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Brian

Questions (476)

If f(x, y, z)=sin(3x-yz), where x=e^(t-1), y=t^3, z=t-2, what's df/dt(1)?x(1)=1 y(1)=1 z(1)=-1
1. 1 answer
2. 435 views
A chain store manager hs been told by the main office that daily profit, P, as related to the number of clerks working that day,
1. 1 answer
2. 492 views
Estimate �ç 6 0 6−x^2 dx using 3 right rectangles
1. 0 answers
2. 321 views
Estimate �ç 6 0 6−x^2 dx using 3 left rectangles.
1. 1 answer
2. 338 views
An aluminum wing on a passenger jet is 38 mlong when its temperature is 23°C.At what temperature would the wing be 2 cm (0.02
1. 0 answers
2. 851 views
A compound containing only carbon, hydrogen and oxygen is subjected to elemental analysis. Upon complete combustion, a .1804g
1. 3 answers
2. 4,631 views
What is the wavelength of an electron traveling at 7.59% of the speed of light?
1. 1 answer
2. 1,219 views
How many valance electrons are there in [(C2H5)4N]+ ?
1. 1 answer
2. 932 views
What is the C-C-H bond angle in the molecule H2CCO?
1. 2 answers
2. 2,114 views
What type of reaction will occur when an aqueous solution of lithium chloride is mixed with an aqueous solution of ammonium
1. 1 answer
2. 998 views
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A
1. 0 answers
2. 610 views
Dry air will break down if the electric field exceeds about 3.0 × 106 V/m. What amount of charge can be placed on a capacitor
1. 0 answers
2. 960 views
The two plates of a capacitor hold +3200 µC and -3200 µC of charge, respectively, when the potential difference is 700 V. What
1. 1 answer
2. 526 views
The number, N, of people who have heard a rumor spread by mass media by time, t, is given by N(t)=a(1−e−kt). There are 6
1. 1 answer
2. 7,881 views
You budget $100 for parking each month. Each day you use the downtown parking lot, it costs you $5. Write a rule to represent
1. 0 answers
2. 638 views
invest $ 3000 and save $100 each month. Write a rule to represent the total amount of money invest into your account as
1. 1 answer
2. 1,101 views
A cannon is mounted on a truck that moves forward at a speed of 5 m/s. The operator wants to launch a ball from a cannon so the
1. 0 answers
2. 942 views
y'=2x+y. Find a solution whose graph is also an isocline.
1. 0 answers
2. 413 views
A cannon is mounted on a truck that moves forward at a speed of 5 m/s. The operator wants to launch a ball from a cannon so the
1. 1 answer
2. 643 views
What according to the basic conditions of employment act applies with regard to the contraventions
1. 1 answer
2. 426 views
Human relations are universal, but those defined as basic or primary are:a. the same from culture to culture b.defined
1. 2 answers
2. 493 views
Use the graph of f(x)=x^2/(x^2-4) to determine on which of the following intervals Rolle's Theorem applies. A) [0, 3] B) [-3, 3]
1. 1 answer
2. 550 views
f(x)=(x+2)^3-4. The point (-2, -4) is which of the following?A) An absolute maximum B) An absolute minimum C) A critical point
1. 1 answer
2. 933 views
Use the definition of logarithm to simplify each expression.(a) log6b (6b) (b) log9b ((9b)^5) (c) log10b ((10b)^-8)
1. 1 answer
2. 479 views
Evaluate the following expression.(Note, I'm not sure how to write this in mathematical form)but the P is slightly raised above
1. 1 answer
2. 964 views
Find the probability whose odds against are given in the problem.Odds against are 5 to 7. Answer is ________.
1. 0 answers
2. 477 views
From a survey of 200 college students, a marketing research company found that 130 students owned iPhones, 70 owned cars, and 60
1. 2 answers
2. 568 views
The math problem is set up as a fraction in parenthesis 6 over 4.Evaluate the expression (6/4)
1. 3 answers
2. 488 views
Let f"(x)=4x^3-2x and let f(x) have critical values -1, 0, and 1. Determine which critical values give a relative maximum. A)-1
1. 1 answer
2. 881 views
We want to rotate the direction of polarization of a beam of polarized light through 90 degrees by sending the beam through one
1. 5 answers
2. 2,662 views
We want to rotate the direction of polarization of a beam of polarized light through 90 degrees by sending the beam through one
1. 0 answers
2. 634 views
A small spaceship whose mass is 1.5x10^3 kg (include-ing an astronaut) is drifting in outer space with negligible gravitational
1. 0 answers
2. 902 views
Some neodymiun-glass lasers can provide 100 TW of power in 1.0 ns pulses at a wavelength of 0.26 um. How much energy is
1. 0 answers
2. 694 views
A spaceship at rest in a certain reference frame S is given a speed increment of 0.50c. Relative to its new rest frame, it is
1. 0 answers
2. 388 views
A 5.00-grain aspirin tablet has a mass of 320 mg. For how many kilometers would the energy equivalent of this mass power an
1. 2 answers
2. 980 views
A spaceship at rest in a certain reference frame S is given a speed increment of 0.50c. Relative to its new rest frame, it is
1. 1 answer
2. 595 views
If we intercept an electron having total energy 1533 MeV that came from Vega, which is 26 ly from us, how far in light-years was
1. 2 answers
2. 853 views
How much work must be done to increase the speed of an electron (a) from 0.18c to 0.19c and (b) from 0.98c to 0.99c? Note that
1. 3 answers
2. 1,841 views
A plant hangs from a 1.9 cm diameter suction cup affixed to a smooth horizontal surface (there's a figure but it's pretty
1. 0 answers
2. 597 views
A spy satellite orbiting at 160 km above Earth's surface has a lens with a focal length of 3.6 m and can resolve objects on the
1. 0 answers
2. 469 views
Visible light is incident perpendicularly on a diffraction grating of 200 rulings/mm. What are the (a) longest, (b) second
1. 1 answer
2. 963 views
length of a rectangle is 5y more than twice its width and area of the rectangle is 42 yards ^2, find the dimensions
1. 1 answer
2. 719 views
A chef is preparing a recipe for an upcoming banquet. Normally, he uses 10.25 mL of water, but today, he is using 112.75 mL of
1. 3 answers
2. 513 views
3, 125, 625, 125, 25, ??? I am thinking it is 10, 2?
1. 1 answer
2. 465 views
Help with annotating and finding overall them! Help!!!!!“Hope” is the thing with feathers By Emily Dickinson “Hope” is
1. 0 answers
2. 1,100 views
-1 3/7* (-3 2/3)A. 3 2/7 B. -5 5/21 C. 11 D. 5 5/21 I got A , but then I tried figuring it out again and I think the denominator
1. 1 answer
2. 271 views
Use >,< or = to complete the statement.|-10| |11| A. > B. = C.< I chose C is that correct I get confused because they are
1. 1 answer
2. 391 views
5(b + 8)A. 5b + 40 B. 5b + 8 C. 5b + 13 D. 8b + 40 I put D and that is not right
1. 2 answers
2. 836 views
Simplify the expression.3x + 3x A. 6x B. 9x C. 6xmc004-1.jpg D. 6 i got B and its not right
1. 2 answers
2. 402 views
Y over -6 > 10 and i need to solveA. y < â€“16 B. y > â€“60 C. y > 4 D. y < â€“60 I got C, but that's not right
1. 2 answers
2. 309 views
Solve the equation. -5=c/7A. -7/5 B. Ã¢â‚¬â€œ12 C. -5/7 D. Ã¢â‚¬â€œ35 I got C but not sure how to do this
1. 1 answer
2. 312 views
Solve the inequality.1/4c < 8 A. c < â€“4 B. c < 32 C. c > 32 D. c > 12 I chose C and its not right :(
1. 1 answer
2. 434 views
A rock is thrown upward at 65.2◦ with respect to the horizontal. As it rises, its vertical component of velocity
1. 1 answer
2. 766 views
Given --->VY bisects <TVZ.--->ZY bisects <TZV. <TVZ =~ <TZV Conclusion: <3 =~ <1
1. 1 answer
2. 631 views
A random sample of forty-eight 200 meter swims has a mean of 3:12 minutes and a standard deviation of .09 minute. Construct a
1. 1 answer
2. 3,306 views
what is the stopping distance for a work truck weighing 4,685 lbs plus cargo of 1000 lbs traveling at 35mph?
1. 0 answers
2. 389 views
what is the stopping distance of a 3500 lb work truck traveling at 35mph?
1. 1 answer
2. 317 views
If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 liters of water, what is my concentration in ppm ?
1. 3 answers
2. 1,067 views
If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 liters of water, what is my new concentration?
1. 1 answer
2. 420 views
You just borrowed $15,000 from a bank. If you pay $4,000 at the end of each year over the next 5 years, you will pay off the
1. 2 answers
2. 574 views
In a car race, there are 6 chevrolets, 4 fords, and 2 pontiacs. In how many ways can the cars finish if we consider only the
1. 1 answer
2. 535 views
Consider an infinitely repeated Cournot duopoly with discount factor delta <1, unit costs of c>0, and inverse demandfunctions
1. 0 answers
2. 771 views
At takeoff, a plan flies at an angle of 10 debrees with the runway. After it has traveled a ground distance of 2,800 feet, find
1. 1 answer
2. 1,171 views
How geographic isolation of a common ancestral species of finches has led to the development of 14 different species of finches
1. 2 answers
2. 981 views
This is an extra credit assignment I was assigned that I really need the points for. I am having alot of trouble with it. I did
1. 0 answers
2. 459 views
log(x+10)=1+log(4x-3)
1. 1 answer
2. 441 views
Postal regulations specify that a parcel sent by priority mail may have a combined length and girth of no more than 96 in. Find
1. 2 answers
2. 9,672 views
lim -7 + (7/x)/ 6 - (1/x2)x�¨-�‡
1. 0 answers
2. 248 views
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring
1. 1 answer
2. 780 views
Calculate ΔSfus and ΔSvap for HF.Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I
1. 8 answers
2. 2,840 views
Given y = 5 sin(6x – pie), state the(a) period (b) phase shift
1. 1 answer
2. 568 views
(a) State the reference angle associated with 265°.(b) Convert 265° to radians. Leave the answer in terms of pie .
1. 1 answer
2. 406 views
Given the function�" f(x)=1/4x− 3, find a formula for the inverse function.
1. 1 answer
2. 912 views
A can of soda at 80° F. is placed in a refrigerator that maintains a constant temperature of 36°F. The temperature T of the
1. 0 answers
2. 786 views
Bob, a resident of Metropolis, pays Metropolis an annual tax of $50 plus 1.9% of his annualincome. If Bob paid $2,387 in tax,
1. 0 answers
2. 406 views
Points (–1, 6) and (–3, 2) are endpoints of the diameter of a circle.(a) What is the exact length of the diameter? (Simplify
1. 0 answers
2. 701 views
For the parabola given by (y – 3)^2 = 8(x + 5), find the following:(a) direction parabola opens (to the left, right, up, or
1. 0 answers
2. 436 views
Find the equation for a line which passes through the points (–1, 1) and (3, –7). Write theequation in slope-intercept form.
1. 0 answers
2. 480 views
Let f (x) = 5x^2 – 9 and g(x) = x – 3.(a) Find the composite function ( f o g)(x) and simplify. Show work. (b) Find ( f o
1. 0 answers
2. 498 views
Suppose that sin q = − 12/13 and that q is a Quadrant IV angle.(a) Find the exact value of cos q. Show work. (b) Find the
1. 0 answers
2. 719 views
A projectile is launched from a platform 20 feet high with an initial velocity of 72 feet per second,The height h of the
1. 0 answers
2. 853 views
the area of a triangle is 6x^2-x-15. find its height if the base of the triangle is 2x+3
1. 1 answer
2. 375 views
Assume a quantity in physics was defined as (x2a3/v2) (acceleration cubed timesdistance squared divided by velocity squared).
1. 2 answers
2. 462 views
What is the differnce between a range and domain how can I tell if it is a function or non function. I need a real life example
1. 1 answer
2. 436 views
A 34-g bullet traveling at 120m/s embeds itself in a wooden block on a smooth surface. The block then slides toward a spring and
1. 0 answers
2. 1,101 views
How many moles of A1 are needed to react with each mole of CuSO4 in the reaction 2AI + 3CuSO4 -> 3Cu + AI2(SO4)3.
1. 2 answers
2. 981 views
Can i have an explaination of 4x - 2y= 3 , How do i figure out the answer?
1. 1 answer
2. 365 views
A guy playing basket-ball needs to make the penalty shot for his team to win. Given that the ball is thrown from a height of 2
1. 4 answers
2. 516 views
A guy playing basket-ball needs to make the penalty shot for his team to win. Given that the ball is thrown from a height of 2
1. 0 answers
2. 430 views
this crime is holy-------what kind of literary device is this?
1. 1 answer
2. 559 views
a yo-yo is swung in a vertical circle in such a way that its total energy KE+ Pe is constant. At what point in the circle is the
1. 0 answers
2. 580 views
A 50kg person standing on both feet cover a surface about 13 cm x 12 cm. How much pressure is on the sole of their shoes?
1. 0 answers
2. 404 views
River A & B flow into river C. River A is 40 ft wide and is flowing at an average of 2.47 mph. River B is 25 ft wide and has a
1. 0 answers
2. 604 views
A ferry boat operator is required to drive directly to the opposite side of the river (starting at south side of river is A and
1. 1 answer
2. 769 views
Bill Seeker bought a boat costing $8500 with $1500 down, the balance plus add-on interest to be paid in 36 monthly installments.
1. 1 answer
2. 568 views
Consider the function f(x)=3x3+4x2+11, and let c be a number in the interval [01]. For what values of k is there a c in this
1. 1 answer
2. 443 views
What is a polygon with 12 sides ?
1. 1 answer
2. 452 views
Let M=1000. Which of the conditions is equivalent to f(x)= 1/((4x-12)^2)>M?a. absolute value of (x+3) is greater than or equal
1. 1 answer
2. 538 views
Find the vertex, value of p, axis of symmetry, focus, and directrix for x – 4 = (-1/6)(y + 2)^2
1. 1 answer
2. 481 views
A proton of mass m moving with a speed of 2.5×106 m/s undergoes a head-on elastic collision with an alpha particle of mass 4m,
1. 1 answer
2. 639 views

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