# hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx

49,088 questions, page 257
1. ## Maths

A point A(4, k) and B(2, 4) subtend a right angle at the origin of the coordinate axes. Find the value of k.

asked by Skyboy on February 5, 2016
2. ## Physics

A vibrating point on a spring travels 60 mm during three cycles. What is the amplitude of the vibration?

asked by Liz on May 4, 2014
3. ## math

for ax^2 + bx + c with gradient 4x + 2 and a stationary value of 1 find a b and c and nature of point i think that its a minima and that its 2x^2 + 2x +2 but im not sure can someone check this please

asked by libby on February 28, 2010
4. ## college geometry

Points A and B have symmetry with respect to the origin O. Find the coordinates of B if A is the point: a) (3, 4) c) (a, 0) b) (0, 2) d) (b, c)

asked by Mark on May 28, 2015
5. ## math

What is the derivative of y=x+sin(xy) in terms of x and y at any point on the curve So I got to y'\1+cos(xy)*.... I dont know what to do next

asked by Anonymous on January 20, 2019
6. ## Oral Literature

It is a riddle: We see it every morning, it has many colors and at one point in our lives we all have it Please help me answer and an explanation of it

asked by Sentry on November 8, 2016
7. ## Calculus

Find the point on the graph of z = 3x^2 − y^2 at which vector n = ⟨12, 4, −1⟩ is normal to the tangent plane. So far I've got: fx(x,y) = 6x = 6a fy(x,y) = -2y = -2b Where do I go from there?

asked by EKM on October 15, 2018
8. ## math

Factor the following polynomials. (1 point each) 9. 3x2 – 12 10. 5x3y + 35x2y + 45xy

asked by Boobear on April 5, 2013
9. ## History

Why is the Battle of Midway considered a turning point in World War II?

asked by iron man on May 5, 2019
10. ## social studies

From the point of an environmentalist, which is probably the most significant argument against offshore drilling for oil?

asked by albert on June 10, 2014
11. ## biology

Can someone explain at what point during cellular respiration glucose is completely oxidized? Thanks.

asked by Anonymous on February 11, 2008
12. ## chemistry

freezin point of the solution 25.5g c7h11no7s in 1 x 100gh2O (nonionizing solute)

asked by cynthia on January 6, 2011
13. ## history

What is an historical idea or event that supports Douglas’s point of view?

14. ## english

how does the poet use the image to promote his point of view in the poem Vulture

asked by Lucie on October 6, 2009
15. ## chemistry

when should the temperature be recorded for an experiment in order to determine the boiling point?

asked by Zeenat on January 27, 2011
16. ## Calc

Suppose f(x,y) = A - (x^2 + Bx + y^2 +Cy). What values of A, B, and C give f(x,y) a local maximum value of 15 at the point (-2,1)? Any help would be appreciated!

asked by Brittany on April 4, 2011
17. ## Social Media

What protest and of-the-moment commentary songs have been most influential and successful at getting their point across?

asked by Sly on September 27, 2011
18. ## Visual Arts

I am finding a site so I can learn advanced three-point perspective methods. Can you help me?

asked by Anonymous on December 2, 2008
19. ## Maths

How would you work out when this function turns and goes in a different direction? (like a turning point for a parabola): s=0.2t(t-5.1)(t-9.1)

asked by alexis on October 1, 2015
20. ## Physics

Two point charges of magnitude 2.0 X 10^-7 C and 85 X 10^-8 C are placed 12 cm apart .What is the field intensity of each charge at the site of other ?

asked by Prashant on May 30, 2015
21. ## life science

What is the highest point on earth, which is topped by Ordovician marine limestone

asked by koleycole on May 31, 2010
22. ## geometry

which set of ordered pairs has point symmetry with respect to the origin (0,0) 1- (-12,5), (-5,12) 2- (-12,5), (12,-5) 3- (-12,5), (-12,-5) 4- (-12,5), (12,5)

asked by kyle on July 16, 2014
23. ## Chemistry

25g of ethanol is dissolved in 1.50 kg of whater. what will the boiling point of the solution be?

asked by Sandra on May 13, 2012
24. ## Geography AS

Why is the distribution of the worlds Population uneven? please could somebody point me in the right direction, it would be a big help. thank you!

asked by Sam on September 20, 2007
25. ## science

how does(what is the chemistry involved) k2so4 raise the boiling point of h2so4

asked by stephen on January 30, 2011
26. ## chemistry

What is the freezing point of a solution of 5grams of CaCO3 and 10ml of H20?

asked by caren on February 28, 2010
27. ## Math

So, there's a quadrilateral ABCD How would I find how long AD are? The point for A is (4,4) for D s (2,1) Is there some way to solve this without using a formula?

asked by Amy on October 10, 2010
28. ## economics

consumer and producer surplus at equilibriun point explain through graph?

asked by arshi on March 9, 2010
29. ## trig

P(2, 9) is a point on the terminal side of è in standard position. What is the exact value of tan è?

asked by Parker on September 26, 2011
30. ## physics

A pendulum is 1.0 m long and is drawn aside 30.0* and let go. Find the velocity at the lowest point.

asked by Aurora on November 22, 2010
31. ## physics

A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface

asked by Ariel on May 6, 2010
32. ## physics

A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface

asked by Ariel on May 6, 2010
33. ## Algebra

A taco stand sells tacos for \$3.35 easch. The stands expenses for the day are \$210. Define our variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your

asked by anne on May 30, 2016
34. ## precalculus

Sin(x+y)cos(x-y)= 1/2sin2x+ 1/2 sin2y Help please I have no idea how to do this because my math class never did it but while making the final review for the chapter I was assigned, I put this one in it. They are going to all ask me how to do it.

asked by Dustin on January 15, 2015
35. ## Physics

In an action movie, the villain is rescued from the ocean by grabbing onto the ladder hanging from a helicopter. He is so intent on gripping the ladder that he lets go of his briefcase of counterfeit money when he is 130above the water. If the briefcase

asked by Michelle on September 13, 2012
36. ## chem--buffers

Calculate [H30+] in a solution that is 0.0525M HCl and 0.768M NaC2H3O2. Ka(HC2H3O2)= 1.8 x10^-5. the way i did it is that i used the given molar of HCl to find the moles of Hydronium in the acid, and then i used that to find the moles of OH- in it, using

asked by Rav on March 7, 2010
37. ## Chemistry

I keep calculating the square root of 3RT/M, and am not worrying about the temperature. I keep using 238 and 235 as my M when I do calculate it for both isotopes. Then I end up getting 1.00 as my final answer. That can't possibly be correct, can it? The

asked by Jess on November 10, 2010
38. ## Chemistry

If 50.00mL of 1.10M NaOH is added to 25.00mL of 1.86M HCl, with both solutions originally at 24.70 degrees Celsius, what will be the final solution temperature? (Assume that no heat is lost to the surrounding air and that the solution produced in the

asked by Tasnim on October 5, 2012
39. ## chemistry 121

If a solution of 0.5 M HOAc dissociates as follows: HOAc + H2O „® H3O+ + OAc-, what is the final [H3O+] in the solution? Ka for HOAc = 1.8„ª10-5. What is the pH of the above solution? What is the Kb for HOAc? not sure of the initial set up please

asked by Nicole on May 5, 2015
40. ## geometry

Find the value of x in each right triangle. A.) short leg= 8 hyp= x and one angle equals 42 B.) short leg= 12 long leg= x and one angle equals 67 please help!!! i have a final tomorrow

asked by monique n on June 2, 2010
41. ## Physics

A 5.5 kg object with a speed of 4.0 m/s collides head-on with a 13 kg object moving toward it with a speed of 3.0 m/s. The 13 kg object stops dead after the collision. (a) What is the final speed of the 5.5 kg object? m/s (b) Is the collision elastic? Yes

asked by Anonymous on October 29, 2014
42. ## chemistry

solve for the new pressure when each of the following temperature changes occurs, with n and V constant: b. an aerosol can has a pressure of 1.40 atm at 12 celcius.what is the final pressure in the aerosol can if it is used in a room where the temperature

asked by Jetta on June 27, 2010
43. ## Chemistry

A balloon is filled to a volume of 1.0 102 mL at a temperature of 38.0°C. The balloon is then cooled at constant pressure to a temperature of 1.00 multiplied by 102 K. What is the final volume of the balloon?

asked by Brittney on June 11, 2010
44. ## Spanish

Hey, can someone please proofread my Spanish? Thanks. SPANISH: La decisión mejor de mi vida fue de venir a la Universidad de la Carolina del Sur de Chapel Hill para el colegio. Tomé la decisión en abril, pero la decisión no fue fácil. Cuándo yo

asked by JYD on November 4, 2006
45. ## economics-to Ms Sue OR ANYONE

I HAVE TO PREPARE A PROJECT ON 'CONSUMER AWARENESS'(CLASS 10TH). SO CAN YOU PLZZZ TELL ME THAT WHAT IS TH NEED OF CONSUMER AWARENESS IN TODAY'S WORLD?& HOW CONSUMERS ARE EXPLOITED? &SOME MORE INFORMATION ABOUT 'CONSUMER AWARENESS'. ALSO PLZZZ GIVE SOME

asked by bhavna on June 11, 2006
46. ## Creative Writing

Write a minimum of a 500 word-essay or a minimum five-stanza poem using Definition or Classification and Division. (Note: If the poem is free verse, it must be at least 400 words.) Be sure to follow the developmental methods presented in this lesson. Your

asked by y912f on November 19, 2009
47. ## Physics

a merry-go-round of radius 2 m and a moment of inertia 651 kgmm is stationary. a 78 kg woman runs at 1.6 m/s and jumps on tangentially to the rim of the merry-go-round. what is the final angular velocity of the merry-go-round?? 0.383 rad/s? 17.672 rad/s?

asked by Anonymous on April 4, 2016
48. ## maths,science, physics

A small cart of mass 300g when emty can move freely on a horizontal surface. The cart contains 100g of sand and moves initially with speed of 18cm s^-1. a)what would be the speed of the cart if a further 200g of sand were dropped vertically into it from a

asked by Oxy on June 5, 2016
49. ## TO ALL STUDENTS

Please remember that, even though it's holiday time and many tutors are away, this is still a website for homework questions, not riddles (see the link for riddles at the bottom of the main page), not personal questions, not nonsense, etc. Please remember

asked by Writeacher on December 25, 2006
50. ## English-Ms. Sue

Ms. Sue, you know the paragraph I did yesterday right, well I just want to change the the starting/introduction. I want to make it sound more interesting. I don't know if what I wrote makes sense(in the beginning) Could you show me another way to put it

asked by Sara on February 10, 2010
51. ## Chemistry

Posted by Hannah on Saturday, April 18, 2009 at 3:05pm. Find the pH of a 0.010M solution of NH4ClO4 and the pH of a 0.010M solution of NH4C2H3O2. Responses * chemistry - Anonymous, Saturday, April 18, 2009 at 3:36pm after finding the ph of the

asked by Anonymous on April 18, 2009
52. ## Physics

A thin stick of mass M = 3.1 kg and length L = 1.6 m is hinged at the top. A piece of clay, mass m = 0.7 kg and velocity V = 4.0 m/s hits the stick a distance x = 1.20 m from the hinge and sticks to it. 1. What is the angular velocity of the stick

asked by Nika on February 12, 2014
53. ## physics

A rescue helicopter lifts a 85.2-kg person straight up by means of a cable. The person has an upward acceleration of 0.764 m/s2 and is lifted from rest through a distance of 12.5 m. (a) What is the tension in the cable? How much work is done by (b) the

asked by shaknocka on February 28, 2011
54. ## Physics? clueless on what to do

Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus? If so where? Vi= initial velocity vf=final velocity a= acceleration d=distance t=time I found out

asked by Soph on September 23, 2012
55. ## AP Physics

Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus? If so where? Vi= initial velocity vf=final velocity a= acceleration d=distance t=time I found out

asked by Soph on September 23, 2012
56. ## physics

A 15 kg crate is held with a rope at the top of a metal ramp that has an incline of 25(degrees) with the horizontal. The rope breaks and slides down the ramp a distance of 5.50 meters before it hits the floor. If the coefficient of friction between the

asked by taylor on February 24, 2011
57. ## physics

A rescue helicopter lifts a 85.8-kg person straight up by means of a cable. The person has an upward acceleration of 0.643 m/s2 and is lifted from rest through a distance of 13.1 m. (a) What is the tension in the cable? How much work is done by (b) the

asked by Anonymous on November 4, 2013
58. ## Algebra 2

The problem is 3x^2 - 26 + 35 (We have to factor it!) So, I did the problem, but I'm not sure how to write the final answer. This is what my problem looks like so far: 3x^2 - 26 + 35 (3x^2-21x)-(5x+35) 3x(x-7)-5(x+7) and this is where I have the problem. I

asked by Hal on November 16, 2011
59. ## math

the graph of y=f(x) is transformed into y=-f(1/3x+9)+8. a.Describe the transformations in correct sequence. b.Is there any other sequence of transformations that could produce the final graph? If so, describe all possible ones.

asked by gal on March 18, 2015

Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

asked by ali on November 26, 2015
61. ## chemistry

100 mL of is initially at room temperature (22)C. A chilled steel rod at 2 C is placed in the water. If the final temperature of the system is 21.2 C, what is the mass of the steel bar? Specific heat of water = 4.18J/g(C) Specific heat of steel =

asked by Lilit on October 20, 2008
62. ## statistics

Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

asked by ali on November 26, 2015
63. ## Biochemistry

1. Given the following equation: Glycerol-3-phosphate glycerol + Pi Go’ = -9.7 kJ/mol At equilibrium the concentrations of both glycerol and inorganic phosphate are 1 mM. Under these conditions, calculate the final concentration of glycerol-3-phosphate.

asked by Angela on February 11, 2013
64. ## Chemistry Urgent

95.0mL of H2O is initially at room temperature (22.0∘C ). A chilled steel rod at 2.0∘C is placed in the water. If the final temperature of the system is 21.3∘C , what is the mass of the steel bar? Specific heat of water = 4.18 J/g⋅∘C Specific

asked by Anna on March 11, 2014
65. ## phycis

A cylindrical tank has a tight-fitting piston that allows the volume of the tank to change. The tank contains 0.5m^3 of air at a pressure of 2*10^5 Pa. The piston is slowly pushed in until the pressure of the air is increased to 2.5*10^5 Pa. If the

asked by joann on December 13, 2010
66. ## Physics

Superman is flying at an initial velocity of 33.5 m/s [N] when he decides to slow to 10.0 m/s [N] in a time of 8.05 s. He then continues at this velocity for 12.4 s before accelerating at 2.35 m/s^2 [N] until he reaches a final velocity of 23.8 m/s [N]. a)

asked by David on March 6, 2019
67. ## Chemistry

Suppose that 1.00 g of rubbing alcohol (C3H8O) evaporates from a 57.0g aluminum block If the aluminum block is initially at 25 C, what is the final temperature of the block after the evaporation of the alcohol? Assume that the heat required for the

asked by Haley on April 20, 2012
68. ## writing for HR

I am to Create a diagram in PowerPoint® or Word mapping job opportunities starting from, or advancing to, the position focused on in your final project. How do I create this word map or diagram in powerpoint? I know what I want to say but how do I do this

asked by Christi on November 5, 2008
69. ## physics

The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. initial velocity accerlation

asked by thaokieu on January 30, 2011
70. ## English

Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow. People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear

asked by quick help needed on May 1, 2016
71. ## English

Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow. People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear

asked by quick help needed on May 7, 2016
72. ## English

Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow. People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear

asked by Martin1162 on October 27, 2016
73. ## English

Literary Analysis: Character and Characterization Read the selection. Then, answer the questions that follow.People who don’t know Harry tend to underestimate him. They cast a skeptical eye on his typical outfit: ragged jeans and shirts that bear

asked by vickie on September 26, 2013
74. ## pre cal

g(x) = x^2 - x -12 / x + 1 I know the division brings it to x -2 + -10/x + 1 but these are the steps I have to follow 1. factor the numerator and denominator and find its domain. ( I know 0 is not in domain) 2. write in lowest ermas as p(x)/ q(x) and find

asked by Amy on December 9, 2011
75. ## Math (PreCalculus)

A spring with a weight attached is oscillating. The weight (which is attached at the bottom of the spring) is 5 feet from a 10-foot ceiling when it’s at rest. The motion of the weight can be described by the equation: y=3sin(pi*t - pi/2) , where y is the

asked by Steve on December 25, 2014
76. ## Algebra

In the metric system there are two official temperature scales: degree Celsius and kelvin. The kelvin temperature scale is obtained by shifting the Celsius scale so of any heat whatsoever. An equation about the relationship between the two scales follows:

asked by KG on September 25, 2014

I have to answer questions about Parts of a nonfiction book. example:second entry in index Where on line can I find a book that I can look in the entire book.

asked by Janice on February 25, 2009

I need help understanding whether salaries are put into all categories of a program budget,line-item budget,and a functional budget matrix?

asked by Holly on September 27, 2013
79. ## health

It's my first time writing a research paper, I'm not sure what it should look like and was hoping someone would have an example of one on line. I have four questions I need to answer and if I could see an example of a paper written it would really help me

asked by Teresa on August 2, 2010
80. ## calculus

graph the following function using transformations. Be sure to graph all the stages on one graph. state the domain and range. y= -3/x/+1 NOT QUITE SURE HOW TO MAKE THE STRAIGHT UP AND DOWN LINE, INSTEAD OF THIS--/.

asked by Heather on December 12, 2012
81. ## Math

write the slope intercept form of the equation of the line with the following conditions. 19. passing through (4,-2) and (-8, -5). 21. passing through (-5,9) and parallel to 3x+y=1. 23. passing through (4,1) and perpendicular to 2x-y=8.

asked by Keonn'a on February 6, 2018
82. ## physics

For which of the following motions of an object must the acceleration always be zero? I. Any motion in a straight line II. Any free fall motion III. Any motion in a circle it can be more than one :P

asked by ashley on February 4, 2014
83. ## social studies

The question deals with a time line. I know the Scientific Revolution , French Revolution and the Industrial Revolution from the 1500's to 1945.

asked by tony on November 12, 2010
84. ## Calculus

Find an equation of the tangent line to the curve f(x) = (sins)^2 + 2tanx at x= pi/4. I worked through it and got y = 5x + 5/2 for my answer, but the answer key says that it is y - 5/2 = 5(x - pi/4). Why is the pi/4 in the answer? Thanks for any help!

asked by Lucy on October 19, 2014
85. ## Science

The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.Which of these observations of Barnard’s Star is most likely accurate? * 1 point Captionless Image A Barnard’s Star is less bright than

asked by jessica thompson on October 4, 2018
86. ## HELLLLP!

How does this read as the first part of a debate? Ladies and Gentlemen, the United States wants to have its cake and eat it too. Dictatorships stand for everything that the United States opposes. Tyranny, repression and at times they lack fundamental human

asked by Mahalia on May 15, 2011
87. ## Literature

In "Grass", the grass is different. Which line from the poem shows this indifference? "I am the grass." "Where are we now?" "Shovel them under and let me work"

asked by sammiexo on May 17, 2017
88. ## Algebra

Find the equation with the given properties. Express the equation in slope intercept form. Containing points p=(-4,-2) and Q=(-2,1) What is the equation of the line? y=

asked by Jenn on April 14, 2013
89. ## Find the equation....

Find the equation with the given properties. Express the equation in slope intercept form. Containing points p=(-4,-2) and Q=(-2,1) What is the equation of the line? y=

asked by Lauren on April 14, 2013
90. ## geometry

Identify the property of congruence. If

asked by kevin on October 3, 2007
91. ## science

a particle travels in a straight line ,such that for a short time 2s

asked by bk4 on June 28, 2012
92. ## Math

I need help with this specific proof: Given: CE bisects Angle ABD FB and CE are strraight line segments Prove:angle x = Angle a

asked by Leah on February 8, 2007
93. ## english / compare & contrast essay

Hey guys!! I was hoping someone could critique/view/edit me essay for me? :) It's a compare and contrast essay on Mother Tongue by Amy Tan, and How to Tame a Wild Tongue by Gloria Anzaldúa. I'm a hs junior but i'm also taking college english~critical

asked by Amy on January 27, 2012
94. ## Instructional materials:Their preparation and Use

if you could help please do 3. A document camera is more versatile than an opaque projector because you can use it to A. record sound. B. project three-dimensional objects. C. display book pages on a screen. D. view colored items. 4. Which one of the

asked by beth on June 9, 2011
95. ## easy geometry

Can you please show you solution and final answer here. Thanks! 1.Find the altitude,perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm, 10 cm and 30 cm. 2. The formula A=P(a+r)^2 is used to find the amount of money A in an

asked by cyrus on December 14, 2014
96. ## science

A diesel engine's piston compresses 16 cm3 of fuel-air mixture into 1 cm3. The pressure changes from 1 atmosphere to 48 atmospheres. If the initial temperature of the gas was 305 K, what was the final temperature? Note: As long as the units for pressure

asked by jasmine on June 21, 2011
97. ## History

Marcus Whitman chose a site among the cayuse, for from the Nez Perce who requested his services. Analyze how Marcus Whitman's selection of the Waiilatpu mission site revealed something of his character and future work? Explain Explain how settlers

asked by rosalin on June 5, 2018
98. ## physics

A rock is tossed straight up with a velocity of 37.1 m/s. When it returns, it falls into a hole 18.8 m deep. What is the rock's velocity as it hits the bottom of the hole? Responses The gain in kinetic energy equals the loss of potential energy. (1/2) M

asked by Vishnu on October 8, 2008
99. ## Chemistry

Samples of neon and helim are placed into separate containers connected by a pniched rubber tube as shown. When the clamp is removed and the gases are allowed to mix, what is the final pressure of the neon? The volume of the tube is negligible. 5.00L, 654

asked by Miley on February 28, 2008
100. ## Math

can someone please help me with the following 2 questions and how to do them. i have a math final tomorrow!! 1. Curtis runs 1 mph slower then Mary. After 2 hours of running in opposite directions, they are 30 miles apart. How fast had Curtis been running?

asked by Sam on December 14, 2009