Questions Asked on
February 19, 2018

  1. Statistics

    Which Professor? Suppose Professor Alpha and Professor Omega each teach Introductory Biology. You need to Decide which professor to take the class from and have just completed your introductory statistics course. Records obtained from the past students

  2. AP Chem

    Which molecule has the strongest intermolecular forces? A. HOCH2CH2CH2OH B. CH3CH2CH2OH C. CH3CH2CH2CH3 D. HOCH2CHOHCHOHCH2OH I'm pretty sure it's C.

  3. math

    determine which figure matches the pattern for the givin base side and front Base 2 squares side two side one up front two up

  4. maths

    The sum of two numbers is 35. The second number is four times the first number.Work out the 2 numbers

  5. math

    Which set of three side lengths will NOT form a triangle? A 17, 12, 6 B 25, 38, 13 C 36, 14, 27 D 39, 44, 6

  6. Chemistry

    Which of these most accurately describes the motion of gas particles? 1.) particles making up gases are mostly fixed in their locations and have vibrational motion. 2.) particles making up gases have few intermolecular interactions and are free to move.

  7. Math

    Marisa spent 3/4 of her money on a necklace. She spent 1/2 of the remainder on earrings. The necklace cost $30.00 more than the earrings. How much did the necklace cost?

  8. Algebra I

    What is the sum or difference? 2x^4 - 8x^4 a. -6x^8 b. -6x^4 *** c. -16x^4 d. -16x^2

  9. science

    Examine the situation. Lloyd is studying the effect of breakfast cereal on the health of rats. He suspects that the cereal may be unhealthy. He feeds rats various amounts of breakfast cereal over a six-week period. He weighs the rats using a digital lab

  10. Math

    In December 2010, the average price of regular unleaded gasoline excluding taxes in the United States was $3.06 per gallon, according to the Energy Information Administration. Assume that the standard deviation price per gallon is $0.06 per gallon to

  11. math

    A square is inscribed inside a circle with radius r cm. a) Express the edge length of the square in terms of r and so find the area of the square in terms of r. Using side, 's' would make it much easier, but the question asks for me to find the area of the

  12. math

    Solve for y in the equation tan(3y +32)=cot(y-32)

  13. Math

    The 16th term of an AP is three times the 5th term. If the 12th term is 20 more than the 7th term, find the first term and the common difference.

  14. CHEM

    A reaction of 48.5 g of Na and 53.7 g of Br2 yields 55.4 g of NaBr. What is the percent yield? 2Na+Br2 2NaBr

  15. math

    A chocolate box has dimension 50cm×35×10cm. If60 boxes of chocolate are to be covered by wrapper,how many square meters of wrapping material will be required?

  16. Algebra

    They cruise ship travels 20 miles due north, then 35 miles due east. How far is the ship from where it started?

  17. Physics

    A fisherman is fishing from a bridge and is using a "50.0-N test line." In other words, the line will sustain a maximum force of 50.0 N without breaking. What is the weight of the heaviest fish that can be pulled up vertically, when the line is reeled in

  18. math

    A cone has a height of 5 inches and a circumference of 56.52 inches. Which measurement is closest to the volume of the cone in cubic inches? Use 3.14 for 7x5. a.1695.6 b.1271.7 c.887.36 d.423.9

  19. Physics

    A taut massless string connects two boxes. The boxes are placed on an incline plane at θ = 32.00. What is the acceleration of boxes as they move down the incline, given m2 = 1.0 kg, m1 = 7.2 kg, μ2 = 0.10 and μ1 = 0.20.

  20. psychology

    Please check my answers for these questions, thank you. 1. A case study is A. a study of the legal ramifications of psychological research B. an intensive study of a person or group* C. observation with minimal interference D. a study of a group of people

  21. Maths

    What does the term adaptation mean? how does adaptation explain the patterns of distribution of plant and animal species in the world? I need help.. Can someone give me the answer? Thanks.. :3

  22. History

    In what ways did the rise and decline of the Qing dynasty parallel that of earlier dynasties? As far as I can tell, it's mostly motives and justification for the rise. Relating to the demise, however, maybe weak gov, peasant revolts, and just being

  23. English

    Which of these does William Wordsworth celebrate in "I Wandered Lonely as a Cloud" nature aloneness the death of reason human companionship I think either A or B, but I can't decide which.

  24. Chemistry

    Molecular crystals consist of molecules held together by intermolecular forces. Ice is a good example. In ice, water molecules are held together by ______, and by London dispersion forces. Intermolecular forces are _______ than ionic or covalent bonds.

  25. English

    Living with People Tip Tip was discovered on an island by some curious explorers. The island was left alone by the modern world for the past several hundred years. When one of the explorers saw the tip of the island, he asked his friends to turn around.

  26. math

    The width of a rectangle is 3 units less than the length. The area of the rectangle is 28 units. What is the width, in units, of the rectangle?

  27. physics?

    In order to wake a sleeping child, the volume on an alarm clock is tripled. Under this new scenario, how much more energy will be striking the child's ear drums each second? A. twice as much B. three times as much C. approximately 4.8 times as much D. six

  28. chem

    The radius of a single atom of generic element X is 197 picometer(pm) and crystal of X has a unit cell that is face centered cubic calc the volume of the unit cell. Please help and show all work

  29. Calculus (increasing/decreasing)

    Find the interval(s) where the function is increasing and the interval(s) where it is decreasing. (Enter your answers using interval notation. If the answer cannot be expressed as an interval, enter EMPTY or ∅.) f(x) = (5 − x^2) / x my work: a)

  30. science

    Examine the situation. Gregor Mendel wondered how traits were inherited, but the technology to study genes was unknown. By crossing pea plants and observing their traits, he concluded that the traits of living organisms are controlled by structures called

  31. chem

    determine how many grams of N2 are produced from the reaction of 8.75 g of H2O2 and 5.43 g of N2H4. 2H2O2+N2H4 4H2O+N2 g N2?

  32. Statistics

    Find the range population of Ethan and the population standard deviation Ethan: 9, 24, 8, 9, 5, 8, 9, 10, 8, 10

  33. Math

    Suppose that D + E = A, that N/A = 0.18 and that D/A = 0.85 . Solve for N/E.

  34. Math

    f(x) = 9x^3+2x^2-5x+4 and g(x) = 5x^3 -7x+4 What is f(x) - g(x)? Write the final answer in factored form.

  35. Chemistry

    IF 24.5 mL of the .10M NaOH solutino is required to reach the endpoint in a titration with an unknown monoprotic acid, how many moles of the acid were present?

  36. statistics

    A cereal manufacturer seeks to test their newest product against a competitor’s. A group of 100 children was asked to evaluate each brand, and then to express a preference. To guard against bias, neither the children, nor the technicians serving them,

  37. Chemistry

    A 3.00- L flask is filled with gaseous ammonia, N H 3 . The gas pressure measured at 28.0 ∘ C is 2.05 atm . Assuming ideal gas behavior, how many grams of ammonia are in the flask?

  38. science

    Which option correctly describes the scientific way of thinking? (Select all that apply) rational skeptical practical empirical B,D?

  39. Science Biology

    Help please reviewing for test and in my notes I have a comment. Animal cell oraganella are larger than plant cell organella is this correct - I have searched everything and cant find an answer.

  40. Math

    Write an equivalent expression. Use an associative law. (x + 5) + y

  41. Calculus

    Determine whether the sequence (-1)^n(n/(n+1)) diverges or converges. I think it diverges because the limit as n approaches inf. of n/(n+1) is 1, and the limit of (-1)^n does not exist.

  42. Geometry

    Help. I have to angles and a side how do I do this Angle 1: 90 degrees Angle 2: 63 degrees Side 1: 5 mm so I know angles need to add up to 180 so 90 +63=153 180-153=27 so the angle is 27 How do I figure out the sides? I have 5mm to start I am really

  43. Ap Chemistry

    Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.038 M NaOH. (a) hydrobromic acid (HBr) (b) lactic acid (HC3H5O3) (c) sodium hydrogen chromate (NaHCrO4)

  44. Geography

    What countries border India?

  45. Geography

    What sea borders Italy, Croatia and Albania?

  46. Science

    What is the relationship between inertia and mass? (Is inertia higher or lower when you have more mass?)

  47. math(PLEase help me check.)

    1) C=md+t The cost C, of a business trip is represented by the equation above, where m is a constant, d is the number of days of the complete trip, and t is the cost of transportation, which doesn't change. If the business trip was increased by 5 days, how

  48. Science

    Do all cells in a person have the same banding pattern?

  49. Maths

    A rope of length 84cm is made into a circle of which the area exceeds the area of a rectangle by 20 cm square. The length of the diagonal of the rectangle is 13cm. Find its area.

  50. Math

    the average length of time for students to register for fall classes at a certain college has been 50 minutes. a new registration procedure using modern computing machine is being tried. if a random sample of 12 students had an average registration time of

  51. Science

    I need some one to help me do my portfolio for reasons for the seasons I have to demonstrate how the angle of the sunlight affects its intensity, and I don't know how to do that.HELPPPPPPPPPPPPPPPP

  52. math

    A rubber band is strung around six circles (each with radius r cm). a) Show that the area of the shape is given by the expression r^2(12+6√3+π). b) Show that the total length of the rubber band is given by the expression 2r(6+π).

  53. Spanish

    in which of the following ways is the National Museum Fair in Costa Rica similar to International Museum Day in the United States?

  54. maths

    If the cost price of an item is 25% of its selling price , what is the % of profit ?

  55. maths

    At what rate of % per annum, will the simple interest on a sum of money become 3/4 of the principal in 6 yrs ?

  56. Math

    Need help working this problem out, any assistance is appreciated. A dance studio measures 150 feet by 120 feet. A scale drawing of the dance studio floor measures 10 units by 8 units. What scale was used to create the scale drawing? A) 1 unit: 8 feet B) 1

  57. Math

    200 cans of food were distributed to 3 charity homes. 2/5 of the cans were given to the first home, 1/3 of the remainder to the second home and the rest to the third home. How many cans did the third home receive?

  58. maths

    X and Y can together complete a wk in 3 days. If X alone can complete the work in 9 days. In how many days can Y alone complete the work ?

  59. maths

    Raman completes 50% of a wk in 10 days. Mohan then joins Raman on the 11th day and they together complete the remaining wk in 2 days.How long will take if the entire wk is entrusted to Mohan alone ?

  60. Geometry (PLEASE HELP!!!)

    what are the values of a and b? 1) a=9/2, b=15/2 2) a=15/2, b=9/2 3) a=16/3, b=15/2 4) a=9/2, b=13/2

  61. maths

    With a uniform speed a car covers a certain distance in 8 hrs. If the speed of the car is increased by 4 km per hour , the same distance can be covered in 7 1/2hrs.Find the distance covered ?

  62. Physics

    A frog in a hemispherical pod finds that he just floats without sinking in a fluid with a density of 1.33 g/cm3. If the pod has a radius of 5 cm and negligible mass, what is the mass of the frog? Answer in units of kg.

  63. Math - Algebra

    An architect is designing a building in the shape of a rectangular pyramid. The number of windows on each floor forms an arithmetic sequence. There are 76 windows on the 7th floor, 68 on the 8th floor, and 4 on the very last floor Find an explicit formula

  64. Math Algebra Help

    The men’s U.S open tennis court is held annually in Flushing Meadow New York City. In the first round of the tournament, 64 matches are played. In each successive round, the number of matches decreases by 1/2. Make a rule for the number of matches played

  65. Math

    Explain how the areas of a triangle and a parallelogram with the same base and height are related.

  66. social studies

    I'm reading an article and it says: "They believe that sensible business regulations are incredibly important, and that business regulations should promote confidence in the economy among both consumers and businesses. " What is a sensible business? I

  67. physics

    The figure below is a scaled representation of a planet's orbit with a semimajor axis of 1.528 AU. (Use the exact values you enter in previous answer(s) to make later calculation(s).) (a) Find the ratio of the aphelion-to-perihelion distance. rA rP = (b)

  68. History

    How were prisoner of war camps different from internment camps? 1 Prisoner of war camps held fewer people than internment camps. 2 Prisoner of war camps held captured soldiers. 3 There was more freedom in prisoner of war camps. 4 Prisoner of war camps were

  69. Math

    In a class 1/3 are boys.If 2/5 of the boys are absent, what fraction of the boys is present?

  70. statistics

    You have been asked to do a survey of student satisfaction with MyMathLab courses at South University. Describe how you would obtain a sample of these types: stratified and simple random

  71. math

    Water is being pumped out of a pool. the number of gallons of water W left in the pool at time t in minutes can be modeled by W(t) = -7t+ 350. Find the y-intercept and explain what it represents in this problem.

  72. Maths

    Mr Lin gave a total of 3600 to his wife and two children. His wife received 500 more than first childvand the second child received half as much as first child. How much did first child receive