# Questions Asked onAugust 20, 2015

1. ## Algebra

negative numbers closed under subtraction. True or false My answer is false, is this correct

Which of the following are considered macromolecules? Select all that apply. (2 points) nitrogen lipids proteins*** carbon*** Which property allows water to stick to glass? (1 point) cohesion**** suspension adhesion solution How many valence electrons does

3. ## Calculus 1

Explain how the following graphs are obtained from the graph of y=f(x). (Select all that apply.) (d) y= -2f(x) shift 2 units upward shift 2 units downward shift 2 units to the right shift 2 units to the left stretch the graph vertically by a factor of 2

4. ## Geometry

Question: If a ray divides an angle into two supplementary angles, then the original angle is a straight angle. True?

5. ## Science

In a scientific experiment, facts, figures, and other evidence gathered through observations are called? A. Data(?) B. Manipulated Variables C. Responding Variables D. Laws

6. ## Physics

After this ﬁrst encounter, the bird then turns around and ﬂies from the runner back to the ﬁnish line, turns around again and ﬂies back to the runner. The bird repeats the back and forth trips until the runner reaches the ﬁnish line. How far does

7. ## Physics

The stoplights on a street are designed to keep traﬃc moving at 34 mi/h. The average length of a street block between traﬃc lights is about 80 m. What must be the time delay between green lights on successive blocks to keep the traﬃc moving

8. ## Calculus 1

Evaluate the difference quotient for the given function. Simplify your answer. f(x) = 1+2x− x^2, (f(4+h)-f(4))/h

9. ## Calculus 1

Explain how the following graphs are obtained from the graph of y=f(x). (Select all that apply.) (a) y=7f(x) shifts 7 units upward shifts 7 units downward shifts 7 units to the right shifts 7 units to the left stretch the graph vertically by a factor of 7

10. ## psychics

you throw a ball straight upward into the air with a velocity of 20.0 m/s, and you catch the ball some time later. a) how long is the ball in the air b)how high does the ball go c) what is the balls velocity when you catch it I don't get how you are

11. ## Math

A 40lb child sits at one end of a teeter-totter-totter which is 12 feet long and has the fulcrum in the center. How many feet from the fulcrum should a 60 lb child sit so the teeter-totter will balance?

12. ## Calculus 1

Find f o g o h. f(x) = x + 9, g(x) = 3x, h(x) = x − 5

13. ## Algebra

Evaluate the square root of 144 over 25.

14. ## database

ERD of _ A patient can make many appointments with one or more doctors in the clinic, and a doctor can accept appointments with many patients. However, each appointment is made with only one doctor and one patient. _ Emergency cases do not require an

15. ## Writing skills

More recently, however, doctors have taken a greater interest in the field. Along with the general public, too. The most effective combo of sentence 3 and 4 would include which of the following groups of words? 1. doctors, as well as the general public, 2.

16. ## Accounting

The Major Issue in inventory accounting is: A. determining whether to take inventory using cycle counts as opposed to counting all inventory only at the end of the year. B. deciding whether to maintain records on a periodic or perpetual basis. C.

17. ## 3

Use the digits 3,7,1 and 5 to write a number that rounds to each of the following 1700 3500 1600 7400

18. ## is my answer right? government

Which was an argument against ratification of the Constitution? (1 point) A Bill of Rights is not necessary. The Ohio Plan should be used. A strong national government will become oppressive. A strong national government is necessary for national security.

19. ## Science

I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and

20. ## Physics

Part one was answered, thank you. This was Part one:A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the ﬁnish line, a bird begins ﬂying from the runner to the ﬁnish line at 24.8 km/hr (4 times as fast as the runner). When

21. ## algebra2

write the slope-intercept form of the equation of the line through the given point with the given slope. through:(-1,-2), slope=6

22. ## Economics

Are there any welfare or subsidy payments that should be reviewed or added

23. ## maths

Aslam's weekly salary increased fromfrom Rs 175 to Rs 201.25. Find the percent of increase

24. ## Physics

A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the finish line, a bird begins flying from the runner to the finish line at 24.8 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and

25. ## jeff elem

How do I find out what each mark represent on a number line?

26. ## Statistics

Two Boats the Picadilly and the Orange are competing for a spot in the Cup races. They race over a part of the course SEVERAL TIMES. The sample times in minutes for the Picadilly are 12.9, 12.5, 11.0, 13.3, 11.2, 11.4, 11.6, 12.3, 14.2, and 11.3. The

27. ## Calculus - HELP URGENT PLEASE

Consider a lake of constant volume 12200 km^3, which at time t contains an amount y(t) tons of pollutant evenly distributed throughout the lake with a concentration y(t)/12200 tons/km^3. assume that fresh water enters the lake at a rate of 67.1 km^3/yr,

28. ## Math

7 digit number no repetition of numbers digit 5 in thousands place, greatest digit in the millions place, digit in the hundred thousands place is twice the digit in the hundreds place, digit in the hundreds place is twice the digit in the ones place, digit

29. ## L.O.

Assess the extent to which bad road use has a direct impact on the physical, emotional, social and economic aspects to the family, the community and country.(20)

30. ## Makalema secondary school

Aluminium reacts with oxygen to form aluminium oxide.How many grams of potassium chlorate would be heated to produce enough oxygen to form 5.1 grams of aluminium oxide?

31. ## Basic Dressmaking Processes

1. In order to produce a professional-looking garment, pressing should be done A. at each process. B. only when the garment is complete. C. just on the right side of the fabric. D. quickly and with a light touch. 2. A wooden clapper is used to A. hold an

32. ## AIIMS

A body is projected with 10m/s at the angle of60degree . find its velosity when attraction of motion of the 45degree

33. ## Math

How do you form an equivalent division problem for 8 1/2 divided by 1/2 by doubling both the dividend and divisor

34. ## Algebra

Square root of 1/9

35. ## Math

(x-1) (x-8) x sqrt +8

36. ## algebra

write the slope-intercept form of the equation of the line through the given points. through:(2,3)and(o,5)

37. ## maths

if 8 8 8 x-1 x 3 8= 2 find the value of x (x-1 and x 3 power)

38. ## CHEMISTRY URGENT HELP

carbon dioxide is moderately soluble in cold water but is completely boiled out if the water is boiled.Solubility increases rapidly with pressure. How is the above phenomenon used in the production of aerated drinks?

39. ## Algebra

a plane travelling 600 miles per hour is 30 miles from an airport at 4:58pm. At what time will it arrive at the airport

40. ## Art

1. In the image, Green Wheat Fields, Auvers by Vincent van Gogh, which of the following elements was not used to create the principle of harmony? A. Colors B. Form C. Line D. Texture 3. In the image, The Annunciation, by Jan van Eyck, which element in this

41. ## supply chain

If Six Sigma were terminated in an operation, would anything happen to the quality of the products produced? Why or why not?

42. ## Economics

Suppose that 20 workers were required in 2010 to produce 120,000 bushels of wheat on a 1,000-acre farm. a. What is the average output per acre? (?) bushels per acre What is the average output per worker? (?) bushels per worker b. If in 2020 only 16 workers

43. ## Physics

The stoplights on a street are designed to keep traffic moving at 34 mi/h. The average length of a street block between traffic lights is about 80 m. What must be the time delay between green lights on successive blocks to keep the traffic moving

The volume of a fixed mass of a gas in a cylinder at constant temperature is 300cm,when the pressure is 900mmHg.calculate the new volume when the pressure is 600mmHg.

45. ## Algebra

Rationalize numerator. ((sqrt7)-3/4)(sqrt7+3/sqrt7+3) I got that the answer is 7-9/4sqrt7+12= -2/4sqrt7+12

46. ## math

is the number 1 a prime or composite number?

47. ## Economics

With Mordern Views, What Is The Interdependence Between Micro-economics And Macro-economics According To Leon Warlas And Coronet

48. ## Algebra

5^-1/2 x 5x^5/2(5x)^-3/2= 1/sqrt5 x sqrt5x^5 x 1/sqrt5x^3= ??? I need to simplify and I need help understanding what the next step is

49. ## Physics

An object moves a to b, 4kms due west and then moves from b to c, 3kms due north. Find the displacement

50. ## Chemistry

how would the presence of a white solid in a solution effect the solution's absorbance? it made its absorbance higher, but i'm not too sure why

51. ## physical science

zinc electrode is placed in a solution of lead nitrate.write a balanced equation

52. ## science

I need help with an acrostic poems or name fororn for lab sa

53. ## Math

The present ages of a man and his wife are as 6:4. Five years ago their ages were in the ratio 5:3. What is the age gap of the couple?

What is 1+1?

55. ## Spanish

1.______ teminado todos los quehaceres de la casa si nuestra madre no ______ regresado tan pronto. A: Hubiéramos, habría B: Hubiéra, habría C: Habríamos, hubiera D: Habría, hubiéramos I got A Is this correct?

56. ## Divine mercy school

The arithmetic mean of x,y andz is 6 while that of x,y,z,t,u,v and w is 9. Calculate the arithmetic mean of t,u,v and w

57. ## algebra

find the slope of each line. y=-1/2x=1

58. ## PHYSICS

a metre rule of length AB and mass 100g is suspended on a knife egde. if a mass of 200g is placed at 25cm mark from A at what point will another mass x be suspended from B?

59. ## physics

One of the standard tracks used in athletic events is a 400m loop. This track consists of two straight sections joined by semi-circular sections and one lap of the track in the inside lane is exactly 400 m. (a) What is the displacement of a runner in the

60. ## math

in the frustum of a cone,the top diameter is twice the bottom diameter. if the height is h cm, find the height of the cone

61. ## math

Jo Lee wants to hang three 3-inch by 5-inch prints on her wall. She wants to line them up vertically with an inch between each print. What is the minimum wall space that Jo Lee must have? Please explain!!!!

62. ## Life Science

determing whether expired air contains CO2. 1.Formulate hypothesis 2.Aim 3. a) idependent V, dependent and controlled variables 4. methods step by step 5. observation

63. ## math

At a popcorn factory, for every kilogram of popcorn that is popped, 100 grams are not popped. The factory pops 5 kilograms every day. What is the total weight in kilograms, of the unpopped corn in the month of april?

64. ## Math

Mr.jacobs budgeted \$1,200 for tiles. His sketch of the floor requires him to use 38 white tile. each white tile cost \$12. Write and solve an inequality to find the maximum amount he can spend on his brown tile. I'm not sure how to write and solve the

65. ## STATISTICS

The Erie Run Outlet mall has two NIKE stores, one is on Liberty street and the other on Barnes St. Two stores laid of differently, both owners claim their stores maximizes the amounts customers will impulse purchase. A sample of 10 customers at the Liberty

66. ## Selamola secondary

What is micro-organism that is regarded as non-living thing and its found only on Earth

A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? -5.8 km/hr -6.0 km/hr -2.0 km/hr -1.0 km/hr Thank you very much!!

68. ## math

Is (x+y)2 equal to (x2+y2)? Explain why or why not using an example to support your answer.

-3 * 1/4

70. ## Math

Two line segments intersect to form an angle that has a measure of 50.7degrees. What is the measure, in degrees, of an angle that is supplementary to this angle?

71. ## Chemistry

How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)? Show all calculations leading to an answer.

72. ## math

Jack says that adding 0 does not change a sum

73. ## math

Water is poured into a right circular cone with a height of 10 cm and diameter of 8 cm until it is three-fourths full. All this water is then poured into an empty cylindrical container with a radius of 5 cm and height of 9 cm. What is the height of the

74. ## Chem

Why doesn't tobbaco smoke in bloodstream kill you? (Molecular explanation)

75. ## Physics

On a drive from your home to town, you wish to average 44 mph. The distance from your home to town is 106 miles. However, at 53 miles (half way), you find you have averaged only 33 mph. What average speed must you maintain in the remaining distance in

76. ## total quailty management

Once we get our implementation started, what do we need to do in order to sustain our momentum?

77. ## Chemistry

Experiment 1: A has .20 M, B has .20 M and the initial rate is 2.0*10^-4M/min Experiment 2: A has .20 M, B has .40 M, and the initial rate is 8.0*10^-4M/min Experiment 3: A has .40 M, B has .40 M, and the initial rate is 1.6*10^-3M/min Using the data

78. ## college Algebra

Factoring 2a(a+3b) - 5(a+3b)

79. ## Math

Can you show me how to do the following: How many even integers are between - 4 and 4? Not sure how to even do this problem

80. ## Health

What is the primary function of the skeletal muscle?. A. Contraction B. Heating the body C. Protecting the body from harm D. Pumping blood to the rest of the body

81. ## Math

(x+3) (x+9) x sqrt +27

82. ## Math

The length of a rectangular field is seven meters less than four times the width. The perimeter is 108 meter. Find the width and length of the field. How do I do this?

83. ## Math

what is 30% of \$325? 30/100 *325= \$97.50

84. ## Math

What percentage is \$6 of \$20? 6/20 *100 = 30%

85. ## Math

3x - 2= 8 3x-2+2 = 8+2 3x= 10 3x/3 = 10/3 x= 3 1/3

86. ## total quailty management

If Six Sigma were terminated in an operation, would anything happen to the quality of the products produced? Why or why not?

87. ## Math

If 5x +4y and 4x +3y =5 15x +12y =18 16x +12y = 20 31x/31= 38/31 x= 1 7/31 20x +16y =24 20x +15y = 5 31/y/31 = 29/31 y=29/31 x +y = 1 7/31 + 29/31 2 5/31

88. ## algebra2

write the slope-intercept form of the equation of each line x-y=-7

14-2.6+9

90. ## Algebra

I have 2 problems and 1 problem to check on. Write a mathematical expression to represent each situation. Then find the value of the expression to solve the problem. #1 A football team loses 4 yards on each of three plays. Then they complete a pass for 9