George

Newest questions and responses by George
1. math

A boy 1.2m tall, stands 6m away from the foot of a vertical lamp pole 4.2m long if the lamp is at the tip of the pole calculate the length of the shadow of the boy cast by the lamp Angle of elevation of the lamp from the boy, correct to the nearest degree

2. Geometry

Point Q is the midpoint of PS. Which of the following completes the statement

3. Math

The bearing of x from y is 070 and the bearing of z from y is 160, where x, y, and z are three points in the plane .if y is equidistant from x and z, find the bearing of z from x

4. math

Solve the equation. 138 = n + 38

5. Life Orientation

FOUR things that could be considered to promote humane farming practices.

6. math

Find the exact area between y=lnx and y=ln(x^ 2 ) for 4≤x≤8 .

7. accounting

Prepare general journal entries to record the following transactions for the Harris Company. (The company uses the balance sheet approach for recording bad debts expense.) 2010 Dec. 31 Recorded Bad Debts Expense, \$800 2011 Jan. 3 Wrote off Jal’s account

8. Physics

The average distance between Earth and the Sun is 1.5 ✕ 10^11 m. (a)Calculate the average speed of Earth in its orbit (assumed to be circular) in meters per second. (b)What is this speed in miles per hour?

9. Chemistry

What is the complete redox reaction of KMnO4 against (NH4)2Fe(SO4)2

10. Math

Find dy/dx x^2 + xy − y^3 = xy^2

11. Math

A deer population was measured to be 4000. Two years later , it was measured to be 4300. assume the population grows exponentially. A). Write an equation describe this situation. Find values of all constants. b) What will the population be four years after

12. Math

You invest \$500 at an annual interest rate of 6.75% compounded continuously. How long will it take y our money to double?

13. Math

A man gets a job with a salary of 37300 dollars a year. He is promised a 2550 dollars raise each subsequent year. His total earning for a 7-year period is

14. Math

For the arithmetic sequence with given first term 4 and common difference 4: its nth term is __________ its 10-th term is ________

15. science

The orbital radii of four planets in our solar system are shown in the following table. Orbital Radii Planet Orbital Radii (AU) W 5.2 X 0.72 Y 1.0 Z 19.1 Which planet is likely to experience the highest temperature? W X Y Z I think it is B.x but I am not

16. Math

A=0,4 ,B=-2,0 Find the vector AB in ℝ2?

17. Math

The force on an object is F =−21j . For the vector v =4i −j , find: (a) The component of F parallel to v : (b) The component of F perpendicular to v :

18. Math

For what value of x are 16i-12j+4k and xi-(x-1)j+k parallel?

19. Math

The force on an object is F =−21j . For the vector v =4i −j , find: a) The component of F parallel to v : (b) The component of F perpendicular to v :

20. Math

a)A man swims northeast at 5mph. Give a vector representing his velocity b)He now swims a river the same velocity relative to still water; the river's current flows north at 1.2 mph. What is the velocity relative to the riverbed?

21. Math

Find all vectors v in 2 dimensions having ||v ||=5 where the i -component of v is 3i vectors:

22. Math

Find a unit vector u in the direction opposite of ⟨−3,−9,−9⟩.

23. Math

For what value(s) of t does the equality ⟨t^3−12t,0.25t^2+4⟩=⟨0,7⟩ hold true? t=

24. Calculus

Show that f(x) = x^3 and g(x) = 200x^3 grow at the same rate.

25. math 11

Michaela has up to \$20 to spend on bottled water and orange juice for a group hike. It cost \$2 for each bottle of water and \$ 4 for each bottle pdf orange juice. write an inequality statement of this situation? 2x +4y< or equal to 20 Y < or equal to-1/2x

26. math 11

A pilot of a downed airplane fires the emergency flare into the sky. The path of the flare is modelled by the equation h=-0.096(d-25)^2 +60 where h is the height of the flare in meters when its horizontal distance from where it was propelled is d meters.

27. math

a)Find the time required to double the amount of an investment at an interest rate k, compounded continuously. b) Find the time required to double an investment at continuous rate of 6%.

28. math

Find the inverse Function? J(x)=2^x/(1+2^x)

29. differential Equations

laplace transform of f(t) = t sin (at) use integration by parts

30. geometry

These polygons are similar but not drawn to scale & Are the two triangles similar how do you know

31. math

Suppose Taylor win \$18000 in a lottery. If she invests half in a CD earning 4.2 % annual interest compounded quarterly and the rest in saving account earning 3.7% annual interest compounded monthly . How much money does she have after 10 years

32. math

You place \$11,000 in an account. You hope to have \$23,000 in the account after 15 years. What effective annual yield is needed to accomplish this?

33. math

The population of a colony of rabbits grows exponentially. The colony begins with 5 rabbits; 5 years later there are 310 rabbits. (a) Express the population of the colony of rabbits, P , as a function of time, t , in years. (b) Use the graph to estimate

34. math

Suppose y , the number of cases of a disease, is reduced by 11% per year. (a) If there are initially 10,000 cases, express y as a function of t , the number of years elapsed. (b) How many cases will there be 6 years from now? (c) How long does it take to

35. math

Find two numbers x, and y that add to 30, and for which 2x^2 +5y^2 is a minimum.

36. Math 115

Create a piecewise function of the following scenario where Upper D left-parenthesis t right-parenthesis is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 3 miles per hour for

37. Math 115

Create a piecewise function of the following scenario where Upper D left-parenthesis t right-parenthesis is the total distance walked (in miles) as a function of time t (in minutes): “You begin a walk from your home at a fast pace of 3 miles per hour for

38. differential Equations

Find general solution [t - sqrt(ty) ] dy/dt = y

39. Differential Equations

Find general solution. 2ty dy/dt = 3y^2 - t^2

40. differential Equations

solve initial value problem t dy/dt = y + sqrt(t^2 + y^2) , y(1)=0

41. differential Equations

solve the initial value problem and find the interval of existence... cos(y) dy/dt = -t sin(y)/ (1+t^2) , y(1)=pi/2

42. AP Calculus AB Part 2

The Riemann sum, the limit as the maximum of delta x sub i goes to infinity of the summation from i equals 1 to n of f of the quantity x star sub i times delta x sub i , is equivalent to the limit as n goes to infinity of the summation from i equals 1 to n

43. Chemistry

Find the amount of mole solute in solution of concentration 2.5moldm^-3 and volume of 500cm^3 Hint to solve Amount = C x V

44. math

hi, one question i have is for the following problem:"Two families meet at a park for a picnic. At the end of the day, they part ways. Family A leaves 15 mins after family B and travels east at an average speed of 42mph; while, family b travels west at an

45. College Physics

A mass m is acted on by a resultant force of 28.6 N in the upward direction. The acceleration of the mass is 5.72 m/sec2 upward. What is the mass?

46. math

Find f(infinity) for the complex function: 1/z+3

47. Physics

A charge of -17 nC is on the X axis at the origin. A charge of -24 nC is on the X axis at 11 cm. Find the electric field (magnitude and direction) at 19 cm on the X axis. I believe to solve this problem, the equation E = kC (q1/r1^2) must be used for each

48. English

Many plays are written about family situations because why?

49. Physics

A ray of light with wavelength 589 nm passes through an unknown material with a velocity of 1.94 x 10^8 m/s. What is the material? I think this problem has something to do with Snell's law, but there is no given angle of refraction so I don't know how to

50. Math

Describe the cross sections formed as the plane intersects the interior of the sphere but moves away from the center

51. Pre calc

The population of a Midwestern city decays exponentially. If the population decreased from 900,000 to 800,000 from 2003 to 2005, what will be the population in 2008? I thought it was 7542 but it is wrong can someone please help me thank you

52. algebra

a ladder is placed 5ft away from a house. the ladder comes up to 12ft on the side of the house. how long is the ladder?

53. Physics

A piece of metal of volume 250 centimetre cube floats in water when 85 percent of its volume is under water.Calculate the upthrust on the metal. [pw=1.0gcm^-3]

54. Linear Relations MATHS

If A = (-4,6) and B = (6,-7), find: (a) the coordinates of the point P on the line segment AB such that AP:Pb = 3:1 (b) the coordinates of the point P on the line AB such that AP:AB = 3:1 and P is closer to point B than to point A

55. Geometry

Hi I was having some problem with this question, its been a while since I had been in geometry. I think you foil, but Im not sure. Solve for X. 2(x+4)(x+3)= 3(x+2)(x-1)

56. precalculus

Given: r = 4/-2-6sintheta What type of conic does this represent? ________________________________________ Circle Ellipse Hyperbola Parabola

57. Math

Movie starts at 5:20 it is a 1 hour and 50 minutes long. What time does the movie end?

58. precalculus

What does the equation y = a(x - h)2 + k, a ≠ 0 represent?

59. Physics

Two bumper cars crash head on in an elastic collision. One car #1 was moving 2.5 m/s west and car #2 was moving 3.7 m/s east. Each car has a mass of 254 kg. What are the final velocities after the collision? I think this problem is supposed to be solved

60. Physics

Two bumper cars crash head on in an elastic collision. One car #1 was moving 2.5 m/s west and car #2 was moving 3.7 m/s east. Each car has a mass of 254 kg. What are the final velocities after the collision? I think this problem is supposed to be solved

61. geometry

construct an isosceles triangle and construct Sierpinksi's triangle. Repeat the pattern three times. What segment of a triangle does this pattern make use of over and over again?

62. Physics (for Damon)

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m I have found the following: Spring constant: 63.7N It would take 576J to

63. Physics

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value

64. Physics

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value

65. management

examine the impact of one's family background and setting to work place behaviour?

examine the impact of one's family background and setting to work place behaviour?

67. principle of management

examine the impact of one's family background and setting to work place behaviour?

68. Maths

1. For what values of a will the straight line y=ax+1 have ONE intersection with the parabola y=-x^2-x-8?

69. Geometry

The lengths of the three sides of an isosceles triangle are 24", 24", and 14". Find the measure of each length of each angle. Then find the area of the triangle.

70. Geometry

Once drawing the pentagon with a radius of 2, how would you figure out the side length when only knowing that the radius is 2 and when the apothem is placed it splits into a 36-60-90 triangle?

71. Geometry

Two buildings are separated by an alley. From a window 80 feet above the ground in one of the buildings, it can be observed that the angle of elevation to the top of the other building is 62*, and the angle of depression the the bottom of the building is

72. Physics

If someone pushes on a box on a horizontal floor with a horizontal force of 17.8 N, but the box does not move, what is the static friction (Fs) between the box and the floor? Explain. The next question is: If the box just starts to move with a horizontal

73. Physics

If someone pushes on a box on a horizontal floor with a horizontal force of 17.8 N, but the box does not move, what is the static friction (Fs) between the box and the floor? Explain. The next question is: If the box just starts to move with a horizontal

74. Physics

A 75.0 kg object is on an incline of 30 degrees horizontally. I have to calculate several things from this, and I need help with some of them. I have to find the following: 1. Static coefficient of friction 2. Kinetic coefficient of friction 3.

Can someone give me an elaborate overview of what the Puritan period is about?

76. History

Why did the Elizabethan period end? I know that it ended with Queen Elizabeth I, but I need a more elaborate explanation of why that era ended?

77. Physics

A golf ball with an initial angle of 34 degrees lands exactly 240 m down the range on a level course. a.) Neglecting air friction, what initial speed would achieve this result? b.) Using the speed determined in item a, find the maximum height reached by

78. Math

If the ratio of green marbles to yellow marbles is 3:4 then how many yellow marbles are there for 8 green marbles

79. Physics

A train travels due east at a velocity of 85.5 km/hr. A passenger walks from the front of the train to the back at a velocity of 3.7 km/hr. What is the velocity of the passenger to an observer who is seated on a train going due west at a velocity of 64.7

80. Physics

A car heads due west on Interstate 80 going 63.0 km/hr for 2.1 hours. The car then turns and heads exactly northwest on Interstate 42 going 53 km/hr for 3.3 hours. What is the resultant displacement of the car? I've done some work on it and I have a good

81. Physics

A car heads due west on Interstate 80 going 63.0 km/hr for 2.1 hours. The car then turns and heads exactly northwest on Interstate 42 going 53 km/hr for 3.3 hours. What is the resultant displacement of the car?

82. Math

What is the difference between "Give your answer correct to two decimal places." and "Round your answers to two decimal places." ?? Are they the same thing or do the answers differ?

83. information and technology

c) Describe each of the computer specifications listed below i. Intel Core 2 Duo T6670 (2.2GHz,2MB L2 cache) ii. 15.6 HD Anti-Glare (1366x768) iii. 2 GB DDR3 1066 MHz 1DIMM iv. 320 GB 7200RPM v. DVD+/- RW vi. Loaded Operating system Windows 7 vii. Wireless

84. principle of management

whilst entrepreneurship is a panacea to the world over, the current Zimbabwean situation is different .eludicate four reasons why the situation is different

85. Math

Kate's parents decided it was time to start giving her pocket money. They were not sure how much to give her so they started with \$1 for the first week and doubled it every week. How many weeks until Kate gets over \$20 pocket money?

86. Economics

Assume the total cost of production in a particular firm is #50000.00 while the fixed cost is #30000.00. The wages paid to each unit of labour is #2000.00. Calculate the unit of labour employed in this firm please what is the formula

87. Chemistry

How do you determine the polarity of a substance? Example?

88. math

How many yards is 9000024km

89. fin/370

Spread the balance sheets and income statements of Lake of Egypt Marina, Inc., for 2015 and 2014. (LG3-6)

90. chem12

2HI(g)--H2(g) + I2(g) k eq= 8.0 2.0 mol of HI are placed in a 4.0L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases Initial 2HI=0.5 mol/L H2= 0 I2=0 change 2HI= -2x H2= x I2=x equilibrium

91. chem12

2HI(g)--H2(g) + I2(g) k eq= 8.0 2.0 mol of HI are placed in a 4.0L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases Initial 2HI=0.5 mol/L H2= 0 I2=0 change 2HI= -2x H2= x I2=x equilibrium

92. chem 12

1.0 mol of each of the gases, CO, H20, CO2 and H2 are placed in a 2.00L container and allowed to reach equilibrium. It is found at equilibrium 0.40 mol of CO is present. Calculate the value of K eq for the system. C0(g) + H20(g)--- CO2(g) + H2(g) Intial

93. chem 12

2H2S(g)---2H2(g) + S2 delta H=220KJ k eq is 0.40 a 10.0L vessel containing 2.0 mol of H2S, 2.2 mol of H2, and 2.5 mol of S2 Calculate a trail k eq value to see whether the reaction is at equilibrium. trail k eq =(h2)^2(S2)/(H2S)^2 = (0.22)^2(0.25)/(0.2)^2

94. chem 12

for the equilibrium 2HI(g)--- H2(g) + I2 k eq = 8.0 2.0 mol of HI are placed in a 4.0 L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases. Inital 2HI 0.5mol/l H2 =0 I2=0 change 2HI= -2x

95. chem 12

2H2S(g)---2H2(g) + S2 delta H=220KJ k eq is 0.40 a 10.0L vessel containing 2.0 mol of H2S, 2.2 mol of H2, and 2.5 mol of S2 Calculate a trail k eq value to see whether the reaction is at equilibrium. trail k eq =(h2)^2(S2)/(H2S)^2 = (0.22)^2(0.25)/(0.2)^2

96. chem12

1.0 mol of each of the gases, CO, H20, CO2 and H2 are placed in a 2.00L container and allowed to reach equilibrium. It is found at equilibrium 0.40 mol of CO is present. Calculate the value of K eq for the system. C0(g) + H20(g)--- CO2(g) + H2(g) Intial

97. chem12

for the equilibrium 2HI(g)--- H2(g) + I2 k eq = 8.0 2.0 mol of HI are placed in a 4.0 L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases. Inital 2HI 0.5mol/l H2 =0 I2=0 change 2HI= -2x

98. Math

A credit card company charges 1.5% interest per month (that is 18% per year). On a balance of \$1448.00, calculate this month's finance charge