Questions Asked on
October 24, 2011

  1. Math

    The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is incre ased by 3/20. Find the original fraction. Pls include solution and workings thx :)

    asked by Ghiffari
  2. Physics

    You're driving your pickup truck around a curve with a radius of 22meters. A box in the back of the truck is pressed up against the wall of the truck. -How fast must you drive so that the force of the wall on the box equals the weight of the box?

    asked by Noe Valencia
  3. physics

    a small bead can slide without friction on a circular hoop that is in a vertical plane and has a radius of 0.100 m. The hoop rotates at a constant rate of 3.00 rev/s about a vertical diameter. Find the angle beta at which the bead is in vertical

    asked by bob
  4. Chemistry

    In the CO3^2- ion, all three C-O bonds have identical bond lengths of 136 pm. Why?

    asked by Joe Schmo
  5. math

    determine the value of k such that g(x)=3x+k intersects the quadratic function f(x)=2x^2-5x+3 at exactly one point determine the value(s) of k such that the linear function g(x)=4x+k does not intersect the parabola f(x)=-3x^2-x+4

    asked by Melissa
  6. CHEMISTRY PLEASE HELP

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

    asked by Josh
  7. Physics

    Each tire on a car has a radius of 0.330 m and is rotating with an angular speed of 19.5 revolutions/s. Find the linear speed v of the car, assuming that the tires are not slipping against the ground.

    asked by Jasmin
  8. Chemistry please help :)

    A 1.10 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 degrees C and a pressure of 735 mm Hg . The dry ice is allowed to sublime (convert from solid to gas) and the mixture is allowed to return to 25.0 degrees

    asked by Jackie
  9. Calculus

    The point A(-3, -5) is one the terminal arm of an angle feta. Determine the exact expressions for the primary trigonmetric ratios for the angle. Would that be 225 degrees. -2V2?

    asked by -Untamed-
  10. chemistry

    Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 5.00-g sample is burned, and 2.50 g of CO2(g) is produced. What is the mass percentage of the table salt in the mixture

    asked by Sete Odhiambo
  11. chemistry

    What volume of a 6.0 M NaOH solution would you need to prepare 250.0 milliliters of a 3.0 M NaOH solution?

    asked by Brittaney
  12. science

    Listed below are six mixtures. Identify physical properties of the components that allow you to separate them. Then, explain the method you would use to separate the components. Mixture 1: Salt dissolved in water Physical Properties: Density Method of

    asked by Hope
  13. physics

    Three blocks of masses M1=26kg,M2=38kg and M3=41kg are connected by 2 strings over 2 pulleys.Friction is negligible. 1. Determine the magnitude of acceleration and 2. the magnitude of the tension in each of two strings

    asked by rajesh
  14. Physics

    A mortar shell is launched with a velocity of 100m/s at an angle of 30 degree above the horizontal from a point on a cliff 50m above a level plain below. How far from the base of the cliff does the mortar shell strike the ground?

    asked by Mark
  15. English Check

    Online Vs Traditional Dating Thesis : Technology has brought many innovations in human life and one of the greatest is online dating. However, just like Traditional dating, online involves a lot heartbreaks too and both are harmful if done recklessly. In

    asked by HM
  16. physics

    A winch is used to frag a 375 N crate up a ramp at a constant speed of 0.75 m/s by means of a rope that pulls parallel to surface of the ramp. The rope slopes at 33 deg. above the horizontal, and the coefficient of kinetic friction between the ramp and the

    asked by juniper
  17. Psychology

    1. Samantha is suffering from fatigue and sometimes cannot make herself get out of bed in the morning. She feels that the world is a sad, unhappy place and would like to be relieved of her existence. Dr. Powell and Samantha examine her feelings very

    asked by John
  18. organic chemistry

    An ether and an alkene are formed as by-products in this reaction. Draw the structure of these by-products and give mechanism for their formation.

    asked by Ivy
  19. physics

    At the base of a frictionless icy hill that rises at 23.0m above the horizontal, a toboggan has a speed of 12.0m/s toward the hill. How high vertically above the base will it go before stopping?

    asked by Chris
  20. Chemistry

    a) How will the concentration of NaOH be affected if during the titration some of the solid potassium hydrogen phthalate was spilled during the transfer? Will the concentration of the standardized NaOH increase, decrease, or have no effect? b) How will the

    asked by Josh
  21. calculus

    a ball is thrown upward at 96 feet per second from the top of a 100 foot building. 1.when will the ball obtain maximum height 2. when will the ball hit the ground?

    asked by chris
  22. physics

    An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest.

    asked by maria
  23. Calculus

    A rectangle has a diagonal of 8cm. The diagonal creates a 60 degrees angle at the base of the rectangle. Write an exact expression for the base and the height of the rectangle. ^^ Don't get how to do that, Ive only drawn a triangular diagram, and im

    asked by -Untamed-
  24. Word Problem

    A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 212 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?

    asked by Jessica
  25. organic chemistry

    Aqueous sodium bicabonate used to wash the crude n-butyl bromide. a) What was the purpose of this wash? Give equation. b)Why would it be undesirable to waash the crude halide with aqueous sodium hydroxide?

    asked by Ivy
  26. Physics

    Sam, whose mass is 72.0 kg, takes off down a 51.0 m high, 11.0^\circ slope on his jet-powered skis. The skis have a thrust of 180 N. Sam's speed at the bottom is 43.0 {\rm m/s}. What is the coefficient of kinetic friction of his skis on snow?

    asked by Ali
  27. Math

    For what values of k will the functon f(x)=kx^2-4x+k have no zeros Determine the values of k for which the function f(x)=4x^2-3x+2kx+1 have 2 zeros

    asked by Farrah
  28. English Essay

    I am supposed to write a comparison essay for English. Related to Online Vs Traditional Dating. Could you help me make a strong thesis? Technology has brought many innovations in human life and one of the greatest for many is online dating. However just

    asked by HM
  29. chemistry

    If 25 ml of 0.11 M sucrose is added to 10 ml of 0.52 M sucrose, what will be the resulting Molarity?

    asked by Bob
  30. math

    how long will it take $5000 to grow to$8000 if it is invested at 5% compounded quarterly?

    asked by kerry
  31. geography

    Which statements describe cultural influences? Florida is bordered by water on three sides. French is spoken in parts of Louisiana. Forests are cleared to provide space for cattle grazing. Male children are encouraged to attend the university. The longest

    asked by Alyse
  32. Physics

    A)Two identical resistors are connected in parallel across a 30-V battery, which supplies them with a total power of 7.0 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance of the other

    asked by Kristi
  33. CHEMISTRY PLEASE HELP

    Using the data collected for part b on your data sheet, calculate the molar mass of the unknown acid. Include the calculation for each trial and the average. Trial One Results: Mass unknown acid: 0.500g Final buret reading: 18.01mL Initial buret reading:

    asked by Josh
  34. Physics

    An aluminum wire is hung between two towers and has a length of 175 m. A current of 125 A exists in the wire, and the potential difference between the ends of the wire is 0.300 V. The density of aluminum is 2700 kg/m3. Find the mass of the wire

    asked by Mathe
  35. social studies

    what are some non-examples in multiculturalism?

    asked by analee
  36. related rates

    A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.4 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 8 cm. (Note the answer is a positive number).

    asked by james
  37. calculus

    Show that tan^3(x)-8(tan^2(x))+17(tan(x)0-8 = 0 has a root in [0.5, 0.6]. Apply the Bisection Method twice to find an interval of length 0.025 containing this root. I have NO idea where to go with that equals 0 part...I could figure it without it but that

    asked by terra
  38. Chemistry

    What carboxylic acid and alcohol is needed to produce isobutyl propionate?

    asked by Jessica
  39. EssayCHECK

    Online Vs Traditional Dating Innovations and technology has brought about many changes in day to day human life. More recently, and with the advent of the internet, communication amongst people from all over the world has drastically increased to levels

    asked by HM
  40. Chemistry(Please help, thank you!)

    For a chemistry lab the experiment was to carry out an acid-base titration to determine the exact concentration of a sodium hydroxide solution. Two trials were completed and the data collected was: mass of weighing paper, mass of weighing paper + KHP, mass

    asked by Hannah
  41. Trick or Treat

    Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps,

    asked by Linda
  42. College Algebra

    Show all work. A projectile is fired from a cliff 100 ft above the water at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 260 ft/second. The height of the projectile above the water is given by h(x)= ((-32x^2)/(260)^2)+x+100,

    asked by Anonymous
  43. physics help please

    A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in units of m What maximum height does he reach?

    asked by anon
  44. Math

    At the potluck , there were 6 pecan pies, 7 lemon pies, 13 cherry pies, and 8 apple pies. Find the ratio in simplest form. Then explain its meaning.

    asked by Mia
  45. algebra,math

    Use the Pythagorean Theorem to find the missing side of the triangle. Round to the nearest tenth, if necessary. a = ?, b = 5, c = 8 A. 6.0 B. 6.1 C. 6.2 D. 6.3

    asked by tracy
  46. physics

    1. A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed of 1.50 m/s by pulling on the rope tied to the crate with a force of 50 N. The rope makes an angle of 25¡ã with the horizontal. a.What

    asked by annie
  47. Math Garde 3

    How can adding doubles help you to multiply by 2 ? give an example in your explanation

    asked by Hong
  48. Physics

    A crow is flying horizontally with a constant speed of 2.50 m/s when it releases a clam from its beak. The clam lands on the rocky beach 2.20 s later. Consider the moment just before the clam lands. (Neglect air resistance.) A) What is its horizontal

    asked by Dylan
  49. chemistry

    Fe2+ + MnO4- + Fe3+ + Mn2+ which of the elements is undergoing oxidation and which of the elements is the oxidizing agent?

    asked by TROUBLED
  50. physics

    an experimental jetplane just after takeoff climbs with a speed of 500km/hr at an angle of 37 degrees with the horizontal. At what rate is the plane gaining altitude?

    asked by Lily
  51. calc related rates

    A street light is at the top of a 18 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 6 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 45 ft from the base of the pole?

    asked by Bernardo
  52. organic chemistry

    Why does the alkyl halide layer switch from the top layer to the bottom layer at the point where water is used to extract the organic layer?

    asked by Ivy
  53. Physics

    A student, crazed by final exams, uses a force of magnitude 86 N and angle θ = 61° to push a 5.2 kg block across the ceiling of his room, as in Figure 6-52. If the coefficient of kinetic friction between the block and the ceiling is 0.34, what is the

    asked by Ted
  54. physics

    A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in m What maximum height does he reach? Answer in units of m

    asked by anonymous
  55. PHYSICS

    A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the

    asked by Anonymous
  56. geometry

    a piece of rectangular sheet metal is 20 in. wide. It is made into a rain gutter by turning up the edges to form parallel sides. Let x represent the length of each of the parallel side. (a)give the restrictions on x (b)determine a !@#$%^&tion A that gives

    asked by Anonymous
  57. Physics

    An autographed baseball rolls off of a 0.85 m high desk and strikes the floor 0.68 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s

    asked by Jo
  58. physics

    You are riding in a school bus. As the bus rounds a flat curve at constant speed, a lunch box with a mass of 0.470 suspended from the ceiling of the bus by a string of length 1.85 is found to hang at rest relative to the bus when the string makes an angle

    asked by okan
  59. Alegra Beginning

    Rachel earns $6,000 less than twice as much as Tom. If their two incomes total $48,000, how much does each earn?

    asked by Missy
  60. Math

    At the potluck , there were 6 pecan pies, 7 lemon pies, 13 cherry pies, and 8 apple pies. Find the ratio of apple pies to the total number of pies. Write the ratio in simplest form. Then explain its meaning.

    asked by Mia
  61. English

    Thoreau included the following sentence in Walden: "There is some of the same fitness in a man's building his own house that there is in a bird's building its own nest." Which of the following statements rephrases his literal comparison as a metaphor? A. A

    asked by LaH
  62. Physics

    Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

    asked by Brooke
  63. CALCULUS

    At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

    asked by CRYSTAL
  64. organic chemistry

    Why must the alkyl halide product be dried carefully with anhydrous calcium chloride before the distillation?

    asked by Ivy
  65. Mathematics

    There are 2 white marbles in urn A and 4 red marbles in urn B . At each step of the process a marble is selected from each urn and the 2 marbles are interchanged.What is the probability that there 2 red marbles in in urn A after three steps....please give

    asked by Subhadip
  66. Chemistry

    03 + 3I- + H20 --> O2 + I3^- + 2OH- A 1.00-L bulb of air containing O3 produced by an electric spark was treated with 25mL of 2M KI, shaken well, and left closed for 30 minutes so that all O3 would react. The aqueous solution was then drained from the

    asked by Ken
  67. l;k

    Write a program that asks the user to enter the student’s name (first and last), and his/her first exam grade of three students, and then display them in a neat format. After that the program will find the average of the three grades, and print it

    asked by ayham
  68. physics

    An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest.

    asked by fiko
  69. statistics

    The weather forecaster reports that the probability of rain tomorrow is 10%, Which approach was used to arrive at this number?

    asked by Anonymous
  70. Finance

    Niles is making an investment with an expected return of 12 percent. If the standard deviation of the return is 4.5 percent, and if Niles is investing $100,000, then what dollar amount is Niles 90 percent sure that he will have at the end of the year? A)

    asked by James
  71. chemistry

    write the name or formula for a reagent that will dissolve PbCl2 but not Hg2Cl2 and AgCl?

    asked by travis
  72. Physics

    Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.80 x 10^11 m apart. The larger of the two stars has a mass of 3.50 x 10^30 kg, and its center is 3.00 x 10^11 m from the system's center of mass. What is the

    asked by Anne
  73. algebra

    Susie has a budget of $92 to spend on clothes. The shorts she wants to buy are on sale for $14 each. The shirts are on sale for $12 each. If Susie purchases four shorts, what is the maximum number of shirts she can buy to go with the shorts?

    asked by Ali
  74. physics

    A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700 , and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 2600 . The

    asked by erl
  75. Physics

    You are 1.9 m tall and stand 3.3 m from a plane mirror that extends vertically upward from the floor. On the floor 1.6 m in front of the mirror is a small table, 0.75 m high. What is the minimum height the mirror must have for you to be able to see the top

    asked by nikki
  76. Chemistry

    Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH. 2) calculate the mass percent

    asked by Josh
  77. Physics

    A block is pushed across a horizontal surface with a coefficient of kinetic friction of 0.15 by applying a 150 N horizontal force. If the block accelerates at the rate of 2.53 m/s2 (squared), what is the mass of the block?

    asked by Chris
  78. organic chemistry

    what are the formulas of the salts that may precipitate when the reaction mxture is cooled?

    asked by Ivy
  79. physics

    Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit to be circular and 720 km above the surface of the Moon, where the acceleration due to gravity is 0.839 m/s2. The radius of the Moon is

    asked by carlton
  80. Stats

    Classify the following as discrete or continuous random variables. (A) The time it takes to run a marathon (B) The number of fractions between 1 and 2 (C) A pair of dice is rolled, and the sum to appear on the dice is recorded (D) The length of a broad

    asked by Jennifer
  81. Decimal word problem

    Nadia's diet can says she can eat 3.5 ounces of chicken nuggets. The package weighs 10.5 ounces and contains 15 chicken nuggets. How many nuggets can Nadia eat? I've tried this question out, and I divided 10.5 by 3.5? Is that correct?

    asked by Alex L.
  82. physics

    A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the

    asked by Anonymous
  83. Physics

    In Denver, children bring their old jack-o-lanterns to the top of a tower and compete for accuracy in hitting a target on the ground. Suppose that the tower height is h = 9.80 m, and that the bulls-eye is a horizontal distance of d = 3.2 m from the launch

    asked by Dylan
  84. Physics

    A 110 g hockey puck sent sliding over ice is stopped in 14.9 m by the frictional force on it from the ice. (a) If its initial speed is 7.8 m/s, what is the magnitude of the frictional force? (b) What is the coefficient of friction between the puck and the

    asked by Ted
  85. Chemistry

    Sulfite (SO3^2-) in wine was measured by the following procedure: 50.0ml of wine were added 5.00ml of solution containing (0.8043 g KIO3 + 5 g KI)/100ml. Acidification with 1.0ml of 6.0 M H2SO4 quantitatively converted IO3^- into I3^-. I3^- reacted with

    asked by Ken
  86. physics

    While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 225 m east, 160 m at an angle 30.0° north of east, and 150 m south. Find the resultant displacement from the cave entrance.

    asked by marissa
  87. Chemistry

    a.) Assume that you had 100 nuts (N) and 75 bolts (B). How many NB molecules could you make by screwing one nut onto each bolt? b.) How many N2B molecules could you make by screwing two nuts onto each bolt?

    asked by Kay
  88. physics

    At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 830 m/s2 and the vertical or y component of its acceleration is 1100 m/s2. The ball's mass is 0.37 kg. What

    asked by Anonymous
  89. Chemistry

    Using the data collected for part b on your data sheet, calculate the molar mass of the unknown acid. Include the calculation for each trial and the average. Trial One Results: Mass unknown acid: 0.500g Final buret reading: 18.01mL Initial buret reading:

    asked by Josh
  90. Chemistry

    All chromium particles should have the same number of (protons,neutrons or electrons)? I think it is neutrons. Is that correct?

    asked by Anonymous
  91. Physics

    A machine part is made from a uniform solid disk of radius R and mass M. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from the center of the disk to

    asked by mymi
  92. CHEMISTRY PLEASE HELP

    Using the data collected for part c on your data sheet and assuming the density of the vinegar is 1.00g/mL, 1) calculate the molar concentration of acetic acid (CH3COOH) in the vinegar sample using the average volume of NaOH. 2) calculate the mass percent

    asked by Josh
  93. physics

    An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest.

    asked by maria
  94. psychology

    1. psychologists who believe in _____ are most likely to attempt to understand diversity in ethnic background as an influence on behavior: a. individual differences b. free will c. determinism d. universal principles is it "A" 2. Dr. Hall believes that

    asked by John
  95. physics

    A car initially traveling eastward turns north by traveling in a circular path at uniform speed as in the figure below. The length of the arc ABC is 210 m, and the car completes the turn in 38.0 s. (a) What is the acceleration when the car is at B located

    asked by carlton
  96. Math

    you buy 3 books that each cost the same amount and a magazine all for 59.99.You know that the magazine costs 1.99. How much does each book cost?

    asked by rana sh
  97. physics

    A quarterback throws the football to a stationary receiver who is 16 m down the field.The football is thrown at an initial angle of38.5◦to the ground.The acceleration of gravity is 9.81 m/s2.a) At what initial speed must the quarterback throw the ball

    asked by carol
  98. Physics

    A 1000 kg car rolling on a horizontal surface has speed v = 55 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

    asked by Brooke
  99. Physics

    A CD has a mass of 15.0 g, an inner diameter of 1.5 cm, and an outer diameter of 11.9 cm. Suppose you toss it, causing it to spin at a rate of 4.5 revolutions per second. (a) Determine the moment of inertia of the CD, approximating its density as uniform.

    asked by mymi
  100. statistic

    A survey was made of 100 customers in a department store. 70 of the customers indicated they visited the store because of a newspaper advertisement. The remainder had not seen the ad. A total of 40 customers made purchases; of these customers, 30 had seen

    asked by mark
  101. math

    Is it reasonable to say the sum of 146 and 149 is less than 300? Explain.

    asked by sandra
  102. Chemistry

    Calculate the mass of Glauber's salt needed to lower the temp of air in a room by 6.3 C. The mass of air in the room is 555.4 kg, the specific heat is 1.2J/g-c

    asked by Tara
  103. Calculus

    Fine the measure of feta, to nearest degree, where 0 degrees is less or equal to feta, and feta is less or equal to 360 degrees. tan feta + 5 = 0, I tried working this out and I got -78.6:\

    asked by -Untamed-
  104. calculus

    an open topped cylingrical pot is to have a volume of 125 cm^3. determine the minimal possible amount of material used in making this pot.( neglect the thickness of the material as well as possible waste)

    asked by mike
  105. statistics

    government data assign a single case or each death that occurs in the u.s. the data show that the probability is 0.45 that a randomly chosen death was due to cardiovascular disease, and 0.22 that i was due to cancer. Suppose a docote checked the cause of

    asked by josh
  106. Math

    A swimming pool is 16 meters wide and 25 meters long. At $50 per square meter. how much will a child-proof covering for the pool cost?

    asked by Ivy
  107. Physics

    A pilot is performing vertical loop the loop over the ocean at noon . The plane speeds up as it approaches the bottom of the circular loop and slows as it approaches the top of the loop. An observer in helicopter is watching the shadow of the plane on the

    asked by Yashib
  108. Physics

    A golfer is enjoying a day out on the links. What maximum height will a 345m drive reach if it is launched at an angle of 21 degrees to the ground? the acceleration due to gravity is 9.81m/s^2

    asked by Truong
  109. physics

    we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?

    asked by Jenna
  110. CALCULUS help please

    The radius of a right circular cylinder is given by t + 9 and its height is (1/9)*(t^0.5) where t is time in seconds and the dimensions are in inches. Find the rate of change of the volume with respect to time. units = in^3/s

    asked by Karishma
  111. physics

    A transport plane takes off from a level landing field with two gliders in tow, one behind the other. The mass of each glider is 700n , and the total resistance (air drag plus friction with the runway) on each may be assumed constant and equal to 2600n .

    asked by erl
  112. Physics

    When only the front wheels of an automobile are on a platform scale, the scale balances at 7.9 kN; when only the rear wheels are on the scale, it balances at 6.2 kN. What is the weight of the automobile? How far is its center of mass behind the front axle?

    asked by mymi
  113. Math

    The length and width of a rectangle are (x+4)cm and xcm respectively. Write down expressions for: A. The perimeter of the rectangle B. The length of the side of a square with the same perimeter If the sum of the areas of the square and the rectangle is

    asked by Ghiffari
  114. Math

    What is the answer to A basket with 12 apples has a mass of 3,105 grams. The same basket with 7 apples has a jhaad of 1980 grand each apple has the same mad what is the mess of the baskets?

    asked by Anonymous
  115. geometry

    given line segment PQ , PQ=3QR, and QR= 1/3 RS Prove: line segment PQ is congruent to line segment RS

    asked by Emily
  116. Chemistry

    What caroxylic acid and alcohol is needed to produce isopentyl propionate?

    asked by Jessica
  117. Chemistry

    I really don't get pH curves. I have to sketch a pH curve for the titration of 40.00 mL of 0.100 M hydrazine, H2NNH2(aq) having a Kb of 3.0x10^-6 by 0.100M HCIO4(aq). I know you can't sketch on here. But can you help me find the first point? I know its a

    asked by Anonymous
  118. physics

    A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t =

    asked by maria
  119. Chemistry

    What caroxylic acid and alcohol is needed to produce isopentyl propionate?

    asked by Jessica
  120. Chemistry

    NH4NO3 (aq) + (heat) --> 2 H20 (l) + N2 (g) Calculate the mass in grams of ammonium nitrate that must be used to produce 1.50 L of nitrogen gas collected over water at 30°C and 748 torr. At 30°C, PH20 = 31.8 mmHg. Find the moles of nitrogen gas.

    asked by Anonymous
  121. physics

    A stone is thrown horizontally at a speed of 4.8 m/s from the top of a cliff 88.5 m high. How long does it take the stone to reach the bottom of the cliff?

    asked by Anonymous
  122. physics

    A wire of uniform linear mass density hangs from the ceiling. It takes 0.82 s for a wave pulse to travel the length of the wire. How long is the wire?

    asked by fiko
  123. math

    0.81 divide by 9 is what? is it.9?

    asked by chase
  124. physics

    A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t =

    asked by maria
  125. calculus

    using the intermediate value theorum, prove that arctanx = arccosx has a solution. i've gotten that the domain of arctanx is -pi/2 to pi/2 but i'm not sure where to go from here...can i move the arccosx to the left? when i do that, i can't figure f(pi/2)

    asked by terra
  126. statistics

    The profit for a new product is given by Z = 2X - 2Y - 7. We know that X and Y are independent random variables with Var(X) = 2 and Var(Y) = 2.7. What is the variance of Z?

    asked by Dani
  127. Chemistry

    How much by mass of Urea (NH2)2CO is required for a 32.5% solution in one litre of water.

    asked by Bill
  128. Accounting

    Could someone please look this over and tell me if I have this correct? I am not confident in the Trial Balance.  May 1 Cash 101 25,000 Common Stock 311 25,000 3 Supplies 126 2,500 Accounts Payable 201 2,500 7 Rent Expense 729 900 Cash 101 900 11 Accounts

    asked by Student of Accounting
  129. Ratios

    Write this ratio as a fraction in lowest terms. (3 cups to 3 pints) Since 2 cups are equal to 1 pint, I conclude that there are 3 and a half cups.

    asked by Alex L.
  130. Physics

    A ballistic pendulum consists of an arm of mass M and length L = 0.52 m. One end of the arm is pivoted so that the arm rotates freely in a vertical plane. Initially, the arm is motionless and hangs vertically from the pivot point. A projectile of the same

    asked by mymi
  131. Holidays

    Can u give me some very good websites for making homemade presents for teenage girls (for christmas). Please. Like i want very cool gifts only homemade because me and my friends don't really buy anything for each we like making each other homemade gifts.

    asked by Laruen
  132. Chemistry

    How many moles of H2 will be produced if 0.500g of Mg is reacted with 10.00mL of 2.0M HCl? Also, provide a balanced equation.

    asked by Kay
  133. Physics

    During a picnic, you and two of your friends decide to have a three-way tug-of-war, with three ropes in the middle tied into a knot. Roberta pulls to the west with 412 N of force; Michael pulls to the south with 580 N. In what direction and with what

    asked by mymi
  134. history ( is this considered a good answer?

    Identify the marshall plan (locate it historically) and explain its historical significans. Marshall Plan(June 1947 to 1952) Rebuild Europe Stabilize democracies and US allies Try to split Eastern European countries from the Soviet Union

    asked by Anonymous
  135. 5th Grade Math

    Use the terms factor, divisor,multiple, product and divisible by to write as many statements as you can about the number sentence below. 7*9=63

    asked by Jonathan
  136. Precalc

    What is the upper and lower bound of sin x+2

    asked by Max
  137. statistics

    IQ scores are normally distributed and assume that the average IQ for all Economics majors is 108 with a standard deviation of 11. What percentage of Economics majors would have an IQ of more than 118?

    asked by Emily
  138. Physics

    a 10 foot long teeter-totter pivots in the middle. a 50 lb boy sits on one end. Where must a 100 lb boy sit to balance the beam?

    asked by Clay
  139. College Chemistry

    a sample bulb contained 0.712g of H2(g) at a certain temperature and pressure. At the same temperature and pressure, the bulb can hold 13.0g of an unknown gas. What is the molar mass of the unknown gas?

    asked by Anonymous
  140. Physics

    Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.80 1011 m apart. The larger of the two stars has a mass of 3.50 1030 kg, and its center is 3.00 1011 m from the system's center of mass. What is the mass of

    asked by Anne
  141. math

    A company manufactures calulatoirs in batches of 64 and ther is a 5% rate of defects. Find the standard deviation for the number of defects per batch

    asked by Tami
  142. calculus

    f(x) = ln x, [1, 6] If it satisfies the hypotheses, find all numbers c that satisfy the conclusion of the Mean Value Theorem. (Enter your answers as a comma-separated list. If it does not satisfy the hypotheses, enter DNE).

    asked by John
  143. Math

    Please help me solve this problem 7.53x10exponent negative 3

    asked by Sadie
  144. pre-cal

    Find B so that F(x)=-x^2+bx-75 has a maximum value of 25.

    asked by tracy
  145. physics

    we know that the speed of light in a vacuum is 3.0 x 10^8 m/s (18,000 mi/sec). If light travels through thick plastic with a speed of 1.75 x 10^8 m/s, what is the index of refraction through plastic?

    asked by Jenna
  146. general science

    A Graph Shows Distance On The Vertical Axis And Time On The Horizontal Axis. If The Speed Is Steadily Increasing, What Will The Line Representing Speed Look Like On The Graph?

    asked by Anonymous
  147. English

    1. If you are a bird, be an early bird And catch the worm for your breakfast plate. 2. If you're an early bird, you will catch the worm for your breakfast plate. (Does #1 mean #2 in meaning? a litle different?) 3. Be strong, and be healthy. 4. If you are

    asked by rfvv
  148. algebra

    What is the equation for the axis of symmetry in the function? y = -2x^2 + 5x - 4

    asked by tracy
  149. Chemistry

    The mass of a sample of a liquid compound was found to be 0.534 g after the compound was vaporized in a containter placed in a boiling water bath at 100°C at 748 torr. The volume of the container was 286mL. Calculate the molecular mass of the compound.

    asked by Anonymous
  150. Calculus

    Find the exact values of the following. cos 270 degrees = 90 degrees, value = 0. Sin 180 degrees = 180-90 = 90 = 1, but its supposed to be zero, don't know how to get that:\ Confused with tan 240 degrees as well.

    asked by -Untamed-
  151. Chemistry

    What carboxylic acid and alcohol is needed to produce propyl acetate?

    asked by Jessica
  152. math

    Mary and four of her friends earn a total of $152 doing odd jobs this weekend. The girls decide to treat themselves to lunch, and then donate the remainder of the money to a disaster relief fund. Write and solve an algebraic equation to determine the total

    asked by taylor
  153. pre calc

    What is the vertical and horizontal asymptotes of .. 3x _________ x^2-3x-10

    asked by Max
  154. algebra

    The stem-and-leaf plot represents the average monthly high temperatures in Tampa, Florida. What is the third quartile (Q3) of the temperatures? stem 6 leaf 9, stem 7 leaves 1 2 6 7, stem 8 leaves 1 4 7 9 9, stem 9 leaves 0 0 A. 85 B. 87 C. 88

    asked by tracy
  155. physics

    A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?

    asked by Anonymous
  156. physics

    An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest.

    asked by maria
  157. Physics

    A 1-kg thin hoop with a 50-cm radius rolls down a 47° slope without slipping. If the hoop starts from rest at the top of the slope, what is its translational velocity after it rolls 16 m along the slope? I got the height by 16sin47=11.7 m I tried putting

    asked by mymi
  158. math

    A horse gallops a distance of 10 kilometers in a time of 30 minutes. What is its average speed?

    asked by Chandler
  159. Chemistry 12

    I really don't get pH curves. I have to sketch a pH curve for the titration of 40.00 mL of 0.100 M hydrazine, H2NNH2(aq) having a Kb of 3.0x10^-6 by 0.100M HCIO4(aq). I know you can't sketch on here. But can you help me find the first point? I know its a

    asked by Anonymous
  160. physics

    A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?

    asked by Anonymous
  161. calculus

    How do you find the ariea between these curves? y=4x^2 y=7x^2 4x+y=3 x>=0?

    asked by johnathon
  162. MATH(please check)

    A newspaper has 80 pages. If 20 of the 80 pages are devoted to advertising. What percent of the newspaper consists of advertising? How do u start this?

    asked by FITTY
  163. Physics

    A 862-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 30.0 m/s. What is the average force exerted on the car during this time?

    asked by Anonymous
  164. chemistry

    given: V1=410 ml, T1=27 degrees celsius, P1= 740mm. what is the V2 in ml at STP?

    asked by Addie Mae
  165. Calculus

    Determine the measure of A if 0 degrees is less or equal to angle A and if angle A is less or equal to 360 degrees. Tan A = 0 Answer is somehow supposed to be 0 degrees, 180 degrees, and 360 degrees, but don't know how to get the answer, just really

    asked by -Untamed-
  166. accounting

    Company reports net income of $ 530,000 for the year ended December 31, 2009. It also reports $ 95,400 depreciation expense and a $ 4,000 gain on the sale of machinery. Its comparative balance sheets reveal a $ 42,400 increase in accounts receivable,

    asked by Renee
  167. Grammar

    Is this a complex sentence? In most countries, people call the game of soccer football.

    asked by Kam
  168. Algebra

    Could someone please show me how to write this equation in standard form? x^2 + y^2 - 6x+8y+9=0

    asked by JessieLynne
  169. Stats

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 14 patients using the drug is selected. Find the probability that: (A) exactly two will have this mild side effect (B) at least

    asked by Jennifer
  170. Physics

    Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.80 1011 m apart. The larger of the two stars has a mass of 3.50 1030 kg, and its center is 3.00 1011 m from the system's center of mass. What is the mass of

    asked by Anne
  171. pre-calculus

    Let f(x)=x^2+bx+27. Find the value(s) of b so that f(x) has minimum value of 2.

    asked by Mike
  172. math

    To save for a child's education,the petersen's deposited $2500 into an account that pays 6% annual interest compounded daily. Find the amount of interest earned on this account over a 20-year period.

    asked by Cliff
  173. College Algrebra

    How would you use synthetic division to find the quotient and remainder for this problem: (X^3+3ix^2-4ix-2)/(x+i)

    asked by Anonymous
  174. geometry

    triangular pyramid with base vertices C, A, E and B, D, and F How many planes are shown in the figure?

    asked by alex
  175. math

    two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?

    asked by jane
  176. math

    an end-of -the season sale for winter clothes advertise 30%-45% off the orginal peice. what was the highest original price of a jersey that is now on sale for $12.99. Give your answer as a deciaml rounded to the hundreths place.

    asked by unknown
  177. math

    Mr.Hash bough some plates at a a yard sale. After arriving home he found that 2/3 of the plates were chipped, 1/2 were cracked, 1/4 were both chipped and cracked. Only 2 plates were w/o chips or cracks. How many plates did he buy in all?

    asked by unknown
  178. Shelly

    I really don't get pH curves. I have to sketch a pH curve for the titration of 40.00 mL of 0.100 M hydrazine, H2NNH2(aq) having a Kb of 3.0x10^-6 by 0.100M HCIO4(aq). I know you can't sketch on here. But can you help me find the first point? I know its a

    asked by Anonymous
  179. math

    What is the LCM AND GCF OF 369 AND 3075

    asked by Donald
  180. persoanal finances

    What are the three steps of critical thinking? What do they include? How might mastery of these skills make you a more effective college student and adult learner?

    asked by Anonymous
  181. latin

    what latin word is the phrase strong distaste derived rom

    asked by adrian
  182. CJS/240

    Complete the Uniform Crime Report (UCR) and Self-Report Data Matrix in Appendix B. Complete the matrix, by listing two pros and two cons on the use of UCR data and two pros and two cons on the use of self-report data. Locate two web resources—one

    asked by Heather
  183. mATH

    pi x 3.41 x 1,3019234 divided by 12347 x 8 + 12 - 1804351 x 235-135425 squaredx 10 to the fifth power + 1- 12438723562956918723847.

    asked by Tahmid
  184. Physics

    A 1-kg thin hoop with a 50-cm radius rolls down a 47° slope without slipping. If the hoop starts from rest at the top of the slope, what is its translational velocity after it rolls 16 m along the slope?

    asked by mymi
  185. Calculus

    P (-V3/2, -1/2 and Q(1/2, V3/2 are two points on the unit circle. If an object rotates counterclockwise from point P to point Q, what angle has it rotated? 180 + 60 = 330 P 60 Q I got like 300, but its supposed to be 210 degrees:\

    asked by -Untamed-
  186. Chemistry

    1. Regarding solutions and solids, which statement is true? A. If the solvent is water, the crystal lattice energy of a solid is absorbed. B. Hydration energy is related to the attractions between solute particles. (My Answer) C. If the solvent is water,

    asked by Anonymous
  187. stat

    The life (in hours) of a computer processing unit (CPU) is modeled as a weibull random variable with β=3 and α=901 hours. What is the probability that the CPU fails before 458 hours?

    asked by eliseo
  188. algerbra

    how do u factor 25a^2 - 30a + 9

    asked by Anonymous
  189. statistic

    Wendy is a randomly chosen member of a large female population, in which 13% are pregnant. Wendy tests positive in a pregnancy test. Pregnancy test correctly identifies pregnancy 91% of the time and correctly identifies non pregnancy 95% of the time. What

    asked by mark
  190. physics

    The rear window in a car is approximately a rectangle, 1.1 m wide and 0.30 m high. The inside rearview mirror is 0.45 m from the driver's eyes, and 1.45m from the rear window. Part A What is the minimum length for the rearview mirror if the driver is to be

    asked by nikki
  191. chemistry

    what mass of potassium chloride is required to prepare 5.00L of a 2.00M solution of KCL

    asked by TROUBLED
  192. physics

    How far (in meters) must a 800 kg pile driver fall, if it is to do 18000 J of work?

    asked by danielle
  193. math boxes 3.3

    make up a set of at least twelve numbers that hav the following landmarks maximum:8 range:6 mode:6 median:5

    asked by brittney
  194. Math-please help!!!

    how do you solve 2x^2+x^3=96?

    asked by Hina
  195. statistics

    Suppose the amount of time it takes for statistics students to complete their midterm is normally distributed with a mean of 85.70 minutes and a standard deviation of 22.55 minutes. If 10 students are randomly selected, what is the probability that they

    asked by Emily
  196. chemistry

    What is the ion in the resulting solution? 100.0 mL of 0.015 M K2CO3 and 100.0 mL of 0.0075 M BaBr2? 25 mL of 0.57 M Ni(NO3)2 and 100.0 mL of 0.150 M NaOH

    asked by dude
  197. physics

    Two objects with masses 5.50 and 3.00 hang 0.500 above the floor from the ends of a cord 5.70 long passing over a frictionless pulley. Both objects start from rest. Find the maximum height reached by the 3.00 object

    asked by okan
  198. Grammar

    Select the correctly punctuated sentence. 1.A) Dr. Jones is an excellent surgeon but does not have a good bedside manner. B) Dr. Jones is an excellent surgeon, but does not have a good bedside manner. C) Dr. Jones, is an excellent surgeon, but does not

    asked by Cindy
  199. algebra

    Joel has 2 gallons of water. He drinks gallon per day. How long will the water last? Express your answer in simplest form.

    asked by Anonymous
  200. tenth grade science

    What can you conclude about the effect of the thermal expansion of water on sea level?

    asked by margaret
  201. Statistics

    Consider a population with µ=73.6 and 0 = 5.38 (A) Calculate the z-score for x =72.7 from a sample of size 45. (B) Could this z-score be used in calculating probabilities using Table 3 in Appendix B of the text? Why or why not?

    asked by jane
  202. Chemistry

    In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second

    asked by Brandon
  203. algebra,math

    what is the vertex for the function? y= x^2 - 4x -3

    asked by tracy
  204. 4th grade Social Studies

    What are the steps of the water cycle

    asked by Maria
  205. Grade 9 Greatest Common Factor Algebra

    Joey is having a party during the Major League Soccer championship game. In order to make sure his guests are happy, he ordered the following appetizers from a nearby restaurant. 15 egg rolls 3 10-slice pizzas 120 chicken wings 30 cheese sticks 5. What is

    asked by Jab
  206. word problem help algebra

    1) For a walkathon a sponsor commmited to give you a flat ffe of $5 plus $2 for every mile you walk. Write an expression for the total amount you will collect from your sponsor at the enf of the walkathon. Then evaluate your =expression for 20 miles

    asked by marko
  207. reading

    what are examples of verbs to desribe the word babysitter?

    asked by Dacia
  208. Interview question - Why do you want to work here?

    I want to be able to expand my horizons and gain experience that I hope will be able to help me later in my professional career. I enjoy bringing people happiness through satisfaction. This is not only a fine opportunity, but this company is a place where

    asked by Anonymous
  209. algebra,math

    Solve the equation. 4 times the square root of x minus 5 minus 8 = 12

    asked by tracy
  210. MATH

    subtracting fractions::: 8 1 - 10 - 2 5 - 6 my answer: 5 4 - 15

    asked by Baily
  211. Physics

    A 120 kg car is travelling at a velocity of 20m/s East when its brakes are locked. Assuming a force of friction of 2500 N, what is the velocity of the car after 0.50s.

    asked by ary
  212. Repost Algebra

    What would it cost for ingredients , per cookie, to make 100 cookies? C=100/4x-28 is the equation given to find the cost. (Cost is equal to 100 over 4x minus 28)

    asked by Shannon
  213. physics please helpp

    A sinusoidal wave on a string is described by the equation y = (0.169 m) sin (0.713 x - 41.9 t), where x and y are in meters and t is in seconds. If the linear mass density of the string is 10.1 g/m ... a) ... the phase of the wave at x = 2.27 cm and t =

    asked by maria
  214. Physics

    A 3.01 kg block slides down a frictionless plane inclined 18.6° to the horizontal. If the length of the plane's surface is 1.47 m, how much work is done, and by what force?

    asked by Yuki
  215. ap world history

    3.Differentiate between the Paleolithic and Neolithic eras. 4. Describe the agricultural transition. 5. Give examples that illustrate the difference between independent origin and cultural diffusion. IM STUCK ON THESE I DID ALL THE REST!!! HELP ASAP????!

    asked by tj
  216. Psychology

    1. Often called the "father of modern psychology." William Wundt painstakingly examined the small pieces of behavior. He was not interested in personality mental disorders. He did study the cognitive elements of: a. thinking, perception, and consciousness

    asked by John
  217. Math

    how do you solve 2x^2+x^3=96?

    asked by Hina
  218. math modeling

    An investment is made at an annual rate of 9.71% compounded monthly, determine the number of months required for your investment to double.

    asked by math
  219. Calculus

    How do you solve the integral from 0 to 1 of x arctan x dx?

    asked by Erica
  220. Calculus

    A ladder 8 meters long is leaning against a wall. If the top of the ladder is slipping down at the rate of 8 meters per second, how fast is the bottom moving away from the wall when it is 7 meters from the wall? Please give your answer in , enter it

    asked by TraiShaun
  221. Stats

    A bag of colored blocks contains the following assortment of colors: red (18), blue (14), orange (20), purple (14), green (10), and yellow (4). Construct the probability distribution for x. I'm so lost....

    asked by Jennifer
  222. algebra worD PROBLEM

    1) For a walkathon a sponsor commmited to give you a flat ffe of $5 plus $2 for every mile you walk. Write an expression for the total amount you will collect from your sponsor at the enf of the walkathon. Then evaluate your =expression for 20 miles

    asked by marko
  223. math

    Suppose that you were saving money over 5 years to use in a purchase later. You have $1000 to put in the savings. After surveying several banks for savings plans, you found these options. "A" stands for the amount you will have in the bank after x years. *

    asked by tracy
  224. owning

    The _______ is the contract that seals the deal when you buy a car. A.loan application B.warranty C.loan agreement D.sales agreement i got C

    asked by Ciara
  225. science

    How does the Kinetic Theroy of Heat explan Solids, Liquids, and gasses?

    asked by Anna
  226. Math

    A parking lot is 60 meters wide and 80 meters long. At $ 15 per square meter, how much will it cost to pave the parking lot?

    asked by Ivy
  227. math

    how can i estimate in the first step of solving a division problem

    asked by Bailey
  228. math

    two cars leave the same point at noon. one car travels north and the other car travels east. suppose the northbound car is traveling 40mph, and after two hours, the two car are 100 miles apart.how fast is the other car going?

    asked by jane
  229. physics

    An object is located 87.6 cm from a concave mirror that has a focal length of 17.0 cm. Where is the image located?

    asked by Jenna
  230. geomatry

    a sequence begins -4,1,6,11 find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of reasoning inductive or deductive, do you use when solving this problem?

    asked by manal
  231. algebra

    Use the Pythagorean Theorem to determine if the three numbers could be the measures of the sides of a right triangle. Assume that the largest is the hypotenuse. 20, 6, 21 A. yes B. no

    asked by tracy
  232. 4thgrade homework help

    Write two addends with a Sumer of 258? Please help! Thanks

    asked by Zack
  233. mgt/230

    Ok need help not getting this I'm to descrbe the organizational structure of you selected organization i chose burger king, then Im supposed to compare and contrast that structure with two different organizational structures? I m not sure what to do.

    asked by ann
  234. computers

    You have been hired by your local library to help it set up a LAN to connect its three library sites. The director of the library, Robert Jienwerski, has a good understanding of the jargon used by network installers and administrators. Robert is very

    asked by Anonymous
  235. physics

    Mr and Mrs Gold are carrying a 58 kg gold shipment on a 4 m long 13 kg board as shown. Find the force in newtons exerted by each to carry the shipment.

    asked by Anonymous
  236. Biology, Art

    I was doing some research for a wildlife art contest in January and I can't seem to find a specific bit of information that is crucial to my painting. The contest requires me to paint a Greater Short Horned Lizard (Phrynosoma hernandesi) and I know that

    asked by Harley
  237. Algebra

    1a. What would it cost for ingredients , per cookie, to make 100 cookies? C=100/4x-28 is the equation given to find the cost.

    asked by Anonymous
  238. geometry

    find the volume of the right prism whose base is a right triangle with legs 3 ft and 4 ft and with a height (altitude) of theprism being 8 ft

    asked by clarence
  239. algebra,math

    What is the axis of symmetry for the function? y = x^2 + 3x - 4

    asked by tracy
  240. Calculus

    Determine two angels between 0 degrees and 360 degrees that have a sine ratio of -1/2. Would that be 30 and 330?

    asked by -Untamed-
  241. physics

    A 16m long ladder is mounted on a fire truck. The ladder itself has mass 130kg , and at the top is a 32kg basket holding a 83kg firefighter. If the ladder makes a 60 degrees angle with the horizontal, what's the magnitude of the net torque about the

    asked by Aleena
  242. MATH

    LAST YEAR, A TICKET TO A MOVIE COST $7.50. THIS YEAR, THE PRICE INCREASED TO $9.00. BY WHAT PERECT IS THE PRICE INCREASE

    asked by katerrian
  243. c++ program

    how can a modfiy this source code to a menu. #include #include #include main() { char cYesNo = '\0'; int iResp1 = 0; int iResp2 = 0; int iResp3 = 0; int iElaspedTime = 0; int iCurrentTime = 0; int iRandomNum = 0; int i1 = 0; int i2 = 0; int i3 = 0; int

    asked by kasey
  244. instrument

    HOW TO MAKE THE MUSICAL INSTRUMANT IN THE CLASSROOM

    asked by mayada
  245. statistic

    In order to attract customers, an ice cream company has started a STAR game. Any person who collects four stars gets a free family size bucket of ice cream. Suppose that the probability of an ice cream pack contains a star is 0.3 (an ice cream pack cannot

    asked by anrt
  246. Calculus

    In triangle PQR, angle P is 20 degres, angle R is 150 degrees, and QR is 6, the length of PQ is...?

    asked by -Untamed-
  247. Grammar

    Which best describes this sentence? Since many countries have football teams, there is much competition leading to the World Cup. Compound, complex, simple or comma splice.

    asked by Kam
  248. Math

    Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps,

    asked by Linda
  249. algebra

    Does this set of data have any outliers? Data: 1, 2, 2, 4, 6, 6, 7, 8, 9, 10, 12, 13, 16, 16, 18

    asked by tracy
  250. pre aljabra

    how do you find the greatest common factor of 44,47

    asked by lucy
  251. algebra

    The volume of a pyramid with a rectangular base is V= 1/3 x LWH Find W if V = 500, L = 15, and H = 4.

    asked by joe
  252. chemistry

    Now take another 35 mL of the 0.50 M pH 6.59 buffer and add 1.5 mL of 1.00 M NaOH. Using steps similar to those above, calculate the new pH of the solution. find pH

    asked by Taylor
  253. Biology

    Locate a diagram of an organism with the main organs and structures labeled. Locate a diagram of an organism with the main organs and structures labeled. Briefly explain how the organism in the diagram has evolved physiologically to become suited to its

    asked by Max
  254. chemistry

    How many milliliters of a solution of 0.0013 M EDTA4- would be used to titrate the lead in 1000. mL of a 0.0073 M solution of Pb(NO3)2? I'm sry, but I keep getting 5200ml and I know that's just wrong! >< can someone please help me?

    asked by Miss
  255. Calc

    Find the integral from -∞ to -1 of 1/(1+x²) dx. I started working the problem out, and so far I got the lim as z→-∞ of [arctan (-1) - arctan (z)]. I'm a little bit confused exactly what is means when you plug -∞ into z, and how to solve the

    asked by Erica
  256. math

    The first and seventh terms of a sequence are both 8. Starting with the third term, each term is the sum of the two previous terms. What is the fifth term?

    asked by Anonymous
  257. Stats

    How many green elements are required to make this a legitimate probability distribution if there are a total of 50 elements in this sample? x red blue orange brown green P(x) 0.20 0.16 0.28 0.24 Would it be 0.11??

    asked by Jennifer
  258. Physics

    An isolated segment of wire of length L=4.50 m carries a current of magnitude i=35.0 A at an angle theta=50.3 degrees with respect to a constant magnetic field with magnitude B= 6.70E-2 T. What is the magnitude of the magnetic force on the wire? a) 2.66 N

    asked by Jessica
  259. MATH

    Marth's mother is 5 times as old as Marta Marth'smother is 25 years old 1. How old is Matra? 2.In 5 years Marta's mother will be 3 times as old as Marta.How old will Marta be then?

    asked by maryam
  260. 4 grade math

    complete the following problem 4+8+7/3*72

    asked by Maria
  261. Math-PLEASE. HELP.

    Given that y varies directly with x, write a direct variation equation that relates x and y. x=1/3

    asked by Izzy
  262. algebra,math

    Solve the equation. Check both solutions and only write the real solution. the square root of 6m minus 5 = m A. {1} B. {5} C. {1, 5} D. no real solution I think its B

    asked by tracy
  263. mathssss

    Use only four 4's along with any mathematical operators to make a total of 2348.

    asked by kindy help me..
  264. physics

    In a roller coaster ride cars and passengers slide down an incline of 36 degrees to horizontal if the friction is negligible find magnitude of acceleration

    asked by rajesh
  265. Decimal problem #2

    The glass mirror of the Hubble telescope had to be repaired in space because it would not focus properly. The problem was that the mirror's outer edge had a thickness of 0.6248 cm when it was supposed to be 0.625 cm. Was the edge too thick or thin? By how

    asked by Alex L.
  266. physics

    Hayes fires a projectile from his air gun. The gun provides a constant 300 N of force on a 0.1 kg projectile as it travels through the 0.3 meter barrel. How fast is it going when it leaves? It starts from rest and there is no friction.

    asked by JJ
  267. math

    if my ones digit is 5 more then the tens digit, i am greater than 25 and less than 35. what number am i?

    asked by Anonymous
  268. MATH

    HOw to do this 5 is what percent of 15? in a proportiono

    asked by FITTY
  269. Science

    In the reaction X+Y (R) Z, Z is the A)Substrate B)Product C)Enzyme D)Carbon Molecule

    asked by Jon
  270. science

    how to make the musical instruments in the classroom

    asked by mayada
  271. algebra

    Which coefficient in the function tells us that the parabola for the function will point downward? y = -2x^2 + 5x - 4

    asked by tracy
  272. math

    THE NUMBER OF MILES SARAH WALKED ON A DAILY BASIS IS 2.5 MILES. THREE MONTHS LATER,SARAH IS WALKING 6 MILES EACH DAY. WHAT IS THE PERCENT INCREASE

    asked by katerrian
  273. algebra

    What is the axis of symmetry for the function? y = x^2 + 3x - 4 A. y = -2 B. y = -1.5 C. x = -2 D. x = -1.5

    asked by tracy
  274. Chemistry

    In a certain experiment, when light of wavelength 570 nm is directed on to the photocell, electrons are emitted at the rate of 6.6 10-13 Coulombs/sec. Assume that each photon that impinges on the photocell emits one electron. How many photons per second

    asked by Brandon
  275. AP GLOBAL

    Explain the basic features of Dravidian and Aryan religious structures which became the basis of Hinduism. I jest need some more to add on to what I already have. Thanks. Dravidian (Harappan) religion had strong beliefs about fertility. Harappan worshipped

    asked by MR. BILL
  276. algebra

    The vertex of y = 9 - 8x - x^2 is (-4, 25) True False

    asked by tracy
  277. math

    john had 15 dollars more than half of what jack had. john had 86 dollars. how much did jack have?

    asked by jake
  278. Physics

    If it takes 470 J of work to stretch a spring 7.4 cm, what is the spring constant?

    asked by Yuki
  279. Science

    If someone could check my answer: Dynamic lows are accentuated due to the fact that they rotate in the same direction as the Earth's surface (Cyclonic flow). This is called-----CORIOLIS EFFECT....Thanks

    asked by Sue
  280. alg 2

    X-4z=13 5x-4y+z=-7 -5x-5y+2z=22

    asked by boss
  281. calculus

    a splenical ballon is being inflated @ 10 cubic inches per secound. how fast is the radius of the ballon increasing when the surface area of the ballon is 2 pi square inches( answer to 4 decimal places)?

    asked by john
  282. algebra,math

    The parabola for the function will point in which direction? y = x^2 + 3x - 4 A. Upward B. Downward

    asked by tracy
  283. MATH

    GRAIG CHANGED JOBS FROM ONE PAYING $8 PER HOUR TO ONE PAYING 11.75 PER HOUR. WHICH IS THE BEST ESTIMATE OF THE PERCENT INCREASE IN HIS SALARY

    asked by katerrian
  284. calculus

    If y = f(x) = x^(p/q) then y^p = x^p show through implicit differentiation that d/dx[x^(p/q)] = (p/q)x^[p/q] Not sure how to tackle this problem.

    asked by Daniel
  285. Art

    My teacher asked me to do writting about expression in art? IM STUCK

    asked by ubaidullah
  286. computers

    example of printers and other hardwar

    asked by hala
  287. Biology/math?

    If ‘pi’ is approximately 3.14, and your field of view is 3 mm in diameter, what is the area of your field of view?

    asked by Jill
  288. Andasol

    Does the expression d-12 have a grater value when d=42 or when d=46

    asked by Jessica N.
  289. grammar

    Thank you for your help. I have 2 more questions. Which is an independent clause? when I saw her across the street I waved frantically to get her attention because I wanted to tell her something I think is is I waved frantically. Next is which is a

    asked by Kam
  290. Phyisical science

    How much energy is in a soccer ball that is moving at 3 m/s and has a mass of 2kg.

    asked by Anna
  291. Algebra

    i^20

    asked by MiNdy
  292. Russian

    russian farmland has been damaged by

    asked by will
  293. Spanish

    Can someone help translate this proverb to English? -------- La casa de huérfanos de Lima fue fundada en 1597 por Luis Ojeda el Pecador, bajo la advocación de Nuestra Señora de Atocha. Lo que movió al caritativo varón a ocuparse de los expósitos fue

    asked by Andrew
  294. MATH

    what is the value of y if x=-1 in a constant function? is it 1 or -1?

    asked by Mark J
  295. math

    one box holds 16 crayons. ANOTHER BOX HOLDS 24 CRAYONS. wRITE A SENTENCES USING WOLDS THAT COMPARES THE CRAYONS IN THE TWO BOXES.

    asked by harry
  296. positive psychology /220

    write a 200-300 word response explaining which strategies you could use to stregthen the relationship and describe how the relationship would be stregthen.

    asked by Ann
  297. Interview question - Why do you want to work here?

    I answered this in a very simple manner. I need a job to pay for my expenses that are building up. I also need to gain work experience, and if I could get the oppurtuity to become a member of your team, that would be a great help to me later in my

    asked by Anonymous
  298. science

    Imagine that you were on the moon (which has an acceleration rate 1/6 that of earth's 9.8 m/s) What would it's gravitiational acceleration rate be?

    asked by Anonymous
  299. math

    you want to take an 8-ft.wide piece of plywood through a 36-inch-wide door. What is the minimum possible height for the door to allow youto fit the plywood?

    asked by jane
  300. BEDMAS with decimals

    Hi, I'm having trouble with this question that I have worked on, but I didn't get the right answer. 25.1 + 11.4 / 7.5 (3.75)

    asked by Alex L.
  301. reading

    what is a statement about miss saunders ?

    asked by Isiah garza
  302. math

    what digit is in the tens place in 32? what digit is in the ones place in 32?

    asked by ashley
  303. Desert

    What landforms would you expect to find in a desert? Could you give me a website to go on that gives pictures and descriptions of each landform?

    asked by Anonymous
  304. Social Studies (ATHENS VS SPARTA)

    How did the growth of the Athenian power lead to war?

    asked by ZUICK
  305. Geo

    If NM=x-1 and AB=3x-7, then AB=?

    asked by Cade
  306. math

    Every week Bradley doubles his card collection. He started with 2 cards. How many cards will Bradley have after 6 weeks?

    asked by Lee
  307. health

    what are bridge maps and tree maps

    asked by aracely
  308. english

    1. x comes after what letter? 2. h comes before what letter?

    asked by Mela
  309. mgt

    help explain how organizational design like geographical, functional, customer-based, product, service, hybird, matrix, marketing channel helps determine which structure best suits target stores organizations needs.

    asked by at
  310. eng 125

    identify key qualities of drama and poetry which emphasize their performative qualities. Discuss how these characteristics shape your reading response.

    asked by Xan
  311. MATH

    THE TABLE SHOWS THE NUMBER OF STUDENTS PARTICIPATING IN THE SCHOOL DRAMA CLUB LAST AND THIS YEAR WHAT IS THEB PERCENT INCREASE IN STUDENT MEMBERSHIP FROM LAST YEAR TO THIS YEAR ROUND YOUR ANSWER TO THE NEARESTBN TENTH IF NECESSARY

    asked by katerrian
  312. climate change

    What are the consequences of the rising sea level? TY

    asked by Help me please
  313. Algebra 2

    Question is about Step Functions:(between" " are all floor functions. The formula W=d+2m+"(3(m=1)/5)"+y+"y/4" -"y/100" + "y/400" + 2 gives the day of the month of the given date; m = the number of the month in the year with January and February regarded as

    asked by Casey
  314. science

    Aside from temperature change what is another but less major reason why sea levels might rise due to climate change?

    asked by jillian
  315. science

    Aside from temperature change what is another but less major reason why sea levels might rise due to climate change?

    asked by jillian
  316. science

    What is the difference in Thermal Energy and Heat.

    asked by Anna
  317. math

    What is the ratio formed between two parallelograms one is 2 inches by 6 inches and the other is 6 inches by 18 inches?

    asked by jenna
  318. Math-URGENT,

    Given that y varies directly with x, write a direct variation equation that relates x and y. x=1/3

    asked by Izzy
  319. Spelling and Writing

    how to rewrite sentences that have mistakes in capitalizing and punctuating compound sentences

    asked by Teresa
  320. trilbailzer

    which saying had the largest number of believers?

    asked by jhel
  321. math..

    Use only four 4's along with any mathematical operators to make a total of 2348.

    asked by ..
  322. math

    if the $180 you spend each month on room and board represents 3/5 of your monthly income,what is your monthly income?

    asked by unknown
  323. Grade 9 Algebra

    4. WALLPAPER A decorative wallpaper strip has an area of 50 + 20r. If the width of the strip is 5 inches, what expression represents the length of the strip? So far I have that their GCF is 5?

    asked by Jab
  324. Science

    Formula for photosynthesis and respiration?[:

    asked by Izzy
  325. math

    14/15=2x

    asked by shawn