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Mathematics Questions and Answers November 03, 2021

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A December 2010 survey asked 500 randomly sampled Los Angeles residents which shipping carrier they prefer to use for shipping holiday gifts. The table below shows the distribution of responses by age group as well as the expected counts for each cell (shown in parentheses). (d) How many degrees of freedom are there?

At first a runner jogs at 5 mph and then jogs at 8 mph traveling 7 miles in 1.1 hours. How long does the runner jog at each speed. (Hint: Let t represent the amount of time the runner jogs at 5 mph. Then 1.1 - t represents the amount of time the runner jogs at 8 mph.) Set up an equation for distance at 5 mph + distance at 8 mph = 7miles. 2. A.

Educational Economics 2. Educational economists strive to better understand the relationship between educational variables and other important factors operative in an economy. Observational data on n = 16 schools in the state of New York are available. Eight of these schools received a special school-wide intervention (named "Schools to Watch")
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MAT 350 Module Seven Application Project Guidelines and Rubric: Hill Substitution Ciphers This project introduces students to an encryption scheme called the Hill substitution cipher. This encryption technique encodes information via a matrix multiplication and decodes data by multiplying by the inverse matrix. The encoding matrix is typically

For the polynomial functionf(x)=x 4 6x 3 + 9x 2 a.Use the Leading Coefficient Test to determine the graph's end behavior. b.Find the x-intercepts.State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. c.Find the y-intercept. d.Determine whether the graph has y-axis symmetry, origin symmetry, or
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MATH133 - Unit 3 Individual Project NAME (Required): _____________________________ Please show all work details with answers, insert the graph, and provide answers to all of the critical thinking questions on this document. In 1967, Dr. Gene Amdahl developed Amdahl's Law for predicting speed-up gained using multiple processors in parallel while

Projective Geometry Math 5130 14. State the definition of a configuration. Identify the following as configurations (a) triangle, (b) quadrangle, (c) Desargues, (d) Pappus.

A student'services cell phone plan has a monthly charge of $40 for 600 minutes of use and a $0.25/minutes charge for each additional minutes. Last month, the student talked on the phone for 790 minutes. Which of the following is the bill for the month?

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Find the x - and y -intercepts of the graph of the equation. (If an answer does not exist, enter DNE.) y 2 = x + 25 x -intercept( x , y ) = y -intercept( x , y ) = (smaller y -value) y -intercept( x , y ) = (larger y -value)

PLEASE SHOW ALL WORK AND STEPS TO THE PROBLEM BELOW. You have $20,000 to invest in a retirement savings account.Financial Investments offers a retirement account with 4.57% interest compounded monthly, while Safe Associates offers a retirement account with 4.6% interest compounded semi-annually.If you are thinking of investing this money for 6

Find the future value and total interest of the annuity. Annuity type Periodic payment Annual interest rate Payment paid Years Ordinary annuity $ 1 comma 000 1,000 6 6 % Annually 8 8 LOADING... Click the icon to view the Future Value of$1.00 Ordinary Annuity table. The future value of the ordinary annuity is $ nothing . (Round to the nearest cent

please help answer attached question 8. Stock Prices: The value of a share of l.J. Solar can be represented by V[x) : x2 6x + 13, where x is the number of months after January 2009. What is the lowest value V(x) will reach, and when did that occur? Pagezurz A151 wards [IE __|_+ 100%
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Convert 1he given number in decimal farm by expanding in powers and by using 1e eeleuleter Shel-tent. 11 1|.'.'|'1!'.Z|1[11WIJI Expand 11'11'11m in powers. \"'D'm'wED+D+EDJ+EDJ+D+EDJ+EDJ+EDJ+D [Ilse denendinn nrder. Dn nnt imnlifuj
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List the rst ti.Ii.I'ent'_.ur daunting numbers in the indicated base below. eight {Only digits [1 threugh I" are used in base eight] What are the rst t1.ilulent'_l..r daunting numbers in base eight\":ll D {Use a comma ta separate answers as needed.)
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The number of calories K needed each day by a moderately active woman who weighs w pounds, is h inches tall, and is a years old can be estimated by the formula K = 917 + 6(w + h - a). Elaine is moderately active, weighs 120 lb, is 67 inches tall, and is 23 years old. What are her caloric needs? Select one: A. 1081 calories B. 1901 calories C. 2039

3) Could someone please answer this question and provide a correct explanation?Thanks! \f
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Please assist. with this question. The answer that I had originally was wrong and I'm having trouble figuring it out. \f
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need help with this math questions please. Thanks need help with this math questions please. Thanks The general solution to a linear system is given. Express this solution as a linear combination of vectors. X1=5+6$17$2 X2=52 X3 = 4+3Sl X4=51
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Hello I am confused with this question If someone could help that would be much appreciated V VI\
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Solve using the substitution method 1. 2x+4y=-2 2x-y=6 2. 2x+y=12 5x-3y=8

Maria is performing a study on the IQ of groups in various areas. She has calculated that the average IQ of group A is 105 with a standard deviation of 10. What is the z-score for someone with an IQ of 98?

A circular swimming pool has a diameter of 60 feet, and is surrounded by a concrete sidewalk that is 5 feet wide. What is the area of the sidewalk? Round to the nearest square foot. 2. The Grand Prix Formula 1 race this weekend is in Singapore. The race consists of 61 laps around a 5.067 km long track. At 225 miles per hour, how long will it take

1.The attributable risk measure is calculated in order to: a. identify the numerical impact (rate) of prevention programs focused on the exposure when the program is given to those with the exposure b. identify the proportion of disease related to the exposure c. identify the frequency of exposure d. identify the etiologic role of the exposure e.

I am confused about the application of svd. Can someone help me answer this linear algebra question? Many thanks! Suppose Z is MVN(On,In). Find a and A so that a + AZ has a MVNQLL, E) distribu- tion. Please use the singular value decomposition to nd A
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Please answer the questions. Did them myself and trying to make sure I have the correct answer. Thanks! \f\fLet A he s 3 s: 3 matrix with (let A = _2 . Which tine Elf the fullnwing statements is false? (I) a det[.dl2)= 4 O E. det[lxi1)= 4 O c. det[A'1) = g C) n. det[}1f)= 2 (:1 E. A is invertible
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Please Graph:x + 4y = 8 over the range x = -5 to5

7 S17: Problem 12 (1 pt) Compute the line integral of the scalar function f(a:,y, z) = 2532 -l- 82 over the curve c(t) =( tt), 0 < t < 8 fc f($ayaz) d3 =

You can have a reliable result that is invalid. Group of answer choices True False

Salary: Your weekly salary increases from $440 to $506. What percent is your raise? Discount Rate: The price of a shirt has been discounted by $20. The sale price is $29.95. What percent of the original list price is the discount? Weekly Paycheck: Your weekly paycheck is 12% more than your coworker's. Your two paychecks total $848. Find the amount

Question text Solve for x. (Round your answer to two decimal places) log x = 4 x = show work and explanation

Use the properties of logarithms to write the expression as a single logarithm. log 5 ( x ) - 3

Task The task is simple - find the outliers. This data contains various ground measurements - and is used to detect an 'earth-quake.' Earthquakes occur rarely, and thus they are 'anomaly/outlier.' If you are successful, you can predict earthquakes and save lives. There are no labels - thus, you will not be able to use supervised learning. Use any

A survey of 3000 college Math students nationwide was taken, and 114 wish they would've taken Math as early as possible in their college career proportion of college Math students who wish they would've taken Math then p-hat would equal what in this situation? Round to 2

_____is a statistical measure of variability within a data set. Group of answer choices Mean Standard deviation P-value Median Mode

Simplify f and find any vertical asymptotes of f. x+3; vertical asymptote: x = -3 x; vertical asymptote: none x; vertical asymptote: x = -3 x-3; vertical asymptote: none x2; vertical asymptote: none The game commission introduces 100 deer into newly acquired state game lands. The population N of the herd is modeled by where t is the time in years.

4 PROBLEM 8

a cooler contains 9 cans of soda; 4 cola, 4 orange, and 1 cherry. Two cans are selected at random without replacemetn. Find the probability that at lest one can is orange

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Cholesky factorization versus QR factorization. In this probiem we compare the accuracy of the two methods for solving a least-squares problem minimize "As: bll2. We take 1 1 1rr" A: 10* 0 , b: 1+1u-k , 0 10-* 1 10"\" forkz, k=7andk=8. (a) Write the normal equations, and solve them analytically (113., on paper, without using MATLAB). (b) Solve the
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Identify the numeral as Babylonian, I'llleyanr or Greek. Give the equivalent in the HinduArabic system. "("Il" 0 Click here for tables of Babylonian. Mayan, and Greek numerals. 0 More Info Select the correct choice below and ll in the answer box to complete your choice. 0 A. Mayan; D _ : : bylonian numerals 3' Babylonlan; El indu-Arabic numerals O
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Write the ratio 6 1/9 tons to 6 1/2 tons as a ratio of whole numbers using fractional notations. Write in simplest form.

In a classic stereotype threat experiment conducted with Caucasian and African American students, who scored the lowest on the difficult verbal test? Group of answer choices the African-American students, regardless of whether or not they recorded their race before starting the test the African-American and Caucasian students who recorded their

A random selection of volunteers at a research institute have been exposed to a typical cold virus. After they started to have cold symptoms, 25 of them were given multivitamin tablets daily which contain 3 grams of vitamin C and various other vitamins and minerals. The remaining 25 volunteers were given placebo tablets. For each individual, the
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For the equation, find three ordered pair solutions by completing the table. Then use any two of the ordered pairs to graph the equation. Illustrate answer in a graph also. x ??? 2 y 0 ??? ??? -1

Find the slope and y-intercept of the line -x + 10y = 70?

Please help: The list price of an iPod speaker is $67.50. It is on sale for 20% off and there is a 6% sales tax. The store calculates the sales tax on the $67.50 and then takes 20% off the total. Jonathan wants them to take the discount first and then calculate the tax, reasoning that the tax will then be calculated based on the lower price and he

Hello tutor; Help me solve the following. Find the X intercept of the graph of the equation; 2X-4Y=9 Draw the line

6.Let f ( x ) = 4 x 2 +2 x - 2 and g ( x ) = 3 x - 2 (a) Find the composite function (fog)(x)and simplify the results. (b) Find (fog)(-3)

Math question: I need to learn how to factor this equation. Please show me. Factor: 16y 2 -81

1.Roll a six-sided die.If the number showing is 5 or 6,that is the final number.If the number is 1,2,3 or 4, roll the die again at what shows is final number. Let X be the final number showing. Find the probability mass function of X and the cumulative distribution function of X.

As shown below, an observer (O) is located 400 feet from a building (B). The observer notices a kite (K) flying at a 29 angle of elevation from his line of sight. What equation and trigonometric function can be used to solve for the height (h) of the kite? What is the height of the kite? Show all work and calculations \f
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Numerical optimization An important problem in numerical computing is finding the minimum x of a function f(x). This is very much related to the root-finding problem. Indeed, if f is differentiable, then a minimum x = x of f(x) is a zero of the derivative f 0 (x). Unfortunately, an approach based on applying the bisection method to f 0 (x) may not

A small company manufactures two types of radios - regular and short-wave.The manufacturing of each radio requires two operations: Assembly and Finishing.The regular radios require 1 hour of Assembly and 3 hours of Finishing.The short-wave radios require 3 hours of Assembly and 1 hour of Finishing.The total work-hours available per week in the

Use logarithms to solve the equation symbolically ln x+ ln x 2 =6

Solve by using the substitution method 1. 6x-5=y y-6x=-9 2. y=7-4x 5x+y=12

Unit 2 Discussion Video Transcript Welcome to your Unit 2 Discussion. For this week you will be laying the foundation for a project that you will start working on this week, and continue working on throughout the term, until week 5. The goal here is to take many of the very central topics that you are learning about Algebra in ALEKS and other

Formulate but do not solve the problem. Michael Perez deposited a total of $2000 with two savings institutions. One pays interest at a rate of 5% /year, whereas the other pays interest at a rate of 7% /year. If Michael earned a total of $112 in interest during a single year, how much did he deposit in each institution? (Let x and y denote the

x 0 1 2 3 4 5 6 y 231 253.3 273.8 284.1 294.1 303.6 383.7 The given data can be modelled by a cubic regression function. When written in the form y=ax 3 +bx 2 +cx+d, the value ofa, to the nearest hundredth is

ANother point slope question I nee dhelp with! thank you all Find a pointslope form for the line that satises the stated conditions. When two points are given, use the rst point in the pointslope form. Passing through [2,3] and i i", 5} Choose the equation below. a On. y3=(x2} 9 QB. y2=E(x3} 0c. y3=(X-2} CI D. y3=(x-2)
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Determine (if possible) the zeros of the function g when the function f has zeros at x = r 1 , x = r 2 , and x = r 3 . g ( x ) =7 f ( x )

Heights of young adult U.S. women are approximately Normal with mean 64 inches and standard deviation 2.7 inches. What proportion of all U.S. young adult women are taller than 6 feet? The lifetime of a 2-volt non-rechargeable battery in constant use has a Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. The

Math Problems CAN Do this!! Please remember to show ALL of your work on every problem. 1) Simplify the expression and show the check of your answer. Assume that x and y represent nonnegative real numbers. 64 x 16 y 4 z 6 2) Simplify the expression and show the check of your answer. Assume that x and y represent nonnegative real numbers. 3 243 y 15

why statistical test you would use if you wanted to determine: a. if there was a RELATIONSHIP between female gender and BMI Based on the table in the ASSOCIATIONS OR RELATIONSHIPS section below and recommended statistic tests, among these options, the most appropriate test from the list would be the Pearson Moment Product Correlation Coefficient

What is the standard deviation of this sample 11, 13, 22, 5, 10, 10, 17, 13: _

area to mow is 13x -4 in lengthen and 5x in width shed in area is 2x by 2x t 4 found out area that needs to be mowed Polynomials of lawn that he needs to mow need 2 terms like and simplifly

For his phone service, Henry pays a monthly fee of $27, and he pays an additional $0.04 per minute of use. The least he has been charged in a month is $76.68. What are the possible number of minutes he has used his phone in a month? Use m for the number of minutes, and solve your inequality for m.

2 of 9 please find the answer for the following f(4,-5) f(-4,4) f(-5,-4) and f(0,8) Thank you \f
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One estimate for the ideal body weight of a woman is shown below. Use this information to answer parts (A) through (D). 49 kg+ 2.7 kg for each inch over 5 feet

the height y (in feet) of a ball thrown by a child is y= - 1_ x^2 +4x +3 14 where x is the horizontal distance in feet from the point at which the ball is thrown. A)how high us the ball when it leaves the child's hand?_________feet B)what is the maximum height of the ball?___________feet C)how far from the child does the ball strike the

Kelly wants to accumulate 1 million dollars by investing a lump sum into an IRA (Individual Retirement Account) and letting it grow for the next 45 years. After researching different IRA's she has narrowed her investment decision to two possibilities. Option 1 pays an APR of 5.65% compounded continuously, and Option 2 pays an APR of 5.6%

1.5x^7-45x^6+x^5 2.5x^3-15x^2-90x 3.225s^2+256 4.T^2-2ty-80y^2 5.20a^5+5a 6.4-2x-30y+15xy 7.B^2+5b-36 8.C^2-18c+81 9.36a^2-60a+25 10.W^2-2w+25 11.10a^2-33ad+20d^2 12.63v^2+20v-3 13.4+9x4-18y-2x 14.64r^2-81d^2 15.V^2+6v+9

Income tax in a particular country is calculated according to the following rate schedule: 20% on the first $18,000 of income 38% on the next $36,000 of income 49% on any further income a. How much income tax should be paid by someone making $31,300? b. How much income tax should be paid by someone making $71,900? c. Construct a piecewise function

not sure how to solve as a single logarithm. Assume that the arguments of all logarithms represent positive numbers. 2 log base 3 x + 1/3 log base 3x - 5 log base 3(x+3) (Simplify youranswer, using fractional exponents asneeded.) thank you!

Transformations2: Problem 2 Previous Problem Problem List Next Problem (1 point) Let X and Y have the joint density function f(x, y) = 1 2027 /2 x 2 1, y > 1. Let U = 2XY and V = 3X/Y. (a) What is the joint density function of U,V? fu,v ( u, v) = (b) On what domain is this defined? uz and Note: You can earn partial credit on this problem. Preview
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tvaluate. Choose the best method and the answer. I 23:83:\"(13: a. u-substitution, with u = 23;, = 2. b. u-substitution, with u = 333', 3: = 333'\". c. integration by parts, with u = 23;. d. integration by parts, with 'u, = .333. Integrate. Choose the best approach and the answer. I sin3 a: do: a. use sin2 m = NIH (1 cos 23), then use
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A die is rolled twice. What is the probability of getting either a multiple of 3 on the first roll or a total of 7 for both rolls?

Obtain the Cartesian equation of the curve by eliminating the parameter. 33) x = cos 9, y = 4 sin229 34)x=9sect,y=7tant
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What is the probability that the first die is a 2 given that the sum is 7

Let g(x)=7x^22. (a) Find the average rate of change from 2 to 6 (b) Find an equation of the secant line containing (2,g(2)) and (6,g(6)).

Consider the following experiment in which cards are chosen at random sequentially one at a time without replacement from a well-shuffed deck of cards until a HEART and a DIAMOND are observed. Let X denote the number of cards chosen.Find E(X).

Given an equation of a line, find equations for lines parallel or perpendicular to it going through specified points. Find the appropriate equations and points from the table below. Simplify your equations into slope-intercept form. Use your assigned number to complete. 1. Write the equation of a line parallel to the given line and passing through

The inequality 5 > x has the solution: a 5, 00 d (-00, 5) b ( - 00, 5) c [ -00, 5)

How might issues of sampling and threats to validity impact program evaluation? Give specific examples of ways in which at least three particular forms of sampling might have an impact on validity.

11.01 Translations and Reflections Short Answer Quiz QUESTION 1 Describe in your own words what a translation is. QUESTION 2 How are the coordinates of the new point found if it is translated right/left and up/down? QUESTION 3 There are three ways to denote a translation. What are the three ways? QUESTION 4 What is (-1, -2)? QUESTION 5 Start with

Two coins are flipped. You win $2 if either 2 heads or 2 tails turn up: you lose $3 if a head and a tail turn up. (a) What is the expected value of the game? (b) For the game to be fair, how much should you lose if a head and a tail turn up? Please show appropriate steps so I can fully understand how this problem is solved. Thank you!

. A population has a mean = 150 and a standard deviation = 25. Find the mean and standard deviation of the sampling distribution of sample means with sample size n = 100.Mean of sampling distribution: Standard deviation of sampling distribution:

Solve graphically the point (x,y):2x + 3y = -4 and x - 2y = 5

Linda received a gift card for $15.00a photo center.She used it to buy prints that cost 7cents each.The remaining balance, B(in dollars), on the card after buying printsis given by the following function. B(x)=15.00-0.07x What is the remaining balance on the card if Linda bought 50 prints?

A study concluded that among people with a certain virus, 99.3% of tests conducted were (correctly) positive, while for people without the virus, 97.6% of the tests were (correctly) negative. If 34% of patients actually carry the virus, what's the probability that a patient testing negative is truly free of the virus?

18.Select the sum of the series. 1 6 k 2 39.The fundraising team starts with $170 in the bank. Each magazine that the team sells adds $8 to the savings. Put the terms in a formula similar to this scenario? a1 = (?) a n = an-1 + (?) 17.What are the first five terms in the geometric sequence a n = 5 n - 1 , starting with n = 1 21. What is the

During a recent eruption, a volcano spewed copious amounts of ash. One small piece of ash was ejected from the volcano with an initial velocity of 368 ft/sec. The height H, in feet, of our ash projectile is given by the equation:H = -16t^2 + 368t Question 1. When does the ash projectile reach the its maximum height? t=? Question 2. What is its

Solve the following system of equations for x: 4x + 3y = -1 2x + 5y = 3

The students in Ms. Ramirezs math class have birthdays in each of the four seasons. The following table shows the four seasons, the number of students who have birthdays in each season, and the percentage (%) of students in each group. Construct a bar graph showing the number of students. Seasons Number of students Proportion of Population Spring

A salesperson earns a base salary of $1,560 per month and a commission of 7.8% on the amount of sales. If the salesperson has a paycheck of $4,543.50 for one month, what was the amount of sales for the month? Show work.

13 of 16 please answer part a... which is the equation... ... as well as b graphing the circle and tangent lines please \f
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The question is on the screenshot please look there and answer Use the intercept formula LJ 5 b ' where a and b are the x- and y-intercepts, respectively, to nd an equation of a line with the given X- and y-intercepts. x-intercept 6; y-intercept 5
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Hellpppp!!! these questions are tough I would love to check my answers 5] 5. A company estimates that it will have to replace a piece of equipment at a cost of $800, 000 in 5 years. 'Ib have this money available in 5 years, a. sinking fund is established by making equal monthly payments into an account paying 6.6% compounded monthly. (A) How much
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If f ( x ) = ( x 9) 2 and g ( x ) = x +2 What is ( f g )(2) ( g f )(2)

Find the slope of a line tangent to the curve y equals 46 x minus 2 x Superscript 4 y=46x2x4 at x equals 1 x=1. Use the tangent feature of a graphing calculator to display the curve and the tangent line.

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