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Mathematics Questions and Answers September 27, 2021

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Let x have a normal distribution with a mean of115.0and a standard deviation of6.11. The z value for x =126.62, rounded to two decimal places, is:

1. Let A and B be 3 X 3 real matrices that commute: AB 2 BA. If .35, is a real eigenvalue of A. let V}. be the real subspace of ail eigenvectors having this eigenvalue. {a} Show that if V). is one-dimensional, then ever}.r {nonzero} vector in IE LG, is also an eigenvector of B. possibly.r with a different eigenvalue. {b} ISiva an example showing
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1. The area of the region bounded by y = x and y = x is (4 points possible) A. B. D. O U W H C. E. 1
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a.Knowing that the number of sick leave days used per police officer per year in Normal, OK is 6.7, would you say that the Patrol Division 1 of the Police Department is abusing its sick leave? Explain. Number of days Number of police officers of sick leave taken Patrol Division 1 0-2 4 3-5 7 6-8 9-11 14 12-14 6
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Does a kilogram of feathers and a kilogram of pennies both have completely the same density. The only difference will be in volume even if the feather is crunched until the air comes out, they would still be seven times the volume of the iron

Susan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the

The propensity score is an estimate of the likelihood that any given individual would be in the treatment group, given a set of measured characteristics.What is the main limitation of the propensity score method as a balancing score?

The x axis on a graph is: Horizontal and is also called the data point Horizontal and is also called the abscissa Vertical and is also called the ordinate Vertical and is also called the behavior line

Usted ha decidido fabricar anillos para servilletas perforando agujeros de diferentes dimetros en dos bolas de madera (las cuales tambin tienen dimetros diferentes). Usted descubre que ambos anillos para las servilletas tienen la misma altura h, como se muestra en la figura siguiente: \f
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Please Show all work. Assume: \f
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Question 10.1 #3 Use the sign diagram for f'(x) to determine the following. (If an answer does not exist, enter DNE.) f' (x) - - - 0+ + + + + 0 - X (i (a) the critical values of f(x) (Enter your answers as a comma-separated list.) X = (b) intervals on which f(x) increases (Enter your answer using interval notation.) (c) intervals on which f(x)
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3. State the degrees of freedom between, degrees of freedom within, and degrees of freedom total and then using the Ftable at the end of vour textbook, state the critical region
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Casino Windsor conducts surveys to determine the opinions of its customers. Among other questions, respondents are asked the question 'what is your overall impression of Casino Windsor?'. The possible responses are: Excellent, Good, Average and Poor. Additionally, the gender of the respondent is also noted. After analysing the results, the
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This week you will take time to reflect on all that you have accomplished this term. Explain if your feelings about math and your experiences have changed. Do you feel the same way now as you did at the beginning of the class? What experiences in this class contributed to your current feelings? Please remember to keep it positive. If you had a

Need Help ASP An experiment was conducted in which two fair dice were thrown 100 times. The sum of the pips showing on the dice was then recorded. The frequency histogram to the right gives the results. Use the histogram to complete parts (a) through (e) Sum of Two Dice Frequency 20- 10- 6 8 10 12 Value of dice (d) How many more 4's were observed
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The closed question, as a response, requests: Answer A discussion on certain topics. Answer Information on a particular confined area of discussion. Answer A final response before discussion is closed. nswer A simple yes or no

suppose the revenue fromproducing and selling x units of a proiduct is given by R(x)=11x-.02x^2 dollars. (a) find the marginal revenue at production level of 35 (b)find the production levels where revenue is $500

The data is wrong. It should be as follows: Given that T([2 0 1])=T([3 0 0]) and T([2 1 2])=T([4 4 7]), then what is T([5 9 16])? Justify your

Solve one of the two prompts. Show work 7. [10] Solve one of the following two problems. If you work on both, you must choose only one to submit. Solve the inequality 51 - x2 1+2
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44) The following display from a TI84 Plus calculator presents the results of a hypothesis test for a population mean ,u. u
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A survey found that 31% of all teens buy soda (pop) at least once each week. Seven teens are randomly selected. The random variable represents the number of teens who buy soda (pop) at least once each week. What is the value of n? 0.07 x, the counter 7 0.31

A manufacturer considers his production process to be out of control when defects exceed 4.2%. In a random sample of 144 items, the defect rate is 8.6% but the manager claims that this is only a sample fluctuation and production is not really out of control. At the 5% level of significance, use the p-value method to test the manager's claim. Enter

A 95% confidence interval of 2.68 < 1 - 2 < 5.79 tells us that we can be ______. Group of answer choices 95% confident that the mean difference from the study represents a population of mean differences falling outside of 2.68 and 5.79 5% confident that the mean difference from the study represents a sample of mean differences falling between 2.68

uiz. Modul O QUIZ This Question: 1 pt 12 of 12 (11 complete) The scores on a psychology exam were normally distributed with a mean of 59 and a standard deviation of 4. A failing grade o deviations below the mean. What was the cutoff for a failing score? Approximately what percentage of the students failed? The cutoff for a failing score was

A revenue department is under orders to reduce the time small business owners spend filling out pension form ABC-5500. Previously the average time spent on the form was 5.2 hours. In order to test whether the time to fill out the form has been reduced, a sample of 60 small business owners who annually complete the form was randomly chosen, and

Please solve 12. [44.51 Points] BBUNDERSTAT127.4.D19. The US. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x1 be a random variable that represents the time interval (in minutes) between Old Faithful eruptions for the years 1948 to 1952. Based on 9160 observations, the
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To identify the non-linear system: y = (1+(x1)^0.5 + (x2)^-1 +(x3)^-1.5)^2 Assign two membership functions to each input variable. Training and testing data are sampled uniformly from the input ranges: Training data: [1, 6] [1, 6] [1, 6] Testing data: [1.5, 5.5] [1.5, 5.5] [1.5, 5.5] Extract Takagi-Sugeno fuzzy rules from the numerical

1) Graph the following functions and fill in the table below (write in N/A for anything that does not exist). For all inverses, write the logarithm equation. (24 marks) a) ?(?) = 0.5 ? d) ?-1 (?) = b) ?(?) = 0.5 ?+4 - 3 c) h(?) = 2log 2 ? e) ?-1 (?) = f) h-1 (? ) = Domain Range Asymptotes y-intercept x-intercept ? (x) ? (x ) ? (x) ?-1 (x ) ? -1
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Just trying to verify my answer, thanks. 9. (08.04 MC) A large emerald with a mass of 982.7 grams was recently discovered in a mine. If the density of the emerald is 2.76 grams cri 3 -. what is the volume? Round to the nearest hundredth when necessary and only enter numerical values, which can include a decimal point. (6 points)
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can some one help me with this pls 7. Vladimir decides to go on a trip to see his friend. He starts from his home and drives 200 miles in a straight direction until he comes to a place where he arrives at his friend's house. After he leaves his friend's house, he drives 100 more miles at an angle of 115, to visit a famous pie restaurant. He
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Suppose you fit a regression to predict Y using X and obtain the following equation:Y = 80 - 2X.Describe the effect of X on Y. A) As X increases by 1unit,Y is expected to increase by 2units. B) As Y increases by 1unit,X is expected to decrease by 2 units. C) As X increases by 1unit,Y is expected to decrease by 2units. D) As X increases by 1 unit,Y

Plz answer as quickly as you can 2. The figure shows the graph of y=3sin 2x . The point P is (47 -1) (3 51 -1) (a) ( 47 -3) ( b ) ( - (31 - 3) (d) (4 3 3. If tan 0 cos 0>0 , in which quadrant does 0 lie? (a) I or II (b) I or III (c) I or IV (d) II or IV 4. If 050
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Question 3 6.25 pts G Study this pattern for a quilt. The quilt panel is a regular hexagon. Points H, I, J. K, L, and M are the midpoints of FG, AG, BG, CG, DG, and EG, respectively. What facts would be sufficient to prove that the shaded triangles are all congruent? Select all that apply. Point G is equidistant from points A, B, C, D, E, and F. O
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A ball is dropped from the top of a building that is 15 m high. The position of the hall after t seconds is given by the equation 5 left parenthesis t right parenthesis equals negative 4.9 t squared plus 15. Find the instantaneous acceleration of the ball after t seconds
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from problem 22 to 28 we must arrive at the solution by the exact method 22. 2xy dx + (12 - x2) dy = 0. SOL. *2 + 12 = cy. 23. (xy2 + y - x) dx + x(xy + 1) dy =0. SOL. x2y2 + 2xy - x2 = c. 24. 3y(x2 - 1) dx + (x3 + 8y - 3x) dy = 0; cuando x = 0, y = 1. SOL. xy(x2 -3) = 4(1 - 12). 25. (1 - xy) -2 dx + [yz + x2(1 - xy)-2] dy = 0; cuando x = 2, y =
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Bianca: Hola, Lorenzo. Qu tal? Cmo te fue el primer ao de la universidad? Lorenzo: Me fue bastante bien, pero aument de peso un poco. Bianca: Eso es normal. Pasas tanto tiempo con tus estudios que no tienes tiempo para hacer ejercicio. Lorenzo: Es verdad. Casi nunca fui al gimnasio y tampoco segu una dieta saludable. Bianca: Pues, yo tambin

Find the velocity, acceleration, and speed of a particle with the given position function. r ( t ) = e t (cos( t ) i + sin( t ) j +4 t k ) v ( t )= a ( t )= | v ( t )|=

Task 2: Rate of Change Models in Microbiology Investigate While many real life situations can be modeled fairly well by polynomial functions, there are also many scenarios that are best modeled by other types of functions, including exponential. logarithmic, and trigonometric functions.. Often the rate of change at various times is more important
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Nancy is inspired by Sam and decides to do the same thing the next day at the book show. However, she decides to sneak past 4 people each time the author signs an autograph. If she receives an autograph after 16 people, how many people were in front of her in the beginning? Mention all possible solutions

Complete two iterations of the steepest-descent method for minimizing a function starting from the given design point. Show all steps f(x 1 x 2 ) = x 2 1 + 4x 2 2 - 8x 1 - x 1 x 2 ; starting design ponit (1,1)

9 . ( 10 points ) You are playing a gambling game with a 10 - sided die If you roll an odd number then you lose $3 If you roll an even number , then you win that amount in dollars ( L. e . , you roll a 2 , you win $2 , etc ) . What is the Expected average winnings losings of this game ? * = die roll P ( x ) Payoff ( x ) P ( x ) * Payoff ( x ) 10
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Draw the region of a Venn Diagram that represents the following : \f
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A3 2015 Dec. 31 Depreciation Expense 24 760 Accumulated Depreciation Building 9 573 Accumulated Depreciation Machinery 13 367 Accumulated Depreciation Office Equipment 1 820 To record annual depreciation. Building depreciation = $307 200 20 000 = $287 200/30 $9 573 Machine 1 = $28 800 $3000 = $25 800/6 $4 300 Machine 2 = $28 800 $3000 = $25 800/9
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Please I need help again I can't seem to get away from this problem (a In each part of the problem, a pair of similar triangles is shown. Find the measure of the segment marked with the letter a, b, c, or d 6 a 9 36 (b) 18 12 (a) a= (b) b =
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Which coefficients are significant at the 95% level? \f
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Citizens in a __________ city can use the power of the initiative

4.A particular state knows that its officers can run a mile in = 7 minutes, and they want to improve this overall running performance of the force.You are the chief statistician for the state-attorney's general office, and you have been asked to check to see if new recruits hired under a new standard can run faster than the uniformed officers.You

3. The regular price of a gold ring was $290, which included a 45% markup on cost. During a holiday sale, the ring was marked down so that the sale price produced a 25% gross profit on sales. a. What was the cost of the ring? b. What was the sale price?\f
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Question 22 2 pt . Please refer to my picture on page 5 of notes on histogram (I think Example 2.2) . In a frequency density histogram, total area is always n, total number of observations. True or False [ Select ] . Read my answer to part (f). By knowing density in percent, we can estimate percentage of data for a part of a class. In this part,
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2. A researcher wishes to determine if the college students with a "B or Better" average have attained more flying hours by the end of their first semester of college than those that have a "Below B" average at the end of the first semester. The researcher surveyed 20 college students who are also student pilots and recorded their flight hours as

Suppose x has a distribution with a mean of 80 and a standard deviation of 36. Random samples of size n = 64 are drawn. (a) Describe the x bar distribution. x has an approximately normal distribution. x has an unknown distribution. x has a geometric distribution. x has a Poisson distribution. x has a normal distribution. x has a binomial

2 The Problem I want you to design an optical system that has an effective focal length between 100 and 300 mm. You should pick the focal length, and it should not be an integer value. The front principal plane should be to the right of the last element, and the rear principal plane should be to the left of the first element. You will start with
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Can someone please help me with #4 and #5 of the graphing quadratics using -b/2a assignment? 4) Graph y = -x2+ 4x - 9 . Using the - method, first find the x value of the vertex then fill in the table. b 2a y = -7 1 2 +4x - 9 -2 -1 1 2 3 4 5 6 7 8 Vertex: Y-intercept: # of x-intercepts: Axis of Symmetry (AOS): Parabola opens The vertex is a Range:
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Suppose that a particular business process involves 5 activities that must be done sequentially as follows (and with each done by a separate worker): What is the capacity of the above process?? (Hint: Watch out for your units !!!!) Question 33 options: a) 3 minutes/unit b) 6 units/hour c) 10 minutes/unit d) 20 units/hour e) 33 minutes/unit

u pasa? Primero, complete las oraciones con la forma correcta de almorzar, pedir, perder y volver. Luego, empareje cada oracin con la imagen correspondiente. middle-aged heavy-set man in blue shirts and short tie has hand to mouth & frowns. He carries a leash. a Older man with white hair approaches red front door of house. Flowers & plants next to

During the Fall semester of 1999 at Penn State University, one brave researcher defied conventional wisdom and asked a sample of college women how much they weighed. Actual weights (in pounds) were reported by 119 women (n = 119). The researcher also asked each woman, "What is your ideal weight?" The data set idealwt.jasp includes these

Please help Jacob conjectured that fruit trees must be at least four years old to bear fruit. A counterexample to this statement is Select one: O a. Sky's four year old cherry tree has more fruit than her six year old cherry tree. O b. Melle knows of a sixty year old orange tree that still produces oranges. O c. Anna owns a one year old lemon
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4. With your topic and model in mind, identify and then justify your chosen research methodology (i.e., qualitative versus quantitative, but also experiments versus questionnaires)
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please i need an explantion to understand this problem thank you "Two events that have no outcomes in common are said to be events." + Drag and drop your files or click to browse
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Identify mZEFH. F(8x + 8) 0 0 76 (3X - 3) G H O mLEFH = 100
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1 options: Write the numbers. Do not write any letters on your answer. EXAMPLE: Cuarenta y dos -- Answer: 42 once

find the values of a and b. decreasing (a, infinity) increasing (-infinity, b) ion f ( a ) 3x 6 + 14
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Consider an election in which the votes were cast according to the table on the right. Complete parts(a) and(b) below. A table displays candidates alongside the number of votes as a percent. The following data is displayed where the candidate is listed first and the number of votes is listed second: Borowski; 44% ,Callow; 37% , and Edelson; 19%

Write the negation, contrapositive, converse, and inverse for the following statement. (Assume that all variables represent fixed quantities or entities, as appropriate.) If x is nonnegative, then x is positive or x is 0. (a) Negation If x is not positive and x is not 0, then x is not nonnegative. If x is positive or x is 0, then x is nonnegative.

A recent college graduate borrows50000 50000dollars at an (annual) interest rate of7.5 7.5per cent. Anticipating steady salary increases, the buyer expects to make payments at a monthly rate of625(1+ A recent college graduate borrows 50000 dollars at an (annual) interest rate of 7.5 per cent. Anticipating steady salary increases, the buyer expects
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The aim of this assignment is to give you experience using the sampling distribution of the mean. Directions: Answer the following questions using the information given in the following paragraph. Using data from the 2000 Decennial Census you find that the average age of the US population in 2000 was 35.79 years, with a population standard

Find the transform function for the following 2y +y' = u'(t) y/2 = u(t) + y'' +u'(t)

Which section of a traditional research journal article would you anticipate finding the following information? Data Analysis Frequency distributions and bivariate analyses with X2 tests were used to organize and summarize the data. Logistic regressions were performed to compare the pain interventions received by nursing home residents with and

##Xfper ## 10 117.33 ## 22 31 20.67 ## 34 45 30.00 ## 46 30 20.00 ## 58 25 16.67 ## 6 1085.33 What is the 25 th percentile of the variable X? Calculate the mean of variable X. Explain why this is the best estimator of variable X. What is the mode of variable X? What is the mode of variable X? Calculate the variance of variable X. Calculate the

2. (9.0 points) (a) Consider sampling students from the audience of a comedy show at UC Berkeley. The theater, which is currently at full capacity, is divided into three sections: Front, Middle, and Back. The following table contains the capacity of each section: Section Capacity Front 20 Middle 35 Back 25 In the first two subparts of this
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ALL CALCULATIONS SHOULD BE PERFORMED USING SPSS X Y Number of Absences Student overall average at the end of the semester 0 88 4 89 1 91 5 55 3 75 0 98 2 90 7 61 5 71 1 96 10 100 8 55 3 82 2 93 4 85 5 62 1 94 6 68 3 86 2 95 1. Looking at the data (not calculating anything yet!), would you expect a positive or negative correlation between the

39) If an aircraft has washout designed into its wings, the angle of incidence at the wing tip is than that at the wing root. Therefore, the section of wing near the wing root will stall and the on the outside of the wing will remain effective longer. a) greater, earlier, flaps in) less, later, rudder c} greater, late, elevator d) less, earlier,
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A carton contains 24 light bulbs, 3 of which are defective. What is the probability that, if a sample of 6 is chosen at random from the carton of bulbs, 1 will be defective?

21 Question 21 Next
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2. Review the various ways in which a union can be recognized/certified as representing employees. For the purpose of full marks please ensure that you utilize examples when drafting your answers
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What is the equation of the image of y=x^2 after it has had the following transformations applied: Reflection in the x-axis Vertical Expansion by a factor of 4 Vertical Compression by a factor of 1/2 Horizontal translation 3 units right Vertical Translation 1 unit down Maximum of 5 Horizontal translation 4 units left

If the inequality in sample sizes was planned or reflects actual differences in the population, one should use a(n) _____. Multiple choice question. weighted means analysis unweighted variance analysis weighted variance analysis unweighted means analysis

Just the highlighted problems and all of the work thank u so much Solve using the square roots method. Write all answers in simplest form. 13. (x - 1) 2 =-16 14. (x + 4) 2 =-90 Nan Top 15 . (x + 9)2 =-24 16. (x-5)2= 108 17. -3(x+ 2)2 = 24 18. 5(x-3)2 =-225 9 . = ( x - 7 ) 2 = -28 -2(x + 1) 2 = 30
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I need help please with this question. Answer it on paper please. \f
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Given the function graphed below, evaluate the definite integrals. fa) di
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The percent of fat calories that a person consumes each day is normally distributed with a mean of about 37 and a standard deviation of about ten. For the group of 9, find the probability that the average percent of fat calories consumed is more than seven. (Round your answer to four decimal places.)

7/10 Given the dimensions of the rectangular lot below, find the set of values of x x that will make the perimeter of the lot greater than 20 m. Select your answer. ( 2 , 1.59 ) ( 1.19 , 1 ) ( 2 , 1.59 ) ( 1.19 , 1 ) ( 1.19 , 1 ) ( 1.19 , 1 ) ( , 1.59 ) ( 1.19 , ) ( , 1.59 ) ( 1.19 , ) ( 2 , 1.59 ) ( 2 , 1.59 )

How would you say that each of these activities are just as interesting as the other? Observar puestas de sol es _____ interesante ______ bucear. Responses a. ms ... que a. ms ... que b. menos ... que b. menos ... que c. tan ... que c. tan ... que d. tan ... como

Phi squared is computed when the contingency table is a ______. Group of answer choices 2 2 4 3 3 3 the 2 test for independence is significant

Please help me my homework. The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 minutes. What is the probability that a flight is between 125 and 140 minutes?

1. Find x if 2log, 5 + -log, 9- log, 3 = log. I 2. Solve log,(x -2) + log, (x +3) = log, 14. 3. Solve logo(x +4) + logo(x -2) = log.(4x) 4. Solve the following exponential functions for x a) 42x-1 = 3x+2 b) 72x-3 = 2-3x 5. Evaluate each of the following logarithms. a) log2 32 b) log3 (7) 16. Suppose you invest $1000 in an account that pays 6%
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6. With the current Covid crisis, please discuss at least 3 financial issues that this company should be concerned about and suggestions to the board on how to address these issues. Is this an industry that has seen increased or decreased sales due to Covid
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why are so many people getting scammed by Crypto investment in 2024

pleaseanswer with if you agree or disagree and why and if you can explain this better This week I found a data set on the Adolescent birth rate of women aged 15-19 from 2002-2013 in the Bahamas. I found this data set interesting because I was able to see that from 2002 to 2013 there was a slight decline in the adolescent birth rate in the Bahamas.

Fill in the Z scores for each category and round two decimal places you have to figure out the "z scores" This was the table displayed Category Mean for category score STDEV z score Ford 541 50 ? Category Mean for category score STDEV Z score Chevy 900 130 541 ? -also who had the better relative position? Ford Chevy or both had the same relative

Suppose an independent random sample of 15 stock funds gives a mean annual expense of 1.75 percent with a standard deviation of .25 percent, and an independent random sample of 12 municipal bond funds gives a mean annual expense of 0.75 percent with a standard deviation of .25 percent. Let 1 be the mean annual expense for stock funds, and let 2 be

Let Y be a random variable. Consider the following hypothesis test: Upper H 0 : Upper E left parenthesis Upper Y right parenthesis equals mu Subscript Upper Y comma 0 Upper H 1 : Upper E left parenthesis Upper Y right parenthesis not equals mu Subscript Upper Y comma 0 Where Upper H 0 is the null hypothesis and Upper H 1 is the alternative

If n = 480 and p p^ (p-hat) = 0.85, construct a 95% confidence interval. Give your answers to three decimals

2 E] 4 = 6 V4 9 Create inside Create inside o[ of the 10,000 random points in 2D space. Count the number of points that are of a circle with a radius of 1. Print this value. 10,000 random points in 3D space. Counter the number of points that are of a sphere with a radius of 1. Print this value. this process for higher dimensions. Print the number
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3 Find the distance between 1 and L on the . number line below . Distance : -12-11-10-9-8-7-6-5-43-2-1 0 9 0
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1. Let xn= sin(n/6). Give the formula for a selection nk , such that the subsequence (xnk)k is a constant sequence, with the constant, different to 0? 2. Let xn be the sequence whose terms are, in order: 1,2,3,4,2,3,4,5,3,4,5,6,4,5,6,7,5,6,7,8,... Determine whether each of the following is a subsequence of (xn). 1,2,3,4,5,6,...

Select the correct answer. Which food handler is avoiding cross-contamination while prepping? A. Gwen leaves frozen turkey on a prep table to thaw and then checks on it the next day. B. Daniel uses a slicer to cut beef brisket and then wipes the slicer clean using a wiping cloth. C. Miguel cuts up melons and then holds them at a temperature of 60

A 37 years old father whose weight is 67 Kg and height is 170 centimeter tall brought his son who is supposed to be 100 cm tall and 15.6kg in weight to the nutrition clinic. On measurement, the boy had 100 cm height and 12 kg weight. What is the weight for height of the child? Select one: a. 77% b. 23% c. 30% d. 130%

31.The following random sample of 10 was chosen from a population: 2, 2, 6, 7, 7, 13, 13, 13, 14, 21 Calculate the Mean, Median and Mode A.Mean: 9.8 Median: 10 Mode: 13 D. Mean: 9.8 Median: 5.5 Mode: 13 B.Mean: 10 Median: 10 Mode: 13 C. Mean: 9.8 Median: 10 Mode: 7 32.A manufacturing company regularly conducts quality control checks at specified

Hello Alpha! Could you please write me a critque and improvement suggestions for this fellow student of mine: STRUCTURED INPUT ACTIVITY Teacher Instructions Hand the students the following worksheet after explaning the general vs. specific function of the articles indefinite article "a/an" and the definite article "the". When each students has the

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