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Mathematics Questions and Answers March 20, 2021

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Let P(t)equals (x,y) be the terminal point on the unit circle that corresponds to the real number t. Find the values of secant t comma cosecant t comma and cotangent t . Upper P equals left parenthesis one half comma negative StartFraction StartRoot 3 EndRoot Over 2 EndFraction right parenthesis

why is it important to draw the graph of the region when defining and calculating the area of the region between the graphs of two continuous functions?

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1. Graph the following transformed function, and state the domain and range. [ 6 marks ] f (x) = 2V3-x-2
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Can you please help me answer this question? Miles per gallon of a vehicle is a random variable with auniform distribution from 25 to35. The probability that a random vehicle gets between 27and 34miles per gallon is

I need help with this question as i am confused. A researcher claims that more than 50% of all adults will get tears when they chop onions. To test this theory, a sample of 50 randomly chosen adults is gathered and each tasked with chopping onions. 28 in the sample did actually get tears in their eyes from chopping onion. At the 50% significance

The mean score on a college placement exam is 500 with a standard deviation of 100. 1. What is the 96th percentile score?(Round it to a whole number)Answer format: ### 2. Ninety-five percent of the test takers score above what?(Round it to a whole number) Answer format: ### 3. What percentage test takers exceeded the score of 664?(in 2 decimal

Find a polynomial f(x) of the degree 5 that has the following zeros 5, 7 (multiplicity 2), -4,0 Leave your answer in factored form. = fx

calculations. Use the calculator to che + 1323' 9. 90 - 2718

Una circunscripcin o un electorado es: una o ms partes cuyos intereses, demandas o prioridades estn siendo representados por el negociador focal en la mesa. un negociador que representa los intereses de otra parte. cualquier individuo o grupo de personas que no estn directamente involucradas o afectadas por una negociacin, pero que tienen la

1) A researcher has developed an intervention he believes will cause people to spend more time exercising. He plans to collect data on a sample of 35 adults, recording how many minutes per week they spent exercising before and after the intervention, and to conduct a one-tailed t -test for matched samples. What are the null and research hypotheses

Solve for k. Solve for K. O k = 12VJ O k = = 2VJ O k = 14J O k = LAVJ
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Agues Lindas de GOiss Min Max Median Q1 105,58 182,25 159 13 132360. 170694
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Problem 1 (Span). 1. Show that (1,2),(3,4) span R2, 2. Show that (1,2,0),(3,4,1) do not span R3. Problem 2 (Linear Independence). 1. Show that (1,2),(3,4) are linearly independent. 2. Show that (1,2),(3,4), (5,6) are not linearly independent (i.e., linearly dependent)
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A20 20-sided fair die is rolled for a game, and the sides are numbered1 1through20 20. What is the probability of rolling a multiple of9 9or an even number? a)11 20 b)1 10 c)1 5 d)1 2

A one-way ANOVA was conducted and the researcher tested the assumption of homogeneity of variances. How can the researcher test this assumption?

Use the following information to answer questions 27 -31. It shows orders delivered per month for 10 months. Orders Month Delivered Jan. 120 Feb. 90 March 100 April 75 May 110 June 50 July 75 Aug. 130 Sep. 111 Oct. 98
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When computing a chi-square test of independence one compares _________________ to ____________________. Sample means, population means Sample Variances, population variances Expected frequencies, observed frequencies Sample statistics; population parameters

A radio station runs a promotion at an auto show with a money box with 10 $100 tickets, 10 $50 tickets, and 13 $25 tickets. The box contains an additional 20 "dummy" tickets with no value. Three tickets are randomly drawn. Find the probability that all three tickets have no value.

question 3 QUESTION 3 (5 marks) One of the objectives in one of the group projects of students is to see whether there is a signicant difference in the price of the food sold by two cafeterias on their campus. They selected a few similar menus from both cafes, and the everyday menu price was recorded and analyzed using SPSS. Independent Samples
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a matrix such that its row space is spanned by(1,-1), and it left null space is spanned by(-2,1,0),(1,1,1) lu factorization

In Connecticut households use gas, fuel oil, or electricity as a heating source.Table #2.1.7 shows the percentage of households that use one of these as their principle heating sources ("Electricity usage," 2013), ("Fuel oil usage," 2013), ("Gas usage," 2013). Create a bar chart and pie chart of these data. State any findings you see from the

(a) Evaluate the double integral /f (x2+ 6y) da, where d is bounded by y=x, y=x3, and x> 0. d (1,1 (10 marks)
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Solve the following triangle. Aequals 42degrees, Bequals 34degrees, aequals 104 meters Question content area bottom Part 1 Cequals enter your response heredegrees (Simplify your answer.) Part 2 balmost equals enter your response here meters (Round to the nearest tenth as needed.) Part 3 calmost equals enter your response here meters (Round to the

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HELP HOW DO I SEARCH FOR A FILE BASED ON ITS NAME AND HOW RECENTLY IT WAS UPLOADED EMPHASIS ON THE WHEN IT WAS UPLOADED ON COURSEHERO LIKE HELP

What is the ampacity of each of twenty 10-AWG THW conductors in a conduit nipple that is 20 inches long? This question is not asking for the maximum overcurrent device, but simply for the ampacity

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Word problems can be tricky! Generally, the most difficult part is turning the words into mathematical symbols. Think about a time where you turned a situation (i.e., a problem) into an equation with one variable. Describe the problem and the resulting equation. What does the variable represent? Describe how you were able to convert the words into

X 1 - one quantitative independent variables X 2 and X 3 - two dummy variables used to describe a qualitative variable with 3 levels X 4 - a dummy variable used to describe a qualitative variable with 2 levels. how would I go about building the 2nd order model?

Let X~ N(, ) a. Use the properties of moment generating functions to show that aX+b ~ N(a +b, a). b. Use the cdf method to show that aX+b ~ N(a +b, a).

how do i get to the shift map from the doubling map. do i have to extablish a homeomorphism or can i just convert the interval to binary and let be obvious to the reader that doubling in base ten => shifting in binary map

You are 19 years old today. You want to have $381,507.06 in an investment account when you are 60 years old. You will start with an initial deposit in one year from now and grow it by 3% per year for a total of 15 investments. How much is the amount of that initial deposit? Assume an interest rate (a.k.a. return on your investment of 6%. Use the $

can someone please check my answers which next to the problem Sample proportions can use the central limit theorem to allow a approximate normal estimation with Mu phat= pandsigma phat= sqrt(p * (1-p) /n)ifnp>= 10and n(1-p) >= 10 For the following values of n and p specify if they can use the approximately normal conditiion n = 20 p = 0.300 = YES

Rounding off the number 32.68673 to 4 significant digits, we get a number - - - - a) 32.68 b) 32.69 c) 32.67 d) 32.686

Customers at Bell's Big & Betty Bar-B-Q consume an average of 29.2 gallons or barbeque sauce each week with standard deviation 6.5 of. Answer questions (1) and (2) both using the Z Table and using the calculator. Find P80, the 80th percentile value. Describe the 80% of the distribution that is closest to the mean.

Pregunta 3 Sin responder an Puntaje de 1.0 Calcula la moda de los datos agrupados de la siguiente tabla: Pregunta 3Respuesta 175.75. 166.75 167.5 166

Please explain as well Explain how to the find the least common multiple of x2- 10x + 25 and x 2 - 14x + 45
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You have two upcoming work trips. For the first trip, you will cover 846 miles in 3.5 days. For the second trip, you will cover 322.5 miles in 6 days. How many miles per day will you travel on average during each trip

Figure 21-1 A graph of Books versus C Dees shows a budget line, decreasing linearly from Point B on Books to Point D on C Dees. Point A is an interior point relative to the line. Point E is beyond the line, to the northeast. Point C lies on the line. Point D is at 20 C Dees. Refer to Figure 21-1. If the consumer's income is $140, then what is the

1. As voltage increases, current increases / decreases 2. As resistance increases. current increases / decreases
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VOVABULARY USED FOR ORAL COMMUNICATION IS COMPRISED OF _____________ AND _____________

in Related Measures ANOVA the MSerror a.none of the answers are correct b.is the denominator, and does NOT Include individual difference variation c.is the denominator and does include individual difference variation d.is MSbetweengroups + MSwithin groups

An advertising executive wants to estimate the mean weekly amount of time consumers spend watching television daily. Based on previous studies, the standard deviation is assumed to be 20 minutes. The executive wants to estimate, with 99% confidence, the mean weekly amount of time to within 5 minutes. a. What sample size is needed? b. If 95%

Question7 Why do people prefer to use statistics in decision making rather than using the intuition or just making decisions without?

PLEASE HELP CASE 4 Left wheel is a game table with the following prizes and probabilities: Target in the table 1 2 3 1 Payoff money - $3 + $1 + $3 Probability 3/6 2/6 1/6 3 35. If you want to make a profit for a game, what would be the price for a 2 game you can pay for a game? Show your work. 36. What would be the variance for this game? Show
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CardioGood Fitness CardioGood Fitness is a developer of high-quality cardiovascular exercise equipment. Its products include treadmills, fitness bikes, elliptical machines, and e-glides. CardioGood Fitness looks to increase the sales of its treadmill products and has hired The AdRight Agency, a small advertising firm, to create and implement an
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Sam is self-employed and operates her business from the 205-square-foot den in her 2,500-square-foot home. Her home has a total of eight rooms, of which the den is one. Sam has eligible home expenses that total $18,000. Using the floor space option, calculate Sam's allowable deduction she can claim for her home office workspace. Please round your

Thomas is available on Monday and Tuesday from 10:30 AM to 2:30 PM. . Samir is available on Tuesday and Wednesday from 11:30 AM to 3:30 PM. . Whitney is available on Monday, Tuesday, and Wednesday from 1:00 PM to 5:00 PM. When are all three people available for a 30-minute meeting? Select all that apply. Monday at 1:00 PM Tuesday at 11:30 AM

Please show steps and explain Question 1 10 pts 1. Find the intervals where each function is concave up or concave down. Work must be shown to credit. earn credit. Meaning answers obtained by looking at the graph in the calculator will not earn V= - a. x+1 b. Y=-x- -8x-13 BIUA . A . LBEGGEXXFE Paragraph 28 VX . 1 12pt O words
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The equation W = 3.51L - 192 expresses the relationship between the length L (infeet) and the weight W (in tons) of adult blue whales. What is the expected weight of an 80-foot blue whale?

Prove that for every natural number , 1 + 4 + 7 + + (3 2) = (31)/2 Prove that for every natural number , 1/12 + 1/23 + 1/34 + + 1/(+1) = /+1 Use the Binomial Theorem to find the first three terms in the expansion of (1 1/ )^15 Find the coefficient of 6 in the expansion of ( + 2)^10

Polynomials: a. Expand the following binomial using the pascal 's triangle: 3 4 (3x y ) b. Divide the following using both long and synthetic division methods: (26 1)+(z+ 1)
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X is a uniform random variable with parameters= 50 and []^2 = 25. Calculate P(45 < X < 60). Answer in terms of the cdf (z) of the standard normal random variable Z and z > 0. Then use a table of values to calculate the probability.

A company that sells annuities must base the annual payout on the probability distribution of the length of life of the participants in the plan. Suppose the probability distribution of the lifetimes of the participants is approximately a normal distribution with a mean of 68 years and a standard deviation of 3.5 years. Find the age at which

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For each set below, determine if the proposed operation on the set G is a binary operation. If not, explain if the operation isn't well-defined, if it's undefined, or if it's not closed. G is the set of dyadic rationals; a * b = a + b

1. Solve the following radical equation. [ 4 marks ] Vx +8 = Vx - 4
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If initially there are 300 g of radioactive substance and after 5yr there are 200 g remaining, how much time must elapse before only 10 g remain

A New York student, Alma, scored 135 points on her standardized state test that had a mean score of 115 and a standard deviation of 10. A Kansas student, Peter, scored 112 points on his standardized state test that had a mean score of 94 and a standard deviation of 6. A New Mexico student, Grace, scored 173 points on her standardized state test

You select a sample of seven cities and find number of days that these cities failed to meet acceptable air quality standards. The results were given below. Can we conclude that after a year, there is no improvement in the quality? Use =0.15. City 1 2 3 4 5 6 7 Year 1 18 50 9 22 30 29 1 Year 2 24 77 13 21 44 23 6 provide null and alternative

In how many ways can you arrange the letters in the word GRAMMATICAL ?

Linear Algebra: Use Cramer's Rule Use Cramer's rule to compute the solution of the system. 4X1 + 2X, + 3X3 = 6 - 2x1 + 2X3 = 2 8x1 + 3X2 = 4 ; X2 = [; X3= (Type integers or simplified fractions.)
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In2014 , the CDC estimated that the mean height for adult women in the U.S. was64 inches with a standard deviation of4 inches. SupposeX , height in inches of adult women, follows a normal distribution. Which of the following gives the probability that a randomly selected woman has a height of greater than68 inches?

Question 1 There is some indication that mean daily car rental rates may be higher for Sydney than for Gold Coast. Suppose a survey of eight car rental companies in Sydney and nine car rental companies in Gold Coast is taken and the resulting data are shown below. Sydney:4544464744474960 Gold Coast:534849445241454365 Test the hypothesis that the

3 Conversacin Complete the conversation with appropriate questions. Question 1 with 6 blanks DAVID: Buenos das, Claudia. 1 of 6 CLAUDIA: Hola, David. Busco un libro de matemticas. DAVID: 2 of 6 CLAUDIA: El libro se llama El universo de las matemticas. DAVID: 3 of 6 CLAUDIA: Busco el libro porque necesito estudiar para (for) una prueba. DAVID: 4 of

Suppose, as a rough estimate, we say that there are 20 distinct geons used for object recognition; and each geon can come in 5 classifiable qualitative sizes (tiny, small, moderate, large, huge); and a pair of geons can be placed in 10 distinct qualitative relations (geon A on top of geon B; geon A to upper left of geon B; geon A to the left of

1. Use the characteristics of the given function to graph the function and it's reciprocal on the same set of axes, either using online graphing technology or by hand. Explain your thinking process. [K6] [C2] f(x) = - x2+ 7x - 6
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Please provide an explanation for each part as much as you can. Recommend to Gadgego an order quantity and reorder point for the One-tool- caker based on a continuous review system for year 1. (30 marks} For results in Part 1, provide an explanation for the method used to calculate the z-score. Is the safety stock level adequate? Why or why not?
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3) If a normal distribution has a mean of 35 and a standard deviation of 10, then 3) A) the median is 35 and the mode is 45. B) the median is 35 and the mode is 35. C) the median is 25 and the mode is 45. D) the median is 45 and the mode is 25
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where people turn for news is different for various age groups. a study indicated where different age groups primarily get their news: age group media under 36 36 - 50 50 and above local tv 107 119 133 national tv 73 102 127 radio 75 97 109 local newspaper 52 79 107 internet 95 83 76 at the 0.05 level of significance, is there evidence of a

Find the critical values for a 95 % confidence interval using the chi-square distribution with12 degrees of freedom. Round the answers to three decimal places.

The given family of functions is the general solution of the differential equation on the indicated interval. Find a member of the far y = cje* + cze-, (-00, 00); y" - y = 0, y(0) = 0, y'(0) = 3 y =
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Suppose a population is known to be normally distributed with a mean, , equal to 116 and a standard deviation, , equal to 14. Approximately what percent of the population would be between 88 and 144?

1.An experiment is rolling two fair dice. (a) List all possible outcomes of the experiment as ordered pairs.(Hint: S= {(1, 1), (1, 2), (1, 3)... (6, 5) (6, 6)}) (b) Find the probability that both dice show numbers greater than 3. (c)Find the probability of getting a sum of 6 and the second die is 5.

(03.02 MC) The ABC Toy Company is creating two similar pieces for a board game, as shown below. How could the toy maker confirm that the pieces are similar using the definition of similarity in terms of similarity transformations? J Verify 4G a J and 4| 2 4L by reflection. Verify @ a JK and El e I by reflection. OVerify LG 5 4J and 'l a 4L by
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Discuss in detail how the emergence of Six Sigma has influenced the production process in some industries.

lesson 24 review directions : find the missing right triangles. part A a=4 b=? c=10 bartleby

How long does it take for light from the sun to reach the earth? 9.1. Einstein's dream a) approximately 48 minutes b) almost instantaneously c) approximately 8 seconds d) approximately 8 minutes

Use identities to write the following expression as a function of w alone. sine left parenthesis StartFraction pi Over 2 EndFraction plus w right parenthesis Question content area bottom Part 1 Choose the correct expression below. A.negative cosine w negative cosine w B.sine w sine w C.cosine w cosine w D.negative sine w negative sine w

In 2013, Gallup conducted a poll and found a 95% confidence interval of the proportion of Americans who believe it is the government's responsibility for health care.Give the statistical interpretation. ( 8.1.8)

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6.In a study of what causes rates of promotion of minority police officers to vary in different police departments, the unit of analysis would be a.individuals b.racial/ethnic groups c.organizations d.promotions

A population is normal with a variance of 16.Suppose you wish to estimate the population mean m .Find the sample size needed to assure with 95% confidence that the sample mean will not differ from the population mean by more than2 units.

Examine the diagram and information to answer the question. A circle in the coordinate plane has a radius of 5 and a center at point (5,4). Point (x,y) lies on the circle. The triangle formed by points (5,4), (5,y) and (x,y) is a right triangle. Circle as described in the text. 2019 StrongMind. Created using GeoGebra. What is the equation of the

Simplify the following radical expression. cube root of 27 x cubed end root 3 x 9 x cubed 3 x cubed 9 x

132310 at \"?'I1.II'.'II2% O i work1.cc.uregina.ca webwork / 202310-math122001-002 / assignment8 / 2 Previous Problem Problem List Next Problem Assignment8: Problem 2 (1 point) Find the equation of the plane through the point (2, 4, 3) that is perpendicular to the line x(t) : (2i l 2j -l- 2k) l t(i l 5j 2k). Write the equation in the form
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A recent news story reported the following information about a sample of workers in Germany and in the United States. United StatesGermany Average length of work week ( in hours ) 4238 Sample Standard Deviation 56 Sample Size2328 At a 5% level of significance, test to see if there is a significant difference in the average work week between

Use the given data to construct a 95 % confidence interval for the population proportion p .= x ,52 = n 71 \f
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9. Graph the derivative of each function below. 10. Use the figure to fill in the blanks in the following statements about the function g at the point B. (a) 9() = (b) '() = (1.95,5.02) g9(x) (2,5) Tangent line
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as buying a home, investing in stocks, or comparing prices of goods. Math is also used in measuring time, distance, and speed, which is essential for transportation, communication, and navigation.Read the problem carefully: Before you start solving the problem, make sure you understand what it's asking. Read the problem carefully and make a note
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For the following example, what is the value of the conjunction pq? p: There are 50 states in the USA q: The sun is hot

Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p , the margin of error, and the confidence interval. Assume the results come from a random sample. A 95% confidence interval for p given thatp^=0.35 andn=525 . Round your answer for the best point

Which of the following is an example of an inner product space? Question 1Select one: The set of real numbers with the usual addition and multiplication The set of rational numbers with the usual addition and multiplication The set of continuous functions on a closed interval [a, b] with the L^1 norm The set of integers with the usual addition and

A researcher who hopes to obtain statistically significant results would prefer: Question 4 options: A) Large differences in scores between levels of the factor or independent variable B) Large differences in scores within levels of the factor or independent variable C) Both A and B D) Neither A nor B

Selecciona la opcin que demuestra el uso correcto de las letras maysculas. A Juan Ramn Jimnez se le concedi el Premio nobel en el 1956 y muri en Puerto Rico en el 1958. a Juan Ramn Jimnez se le concedi el premio Nobel en el 1956 y muri en Puerto Rico en el 1958. a Juan Ramn Jimnez se le concedi el premio nobel en el 1956 y muri en Puerto Rico en

USE INFO IN QUESTION 1 AND/OR 2 TO ANSWER 3 AND 4. 1. The most modern induction fan set in the market is the World IPTV Fan. Walmart and eBay are currently selling out of them. However, World IPTV Fan is saddled by Inventory. For the reason that their product has a short life cycle, they every so often write off a large segment of their inventory

show your work and solve the word problem. eddy is herding cows on the ranch. He has 6 animal stall. Each stall will hold 10 cows. How many cows must eddy herd?

With a single-server model, increasing the arrival rate by 10 percent and also increasing the service rate by 10 percent will result in: a. an increase in both the average number of customers in the system, and the average wait time. b. a decrease in both the average number of customers in the system, and the average wait time. c. no change in the

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