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Does the limit of xy/(x^2 + y^2) exist as (x,y)--->(0,0)?Why or why not??
1. 1 answer
2. 430 views
Three forces with magnitudes 75 pound, 100 lb, and 125 pound act on an object at angles of 30 degrees, -45 degrees, and 120
1. 0 answers
2. 733 views
Describe the surface and give traces:x = y^2 - 4z^2
1. 1 answer
2. 348 views
Given u=3i-2j+k,v=2i-4j-3k, w=-i+2j+2k,1 Find a unit vector normal to the plane containing v and w. 2 Find the volume of the
1. 1 answer
2. 934 views
Find the center (h,k) and radius r of the circle and then use these to (a) graph the circle and (b) find the intercepts, if any.
1. 1 answer
2. 696 views
Describe the following surface and give traces if available.x^(2)-4z^(2)=4
1. 2 answers
2. 378 views
You have a ten question multiple choice test in your next class and you did not study at all. Each question has four choices and
1. 2 answers
2. 825 views
Arrange the following 0.10M solutions in order of increasing pH:a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH
1. 1 answer
2. 7,113 views
The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more
1. 1 answer
2. 2,546 views
The pK3 of formic acid is 3.75A)what is the pH of a buffer in which formic acid and sodium formate have equimolar concentration?
1. 4 answers
2. 2,413 views
What is the probability that 10 of 100 apples will be < 130 g? mean=173 std deviation=34?
1. 1 answer
2. 394 views
For an Indian Youth Environment camp essay why should someone be chosen to go?
1. 1 answer
2. 348 views
Find the arc length of the curve described by the parametric equation over the given interval:x=t^(2) + 1 y=2t - 3 0<t<1
1. 2 answers
2. 830 views
On what intervals of t is the curve described by the given parametric equation concave up? Concave down?x=t^2; y=t^(3) + 3t I am
1. 0 answers
2. 390 views
Find the arc length of the curve described by the parametric equation over the given interval:x=t^(2) + 1 y=2t - 3 --> 0<t<1
1. 0 answers
2. 511 views
Convert the polar equation to rectangular coordinates: r = 2-cos theta...and find all points of vertical and horizontal
1. 2 answers
2. 1,110 views
Convert the curve to an equation in rectangular coordinates:x=(t+2); y=-2sqrt(t)
1. 2 answers
2. 374 views
Find the length of the curve over the given interval:x=t+1 y=ln cos(t) for t=0 ---> t=pi/4
1. 0 answers
2. 331 views
Find the length of the curve over the given interval:x=t+1 y=ln cos(t) for t=0 ---> t=pi/4
1. 0 answers
2. 334 views
Convert to a rectangular equation by eliminating the parameter:x=sin(theta) y=(cos theta)^2
1. 1 answer
2. 442 views
The Boeing 757-200 ER airliner carries 200 passengers and has doors with a height of 72 inches. Heights of men are normally
1. 2 answers
2. 3,008 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
1. 4 answers
2. 785 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
1. 2 answers
2. 733 views
Here is the height, in inches, of 10 randomly selected members of the girls' dance team and 10 randomly selected of the girls'
1. 0 answers
2. 637 views
A restaurant donates 2 cans of soup to charity for every 9 bowls of soup it sells. The number of cans of soup donated by the
1. 1 answer
2. 302 views
does the sum 3/(2^(n)-1) converge or diverge?n=1--->infinity
1. 0 answers
2. 1,115 views
Is the series 2/ln(n) convergent or divergent?n=3 to n=infinity
1. 1 answer
2. 373 views
Is the series 1/(n(n+1)) convergent?n=2 to n=infinity
1. 1 answer
2. 358 views
Find the base of a triangle whose area is 60in squared and whose height is 6 inchesI did 1/2 bh=A 60=3b so b=60/3 b=20 then
1. 1 answer
2. 419 views
A conducting rod whose length is 25 cm is placed on a U-shaped metal wire that has a resistance R of 8 Ù. The wire and the rod
1. 1 answer
2. 1,530 views
A 200-loop coil of cross sectional area 8.5 lies in the plane of the paper. Directed out of the plane of the paper is a magnetic
1. 1 answer
2. 1,278 views
A 50-cm wire placed in an East-West direction is moved horizontally to the North with a speed of 2 m/s. The Horizontal and
1. 2 answers
2. 1,077 views
If 5.30mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g
1. 1 answer
2. 1,931 views
Mr Shea saved $2500 in April. His monthly salary is two times the amount he saved in April. In May, he saved a certain amount of
1. 2 answers
2. 1,161 views
Mr Shea saved $2500 in April. His monthly salary is two times the amount he saved in April. In May, he saved a certain amount of
1. 1 answer
2. 711 views
When the switch is closed in a circuit, the wire between the poles of the horseshoe magnet deflects upward. From this you can
1. 2 answers
2. 1,330 views
find the limit as x approaches 0 (arcsin x)/x
1. 0 answers
2. 385 views
Use the shell method to find the volume of the solid formed by rotating the region bounded by y=x^3, y=0, x=0, and x=2 about the
1. 1 answer
2. 732 views
Use the disk method to find the volume of the solid formed by rotating the region bounded by y=2x and y=x^2 about the y-axis
1. 1 answer
2. 1,135 views
A parallel-plate capacitor is charged by a battery and then the battery is removed and a dielectric of constant K is used to
1. 1 answer
2. 1,681 views
Three identical capacitors are connected in series to a battery. If a total charge of Q flows from the battery, how much charge
1. 1 answer
2. 2,842 views
A 1 mF, a 2 mF, and a 3 mF capacitor are connected in series, the combination being connected across a 9 volt battery. Which
1. 2 answers
2. 2,728 views
Use the shell method to find the volume of the solid formed by rotating the region bounded by y=x^3, y=0, x=0, and x=2 about the
1. 0 answers
2. 473 views
Use the disk method to find the volume of the solid formed by rotating the region bounded by y=2x and y=x^2 about the y-axis.
1. 0 answers
2. 572 views
Find the area of region bounded by the curves y=sin(pi/2*x)and y=x^2-2x.
1. 1 answer
2. 2,580 views
Use the disk method to find the volume of the solid formed by rotating the region bounded by y=2x and y=x^2 about the y-axis.
1. 1 answer
2. 465 views
Can you please check my answers:)1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6%
1. 3 answers
2. 1,518 views
Can you please check my answers:)1. John Gray bought a basic car for $8,250.00, with options that cost $324.00. There's a 6%
1. 0 answers
2. 778 views
2x-3y=6I did +3y 2x=6+3y 1/2 to both sides(2x=3y/2+6) x=3/2y+6 or does the 1/2 go under the hole equation 0f3/2y+6 making the
1. 1 answer
2. 296 views
I want to open a savings account that earns 1.6% simple interest yearly. I want to earn exactly $288 in interest after 3 years.
1. 1 answer
2. 490 views
A maker of a cubic number blocks packs a rectangular box so that there are 8 blocks along one edge, 10 blocks along the second
1. 2 answers
2. 607 views
Find the length of the arc along f(x) = integral from 0 to x^3 sqrt(cos t) dt on the set of x [0, pi/3].
1. 1 answer
2. 482 views
x^2-4x-32 / x^2-20x-96how do you simplify this?
1. 1 answer
2. 370 views
What is the importance of ATP? explain where carbohydrate metabolism occurs in the cell, what additonal ingredient is needed and
1. 1 answer
2. 491 views
A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the
1. 0 answers
2. 1,067 views
A ball is thrown horizontally from the top of a building 17.6 m high. The ball strikes the ground at a point 67.7 m from the
1. 0 answers
2. 658 views
N2(g)+3H2(g) -> 2NH3(g)+ 22000 calConsider the reaction is at equilibrium. Explain how the equilibrium is shifted when a. more N
1. 1 answer
2. 960 views
What is the pH of a solution prepared by mixing 10 mL of 0.10 M NH3 and 5.0 mL of 0.24 M NH4+. Assume Ka(NH4+) = 5.56 x 10^-10
1. 1 answer
2. 569 views
evaluate the expression assuming that cos(x)=1/7, sin(y)=1/3, sin(u)=2/5 and cos(v)=1/3. what is cos(u+v)? sin(x-y)? and
1. 1 answer
2. 340 views
what would happen if there were no negative feedback control on growth hormone and thyroid hormone?
1. 1 answer
2. 1,344 views
Find the smallest positive number t such that e^sin(t)=1/2
1. 1 answer
2. 535 views
what angle does the line y=6/7x make on the xy plane with a positive x axis?
1. 1 answer
2. 413 views
what angle does the line y=6/7x make on the xy plane with a positive x axis?
1. 0 answers
2. 298 views
30. A truck of mass 2250 kg is used to pull a 330 kg trunk out of an old quarry as shown below. There is 550 N of rolling
1. 1 answer
2. 1,740 views
their are children waiting in the lobbywhat is the simple subject
1. 1 answer
2. 670 views
A worker on scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 20 feet above
1. 1 answer
2. 1,906 views
A spring gun (k = 27.1 N/m) is used to shoot a 51.1-g ball horizontally. Initially the spring is compressed by 16.5 cm. The ball
1. 1 answer
2. 816 views
A rollercoaster reaches the top of the steepest hill with a speed of 6.0 km/h. It then descends the hill, which is at an average
1. 0 answers
2. 697 views
find dy/dx ofxsiny-ycosx=1
1. 1 answer
2. 1,109 views
find dy/dx(-x^2)(y)+2xy=3y^2-7
1. 1 answer
2. 948 views
find dy/dx-x^2y+2xy=3y^2-7
1. 0 answers
2. 273 views
find the derivative of f(x)=3x^2-x using the limit definition.
1. 2 answers
2. 2,270 views
find the equation for the line tangent to the curve at the given point.(x^2)(y^2)-2xy+x=1 at (2, 1/2)
1. 1 answer
2. 396 views
find the derivative of g(x)=sin(cos(sin(pi*x)))
1. 1 answer
2. 396 views
grain is being poured through a chute at rate of 8 ft^3/min and forms a conical pile whose radius of the bottom is always 1/2
1. 1 answer
2. 1,741 views
Centrifuges are commonly used in biological laboratories for the isolation and maintenance of cell preparations. For cell
1. 2 answers
2. 925 views
The term "public opinion" is frequently used in reference to all of American society. This perspective is?A. accurate, since
1. 3 answers
2. 1,444 views
A member of Congress who wants to act on what the majority of his or her constituency thinks on a particular issue would be
1. 0 answers
2. 1,131 views
A projectile is fired from the surface of the Earth with a speed of 150 meters per second at an angle of 45 degrees above the
1. 0 answers
2. 674 views
A projectile is fired from the surface of the Earth with a speed of 150 meters per second at an angle of 45 degrees above the
1. 0 answers
2. 553 views
Daily Life Magazine wants an analysis of the demographic characteristics of its readers. The Marketing Department has collected
1. 0 answers
2. 476 views
When a baseball is tossed directly upward, what is the slope of a plot of its acceleration versus time during the upward flight?
1. 3 answers
2. 2,129 views
A model sailboat is slowly sailing west across a pond at 0.342 m/s. A gust of wind blowing at 28.7° south of west gives the
1. 1 answer
2. 1,105 views
The coefficient of static friction between a block and a horizontal floor is 0.414, while the coefficient of kinetic friction is
1. 0 answers
2. 601 views
A gull is flying horizontally 8.17 m above the ground at 6.35 m/s. The bird is carrying a clam in its beak and plans to crack
1. 0 answers
2. 549 views
1) On a plot of position x versus time t for an object’s motion, what corresponds to the object’s velocity at any given
1. 1 answer
2. 1,183 views
A landscaper plans to cover a 9-by-18-foot rectangular flower bed with bark dust 3 inches deep.The bark dust he is using costs
1. 0 answers
2. 552 views
a uniform meter stick is balanced at its midpoint with a single support. a 50 N weight is suspended at the 30 cm mark. at what
1. 0 answers
2. 940 views
a person weights 550 N rides a bike. the pedals move in a circle of radius 30 cm. if the entire wt acts on each downward moving
1. 0 answers
2. 411 views
A 136-lb. student races up stairs with a vertical height of 4.8 m in 6.0 s to get to a class on the second floor. How much power
1. 1 answer
2. 2,008 views
What is the kinetic energy of a 29 kg dog that is running at a speed of 8.8 m/s (about 20 mi/h)?
1. 3 answers
2. 4,642 views
How much work does gravity do on a 0.140-kg ball falling from a height of 14.0 m? (neglect air resistance)
1. 1 answer
2. 3,299 views
A man pushes a lawn mower on a level lawn with a force of 192 N. If 50% of this force is directed downward, how much work is
1. 0 answers
2. 1,057 views
A 6.2 "kil" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.31 m. above the
1. 0 answers
2. 953 views
The Romance World Cruise Line provides special gifts for passengers who are newlyweds, as well as for those who have been
1. 1 answer
2. 712 views
What the general term a_n for the geometric sequencea_1= -5 and a_2= 15
1. 0 answers
2. 513 views
which is the easies,t Arithmetic Series or a Geometric Series? and why?
1. 2 answers
2. 378 views
The radius of the Earth is approximately 6370 km. If one could dig down straight towards the center of the Earth, one would find
1. 3 answers
2. 3,018 views
How is a quadratic inequality different from a quadratic equation?
1. 1 answer
2. 424 views
please help me on how to complete the table and evaluate f(x)x=0, x=1, x=2, x=3, x=4 f(x)7/x-1 my answers were -7 for x=0 7/0
1. 1 answer
2. 371 views

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