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Mathematics Questions and Answers February 13, 2023

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(1 point) Write each of the given numbers in the polar form ret, -
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50) The estimated change in the mean salary (in $1.000) when an employee is a year older 50) holding experience constant is
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Case 2 Broadcasting the Olympic Games The Management of the WBO television network has been celebrating for days. What a coup! After several unsuccessful attempts in recent decades, they nally have hit the big jackpot. They have won the bidding war to gain the rights to broadcast the next Summer Olympic Games! The price was enormous. However, the
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A hunter shoots an arrow directly at a squirrel on a tree branch and the animal falls as soon as the arrow leaves the bow. Will the arrow hit the squirrel? Plot the trajectories to be expected under what conditions will the arrow not hit the squirrel?

Solve the given differential equation by using an appropriate substitution. The DE is a Bernoulli equation. x dy/dx (1 + x ) y = xy 2

Find the present value of an ordinary annuity with payments of $11,000.00 paid semiannually for 19 years at 3% per year compounded semiannually. (Round your answer to the nearest cent.)

Reflect on the concept of lines and quadratic functions. What concepts (only the names) did you need to accommodate the concept of lines and quadratic functions in your mind? What are the simplest line and quadratic function you can imagine? In your day to day, is there any occurring fact that can be interpreted as lines and quadratic functions?

Suppose a vector y is orthogonal to vectors u and v .Show that y is orthogonal to any linear combination of u and v . This question involves linear algebra proof.

Answer question no work needed. Question 1 (1 point) Find a SVD for the following matrix. 4 11 14 8 7 -2 Which of the following is VT? O 2 2 -2 -1 2 2 -2 1 O 1 2 2 -2 -1 2 2 -2 1 O 1 2 2 -2 -1 2 2 -2 1 O -2 -1 2 2 -2 1
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Suppose A, B and C are sets in a universal set U. Represent a Venn diagram for sets A (B C) and (A B) (A C). What conclusion do you draw from the diagram?

15. Ray needs to mail his Christmas cards and packages and wants to keep the mailing costs to no more than $400. The number of cards is at least 20 more than twice the number of packages. The cost of mailing a card is $1 and a package cost is $5. a. Write a system of inequalities to model the problem. b. Graph the system. Copyright @ 2018 by
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find an equation of the line that goes through the points (-10,55) and (-3,20). put in form y=mx+b

Insert the visualization instead the link 2: Wrong method. Measure 2 cylinders and find volume to calculate size of effect in graphic. Size of effect in data can be calculated using the numbers provided on each cylinder. Then, apply the results to the LF formula. Determine the Lie Factor of 2 cylinders, not individually

Hi i am very confuse in these problem. Help me out Let M be an n x n matrix of integers. Suppose that M is invertible when viewed as a matrix of rational numbers, i.e., that there exists an n x n matrix N with rational entries so that MN equals the n x n identity matrix. View M as an endomorphism of 7". a) Show that Z" /MZ" is finite. b) Show that
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Let A be an n n symmetric matrix such that the eigenvalues of A are as follows: 2, with multiplicity 1, and 1, with multiplicity n 1. a) Suppose we start the power method on A with a random vector q0. Will the power method converge, and if yes, to what? b) Is there any vector q0 such that if we start the power method at q0 it will fail to converge

David scored 95, 88, 87,and 85 on his exams. What's the lowest score he has to obtain on the next exam to have an average that is greater than or equal to 90? And how do you set this up as an inequality to answer?

The solution set to a system of dependent equations is given. Write three ordered triples that are solutions to the system. Answers may vary. {|(64y15z 3 ,y,z) (64y15z3,y,z)| y and z are any real numbers}

A pilot was scheduled to depart at 4:00 pm, but due to air traffic, her departure has been delayed by 10 minutes. Air traffic control approved a new flight plan that will allow her to arrive three times faster than she calculated in her original flight plan. Let x represent the time, in minutes, of her original flight. Put together an equation

11. In general, how would the performance noted in problem 9 change if cast steel was substituted for sheet steel
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Which of the following tables represents a function? x=3344 y=2233 x=5555 y=2288 x=3355 y=4567 x=4455 y=2233

What happens if we graph bothfand f-1on the same set of axes, using the x-axis for the input to bothfandf-1? [Suggestion: go towww.desmos.com/calculatorand typey=x 3 {-2 < x < 2},y=x1/3{-2 < x < 2}, and y = x {-2 < x < 2}, and describe the relationship between the three curves.] Then post your own example discussing the difficulty of graph bothf

Can please explain step by step? A candy company places an average of 20 truffles in a one-pound box. The number of truffles per box never varies from the average by more than 2. A. What could be an absolute value inequality to represent this situation, using x to represent actual number of truffles per box? B. Solve the inequality. Show all work

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Show all work of these word problems, a company has determined that the demand function for a dining room table is given by p=1200-1/2x ... A company has determined that the demand mction for a dining room table is given by l p = 121]] x wherep is the price per table andx is the number oftables sold. The xed cost 2 of producing a line of dining
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2 u = 0 (0 < x < 1, 2 < y < 2), u y (x, 2) = /4, u(x,2) = u(0,y) = 0, u(2,y) = cos(y /4) solve this initial value problem (IVP) problem by using the method of separation of variables. (Please, share the solution step by step)

A student claims that a sum of two primes is never a prime. How do you respond? Choose the correct answer below. A. The student is correct; the sum of two odd prime numbers is never prime. B. The student is incorrect; the sum of two odd prime numbers is never prime. C. The student is incorrect; a counterexample is 2 + 3 = 5. D. The student is

A sheet of metal in the shape of a parallelogram ABCD (labelled so that the diagonals are AC and BD ) is hanging from the ceiling. Three vertices are located at A = (1, 2, 6), B = (3, 3, 4), C = (2, 3, 3) (all in metres). a) Find the vectors BA and BC . b) Find the location of the vertex D . c) Show that the parallelogram is in fact a rectangle.

I failed these questions on my classwork yesterday so I need to see what I did wrong so please explain your answer. 10. Determine the equation ofthe line that contains the two points ( 5, 2) and (6, 1). Write the equation of the line in slope-intercept form. {} Bonus: Is this function increasing or decreasing? 11. A plumber charges $42.50 per hour
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Let f be the function defined as follows: (.x - 1/+2, for x1- and lim x>1+ Lim x>1- : |x+1/+2, x1+ : 2x^2+3x : 2(1)^2+3(1) : 2+3=5 5/4 , the graph is not continuous there
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The number and types of competitors a marketing manager must face-and how they might behave-is called the environment
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To adjust the bearing preload on a steering gear, the torque required to rotate the input shaft must be correctly measured. Technician A said that an indicating-type torque wrench should be used because it will click when the correct torque is reached. Technician B said that only a dial-type torque wrench should be used. Who is correct? a.

Can you help me to answer these two questions as soon as possible? Thanks (4) Let 30(3), (1(27) be continuous functions. Consider the ODE y\"+py'+qy=0. (a) From lectures, recall that the set of all solutions to this ODE gives rise to a vector space, V. Show that V is an inner product space with inner product (f, 9) = f(0)9(0) + f'(0)g'(0)- (b)
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You pay a babysitter $30 each week for driving your children to school and $12 for each hour she watches them. Write a function in x that represents the total amount you pay your babysitter in a week. Be sure to indicate any domain restrictions. f(x)=

Question : Shear Stress in Laminar Flow [15 parkde] An automobileecrankshaftf is 3.175 cm iim dleanedder A bearinggom threeshafttis 3.183cm in diametterand 2.8 cm long. The bearing is lubricated with SAE 30 oil at a temperaatre of 365 K. Assuminggthat the shaftt is centreally located in the becamgg, dettennine ehow much heat must be removedd to
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Determine whether the graph of y = 3 x is symmetric with respect to the origin, the x-axis, or the y-axis. Which is true: A) symmetric with respect to the x-axis only B) symmetric with respect to the y-axis only C) symmetric with respect to the origin only D) not symmetric with respect to the x-axis, not symmetric with respect to the y-axis, and

Use the Laplace transform table and the linearity of the Laplace transform to determine the following transform. Complete parts a and b below. .'Z'{4t2 e '8t - e 9' cos t} a Click the icon to view the Laplace transform table. a. Determine the formula for the Laplace transform. ${4t2 9 _8t - 2 9t cos Wt} = Cl (Type an expression using 5 as the
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1. Use the full truth table method to determine whether the following argument forms are valid or invalid. *a. p=q b. p >q *c. PVq d. p>q ~ p -pv-4 pv ~q 1 .. P 1:. ~9 1 . .~ p =q 1.. D=q te. pv~q f. p= ~q *g. p) ~ q q V~ p q VP - (p V q ) VP - (p . 4) > ( q vp) 1:. ~ (p = ~q) 1:.~qv~p 1 .. ~ (p. q) ) ~ p h. (pv q ) ) -r *i. p _(~q'~r) j. (p = q)
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I need help in how would you take this math problem and write out how you solve it. Step by step.. During the 1998-1999 Little League season, the Tigers played 57 games. They lost 21 more games than they won. How many games did they win that season?

solve the given differential equation by using an appropriate substitution . The DE is OF the Form dy = F ( AX + By +c ). x dx 97 = (x+y+ 3)
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1. A g kg mass is attached to a spring with stiffness k = 16 me. The mass is displaced 1:2 m below the equilibrium point and given a downward velocity of J? mfsec. Neglecting any damping or external forces, write the differential equation that models the problem, determine the equation of motion of the mass, write your answer in the form: MU?) -
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6) the half-life of two products of a chemical disaster are shown: a) Draw a graph showing the percent remaining during the first 5 half-lives. b) Express the percent remaining as a function of the number of half-lives elapsed n.C) what percent of the substance remains after one week? D) How long is it until the percent remaining of each substance
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Provide an appropriate response. The demand for a Dillard's evening dress priced at $300 is zero, but at $100 the demand is 80. On the other hand, Dillard's will not sell any evening dresses priced at $10 and is willing to sell 160 dresses priced at $290. Find the market equilibrium price. Round your answer to two decimal places. Give your answer
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State the intervals over which the graph of f(x)= |x-4| is increasing/decreasing.

Please help and and explain how u got each answer X the space provided. You have a credit card with a balance of $754.43 at a 13.6% APR. You have $300.00 available each month to save or pay down your debts. a. How many months will it take to pay off the credit card if you only put half of the available money toward the credit card each month and
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10. An astronaut whose mass is 80 kg on the Earth is in a spacecraft at an altitude of 10 Earth radii above the Earth's surface. His mass there is
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(1). To solve the equation f(:1:) = 0 by the Newton method, let's derive the associated xed point function g(:r) explicitly. Verify that _$_f@] gt\") ' it?) :a:(2a:s). Then the xed point iteration method gives us the following scheme pn+1 : pin-(2 _ a pn): for n 2 0: (l) with an initial value pa for approximating the reciprocal of a in [1, 2).
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Please written by computer source How to go from this equation: BW = FFM + FM to this equation: dFFM/dt = [ (dFFM/dFM) / (1 +dFFM/dFM ] dBW/dt PLEASE SHOW ALL STEPS

Need answer The number of customers at Quiet Morning Bakery is believed to follow a Poisson distribution with a mean of 2 customers per minute. During a randomly selected five minute interval, what is the probability of 4 customers arriving to the Quiet Morning Bakery? 0.4032 0.0293 0.4539 0.0189 0.1126
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In many instances it is a good idea to use graphical representations to support the text in reports or business documents. Conduct research and find graphics or illustrations that might be used in documents providing information about the following: research results relating to increases or decreases in unemployment information about staff

I'm having issues with the following question Company ABC makes and sells widgets. The profit, in dollars, to produce widgets is P(x)=-0.02x2+18x-600 for 0 a) Find the vertex of the profit function using algebra b) State the maximum profit and the number of widgets which yeild the maximum profit c) How many widget must be produced and sold to earn

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A 4.15 percent TIPS has an original reference CPI of 182.1. If the current CPI is 188.3, what is the par value of the TIPS? Multiple Choice $1,000.00 $1,004.75 $967.07 $1,034.05
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Please help!! Find a polynomial function of the lowest degree with rational coefficients that has the given numbers as some of its zeroes. A) f(x)=x^3+9x^2+20x+20 B) f(x)=x^3-8x^2+21x-20 C) f(x)=x^3-4x^2-(3-4i) x + 12 + 16i D) f(x)=x^3+8x^2+21x+20

Alan, Bob and Charles worked together on a job and earned a combined total of $380. Alan earned $40 less than Bob. Charles earned twice as much as Alan. How much did Alan earn? How do i get the algebraic equation for this question?

(25 pages) Which of the following functions represent the volume of the right rectangular prism with dimensions given in the diagram? Select all that apply. 2x + 6 x-2 3x + 4 V(x) = (3x +4)(x - 2)(2x+6) V(x) = 6x3+ 14x2 - 28x - 48 V(x) = 6x+8 V(x) = (3x +4) + (x -2) +(2x+6) V(x) = 6x3-48 Submit Answer +
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Please the answers to these questions. I appreciate you. Have a great day. It's going to be a huge help. Thank you. HW Score: 60.29%, 10.25 of 17 points @ Points: 0.5 of 1 Question 12, 8.0.13 Part 2 of 2 Homework: Section 80 _ _ Use an annual growth rate of 1.5% in a 30 year period for a certain population to nd the approximate doubling time and
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Thar's Gold in Them Thar Hills! Imagine you are in the Klondike during the gold rush. Your job is to measure the number of ounces of gold prospectors turn in. You have a pan balance1 and exactly three weights. If the weights are 1oz, 5oz, and 10oz, you can weigh a maximum of 16oz, but you cannot weigh a piece of gold that is exactly 2oz. If the

4. Use the perturbation method to find the 2x-periodic solution of + + 2x - er = F cos(t), where F = O(1) and
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Question 4 (1 point) Consider a function, f(x), where: f(8) = 44 f(-8) = 44 f(5) = 31 f(-5) = 31 What can we say about this function? It is odd It is even it is neither Question 5 (1 point) Consider a function, f(x), where: f(4) = 44 f(-4) = -44 f(6) = 31 f(-6) = 35 What can we say about this function
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Section il - Solve the 3 problems below 1. A 20-year 7% coupon bond is trading at 10%% yield. Currently the price of the bond is 81 60. When the yield of the bond increases by 20 basis points the new price is 80.04, when the yield of the bond decreases by 20 basis points, the new price of the bond is 83.27. Calculate the approximate duration and
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Instructions: Answer the following Question, and select the correct response. Determine which sentence is a statement. a. Was George Boole born in Lincoln, England? b. Was George Boole a mathematician? c. George Boole was the best mathematician of his time. d. George Boole was born in 1815. Select the correct response: O A O B O C ODQuestion 13 of
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What is the accumulated sum of the following stream of payments? $782 every year at the end of the year for 14 years at 7.37 percent, compounded annually.

Problem Set 10 Solve the following problems. 1 . A large tank holds 100 gallons of fluid in which 10 pounds of salt is dissolved. A mixture containing 12 1b. of salt per gallon flows into the tank at the rate of 6 gal. / min. and the well-stirred mixture flows out of the tank at the rate of 4 gal. /min. a.) How many gallons of solution are in the
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Please provide solutions to the first and second question and third questions within the next 2 houres if possible Problem 3: Assume that the length of the concrete sections is L = 19 meters long, that the mass of the car is 1250 kg and the mass of the driver 80 kg. (a) Find Verit for this car and driver. (b) At what velocity does a series of
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1. Rod says that he is thinking of a one variable polynomial expression that has the following characteristics: a. has a degree of 4 b. has three terms c. one of the terms has degree 1 d. one of the terms has a coefficient of -5 e. has a y-intercept at 10 What are two different polynomials that Rod could be thinking of? Are those the only possible

For each of the following quadric surfaces find principal axes; identify the surface; sketch the surface with respect to principal aces; find the points on the surface. part a,d,g. 4. For each of the following quadric surfaces find principal axes; identify the surface; sketch the surface with respect to principal axes; find the points on the
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Describe the situation in which the distance that point x is from 18 is at least 13 units. Express this using absolute value notation.

--Solve the initial value problem: dy/dx= 2e^(y)/(1+x^2), y(0)=0. --Express the solution of the given initial-value problem in terms of an integral-defined function. 3dy/dx + (6 cosx)y=x, y(0) = 4dx

A gallon tank initially contains 500 gallons of water with 4 lbs of salt dissolved in it. Water enters the tank at a rate of 8 gal/hr and the water entering the tank has a concentration of (1/3) lbs/gal. a) If a well mixed solution leaves the tank at a rate of 8 gal/hr and the volume of water is the same, what is the quantity of salt at time t? b)

Problem 1.6. Describe informally a non-deterministic Turing machine that recognizes the language A consisting of strings of 0's and 1's which contain two disjoint copies of the same substring of consecutive 0's and 1's of length 10. Preciser A = {101102103102104 I 101,102,103,104 E {0, 1}it Wlth I102| = 10}. You should provide some but not all of
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a) find y as a function of t if 121y'' - 88y' + 52y = 0 y(0) = 6 , y'(0) = 8 y(t) = ? b) find y as a function of t if 16y'' + 40y' + 41y = 0 y(2) = 6, y'(2)=6 y= ? (please keep it in fractions not decimals)

Express the following rate as a fraction in lowest terms. For example, you would enter an answer of 12 feet/5 seconds with 12 and feet in the boxes above the fraction bar, then 5 and seconds in the bottom boxes RATE: 3 2/5cm for 2 1/2 hours

\f\f\fed Cars Online | Touchless [ x Bb Finance 2: Borrowing Money ar X WA WA Finance 2 - Borrowing Mon. X N Netflix C a webassign.net/web/Student/Assignment-Responses/last?dep=28685023 x | + [-/6.5 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Over the past 40 years, interest rates have varied widely. The rate for a 30-year mortgage
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What dollar amount of interest did her account earn? Would we have to multiply the monthly interest by the $200 being deposited every month or the amount Lulu deposits into her account over the course of the 20 years? (0.06)*

25 If the minimum score for the letter grade B is 76, what fraction of students received a grade of B or higher a 0.2877 b 0.2776 C 0.2578 d 0.2389
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iii ll l1J ill this information, which of the following vectors is cannot be deduced to also be a member of X? Select one alternative: Suppose that X is a subspace of R3, and that we know that and are members of the set X. Based on
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2. Let us consider our usual LP in standard inequality form max I: -x subject to A): E b, x E [I with n decision variables and m constraints. We introduce slack variables: that is we rewrite it max c-xn {Primal} (All ] x = b 1:09:32 [1: m 3:3 with 3:5. the decision variables and x3 the slack variables, while 1.11 is the identity matrix. We assmne
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Find the following Laplace transforms or Laplace reverse transforms. 2) Find the transformed of Laplace of \f
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Michelle invested $900 in a mutual fund which charges a 2.5% management fee every year. Calculate how much the fund is worth after 3 years based on the annual mutual fund earnings % provided below. All rates are compounded annually. * .10 $712.31 $941.11 $997.85 $900 2.5%) o o o o 1% ) O O O O 6% ) O O O O 4% ) O O O O -5% ) O O O O
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Can someone help me answer this?? I am confused.... p Transition Probabilities (movie 6.2) Example: Suppose we are tracking smokers and non-smokers: S = smokers, N = non-smokers Each year 10% of smokers stop smoking and 5% of non-smokers start smoking. If initially 40% of the population smokes, track the trend over 4 years. 5 N p0 = [.4 .6] S .9
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Real analysis problem on a continuously differentiable function that preserves volume. 3 . Definition : A transformation of class CF : IRS - R" is called volume pre- serving if for every cube CCR', with faces parallel to the coordinate planes , volume ( F ( C ) ) = volume ( C" ). ( 1 ) Show that { ( 2 , 4 , 2 ) = ( 2 + 3 , 2 - 4 , 2 2 - 4 ) is
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a.For each of the operationsaddition, subtraction, multiplication, and divisiondetermine whether the set of polynomials of order 0 or 1 is closed or not closed. Consider any two polynomials of degree 0 or 1.

The cost of an iPhone is 40% more than last year. If the iphone cost $600 this year, how much did an iPhone cost last year? $1176 $504 $336 $600 Judy has an annual income of $59000. She pays $1500 per month in rent and $453 per week in living expenses. What is her monthly cash flow? Jed invests is a fund that pays compound interest with an APR of

1. A house is on a 60,000-squarefoot lot. Rounded to the nearest tenth, approximately how many acres are in the lot? Note: There are 43,560 square feet in an acre. 2. A wall is 300 square feet. A gallon of paint covers 110 square feet. What is the appropriate conversion factor to help determine how many gallons of paint will be needed to paint the

Recall that Sylvester's criterion can be used to show that a matrix is positive definite. Show that the analogue of Sylvester's criterion does not hold for positive semidefinite matrices. Specifically, find an n by n matrix A such that each j by j upper left submatrix has nonnegative determinant for 1 j n, but A is not positive semidefinite

Discussion Topic "I had a pretty normal day," "I have little confidence in our ability to win today," and "That's so random!" are statements you might use in conversation. We use a lot of everyday language to describe situations in statistics. Does the use of words that you're already familiar with, such as normal , confidence , and random , help

Use your linear regression equation to determine the dropout rate for the year 2010.

A. For each differential equation, give the dependent and independent variable(s), state whether the equation is ordinary or partial, linear or nonlinear and give also its order and degree. Note: DV: dependent variable(s), IV: Independent Variables - Mercurial Equation (y III-.- (2) +( ' (3) B. Eliminate the arbitrary constants in the equation y =
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A delivery truck is transporting boxes of two sizes: large and small. The combined weight of a large box and a small box is 75 pounds. The truck is transporting 50 large boxes and 65 small boxes. If the truck is carrying a total of 3975 pounds in boxes, how much does each type of box weigh?

Using the following conversions between the metric and U.S. systems, convert the measurement. Round your answer to 6 decimal places as needed 1 meter3.28 feet 1 Liter0.26 gallons 1 kilogram2.20 pounds 0.823 ozg

The solution should be original and not someone else's work. Please show all steps in detail. Consider the system of equations x' (t) = -13(t) - 2x2(t)y(t), y' (t) = 2y3 (t) + 12 ( t )y(t). (a) Find a choice of parameters a, b, c such that the function r(t) = ax(t) +br(t)y(t) +cy?(t) satisfies the inequalities r(t) 20, r'(t) 20. (b) Make a
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Solve the following LP model by Simplex Method and find x1, x2 and x3. Max Z= 4x1 + 2x2 +2x3 s.to 3x1 + 6x2 - 3x3 90 3x1+x2+x3 180 x1- x2 + x3 60 x1, x2, x3 0

Determine the following important characteristics and then sketch the graph (plotting the important characteristics): 1.f(x) =- (x + 4) 2 - 7 Graph Provide: -Direction of opening: -Vertex: -Axis of symmetry: -y-intercept: 2.f(x) = x 2 - 6x - 7 Provide: Graph: - Direction of opening: -Vertex: -x-intercept(s): -y-intercept:

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Question 4 Sales of suntan lotions are typically higher in the summer months than in the winter months. This variation is due to a 1"\" A. Trend (" B. Random factor F C. Cyclical factor F D. Seasonal Effect
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this is about Cauchy's integral thereon and formula and the derivative of analytic functions Question 3.4: Calculate the integral 2z-1 dz . Hint: You can try Cauchy's integral theorem here 2 - z and note the poles inside. Draw a graph of the circle and indicate the poles. + 1 Question 3.5: Calculate dz . = =2 22 -1 1 Question 3.6: Calculate dz .
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