Newest questions posted by Jay
  1. statistics

    A researcher is interested in comparing the maturity level of students who volunteer versus those who don't. Calculate the correct t-test. Maturity scores for non-volunteers: 33, 41, 54, 13, 22, 26 Maturity scores for volunteers: 41, 48, 61, 72, 83, 55
  2. Algebra

    A man invests $10, 000 in an account that pays 8.5% interest per year, compounded quarterly. What is the amount of money that he will have after 3 years
  3. Algebra

    How much would you need to invest to get $30,000 in 10 years for an account offering 2.54% interest?
  4. chemistry

    what volume(in cm3) of lead (density=11.3 g/cm3 ) has the same mass as 100 cm2 of red wood (density = 0.38 g/cm3)?
  5. Chemistry

    Zinc replaces Hydrogen in hydrochloric acid. Write the equation and identify how many grams of this acid is required to produce 10^24 atoms of hydrogen.
  6. science

    The first full-scale oceanographic research expedition was conducted by the:
  7. English

    Here is the question What Is the Secret to Reaching Someone With Words? In this discussion, you will post issues related to connecting generations. To support your ideas, refer to the texts in this section, other texts you have read, and your personal
  8. science

    what materials could have been found in the giant gas cloud that formed the solar system A hydrogen and helium B hydrogen and oxygen C carbon dioxide and oxygen D liquid and solid water
  9. Trigonometry

    The base of a trapezoid are 397.62 and 254.15 respectively, the angles that the sides make with the longer base are 68°39.2' and 72°6.0'. Find the sides and the diagonal. Need help with this pls.
  10. Math

    Craig went to an auction and bought five different items. Use the clues below to determine the price he paid for each item. 1. the chair was the most expensive item, which sold for $95. 2. The range of the prices of the five items was $75. 3. The stereo
  11. algebra

    Rita is spending more time at home to study and practice math. Her efforts are finally paying off. On her first assessment she scored 58 points, then she scores 63 and 68 on her next two assessments. If her scores continued to increase at the same rate, on
  12. Health

    Which organ is part of both the respiratory system in the digestive system? A. Epiglottis B. Nose C. Larynx D. Esophagus (Taken by original poster which had unreliable answers.)
  13. history

    In at least one hundred and fifty words, make an argument for which historical figure from this lesson had the most negative impact on society.
  14. Math

    The basketball court is 50 feet across by 94 feet long. There is a black line painted around the entire basketball court. What is the total area of the basketball court?
  15. Math

    There is a shelf in the library for the books by authors with the last names of Amster, Anderson, Axelson, Bannister, Baxter, and Bayer. The following table shows the number of books that the library has by these authors and how many of those books are
  16. Whitaker

    A professor records the time (in minutes) that it takes 16 students to complete an exam. Compute the SS, the variance, and the standard deviation assuming the 16 students constitute a population and assuming the 16 students constitute a sample. (Round your
  17. math

    Do males or female high school basketball players have a better chance of playing on college teams? On professional teams? Include probability numbers high school players: male - 549,500 female - 456,900 college players: male - 4,500 female - 4,100 college
  18. physics

    A child of mass 20.2 kg takes a ride on an irregularly curved slide of height 6.12 m. The child starts from rest at the top. The acceleration of gravity is 9.8 m/s2 . If a frictional force acts on the child, what is the magnitude of the mechanical energy
  19. physics

    A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work
  20. physics

    A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work
  21. Math

    How do you rotate a point other than the origin? Can you give me a video or explain it?
  22. science

    How many protons are in the isotope Oxygen-20?
  23. Math

    Ed invests $68,000 in certificates of deposit (i.e., CDs) paying 1.75%. How much additional money does he need to invest in stocks that are expected to generate a return of 11.8% so that the average return on all of Ed’s investments is 7.5%?
  24. Algebra

    Suppose A – D = E, that N = 160,000, E/A = .75 and N/E = .40. Compute D/A.
  25. Algebra

    Assume that S/A = 5.2, D/A = .40, N/E = .75 and A = D + E. Solve for N/S.
  26. phyics

    A tennis player places a 68kg ball machine on a frictionless surface. the machine fires a 0.057 kg tennis ball horizontally with a velocity of 38m/s toward the north. What is the final velocity of the machine? I used p1+p2=P1'+p2' but I can't seem to get a
  27. physics

    The linear impulse delivered by the hit of a boxer is 104 NS during the 0.431s of contact. What is the magnitude of the average force exerted on the glove of the other boxer?
  28. Calculus

    James has 6 identical boxes shaped like rectangular pyramids. The total volume of all the boxes together is 1,024.8 cubic inches.If each box has a height of 6 inches,what is the base area of each box ?
  29. physics

    A 4kg mass moves in a circular path of 7m radius on a frictionless horizontal table. It is attached to a string that passes through a frictionless hole in the center of the table. A second 87kg mass is attached to the other end of the string. Acceleration
  30. physics

    a plane is flying in a horizontal circle at 99.5 m/s. The 92.6 kg pilot does not want his radial acceleration to exceed 9.25g. What is the minimum radius of the circular path. The acceleration of gravity is 9.8 m/s^2.
  31. physics

    a plane is flying in a horizontal circle at 99.5 m/s. The 92.6 kg pilot does not want his radial acceleration to exceed 9.25g. What is the minimum radius of the circular path. The acceleration of gravity is 9.8 m/s^2.
  32. physics

    A rotary speed of 2010 m/s. The rotating rod of 15.7 cm long. Assume the speed quoted is that of the end of the rod. What is the centripetal acceleration at the end of the rod?
  33. Math

    Write the first five terms of the sequence defined by the recursive formula an = 5an-1 -1, with a1=0
  34. Math

    The graph of a rational function has a local maxima at (-1,0) and (8,0). The complex number 2+3i Is a zero of the function. What is the least possible degree of the function Answer is 6 But i need help with an explanation.
  35. trigonometric identities

  36. maths

    find all possible pairs of two natural no whose sum is 77 and their gcd is 7
  37. physics

    A 468 kg bear grasping a vertical tree is sliding down at constant velocity. The acceleration of gravity is 10m/s^2. What is the friction force that acts on the bear.
  38. 5th grade science

    Can you check the following? 1. Which statement about vascular plants and non-vascular plants is true? a. vascular plants produce seeds and non-vascular plants produce spores b. both plant types produce cones c. both plant types are considered angiospersm
  39. physics

    A 2.63 kg ball is dropped from the roof of a building 180.6 m high. While the ball is falling to Earth, a horizontal wind exerts a constant force of 13.0 N on the ball. How long does it take to hit the ground? The acceleration of gravity is 9.81 m/s2 . How
  40. physics

    A 3.1 kg block initially at rest is pulled to the right along a horizontal frictionless surface by a constant horizontal force of 16.6 N. Find the speed after it has moved 3.8m.
  41. math

    the population of Houston was 6.18 million, and increased 2% per year, what is the doubling time?
  42. Math

    a website has 500,000 members in 2010. The number of members increases by 15% each year. Write an exponential growth function that represents the website membership t years after 2010. use the equation to find: how many members will there be in 2016.
  43. Math

    a machine originally cost $15,600 and at the end of 3 years value of $7500. what is the average rate of change in value per year of the machine between its purchase and the end of 3 years.
  44. Sat math

    if y=m^4=n^3 and y is greater than 1 than mn=? a) y^1/12 b) y^1/7 c) y^7/12 d) y^7
  45. physics

    A projectile is fired off a cliff at an angle of 60 degrees to the horizontal. The height of the cliff is 48 meters and the velocity of the projectile is 80 m/s. Find the range (dx)
  46. algebra

    how do you write an expression showing x=the square root of 45^2 + 30^2
  47. physics

    A man can throw a ball a maximum horizontal distance of 73.4 meters. the acceleration is 9.8 m/s^2. How far can he throw the same ball vertically upward at the same initial speed?
  48. Computer Science

    If a file named "myfile" has -r--r--r-- permissions.  Write the command to change it to -rwxr-xr-- permissions using both the octal and symbolic modes of the appropriate command (octal mode was included in the instructor's lecture and published on this
  49. college math

    A teenager's heart pumps an average of 7200 L of blood every 24 hours. what is the rate of change of volume of blood? That is per 1 hour
  50. sat math

    An employee's training time and meeting time cannot exceed 16 hours a month. For every hour of training there is 2 hours of meeting. There should be at least 2 hours of training every month. What is the difference between the maximum and minimum number of
  51. Math

    There are 28 cars. 20 are white. The rest are blue or tan. There are 4 more tan cars than blue, How many cars are blue?
  52. Algebra, Trig

    You are standing at a base of a Ferris Wheel which is 4 m above ground while your friend is riding. The Ferris Wheel is 8m in diameter. Describe how the shape of the sine curve models the distance your friend is to the platform you are on. Identify the
  53. Maths

    A building, B, is observed from two points P and Q which are 250 m apart. The angles PQB and QPB are found to be 67 degrees and 73 degrees respectively. What is the distance, to the nearest metre, of P from the building?
  54. Program Development

    Design a program to project several years of population growth. The user should be able to enter in the number of years, the current population, and the growth rate. Your output screen should print out the numbers the user entered, as well as the results
  55. social studies

    After Louis XVI was executed, Maximilien Robespierre led the Committee of Public Safety in carrying out what became known as the A. Scientific Revolution. B. Industrial Revolution. C. Reign of Terror. D. Hundred Years’ War.
  56. Science

    An animal that has body parts arranged around a central point has: A.bilateral symmetry. B.radial symmetry. C.asymmetry. D.a distinct head and tail end.
  57. math

    Jill Moran has grades of 95 and 87 on her first two calculus tests. What is the minimum score on her third test that will give her an average of at least 90?
  58. Chemistry

    When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. If 22.9 grams of magnesium nitride are added to 31.0 grams of water, how many liters of ammonia should be produced (assuming standard
  59. Chemistry

    When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. 26.0 grams of magnesium nitride are reacted with 17.6 grams of water. 1. How many grams of magnesium nitride will remain after reaction is
  60. Maths

    For what values of k does the graph of y=5x^2 + kx + 1 have: a. One x-intercept b. two x-intercepts c. No x-intercepts
  61. Maths

    Find the possible equations of each of the following quadratics if their equation is of the form y = (x-h)^2 and their graph passes through the point: a. (1,16) b (3,9)
  62. Maths

    Two missiles, 2420 km apart, are launched at the same time and are headed towards each other. They pass after 1.5 hours. The average speed of one missile is twice that of the other. What is the average speed of each missile?
  63. Maths

    1.A projectile's height (in metres) is given by the expression t(14-t), where time t is in seconds. How long is the projectile above a height of 40m? 2. The area of a right-angled triangle is 60 square units and the lengths of the two shorter sides differ
  64. Math

    0 Tutors Online Right Now Math 20-1 Help What is this? What is tutors online right now mean? I need help What are points? See all FAQ Aron is training for a 10 km marathon swim in 19 weeks. Each week, his training plan includes a long distance swim. In
  65. Maths

    In a race, each of the four greyhounds run at its own constant speed. They all start at the same point on a circular track and at 30 seconds into the race, while all are still on their first lap, they have spread out so they are at four corners of a
  66. Maths

    In the country Fivethree, they have only $3 and $5 notes. How many amounts, from $1 to $100 inclusive, cannot be made up exactly with these notes? A. 2 B. 3 C. 4 D. 7 E. 21
  67. chemistry

    A single, neutral iodine atom has
  68. College Physics

    A car of mass 1000 kg is traveling at a constant 25.0 m/sec along a straight, level highway. There is a force of thrust acting on it in the forward direction (the direction the car is moving) of 3000 N. There are drag forces and forces of rolling friction
  69. Math

    A water cooler can hold 40 litres of water when full what fraction of water is left in the cooler if 16 litres is used?
  70. geometry

    Jose is planning to spread fertilizer on his rectangular yard.His yard has a length of 40 ft and width of 25 ft.How much fertilizer does he need
  71. Math

    Printer A prints 50 cards per minute while Printer B prints 40 cards per minute.How long will it take both printer working simultaneously to print 1350 cards together?
  72. math

    Select the equation in which the graph of the line has a positive slope, and the y-intercept equals -8. Question 1 options: 5x + y = 50 5x - 10y = -12 x - 2y = 10 10x - 5y = 40
  73. math

    100 ft rope is cut in two pieces so that the larger piece is 2 less than twice the shorter piece. What is the length of the larger piece?
  74. math

    What would you need to multiply by in order to solve this system of equations using the linear combination (elimination) method? {6x−2y=4 7x+5y=3 Multiply the 1st equation by 3 and leave the 2nd equation alone. This will eliminate the y's when you add
  75. English

    The play "Latins in La-La Land" would be an example of _____. Question 8 options: A) Historical Theatre B) Political Theatre C) Cultural Theatre ** D) Commercial Theatre
  76. math

    Which function grows the fastest for large values of x? f(x)=1.5x f(x)=8x f(x)=3x f(x)=4x2+3
  77. math

    Jimmy began deriving the quadratic formula as shown. ax² +bx +c = 0 x² +b/ax+c/a=0 x² +b/ax=−c/a x² +b/ax+(b/2a)² =−c/a+(b/2a)² What should Jimmy do next? Subtract x² from each side. Factor the trinomial. Add x² to each side. Subtract b2a from
  78. English

    A raisin in the sun. Regina allows Horace to die. A) Falling Action B) Climax C) Resolution D) Denouement
  79. Math Algebra

    Ann is 8 years older than Dawn. Dan is 5 years younger than Dawn. The sum of their ages is 108. How old is Dan? Please explain work too.
  80. chemistry

    How many grams of ammonia are produced when 32g of nitrogen react with excess hydrogen? N2 + 3H2 --> 2NH3
  81. LA

    What is the climax of Mieko and the fifth treasure.
  82. Physics

    Two pellets, each with a charge of 0.80 microcoulomb (8.0×10−7 C ), are located 2.8 cm (2.8×10−2 m ) apart. Part A Find the electric force between them.
  83. algebra

    What is the domain for f(x)=8(2)^x
  84. life

    what is gay?
  85. Math

    A, B and C are 3 points on the level ground.B is due south of A . The baering of C from A is 085. A vertical mast of height 50m stands at A. The angle of elevation of T from B is 44 and the angle of elevation of T from C is 28 Calculate AB,AC, CB
  86. Algebra

    The Community Recreation Center is developing plans for a new sports facility. Community members can submit suggestions for the new facility, along with basic scale drawings of their ideas. Elena wants to include a new 15- by 30-meter basketball court in
  87. Civil Rights History

    I am stuck on a homework question, and I can't seem to find any information on this. Which organization was considered by many African-American leaders as the most progressive toward civil rights issues in the 1930s? a. Communist Party of the USA b.
  88. Chemistry

    How much oxygen (in grams) will form from 44.2 mg of N2O5? 2N2O5(s) → 4NO2(g) + O2(g) ____× 10^-3(g) O2

    A person with the weight of 691 N stands on a bathroom scale in a motionless elevator. The elevator begins to move and the scale momentarily changes to 499 N. (a) Draw a force diagram of the situation. (b) Create a qualitative vertical equation for this
  90. geometry

    The foot of a 25-foot ladder is 15 feet from a wall. If the ladder is pushed until its foot is only 7 feet from the wall, how much farther up the wall is the ladder pushed?
  91. math

    The box and whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grades at Lincoln Middle School.
  92. Science

    Granite lasts a long time when it is used for building in areas where
  93. math

    A triangle has vertices at S(4,1), T(2,-3),and U(4,0). The triangle is translated up 3 units. What are the coordinates of the vertices of the image?
  94. chemistry

    A mixture of H2(g) and N2(g) has a density of 0.221 g·L−1 at 301 K and 501 torr. What is the mole fraction composition of the mixture?
  95. maths

    Georgia spent 1÷5 of her money on sweets and used the rest to pay for her savings. What fraction of her money did she pay as saving?
  96. stats

    Based on data from a statistical abstract, only about 10% of senior citizens (65 years old or older) get the flu each year. However, about 27% of the people under 65 years old get the flu each year. In the general population, there are 15% senior citizens
  97. Exponential

    In 1626, Peter Minuit traded trinkets worth $24 for land on Manhattan Island. Assume that in 2014 the same land was worth $4 trillion. Find the annual rate of interest compounded continuously at which the $24 would have had to be invested during this time
  98. math

    The graphs of ​ f(x)=−5/3x+9 ​ and ​ g(x)=2^x−1​ intersect at (3, 4) . What is the solution of −5/3x+9=2^x−1 ? Enter your answer in the box.
  99. math

    What is the solution of the system of equations? y=5/6x+1 −x+y=2 Enter your answer in the boxes.
  100. math

    What is the solution of the system of equations? 13x−6y=2 3x−4y=−10 Enter your answer in the boxes.


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