# donald

Most popular questions and responses by donald
1. ## Math

Which of the following is equivalent to the expression 6m + 3? A)2(3m + 3) B)3(2m + 1) C)3(2m + 3) D)6(m + 3) The answer I got was B) 3(2m + 1). How I got this answer was 3 x 2 + 3 x 1 = 6m + 3.

2. ## Math Geometry

Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting this is for elementary school so make it simple

3. ## Physics

The speed of a bobsled is increasing because it has an acceleration of 2.4 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The mass of the bobsled and its riders is 235 kg. (a)

4. ## life orantation

Make six suggestions on how to combat the violations of human rights identified by you in the previous questions and indicate any organisations you have come about in your research and indicate how they combat the discriminations.

5. ## physics

One of the new events in the 2002 Winter Olympics was the sport of skeleton (see photo). Starting at the top of a steep, icy track, a rider jumps onto a sled (known as a skeleton) and proceeds-belly down and head first-to slide down the track. The track

6. ## Math

Ricardo has a \$50.00 gift card for an electronics Store. He also has a coupon good for \$10 off his Purchase. Let a represent the amount of merchandise Ricardo can buy from the store using his gift card and coupon. Graph the solution set for a on the number

7. ## Life sciences

Why are the fossils kept in a glass box in the museum?

8. ## Physics 1

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the

9. ## physics

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.4 m/s. If nonconservative forces, such as kinetic friction and air resistance, are negligible, what would be the height h of the highest point reached by the

10. ## Physics

A bowling ball (mass = 7.2 kg, radius = 0.14 m) and a billiard ball (mass = 0.40 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?

11. ## algebra

if 3x years from today, Megan will be (3y + 4) times her present age, what is Megan's present age in terms of x and y?

12. ## Algebra

How do I find the unknown digit to make this statement true 2.48 > 2.4 ____1 > 2.463

13. ## Lang Arts

The novel to kill a mockingbird feature a main character named scout. Scout is also the voice that tells the story. What point of view is used in the novel? A.First Person B.Third-Person Limited

14. ## Math

Good evening everyone. I am very confused on how to work on the below problem. Ingrid walked her dog and washed her car. The time she spent walking her dog was 1/4 the time it took to wash her car. It took Ingrid 14 minutes to walk the dog. How long did it

15. ## chemistry

How many unpaired electrons for cr3+

16. ## science

An analysis for copper was performed on two pure solids. One solid was found to contain 43.0% copper; the other contained 32.0% copper. Could these solids be samples of the same copper-containing compound?

17. ## physics

A bullet of mass 0.045kg is fired from a gun of mass 9kg, the bullet moving with an initial velocity of 200m/s. Find the initial backward velocity of the gun.

18. ## Physics

A cube of ice is taken from the freezer at -8.5 degrees celsius and placed in a 100 gram aluminum calorimeter filled with 300 grams of water at room temperature of 20 degrees celsius. the final situation is observed to be all water at 17 degrees celsius.

19. ## Math - Probability

in a primary school 70% of the boys and 55% of the girls can ride a bicycle. if a boy or a girl are chosen at random, what is the probability that both of them can ride a bicycle?

20. ## Physics

The drawing shows six point charges arranged in a rectangle. The value of q is 9.27 µC, and the distance d is 0.17 m. Find the total electric potential at location P, which is at the center of the rectangle.

21. ## Physics

Suppose the surface (radius = r) of the space station in the figure is rotating at 38.6 m/s. What must be the value of r for the astronauts to weigh one-half of their earth-weight?

22. ## Physics

Consider the static equilibrium diagram below. What is the net force acting along the positive x-axis?

23. ## Physics

A 0.069-kg arrow is fired horizontally. The bowstring exerts an average force of 65 N on the arrow over a distance of 0.95 m. With what speed does the arrow leave the bow?

24. ## Language Arts

Good evening. I have a problem in English Language Arts. I have to write a poem. The instructions are as follows: Write a short poem that reflects the mood you interpret of a season (Spring, Summer, Fall or Winter). Follow the requirements listed below: 1.

25. ## Math2

A "quick picture" is an estimate than? 5 x 2.7 ..... 5 x 3= 15 Its been a long time since elementary school and I do not remember "quick picture" The question was How can you use a "quick picture" to find 5 x 2.7? the answer is 13.5.......an estimate would

26. ## Math

How do you use a "quick picture" to find 5 x 2.7.

27. ## Physics

A 7410-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

28. ## Physics

In the figure below, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at the same value. Suppose

29. ## Physics

Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must

30. ## Physics

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 914 N and the drag force has a magnitude of 1120 N.

31. ## physics

a man swings his child in a circle of radius .75 meters. if the mass of the child is 25 kilograms and the child makes one revolution in 1.5 seconds, what is the magnitude and direction of the force that must be exerted by the man on the child?

32. ## Math

A man walk 9km in the direction 246 degrees and then for 6km in the direction 096 degrees.... What is the answer in diagram Form?

33. ## Math

Write each percent as a fraction and as a decimal. 7. 72% full 72/100 or .72 9. 500% increase Would it be 500/100 or 500/1000? .500 11. 37% profit 37/100 and .37 Please be so kind as to double check my answers and explain to me if I got anything wrong so I

34. ## Physics

A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 2.10 105 N. In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 4.30 107 J

35. ## Physics

A cable lifts a 1060-kg elevator at a constant velocity for a distance of 39 m. What is the work done by each of the following?

36. ## Physics

(a) Calculate the magnitude of the gravitational force exerted on a 488-kg satellite that is a distance of 1.95 times earth radii from the center of the earth. (b) What is the magnitude of the gravitational force exerted on the earth by the satellite? (c)

37. ## Physics

A car drives straight off the edge of a cliff that is 60 m high. The police at the scene of the accident observed that the point of impact is 126 m from the base of the cliff. How fast was the car traveling when it went over the cliff?

38. ## Math

Write the ratio as a fraction in lowest terms. 1 1/7 to 3 1/4

39. ## Math

A man walk 9km in the direction 246 degrees and then for 6km in the direction 096 degrees...... What is the displacement from the starting point?..... Formula and answer please?

40. ## Math

Good evening. I posted a math question earlier that I never received any help on because someone posted something inappropriate. My new math problem is as follows: The area of a rectangular piece of a land is 3/16 square miles. If the width of the piece of

41. ## Math Geometry

Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting

42. ## math

in a primary school 70% of the boys and 55% of the girls can ride a bicycle. if a boy or a girl are chosen at random, what is the probability that both of them can ride a bicycle?

43. ## physics

A space traveler weighs 635 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?

44. ## chemistry

Calculate the grams of K2CO3 required to prepare 546.0 mL of a 0.789 g/L K+ solution.

45. ## Physics

When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and, thus, slows him down. Suppose the weight of the sky diver is 914 N and the drag force has a magnitude of 1120 N.

46. ## physics

In attempting to pass the puck to a teammate, a hockey player gives it an initial speed of 1.1 m/s. However, this speed is inadequate to compensate for the kinetic friction between the puck and the ice. As a result, the puck travels only one-half the

47. ## Math

An aircraft has airspeed of 300km/h and it's course is 020°. The speed of the wind is 80km/h blowing from 320°..sketch the diagram to represent this information (ie: the triangle of velocities).

48. ## Science

In what levels are producers and tertiary consumers, respectively found in an energy pyramid? I am kind of lost on how I am supposed to determine what level a producer is at on a pyramid? Can you please help me with this.

49. ## Math

Combine like terms. 32y plus 5y= I don't know what to do. I don't understand this. Please help.

50. ## math

Use the distributive property to write an expression that is equivalent to the example below: 5(2x + 7) I think my answer is... 45.....How I got this answer was 5 x 2 + 5 x 7=45 10 + 35 = 45 Can you please double check my work?

51. ## Finance

You borrow \$150,000 to purchase a new house. The bank offers you a special 20 year loan with a 7% interest rate and you will make annual payments. How large will each payment be? If you want to sell your house after 7 years, how much will you owe and need

52. ## Maths - Probability q2

Five cards are lettered A, B, C, D, E Three cards are chosen at random one after the other without replacement and are in the order shown below First, Second, Third What is the probability that the cards spell the word BED

53. ## Physics 1

The drawing shows a wire tooth brace used by orthodontists. The topmost tooth is protruding slightly, and the tension in the wire exerts two forces and ' on this tooth in order to bring it back into alignment. If the forces have the same magnitude of 15.0

54. ## physics

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 3.10 m. Two of the spheres have a mass of 3.20 kg each. The third sphere (mass unknown) is released from rest. Considering only the

55. ## Physics

The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's

56. ## analytical chemistry

Calculate the volume (mL) of 2.81 M magnesium phosphate solution require to prepare 43.20 mL of 2.1000 %w/v solution of Mg3(PO4)2 . [Answer in 3 decimal places].

57. ## chemistry

Calculate the maximum number of unpaired electrons that can be placed in a 6d subshell

58. ## Math

how many hours will it take Wendy to make 4 2/3 batches of cookies if she can make 1 1/3 batches in 1 hour

59. ## Peter nchabeleng

If you live 3,5 km away from school. How long will it take you to walk to school

60. ## Physics

Each of the space shuttle's main engines is fed liquid hydrogen by a high-pressure pump. Turbine blades inside the pump rotate at 595 rev/s. A point on one of the blades traces out a circle with a radius of 0.02 m as the blade rotates. (a) What is the

61. ## physics

The blade of a windshield wiper moves through an angle of 90.0° in 0.31 s. The tip of the blade moves on the arc of a circle that has a radius of 0.59 m. What is the magnitude of the centripetal acceleration of the tip of the blade?

62. ## Physics 1

6. –/1.5 points CJ8 4.P.014. My Notes | . Question Part Points Submissions Used 1 2 –/1 –/0.5 0/7 0/1 Total –/1.5 When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky

63. ## algebra2

select one factor of x^2 +16x+63

64. ## Science

Which level of consumer is an owl in the following chain: grass, cricket, mouse, and owl? I do not know understand this at all can you please explain this so I can get a better understanding of this?

65. ## Science

For many years it was believed by geologists that the location of the continents was fixed.These scientists believed that the locations of the continents was determined many billions of years ago,as the young Earth cooled down from its original state as a

66. ## Chemistry

please balance this chemical equation iron +oxygen > iron (III) oxide +energy Fe + O2> Fe2 O3 + heat and light

67. ## physics

Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 328 kg. The balloon is motionless in the air, because the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' force. If

68. ## Physics

During a circus performance, a 64-kg human cannonball is shot out of an 17-m-long cannon. If the human cannonball spends 0.99 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.

69. ## chemisrty

what is the balanced equation for thereaction of aluminum selenide with water including the physical states reactants and products im given hydrogen selenide prepared by reacting aluminum selenide with water other product solid aluminum hydroxide please

70. ## physics

estimate number of impacts number of imapcts air molecule make with palm of your hand assuming all air is nitrogen molar mass =.0028

71. ## Math A Calculus

For a =( 2 ÷3)and b=(-1÷4)..Find a).. a+b b).. | a+b | c).. Find the length of the vector i + 2j-- 2k

72. ## Math

Mrs. Sue, I have a math question if you can please help me on this. I am confused. I am doing coordinates. If I have a theater at 5 and a Restaurant at -4 (5,-4) how do I find out the halfway point in between?

73. ## math

write equation of hyperbola with cebter c(4,2) vertex (4,5) equation of one asymptote 4y-3x=-4

74. ## chemistry

Calculate the energies of the states of hydrogen atom with n=2 and n=3

75. ## chemistry

Calculate the energy required for ionization of electron from the ground state of hydrogen atom

76. ## chemistry

Calculate the energy required for ionization of electron from the ground state of hydrogen atom

77. ## Math

How do you write at least 6 fractions from the below ingredients list that serves 4 people. 1 cup all-purpose flour 2 eggs 1/2 cup milk 1/2 cup water 1/4 teaspoon salt 2 tablespoons butter , melted How do I make these fractions? PLEASE PLEASE PLEASE PLEASE

78. ## Science

The above is an article which I had to read for homework and one of the questions that I have to answer is as follows: Which bucket(s) could be supported with evidence from this Document? I do not understand this at all. Please help me.

79. ## Math

When looking at the problem given in the Video Example 84 –Factoring Out the Opposite of the GCF, located in the media section of Chapter 5, what GCF is first factored out of all terms in the expression

80. ## Finance

Mark has won a contest in which he will receive \$10,000 at the end of each of the next 10 years and then \$20,000 a year for the next 30 years after that. With an 8% discount rate, what is the present value of Mark's prize?

81. ## Math

If I swam 30 meters in 16 seconds how would I express this in a fraction? 16/30 or 30/16 and why?

82. ## physics

In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential

83. ## ecoomics

If the multiplier is 4, a \$10 billion increase in autonomous investment will cause a

84. ## Physics 1

The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 55600 N. The lift force generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

85. ## Physics

An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.16 105 m/s to a final velocity of +2.23 106 m/s while traveling a distance of

86. ## physics

A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?

87. ## Physics

A 1720-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 47.0 m?

88. ## Physics

In reahcing her destination, a backpacker walks with an average velocity of 1.29 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.59 m/s, due west, turns around, and hikes with an average velocity of

89. ## Statistics

1.What is the p value (“significance level”)? What does this p value mean? 2.How does the n (sample size) of this sample affect the r and p values? 3.Is there a relationship between assertiveness and whether one holds anger “in”? Descriptive

90. ## Prin Finance

Your company pays a dividend of \$2.35 per share and expects no growth in this dividend at all, it will remain at this level indefinitely in management’s opinion. Theoretically what will this stock’s price be today if investors require an 8% rate of

91. ## Prin of finance

Which of the following statements are true of a “two-for-one stock split?”: 1. It may signal higher future earnings 2. By creating more shares at a lower price, marketability may be improved 3. It increases the “Equity Section” of a company’s

92. ## Chem

the equation is, 2KCL0subscipt3--->2KCL+3Osubscript2 if 5.0 g of KCLOsubscript3 is decomposed, what volume of 0subcript2 is produced at STP?

93. ## chemistry

Explain the first ionization energy of lithium is greater than that of sodium

94. ## science

If a scientist wished to to determine the effect of a certain herbicide on wee growth he would include a control in the investigation. Suggest a suitable control in this case.

95. ## science

Describe how you would investigate effect of ph on enzymes rate. Draw a labelled diagram to show how you carried out the experiment

96. ## science

What is the unit for measuring enzyme activity? What is turnover number

97. ## math

A circle has centre(5,12) and its tangent to the line with equation 2x-y+3=0. Wtite equation of the cirle

98. ## math

The locus of point whose distance from the point (0,5) is always 3/4 of its distance from line y=8 is an ellipse. Find major and minor axis

99. ## Math

Hello I need to ask a question. This is all new to me as we are just learning this in school. How would I write an inequality with -197 and -110? I have never done this before. Can you please help me?