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 238
1. calulus

The volume of the solid obtained by rotating the region enclosed by y=x^2 y=2x about the line x=2 can be computed using the method of disks or washers via an integral The volume is V

asked by cjones on May 4, 2012
2. Calculus

The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(ex) is rotated about the x-axis. What is the volume of the generated solid? Got 2.8 and .79 very confused

asked by Ali on August 4, 2015
3. math

Use Green's Theorem to evaluate the line integral along the given positively oriented curve. integral of xy2 dx + 4x2y dy C is the triangle with vertices (0, 0), (2, 2), and (2, 4)

asked by sara on November 11, 2014
4. Algebra

How far in miles is a line of 1,000,000 pennies. Please show chart with 5 instances. Define a variable and write an algebraic expression.

asked by Matthew on September 11, 2011
5. consumer

Choose the best answer. Carl Cornfield purchases new equipment. After reducing the cash line, where else would Carl put an entry for this purchase?

asked by Anonymous on September 1, 2016
6. Math

Stretch your thinking. Write a subtraction equation with a difference of 54.57 . Then draw a number line to show between which two whole numbers the difference lies.

asked by Anonymous on October 21, 2014
7. calculus 2

Consider the solid obtained by rotating the region bounded by the given curves about the line x = -3. y = x^2 , x = y^2 Find the volume V of this solid. I keep finding the wrong answer.

asked by angel on February 16, 2010
8. Physics

According to Boyles' law, PV = constant. If a graph is plotted with the pressure P against the volumeV, the graph would be a a.straight line b.parabola c.hyperbola d.ellipse

asked by Tiffany on December 16, 2009
9. AP physics

The sun is below us at a magnitude of nearly a line with the earth center. Are we then Heavier at midnight due to the sun's gravitational force on us, than we are at noon? Explain

asked by Stuck on November 6, 2016
10. Physics

A car traveling in a straight line has a velocity of 6.03 m/s at some instant. After 6.89 s, its velocity is 10.6 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2

asked by Alexus on September 25, 2012
11. psychology

If you are wearing goggles that displace objects 30 degrees to the right, predict what will happen if you try to walk along a straight line on the floor. Explain why you think this will happen.

asked by Murph19 on November 9, 2015
12. Maths

Find the coordinates of intersection for the following of line and curve x^2+2y^2=36 x+y=6 I know I hav to do it simultaneously but Im struggling Please explain step by step so I know for future reference Thanks

asked by Anonymous on November 12, 2015
13. wgu qlc

isosceles proof prove that angle dgf is isoceles given line eg bisects angle def edg is congruent to efg

asked by shonda on September 23, 2013
14. calculs

Find the volume when the plane area bounded by y=-x^2-3x+6 and x+y-3=0 is revolved about (1) x=3 and (2) about y=o B. Find the volu6 of focus generated by revolving the circule x^2+y^2=4 about the line x=3

asked by archaeology khan on March 18, 2017
15. physics

A particle is travelling on a straight line with constant acceleration. It covers 6m in the 4th second and 7m in the 5th second. Fine its acceleration and initial speed.

asked by skenge on February 15, 2013
16. physics,dynamics

The acceleration of a particle along a straight line is defined by a = (2t - 9) m/s2, where t is in seconds. At t = 0, s = 1 m and v = 10 m/s. When t = 9 s, determine (a) the particle’s position, (b) the total distance traveled, and (c) the velocity.

asked by Anonymous on March 7, 2013
17. tech school math

this is the answer to one of my questions. This is an on-line class. I don't know how they got the answer. I sent an email to the teacher but no response yet. 121pi/6 - 121 sqrt3/4 = 11.0 m squared

asked by Lisa on July 12, 2015
18. AP Physics

A car traveling in a straight line has a velocity of 3.24 m/s at some instant. After 3.28 s, its velocity is 8.18 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2 .

asked by JB on November 6, 2015
19. Physics

A car traveling in a straight line has a velocity of 2.36 m/s at some instant. After 3.09 s, its velocity is 9.33 m/s. What is its average acceleration in this time interval? Answer in units of m/s2

asked by tgarci10 on September 4, 2012
20. Physics

If a pronghorn antelope accelerates from rest in a straight line with a constant acceleration of 1.4m/s^2, how long does it take for the antelope to reach a speed of 23 m/s? Ans in s

asked by JP on January 29, 2010
21. Geometry

Hello! Can someone please help me with this question, I'm super confused! The endpoints of line AB are A(9,4) and B(5,-4). The endpoints of its image after a dilation are A1(6,3) and B1(3,-3). Find the scale factor and explain each of your steps.

asked by Kitty on November 30, 2017
22. trig

From a tower 57 ft high two objects in a straight line from it are sighted at angles of depression of 27degrees and 40degrees5' respectively. Find the distance between the two objects.

asked by renzkie on January 2, 2014
23. math

can someone please help me with this question. Given the funtion f(x)= 3x-9 a. find the rate of change between the two stated values for x: 7 to 8 b. find the equation of a secant line containing the given points: (7,f(7)) and (8,f(8)) I think I have

24. Physics

A horizontal overhead power line carries a current of 500A in west to east direction. What is the magnetic field 1.5m below? What is it's direction?

asked by Shifa on May 4, 2015
25. physics

A particle is travelling on a straight line with constant acceleration. It covers 6m in the 4th second and 7m in the 5th second. Fine its acceleration and initial speed.

asked by skenge on February 15, 2013
26. physics

A particle is travelling on a straight line with constant acceleration. It covers 6m in the 4th second and 7m in the 5th second. Fine its acceleration and initial speed.

asked by skenge on February 15, 2013
27. Calculus

Volume created when the area bounded by the curve y = 1/x, the x-axis, and the lines x = 1 and x = 4 is rotated about: a) the x-axis: 2.356 units^3 Is this correct? b) the line y = 5 I'm not sure how to do this one.

asked by Aria on May 27, 2016
28. computers

Which type of chart would best illustrate each department's sales as a percentage of the overall store sales? Answer a. area b. bar c. line d. pie

asked by Anna on May 2, 2013
29. Calculus

The base of a solid is the region bounded by the parabola y^2=4x and the line x=2. Each plane section is perpendicular to the x-axis is a square. What id the volume of the square?

asked by Amanda on April 3, 2011
30. analytical geometry

if (l1,m1,n1),(l2,m2,n2),(l3,m3,n3) are the direction cosines of three mutual perpendicular lines,show that the line whose direction ratios area l1+l2+l3,m1+m2+m3,n1+n2+n3 make equal angles with them

asked by manjula on January 16, 2013
31. English

In “Summer,” the line “Bugs buzzin from cousin to cousin” illustrates which sound device? A. alliteration B. assonance C. onomatopoeia D. all of the above I believe it is D, Do you agree?

asked by Annie on November 28, 2014
32. Math

My question is “The line passes through the points (-4.5, 2) and (6.3, 5.8).” I have to create an equation in y=mx+b form for these points. Can someone please help me. I don’t know how to solve this, because I wasn’t taught it. Please just give any

asked by Someone help me pls on May 30, 2018
33. physical science

The density of copper is 8.92 g/cm (cubed). If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be?

34. calculus

the displacement (in meter) of a particle moving in a straight line is given by the equation of motion s=5t^3+4t+2, where t is measured in seconds. Find the velocity of the particle at t=3.

asked by L.J on November 17, 2011
35. Physics

5. Three charges, Q1 = 10µC, Q2 = 8µC and Q3 = 7µC are lying along a straight line. Q1 is one meter away from Q2 and Q2 is one meter away from Q3. Find the net electric force on Q1

asked by Mark jay on April 20, 2017
36. physical science 2

A block is dragged at constant velocity in a straight line path across a level surface by force of 6 N. What is the friction between the black and the surface? a: 6 N B: less than 6 N C: More than 6N d: ZERO

asked by ellen on January 29, 2011
37. physics voltage

If one lamp of a group of five identical lamps in series is removed, the voltage across the empty socket becomes equal to the line voltage, rather than remaining one-fifth of it. Why?

asked by Anonymous on February 21, 2012
38. algebra

What is the equation of the line that passes through (1/2, -1/2) and (1/9, 3/9)? I keep on messing up w/ the complex fractions. slope: (-9/18 - 6/18)/ 9/18-2/18 =(-15/18)/ (7/18) this is where i get stuck how do i simplify these so i can substitute them

asked by Mary on January 13, 2010
39. PreCalc

Find the line of the equation that hits y=4x^2-20 when x= -5 that is perpendicular to 5x-6=3y My solution does not graphical show perpendicular lines, but algebraically it works lol Help!

asked by Lynnette on September 23, 2010
40. Calculus

Consider the function h(x)=e^x. Determine the equation for the tangent line at x = 1. All values must be exact (no decimal values). i know the answer is just e but how do i prove it? by just subbing 1 into x? it cant be that easy..

asked by Anonymous on November 21, 2018
41. Physics

The maximum gauge pressure in a hydraulic lift is 19.0 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 32.0 cm?

asked by Anonymous on January 27, 2010
42. Science

The density of copper is 8.92 g/cm to the third power. If you plotted the mass of copper in grams versus the volume in cubic centimeters, what would the slope of the line be

asked by TJ on September 23, 2010
43. calculus

On the graph of f(x)=6sin(8πx), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the slope of the line which passes through P and Q.

asked by Brittany on January 15, 2011
44. Astronomy

Given the random orientation of planetary orbits relative to our line of sight, do you expect most or only a minority of all planetary systems to show transits?

asked by g on November 24, 2014
45. physics

The distance from an observer on the plain to the top of a nearby mountain is 5.3km, and the angle between this line and the horizontal is 8.4 degrees. How tall is the mountain?

asked by britt on November 1, 2009
46. computer science

I need help with c++ on the codeblocks. when i run the program with lines of code, i get this warning. warning: command line option "-Wmain" is valid for C/ObjC but not for C++ can anyone tell me what this mean???

asked by jaylin on March 8, 2010
47. analytical geometry

if (l1,m1,n1),(l2,m2,n2),(l3,m3,n3) are the direction cosines of three mutual perpendicular lines,show that the line whose direction ratios area l1+l2+l3,m1+m2+m3,n1+n2+n3 make equal angles with them

asked by manjula on January 15, 2013
48. Math

On the graph of f(x)=2sin(6πx), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the slope of the line which passes through P and Q.

asked by Cameron on January 23, 2016
49. stats

7. Calculate b0 and b1 and make an equation of regression line for the set of data given in Table 3 Table 3 x y 1 12 2 15 3 16 5 18 6 21 8 23 A=3.135451505 B= 14.76588629 R^2=.8651908126 R=.9301563377

50. math

help please A line of credit at 15% interest compounded monthly, with a monthly payment of \$60 a) How long will it take to pay off the loan? b) What is the total paid back?

asked by latrell on December 12, 2017
51. physics

On a velocity versus time graph the quantity the area between the graph line and the x-axis represents the change in _______ of the object .

asked by kile on May 22, 2010

How long do you have to get the ball across the midcourt line? is it 8 seconds Look for backcourt violation. http://www.usabasketball.com/rules/rules.html

asked by Electra on October 18, 2006
53. science asap

Air pressure decreases as altitude increases ^ which one goes on the horizontal axis and which one goes vertical axis? how did you choose this scale? (This is for a line graph)

asked by Anon on April 7, 2013
54. physics

The maximum gauge pressure in a hydraulic lift is 18 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 22 cm?

asked by ed on November 18, 2013
55. PHYSICS

A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by KS on April 22, 2015
56. physics

question: your propessor enters a dogsled race during the winter break to get started she pulls the sled (total mass 80kg) with a force of 180N at 20degrees the sled moves 5m along horizontal. find the work she does find the final speed of the sled after

asked by jerome on August 25, 2014

A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by KS on April 22, 2015
58. Physics

A 64.4-kg skateboarder starts out with a speed of 2.11 m/s. He does 81.6 J of work on himself by pushing with his feet against the ground. In addition, friction does -289 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by P on December 5, 2012

A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by KS on April 22, 2015
60. physics

A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by Tyler on January 12, 2017
61. physics

A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The

asked by Cameron on January 11, 2017
62. Physics

A driver in a car traveling at a speed of 55.4 mi/h sees a deer 116 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assuming that the deer does not move in the meantime). I

asked by Rachel on January 25, 2015
63. Social Psychology

Explain altruism from your point of view. Do you believe true altruism exists? Why or why not? Give one example, of yours are from someone else’s, of altruistic behavior (real or perceived). Hi Jiskha, I was able to explain altruism from my point of

asked by Sharon on September 10, 2011
64. chemistry

A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.22 ml?

asked by Anonymous on February 10, 2014
65. Chemistry (concentration)

A 200 mL NaCl solution with a concentration of 4.0 g/L is mixed with a 600 mL solution containing 8% NaCl (m/v). What is the final concentration of salt in the solution in g/L?

asked by Summer on March 24, 2018
66. MATH214

If is a line whose equation is y = 2x - 1, find the equation of the image of under each of the following translations: a. (x, y) → (x, y - 2) b. (x, y) → (x +3, y) c. (x, y) → (x - 3, y + 2)

asked by Rebecca on March 4, 2010
67. math

A circle with the equation (x + 4)2 + (y - 3)2 = 9 is reflected over the line y = -1. What is the equation of the image?

asked by Callie on January 22, 2012
68. Geometry

7. the vertices of a triangle are p(-7 -4) q(-7,-8 and r(3,-3) name the vertices of the image reflected across the line y=x A. P'(4,7),Q'(8,7),R'(3,-3) B. P'(4,-7),Q'(8-7),R'(3,3) C. P'(4-7),Q'(-8,-7),R(-3,3) D. P'(-4,7),Q'(-8,7),R'(-3,-3) I really need

asked by dea on October 5, 2015
69. Calc

Find the points on the graph of y = 1/x where the graph is parallel to the line 4x + 9y = 3.

asked by Michael on December 3, 2010
70. Geometry

The endpoints of a line segment are at the coordinates (4, -2, 5) and (6, 4, -3). What is the midpoint of the segment? (-2, -6, 8) (10, 2, 2) (5, 1, 1) (-1, -3, 4)

asked by Arianna on February 4, 2016
71. math

write down the gradient and y-intercept of the line 2y=3x+10 step by step

asked by swendy on October 19, 2011
72. Geometry

Use the slope of AB to determine which line below, if any, is parallel to AB. A(1,8) B6,-4) a. y = 5/12x + 5 b. y = -5/12x + 5 c. y = 12/5x + 5 d. none

asked by Courtney on January 11, 2012
73. Algebra2

What are it's line of symmetry? 4x^2+y^2=9 my answer is it has 2 lines of symmetry, the x and y axis

asked by Steve on March 8, 2017
74. Geometry

13. A( -2, -5 ) => A' is a glide reflection where the translation is ( x, y ) => ( x + 7, y ), and the line of reflection is y = 2. What are the coordinates of A'? a.) ( 5, 9 ) b.) ( 5, -5 ) c.) ( -2, 2 ) d.) ( 6, 2 )

asked by Blaise on January 10, 2019
75. Geometry

P->P'(-8,-3) for the glide reflection where the translation is (x,y)->(x,y-5) and the line reflection is x=-5. what are the coordinates of P? (-8,-8) (-8,2) (-2,-3) (-2,2)

asked by Selena on October 29, 2014
76. math

If is a line whose equation is y = 2x - 1, find the equation of the image of under each of the following trans? a. (x, y) → (x, y - 2) b. (x, y) → (x +3, y) c. (x, y) → (x - 3, y + 2)

asked by Gabriel on March 5, 2010
77. further mathematic

find the gradent of the lime parallel to the line whose gradent is -3

78. Math

A(-3,3) A is a glide reflection where the translation is (x,y) (x+5,y), and the line of reflection is y=1. What are the coordinates of A' A.(2,-3) B.(-3,5) C.(5,1) D.(2,5)

asked by Roi on November 13, 2015
79. furthe math

find the gradent of the lind parallel to the line whose gradent is -3

asked by Anonymous on June 16, 2015
80. geometry

A(-3,3) A is a glide reflection where the translation is (x,y) (x+5,y), and the line of reflection is y=1. What are the coordinates of A' A.(2,-3) B.(-3,5) C.(5,1) D.(2,5)

asked by jenny on October 29, 2015
81. math

1. find the y-intercept of the equation y= -3x -5 2. find the slope of the line that contains C(-2, -3) and D(4,1)

asked by brooke on April 27, 2008
82. math

write slope equation for the line that passes though (10,-4) and has a slope of -3/10

asked by gloria on February 15, 2011
83. Geometry

A(-3,-3)-->A'is a glide reflection where the translation is (x,y)-->(x+5,y, and the line of reflection is y = 1. What are the coordinates of A'?

asked by Agnes on January 2, 2017
84. writing

When address to the staffs of the company, should the "To" line be All staff or All staffs?

asked by yvonne on July 25, 2008
85. maths

Write an equation of the line that is parallel to the equation 5x – 2y = 6, that passes through (4, -2).

asked by Jo on February 24, 2018
86. math- check me

Find the slope of the line graphed below. Points are (-4,-1) and (4,3) Is the slope 4/8 ?

asked by Joe on January 24, 2011
87. calculus

Show that if a,b does not equal 0, then the line with x-intercept x=a and y-intercept y=b has the equation: x/a + y/b = 1

asked by terra on September 1, 2011
88. Algebra

Find the value of x so that the line through the points has the given slope (2,2) and (x,9);slope: undefined

asked by Kevin on January 19, 2017
89. physics

whats the difference between line current and phase current

asked by vera on March 3, 2011
90. Calculus

What does the arc length formula give for the length of the line r(t)= for 0 ≤ t ≤ 1?

asked by Z32 on February 22, 2011
91. geometry

the vertices of a triangle are p(-7 -4),q(-7,-8),and r(3,-3).Name the vertices of the image reflected across the line y=x.

asked by tj on October 5, 2015
92. Math

Write an equation of the line with the given x- and y-intercepts. x-intercept: 3, y-intercept:5

asked by Ricky on January 17, 2008
93. Algebra 1

In the graph of the inequality X - 2y is less then or equal,to 4, which is a value for x on the inequality line and the x axis?

asked by Steve on December 20, 2014
94. Algebra

What is the answer on 13 - (-15) =? And how can i justify my answer in words with a number line?

asked by Fem on September 11, 2011
95. Math

What does the line -4x + 3y = -7 look like? horizontal vertical slanted right upwards slanted right downwards

asked by Jaslene on December 4, 2012
96. Geometry

a>p=a'(-3,-3) for the glide reflection where the translation is (x,y)>(x+5,y) and the line of reflection is y=1. What are the coordinates of a'?

asked by Steve on November 5, 2015
97. math

What does the line y = 3x - 7 look like? horizontal vertical slanted right upwards slanted right downwards

asked by Chely on December 1, 2012
98. Math

What is the scale and interval on a bar graph and line graph

asked by Jerald on March 27, 2013
99. Math

10. Find the slope of the line passing through the points (10, 0) and (0, 3). (Points : 1) -10/3 10/3 3/10 -3/10

asked by CC on June 7, 2011
100. Algebra

Find the slope of the given line. 2x + 3 = 0 Do I use the slope formula? I don't know how to do it. Thanks

asked by Jane on February 15, 2012