiply them together to get your angle D.

D) 9 3/7

Step-by-step explanation:

4 2/7 × 2 1/5

=30/7 × 11/5

= 30 × 11/7 × 5

=330/35

=330 ÷ 5/35 ÷ 5

=66/7 = 9 3/7

Other Questions

Write the equation of a line in slope-intercept form with a slope of -1 and a y-intercept of -1. y = -x - 5 y = -5x - 1y = -x-1y= -5x -5 Answer please!!Christopher Columbus and other navigators of his time were looking primarily for...(choose all that very)1.new trade routes to Asia2.new trade routes to Australia3.new trade routes to Africa4.new trade routes to the Americas Given: Y is the midpoint of XZProve: XY = 1/2 XZStatementsReasons X + (-9) = 32What is the answer Lovely Lotion Inc. produces three different lotions: hand, body, and foot. The lotions are produced jointly in a mixing process that costs a total of $250 per batch. At the split-off point, one batch produces 80, 40, and 25 bottles of hand, body, and foot lotion, respectively. After the split-off point, hand lotion is sold immediately for $2.50 per bottle. Body lotion is processed further at an additional cost of $0.25 per bottle and then sold for $5.75 per bottle. Foot lotion is processed further at an additional cost of $0.85 per bottle and then sold for $4.00 per bottle. Assume that body and foot lotion could be sold at the split-off point for $3.00 and $3.20 per bottle, respectively. 1. Using the market value at split-off method, allocate the joint costs of production to each product. 2. A lotion manufacturing company produces three types of lotions. After the split-off point the company continues to sell the body lotion and makes $0.25 profit per bottle. The foot lotion generates $0.05 loss per bottle. Which lotion should be continued after the split-off point? A. Hand lotion.B. Body lotion.C. Foot lotion.D. Body and foot lotion.3. Allocate the joint costs of production to each product using the net realizable value method. HELP!Which of the following functions represents the values in the table below? x 0 2 4 6 f(x) 2 10 66 218 f(x) = -3x - 2x^2f(x) = x^2/2f(x) = 2 + x^3f(x) = 3x - 2 What is the definition of racial inequity Discuss the similarities anddifferences between European and Japanese feudalism during the period600-1450 CE. A regional automobile dealership sent out fliers to prospective customers indicating that they had already won one of three different prizes: an automobile valued at $, a $ gas card, or a $ shopping card. To claim his or her prize, a prospective customer needed to present the flier at the dealership's showroom. The fine print on the back of the flier listed the probabilities of winning. The chance of winning the car was 1 out of , the chance of winning the gas card was 1 out of and the chance of winning the shopping card was out of 31,866, the chance of winning the gas card was 1 out of 31,866, and the chance of winning the shopping card was 31,864 out of 31,866.Required:a. How many fliers do you think the automobile dealership sent out?b. Using your answer to (a) and the probabilities listed on the flier, what is the expected value of the prize won by a prospective customer receiving a flier?c. Using your answer to (a) and the probabilities listed on the flier, what is the standard deviation of the value of the prize won by a prospective customer receiving a flier? Which activity offers the most health benefits? Idk if its A. Or D. Please help! Find the average rate of change from a table. You move down 3 units. You end at (5,-2). Where did you start? PLEASE HELP ASAP!! IF YOU CAN what is 917 divided by 63 5. What happens to the force between the two spheres of the samemass when the distance the mass Spheres is halved? What is the Amercian Realuchion? 7 1/5 - 6 2/5 = ?A. 1 4/5B. 4/5C. 13 3/5D. 1 1/5 Write and solve the equation, and then check your answer.The sum of two and two tenths and a number is five.Which statements are correct? Check all that apply.A.The word sum means the result of adding two numbers. B.The correct equation is n 2.2 = 5.C.The correct equation is n + 2.2 = 5.D. The solution of the equation is n = 7.2.E.The solution of the equation is n = 2.8.F.Check the solution by substituting the value for n and simplifying. PLEASE HELP! WILL MARK BRAINLIEST! What historical event left the Greeks weak and divided?