# Questions Asked onMarch 15, 2014

1. ## Science

Studies indicate that fertilizers from nearby farm fields have entered a lake. Which of the following describes a likely change in this ecosystem in the future? A.Algae populations will increase and trout populations will decrease.* B.Algae populations

2. ## Science

Kudzu is a climbing vine native to Japan and China. It was introduced in the U.S. in the late 1800s. Today, this plant is common along roadsides in the Southeast, where it takes over and destroys native vegetation. Kudzu would be classified as a(n)

3. ## Algebra Question~!

The area of a rectangular room is given by the trinomial x^2+7x-30. What are the possible dimensions of the rectangle? Use factoring. (1 point)

4. ## geometry

A Japanese fan can be made by sliding open its 7 small sections (or leaves), which are each in the form of sectors of a circle having central angle of 15. If the radius of this fan is 24 cm, find out the length of the lace that is required to cover its

5. ## Science

Cave ecosystems are characterized by extremely low light levels. What role does photosynthesis play in a cave ecosystem? 1: Photosynthesis is essential because it provides the original energy source for all food chains in this ecosystem. 2: photosynthesis

6. ## Science

Which of the following is true of carbon? Carbon is present in all organisms and in the atmosphere.* Carbon moves from consumers to producers. Carbon must be fixed by bacteria before other organisms can use it. Carbon can only be released from dead

7. ## math

A 10 foot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on level ground 8 feet from the base of the building. How high up the wall does the ladder reach.

8. ## Math

An architect has allocated a rectangular space of 264ft^2 for a square dining room and a 10ft wide kitchen. What is both the width of the square dining room and the length of entire space.

9. ## Science- Last question

Which of the following is true of carbon? Carbon is present in all organisms and in the atmosphere.* Carbon moves from consumers to producers. Carbon must be fixed by bacteria before other organisms can use it. Carbon can only be released from dead

10. ## Physics

The Achilles tendon is attached to the rear of the foot. Assume that a person has a mass of 53 kg and that D is twice as long as d. When a person elevates himself just barely off the floor on the "ball of one foot," estimate the tension in the Achilles

11. ## Science

Which organisms are capable of converting gaseous nitrogen in the air into a form that other living organisms can use? nitrogen-fixing bacteria denitrifying bacteria decomposers producers Would the correct answer be A?

12. ## algebra

Your research the average cost of whole milk for several years to look for trends the table shows your data what is the equation for a line of best fit how much would you expect to pay for a gallon of milk in the year 2023 Year, 1998, 2000, 2002, 2004,

13. ## Introduction to Computers

what type of memory or storage device is prone to losing data if the power goes out? A. A USB stick B. An External Drive C. A DDR SDRAM module D. A SATA drive

14. ## Algebra

A box has a volume given by the trinomial x^3+5x^2-24x. What are the possible dimensions of the box? Use factoring. (1 point)

15. ## Science

How does matter move through the biosphere?

16. ## Algebra Question~!

A sphere has a radius of 3x+2. Which polynomial in standard form best describes the total surface area of the sphere?

17. ## Physics

Shawn and his bike have a total mass of 58.5 kg. Shawn rides his bike 0.54 km in 17.2 min at a constant velocity. The acceleration of gravity is 9.8 m/s^2. What is Shawn’s kinetic energy? Answer in units of J.

18. ## math

Find the lateral area of a cone with a radius of 7 ft. and a slant height of 13 ft. Use 3.14 for π and round to the nearest whole number. 439 ft2 324 ft2 572 ft2 286 ft2*** Find the volume of a square pyramid with a base length of 9 cm and a height of 4

19. ## Science

Roseate spoonbills are wading birds that live in the Everglades of Florida. These birds eat a diet of shrimp, fish, amphibians, and aquatic plants. Which of the following sets of words could be used to classify this species? autotroph, omnivore, predator

20. ## physics

1) a bullet of mass 0.02 kg is fired into a block of wood of mass 1.5 kg resting on a horizontal table. The block moves offwith an initial speed of 8 m/s. Estimate the speed with the bullet strikes the block. 2) The bullet in question 1 is fired from a

21. ## Pre-Calculus

Express the complex number in polar form. 5-12i

22. ## Algebra Question~!

A biologist studied the populations of common guppies and Endler’s guppies over a 6-year period. The biologist modeled the populations, in tens of thousands, with the following polynomials where x is time, in years. common guppies: 3.1x^2 + 6x + 0.3

23. ## math

The distance versus time plot for a particular object shows a quadratic relationship. Which column of distance data is possible for this situation?

24. ## stat

A physician routinely makes physical examinations of children. She is concerned that a three-year-old girl has a height of only 87.8 cm. Heights of three-year-old girls have a mean of 97.5 cm and a standard deviation of 6.9 cm (based on data from the

25. ## Algebra Question~!

A community group is building a playground on a rectangular lot of land. The lot measures 6x by 9x and they want to cut out an area for a circular jungle gym with a radius of 4x. How much of the land will be left over after the jungle gym is built? (1

26. ## Physics

Suppose the hand in holds a 20 kg mass . What force, FM, is required of the deltoid muscle? Assume the mass is 50 cm from the shoulder joint, the force of tension in the deltoid is directed 15° to the horizontal, and the mass of the arm alone is 3.8 kg.

27. ## Chemistry

Calculate the amount of energy released per gram of nuclei when 2 protium nuclei react to form deuterium nucleus (protium = 1.00782 amu, deuterium = 2.01410 amu). The answer in the book is -2.0 x 10^10 J, but I don't have any idea on how to do this. Please

28. ## math

If a store owner buys a microwave for \$200 and sells it for \$275. What is the percent markup based on cost?

29. ## Physics

A car of mass 1900kgs accelerates from rest to a speed of 27ms-1 in 8.1s.Calculate the average rate at which kinetic energy is supplied to the car during the acceleration.

30. ## chemistry

Assuming that the volumes of carbon diox- ide and of propane are measured under the same experimental conditions, what volume of carbon dioxide is produced by the complete combustion of 20 L of propane? i just don't understand

31. ## English

"You should just go somewhere. You ruined our relationship, and I don't want to talk to you anymore," Bertha said to Mitchell as he begged her for forgiveness, "But, Bertha, you are the best girl in the world. You make my dreams come true." Bertha ignored

32. ## Calc

Find the point on the line –2x+2y–3=0 which is closest to the point (–4–4). Please provide solution. ( , ) Thanks guys!

33. ## American History

__ and ___ first attracted settlers to the West. I know cheap land and gold were factors but I don't know what were the first things were

34. ## cal

Finding Partial Derivatives Implicitly. Find dz/dx and dz/dy for 3x^(2)z-x^(2)y^(2)+2z^(3)+3yz-5=0 How would you type this in wolfram alpha calcultor to get the answer? Thanks,

35. ## math

Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3 Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15 cm. 472 cm2 451 cm2 781 cm2 330 cm2 Find the volume of

36. ## I really need help

Find the volume of a cone with a radius of 10 mm and a height of 6 mm. 628 mm3 600 mm3 1,884 mm3 1,254 mm3 Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15 cm. 472 cm2 451 cm2 781 cm2 330 cm2 Find the volume of

37. ## statistics

Canadians are becoming more conscious of the importance of good nutrition, and some researchers believe that we may be altering our diets to include less red meat and more fruits and vegetables. To test this theory, a researcher decides to select hospital

38. ## Physics

The acceleration of a particle moving only on a horizontal xy plane is given by a=5ti+6tj, where a is in meters per second-squared and t is in seconds. At t=0, the position vector r=(19.0m)i+(39.0m)j locates the particle, which then has the velocity vector

39. ## English

"I don't want to put my shoes on," cried Timmy. Timmy had been fussy ever since snack time. He didn't get a cheese stick because Michael ate the last one. Then he didn't get to sleep at all during nap time. Now he was really worked up. "I want to go home.

40. ## Probability

I know I posted this already but no one answered the questions!!!!! **************ANSWER THIS PLEASE!!!! Two students are chosen at random from all 50 students. Find the probability that a) Both students walked b) only one of the students walked 50

41. ## geometry

T or F two coplanar circles with two points of intersection will have four common tangents?

42. ## Physics

A uniform ladder of mass m = 6.5 kg and length l = 2.1 m leans at an angle against a frictionless wall, Fig. 12-72. If the coefficient of static friction between the ladder and the ground is µs = 0.3, what is the minimum angle at which the ladder will not

43. ## English

Timmy Turner was rushing to get to school because he was going on a field trip. Timmy felt so happy and excited that he was going on his first field trip of the year. Timmy thought that everything was going to go good that day. a)first person b) second

44. ## English

Jessie had felt sad all day. Jessie thought and thought about his situation and he thought to himself, I need to get myself together. Maria came in the door and asked what was wrong. He told her. Maria frowned. She felt as if she were being abandoned by

45. ## Chemistry (titrations)

15.00 mL of 0.01200 M EDTA were used to titrate 50 mL aliquot solution containing iron (II). How much iron (II) is present in the solution? The answer in the book is 201 ppm. I tried getting the moles of EDTA (n,EDTA = 1.8 x 10^-4 mol). I think they're in

46. ## math

Two numbers are such that their difference, their sum, and their product are in the ratio 1 : 4 : 15. What are the two numbers?

47. ## math (cant figure it out)

How to find the surface area of a cylinder with a diameter of 6ft and a height of 20cm using 3.14 rounded to the nearest whole number. (I cant figure it out my book doesn't give an example of it just a radius formula and ive tried searching the formula but

48. ## chemistry

Calculate the pH for the hydrogen half-cell of the following voltaic cell if the observed cell voltage is 1.00 V. Mn|Mn2+(1.00 M)||H+(pH =?), H2(1.00 atm)|Pt

49. ## Finance

Simon wishes to have \$400,000 in a retirement fund 20 years from now. He can create the retirement fund by making a single lump sum deposit today. How much would Simon need to have on deposit at retirement in order to withdraw \$35,000 annually over the 15

50. ## Physics

A toy gun uses a spring to project a 6.1 g soft rubber sphere horizontally. The spring constant is 12.0 N/m, the barrel of the gun is 12.6 cm long, and a constant frictional force of 0.031 N exists between barrel and projectile. With what speed does the

51. ## Astronomy

Light travels at a constant speed of 3.0 x 105km/s. The distance between the Sun and the Earth is about 1.5 x 108km. Use the distance = speed x time formula (d = v t) to calculate the time it takes light to travel from the Sun to the Earth. Show your work.

52. ## physics

A ball of mass 0.1 kg is dropped from a height of 2 m onto a hard surface. If rebounds to a height of 1.5 m and it is in contact with the surface for 0.05s. Calculate the: (a) speed with which it strikes the surface. (b) speed with which it leaves the

53. ## i need yur help with this..

Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15 cm. 472 cm2 451 cm2*** 781 cm2 330 cm2 Find the volume of a rectangular prism with the following dimensions: Length = 5 mm Base = 7 mm Height = 3 mm 142 mm3 ***

54. ## Physics

A team of dogs drags a 151 kg sled 0.863 km over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.223.The acceleration of gravity is 9.8 m/s^2. 1. Find the work done by the dogs. Answer in units of

55. ## Math help plz check my answers!

Find the surface area of a square pyramid with a base length of 11 cm and a slant height of 15 cm. 472 cm2 451 cm2*** 781 cm2 330 cm2 Find the volume of a rectangular prism with the following dimensions: Length = 5 mm Base = 7 mm Height = 3 mm 142 mm3 ***

56. ## chemistry

The distance versus time plot for a particular object shows a quadratic relationship. Which column of distance data is possible for this situation?

which statement about the Sarbanes-Oxley act is true

58. ## Physics

A block of mass 2.48 kg is kept at rest as it compresses a horizontal massless spring (k= 113 N/m) by 4.65 cm. As the block is released, it travels 0.462 m on a rough horizontal surface before stopping. The acceleration of gravity is 9.8 m/s^2. Calculate

59. ## physics

A 12.0 g bullet is fired into a 13.9kg wooden block that is hanging straight down, suspended by a 2.00 m length of light line. The bullet has a muzzle velocity of 94.2 m/s. When the bullet hits the block, the bullet stays in the block. The block swings

60. ## Physics

A cart loaded with bricks has a total mass of 22.3 kg and is pulled at constant speed by a rope. The rope is inclined at 27.3◦ degrees above the horizontal and the cart moves 9.3 m on a horizontal surface. The coefficient of kinetic friction between

61. ## English

Emma thought and she thought: How can I make people notice me? Then, Emma's two twin nieces ran in the kitchen and asked Emma to make a batch of cookies for their class. She did, and the next day at the bake sale, lots of children and parents were buying

62. ## Linear Algebra

Use Gauss Jordan Elimination to write the solution of the system of equations: x1+4x2+2x3=17 3x1+x2-5x3=7 2x1-3x2-7x3=-10

63. ## Pre Calculus

Find each product or quotient. Express the result in rectangular form. 2(cosπ/6+isinπ/6) X 4(cos2π/3 +i2π/3)

64. ## English

When I went to the store, I witnessed a girl crying on the street and I took a closer look and saw it was my friend. I walked to where she was and asked her what was wrong. She said, "Family problems." Being a good friend, I told her to call me later if

65. ## science

1 A ……... is a rectangular array of numbers that are enclosed within a bracket . horizontal set vertical matrix 2 When the numbers of rows is equal to the numbers of columns equal to 'n'. Where m=n. Then is called….. a square matrix a column

66. ## physics

A 3 kg mass attached to a string 6 m long is to be swung in a circular at a constant speed making one complete revolution in 1.25 s. Determine the value that the breaking strain that the string must not exceed if the string is not to break when the

67. ## Astronomy

Light travels at a constant speed of 3.0 x 105km/s. The distance between the Sun and the Earth is about 1.5 x 108km. Use the distance = speed x time formula (d = v t) to calculate the time it takes light to travel from the Sun to the Earth. Show your work.

68. ## English

"You should just go somewhere. You ruined our relationship, and I don't want to talk to you anymore," Bertha said to Mitchell as he begged her for forgiveness, "But, Bertha, you are the best girl in the world. You make my dreams come true." Bertha ignored

69. ## math

Center C has a radius of 13.Chord AB=10. Find the distance from the center of the circle to chord AB. CD=?

70. ## English

First, Second or Third person "Do you love candy?" I asked my friend Roxis. I always make friends with other people. a)first person b) second-person c) third-person I think A

71. ## Pre-Calculus

Express the number in rectangular form. 3(cosπ/3+isinπ/3)

72. ## physics

(a) Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.60 m/s2. What angle does the ramp make with respect to the horizontal?

73. ## Algebra

1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise

74. ## geometry

center C has a radius of 13.Chord AB=10.find the distance from the center of the circle to chord AB. CD=?

75. ## Englsih

To Make French Toast: First, take out skillet to cook and turn the stove on low. Second, you will melt the butter in the pan and stir it with a spatula. Third, beat the eggs. Fourth, lay the bread, white or wheat, on both sides in the eggs. Fifth, sit the

76. ## physics

1)when a person stands on bathroom scales the scale reads 60 kg. Suppose the person stands on the same scales when in an elevator (lift). the elevator accelerates upwards at 2m/s2. Determine the new reading on the scale. 2)When a golfer strikes a golf ball

77. ## Physics

A racing car has a mass of 1530 kg. The acceleration of gravity is 9.8 m/s^2. What is its kinetic energy if it has a speed of 136 km/h? Answer in units of J.

78. ## Physics

1. A 3 kg block collides with a massless spring of spring constant 90 N/m attached to a wall. The speed of the block was observed to be 1.5 m/s at the moment of collision. The acceleration of gravity is 9.8 m/s^2. How far does the spring compress if the

79. ## English

Some dark night Shelly said, "I hate squirrels," but really she loved them. Carol said, "They smell," but really, she loved them too. Both of them thought that squirrels were pretty cute. A) first person B) second person C) third person I think C

80. ## chemistry

3. a) Calculate the pH of the buffer solution prepared by mixing 40.0 mL of 0.100 M H3PO4 and 60.0 mL of 0.100 M KH2PO4. Given the pKa of H3PO4 is 2.12.

Imagine you are an executive for BP, and you are preparing a presentation for the board of directors about the organization’s direction. Create a 10- to 15-slide Microsoft® PowerPoint® presentation, with speaker notes, in which you address

82. ## English

We are not as close as we once were, at least not since the thing happened. We were sitting in science class when I decided to look at her notebook. I noticed that she wasn't taking notes. I think this would be first person

83. ## Algebra One

If r = 9 units and h = 7 units, what is the volume of the cylinder?

84. ## Math

A rectangle has sides 170mm and 130mm.What is the angle between the diagonals?

85. ## physics

An object of weight 50 N is suspended vertically by two strings. The strings are of the same lenght and the angle between them is 60 degree. Draw a free body diagram of the forces acting on the object. Calculate the tension in the strings.

86. ## math

the number of tickets sold each day for an upcoming performance is given by N(x)=-0.5x^2+13x+15 where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day? Ticket sales

87. ## Social Studies 8

Which of the following was NOT a reason why there was less industrial development I the South than in the North? a. because of the rockiness of southern land made it difficult to develop railroads. b. because there was a lack of capital in the South. c.

88. ## accounting

The process of adjusting the bond interest expense account for any premium or discount is called amortization of the premium or discount

89. ## English

First, you will need to wash your hands and gather all of your materials. Once you've done that, follow all of the directions in your cookbook. Put your crispy treats in the oven and cook for 30-35. Once the treats are cooled, you and your friends can

90. ## accounting

Bonds issued giving the holder the option of exchanging the bonds for capital stock of the corporation are called

91. ## Pre-Calculus

Find this quotient. Express the result in rectangular form. 9(cos3π/2 + isin3π/2) ÷ 3(cosπ/4 + isinπ/4)

92. ## chemistry

Determine the volume of 1.2 mol/L HCl that will be required to neutralize 150 mL of 0.080 mol/L Ba(OH)2

93. ## MATH 104

Last semester, a certain professor gave 24 As out of 244 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives a grade.)

94. ## Education

I need to identify categories of learner characteristic that relate to diversity in the learning environment. describe the implications for learning associated with those characteristics? I have came up with : Prior Knowledge and Learning Styles. I have to

95. ## English

I am writing an essay on honor killing and i don't know what to put for my "call for action?" PLEASE HELP

96. ## Investment interest

Scenario: A client comes to you for investment advice on his \$500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best

97. ## can u explain? 1 question

What is the formula for volume of a pyramid?

98. ## math

John bought 3 of the same shirt and paid 63.00 after the 30% discount.What was the original price of one of the shirts ? Not sure at all how to do this. Thank you

99. ## English

1. I am good at making things. 2. I am good with making things. (Are both the same in meaning? Which preposition is commonly used?)

100. ## soc

2. Roman Catholic dogma is an example of moral thinking based on (Points : 1)

101. ## math

Suppose you try to solve a system of linear equations using substitution and get this result. 1. x=-2 2. y=12 3. 6=x 4. -8=-8 5. 7=y 8. 5=3

102. ## English

How to Properly Clean Your Disc: First, buy a CD buffer from your neighborhood Gamestop store. If you want to clean your CD for free instead, get a Q-tip or soft cloth. Use alcohol or window cleaner and wipe up and down applying light pressure as needed.

103. ## Physics

torque to move a block of m=200kg for 10m at an angle of 25 degree with a speed of 20m/s.

104. ## cal

Using a Lagrange Multiplier with One Constraint. Find the maximum value of f(x,y)=4xy, where x>0 and y>0, subject to the constraint (x^(2)/3^(2)+(y^(2)/4^(2)=1.

105. ## science

1 What is a set of real or complex numbers or elements arranged in rows or columns to form a rectangular array. set matrix determinant real numbers 2 If A.x= λx ,where A= ∣∣∣∣211232−212∣∣∣∣ ,determine the eigen values of the matrix A,

106. ## Physics

A 49.5-kg skater is traveling due east at a speed of 2.88 m/s. A 72.5-kg skater is moving due south at a speed of 6.82 m/s. They collide and hold on to each other after the collision, managing to move off at an angle south of east, with a speed of vf. (a)

107. ## accounting

Corporations are subject to specific corporate tax rates different from those for individuals. True False

108. ## tring

factor x2-x-6

Mr . X calls your office to see your employer, who has forgotten about the appointment and is now lunching at his club with an important overseas client. How would you deal with the situation?

110. ## World Geography

OPEC was formed in 1960 in order to

111. ## physical science

a particle moves from rest and accelerated at 5.00m/s2. how long does it take to travel m?

112. ## Algebra

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 2) of the 125 students in an

113. ## algebra

Can you show me how to figure out a scatter plot is about months and electricity bills can you show me a example Thanks

114. ## math

Three men, A, B and C agree to share the expense of a fishing expedition in the ratio 2:3:4. A pays \$25 for the hire of the boat, B pays \$70 for the meal and C pays \$49 for traveling expenses. How much must A and C pay B to settle their agreed shares?

115. ## Language Arts

Place commas where needed. 7) While I was researching skate boards, I found an interesting, old newspaper story. 8) In the June 29, 1999, edition of the Mercury, there was an article on skateboarding. 9) Some scientists in San Francisco, California, filmed

116. ## Math

1 Catriona is deciding how large of a cake to order for a party. She can choose from a 1-layer cake that serves 10 people, a 2-layer cake that serves 20 people, a 3-layer cake that serves 40 people, or a 4-layer cake that serves 65 people. The cost of the

117. ## math

Pete saved 24.00 of the 60 .oo dollars he earned. What percentage of his earnings did he save ?

118. ## Algebra II

Simplify 4-7i/2+5i

119. ## math

Solve: -7.2 – (-3.8)

120. ## math

which line is perpendicular to the line y=2/3x+3

121. ## mathematics

Given that 4^X=8X. Solve for X

122. ## Spanish help

1. ¿Se divirtieron Uds. En la fiesta de fin de año? Sí, pero comimos demasiado. La madre de Pablo nos ______ mucha comida. A. sirve B. saludó C. besó D. sirvió I said D 2. Carla, el tocacintas mío no funciona. ¿Puedo usar _____? ¡Claro que sí!

123. ## Civics

What are the qualifications of Florida state legislature?

124. ## Algebra

what is the expression that is equivalent to -2(x-3)

125. ## Science

How does adaptation explain the patterns of distribution of plant and animal species in the world? My answer is: If you were in the rain forest, the plants on the forest floor will die because there's tall trees blocking the sunlight. The trees adapt and