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Describe that if A is any 2x3 matrix, then there can't be a 3x2 matrix C such that CA=I. b) if A is a 2x3 matrix such that it is possible to compute a 3x2 matrix B such that AB=I, what can you say
Determine the maximum value and the minimum value of the function f(x) on the interval [-4, 4] for f(x) = 2x - 3x^2 - 36x.
Determine the value of this perpetuity on January 1, 1995 if the annual effective interest rate was 6% from January 1, 1988 through January 1, 1996 and 4% thereafter.
Assume you wish to compare the means of two populations and that sigma1^2=9, sigma2^2=25, n=90. Suppose that you allocate n1=n2 observations to each sample. How large must n1 and n2 be in order to
Assume you wish to compare the means of two populations and that sigma1^2=9, sigma2^2=25, n=90. What allocation of n=90 to the two samples will result in the maximum amount of information about (mu
Data are transmitted over specific Ethernet network in blocks of 1500 octets (blocks of 8 bits). How many blocks are needed to transmit the following amounts of data over this Ethernet network?
In asynchronous transfer mode (ATM) (a communications protocol used upon backbone networks), data are organized in cells of 53 bytes. How many ATM cells can be transmitted in 1 minute over a connect
The men are all neighbors. But the truth of the matter is that only two of such statements are true can you help me find out the job of each man?
An 8-kg mass is attached to a spring hanging from ceiling and allowed to come to rest. Suppose that the spring constant is 40 N/m and the damping constant is 4 N-sec/m.
If x is a binomial random variable, calculate P(x) for each of the following cases:
Assume you observe a star that is twice as hot as the sun, but four times smaller in radius than the sun. How much more (or less) power (ie., luminosity or energy per time) is it emitting in total,
Supply equation: p=4q+5 Demand= 2q+p=81 How many units are demanded when the price is $50? How many units are supplied when the price is $50? When the price is $50 is there a shortage of the produc
Compute the unit normal vectors of all the faces of the tetrahedron using Method of Normal Vectors. Calculate the unit normal vectors of all the faces of the tetrahedron using Newell's Method.
A man claims to have extrasensory perception. As a test, a fair coin is flipped 25 times, and the man is asked to predict the outcome in advance. He gets 17 out of 25 correct. What is the probabili
A quiz cosists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing gra
The following statement is valid in at least one number system: determine one of them. 12 is a root of 2x^2 + 3x -346 = 0. Instead of giving the answer, could you explain me the solution by step by
A parallel plate flow chamber is employed to determine the viscosity of an unknown fluid. With a channel height of 0.2 cm and width of 2 cm, the wall shear stress can reach 4 Pa with flow rate of 6
Determine distance from the midpoint of the line segment joining A(-1,3) and B(3,5) to the midpoint of the line segment joining C(6,4) and D(-2,10).
Write down the equation in standard form of a circle with endpoints of its diameter at (4,2) and (-2,6).
A money manager invest $1250 at 4.5% simple interest and $1850 at 5.5% simple interest. How much money should the manager invest at 6.5% in order to get a total yield of 6% of the total for his cli
A 500L tank initially haves 300 L of fluid on which there is dissolved 50 grams of sulfuric acid. Fluid having 30 grams per liter of sulfuric acid flows in the tank at the rate of 4 liters per minut
Calculate the required roots. Express your answers in the (exact) form z=a+bi without trigonometric functions whenever possible and plot them in the complex plane the fourth roots of 2
Assume R is an integral domainm c,x,y elements in R and c isn't equal to zero. Prove that if cx=cy, then x=y
T testing, Some national statistics indicate the self-reported number of minutes per week of exercise is µ = 96.8 among college students. At the University of Wisconsin - Stevens Point, an advertising
It takes one employee three hours longer to mow football field than it does more experienced employee. Together they can mow the grass in 2 hours.