Questions Asked on
June 13, 2017

  1. Math

    Mr. Rodriguez is packing bags of snacks for his children’s lunchboxes. If he has 20 blueberries and 30 grapes, what is the maximum number of bags of snacks that he can pack so that each bag has the same number of blueberries and grapes?

  2. Maths

    Two boats A and B left a port C at the same time on different route .B travelled on a bearing of 150 degree and A travelled 8km and B had travelled 10km ,the distance between the Two boats was found to be 12km .calculate the bearing of A's route from C.

  3. HVAC

    Two HVAC/R technicians are discussing the tape used in HVAC/R repairs. Technician A says that cloth duct tape is preferred for use in attics. Technician B says that UL 181 tape is normally required for duct closing systems. Which one of the following

  4. Physics

    A rectangular track is 40m long 30m broad.A man starts walking from one corner to another . Find the distance travelled and displacement.

  5. Maths

    In an industrial area three factories give out sirens at an interval of 40 min, 1 hour anf 1 and a half hour. respectively. Find the time between the two simultaneously sounds of three sirens.

  6. math

    one hundred meters of fencing is available to enclose a rectangular area next to a river.Give a function A that can represent the are that can be enclosed, in terms of X.

  7. math

    Josh poured 38 gallons of water into 6 buckets. He poured the same amount into each bucket. How much water did Josh pour into each bucket?

  8. Math

    The number of boys in a class is 10 less than twice the number of girls. Find the total number of the students in the class, if the number of boys is 5 more than the number of girls.

  9. Thermodynamics

    400 g of water are emptied at 20 ° C in a vessel. The container is placed at Fire of a flame that gives it a certain amount of thermal energy of So that it takes 5 minutes for the water to reach a temperature of 90 ° C. If the vessel does not absorb

  10. 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

  11. english

    What is the purpose of a response-to-literature essay

  12. Physics

    What is the polar notation for a vector that points from the origin to the point (0,5.00) ?

  13. entrepreneurship

    is increasing the entrepreneurial orientation of firm always a good thing? or are there circumstance or environment in which further pursuit and opportunities can diminish firm performance?

  14. Chemistry

    Each of the following mixtures is placed in a dialyzing bag and immersed in distilled water. Circle the substances that will be found outside the bag in the distilled water. a. KCl solution and glucose solution b. albumin solution (colloid) c. albumin

  15. Lisa

    A man leaves his front door, walks 330 m east and 320 m north, stopping at the edge of a cliff. He then takes a penny from his pocket and drops it from the cliff, which is 10 m high. What is the magnitude of the displacement (in meters) of the penny? I'm

  16. Math

    The number of boys in a class is 10 less than twice the number of girls. Find the total number of the students in the class, if the number of boys is 5 more than the number of girls.

  17. physics

    A galvanometer of resistance 50 ohm which gives a full deflection for 1mA is to be adapted to measure currents up to 5A. Calculate the resistance of the resistor required

  18. Math

    Estimate the value of 51 to the nearest whole number

  19. Maths

    If sina+7sinb=4 (sinc+2sind) and cosa+7cosb=4 (cosc+2cosd), how do I prove that 2cos(a-d) =7cos(b-c)?

  20. Physics

    What is the displacement from a starting position of (14.0,3.0)m to a final position of (-3.0,-4.0) m?

  21. 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?

  22. Algebra

    The height , h, in feet, of a bottle rocket is modeled by: H = -16t^2 +60t where t is the time in seconds. A. Factor the expression. B. What is the height of the rocket after 2 seconds? C. What is the height of the rocket after 3.75 seconds? Explain the

  23. math

    a falcon sitting in its nest sees a mouse on the ground in a nearby field. if the falcon flies directly to the mouse, at what angle with the ground will the falcon dive to catch the mouse if his nest is 200 feet in the air and the mouse is 400 feet from

  24. Forensic science

    The_____________spectrum is so complex it is considered to be unique: Visible Ultraviolet Infrared Microwave Fluorescence

  25. algebra

    When using the big hose and the small hose, Sam can fill her pool in 15 minutes. The small hose when used alone takes 60 minutes to fill the pool. How long would it take Sam to fill her pool using only the big hose? Don't understand how to set up equation.

  26. Abnormal child psychology

    Which of the following is true regarding late starters A. Deviant behavior is never due to inadequate parental monitoring? B. As a group, they have more deviance than any other group C. They develop aggression only as adults D. There's less research

  27. Algebra 2

    The value of a baseball card can be modeled by exponential decay. The value will decrease at a rate of 0.2% each yeah. The card was originally valued at $250 in the year 2000. A- Use the exponential decay formula to write an equation to model the

  28. English

    1. He is master of the situation. 2. He is the master of the situation. ........ In dictionaries, I could see #1, not #2. Can't we use 'the' before 'master' here? 3. I met Father on the street. 4. I met father on the street. 5. I like Master very much. 6.

  29. Math

    3/4 of a group of tourists is twenty one people. 4/7 of the whole tourist group go to restaurant for lunch. How many people go to the restaurant?

  30. Math

    What is the largest seven digit number with the 8in the thousands place

  31. Math

    I am a 2-digit multiple of 50.What number am I?

  32. chemistry

    Write the anode reaction for the electrolysis of the concentrated zinc chloride solution using zinc electrodes

  33. math

    Ram deposited a certain amount in bank to earn a compound interest at a rate of 10%.The difference between interest on amounts in 3rd and 2nd year is 12100.what amount did ram deposit?

  34. Math

    Amira and Malika are counting their school books. Amira has four times 7 less than the number of Malik's books. If Amira has 29 books how many books does Malika have?

  35. Math

    A barber and his apprentice earn $4900 in a week. The barber earns $200 more per day than his apprentice. How much does the apprentice earn in one day?

  36. math

    If sina+7sinb=4 (sinc+2sind) and cosa+7cosb=4 (cosc+2cosd), how do I prove that 2cos(a-d) =7cos(b-c)?

  37. phisical science

    what is the role of mass in newtons second law?

  38. Math

    What is the greatest number that can be rounded off to 100?

  39. Algebra

    Is H=-4.9t²+vt+s the formula for a projectile motion, where h is height in meters t time in seconds and v velocity in meters per second and s start height in meters

  40. Calculus

    Hi, I have this question here that I'm not sure about. Any help is appreciated. Evaluate the integral from 1 to 3 of dx/(x-2). This seems like it should be really simple- is it 0?

  41. Physics 1st paper

    Two vectors of magnitude 8 unit each are acting at a point making an angle120 degree with each other.determine the magnitude

  42. Maths

    Express 14 upon root six ➖ root 5 ➖ root eleven with rational denominator

  43. stat

    wolf has an average weight of 44 lbs. with a standard deviation of 3 lbs. what percent of wolves weigh under 40 lbs.?

  44. history

    What were some of the strategies that the NAACP and others employed to influence President Roosevelt and the government?

  45. Chemistry

    The pressure changes from 760mmHg to 742 mmHG. When that occurs, the volume changes from 2.8L to 3.1L. The initial tempature is 20 celcious. What is the new tempature if miles remain the same? When I did this I subtracted 760 to 742 to get 18 and

  46. science

    Is there any effect in the mass of an atom if it becomes negatively charged? I know that atomic mass and mass number are two different things but the change in electrons (although may not affect the mass number) may affect the atomic mass, wouldn't it?

  47. science

    Any place inside a hachure line is a _____ elevation than the hachure line.

  48. Chemistry

    I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The

  49. physics

    A mountaineer is doing a vertical rappel. She is using a big boulder/stone as her anchor. The Mountain guides association advises that in this type of situation, the boulder should be bigger than a refrigerator. The boulder should be sitting on a surface

  50. physics

    A ball is dropped downward after 1 sec its velocity is 20m/s another ball is dropped from the same point after 2 sec its velocity will be

  51. Math

    The ratio of the number of men to the number of women in a club is 3:7.There are 12 more women than men.How many members are there altogether?

  52. Math

    Joseph is 3/5 times as old as John.What is the ratio of John's age to Joseph's age?

  53. Chemistry

    I have this question from an old exam for review. I tried the question but can't get the right answers. An electron in an electronically excited hydrogen atom undergoes a transition from a 6d to a 2p orbital, resulting in the emission of a photon. The

  54. Trigonometry

    How do you simplify: (1/(sin^2x-cos^2x))-(2/cosx-sinx)? I tried factoring and creating a LCD of (sinx+cosx)(sinx cosx) (cosx-sinx), but cannot come up with the right answer. The answer is (1+2sinx+2cosx)/sin^2x+cos^2x,but I don't know how the book arrived

  55. Math

    t:3/4=7/8:15/16=

  56. Algebra

    The height , h, in feet, of a bottle rocket is modeled by: where t is the time in seconds. A. Factor the expression. B. What is the height of the rocket after 2 seconds? C. What is the height of the rocket after 3.75 seconds? Explain the solution.

  57. Math

    Suppose it costs c $260 to purchase us $243.23 .What is exchange rate ?

  58. Math

    Find the perimeter and area. a. (1,4), (4,5), (5,2) b. (0,–2), (0,2), (4,0) c. (0, 0), (2, 0), (4,–3)

  59. Math

    The tire on Frank Bike moves 75 inches in one rotation. how many rotations will the tire have made after Frank rides 50 feet

  60. physics

    the floor of a lorry is 3m high, a plank 5m longis used as an inclined plan to raise some leading the maximum effort required to raise 200N load up the plane

  61. physics

    the floor of a lorry is 3m high, a plank 5m long is used as an inclined plan to raise some leading the maximum effort required to raise 200N load up the plane

  62. Calculus

    two sides of a triangle have lengths 15 m and 20 m. the angle between them is increasing at a rate of pi/90 rad/s. At what rate is the area changing when the angle between the two given sides is pi/3 Can't seem to figure it out!

  63. Geometry

    Write the General form equations for the following circles: 1. A circle with center (1, -6) and radius 4 2. A circle with center (6, 8) and radius 10 3. A circle with center (0, 3) and radius 2√3 4. A circle with center (-0.5, 5.5 ) and radius 8.4 5. A

  64. Physics

    What effect do the following forces have on point? 100N, 30 degrees E of N

  65. Geometry

    An equilateral triangle, ABC, has two of its vertices, A and B, below the x-axis; has the third vertex C above the x-axis, and contains the points (0,0) on segment AC, and (0,1) on segment BC. How long is the path traced out by all possible points C to two

  66. math

    In a particular tour group, 30% of the tourists are men, and there are 20 more women than men. How many tourists altogether are there in the group? Explain your reasoning.

  67. English

    To letter write news editor such children sad plight and up lift

  68. chemistry

    when 1.00kg of copper reacts, 3.12kg of silver is recovered. what is the percentage yield?

  69. chemistry

    The reaction of hydrochloric acid and sodium hydroxide is exothermic HCl +NaOH --> NaCl + H2O In one experiment, a student placed 50.0 mL of 1.00 M HCl at 25.5 oC in a coffee cup calorimeter. To this was added 50.0 mL of 1.00 M NaOH solution, also at 25.5

  70. Math

    Since the opening night, attendance at Play A has increased steadily, while attendance at Play B first rose and then fell. Equations modeling the daily attendance y at each play are shown below, where x is the number of days since the opening night. On

  71. Calculus

    (1,1)(2,1)(2,3) mirror around y-axis & revolve solve with Shell and washer please and thank you

  72. chemistry

    The reaction of hydrochloric acid and sodium hydroxide is exothermic HCl +NaOH --> NaCl + H2O In one experiment, a student placed 50.0 mL of 1.00 M HCl at 25.5 oC in a coffee cup calorimeter. To this was added 50.0 mL of 1.00 M NaOH solution, also at 25.5

  73. Calculus

    (1,1)(2,1)(2,3) mirror Revolve around y-axis. solve with Shell and washer please and thank you! Made a correction for washer would R(x)=2x-1 ? what about r(x)

  74. Physics 11

    A 4.00 kg block is accelerated along a level surface at 3.00 m/s^2. The applied force is 20.0 N. What is the coefficient of friction between the block and the surface?

  75. Physics 11

    A 15 kg block i

  76. chemistry

    why the melting point of iron is greater the that of sodium?

  77. Physics 11

    A 15 kg block is sitting on a level surface. The coefficient of friction between the block and the surface is 0.32. A horizontal force of 25 N is then applied to the block. What is the acceleration of the block while the horizontal force is being applied?

  78. Algebra

    A student scored 81 and 95 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between 85 and 90.

  79. Mats

    Three persons steps off from a pint. Their steps measure 40 cms, 42 cms and 45 cms respectively. At what distance will they be together again if their speeds are same?

  80. English

    What does the child think about his drawing in the poem

  81. physics

    An object with a height of 12cm is placed 4cm in front of a concave mirror whose radius of curvature is 16cm.

  82. math

    find the next number in the following sequence; 3,5,7,11,_ #anyone to help me plz #

  83. geometry

    An equilateral triangle ⌂ABC has two of its vertices below the x-axis, has the third vertex C above the x-axis, and contains the points A=(0,0)and B=(1,0) on its sides. How long is the path traced out by all possible points C, to two decimal places?

  84. Math

    Amira and Malika are counting their school books. Amira has four times 7 less than the number of Malik's books. If Amira has 29 books how many books does Malika have?

  85. Math

    A barber and his apprentice earn $4900 in a week. The barber earns $200 more per day than his apprentice. How much does the apprentice earn in one day?

  86. Math

    A group of 45 people decide to rent a bus for a trip. They divide the cost equally. When five of the people decide not to go on the trip the rest of the people pay $10 more each. How much does the bus cost?

  87. Math

    John walks three times as far as Smith, and Wilson walks twice as far as John.Find the distance that John walks, if the three friends walk 4500m in total.

  88. physics

    Two instances during which the heating effect of current is not required

  89. Math

    I am an even number less than 100.One of my factory is 13.I am made two consecutive digit.What number am I?

  90. Calculus

    S=integral sign S3x(4-x^2)^1/2 use trig substitution I am confused I got x sin(sin^-1(x/2))+cos(sin^-1(x/2))

  91. Geography, life science, maths lit,history

    Research for careers of the above subjects, it happened that i want to be a Doctor, but m not sure about this subjects

  92. English

    1. He is a good deal stronger than Sam. 2. He is lots stronger than Sam. 3. He is far and away stronger than Sam. ............................... Are they all grammatical?

  93. English

    1. He is far the best boy in his class. 2. He is by far the best boy in his class. 3. He is far and away the best boy in his class. ............ Are they all grammatical?

  94. Math

    Nadia and Manar together have 140 walnuts. If Nadia gives fifteen walnuts to Manar then they will each have an equal number of walnuts. How many walnuts does Manar have at the beginning?

  95. Math

    On a salmon farm, pool A contains 310 salmon and a second pool B contains 90 salmon. The number of salmon in pool A is decreasing by 15 salmon per month. The number of salmon in pool B is increasing by 15 salmon per month. After how many months will there

  96. Math

    Smith has $360. He spend 1/9 of his money first, then spends another 2/9 of the original amount. How much money does Smith have left?

  97. Math

    3/5 of the animals on a form are goats and the rest are sheep. Find the number of goats if there are 32 sheep on the farm.