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Mathematics Questions and Answers October 14, 2021

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please find derivative of y=e(^xcosx) please show work!!

I need this now please. I only need #3. I just got the wrong answere it is NOT now please. I only need #3. I just got the wrong answere it is NOT 32.42. I have uploaded an example of how it is to be done. A tattoo parlor that does piercings offers them to customers as CategoryI, II, orIII, and cost $33, $54, and $82 for stainless steeljewelry,

Prove the associative law for matrix multiplication: (AB)C = A(BC). [Hint: Let the columns of C be c1,c2,,cm and use the definition of matrix multiplication. You may also use the key fact about matrix products we established when defining matrix multiplication, that A(Bx) = (AB)x holds for any vector x .]

Find the point or points on the curve C: y= e^(-x^2) at which the curvature is 0.

Hello, I really need help with these problems. I just can't figure out how you know where to plug in the numbers in the formulas y=kx, y=k/x, and y=kxz. I've asked for help from the professor and number of times and the way she explains it to me I just don't understand. She doesn't do a lot of explaining actually, just asking questions of the next
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write the first five terms of the arithmetic sequence. find the common difference and the nth term as a function of n. a 1 =2, a k+1 =a k -4

The table shows the times Allison clocked in and out of work this week. How many total hours did she work? Write your answer as a decimal. Table: http://prntscr.com/f8rh3m 46.4 46.25 47.25 47.75

In a random sample of 28 people, the mean commute time to work was 33.2 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95 % confidence interval for the population mean mu. What is the margin of error of mu? Interpret the results.

solve the formula for d. Then, given C= 188.4 yards and = 3.14 find the length of the diameter d

Q #1 Answer each of the questions below showing all of the steps: a)Write the number in scientific notation:2,354,107 b)Write the number in scientific notation:0.0512 c)Write the number in standard notation, without exponents: d)Write the number in standard notation, without exponents: e)Perform the indicated operations and write the answer in

let f(x)=4x^2-17 Find the average rate of change from f(x) from 0 to 3

If you are dealt 4 cards from a shuffled deck of 52cards, find the probability of getting one queen three kings

1.Joe puts up another string of balloons across his driveway. Brenda remembers that their son Brad drives a really tall SUV and worries whether the truck will be able to fit under the balloon arch. Joe figures the arch is described by the function y=-0.4x^2+10, whereis the height (in feet) of the archfeet from the center of the driveway. If Joes

Every natural number can be expressed as a sum of Fibonacci numbers, where no number is used more then once. For example, 25 = 21 + 3 +1. Express the following number in this way. 161 Finish the sum using only Fibonacci numbers. The natural number can be expressed as 161 =1 + 3 + 5 + 8 +
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#3 - Profit Maximizing Under Taxation Math 241, Winter '17 Instructions: Complete each portion of the case study as indicated on the next pages. Your submitted case study should be clean and legible. It will be graded for accuracy, readability, and work shown. You will complete this case study outside of the discussion, just like a homework

Can you give the answers for those 8 questions. Thank you for helping me Determine whether b is in co|(A), as in Example 3.41. \"iii'iihii'iwimi O b is in col(A). O b is not in coI(A). Determine whether w is in row(A), as in Example 3.41. 0 w is in row(A). 0 w is not in row(A) Need Help? i i Determine whether b is in co|(A), as in Example 3.41. 1
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It is about number theory question, step by step solution please 3. Suppose that n is an odd positive integer and write WI) _ a n b With gcd(a, b) = 1. Show that the largest prime factor of b is the largest prime factor
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6. Let A = [61 in] be an m X n matrix with RREF R = [771 Fm]. Prove that there exists an m X an invertible matrix E such that (ii = E- for 1 S i S n

Project 2 YOUR NAME____________________________________________ This project is given on page 149 in the textbook. Refer to the furniture manufacturing problem discussed in Ch3.1 pages 117-120 (Read the introduction to the problem page117-118) Maximize 80x +70y Subject to 6x + 3y

1.) 2.) 3.) 4.) Please use the below graph for questions 1-4

Topic: Math and the Bible Write a brief lesson of how you would integrate the Bible while teaching a math concept. Make sure to include an activity for the students and one that you will do with them. Provide details!

Use teshnelegy to {a} penstmet and graph 3 prehebility distributipn and {h} describe its shape. The number pf computers per hpuseheld in a small town pmputers El '1 2 3 g Hpusehelds am 235 BE 22 kill] thlEllUUl lIIH IJIUIJ'EIDIIIl'jI' DIEHIUU [IU'I'I UT GUIIIIHEIIIIQ [HE [EDIE [JEI I II] 1 M SUEDE {Reund in three decimal places as needed] Choose
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I need help 3.7.4 TEst (ts) construction and transformation answer the following questions using what's you've leavred from this unit wrote answers in the space provided \f\f\f\f
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I would like to purchase a new ca in 5 years and expect the car to cost $76,000. My bank offered me a plan with a guaranteed APR of 4.5 % if I choose to make regular monthly deposits. How much should I deposit each month to end up with 76,000 in 5 years? A. How much should I invest $--- each month?

Your company is fairly progressive and has started to use peer-evaluations in the performance evaluation process with the idea that nobody knows team members behaviors better than the team. Each individual completes a self-evaluation and then one evaluation on each member of the team. The overall average is used to calculate performance grades for

the average price of a loaf of bread n years after 1950 is approximated by the sequence a n =0.05n+0.14 use the sequence to predict the price of a loaf of bread in 2004. A: $2.79 B: $2.89 C: $2.94 D: $2.84

Let A be a nonempty subset of a metric space X. Define f : X [0, ) by f(x) = inf{d(x,a) : a A}. Prove that f is continuous.

Related to differential equations I have found a solution to a DE which is y = (9/13)Ae^(-2x)+(4/13)Acos(3x)+(19/39)Asin(3x). where A is a parameter family of solutions. So my graph consists of a= -.5 through 2.5, using intervals of .5. In the graph, these 7 curves intersect (i think because of the cos and sin function) every pi/3 along the

You are planning to establish a retirement savings plan by setting aside money at the end of each year.It is your hope to retire at age 55 with a pension income of $100,000 per year received at the end of each year, for 20 years, from the money accumulated in this fund.You expect to earn 8% per year on the fund assets as they accumulate, and on

A long year-end status report for work is 134 pages long. You need to print 19 copies for a meeting next week. How much is the paper going to cost for those reports? Paper is sold in reams (500 pages) for $3.52 each. $______ Give your answer to the nearest cent, only for the paper you use (partial reams are OK)

How to setup a coordinate system on graph paper, then sketch the line passing through the point P with the slope m. P ( 3 , 3), m = 3 / 4

I don't know how to solve this! Can someone please explain and solve? Evaluate the function at each specified value of the independent variable and simplify. (If an answer is undefined, enter UNDEFINED.) f(x) = 2x 6 (a)f(1) (b)f(6) (c)f(x 1)

Final Review Set - Math 240 (Spring 2017) Show all your work for each problem (you may use a calculator or computer - that is, \"technology\" as we would say - but explain what commands you used and your interpretation of the results. If possible, show screen shots of the application used.) (1) [8] Find a basis for the subspace spanned by the

4 This assignment covers material from Units 10 to 12 in the Mathematics 244 Study Guide. It is due after Unit 12 in the Study Guide is completed. Total Marks = 100 1. Business Mathematics A debt of $12,000 is to be amortized by equal payments at the end of each month for five years. Interest is charged at 24% compounded monthly. a. What is the

The frequency distribution in the following table lists the results of a quiz given in Professor Gilbert's statistics class. Find the mean, median, and mode of the scores. (Round the mean to one decimal place. If more than one mode exists, separate your answers with commas. If an answer does not exist, enter DNE .) mean median mode Score Number of

3. Solve the equation. 2 5 4 = x1 x + x 2 x 21 4. Perform the indicated operations and express your answer in simplest form. 2 a+2 a +3 a+ 4 a3 + 2 a+ 3 2 a2a6 a2 Solve the equation and check your answer. k 5 + =3 4 k

_;-..-,_-;...;. AT&T LTE 7:39 PM Ii gaucl'iospace.ucsb.edu r-.-._ v #3 We BWorK F .4 MAA HATHEHATIEAL ASSDCMHDH CF AF4R1CA > webworit mathEa02-31?-patei homework_B_s1? 15 Homework 8 S17: Problem 15 (1 pi) For each of the following. decide if the given vector eld is a gradient of a function f. It so. give nd the function f and enter it as your

Donut Delights, Inc. has determined that when x donuts are made daily, the profit P, in dollars is given by P(x) = 0.002 x2 + 4.1x 1200 (a) What is the companys profit if 600 donuts are made daily? (b) How many donuts should be made daily in order to maximize the companys profit? Please show work. work.

1. Find the rst four nonzero terms in a power series expansion about x :Oof the solution to the initial value problem 2y\"+xy'+y=0 , y(0)= l, y'(0) =1. (22 points)

The length of the top of a table is 3 m greater than the width. The area is 70 m^2. Find the dimensions of the table.

How many grams of 2.5% hydrocortisone (HC) cream should be mixed with an ointment base to prepare 100gms of 1% HC?How much of the ointment base will be needed for the previous problem?

Factor each of the following. a. Factor 2 x 2 +11 x +15 using algebra tiles. Answer: b. Factor 2 x 2 +11 x +15 symbolically. Answer: c. Explain how the two methods are similar. Answer: Near the beginning of Lesson 5.3 , a strategy for factoring trinomials of the form x 2 + bx + c was developed by exploring the product of the binomials ( x + p )

Are polynomials closed under division? Use your answers to Problem 2 to help explain. Then tell why polynomials must be closed under addition, subtraction, and multiplication. Use your answers to Problems 1 and 3 to support your explanation. Juan has a rectangular corral for his horses. The length of his horse corral is 10 ft longer than 3 times

Math 1304 Name___________________________________ Rectangular Coordinate System and Graphs Directions: Please show enough work to justify your answers. State in which quadrant, if any, the point lies. 1) (13, 12) 1) 2) (-17, -6) 2) 3) (0, -2) 3) Find the x- and y-coordinates of the following labeled points. 4) 4) y 8 A 6 4 B -8 -6 2 -4 -2 2 4 6 8

To test the efficacy of a new cholesterol-lowering medication, 10 people are selected at random. Each has their LDL levels measured (shown below as Before), then take the medicine for 10 weeks, and then has their LDL levels measured again (After). Give a 92.4% confidence interval forBA, the difference between LDL levels before and after taking the

MAT 510 - Homework Assignment Homework Assignment 3 Due in Week 3 and worth 30 points The following data consists of the actual time used and potential (the best time possible for this review process) to complete each step in the review process. The actual times are based on the review of 30 projects. The potential times are subjective engineering

Find the period and amplitude of the function. Give the exact values, not decimal approximations. \f
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A ball is thrown straight up from a rooftop 300 feet high. The formula h = -16 t 2 + 20 t + 300 describes the balls height above the ground , h , in feet, t seconds after it was thrown. The ball misses the rooftop on its way down and eventually hits the ground. When will the balls height be 304 feet?

[ Entered | Answer Preview 2*pl'r'[r*asin[r}-r-r'aslnf]] 21:!\"(3' sin-1 (1*) - r' - r sin-1011)) [1 point) If the some y = x), a 5 x 5 b, is rotated about the horizontal llne )1 = c, wherex) S c, than one can prove that a formula forthe area ofthe resulting surface is b S =/ 2gp: f[x)]1l)1 + [f'{x)]3ct. nd the area ofthe surface generated by
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1.) 2.) 3.) 4.) 5.)

DUE IN 3 HOURS Find all complex solutions with shown work. 3y^2 +4=y^4

A plane flying at an altitude of 3.0 mi is at a direct distance D = square root of 9.0 + x 2 from an airport control tower, where x is the horizontal distance to the tower. If theplane's speed is 340 mi/h, how fast is D changing when x= 8.3 mi?

Find the value ofn(A B) if n(A) = 12 , n(B) = 15 andn(A B)= 6 n(A B)=

Find the mean, median, and mode for the following distribution. 4, 5, 4, 1, 3, 7, 6, 9, 15

ch 8 18. For the following item, calculate the missing information. Round dollars to the nearest cent and percents to the nearest tenth of a percent. Do not enter the percent symbol in your answer. Item Original Selling Price Amount of Markdown Sale Price Markdown Percent suitcase $71.00 $ $45.54 %

Solve the initial value problem. dP dt = 2e^3t, t 0, P(0) = 7

complete parts a and b the number of dogs per household in a small town DOGS 0,1,2,3,4,5 Probability 0.649, 0.218, 0.087, 0.027, 0.013, 0.006 a. find the mean variance and standard deviation find the mean of the probability distribution b. find the variance of the probability distribution c. Find the standard deviation of the probability

DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

(1 p1) Determine 1119 standard matrix A of the linear mapping L 2 R3 > R3 that mtates any vector counterclockwise emund the 2: axis (i.e. Ihe zcoordinate remains unchanged) through an 'a'T angle of E. A: |
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Module 03 Application Assignment-Truth Tables in Excel Instructions: Construct truth tables for the following logical formulas, and then state whether the formula is satisfiable, is unsa Problem 1. ((p V q) p) q Problem 2. ((p V q) p) q Problem 3. (p V (r q)) ((p V r) (p V q)) e formula is satisfiable, is unsatisfiable, or is a tautology

The centrifugal force exerted on rotating turbine blades varies directly as the square of velocity. If the centrifugal force of 1.21 times 10^6 N is acting on the blades that move at 550 m/sec, find the instantaneous rate of change of the centrifugal force as the velocity increases to 840 m/sec. Thank you in advance for the help. Any steps that

Understanding Standard Deviation Name: ________________________________ 1. Without doing any calculations, match the dot plot to the corresponding mean and standard deviation on the right. (A) a) ____ mean = 11, standard deviation = 6.3 b) ____ mean = 11, standard deviation = 3.4 c) ____ mean = 11, standard deviation = 4.1 d) ____ mean = 11,

Suppose that the dollar valuevtof a certain house that istyears old is given by the following exponential function.v(t)=295,300(1.08)t Find the initial value of the house. $ Does the function represent growth or decay? growth decay By what percent does the value of the house change each year? %

1. I need to write a system of linear inequalities with a bounded solution set. 2. I need to write a system of linear inequalities with an unbounded solution set. 3. What is the intersection of the line y = 4x - 2 with the x-axis? 4. What is the intersection of the line 2y + 3x = 1 with the x-axis? In the following two problems, define two

Frank Cronin must make a balloon payment of 20,000 in four years. Find the present value of payment if it includes annual interest of 6.5% compounded monthly.

the ratio of women to men at a local college is 6:7. if there are 1,400 women attending this college, how many total students are enrolled there. Round your answer to the nearest student

which expression is equal to (x+2)(x-4)/(x-4)(x+4)? x+4/x+2 x-2/x+4 x+2/x+4 x-2/x-4

If (a,b) is an ordered pair solution of x-y=5, is (b,a) also a solution? Explain why or why not

find the derivative of y=tan^-1(sq rt of x) Please show work

An oil refinery is located on the north bank of a straight river that is 1 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 4 km east of the refinery. The cost of laying pipe is $500,000/km over land to a point P on the north bank and $1,000,000/km under the river to the tanks. To

The velocity v , in feet per second, of the water pouring out of a small hole in the bottom of a cylindrical tank is given by v = 64 h + 10 where h is the height, in feet, of the water in the tank. What is the height of the water in the tank when the velocity of the water leaving the tank is13ft/s?Round to the nearest tenth.

You are rearranging your bookshelf to make it more interesting and harder to find anything on it. On one of the shelves you plan to put 11 biographies and 8 mysteries. How many ways can you arrange them on the shelf if you don't want any two mystery books next to each other (i.e. they need to be separated by at least one biography, maybe more...

Hello, I've attached the problem here! Can someone help me out please? Problem #1: Determine the stress response 0(1) for the Maxwell model in response to a strain function (where a is a constant): (t)=at, t 20 For E = 100 kPa and n = 500 kPa-s, plot the stress responses for a = 0.01 3'1 and a = 0.02 3'1 from 0 to 10 s. Then plot the stress vs.
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quest 8 Solve the following inequality 2x 2

Solve the radical equation. (4x+1)"3+1=7 Saiect the correct choice below and, if necessary, ll in the answer box to complete your choice. 0 A- The soiutton set is .. (Type an exact answer, using radicals as needed. Use a comma to separate answers as needed.) 0 B. The solution is the empty set. h Click to select and enter your answer(si

EEE 202 Lab 6: AC Measurements Instructions. This document comprises the lab manual for Lab 6: AC Measurements. Complete the pre-lab exercises, perform the lab experiment, record your results, and prepare your lab report by following the instructions contained in this document. Save only the pages comprising the lab report into a new document

0DWK\u0003\u0014\u0016\u0013\u0017 1DPHBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB *5283\u0003352-(&7 ',5(&7,216\u001d\u0003\u00033OHDVH\u0003VKRZ\u0003DOO\u0003ZRUN\u0003IRU\u0003HDFK\u0003RI\u0003WKH\u0003SUREOHPV\u0003VKRZQ\u0011\u0003\u00037KLV\u0003LV\u0003GXH\u0003WKH\u0003ODVW\u0003GD\\\u0003RI\u0003FODVV\u0011 \u0007 g g g g g

the measure of an angle in standard position is given . find two positive angles and two negative angles that are coterminal with the given angle. enter your answers as a comma-separated list. -5pie/4

Please help me with this exercise by today. come up with at least 3 different topics.. thanks. about 60 wrds or more each. Thanks!!! Group Exercise 92. One of the best ways to learn how to solve a word problem in algebra is to design word problems of your own. Creating a word problem makes you very aware of precisely how much information is needed
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You see a car in a dealership with a net cap cost of $29,000. You are assuming that in 3 years the residual will be $15,000. Sales tax is 11%. You could buy the car with an 115 down payment and three-year loan that charged 3% interest compounded monthly. You could lease it for $445 per month. Would it be cheaper to buy or to lease the car? Explain.

The purpose of this problem is to prove the Rank-Nullity Theorem. Let T : Rn Rm be a linear map. Let {u1 ,...,uk} be a basis for ker(T), and extend it to a basis {u1 ,...,uk ,v1 ,...,vr } of Rn. (a.) Why must r = n k? (b.) Show that range(T) = span{T(v1 ),...,T(vr )}. (c.) Show that T (v1 ), . . . , T (vr ) are linearly independent. (d.) Conclude

'1} x} - 4x3 Fer the funetlen , do the realewing: a} Eemplete a table of veiuee eentelning at least ve peinte. Shem your work. h} Sketch the function on the ee-erdlnete plane. e} Deeehe the function's end hehaurler. \f
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What is the alpha-level in statistics if it is non-medical related? Pertaining to QMB 3600.

The graph of the equation X1=65 is a horizontal line at the value 65 true or false?

A method is desired for projecting the future salary of U.S. Congressmen based on the historical record of yearly salaries for Congressmen over the previous 30 years. Choose the proper statistical technique to use from the list below. Group of answer choices Correlation Two sample test for proportions Simple regression Two sample test for means -

A company wants to decrease their energy use by 16%. If their electric bill is currently $2,000 a month, what will their bill be if they are successful? Give your answer accurate to at least the nearest dollar. $ _______ If the company's electric bill for next month is $1720, should that be considered a success? No, that is not a success Yes, that

How long will it take for an investment to triple, if interest is compounded continuously at 7 %? It will take how many years before the investment triples. (Round to the nearest tenth of a year.)

Sketch a right triangle corresponding to the trigonometric function of the acute angle . Then find the exact values of the other five trigonometric functions of . tan( ) = 3 2 sin( )= cos( )= csc( )= sec( )= cot( )=

Exercise Set 3.2: Solving Systems of Linear Equations Using Matrices Determine whether each of the given augmented matrices is in row reduced form. If not, state the condition or conditions that have been violated. 10. 1 0 0 1 0 0 0 0 0 1 4 8 1. 1 0 0 0 1 3 11. 1 0 3 6 0 1 5 10 2. 1 2 0 0 0 0 12. 1 1 11 17 0 1 0 2 3. 1 1 6 0 1 4 13. 1 0 1 6 13 0 0

Algebra 2 Writing Assignment: Algebra of Quadrilaterals Each problem is worth 5 Points Total Points: 50 Solve each system of equations. Show your work. 1. Use the following image for problems (a) - (f). ABCD is a parallelogram. (a) Angle DAB measures 4 x 2 and angle BCD measures 47 . Find x. (b) Angle ADC measures 3 x and angle BCD measures 5 x .

Focus groups are associated with this type of sample: a. Quota Sample b. Disproportionate Stratified Sample c. Purposive Sample d. Snowball Sample

The number of taxi accidents is approximated by y = -143.3 x^2 + 1823.3x + 6820 and the number of injuries is approximated by y equals -416.72x^2 + 4416.7x + 8500y. Let x=0 represents? 1990, x=1 represents? 1991, and so on. (see full problem below) \fThe number at taxi accidents is approximated by y = - 143.3:2 + 1523.33. + 5320 and the number at
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Solve by finding the square root: 5 r 2 - 180 = 0 2.- You are building a rectangular planter. You want the area of the bottom to be 90 f2.You want the length of the planter to be 3 f longer than twice its width. What should the dimensions of the bottom of the planter be? 3.- Solve each equation by completing the square. If necessary, round to the

What is the coefficient of the term of degree 6 in the polynomial below? 3x2-14x6+6x3+12x+5x5 \f
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I need help completing the proof below. I know that #3 reason is opposite angles are congruent #6 is diagonal s bisect each other The two that I am unsure of are #5...I think it is consecutive angles are supplementary #7...I don't understand what it is asking for. 3. Fill in the missing statements and reasons in the proof. (5 points; 1 point for
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Donnie Smith Mohacsy MAT 243 ONLINE A Fall 2017 Assignment Unit18 Binomial Theorem due 09/27/2017 at 11:59pm MST Answer(s) submitted: 1024 1280 640 160 20 1 1. (1 point) Find the coefficient of x7 in (1 + x)15 . Answer(s) submitted: 6435 (correct) 2. (1 point) The Binomial Theorem. Let 5 5 4 3 (score 0.5) 2 p(x) = (2x 1) = ax + bx + cx + dx + ex +

Which choices are in the solution set of the equation below? Check all that apply.10x = 15

A .Let f ( x ) = 3 x 2 +5 x - 2 and g ( x ) = 2 x - 1 (aa) Find the composite function(fo g)(x)and simplify the results. (bb) Find (f o g) (-3) B. For the function given in above A, (aa) Find (g o f) (x) (bb) Find (g o f) (-3)

You want to have $5000 by the time you finish college in 3 years. How much money should you deposit each quarter for the next 3 years into an account paying 8% per year compounded quarterly so that you can have $5000 when you finish college? a) $368.80 b) $372.80 c) $370.80 d) $369.80 e) $371.80 f) None of the above.

ch 9 12. Use the percentage method of income tax calculation to complete the following payroll roster. Do not round intermediate calculations. Round your answer to the nearest cent. Click here for Exhibit 9-1 and Exhibit 9-2 employee martial satutes withholding allowances pay period gross earnings income tax withholding Farley, D. M 4 Biweekly

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