Mathematics problem solving
178175 questions • Page 18 / 3564
(1 point) consider a function f(r,y) at the point (2,1) At that point the functi
(1 point) consider a function f(r,y) at the point (2,1) At that point the function has directional derivatives: rvio in the direction (parallel to) (3,1), and in the direction (pa…
(1 point) consider the following resistor netvork with E-5V and Rj-10 for all j-
(1 point) consider the following resistor netvork with E-5V and Rj-10 for all j-1, . . . , 2n. i2) R R2n 2n-2 (Click on the image to enlarge) The loop cuments -1,n satisfy the sys…
(1 point) e-Marketer conducted a survey of Internet shoppers and found 13% said
(1 point) e-Marketer conducted a survey of Internet shoppers and found 13% said they shop more "online" now than they did last year. If a sample of 75 Internet shoppers is randoml…
(1 point) exam for is to determine a newly table below a conducted the if Use AB
(1 point) exam for is to determine a newly table below a conducted the if Use ABCDEFG HOJ is Ten text book more is designed statistical level who used the material (a) What softwa…
(1 point) ldentity he graphs A (blue, B(red) and C (green) as the graphs of a fu
(1 point) ldentity he graphs A (blue, B(red) and C (green) as the graphs of a function f(z) and ts dernvatves (a) and () cicking on the sketch will give you a version of the pictu…
(1 point) ms company owns 9 trucks of various makes and models. The manager rece
(1 point) ms company owns 9 trucks of various makes and models. The manager recently heard that inflating tires with nitrogen may provide slightly better gas mileage. The manager …
(1 point) nin 01 129 nin 03 148 80 148 168 Which of the following are true? A. T
(1 point) nin 01 129 nin 03 148 80 148 168 Which of the following are true? A. The median value for D 1 is less than the median value for D3 B. The data in D3 is skewed right C. A…
(1 poni) 1. Consider the sequence 11, 13, 15, 17, 19, 21... Compute the differen
(1 poni) 1. Consider the sequence 11, 13, 15, 17, 19, 21... Compute the difference between successive terms and enter your answer as a list. (For example, if the sequence were 2, …
(1 proportion hypothesis testing) I read in a newspaper that 37% of Americans dr
(1 proportion hypothesis testing) I read in a newspaper that 37% of Americans drink tea at least once a week. I want to test this claim Let's set the null hypothesis to be p'-0.37…
(1 pt) 3.0902 An automobile manufacturer would like to know what proportion of i
(1 pt) 3.0902 An automobile manufacturer would like to know what proportion of its customers are not satisfied with the service provided by the local dealer. The customer relation…
(1 pt) A Bernoulli differential equation is one of the form d y d x + P ( x ) y
(1 pt) A Bernoulli differential equation is one of the form dydx+P(x)y=Q(x)yn. Observe that, if n=0 or 1, the Bernoulli equation is linear. For other values of n, the substitution…
(1 pt) A Cepheid variable star is a star whose brightness alternately increases
(1 pt) A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that Cephei Joe is a star for which the interval between times of maximum br…
(1 pt) A bank account earns 3% annual interest compounded continuously. You depo
(1 pt) A bank account earns 3% annual interest compounded continuously. You deposit $48,000 in the account and withdraw money continuously from the account at a rate of $900 per y…
(1 pt) A cracker bakery wants to test microwaving crackers after breaking to red
(1 pt) A cracker bakery wants to test microwaving crackers after breaking to reduce the risk of broken crackers at the time the package is opened. The experimenter randomly assign…
(1 pt) A drug is administered intravenously at a constant rate of r mg/hour and
(1 pt) A drug is administered intravenously at a constant rate of r mg/hour and is excreted at a rate proportional to the quantity present, with constant of proportionality k >…
(1 pt) A fence 4 feet tall runs parallel to a tall building at a distance of 3 f
(1 pt) A fence 4 feet tall runs parallel to a tall building at a distance of 3 feet from the building. We want to find the the length of the shortest ladder that will reach from t…
(1 pt) A magazine article conducted a survey of 609 people in Washington State a
(1 pt) A magazine article conducted a survey of 609 people in Washington State and found that 20% of the population believe that Mount Saint Helens will have a repeat erruption th…
(1 pt) A new treatment is claimed to have a success rate better than 0.2. Let pl
(1 pt) A new treatment is claimed to have a success rate better than 0.2. Let pl be the success rate of the treatment. Here, the null hypothesis is p 0.24 and the alternate hypoth…
(1 pt) A poll conducted by a newspaper reported that 80% of those who responded
(1 pt) A poll conducted by a newspaper reported that 80% of those who responded liked ''reality TV.'' (a) The unknown true percentage of the population of all Americans who like '…
(1 pt) A poll conducted by a newspaper reported that 80% of those who responded
(1 pt) A poll conducted by a newspaper reported that 80% of those who responded liked ''reality TV.'' (a) The unknown true percentage of the population of all Americans who like '…
(1 pt) A random sample of 100 observations from a population with standard devia
(1 pt) A random sample of 100 observations from a population with standard deviation 22.6881507785873 yielded a sample mean of 93.8. (a) Given that the null hypothesis is -90 and …
(1 pt) A simple linear model has been fit to estimate the effect of temperature
(1 pt) A simple linear model has been fit to estimate the effect of temperature (degrees Celsius) on ambient terpene concentrations (parts per million) in a data set containing 30…
(1 pt) A simple linear model has been fit to estimate the effect of temperature
(1 pt) A simple linear model has been fit to estimate the effect of temperature (degrees Celsius) on ambient terpene concentrations (parts per million) in a data set containing 30…
(1 pt) A small resort is situated on an island off a part of the coast of Mexico
(1 pt) A small resort is situated on an island off a part of the coast of Mexico that has a perfectly straight north-south shoreline. The point P on the shoreline that is closest …
(1 pt) A thermometer is taken from a room where the temperature is 23 o C to the
(1 pt) A thermometer is taken from a room where the temperature is 23oC to the outdoors, where the temperature is 0oC. After one minute the thermometer reads 16oC. (a) What will t…
(1 pt) A thermometer is taken from a room where the temperature is 23 o C to the
(1 pt) A thermometer is taken from a room where the temperature is 23oC to the outdoors, where the temperature is 0oC. After one minute the thermometer reads 16oC. (a) What will t…
(1 pt) An algebra class has 20 students and 20 desks. For the sake of variety, s
(1 pt) An algebra class has 20 students and 20 desks. For the sake of variety, students change the seating arrangement each day. How many days must pass before the class must repe…
(1 pt) An elementary school is offering 3 language classes: one in Spanish, one
(1 pt) An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 100 students in the school. Ther…
(1 pt) Any population, P, for which we can ignore immigration, satisfies For org
(1 pt) Any population, P, for which we can ignore immigration, satisfies For organisms which need a partner for reproduction but rely on a chance encounter for meeting a mate, the…
(1 pt) Any population, P, for which we can ignore immigration, satisfies dP/dt =
(1 pt) Any population, P, for which we can ignore immigration, satisfies dP/dt = Birth rate - Death rate. For organisms which need a partner for reproduction but rely on a chance …
(1 pt) Because of the relatively high interest rates, most consumers attempt to
(1 pt) Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly, However, this is not always possible. An analysis of the …
(1 pt) Because of the relatively high interest rates, most consumers attempt to
(1 pt) Because of the relatively high interest rates, most consumers attempt to pay off their credit card bills promptly, However, this is not always possible. An analysis of the …
(1 pt) Below is the graph of the derivative f\'(x) of a function defined on the
(1 pt) Below is the graph of the derivative f'(x) of a function defined on the interval (0,8). You can click on the graph to see a larger version in a separate window. Refer to th…
(1 pt) Biologists stocked a lake with 500 fish and estimated the carrying capaci
(1 pt) Biologists stocked a lake with 500 fish and estimated the carrying capacity (the maximal population for the fish of that species in that lake) to be 8800. The number of fis…
(1 pt) Centerville is the headquarters of Greedy Cablevision Inc. The cable comp
(1 pt) Centerville is the headquarters of Greedy Cablevision Inc. The cable company is about to expand service to two nearby towns, Springfield and Shelbyville. There needs to be …
(1 pt) Check all the statements that are true: A. If a and b both divide c, then
(1 pt) Check all the statements that are true: A. If a and b both divide c, then ab divides c2. B. If p and q are distinct primes, then p2q2 has exactly 11 positive divisors. C. I…
(1 pt) Consider a sample space of three outcomes A,B,and C. Which of the followi
(1 pt) Consider a sample space of three outcomes A,B,and C. Which of the following represent legitimate probability models? A. P(A)=0.2, P(B)=0.8, P(C)=0.2 B. P(A)=-0.1, P(B)=0.8,…
(1 pt) Consider the error in using the approximation sin ( x ) = x on the interv
(1 pt) Consider the error in using the approximation sin(x)=x on the interval [-1,1] . (a) Reasoning i…
(1 pt) Consider the following differential equation =-+--+kx, where k is a const
(1 pt) Consider the following differential equation =-+--+kx, where k is a constant Ordinary differential equation (ODE) or a partial differential equation (PDE)? partial Note: Yo…
(1 pt) DC Imperfections 3 8e8e989-34a6 A noninverting amplifier with a closed-lo
(1 pt) DC Imperfections 3 8e8e989-34a6 A noninverting amplifier with a closed-loop gain of 301 V/Vis designed using an op amp having an input offset voltages of 4.5 mv and output …
(1 pt) DC Imperfections 3 8e8e989-34a6 A noninverting amplifier with a closed-lo
(1 pt) DC Imperfections 3 8e8e989-34a6 A noninverting amplifier with a closed-loop gain of 301 V/Vis designed using an op amp having an input offset voltages of 4.5 mv and output …
(1 pt) Deer ticks can carry bohtymedisease andlu na granulocytic ehrl n sis diol
(1 pt) Deer ticks can carry bohtymedisease andlu na granulocytic ehrl n sis diol), li a s udy oft ksun the Malwest, it was found that iS % eamed Lyme disease, while 14 % carned IG…
(1 pt) Each of the following statements is an attempt to show that a given serie
(1 pt) Each of the following statements is an attempt to show that a given series is convergent or divergent not using the Comparison Test (NOT the Limit Comparison Test.) For eac…
(1 pt) Even before you learn techniques for solving differential equations, you
(1 pt) Even before you learn techniques for solving differential equations, you may be able to analyze equations qualitatively. As an example, look at the nonlinear equation ay-6-…
(1 pt) For the function What are the vertical asymptotes? Give a list of the x-v
(1 pt) For the function What are the vertical asymptotes? Give a list of the x-values of the asymptotes separated by commas. x = What is the horizontal asymptote? y = What are the…
(1 pt) For the function f(x,y) =ye^x, using polar coordinates evaluate the Integ
(1 pt) For the function f(x,y) =ye^x, using polar coordinates evaluate the Integral over the region centered at the origin in the first-quadrant enclosed by the circle x^2 + y^2 =…
(1 pt) Hydrocodone bitartrate is used as a cough suppressant. After the drug is
(1 pt) Hydrocodone bitartrate is used as a cough suppressant. After the drug is fully absorbed, the quantity of drug in the body decreases at a rate proportional to the amount lef…
(1 pt) In a class of 100 students what is the smallest number of students such t
(1 pt) In a class of 100 students what is the smallest number of students such that their last names start with the same letter? (1 pt) What should be the minimum number of US stu…
(1 pt) In a study by the Departnent of Transportation, there were a total of 88
(1 pt) In a study by the Departnent of Transportation, there were a total of 88 drivers that were pulled over for speeding. Out of those 88 drivers, 30 were men who were ticketed,…
(1 pt) In a survey of 238 people, the following data were obtained relating gend
(1 pt) In a survey of 238 people, the following data were obtained relating gender to political orientation Republican (R) Democrat (D) Independent (I) Total 150 Male (M) Femal (F…
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Mathematics problem solving
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