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Mathematics Questions and Answers October 13, 2021

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A spring in vertical position is bolted into fixed beam. When the spring is loaded with a 120 g object causing the spring to be displaced from its equilibrium position to 10 cm. It was loaded with a 150 g object then compressed forward. Neglecting air resistance and damping, the object-spring assembly was subjected to oscillating motion. Calculate

Let S be a discrete random variable that takes the value 1 with probabilities p... Let S be a discrete random variable that takes the valu value I with probability p E ( O , 1 ) , and the value - I with probability 1 - p . Let & be a continuous random variable whose conditional distribution given S is as follows If S = 1 , then X is exponential
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Perform a "product-by-value" analysis on products A, B, C, D, and E. A B C D E Unit Contribution $0.55 $0.85 $0.75 $1.05 $0.76 Total Contribution $56,000 $124,000 $94,000 $64,000 $79,000 The list of products in descending order of their individual dollar contribution to the firm: D. B, C, E, A The list of products in descending order of their
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help me plz. In 2010, a small college had an enrollment of 9500 students. The declared majors are detailed in the table below. Major Number of students Humanitios 2348 Math & Science 861 Education 3556 Arts 1505 Underclared 1230 42. The college wants to push an initiative to decilose the number of undeclared majors to less than 5% of their
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14. Find x and the length of each side if ARST is 15. Find x and the length of each side if AABC is an equilateral triangle. R an isosceles triangle B 1/X - 2 9x + 2 with AB = BC. S 4x - 3 2x + 5 6x + 8 T X = A x+2 C
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4. Show that the function defined by the power series f (x) => (-1)" xin (2n)! satisfies the equation f " + f =0
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PLS HELP!!!! A triangle whose sides are all different lengths is a(n) triangle. O scalene right equilateral isosceles
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The larger n is, the closer the t distribution looks to the Z distribution. Group of answer choices True False

I tried answering on my own but I didn't get the answers right so I do definitely need your help in this question. Thank you Solve the equation using the quadratic formula. x2 +6x - 10=0 X = (Type an exact answer, using radicals as needed. Use a comma to separate answers as needed. Express complex numbers in terms of i.)
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Hello, I would like some help with these questions, Thank you. 2) Question 1: Find the nominal annual rate of interest at which $1500 will grow to $1800 in 4 years, compounded monthly. 3) Question 2: In how many years will money quadruple at 8% compounded semi-monthly? 4) Question 3: Surinder borrowed $1,200 and agreed to pay $1,400 in settlement
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On a statistics exam at a very large school with a class of 300 students, the professor claims the average score on the test was a 76.2%. A group of students were discussing their exam scores and found out that they had an average score of 72% with a standard deviation of 6 points. There were 9 students in the group. They start to question whether

13. The buyer of a lot pays P10,000 every month for 10 years. If money is 8% compounded annually, how much is the cash value of the lot
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assignment 2 part 1 question 1 Calculate the distance between the points F = {4, 5) and G =(1, 2) in the coordinate plane. Give an exact answer [not a decimal approximation). n 1-D-J' : 5-. 4 . . _ G Distance.|1] 11 ' I a 4 2 - 2 4 5 a 1: 4, 4-. . _ F 5- _g_ 1-:- Find the midpoint M of the line segment joining the points P = (6, 1) and O = (0, 7).
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Suppose we have a hypothetical new alphabet (unrelated to the English alphabet) with 13 letters, partitioned into 8 consonants and 5 vowels. How many 5-letter words have at most four consonants?

6.06a Trigonometric Equations Practice Assignment Solve each equation for 02. 1. sin=1 2. cos=0 3. 2cos=3 4. sec=2 5. tan=undefined 6. 2sin=-2 7. csc=1 8. cot=0 9. sin=-3/2 10. 2 sin-1=0

What is the probability of correctly guessing a two digit number?

3 7.1 Using the fractions and 3 to illustrate, explain clearly and in detail why we can determine which of two fractions is greater by giving the two fractions common denominators. What is the rationale and reasoning behind this method? In terms of pictures, what are we doing when we give the fractions common denominators? 3 3 7.2 Using the
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I got stuck on the rest of the questions, I calculated the first two and then now i'm confused. How do you find the probability distribution Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C X P(X) X P(X) X P(X) 5 0.1 5 0.1 5 0.1 10 0.5 10 0 .5 10 0. 5
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eigenvalue k = -1. 6) (5.2) Find the characteristic polynomial and eigenvalues for 3 -2 8 A = 0 5 -2 O -4 3 7) (5.3) The matrix
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G Luke is performing a science experiment involving launching a small rocket. The following measurements were taken: initial height = 0.61m and initial velocity = 36.85m/s. a. Create a quadratic model for the height in meters of the rocket after a given number of seconds. [1 APP Mar b. Verify the results of the experiment: Total airtime = 7.54
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In my unit I never saw n(S) before 2. A bag contains 5 red blocks, 1 blue block, and 7 yellow blocks. If you draw one single block, then n(S) is ... (a) 13 (b) 1 (c) 6 (d) 11
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5. A student used regression as statistical analysis in a stud}:r and determined the beta which is ,8 = 1.-'-1-563
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Hello, I get confused about how to select the appropriate statistical test. A researcher measured the same group of people's physiological reactions while watching horror films and compared them to when watching comedy films, and a documentary about wildlife. The resulting data were normally distributed. What test should be used to analyze the

To test for the equality of two population variances, independent samples gave the following summary measures : Sample 1 : n =11, mean = 10, sd = 4 Sample 2 : n =17, mean = 12, sd = 2 If the value of the test statistic isn't equal to 4, then it must be equal to _____ (two decimal places).

1. List four properties of the student's distribution. [4 Marks] 2. Mwangaza limited deals in the production of electronic bulbs. A random sample of 10 electronic bulbs produced by the company yielded the following results on the lifetime of the bulbs. Lifetime(hours) 4,400 4,800 3,700 3,900 5,500 4,000 3,700 4,100 4,000 5,400 Required: Test at a

There is a budgeting issue within a car racing team. The total budget of the team was $8523.50. The first Driver, Richard, states that he has used three times the amount the second Driver, Ben, has. How much money has Ben used? (Answer to the nearest cent.)

Which of the following is true about measures for a typical Purchase fact? Group of answer choices The Sales Amount would be an example of a non-additive measure Semi-additive measures cannot be summed up by all dimensions in a fact table The Discount Percent would be an example of a non-additive measure The Account Balance would be an example of

When an irregular-shaped rock is placed in a cylindrical vessel of water whose radius is 4.18 in., the water rises 6.85 in. What is the volume of the rock if it is completely submerged?

If 2.5 grams of dextrose (mw=180) is dissolved in sufficient sterile water for injection to get 100ml of solution, determine the concentration of dextrose in milliosmoles

Please help me with this. You have to use Gauss-Jordan row reduction to solve. -/1 points V WANEFMAC7 4.2.022. My Notes Ask Your Teacher V Use Gauss-Jordan row reduction to solve the given system of equations. HINT [See Examples 1-6.] (If there is no solution, enter NO SOLUTION. If the system is dependent, express your answer in terms of x, where
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questions 1-6 A researcher wanted to \f\f\f\f\f\fmaking a to-do list and the time at which people wake up have an effect on how productive people are during the day. The researcher recruited 20 people to participate in their study. They randomly assigned participants to one of the following conditions: 1) early wake-up and no to-do list 2) early
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In the following image, triangle DEF is rotated around point E to map a new image of triangle D'E'F'. Determine and state the location of F' if the location of D' is (5,7) F E D X B C
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17. An airport control tower measures the distance to one plane that has just taken off to be 500 m and the distance to a second plane coming in for landing to be 1050 m. If the angle between the lines of observation on the radar screen is 86, how far apart are the two planes? Solve using cosine law and round your answer to the nearest metre. 18.

-1 For #1 - #6, let A = and let B AN -21. 1. Find AB 2. Find BA
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Please show work Graphing Linear Equations Determine the slope and y-intercept of the line represented by the equation. 9. 2x+y=6 slope __ Y-intercept Determine the slope and y-intercept of the line represented by the equation. Graph the line using the slope and y-intercept. 10.. y=2x+3 I . . . . . _ '
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Both of a certain pea plant's parents had a gene for red and a gene for white flowers. If the offspring has red flowers, find the probability that it combined a gene for a red and a gene for white (rather than 2 for red.) Note that the gene for red is dominant over the gene for white. The probability is . (Type an integer or a simplified fraction.)
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I'm having trouble with problem 3. How would I determine the variable for x? I'm thinking the answer I got is incorrect. /CPM Geometry Review Chapt Solve for the missing variable, Show your work. 1 , 20 18 24 3 4. 10 7 Determine if the triangles are similar. Justify your response by sh choices below. 5. Circle one: AA~ SAS~ SSS~ Not similar G 460
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none i just need help. Austin Community College had 63,025 students enrolled in 2015 and 31,935 students in 2005, Answer the following questions assuming this growth follows a linear function 39. How many students will ACC have in 20257 39 40. When will ACC have 85,000 students? 40
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Suppose you are a marine biologist studying a particular species of whales. The average length of this whale species is 60 feet and the standard deviation is 12 feet. The average length of whales in Normally distributed
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Find the Taylor Series centered at x = 2 of the following function: find the Taylor Series centered at x = 2 of the following function: f(x) = 3x5 - 14x- + 21x - 9
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Modern Algebra: Finitely generated abelian groups Exercise Il. Let (a,,.. , an) be a basis of a free abelian group A and B a subgroup of A generated by bis.., th, where 6. = Zda. Prove that C= 1 (a) A/ Bis finite iff det ( 2:; ) + 0 ( 8) if det (a; ) = mto , then | A/ B| = 1ml, ( c ) ( lis.. , bu ) is a basis of A iff def (dij ) = # 1
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Which of the following inuence how much rate of return an investor will require to purchase a company's equity? 0 His or her time preference for consumption 0 Risk related to the size and frequency of dividend payments 0 Risk related to appreciation of the stock 0 All of the above 0 Only a and c
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Thanks a lot!!!!!!!!!!!!!!!!! Please use these formula: Tree diagram - is often used to show how simple experiments can be combined one after the other to form more complex experiments. independent events - if the occurrence of one event does not change the probability of the occurrence of the other event; ( ) = () () if A and B independent n(AB)

Erk > | http C webassign.net/web/Student/Assignment-Responses/submit?dep=28232711&tags=autosave#question3233951_9 4. [-/1 Points] DETAILS SPRECALC7 3.2.001. MY NO Only one of the following graphs could be the graph of a polynomial function. Which one? Why are the others not graphs of polynomials? (Select all that apply.) O The graph could be that
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Keira has decided to buy a data set from Statistics Canada to use as the basis for her research for her master's thesis. Which method of data collection is she using? a. quantitative analysis b. secondary analysis c. primary analysis d. technical analysis

Draw the given angle in standard position. Draw an arrow representing the correct amount of rotation. Find the measure of two other angles, one positive and one negative, coterminal with the given angle. 50degrees Question content area bottom Part 1 A. 410degrees and minus310degrees B. 230degrees andminus130degrees C. 230degrees and

8. A manager of a major bank undertook a survey of customers. She measured the time spent waiting in line of 50 randomly selected customers. The sample mean and standard deviation of the waiting time are 5.79 minutes and 2.86 minutes respectively. (assume the waiting time follows normal distribution) a. Give a point estimate and a 95% confidence

Let n be the poset on set partitions of [n] given by if and only if refines . (That is, every block of is a union of blocks of .) Show that the Mobius value of n on the 'full' interval is given by [^0, ^1] = ( 1 ( n 1 ) ) ( n 1 ) !

Determine the mean, median, and standard deviation of the following frequency distribution: (Round the final answers to 2 decimal places.) ClassFrequency 0 to under 545 to under 10410 to under 151315 to under 20520 to under 255 Mean Median Standard deviation

Can you explain how to get b* and TC* in part b? This is from 625HW - online - 2015 from New Jersey Institute of Technology. I attached an PDF file of the question. I am confused in Part B (alternative 2 - case 1) as to how the solution for b* and TC* are found.

6 . 1 POINT A basketball player has a 0.654 probability of making a free throw. If the player shoots 13 free throws, what is the probability that she makes less than 6 of them? Insert the correct symbol to represent this probability. Provide your answer below: P (X 5)

The usual daily dose of a drug is 2.5 mg/kg/day divided into two equal doses. How many milliliters of a 12.5% (w/v) solution of drug should be added to a 100 mL bag of normal saline and administered to a patient weighing 110 lb to provide one dose? Round answer to the nearest tenth. Do not include units.

Graph the following function over a one-period interval. yequals3 cosecant 2 x Question content area bottom Part 1 Choose the correct graph below. A. -10 10 x y pi A coordinate system has a horizontal x-axis labeled from 0 to pi in increments of StartFraction pi Over 4 EndFraction and a vertical y-axis labeled from negative 10 to 10 in increments

(iii) Determine the number of months required for system A to sell a total of a X 10, 000 systems and the number of months required for system B to sell a total of a X 100, 000 systems. [4 marks) 1. Series (10 marks) You are the owner of a cyber security rm and you are reviewing the number of monthly customers for 3 different cyber security
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1. Provide an example from your work environment of how flow time could be improved using the following levers: "work smarter" "Do it right the first time" "Work Faster" 2. A group of MBA students is preparing a business case for submission as a final project for their operations management course. Describe the process used by the group from the

Approximately 86.5% of Americans commute to work by car, truck, or van. Out of that group, 84.6% drive alone and 15.4% drive in a carpool. Approximately 3.9% walk to work and approximately 5.3% take public transportation. a. Assuming that the walkers walk alone, what percent of all commuters travel alone to work? b. Suppose that 1,000 workers are
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7. With the data provided, calculate MAD and MSE for each forecasting technique (no need to convert to $00): (8 pts) Forecast A Work: Forecast B Work: 8. Which technique would you recommend? (1 pt)
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the picture 2) Using Euler's Method with h=0.25 to obtain a numerical solution of d 3 ya docFa Subject to y(0)= 2, giving approximate value of y for x=1
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hi im stuck on this question and need help Background: Several studies in the 1990's investigated the effectiveness of using non-steroidal anti- inflammatory drugs in the treatment of familial andenomatous polyposis (FAP). The data set provided below contains the number of colonic polyps after 12 months for the placebo and treatment groups. study
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7. (15 pts) Suppose f : A - B and g : B - C are functions and that the composition go f is surjective (onto). Prove or disprove that g is surjective
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Factor out the GCF, if possible. 6x- - 12x + 18 O The expression is prime because it is not factorable. The expression is not prime. 2 6x - 12x + 18 =
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-2 w and ( it ) 2 5.1 For each of the following two symmetric matrices: (i) 2 -4 a) find the eigenvalues, b) find the eigenvectors, c) diagonalize the matrix, and b) check the definiteness
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There are 3 different questions please answer them all Question 10) Justin is saving for his retirement 21 years from now by setting up a savings plan. He has set up a savings plan wherein he will deposit $128.00 at the end of each year for the next 10 years. Interest is 4% compounded annually. (a) How much money will be in his account on the date
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Consider the three-equation model y1 = 13y3 + 12x2 + "1 y2 =21y1 +23y3 +21x1 +22x2 +"2 y3 = 33x3 + "3 where y1, y2 and y3 are endogeneous and x1, x2 and x3 are exogenous. Discuss the identification of each of the equations of the mode

Find the variance of the data summarized in this table using the formula (assume population) (4 marks) Mass Interval Frequency [60,70) 4 [70,80) 6 [80,90) 3 [90,100) 8

The waiting time (in minutes) for emergency room patients with non-life-threatening injuries was measured at four hospitals for all patients who arrived between 6:00 and 6:30 p.m. on certain Wednesday. Research question: Are the mean waiting times the same for emergency patients in these four hospitals.

Use a calculator to find a decimal approximation for each value. cosecant left parenthesis negative 345 degrees 45 prime right parenthesis Question content area bottom Part 1 cosecant left parenthesis negative 345 degrees 45 prime right parenthesisalmost equals enter your response here

Write the proof for: Given: angle(1)=angle(2) Prove: angle(3)=angle(4)

Two guy wires are attached to a cell tower. The first one is 15 ft long and at an angle of elevation on the ground of 55. The second wire is 22 ft long and makes an angle of elevation with the ground of 63. Both wires are secured at the same location on the ground. Determine how far apart the wires are attached on the cell tower. a. Draw a diagram

For #1 - #6, let A = and let B = AN 2] 1. Find A + B. 2. Find 3A
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Hi there can you answer this? Consider the random variable \\ whose probability density function is given by for 0
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Consider the matrix 2 1 1 A = 12 1 . 1 1 2 Find a unitary matrix P and a diagonal matrix D such that D = P*AP
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You have carried out an experiment to investigate the effect of the length of a pendulum on the time period of oscillation. Theory says that the pendulum should follow the rule Where: T is the time period (seconds). L is the length of the pendulum (metre). G is the acceleration due to gravity (g = 9.81 m/s 2 ). Calculate the expected percentage
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math 79 linear algebra Question 1,1.2.3 HW Score: 0%, 0 of 15 points Part 10f 3 Q Points: 0of 1 Row reduce the matrix to reduced echelon form. Identify the pivot positions in the final matrix and in the original matrix, and list the pivot columns 12 3 4 56 7 8 8910 1 Row reduce the matrix to reduced echelon form and identify the pivot positions in
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From the formula 1 1x = 1 + x + x2 + x3 + , obtain the power series representation of the following functions. Also, nd the corresponding radius of convergence. (4 points each) From the formula _ = 1+x+ + + ..., obtain the power series representation of the following functions. Also, find the corresponding radius of convergence. (a) x' In(3 + x)
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49. Identify the amplitude and period of this function: y=1/3 tan pie x

Explain how financial markets promote economic growth in developing countries. Also explain if MP has any long run impact - use AD-AS model.

P850 740 P1 221 020 P2 110 000 Down payment 10% of the price Down payment P85 074 P122 102 P211 000 The couple would have P134 312.20 at the end of 5 years The couple can choose the first two houses
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Calcular el precio en dlares al consumidor final del producto de exportacin Patito cuyo costo es de $75.50 y la empresa exportadora desea ganar el 30% sobre la venta. El importador que es un mayorista en el extranjero, desea ganar el 15% sobre la venta y el detallista desea una utilidad del 20% tambin sobre el precio de venta

(1 point) Consider a linear system whose augmented matrix is 1 1 4 2 1 2 3 2 9 19 k 23 For what value of It will the system have no solutions? k=
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Ghiberti's Gates of Paradise use _____ to unify multiple events in one image. Group of answer choices heroic nudes polychromy linear perspective inscribed text

I want to make sure I am correct. When looking at the table S4 SMNKOA total score is B is the estimated regression coefficient: (SE) is standard error -1.72 (0.40) and 95% CI is lower and upper confidence -2.52, -0.92 on the P = value for overall test is < 0.01 So reliability is based on the SE -1.72 or is it the CI = -2.52, -0.92? Validity is

Can somebody please help me to solve the difficult questions below.. 1.How can you illustrate the following sequence 1/2[X(z)+X*(z*)]. Give an assumption. 2.Solve and illustrate your finding in the signal x(n)=(n-n 0 ). 3.Is it true that the round constant depends on the s-box values? 4.The operation through which the mix row functions operate on

Find the value of y. R B PROOF Write a two-column proof. Given: AB ~ CB, D is the midpoint of AC, LADB ~ LCDB, BD bisects ZABC Prove : AABD = ACBD A D C Statements Reasons
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Finals Review Packe... Bb 3 Using Midpoint F... G Play Gimkit! - Enter... Play Kahoot! - Enter... Bb Scanned Document untitled Boom Ca Find the area of the pink shaded region. Round your answer to the nearest hundredth 5 in 24 inches 30 inches
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Find the eigenvalues and associated values of the following matriceseigenvectors. Then determine whether the matrices are diagonally servable: \f
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A consumer advocacy group wants to determine whether there is a difference between the proportions of the two leading automobile models that need major repairs within two years of their purchase. A sample of 400 two-year owners of model 1 is contacted and a sample of 500 two-year owners of model 2 is contacted. 53 owners of model 1 reported that

..three kinds of soup, five main courses and two desserts. If a meal consists of one kind of soup, ...course, and one dessert, how many different meals are possible? ...writes the word problem shown on the board and asks the students to discuss the problem and explain how they would solve it. Which of the ...statements best describes the goal of

2. (1 + 4 + 2.5 + 2.5 pts) Let T : R2 - R3 be a linear transformation such that T ( [=] ) 6 (a) Write as a linear combination of and NA (b) Compute the standard matrix of T. (c) Is T one-to-one? Explain why or why not, with a computation if needed. (d) Is T onto R3? Explain why or why not, with a computation if needed. 5 -17 5 3. (3 + 3 + 4 pts)
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Solve for a using in the oblique triangle ABC; AB=30; AC=15; and angle B=20 degrees. Solve using the law of Sines. \f
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Questions 15-17 use the following information. Suppose you are a marine biologist studying a particular species of whales. The average length of this whale species is 60 feet and the standard deviation is 12 feet. The average length of whales in Normally distributed
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Significant and unusual or infrequently occurring items are recorded as: Group of answer choices Discrete items As part of the AETR Not considered until year end None of the above All of the above

this is the question (hours) 0 1 4 6 8 C'(t) 1 (100's calls/hour) ABZ. A large pizza chain delivers pizzas nightly from 6PM to 2AM. On a Friday nightthe rate that the pim chain receives calls for delivery is modeled by the differentiable function ("(0. measured in hundreds of calls per hour. and t is measured in hours since 6PM (t = 0). Selected
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(10%) Consider the dual formulation of the least-squares linear regression problem given on page 6 in the ppt of Kernel Methods. Show that the solution for the components a, of the vector a can be expressed as a linear combination of the elements of the vector o(x,). Denoting these coefficients by the vector w, show that the dual of the dual
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(5%) Determine si las variables "Valor de las inversiones" e "Ingreso del Hogar" presentan sesgo. En caso de que presenten sesgo, es ste negativo o positivo? Explique y concluya

Perms and Coms MATH 30-1 ALBERTA CURRICULUM Arrangements worksheet #4: How many different numbers between 300 and 4000 can be made from the digits 1, 3, 5, and 7, if no repetitions are allowed? (The answer says 30 but Im not sure how to get that answer)

10:32 ohm.lumenlearning.com Module 11 Exercises: Exponential Functions Score: 0.2/18 1/18 answered Progress saved Done . Question 1 0/1 pt 9 2-3 19 0 Details Score on last try: 0 of 1 pts. See Details for more. > Next question Get a similar question You can retry this question below Approximate e - to 4 decimal places. Approximate e2.98 to 4
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2. A surgical suction device has a large pump and a small pump. The small pump, working alone, takes 1.7 seconds longer to suction a wound than the large pump working alone. If both pumps are working, they can suction the wound in 2 seconds. Find the time it takes each individual pump to suction t wound. Use the quadratic formula to solve the
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Given the following matrices, which answer is correct: 2 1 0 A = 4 3 2 3 B = 1 B X A is not possible AXB =BX A 5 8 AXB -5 5 A X B is not possible
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Determine whether each geometric sequence is convergent or divergent.Find the sum when possible. 1/2 * (5)^n-1 n=1

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