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Mathematics Questions and Answers September 23, 2021

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60% of residents in Santa Clara have incomes over $90,000 and 70% have two cars. In addition, 80% of the residents whose income is over $90,000 have two cars. Q4. What is the probability that a resident has two cars and has an income over $90,000 per year? Q5. What is the probability that a resident has two cars and has an income less than or

ige in the price of the stock! What should be the prices of the following preferred stocks if comparable securities yield 7 percent? Why are the valuations different? a. MN, Inc., $8 preferred ($100 par) b. CH, Inc., $8 preferred ($100 par) with mandatory retirement after 20 years
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In this activity you will find the LU decomposition of a matrix, utilize the decomposition to solve a system of linear equations, and check the solution using the "\\" operator. Consider the linear system of equations: 4x)+3x-5x3=2 4x1 = S5x2+ Txz = 4 4x; 4+ 30 4x3=3 %Create the coefficient matrix C and and the column matrix d of constants.
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Weatherwise is a magazine published by the American Meteorological Society. One issue gives a rating system used to classify Nor'easter storms that frequently hit New England and can cause much damage near the ocean. A severe storm has an average peak wave height of ? = 16.4 feet for waves hitting the shore. Suppose that a Nor'easter is in
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1.A college dean obtains an alphabetical list of all full-time students at her college and selects every 50 th name on that list to survey those students regarding the total amount of student loan debt that they will have upon graduating. She then reports this average (mean) amount of debt among these students as the average of all college

My numbers 22 & 28 Simplify each expression using the rules of exponents and examine the steps you are taking. Incorporate the following five math vocabulary words into your discussion. Use bold font to emphasize the words in your writing. Do not write definitions for the words; use them appropriately in sentences describing the thought behind

Growth rates : joe maur a catcher for the Minnesota twins is expected to hit 15 home runs in 2018. Of his home run hitting ability is expected to grow by 12 percent every year for the following five years, how many home runs is he expected to hit in 2023?

What annual rate with continuous compounding would be required for a debt of $1,361 to grow into $3,613 in 17.1 years? In this question you will need to solve forr in FV = PVert. Start by dividing both sides by PV. Thenuselogarithms to "bring down"the exponent. Round your answer to the nearest tenth of a percent.

P ( x ) = 0 . 5 x 2 + 4 0 0 x 6 , 0 0 0 Generate a graph of the following profit equation how do I draft the equation and put on a graph. I am confused what number do I use to make the graph correct or do I put all the number s on the Desmos Graph. Please help me

3. Find a matrix A such that the column space is spanned by the vectors 2 and whose null space is spanned by the vectors CO 13 10 14 11 15 12 16
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1. In both parts below, find the vector p as the projection of b to the line through a . Also find the projection matrix P and the error vector e = b - p. Check that e is orthogonal to a . For (b), also explain the reason behind the result you get for p . (a) (b) -2 b = OHOH a =
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Problem 2H (chi-square random variables with 71 degrees of freedom). Given a standard Normal r.v. Z N N (0, 1), let us dene the new random variable T = Z2. In Problem 1A you computed the p.d.f. of such random variable, called a X2 (chi-square) p.d.f., namely 1 1 mt) = \"g \"5 0 otherwise. % fort20, If we compare this with the general form of an
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Use the binomial theorem to expand ( x 2 - 2 y ) 6 \f
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Chapter 9 Question SHOW YOUR WORK Clearly identify your answer. Insert your work for the problem under the question in this document and turn into the correct weekly assignment in D2L. MAKE SURE YOU ARE SHOWING WORK. Use the Law of Cosines to solve the trial- cl.lead- -. the solution to the triangle. SOLVE 1) A Solve all the missing parts - write
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Describe what it means for a relation to be a function. How can you tell whether a relation is a function or not when looking at different representations? (Ex: Mapping, Table, Graph, Coordinate Pairs) What is function notation? (Ex: Like in the equation below) Explain how to evaluate this function: f ( x ) = 3 x 2 -5x + 21 for f (-4) Use correct

2. [2D points) During the 2020 COED-19 pandemic, the United States faced a shortage of medical face masks. To save the medical masks for health care workers, people were advised to wear cloth masks in public. In a 2015 studyz, health care workers in Vietnam were randomized to wear either medical face masks or cloth masks during their shifts for
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Suppose that the variation of the atmospheric pressure P in millibars at t hours after the sunrise is given by the following mathematical function: \f
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determine the largest possible domain of the hyperbolic cosine f(x) = cosh x such that f (x) is one-to-one. Find the inverse of f (x) and states its domain and range

A researcher is interested in investigating whether Uber drivers are more satisfied with their job than Taxi drivers. She creates a multi-item scale that includes several questions. The scale ranges from a minimum of 1 (not satisfied) to 10 (extremely satisfied), and assumes that taxi drivers will be more satisfied with their job. She randomly

What are the equilibrium quantity and equilibrium price for an item whose supply and demand functions are: Supply function: p = q 2 + 20q Demand function: p = 2q 2 + 10q + 8000

X+1 DI (-00 - 3) U ( - 3 3 ) U -9 V: X= - 3,3 (30 ) H: 4 = 0 X = (-1,0) y= (0, -9) Graph
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question 4 ????? G nsc.instructure.com C Quizzes PSY 210 003 - Intro to Statistical Methods - Fa20 - Zoom Psych 210: Exam 2 + 4. Scores on a measure of self-efficacy (the belief that you can solve problems in your life) form a normal distribution with a mean of u = 60 and a standard deviation of o = 15. Find the sample means that create the outer
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Graph the solution set of the following linear inequality: 6x+8 <6y+8 The line will be drawn once all required data is provided and will update whenever a value is updated. The regions will be added once the line is drawn

Fill in the Blank Question When a statistic Is used to estimate a parameter, it Is referred to as an

Prove that the ring R is not Noetherian. Prove that the ring R is not Noetherian. Prove that the ring R is not Noetherian. Prove that the ring R is not Noetherian. 5 . Let RE Q` be the subring consisting of polynomials } = dot a12t . .. + and`" such that do EI . Given a subgroup A in O ( viewed as an abelian group via addition ) , consider the
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The weights of all the boxes of corn flakes filled by a machine with a weight of 15.5 ounces and a standard deviation of 0.4ounce What percent of the boxes will have the following weights A Less than 15 ounces B between 14.5 ounces and 16.5 ounces

Perform the indicated operations. 2 cubed times 4 minus left parenthesis 50 divided by 10 right parenthesis

You travel a toll road that requires a 75-cent token. If you buy a specialcar-pool sticker for $6.00, then the tokens cost only 65 cents and you can use the express lane. At what point is thecar-pool plancheaper?

Cr: . You ip a coin three times. Determine the probability that (i) all are heads; (ii) all are the same (either H or T); (iii) the second ip comes up heads; (iv) at least one is a tail. Suppose that you know at least two ips are heads; repeat parts (i) to (iv) conditioned on this knowledge. Are the events \"at least two heads\" and \"all ips are
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Let T= x1 + x2 + ... + x32 be the sum of a random sample of size 32 from a distribution whose pdf is fx(x) = 1-(x/2), 0 < x < 2 and S = Y1 + Y2 + .... + Y40 be the sum of a random sample of size 40 from a distribution whose pdf is fy(y) = (3/y^4), y > 1. Let W = 3T - S. Use the central limit theorem to approximate P(-1

1.The following data are interval level. 34, 37, 77, 98, 52, 51,88, 49, 45, 45, 90, 15, 44, 47, 47 a.Convert these data to an ordinal level scale. b.Then explain what is gained and what is lost by converting these data from interval to ordinal level. 2.Students earned the following set of scores on a test. 98, 24, 16,46,85, 26,34,66, 30,36,42,92,

6. We draw a random sample of size 50 from a population with standard deviation 2.5. If the sample mean is 15, what is a 90% confidence interval for the population mean? 7. A sample of 1,400 American households was asked if they planned to buy a new car next year. Of the respondents, 34% indicated they planned to buy a new car next year. Construct

Please help me answer this question Suppose a car dealership offers a low interest rate and a longer payoff period to customers ora high interest rate and a shorter payoff period to customers, and most customers choose the low interest rate and longer payoff period. Does that mean that most customers want a lower interest rate? 0 YES: Regardless
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How do I find if it is possible to obtain a feasible solution in an LP with multiple feasible regions? If it is possible on the graph, where would the solution be? \f
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O WHOLE NUMBERS Division involving zero Evaluate each expression below. Click on "Undefined" as needed. 0 = 9 = Undefined X U WO =
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Suppose that you have a score of X=75 on an exam with =80. Which standard deviation would you give you a better grade relatively speaking: =2 or =10.Be sure to show all formulas with symbols (and plug in numbers), steps, processes andcalculationsfor all parts of the answers below.Also, explain your answer in words.

Question regarding testing hypotheses about multinomial data: 5. Is this data Binomial? In this problem you will learn to test hypotheses about multinomial data that is, data where each observation falls into one of several categories. In the book, this material is primarily in section 9.5 (but all the information you need is contained in the
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The manager of a theater wants to know whether the majority of the attendees are adults or children. One day 51,000 were sold and the receipts totaled $27,324. The adult admission is $6.50 and The children's admission is $4.50. How many adults attended

LIST OUT ALL THE OPTIONS CORRESPONDS TO ITS LINE SO ITs EASY TO FOLLOW eg line 4 line 6 Theorem: A square matrix A is invertible if and only if det ( A) # 0. 1. Let A be an n x n matrix and let R be the reduced row echelon form of A. 2. We will show first that det( A) / 0 if and only if det (R) # 0. 3. Let El, E2, . .., Er be the elementary
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Determine whether the sequence is arithmetic, geometric, or neither. If the sequence is arithmetic, give its common difference d. If the sequence is geometric, give its common ratio r. -1, - - 4, - 2 -7,... Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The sequence is arithmetic with a
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Between linear and exponential functions, which one has the most rapid change in values? Give examples to support your

In this chapter, you learned how to describe natural places and the environment. Choose the correct option to complete each statement. 1. El ro, la cascada y _____ son cuerpos de agua. la palmera el cielo el mar el valle 2. En el bosque muchos animales viven en ______. los rboles las cataratas las nubes los llanos 3. En la playa me siento en _____

If A and B ,are independent events, then P ( A ) = P ( B|A ). A) True B) False I know the answer is B but if you could please explain why :)

8. How many arrangements exist for any 3 cards in a standard deck of 52 cards? (a) 523 (b) 156 (c) P(26,3) (d) P(52,3) (e) none of these 9. How many arrangements exist for any 13 red cards in a standard deck of 52 cards? (a) P(26,13) (b) P(52,13) (c) P(52,26) (d) 13! (e) none of these 10. How many possible arrangements exist for the word
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1. The daily demand for gasoline in a metropolitan area is best modeled according to the Triangular distribution between 1.85 million and 2.97 million gallons, and with a peak (mode) of 2.68 million gallons. The city receives 2.85 million gallons of gasoline on daily basis; however possible shortages on some days during the year may force the city
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26. Show that (p - q) A (p - r) and p - (q Ar) are logi- cally equivalent.Each of Exercises 20-32 asks you to show that two compound propositions are logically equivalent. To do this, either show that both sides are true, or that both sides are false, for ex- actly the same combinations of truth values of the proposi- tional variables in these
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If I have the range, sample variance, and standard deviation of two sets of data, how do I determine which is more variable?

Can someone please help with these two problems. ONLY HELP WITH QUESTIONS 6 AND 10. THAT IS ALL Name each shape below based on its markings as precisely as you can. Don't assume that the shape is drawn to scale. Explain your reasoning. 5. 6.\f
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Three solutions of a second order non-homogeneous linear ODE are: 91{$)=1+ 3x2: 92%} = 1 + 38x21 and tel\") 2(1+ New: 1- Find the general solution of the ODE
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Plwase solve it on paper instead type in with proper steps thanks! \f
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A feed company is d eveloping a feed supplement from two grains A and B. Each kilogram of A contains 0.3 grams of protein and 0.2 grams of carbohydrates; each kilogram of B contains 0.9 grams of protein and 0.1 grams of carbohydrates. There must be at least 27 grams of protei n and at 1 east 8 grams of carbohydrates. E ach kilogram of A costs 30
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Please help me solve the problem below. Please explain step by step so that I can learn. Thank you \f
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A new Youth Activity Center YouthActivityCenter is being built in Pagosa Springs. The perimeter of the rectangular playing field is 396 yards. The length of the field is 22 yards less than quadruple the width. What are the dimensions of the playing field?

A logistics company is interested in maximizing its weekly profits. A total of 160 hours of labor are available each week at $15/hour. Additional labor can be purchased at $25/hour. Capital (trucks) can be leased (in unlimited quantities) at a cost of $5/hour. If K units of capital and L units of labor are available during a week, then the
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can you ezplain these? 15 Which function has the smallest y Intercept EX 4 16 Which domain would be the most appropriate to use for a function hat compares the number of emails sent (a) to the amount of data used for a cell phone plan (y)? (1) integers rational numbers 2) whole numbers 1 irrational numbers
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The trace of a square matrix A is the sum of the entries along the main diagonal and is denoted as tr A Prove that if A is diagonalizable then tr A equals the sum of the eigenvalues of A

The squares of two numbers add up to 1,156. The second number is the square root of three times the square of the first number. What are the numbers?

\fEvaluate the following functions for the given input. Write your answers in function notation and as ordered pairs. f (:13) = 4331 for it: = Find the solution to each of the following equations to 5 decimal places. a.7y=14 \fRewrite the following expressions to eliminate the product, quotient or power: logy (Ab'z) \fSolve each of the following
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11 \f
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Cul(es) de las hiptesis recientes sobre la adquisicin de segundas lenguas mejor describe(n) el/los proceso(s) de adquisicin de una L2? Por qu

The question is as follows. The excel sheet is also added below. We are studying mutual bond funds for the purpose of investing In several funds. For this pa rtlcular study, we want to focus on the assets of a fund and Its five-year performance. The question is: Can the vevyear rate of return be estimated based on the assets of the fund? Nine
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Fractions and mixed numbers are often used in our everyday lives. For example, today I ran 3 1/2 miles. Provide a real-life example in which you would need to add, subtract, multiply, or divide fractions or mixed numbers. Include the following: An expression representing your given scenario Adding, subtracting, multiplying, or dividing fractions A

Graph the following equations using the slope-intercept method. Draw the y-intercept in yellow. Draw at least one additional point in red using the slope. 7. y = 3/4x - 1 \f
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question 2 2. (Fourier Series) Piecewise continuous bounded functions can also be expressed as Fourier Series. Let for a
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Klein et. al (2011) conducted a study to determine the long-term effect of Vitamin E and the selenium risk on prostrate cancer in relatively healthy men. The observed frequencies are provided below. Using a 0.05 significance level, you need to test the claim that there is a significant association between supplement and prostate cancer. Table

If something is adjacent, it is what? Question 14 options: thrown/lain toward placed beside given to

Find the real solutions, if any, of the equation. Use the quadratic formula. 8x - x + 1=0 . . . - 1- 133 - 1+ 133 O A. 16 16 -1- 133 1 + 1/33 O B. 16 16 -1+ 133 1+133 O c. 16 16 O D. no real solution
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d First, solve the initial value problem: 7em_y, y(O) ln(7). Evaluate your solution at z 5 and round your solution to two decimal places. d - First, solve the initial value problem d_y 22:\\/9 3/2, y(O) (0 with I |y|
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Use the savings plan formula to answer the following question. You put $200 per month in an investment plan that pays an APR of 6.5%. How much money will you have after 25 years? Compare this amount to the total deposits made over the time period.

Please assist finding the equation from the following word problem? A student must leave for campus in 10 mins or he will be late for class. Unfortunately, he is snowed in. He can shovel the driveway in 16 mins, his brother claims to be able to do it in 14 mins. If they shovel together, how long will it take to clear the driveway? WIll this give

Question Graph the equation y = -4x by plotting points. To plot points, click on a point on the graph and drag it to the desired loca Provide your answer below: -5 - 5 -5
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24,27,30,32 '101 OUST gettoo onT 12. 17, 7, -3, . . . ; 1000 13. t = 5, t3 - 20; t12 lum bnis & Hiw here 14. t2 = 7, t4 = 8; t1 15. ts = 24, to = 40; t1 16. to = 60, t12 = 48; t40 17. t7 = -19, t10 = -28; t21 18. to = 41, t15 = 61; t3 Find the arithmetic mean of each pair of numbers. 19. -3, 7 20. 2.3, 9.1 21. 5, 3 22. - V2, 3V/2 Insert (a) two,
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Charlie makes $2,560 is her net income per month and puts 10% into her savings which is $256 does she make enough to met all her expenses and why will she need an emergency funds. She also wants to save $100 per month for a vacation she is going to take in 10 months and also wants to save $250 for the next two months for Christmas. What options
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I'm stuck in this question, I need help. A customer visiting the suit department of a certain store will purchase a suit with probability 0.22, a shirt with probability 0.30, and a tile with probability 0.28. The customer will purchase both a suit and a shirt with probability 0.11, both a suit and a tie with probability 0.14, and both a shirt and

A bag contains a total of 45 markers, of which 15 are pink. If you select 2 marker at random without replacement , determine the probability that neither is pink. Give your answer as a decimal rounded to the thousandths place.

AutoSave (@ Off) FOOD-TRUCK-RAW-DATA_Home_work_HS.xisx Search Sign in File Home Insert Page Layout Formulas Review View Help 1& Share Comments C14 X -SUMPRODUCT($B$5:$B$13,C5:C13) DE F G M Formula Bar P S T U Hamilton Festival Weekend No Festival Burger cost Weekday 66.9183436 10 Weekday 5 Intercept 9 Weekend 10 1 19 1 9 10 6 6 Probability of
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In basic mathematical skills, boys tend to do better on Group of answer choices mathematical word problems and memory for spatial configuration. problems requiring algebraic solutions or short-answer responses. tests of verbal fluency. mathematical computation

Visit the retail store,www.staples.comandsearch forDVD + RW media.Select enough of the DVD+RW media to equal an amount over $45.00 to qualify for free shipping. How much did you save on the shipping? What is your discount percent when you receive free shipping on your order? Why doonlinemerchantsrequire acertain dollar purchase before giving free

A school counselor wants to look at the weekly use of marijuana and its impact on students' GPA. She performs a linear correlation which results in a Pearson r of -0.7 and a p-value of 0.06. State (ii) her null hypothesis and how you arrived your conclusion. A Question 6 (2 points) 40 Listen A school counselor wants to look at the weekly use of
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c. Algebraically determine the coordinates of any points of intersection between the two functions. State all answers as exact values. Hint: Use the quadratic formula. (2 marks) d. Not all points of intersection are invariant points. Explain how you know for certain that the points of intersection for this question are invariant points. Video
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According to a recentsurvey, the average daily rate for a luxury hotel is $ 232.64 . Assume the daily rate follows a normal probability distribution with a standard deviation of $ 22.89 . Complete parts a through d below c. What is the probability that a randomly selected luxuryhotel's daily rate will be between $227 and $ 247? d. The managers of

To investigate force standards and cause and effect, get two identical rubber bands. Hang one rubber band vertically on a hook. Find a small household item that could be attached to the rubber band using a paper clip, and use this item as a weight to investigate the stretch of the rubber band. Measure the amount of stretch produced in the rubber

17. An aerospace company has submitted bids on two separate federal government defense contracts. The company president believes that there is a 40% probability of winning the first con- tract. If they win the first contract, the probability of winning the second is 65%. However, if they lose the first contract, the president thinks that the
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Form each sum by combining the two addends into one lump. Make exchanges as necessary so that the sum is represented by the least number of coins or bills. AABCCDDD + AAABBBBBBBBBC = AAACCCCCCCCEEE + AABBCCCCCCC = AAAAAAAEEEEE + AAAAAAEEEEE =

Which numbers are constructible? why? Select each of the constructible numbers listed below. Select all that apply: O a. 1.23456 O b. 5TP O C. 41/3 O d. 81/12 e. (2+V/17) 3/8
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Problem 1 Determine the optimum solution for each of the following LPs by enumeratiog all the basic solutions. (a) Maximize z - 2x1 4x2 + 5x3 6x4 subject to X1 + 4x2 - 2x3 + 8x4 = 2 -X1 + 2x2 + 3x3 + 4x4 = 1 X1, X2, X3, X4 = 0 (b) Minimize z = x1 + 2x2 - 3x3 - 2x4 subject to x1 + 2x2 - 3x3 + X4 - 4 x1 + 2x2 + x3 + 2x4 = 4 X1, X2, X3, X4 = 0
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Determine whether each improper integral converges or diverges and the value of the each that converges. \f\f\f
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What is the area of an equilateral triangle where the length of a side is 5cm

If the probability that a randomly chosen college student takes statistics is0.40 , then what is the probability that a randomly chosen college student does not take statistics? Give your answer as a decimal.

Find the equations of any vertical asymptotes for the function below. x2 - 3x - 10 f(x ) = x2 -5x - 14 Determine the equation of any vertical asymptotes. Select the correct choice below and, if necessary, fill in the answer box within your choice. O A. The vertical asymptote(s) is/are x = (Simplify your answer. Use a comma to separate answers as
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Problem You deposit $50 per week into a savings account that pays 4% interest. Calculate the balance of your account after 25 years. Problem You decide to purchase a car. You agree to pay $325/month for 5 years at an annual rate of 3.5%. Calculate boththe price of the car and the total interest you will pay. Problem Heinz takes out a $50,000 home

If fibroblasts form a confluent monolayer in a petri dish they are transformed. Group of answer choices True False

I need help to solve problem below. Please if you can write explanation will be very helpful. Problem No. 4.8 / 10 pts. 4 VI = -5 7 Give a geometric description (graphically or in your own words) of Span(v1, V2, V3)? Show all your work, do not skip steps. Displaying only the final answer is not enough to get credit
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7.3 THE BIRTHDAY PARADOX It is often the case that we can gauge how likely an event is by simply thinking of our past experiences and comparing it to other events in our daily lives. For instance, most people would agree that the probability of buying one lottery ticket and winning the jackpot is much lower than the probability of rolling one die
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Let f(x)=9(6)^x2. Evaluate f(5) without using a calculator. f(5)=__

Letf ( x ) = 2 x 2 f(x)=2x-2 andg ( x ) = x 2 2 x + 2 g(x)=x2-2x+2 . Then ( f g ) ( x ) = (fg)(x)= , ( g f ) ( x )

The table below contains the overall miles per gallon(MPG) of a type of vehicle. Complete parts a and b below. Construct a 99 % confidence interval estimate for the population mean MPG for this type ofvehicle, assuming a normal distribution. 28, 33, 29, 28, 27, 24, 24, 29, 31, 22, 41, 33, 28, 35 a) The 99% confidence interval estimate is from __

where h= 093 2 45 3 2 be the column of the matrix A 3 BE 9 where h= 093 . 2 6 93 O 2 2 S 93 non- trial solution for the above given number if exists then write the solution in Parametric Solution . Homogenous or non Homogenous . Check whether the Column of matrix A generate RS, 7
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Express each measurement as directed. Measurement Expressed to Expressed to 2 Significant Digits 2 Decimal Places using regular notation 0.32820 g (a) (b) 187.5 ng/mL (c) (d) 0.0301 lbs (e) (f ) 300.0 s (h) 70700 gallons (i) (i) 6.0487 m (k) (1)

You are reading a research report that has a null hypothesis that the percent of disease present in the independent Treatment and Control groups of an experiment is the same and an alternative that the present rates are different. Based on the data table below, the researcher reports a test statistic for a chi-square test of 2 = 3.672 and a

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