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Mathematics Questions and Answers July 14, 2021

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Seccion 7. a) Convierte a funcion las siguientes expresiones algebraicas. b) Utiliza el Teorema del Valor Intermedio de funciones polinomiales para probar si existe al menos un valor de x que sea un cero de la funcion entre los puntos a y b. Evaluator 4 decimales c) Descrine su comportamiento final en terminos de su grado. d) Dibuja su grafica en
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Find the Cosine of the acute angle. cos A = ? Show instructions Question 9 (8 points) Find the Cosine of the acute angle. cos A = ? A 5 4 C W O a O O c O d me left for this
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Suppose it costs Apple about: \f
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I need help solving the problem below: passing through (-8,3) and paralell to the line whose equation is 9x-5y-6=0

Dr. Herrera conducted a study in which they compared academic motivation among high school students who either had at least three hours of daily screen time or did not have at least three hours of daily screen time. The average scores used for academic motivation were reliable for both groups, and the difference between the two groups was

5.10.2 Practice: Purchasing and Credit Practice Q Mathematics of Personal Finance Sem 1 Name: Austin Coleman Points Possible: 20 Date: 1. Clare lives in lowa and pays 6% in sales tax. She just bought $135 in groceries, but $40 worth of those groceries were not taxable. What is the total amount that Clare paid for the groceries, including sales

A random sample of 1800 movie goers in Flagstaff found 1296 movie goers who had bought popcorn on their last visit. Find a 95% confidence interval for the true percent of movie goers in Flagstaff who have bought popcorn on their last visit.Express your results to the nearest hundredth of a percent.

find the indicated measure in ABCD. Explain your reasoning \f
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Let v = 1 1 3 , w = 3 1 1 , and let V = span( v , w ) (a) Find an orthogonal basis U = { u 1 , u 2 , u 3 } of R^3 such that span( u 1 , u 2 , u 3 )=V (b) Find the U-matrix of the orthogonal projection onto V . (c) Find the U -matrix of the reflection through the plane V . (d) Find the U-matrix of the 180 rotation of R^3 about the axis Span( u 3 )

3. Matrix multiplication. (a) Consider the following matrices. 1 0 -2 2 O 6 10 A = B = 4 3 C = -3 -1 , D = 1 -1 4 8 5 2 O 1 4 Perform the indicated operations, if defined; or explain why it is undefined. i. AB, ii. BA, iii. BC, iv. CD, v. DC, vi. DA. (b) Suppose that A and B are nonsquare matrices. Under what conditions are both AB and BA defined?
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(a) Find the area. (Round your answer to two decimal places.) cm 2 (b) Find the volume. (Round your answer to two decimal places.) cm 3 (c) Find the volume. (Round your answer to two decimal places.) cm 3

The solid contains a cone and a hemisphere. Find the volume of the composite solid. (Round your answer to two decimal places.) in 3 10in

Find the equation of the line that contains the given point and with the given slope Write the equation in slope-intercept form, if possible, and graph the line. (0,8), slope = - 3 Choose the correct answer below and fill in the answer box within your choice (Simplify your answer. Use integers or fractions for any numbers in the equation. ) O A.
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Show Exam A quadratic function y = f (x ) is plotted on a graph and the vertex of the resulting parabola is (4, 5). What is the vertex of the function defined as g(a) = -f(2+ 2)
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QUESTION #1 In a study to determine the effect of early child care on Infantmother attachment patterns, 96 Infants were classified as either "secure" or "anxious" using an appropriate measurement scale. In addition, the Infants were classified according to the average number of hours per week that they spent In child care. The data are presented
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Q.No.3. (Marks 04) Consider the following linear system which has the exact solution. X = 1, X2, X3 T X 1, 1, 13.3330x, + 15.920x2 - 10.333x2 = 15.913 2.2220x, +16.710x, + 9.6120x3 = 28.544 1.5611x, + 5.1791x2 + 1.6852x3 = 8.4254
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You are dealt a randomly chosen 6 card hand from a standard playing deck. The score S for a hand is 5 times the number of kings minus 3 times the number of clubs. What is the expected value of S? E[S) = Ex: 1.23
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The cost of producing x units of a product is modeled by the following. C =140+45 x 150ln( x ), x 1 (a) Find the average cost functionC. (b) Find the minimum average cost analytically. Use a graphing utility to confirm your result. (Round your answer to two decimal places.) (b) Find the minimum average cost analytically. Use a graphing utility to

how to find implicit partial derivatives z/x and z/y of the function : y + z = 4x

For a Student's t-distribution with mean 0, standard deviation 1, and degrees of freedom 30, which of the following Python lines outputs the probability \f
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2 points Suppose that X and Y are identical and independent Exponential random variables, each with an expected value of 6 (or equivalently, with a rate of 1/6). Let Z = 2X - Y. What is the value of the standard deviation of Z rounded to the nearest tenth? 10.4 13.4 6.0 18 28.8 Previous
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2.Ten thousand users of an e-commerce web site were randomly allocated over a one-day period to see if a new version of the website(l3) would lead to increased sales compared to the existing version of the web page {A}.The data is in the file ABtestcsV. The column labelled page indicates which website the user viewed and the column labelled saies
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How can you simplify this equation? V24 - 8+ 32 Simplify (6) (2) - 16
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Topic: function composition, inverses, root functions 21. Solve by sketching a graph: Vz - 2
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12 1 point In the figure, k || { || m || n. If AB = 4, AC = 10, and EF = 6, then find EG. k A4 E B F C G m D H n 15 18 6 20 7 14 8 Previous O be here to search
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O POLYNOMIAL AND RATIONAL FUNCTIONS Mercede Word problem involving the maximum or minimum of a quadrati. 1/5 A vehicle factory manufactures cars. The unit cost C (the cost in dollars to make each car) depends on the number of cars made. If x cars are made, then the unit cost is given by the function C (x)=0.4x -64x+ 10,402. How many cars must be
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Instructions: 1. Carefully analyze the situations presented in each of the word problems. 2. Solve each word problem in such a way that you can show: the whole procedure in an organized way, so that you can obtain a complete or partial score, the formulas you used, a diagram with the data, and the use of the correct units depending on the

Consider the following data set to answer all of Question 1. 3, 0, 6, 4, 1 1, 1, 2, 2, 2 3, 2, 0, 1, 0 1, 2, 1, 1, 0 Part A Construct the frequency distribution for this data by filling out the following table. Comment on the modality and skewness of this data set. (5 marks) Observation Value Frequency Relative Frequency (%) Cumulative Frequency

How do I do this? HW: Writing Linear Equations (Given a Point & Slope) NAME: 1) Write slope-intercept form equations for the lines described below. Then use the graph to see if you're right! a) Slope of - 4. Through (-1, 5). b ) Slope of - Through ( 4 , - 2 ) . LO c) Slope of 1. Through (5, 3). d) Slope of -. Through (4, - 3)
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Please see attached The following hypothesis test is run, where Ho: p = 0.2 Ha: p 0.2 p =0.25 and n = 60. Calculate the P-value. Show work. Need to express what you are calculating using function notation. (round probability to four decimal places as needed) BIUSI Xz X Insert Formula Ho : p = 0.2 Ha : p * 0.21 p = 0.25 n = 60
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using the postulate, tell which parts of the pair of triangles should be shown congruent. an example is shown below. TASK. Using the given postulate, tell which parts of the pair of triangles should be shown congruent. Use the answer sheet on page 112 in answering 1. SAS 2. ASA 3. SSS B D E D 112 1R H12 I12 IR IR 4. ASA 5. SSS 6. ASA P D R B O R S
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Problem 47. Let f: [a, b] -> R be differentiable, 0
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Research coming out of the Developmental Labs, Inc., of Huntington, New York, established that reading skill was positively correlated with smooth movements of the eyes during reading (i.e., fewer pauses and fewer retracks). A friend suggests that the local school district invest money in equipment that teachers could use to help students develop

Consider the graph below. 3 -5 -3 2 3 Please state the domain and range in interval notation. Domain: Range: Does this graph represent y as a function of x? Ono O yes

10.) Someone claims that the estimate of the standard error is 0. Explain what would have to be true for this to be the case
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Account A pays continuously compounded interest with constant force of interest delta. Account B pays continuously compounded interest with constant force of interest 2 * delta. By the time an initial investment in Account A has doubled, the same initial investment in account B will have quadrupled. Select one: 0 True 0 False
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Suppose that motorists in the southeastern United states us a mean of 8.20 gallons of gasoline per week with a standard deviation of 0.47 gallons. Assume that gasoline consumption levels are approximately normally distributed. a. What percentage of southeastern drivers use more than 8.75 gallons of gasoline per week? b. What percentage of
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5. Using the Principle of Mathematical Induction, prove that for every natural number n E N, it follows that 2302 = 2n+1 1
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https://docs.google.com/spreadsheets/d/18pubMDUiO4Nvz9k0MHm7P4yt_4g3PXay3Ojlgr51i9k/edit?usp=sharing a)(2 points) Is there sufficient evidence that the overall model is useful for predicting the operating costs per revenue ton-mile? Test using ? = 0 . 01. b)(2 points) Test the hypothesis that the operating costs per revenue ton-mile decreases as
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Question 2 If a taxpayer has taxable income of $43,000, the Low-Income Tax Offset (LITO) and the Low and Medium Income Tax Offset (LMITO) available would be: a) $425.00 for LITO; $630.00 for LMITO ) $425.00 for LITO; $705.00 for LMITO ( ) $475.00 for LITO; $705.00 for LMITO $475.00 for LITO; $630.00 for LMITO
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please explain thoroughly, I want to understand it. f (z) is an entire analytic function with derivatives f', f" etc., antiderivatives F(z), etc. Below, I is the unit circle | z| = 1 while a and 3 are complex numbers whose various natures will be specified in each part. In each case, you are to compute f (z ) IT (z - a)(z-B) dz expressing your
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ID Name: In the figure, PA and PB are tangent to circle O and PD bisects ZBPA. The figure is not drawn to scale 53. For mZAOC = 46, find m/POB 54. For mZAOC - 50, find m/BPO 55. A chain fits tightly around two gears as shown. The distance between the centers of the gears is 20 inches The radius of the larger gear is 1 1 inches. Find the radius of
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For EXTRA. CREDIT, begin a stock-price log with your \"nigger" points noted at the top. Record the price of each of your stocks and calculate the actual spread daily. If either of your trigger spreads is reached, hypothetically put on the indicated trade. That is, note on your sheet: \"bought 10D Home Depot at {price'j and "sold l-I} Lowes at
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2. (a) Prove the Identity Law for sets with a membership table. (b) Prove the Involution Law for sets using basic definitions
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1. State the hypothesis and conclusion of the following statement. If two lines are cut by a transversal so that two corresponding angles are supplementary, then these lines are parallel. Hypothesis: Conclusion: Is the statement true? 2. Answer the question and show an example for each property using angles
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Molly has a credit limit of $9,500 on her credit card. She had a previous balance of $1,203.34 and made a $250 payment. The total of her purchases is $1,023.47. What is her available credit

Statistic and its applications question Consider a population of 1024 mutual funds that primarily invest in large companies. Let x be the one-year total percentage return achieved by all the funds. Giventhat x = 8396.8and x!= 76597.76. AccordingtoChebyshev'stheorem,atleast 93.75% of these funds are expected to have one-year total returns between

When 4.870 10-3 is correctly converted to its standard form the number becomes ________. Multiple Choice 4870 4870. 0.00487 0.004870 0.0004870

A drawer contains four pairs of socks, with each pair a different color. One sock at a time is randomly drawn from the drawer until a matching pair is obtained. Calculate the probability that the maximum number of draws is required the correct answer is = 0.2286 but can you explain it

1.What were the correlations between the concepts you are using (see below) Were any significant?(please answer this question) There is a negative correlation between authoritative parenting and self-esteem which is -.194. There is a positive correlation between authoritarian parenting and self-esteem which is .144. 2.What was the effect size (r 2

PLANE GEOMETRY (Do NOT answer the same set of questions. There are other sets of questions I posted. Answer those. Please.) Analyze and solve for unknowns in every problem given. Submit the scanned copy of your solutions. Digital solutions are highly encourage . If written solutions, use a black ballpen (if available) and white bond paper.

Prove the Angle Sum Theorem for asymptotic triangles. Corollary 6.5.3 (Angle Sum Theorem). If DPAB is an asymptotic triangle, then (

Please answer all parts 6. Let R be a ring with identity 1. Define a new operation on R by nobmath- ab for all a, be R. (a) Show that the operation o is associative. (b) Show that there is an element e E R such that noczeoama for allaER. (Hint: first try writing out the "multiplication table" for the o operation in a small ring like Za.) (c) Show
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& 2 4) Find the LU-decomposition of the matrix [4 3 2]. 819 5) Give the area of a parallelogram with vertices at (3,1), (2,9), (7,11), and (8,3)
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What is the Center Line of Control chart? Round your answer to three decimal places. What is the Upper Control Limit? Round your answer to three decimal places. What is the Lower Control Limit? Round your answer to three decimal places. Question 2 - of 15 Step 1 of 7 01:01:49 To determine if their 12 oz filling machine is properly adjusted,
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Develop three months of daily,Ir price history from an Internet source (Yahoo, perhaps). Set up an excel worksheet. Put \"date\" in the A1 cell, the higher priced stock {\"Lowes\" for example) in the El cell and the lower priced stock (perhaps "Home Depot\") in the C1 cell. (Elf course, use stocks that you pick.) Cut and paste the dates in the
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1. Systems of linear equations. (a) For each of the following systems of linear equations, (1) solve it by putting the matrix in reduced row echelon form; (ii) for each of the consistent systems, identify the basic and free variables; (iii) determine the rank of the coefcient matrix. i. m+y+22=8 mZy+3z:1 3x7y+4z=10 x+2y+3z=1 y+2z=1 2x+y=5 iii.
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To make a mixture of nuts (3 lbs), 1 1b. of cashews is mixed with every 2 1b. of peanuts. In order to make 63 pounds of this mixture, how many pounds of peanuts are needed? Select one: O a. 42 1b 63 1b C. 12 1b d. 21 1b
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2. Use the graphs to determine the required intervals for the following inequalities. a ) f(x) > 0 b) g(x) 50 for x Ef 0, 27 -24 -2 -2 21 12
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Determine each feature of the graph of the given function. 2 2 - 5x f ( 20 ) = 2ac2 Answer Attempt 1 out of 2 Horizontal Asymptote: y = No horizontal asymptote Vertical Asymptote: x = No vertical asymptote x-Intercept: , 0) No x-intercept y-Intercept: (0, No y-intercept Hole: No hole
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a. Consider the 2 following complex numbers in rectangular form: Z1 = 5- 2j 2 = -3+3j i. Construct an Argand diagram that represents z, and zz ii. Find z1 + Z2 iii. . Find z2 - 21 iv. Find z1 X 22 Task 2 v. Find 2 2 b. Consider the 2 following complex numbers in rectangular form: Z3 = 7 + 5j Z4 = 10 - 8j i. Convert Z3 and z4 to polar form ii.
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A business sells knickknacks. Over the course of a few years, they gave discovered there is a relationship, seen below, between profit and the cost of the knickknacks. If x= the price of the knickknack and y= profit, what is the maximum profit and the price of the knickknack that gives the maximum profit? y=-3x^2+240x-1125

Using a random number table to make a A lottery director wanted to fairly choose four winners from a group of 41 participants. He assigned each participant a two-digit number from 01 to 41. (Let's consider "01", "02", etc. to be two-digit numbers.) He then selected the following line from a random number table. 11548 55865 07304 47090 23637 57011
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A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 36.93. Random sampling of 93 scores obtained from individuals who were bullied yielded a mean of

Please please help me through these questions. These might look simple but I am confused about whether these are independent distributions. What does it mean by saying two RVs have the same distribution? (13) Let X and Y have the same distribution Poisson (1). Does X + Y follow a Poisson distribution? Explain why. (14) Let X ~ N(0, 1) and Y ~ N(0,
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P(1,1,1) is a coordinate in R 3 and is a straight line passing through the point P 0 (1,0,-1) and of vectordirector \f\f\f
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A machine that is programmed to package 1.60 pounds of cereal is being tested for its accuracy in a sample of 40 cereal boxes, the sample mean filling weight is calculated as 1.62 pounds. The population standard deviation is known to be 0.06 pounds. Find the 95% confidence interval for the population mean filling weight.

A young executive is going to purchase a vacation property for investment purposes. She needs to borrow $78,000.00 for 30 years at 5.4% compounded monthly, and will make monthly payments of $437.99. If needed, round to 2 decimal places. a) What is the unpaid balance after 14 months? $Correct b) During this time period, how much interest did she

According to records, the amount of precipitation in a certain city on a November day has a mean of0.10inches, with a standard deviation of 0.07 inches. What is the probability that the mean daily precipitation will be 0.095 inches or less for a random sample of40 November days (taken over many years)

How does a fuel gauge in a car determine the quantity of petrol/gasoline remaining in the tank?

A company makes smart telephones at facilities in Waterloo (Canada), Cambridge England), and Mumbai (India). These plants can make 1200, 900, and 2400 telephones per week beyond the demand in the "local" markets of Canada/USA, Europe, and Western Asia respectively. All three plants can ship to markets elsewhere: Latin America, Africa, and Eastern

Hi, I need help with solving part b of this problem and making sure I did part a right. I attached the problem and my solution. Thank you! " ) P ( D 7 100 ) b 3 a ) x -7 Mom's height in S.U. Y -7 Daughter's height in S.U. Y= P X + VI - p2 2 ; p = 0.5 Y E (DIX = X ) = px = 0.5x var ( Y 1 X = x ) = var ( p x + VI -p2 z / x = x ) = var ( px + VI-p2,
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8) Run a multiple regression (in Excel) with body fat as the dependent variable and skinfold, midarm and thigh as independent variables. Show the results. Comment on the predictive value of the results. (Chapter 13)
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(8) Let A; = {n EZ| - i
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Subject:Math \f
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Please help me solve this and show work i don't understand this one S T P Q R If mySQR = 52, find mQTS
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Q1 Four guys ordered four custom burgers at a restaurant that has specific prices per topping. The bun and patty cost $2.44. - Mike's burger cost $8.44 and had 2 avocados, 5 bacon strips, and 3 cheese slices. - Gina's burger cost $7.53 and had 3 avocados, 4 cheese slices, and 2 dill pickles. - Tim's burger cost $6.89 and had 2 bacon strips, one
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For the following questions, use 22, 24, 20, 18, 19, 18, 22, 25, 21. Round any decimal numbers to the hundredths place. Find the mean. Show your work below: The mean, also known as the average, is calculated by adding up all the numbers in a set and then dividing by the count of numbers in that set. Here are the steps to find the mean of the given

The data in this spreadsheet contains the following Variables: School Name: The name of the school State: The State where the school is located Graduation Rate: percentage of students who graduate within 150% of the intended time to competion for a degree (6 years or less for a 4 year degree) Avg Faculty Salary: Average salary for facutly at the
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A random sample of 40 college professors is selected from all professors at a university. The following list gives their ages. 66,46,40,48,36,58,46,47,46,23,58,69,50,45,64, 64,58,47,57,28,33,62,47,46,31,33,41,39,21,45, 62,30,35,49,22,37,44,31,36,50. Construct a stem-and-leaf plot for the data. Complete parts a. and b. a. Determine the leaves for

Please zoom in and help me solve these. I need it for my study guide. I really appreciate your help :) #3 The graph of a sinusoidal function is shown. Describe this graph by determining its Equations of Sinusoidal Functions #1 y = a - sin (bx + c) +d a represents: b represents: ONA represents: Equation of its midline: 120 240 360'480'600 720" d
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Levin Furniture buys a living room set with a $5,300 list price and a 5096 trade discount Freight {FOB shipping point) of $45 is not part of the list price. What is the delivered price (Including freight} of the living room set, assuming a cash discount of 2110, nll30, ROG? The invoice had an April 8 date. Levin received the goods on April 19 and
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A population of 20 deer are introduced into a wildlife sanctuary. It is estimated that the sanctuary can sustain up to 700 deer. Absent constraints, the population would grow by 40% per year. Estimate the population after two years

Find the center and radius of the circle open parentheses x minus 3 close parentheses squared plus open parentheses y plus 5 close parentheses squared equals 25 . Center equals open parentheses negative 3 comma space 5 close parentheses and radius equals 25 Center equals open parentheses 3 comma negative 5 close parentheses and radius equals 25

.Graph the solution set for the linear inequality 3y - 6x < -3

The Recommended Daily Value of phosphorus is 800 mg. How many grams of phosphorus are recommended? 2. The height of a student is 175 cm. How tall is the student in meters? And in inches? 3. A glass of orange juice contains 0.85 dL of juice. How many milliliters of orange juice is that

Unit 3: Rational Functions References for the questions: Unit 3.1; Reciprocal of a linear function in the form f(x)= 1/kx-c Unit 3.2; Reciprocal of a quadratic function Unit 3.3; Rational functions of the form f(x)= ax+b/cx+d Use and state the key features (Vertical Asymptote, Horizontal Asymptote, X-Intercept, Y-intercept) and graph the

question help! \fWhat is the coefficient of variation for the research and design (R&D) area?Which area of the rm has more variability? 0 research and design area 0 marketing area As the manager of the human resources department at your rm, you are investigating the number of sick days employees took during the last calendar year. For employees in
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Conduct research regarding a SEC investigation of Apple backdating its stock options and the deposition of Steve Jobs. Summarize in your own words the results of that disposition. Did anyone at Apple get into trouble with the SEC in regards to the backdating of the stock options? If so, who and why
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wing information to answer the next question 66x10 y2 + 55x y3 + 88xTy The greatest common factor of the above expression can be represented in this format axby, where a is the coefficient, b is the exponent on x, and c is the exponent on y. Numeric Response 5. The Greatest Common Factor of the polynomial expression can be written in this form:
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Many mathematical concepts and techniques have been developed independently by different cultures throughout history, demonstrating the universality of mathematical ideas. note for tutors: do this in step by step explanations I already have the answers I need the explanations and the answers from you if you make a mistake I will give a bad rate
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Because colas tend to replace healthier beverages and colas contain caffeine and phosphoric acid, researchers wanted to know whether cola consumption is associated with lower bone mineral density in women. The accompanying data lists the typical number of cans of cola consumed in a week and the femoral neck bone mineral density for a sample of 15

PLANE GEOMETRY (Do NOT answer the same set of questions. There are other sets of questions I posted. Answer those. Please.) Analyze and solve for unknowns in every problem given. Submit the scanned copy of your solutions. Digital solutions are highly encourage . If written solutions, use a black ballpen (if available) and white bond paper.

The owner of a zoo needs to collect $1450 revenue each day to stay in business. She sells adult tickets for $13 each and children's tickets for $8 each. a. How much revenue does she earn from selling x adult tickets? b. How much revenue does she earn from selling y children's tickets? c. Write an equation in x and y for the number of tickets she

Can someone help me with this question? FIU HW-02 EEL-3120 Problem No. 2.5 / 10 pis. 2x1 -3x2+6.x3 =-1 4x1 -x2 -4x3 5 7x1 - 3x2 - 3x3 = 2 Solve the system of linear equations by modifying it to REF and to RREF using elementary equivalent operations. Show REF and RREF of the system. Matrices may not be used. Show all your work, do not skip steps.
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Suppose x has a distribution with a mean of 70 and a standard deviation of 12. Random samples of size n = 64 are drawn. (a) Describe the x distribution and compute the mean and standard deviation of the distribution. x has_____distribution with mean x = ______and standard deviation x = ._________ (b) Find the z value corresponding to x = 73. z =

Seventeen people serve on a board and are considering three alternatives:A, B, and C.Here are the choices followedby vote: (ABC) =8 (ACB)= 4 (BAC)= 3 (BCA)= 0 (CAB)= 2 (CBA) = 5 Determine the winner, if any, usingthe voting methods in Problems A-G. A. What is the total number of votes? B. What does the notation CAB mean? C. What does the "8" next

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