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Given r(x) = 6xx + 8 ,find the following. r(−1)= __ r(-3)= __ r(1/2)= __ r(0.1)=__ r(10,000)=___
1. 1 answer
2. 412 views
A manufacturer produces a product at a cost of $26.80 per unit. The manufacturer has a fixed cost of $500.00 per day. Each unit
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2. 570 views
A bus was purchased for $80,000. Assuming the bus depreciates at a rate of $6,000 per year (straight-line depreciation) for the
1. 1 answer
2. 761 views
A northbound 3000 kg truck collides with an eastbound 2000 kg car. The two vehicles slide together as a single mangled object
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2. 375 views
How can erosion effect the carbon cycle?
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2. 824 views
I do not know how to solve this problem. Could you show me how?You have a stock solution of 5.00M H3PO4. a.) What would be the
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2. 642 views
If He(g) has an average kinetic energy of 7590 J/mol under certain conditions, what is the root mean square speed of F2(g)
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2. 686 views
Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes
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2. 3,788 views
Imagine there is a tank of unknown gas that contains 53.31% carbon, 35.51% oxygen, and 11.18% hydrogen by mass. At 35.0 °C and
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2. 1,159 views
A 8.50-g sample of solid AlCl3·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior,
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2. 1,797 views
Air is 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by moles. What is the density of air at 22 °C and 760 torr? Assume ideal
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2. 1,982 views
Why does biomass decrease as we move up the biomass pyramid?
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2. 652 views
A skydiver weighs 158 lb. When the skydiver reaches terminal speed, how much air drag does the skydiver experience?
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2. 813 views
A jar contains four blues marbles and two green marbles. Without looking, two marbles are drawn from the jar. What is the
1. 5 answers
2. 2,191 views
Orange juice clams that 200ml of their product contains 2.5 times the average daily allowance of Vitamin C. Calculate the
1. 2 answers
2. 1,145 views
The product of two numbers is 35. one of the numbers is n, what expression represents the other number?
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2. 1,102 views
Did I break this up correctly? NaHclO3 breaks into Na+ and HClO3-, and that further breaks into H+ and ClO3-
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2. 504 views
NaHclO3 breaks into Na+ and HClO3-, and that further breaks into H+ and ClO3-, is that right?
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2. 778 views
Something that will lower the freezing point of water to -3.7 degrees Celsius if one mole were placed in 1000 grams of water? To
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2. 625 views
Please Help!!! I just need some ideas to right a short essay. I've already though of allergies as one problem.Language Arts
1. 5 answers
2. 646 views
What element(s) are more polarizable than oxygen? How can you tell? Wouldn't fluorine be most polarizable, because it is the
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2. 737 views
what is tan 3pi/4
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2. 371 views
Let k(x) = -3.7e^0.8x + 8.2Find the asymptote, y-intercept, k(-2), and k(6.25) 1. Asymptote = 2. Y - intercept = 3. k(-2) =
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2. 455 views
1) The essential question for the last few lessons asks "How did Canada seek to establish economic security and social justice
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2. 625 views
1) The essential question for the last few lessons asks "How did Canada seek to establish economic security and social justice
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2. 739 views
We are given the following statistics about the number of children in the families of a small village.There are 100 families: 10
1. 3 answers
2. 6,113 views
A single dot is placed on a very long length of yarn at the textile mill. The yarn is then cut into pieces. The lengths of the
1. 1 answer
2. 947 views
Consider a Poisson process with rate λ. Let N be the number of arrivals in (0,t] and M be the number of arrivals in (0,t+s],
1. 1 answer
2. 7,313 views
All ships travel at the same speed through a wide canal. Each ship takes t days to traverse the length of the canal. Eastbound
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2. 863 views
In parts 1, 3, 4, and 5 below, your answers will be algebraic expressions. Enter 'lambda' for λ and 'mu' for μ. Follow
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2. 2,069 views
Suppose that you have two laptops, both of which you begin using at time 0. Each laptop will eventually fail, and we model each
1. 1 answer
2. 692 views
Fred is giving away samples of dog food. He makes visits door to door, but he gives a sample away (one can of dog food) only on
1. 4 answers
2. 832 views
For any given flight, an airline tries to sell as many tickets as possible. Suppose that on average, 10% of ticket holders fail
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2. 1,800 views
Let X be a continuous random variable. We know that it takes values between 0 and 3, but we do not know its distribution or its
1. 3 answers
2. 1,160 views
For each of the following sequences, determine the value to which it converges in probability.(a) Let X1,X2,… be independent
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2. 3,258 views
Let Θ be an unknown random variable that we wish to estimate. It has a prior distribution with mean 1 and variance 2. Let W be
1. 13 answers
2. 3,144 views
Consider a fire alarm that senses the environment constantly to figure out if there is smoke in the air and hence to conclude
1. 5 answers
2. 804 views
Manhole explosions (usually caused by gas leaks and sparks) are on the rise in your city. On any given day, the manhole cover
1. 6 answers
2. 852 views
Let N,X1,Y1,X2,Y2,… be independent random variables. The random variable N takes positive integer values and has mean a and
1. 8 answers
2. 1,738 views
Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the formfX(x)=⎧⎩⎨cx3 if x≥1,
1. 4 answers
2. 1,295 views
Let U, V, and W be independent standard normal random variables (that is, independent normal random variables, each with mean 0
1. 5 answers
2. 2,225 views
1. For the following research question, specify the parameter and give the null and alternative hypotheses. "Is there a
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2. 754 views
The random variable X is uniformly distributed over the interval [θ,2θ]. The parameter θ is unknown and is modeled as the
1. 11 answers
2. 8,990 views
Let N be a geometric r.v. with mean 1/p; let A1,A2,… be a sequence of i.i.d. random variables, all independent of N, with mean
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2. 1,749 views
Let X=U+W with E[U]=m, var(U)=v, E[W]=0, and var(W)=h. Assume that U and W are independent.The LLMS estimator of U based on X is
1. 3 answers
2. 5,671 views
Caleb builds a particle detector and uses it to measure radiation from a remote star. On any given day, the number of particles,
1. 5 answers
2. 1,193 views
We have k coins. The probability of Heads is the same for each coin and is the realized value q of a random variable Q that is
1. 8 answers
2. 8,242 views
The lifetime of a type-A bulb is exponentially distributed with parameter λ. The lifetime of a type-B bulb is exponentially
1. 10 answers
2. 11,688 views
Let T1,T2,…,Tn be i.i.d. observations, each drawn from a common normal distribution with mean zero. With probability 1/2 this
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2. 2,180 views
The vertical coordinate (“height") of an object in free fall is described by an equation of the formx(t)=θ0+θ1t+θ2t2, where
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2. 7,935 views
Let Θ be a Bernoulli random variable that indicates which one of two hypotheses is true, and let P(Θ=1)=p. Under the
1. 8 answers
2. 7,708 views
Alice has two coins. The probability of Heads for the first coin is 1/3, and the probability of Heads for the second is 2/3.
1. 4 answers
2. 4,149 views
A defective coin minting machine produces coins whose probability of Heads is a random variable Q with PDFfQ(q)={3q2,0,if
1. 3 answers
2. 8,652 views
Why does an increase in light intensity cause the rate of photosynthesis to increase?
1. 0 answers
2. 492 views
4. Your article will be featured on the front page of the World section of the newspaper, as well as on-line. The article is to
1. 2 answers
2. 511 views
Date US PopulationJul 1, 2012 313.85 million Jul 1, 2011 311.59 million Jul 1, 2010 309.35 million Jul 1, 2009 306.77 million
1. 2 answers
2. 703 views
What is the gravitational field strength at a height h above the surface of the Earth? R is the radius of the earthgR2(R+h)2
1. 1 answer
2. 578 views
An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is
1. 1 answer
2. 560 views
Similarities between distance and displacementsimilarities between speed and velocity
1. 5 answers
2. 2,408 views
A certain state taxes the first $400,000 in property value at a rate of 1%; all value over $400,000 is taxed at 1.75%. Find a
1. 1 answer
2. 593 views
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction:H
1. 8 answers
2. 556 views
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid.Fe+H2SO4->FeSO4+H2 The
1. 0 answers
2. 424 views
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid.Fe+H2SO4->FeSO4+H2 It is
1. 0 answers
2. 426 views
I have already solve the problems in many time, but still cannot get the correct answer, can someone kindly help me to solve the
1. 0 answers
2. 444 views
You are holding a ball of mass m2 in your hand. In this problem you will solve for the upward force T⃗ that the tendon of your
1. 1 answer
2. 646 views
A person of mass m2= 85.0 kg is standing on a rung, one third of the way up a ladder of length d= 3.0 m. The mass of the ladder
1. 3 answers
2. 516 views
A uniform steel beam of mass m1= 300.0 kg is held up by a steel cable that is connected to the beam a distance L= 5.0 m from the
1. 2 answers
2. 1,335 views
A crane is configured as below, with the beam suspended at two points l1 and l2 by each end of a cable passing over a
1. 1 answer
2. 883 views
Solve for B: A=1/2(b+B) h show work.I am struggling with the above equation can someone please help? Thanks
1. 1 answer
2. 397 views
A rod is lying at rest on a perfectly smooth horizontal surface (no friction). We give rod a short impulse (a hit) perpendicular
1. 2 answers
2. 665 views
A solid disk 1 with radius R1 is spinning freely about a frictionless horizontal axle l at an angular speed ω initially. The
1. 1 answer
2. 804 views
A physical pendulum consists of a disc of radius R and mass m fixed at the end of a rod of mass m and length l .(a) Find the
1. 2 answers
2. 507 views
A uniform stick of mass m and length l is suspended horizontally with end B at the edge of a table as shown in the diagram, and
1. 0 answers
2. 1,057 views
A yo-yo of mass m rests on the floor (the static friction coefficient with the floor is μ). The inner (shaded) portion of the
1. 3 answers
2. 773 views
A light inflexible cable is wrapped around a cylinder of mass m1 , radius R , and moment of inertia about the center of mass Ic
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2. 457 views
A pulley of mass mp , radius R , and moment of inertia about the center of mass Ic=12mpR2 , is suspended from a ceiling. The
1. 1 answer
2. 527 views
A playground merry-go-round has a radius of R= 2 m and has a moment of inertia Icm= 9×103kg⋅m2 about a vertical axis passing
1. 3 answers
2. 1,031 views
A turntable is a uniform disc of mass m and radius R. The turntable is initially spinning clockwise when looked down on from
1. 1 answer
2. 660 views
write the equation in standard form.Y + 1 = X + 2
1. 3 answers
2. 387 views
How does altitude affect the freezing, melting and boiling points of water?
1. 3 answers
2. 807 views
The political movement that brought Africans together in the 1950s was known as ________.a. imperialism b. salt trade c.
1. 29 answers
2. 2,950 views
A sample of gas has an initial volume of 2.4 L at a pressure of 855 mm Hg and a temperature of 298K. If the gas is heated to a
1. 2 answers
2. 998 views
One popular ride at carnivals is the Roundabout, which works in the following manner. Riders stand on the inside edge of a
1. 2 answers
2. 646 views
You will be presented with three crystallographic directions drawn in a unit cell. Please write the identity of the direction in
1. 2 answers
2. 476 views
What is the approximate ratio in conductivity of silicon doped with 37 ppm to silicon doped with 5 ppm
1. 2 answers
2. 465 views
A comparison of density values obtained by X-ray diffraction reveals that the percentages of vacant sites in aluminum (Al) are
1. 3 answers
2. 549 views
What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from.Answe
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2. 561 views
What should be the pH of the aqueous layer to extract caffeine? There are three aqueous solutions that you may choose from.Answe
1. 0 answers
2. 1,062 views
While passing a slower car on the highway, you accelerate uniformly from 18.5 m/s to 29.3 m/s in a time of 12.0 s. How far do
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2. 637 views
como te llamas
1. 1 answer
2. 575 views
The convex lens of a copy machine has a focal length of 22.0 cm. A letter to be copied is placed 37.0 cm from the lens.(a) How
1. 1 answer
2. 1,030 views
In order to clearly read a book 16 cm away, a farsighted girl needs an image to be 36 cm from her eyes. What focal length is
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2. 651 views
Camera lenses are described in terms of their focal length. A 50.0 mm lens has a focal length of 50.0 mm.(a) A camera with a 50
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2. 455 views
A convex lens is needed to produce an image that is 0.70 times the size of the object and located 28 cm from the lens on the
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2. 484 views
The speed of light in a certain piece of clear plastic is 1.95 108 m/s. A ray of light strikes the plastic at an angle of 21°.
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2. 640 views
A ray of light in a tank of water has an angle of incidence of 23°. What is the angle of refraction in air? (Enter 0 if total
1. 0 answers
2. 563 views
he index of refraction of crown glass is 1.53 for violet light, and it is 1.51 for red light.(a) What is the speed of violet
1. 1 answer
2. 2,364 views
A diamond's index of refraction for red light, 656 nm, is 2.410, while that for blue light, 434 nm, is 2.450. Suppose white
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2. 1,081 views
A thick sheet of plastic, n = 1.500, is used as the side of an aquarium tank. Light reflected from a fish in the water has an
1. 0 answers
2. 707 views
A beam of light strikes the flat, glass side of a water-filled aquarium at an angle of 37.5° to the normal. For glass, n =
1. 0 answers
2. 1,007 views

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