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Mathematics Questions and Answers March 20, 2021

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algebra 1213 Problem 12. (4 points) Find a basis for the space of 2 X 2 symmetric matrices Basis Problem 13. (8 points) Determine which of the following transformations IT : R -> R. are linear 1.7(x) = (42, 6)" v 2T(x) - (31 2 5)7 3. T(x) - 10. 10z2) Yes No
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A taxicab charges $1.50 for the flat fee and $0.50 for each mile. Write an inequality to determine how many miles Sharon can travel if she has $25 to spend. $0.50 + $1.50x $25 $0.50 + $1.50x $25 $1.50 + $0.50x $25 $1.50 + $0.50x $25

Construct a PDF. (Enter your answers for P ( X = x ) as fractions. Round your answers for x P ( X = x ) to two decimal places.) XP ( X = x ) x P ( X = x ) 6 4 or 5 1, 2, or 3

Determine whether the given function is linear or X nonlinear, If it is linear, determine the slope X NTOFN TNT Is the function a linear function? Yes Select the correct choice below and fill in any answer boxes within your choice Is O A. The slope of the function is 0) B. The function is not linear
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Question 1 The population of newborn babies (i.e., younger than 3 months old) produces an average of = 12 dirty diapers with a standard deviation of = 4. If you randomly selected n = 36 newborn babies, how well on average will the sample represent the population (i.e., what is the expected difference between the sample and population mean by

Consider the function f(x)=x^(2)e^(6x) f(x)has two inflection values at x = C and x = D withCD where C is _________ and D is ________ Finally for each of the following intervals, tell whetherf(x)is concave up or concave down. (,C]: [C,D]: [D,):

1. In the table below, briefly define each of the identified crisis situations. Crisis Situation Definition (in your own words) Potential or attempted suicide Self-harm Received threats Abuse, including child abuse Domestic and family violence Exasperation of serious mental illnesses Threats to harm others
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If discipline is to be perceived as fair, which of the following must it also be? Question 8 options: a) Confusing b) Consistent c) Contradictory d) Conforming

2. Whom did General Washington refer to as doctor? a. John Adams c. Benjamin Franklin b. James Madison d. nobody
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ARE BUILT INTO SATLITTES TO LEARN HOW TEMPERATURE CHANGE AT DIFFERENT HEIGHTS. wHICH ONE IS THE RIGHT ANSWERS? DETECTORS, NASA, ORVITER, SATELLITE SYSTEM, TRANSMITTER, WEATHER SATELLIETE

Stock A has a mean of 3% and standard deviation of 15%.Stock B has a mean of 8% and standard deviation of 22%.The two stocks have a 0.30 correlation.Graph the frontier of combinations of the two stocks, solve in excel.

Given:log b 2= 0.4, log b 3 = 0.5, and log b 5= 0.6.Use properties of logarithms to find the following values. log b 75 log b 0.4

fix the orthographic views - some dimensions are duplicated, some dimensions are not in the right place, and some dimensions are missing

Find the coordinates of the points that are 5 units away from the origin and havean x-coordinate equal to 3.

An manufacturer of small electronic appliances knows that her products have a normally distributed lifespan with a mean of 20 months and a population standard deviation of 10 months.The manufacturer wants to establish a warranty for defective products.However, she wants to have to replace no more than 2.5% of the products that is, she wants the

Socks in a drawer: In your sock drawer you have 4 blue, 5 grey, and 3 black socks. Half asleep one morning you grab 2 socks at random and put them on. Find the probability you end up wearing (Round each answer to four decimal places if necessary.) 2 blue socks. no grey socks. a green sock.

Stoichiometry Practice 1. Hydrogen sulfide gas, which smells like rotten eggs, burns in air to produce sulfur dioxide and water. How many moles of oxygen gas would be needed to completely burn8 moles of hydrogen sulfide? 2H 2 S(g) + 3O 2 (g) 2SO 2 (g) + 2H 2 O(g) 2. Ammonia, NH 3 , for fertilizer is made by causing hydrogen and nitrogen to react

You build a sequence model to classify text. Each word in the sequence is represented as a 512-dimensional word embedding. Your vocabulary size is 5,000 words and your sequence length is 500 words. How many 'x' values are there in your model

In the figure shown, picture a tiny 260nC of charge is sitting exactly at corner A of the pyramid, and assume that only 1/13 of the total field lines that emerge from the point charge is received by the pyramid. The total electric flux that emerge from the charge and the fractions that faces ADE, AEB, ACB, ADC, and EBCD receive in Nm2/C are total

What best describes farmers in the United States? Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer. a Farmers are usually over 55 years old and account for 1% of the population. b Farmers are usually over 55 years old and account for 5% of the population. c Farmers are usually over

AFTER A THOROUGH PHYSICAL EXAMINATION, A CHILD IS DIAGNOSED WITH RECURRENT ABDOMINAL PAIN. PATIENT AND PARENT COUNSELING SHOULD INCLUDE: ACKNOWLEDGEMENT THAT THE PAIN IS REAL, ALTHOUGH THERE IS NO KNOWN PHYSICAL CAUSE; EXTENSIVE EDUCATION ABOUT INFLAMMATORY BOWEL DISEASES AND THE APPROPRIATE MEDICATIONS FOR TREATMENT; A LIST OF HIGH-FIBER FOODS

Suppose X1, , Xn N(, 2), and 2is known. H0: = 0vs. H1: 6= 0 Construct a critical region with significance level and draw the graph of the power function of the test.

4. Calculate the given length of side B in a triangle. X = 40, Y = 60, and side a = 8. what would be the result

Write out $7.640880 million to the nearest dollar. (Remember not to include "$" or "," in your answer.)

A psychology professor at a university is interested in determining the proportion of undergraduatestudents at her university who self-identify as early-risers, night-owls, or neither. She decides to performan observational study to investigate this question, so she randomly selects 500 undergraduate students from a university with 29016

Suppose that the functions u and ware defined as follows. u (x) =x+ w (x) = vx+8 Find the following. (w ou) (8) = 1 (u . w) (8) = 1 X
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What was the exact likelihood of obtaining the r value at least as extreme or as close to the one that was actually observed, assuming that the null hypothesis is true?

I need help with this question. No work is needed just the answer thanks A linear transformation T : R3 R' is given by 1 x1 - 3x2 T DC 2 -4x1 + 2x3 C3 2x1 - 5x2 - 323. 2 Find a such that T( x ) = 6 O 11 x = -6 16 O N Co
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Scores on an IQ test are normally distributed. A sample of12 IQ scores had standard deviation= s 7 . (a) Construct a90 % confidence interval for the population standard deviation .Round the answers to at least two decimal places. (b) The developer of the test claims that the population standard deviation is= 8 . Does this confidence interval

Cul de los siguientes eventos provocara el fin de una forma de cobertura de riesgo de constructores de propiedades comerciales? A. El edificio es aceptado por el comprador. B. Se vierte la base del edificio en construccin. C. Un ao despus de la finalizacin del edificio. D. El edificio est terminado al 50%

Derrick wants to divorce Melinda, his wife of six years but Melinda wants to stay married. The couple lives in Florida and they have two daughters, age 6 and 4. While on a business trip to las Vagas, Derrick hops over to Reno and obtains a quick divorce without difficulty, pursuant to Navada law. He returns home and hands the divorce decree to

State whether you're using the Law of Sines or Law of Cosines then find the missing dimensions. (i.e. Solve the Triangle) Show all work. Round answers to the nearest whole number. "= Solve for all angles and sides for each triangle"
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Use induction to prove that a ar ar2 arn = a(rn 1 1) r 1

Given f (x) = 5 / cos 2 x - 1 , find any vertical asymptotes over the interval [-2 , 0 ]

Evaluate the function f(x) =x-2x + 7 at the given values of the independent variable and simplify a. f(9) _ b. f(x +8) c. f( -x)
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Let X B(n; p). What value of p maximizes P(X = k), k = 0; 1; . . . ; n? This is an example of a statistical method used to estimate p when a B(n; p) random variable is observed to equal k. If we assume that n is known, then we estimate p by choosing that value of p which maximizes P(X = k). This is known as the method of maximum likelihood

Organize the following data into a stem-and-leaf display where the following is true. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) 185,143,217,183,183,218,189,145,219,143 186,188,146,212,213,211,140,148,211,181 (a) the stem has one digit StemLeaf 1 2 (b) the leaf has one digit StemLeaf 14 18 21

Which Phone Plan to get? Verizon charges $50 a month and $10 per gigabyte used. T-Mobile charges $30 a month and $15 per gigabyte used. Set up 2 equations: Y, total cost X, number of gigabytes used each month After how many gigabytes are the plans equal to each other? If you use 2 gigabytes a month which plan is cheaper? If you use 20 gigabytes a

Transform each of these statements into a question. Then answer the question in the affirmative and in the negative. J'ai vingt et un ans

If there were 49 cars in a line that stretched 528 feets, what is the average car length?

When laboratory microorganisms are treated with Kickoff brand pesticide, only 65% of the microorganisms survive. What proportion of the microorganisms is killed by the pesticide? Group of answer choices 7/20 35 0.65 3.5 65

The cost to fill your motor home's propane tank is determined by the function C(g) = 2.77g where C(g) is the output (cost in $) and g is the input (gallons of gas). The propane tank can hold a maximum of 14 gallons

3-15 Add a spherical wrist to the three-link cylindrical arm of problem 3-13 and determine the complete inverse kinematics solution

A node in the preferential attachment model on average has a higher degree than nodes added later. If a preferential attachment model does not include the preferential attachment mechanism, its degree distribution can still satisfy the power-law. The degree exponent of a preferential attachment model depends on the number of links added at each

In a trial of 75 patients who received 10-mg doses of a drug daily, 27 reported headache as a side effect. Obtain a point estimate for the population proportion of patients who received 10-mg doses of a drug daily and reported headache as a side effect.

A hypothetical study interviewed 300 youths living in the streets of Phoenix and 110 youths living in the streets of Flagstaff. 20% of the Phoenix youths had worked in the sex trade within the last week, whereas 70% of the Flagstaff youths had. Construct 95% confidence intervals around these percentages. Interpret the results. 95%= 1.96 z-score

Need help with this algebra problem. Step by step will help me understand it better. Thank you \f
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Whats t he difference between Classical and Empirical probability? What is an example of each?

A casino has the following game: you flip three coins. If you get exactly 2 heads, you win $2. Otherwise, you win nothing. If it costs $1 to play this game, what is your expected profit if you play this game?

Consider the following matrix A and it's inverse A, 0 0.5 O O HO A = 0 A-1 = O (1) ON Let the "entry-wise" 3-norm of a m x n matrix B (or vector) be defined as m n 1/3 1|Bl|3,3 = (2) i=1 j=1 Note, this norm is similar to the Euclidean-norm, just replacing the 2 with a 3 in the power and the root. Provide your answers with at least 6 digits. a) By
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Total Force Integration is necessary primarily because it allows units to ______________

(AvD)>W, ~(BvC), R=(C*T), ~R=A, therefore prove ~(W>C)

WHS Meeting Identified Hazards Reported to Action required / Supervisor taken Risk Assessment Record at least one existing howard and ne potential hazard that you are Risks associated with Urgent or Non-urgent & Yes No sporting as part of the meeting and only hazard reason ctions you took WHS Meeting Minutes
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A small agency is going to run one four possible promotional campaigns for a client who is introducing a new product. The success of the activity depends on the demand for the product. The net returns (in thousand of dollars) under different scenarios are shown below. Answer the next question. High Medium Low Aggressive 30 18 -3 Strong 25 20 2

Three cards are picked:What is the probability of not getting three hearts?

6. Evaluate ) dS where S is the surface of the graph z = x+ y, OSx$1, 0sys2
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With Elliptic curves: There is exactly one other point where 1 intersects the elliptic curve, and that is the negative of the sum of P and Q. After some algebraic manipulation, we can express the sum R=P+Q as follows: a. x_(R)=-x_(P)-x_(Q),y_(R)=-(x_(P)-x_(R)) b. x_(R)=lambda^(2)-x_(P)-x_(Q),y_(R)=-y_(p)+(x_(P)-x_(R)) c.

On the Model worksheet, in cell B18, use the VLOOKUP and RAND functions to randomize the retrieval of a risk level from column F in the ClaimRisk named range. The RAND function will serve as the lookup value.

All of the following describe the components of the DESC Script, EXCEPT Group of answer choices Direct, Engage, Supply, Contain Diagnose, Examine, Select, Confirm Describe, Express, Suggests, Consequences Determine, Evaluate, Select, Conclude

In what shape is Dante's version of hell? Question 16Answer a. A single road b. A funnel shaped cone c. A stair-shaped descent d. A vast maze

Only answer b A sample of 1081 hospitalized patients in China, with laboratory-confirmed Covid-19, was obtained. Fever was present in 473 of these patients when they were first admitted to the hospital (Source: New England Journal of Medicine, February 28, 2020). (a) Calculate a 99% confidence interval for the population proportion (p) of Covid-19

16. Hans was born in 17. For Sweden residents, the average number of legs is legs/person. 18. Francis Galton came up the concept/ realization of the 19. The Poisson distribution describes the number of Prussian Officers by their ho 20. Florence Nightingale started collecting data on & at age nine. 21. During the war she collected mortality data &
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Find \frac{z_1}{z_2} in polar form: z_1=21cis(135^ \circ) z_2=3cis(75^ \circ)

What is the formula for geographic buying power? Multiple choice question. GBP = Salary of City 1 x Index Number of City 2 x Index Number of City 1 GBP = (Index Number of City 1) / (Index Number of City 2 x Salary of City 2) GBP = (Index Number of City 1 x Salary of City 1) / (Index Number of City 2) GBP = (Salary of City x Index Number City 2) /

For two sets P and Q, mathematicians dene the symmetric dierence of P and Q (written P Q). The symmetric dierence of two sets are the elements that are in either set, but not both. C-ST3 Use the roster method to determine P Q, where P = {1, 3, 5, 7} and Q = N [1, 5]. C-ST3 Determine P Q, where P = {x|x is a computer science major} and Q = {y|y is

A certain make of cloth has on the average one defect per 20 square meters. What is the probability that a roll, 2 meters wide and 30 meters long, will have one defect?

Complete the sentences below with the appropriate forms of gustar. Don't forget to include the pronouns. Question at position 4 4 2 points Question at position 4 A ti Question Blank 1 of 2 le Question Blank 2 of 2 gusta beber un caf a las 10am

a 150 acre field yielded 3,600 bushels of wheat. what is the unit rate of bushels per acre

Employee Benefits
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1. Suppose that we have a problem for which the null and alternative hypothesis are given by: H 0 : = 660. H 1 : > 660. Is this a right-tailed test, left-tailed test, or two-tailed test. Find the z value based on a level of significance of =.05

2. a. Fill in the table and sketch the graph of the following equation. [A10], [C2] f(x) = -2x - 5 3x + 18 Vertical Horizontal x- intercept y- intercept Domain asymptotes asymptotes
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You are a Captain of a 787 bound from Honolulu, Hawaii, to Tokyo, Japan. Your flight plan is all set from dispatch, but you read of a volcanic eruption that has occurred near your route. You ask for the plot of the ash plume of this eruption and see that it covers the whole route at all altitudes and ask yourself: Is the risk acceptable? It is

Plot both the function f(), and its integral R f(x) dx (as area under the curve) on the same plot for each of the following functions (take 8 x 8): 2. f(x) = 2x + 1 Color curves for f in green and "rectangles" in red, values for f(x = 1) and f (x = 1) in black

1. Isabel Briggs Myers was a pioneer in the study of personality types. The personality types are broadly defined according to four main preferences. Do married couples choose similar or different personality types in their mates? The following data give an indication. Similarities and Differences in a Random Sample of 375 Married Couples Number

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Question 16 When A and B are mutually exclusive, P(A or B) can be found by adding P(A) and P(B). True False Question 17 Customers at a popular roti shop were asked whether they preferred their roti with soft drink or juice. 69% said that they preferred their roti with soft drink. 55% of the respondents were male. 89.09% of the males preferred

Determine the width of the given confidence interval. An environmental journal discussing current water usage within the US reports, with 95% confidence, the average number of household gallons used per person per day is between 82 and 88.The study was based on a random sample of 30 individuals throughout the nation. Question 15 options: 82 88 3

A cell phone company offers 13 different voice packages and 16 different data packages. Of those, 9 packages include both voice and data. How many ways are there to choose either voice or data, but not both?

Suppose that a family has 5 5 children.Also, suppose that the probability of having a girl is one half 1/2. Find the probability that the family has the following children. Exactly 3 girls and 2 boys

I need assistance finding the indicated z score with the chart. \f
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Please see attached for question. Topic is Predictions from the least-squares regression line. The first drop box answer option is Greater than, or less than. The second question answer drop box is increase or decrease. \f
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please provide answer with formula A B C D E F G H K L M N P R S T U 20 pts. Loan Amt: Build a model that shows the details of the standard 30-year mortgage when the loan APR: amount, APR & loan date are given, and payments are due at the end of each month. Loan Date: For the date, assume that - althought payments are due the end of each month -
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Write the correct forms of the conditional perfect for the following verbs. Question 1 with 1 blank ustedes (cerrar) 1 of 1 Question 2 with 1 blank yo (ir) 1 of 1 Question 3 with 1 blank ella (resolver) 1 of 1 Question 4 with 1 blank t (hacer) 1 of 1 Question 5 with 1 blank nosotros (hablar) 1 of 1

Contango is a situation where the futures price of a commodity is higher than the spot price. In all futures market scenarios, the futures prices will usually converge toward the spot prices as the contracts approach expiration. Advanced traders can use arbitrage and other strategies to profit from contango. Contango tends to cause losses for

To estimate a population parameter (such as the population mean or population proportion) using a confidence interval first requires one to calculate the margin of error, E. Why will there always be errors when using a sample to estimate a population? It is possible to use a sample to estimate a population parameter with 100% accuracy? Explain.

Linear Model formulation and constraint statement. I solve the problem but i have difficulties stating the Obj function and the constraints \f
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\fh. Interpret the level of significance in the context of the study. C] There is a 10% chance that you are so much smarter than your sibling that there is no need to take an IQ test to make a comparison. C] There is a 10% chance that the population mean IQ score is the same for younger and older siblings. C] If the population mean IQ score for
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Linear Algebra Final answer only - No Explanation Section 5.5 Orthonormal Sets: Problem 1 (1 point) Find the missing coordinates such that the three vectors form an orthonormal basis for IR" : -0.6 -0.8 -0.6Section 2.1 Determinant: Problem 11 (1 point) Given the matrix a A = a 5 5 a find all values of a that make the A|= 0. Enter the values of a
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Please answer within one hour for example thanks Question 7 0/7 pts 9 2 0 Det 67 -7 6-5 -4 -3 -2 4 6 7 1-2- 1 -5 Q List the interval(s) on which the function is increasing: List the interval(s) on which the function is decreasing: Check Answer Submit and End
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" Evaluate functions Algeo D 218 06 1 1595661c86/evaluating-functions/e/functions_1 ent is 100% free. Khan Academy Get Al Tutoring NEW Donat Evaluate functions FL.BEST.Math: MA.912.F.1.2 ) Google Classroom h(x) =17+ - 6 h(-18) Stuck? Review related articles/videos or use a hint. Do 4 probler acer
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1.An extensive study of the cost of health care in the US presented data showing that the mean spending per Medicare enrollee in 2003 was $6883 (Money, Fall 2003). To investigate difference across the country, a researcher took a sample of 40 Medicare enrollees in Indianapolis. For the Indianapolis sample, the mean 2003 Medicare spending was $5980

Hello can you provide a script on how to report these pictures below especially for each illustration and include explanation as possible. Chapter 11 - Fringe Benefit Tax Educational Assistance to the Employee or his Dependents Educational assistance to the employee is generally taxable except when it is incurred for the convenience or furtherance
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Find an equation for the line with the given properties. Express your answer using either the general form or the slope-intercept form of the equation of a line. Perpendicular to the line y = - 7x - 4; containing the point (1,3) The equation is (Type an equation. Simplify your answer.)
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15 (5 points) Title:AlgwFin-U8-Test-Std17-48 Use the formulas below to predict the resale value in 30 years of a home with a present value of $70,000 and an annual growth rate of 3.4%. Future growth = (1 + annual rate)years Future value = (Future growth)(Current value) a $72,380 b $2,100,000 c $93,800 d $190,862

PEP, or post exposure prophylaxis, involves treatment with antiretroviral medications after a potential exposure to HIV. Treatment should begin within how many hours of exposure? radio_button_checkedradio_button_uncheckedA) 12 hours radio_button_checkedradio_button_uncheckedB) 24 hours radio_button_checkedradio_button_uncheckedC) 48 hours

what does Natural observation if? Discuss examples of when a naturalistic observation study would be the most appropriate design to select. what are tow sources of bias during an observation period.

math satistic Question 23 (4 points) A Kaiser Family Foundation poll for US adults in 2019 found that 55% of Independents supported a generic "national Health Plan." If we wanted to estimate this number to be within 1% with 90% confidence, what would be an appropriate sample size? 4066 9508 6698 4072
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A company manufactures both mountain bikes and trail bikes. The cost of materials for a mountain bike is $70, and the cost of materials for a trail bike is $50. The cost of labor to manufacture a mountain bike is $70, and the cost of labor to manufacture a trail bike is $30. During a week in which the company has budgeted $2,300 for materials and

The Mersenne number M, is composite whenever n is composite. For the composite number n = 8, find M, = 2" - 1. M =2"-1= (Simplify your answer.)
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If I was applying this theory to trucking, when it comes to logistical statistics and understanding late loads and so many other variables involved... At what point does a n opinion separate from statistical inference? For example how do I separate someone's opinion in a statistical analysis?

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