Questions Asked on
January 26, 2011

  1. physics

    Suppose 3 mols of neon (an ideal monatomic gas) at STP are compressed slowly and isothermally to 0.19 the original volume. The gas is then allowed to expand quickly and adiabatically back to its original volume. Find the highest temperature attained by the

    asked by david
  2. AP Calculus

    Consider the curve given by x^2+4y^2=7+3xy a) Show that dy/dx=(3y-2x)/(8y-3x) b) Show that there is a point P with x-coordinate 3 at which the line tangent to the curve at P is horizontal. Find the y-coordinate of P. c) Find the value of d^2y/dx^2 (second

    asked by Leanna
  3. physics

    Astronauts on our moon must function with an acceleration due to gravity of 0.170g . A. If an astronaut can throw a certain wrench 14.0 { m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both

    asked by mely
  4. Astronomy

    Suppose that future observations with a new telescope reveal a planet about 16 AU from a star whose mass is the same size as our sun's. How long does it take the planet to orbit the star?

    asked by Amy
  5. Fluid Mechanics

    it is estimated that it 90 percent of an iceberg's volume is below the surface, while only 10 percent is visible above the surface. for seawater with a density of 1025kg/m^3, estimate the density of the iceberg.

    asked by AAAA
  6. physics

    Two carts with masses of 15.5 kg and 1.0 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.0 m/s and 2.0 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the two

    asked by jesse
  7. Chemistry; Please help

    Write formulas for the following. 1. potassium hexacyanoferrate(III) 2. sodium hexafluoroaluminate 3. Pentaaquabromomanganese(III) sulfate 4. hexaamminechromium(III) nitrate 5. sodium tetrahydroxochromate(III) 6.trans-dichlorobis(ethylenediamine)cobalt

    asked by Sharon
  8. Chemistry

    1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

    asked by Sharon
  9. Chemistry

    10. Cyclopropane is an anesthetic that is 85.6% carbon and 14.37% hydrogen by mass. What is the molecular formula of the compound if 0.45 L of cyclopropane reacts with excess oxygen at 120. °C and 0.72 atm to form a 1.35L of carbon dioxide and 1.35 L of

    asked by Cherie
  10. math

    five students make the following guesses on the number of jelly beans in a jar: 72, 78, 68, 60 and 84. the guesses were off by 14, 2, 4, 6 and 10 (not in order). how many jelly beans are in the jar?

    asked by kristin
  11. Pre Calc

    Dr. Black is standing 15 feet away from the street lamp. The lamp is making his shadow 8 feet long. The angle of elevation from the tip of the shadow to the tip of the streetlamp is 50 degrees. How tall is the streetlamp?

    asked by Anonymous
  12. Statistics

    7. A random sample of n1 = 16 communities in western Kansas gave the following rates of hay fever per 1000 population for people under 25 years of age. 121 115 124 99 134 121 110 116 113 96 116 116 135 96 96 116 A random sample of n2 = 14 communities in

    asked by Tab
  13. math

    How to solve this??? The attendance at the game on two successive nights of Oakland A's baseball was 77,000. The attendance on Thursday's game was 7000 more than two thirds of the attendance at Friday nights game. How many people attended the baseball game

    asked by Sean charles
  14. chemistry

    Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?

    asked by Twynna
  15. physics

    A daring 510 { N} swimmer dives off a cliff with a running horizontal leap, as shown in the figure below. What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 {m} wide and 9.00

    asked by mely
  16. physics

    A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed at the instant it drives off the edge of the dock?

    asked by MS
  17. Urgent!!! Physics

    At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find

    asked by andrea
  18. physics

    A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32

    asked by nick
  19. physics

    A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.860 m/s at an angle of 33.6° above the table, and it lands on the magazine 0.0790 s after leaving the table. Ignore air resistance. How thick

    asked by riasrocker
  20. Physics Help!

    A 2.2 kg mass is attached to a spring with a force constant of 560 N/m on a smooth horizontal surface. The mass is pulled to one side, released, and allowed to oscillate back and forth. (a) find the maximum compression and expansion of the spring if the

    asked by Erica L
  21. physics

    A 55.0-kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?

    asked by ravyn
  22. please please help

    Nico is saving money for his college education. He invest some money at 8%, and $1300 less than that amount at 5%. the investments produced a total of $234 intrest in 1 yr.How much did he invest at each rate?

    asked by Tristan
  23. Pre-Algebra

    solve for m 2/3m - 5 = n

    asked by Justin
  24. Physics

    0.490 mol of argon gas is admitted to an evacuated 50.0 cm^3 container at 60.0 C. The gas then undergoes an isochoric heating to a temperature of 400 C. What is the pressure?

    asked by Joe
  25. Math

    Cliff has some money he wants to invest for his retirement. He is offered two options: 10%/a simple interest or 5%/a compounded annually. Under what conditions should he choose the first option

    asked by Emily
  26. math

    In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for $24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?

    asked by Anonymous
  27. ut

    The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice.

    asked by trey
  28. Math

    The highest dive in the Olympic Games is from a 10-meter platform. The height "h" is in meters of a diver "t" seconds after leaving the platform can be estimated by the equation, h=10+4.9t-4.9t^2 I don't know how to make a successful table for this. I

    asked by Conder
  29. Chemistry

    A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20°C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20°C). The bottle is brought outside and stored at 0.0°C. (See

    asked by Ashley
  30. physics

    Water leaves the fireman's hose at rate of 7.2 kg/s and with a velocity of 21 m/s. Calculate the force exerted by the water jet on the wall of a building.

    asked by Vanessa
  31. Math

    Please help me with this problem. In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for $24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?

    asked by Anonymous
  32. chemistry

    suppose you have two 1-L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion through a pinhole leak?

    asked by meg
  33. physics

    A 200-m-wide river flows due east at a uniform speed of 4.9 m/s. A boat with a speed of 9.0 m/s relative to the water leaves the south bank pointed in a direction 33o west of north. What is the (a) magnitude and (b) direction of the boat's velocity

    asked by jr
  34. physics

    A major leaguer hits a baseball so that it leaves the bat at a speed of 31.5 and at an angle of 36.1above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 8.00 above the point at which it left the bat?

    asked by John
  35. Physics

    A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.

    asked by sagara
  36. Chemistry

    If 57j of heat are added to an aluminum can with a mass of 17.1g, what is its temperature change?

    asked by Anonymous
  37. statistics

    The numbers of hours of life of a torch battery is normally distributed with a mean of 150 hours and standard deviation of 12 hours. In a quality control test, two batteries are chosen at random from a batch. If both batteries have a life less than 120

    asked by Anonymous
  38. Math

    Lois invests $650 every 6 months at 4.6%/a compounded semi-annually for 25 years. How much interest will she earn after the 25th year?

    asked by Emily
  39. physics

    Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 6.710 g, is pressed into a leaf of 1.661 μm thickness, what is the area (in

    asked by sagara
  40. math

    On July 1, 1996, Anna invested $2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.

    asked by Emily
  41. Statistics

    5. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of

    asked by Tab
  42. Statistics

    9. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

    asked by Tab
  43. Algebra

    A coffee manufacturer wants to market a new blend of coffee that will sell for $3.90 per pound by mixing two coffees that sell for $2.75 per pound and $5 per pound, respectively. What amounts of each coffee should be blended to obtain 100 pounds of the

    asked by Megan Brown
  44. Algebra

    What is the probability that a randomly selected three-digit number is divisible by 5? Express answer as a common fraction.

    asked by Jay
  45. physics

    A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?

    asked by mely
  46. physics

    A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?

    asked by andrea
  47. Statistics

    8. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

    asked by Tab
  48. math

    greg exchanged 200 canadian dollars for 1/5 fewer u.s dollars. after spending 3/4 of the u.s dollars, how many did he have left?

    asked by sydney
  49. Algebra

    The purity of gold is measured in karats. Twenty-four karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16-karat gold jewelry has a mass of 30 grams and another piece of 10-karat gold jewelry has a mass of 40 grams. Find the

    asked by Laur
  50. MATH

    Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane

    asked by PLEASE HELP!!!
  51. physics

    A meterstick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter stick released, you grab it with those two fingers. You can calculate your reaction time from the distance the meterstick falls,

    asked by andrea
  52. Literature

    what is the author's purpose in "The Sniper?

    asked by Michaela
  53. science

    how is water purified in the water cycle? why is the sun so important in the water cycle? what role does evaporation play in the water cycle? thanks!!!! :)

    asked by Bri
  54. math

    fifteen out of 25 students in Mrs. Smith's class are boys. what is the ratio of boys to girls? i put 1 to 6. is that right?

    asked by kamal
  55. Physics

    An organ pipe open at both ends has a harmonic with a frequency of 480 Hz. The next higher harmonic in the pipe has a frequency of 540 Hz. Calculate the frequency of the fundamental and the length of the pipe. I know 540/480 is 9/8. I have no idea where to

    asked by Rachel
  56. Geometry

    Two of the sides of a triangular lot have lengths of 90 feet and 80 feet. If the angle opposite the 80-foot side is 59°, what is the length of the third side of the lot to the nearest tenth of a foot?

    asked by Dolores
  57. Statistics

    10. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and

    asked by Tab
  58. math

    7, 49, 343, 2401 Write an algebraic expression that will represent the nth term of the sequence.

    asked by Isha
  59. STUDY UNIT: THE PRINTED WORD

    Which one of the following items would be most likely to have a list of chapter titles? A. A magazine B. A novel C. A newspaper D. An article

    asked by shamso
  60. physics

    A new "D" battery has an emf of 1.5 V. When a wire of negligible resistance is connected between the terminals of the battery, a current of 25 A is produced. Find the internal resistance of the battery. ________ Ω

    asked by ali-1
  61. math

    how long will it take to earn 525$ in interest if $3500 is invested at a 6% annual interest rate?

    asked by meghan
  62. Physics help

    a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string

    asked by Erica L
  63. Chemistry

    is fumaric acid polar or non-polar?

    asked by Nina
  64. Statistics

    6. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of

    asked by Tab
  65. Reading APE

    How does the author's attitude toward her name change over the course of "Newcomers in a Troubled Land"? Support your answer with evidence from the selection.

    asked by Fartun
  66. Math

    The total number of DVD videos produced and shipped in 1998 was .5 million. In 2004,the total number of units reached 29.01 million. Assuming the exponential model applies: a)Find the value of k and write the function b) Estimate the number of DVD videos

    asked by Anonymous
  67. physics

    A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final

    asked by maria
  68. Math Help Please

    Nico is saving money for his college education. He invest some money at 8%, and $1300 less than that amount at 5%. the investments produced a total of $234 intrest in 1 yr.How much did he invest at each rate?

    asked by Tristan
  69. Social Psychology

    Describe the reciprocal relationship between behavior and attitudes?

    asked by Toni
  70. Algebra

    You have a piggy bank containing a total of 85 coins in dimes and quarters. If the piggy bank contain $14.50, how many dimes are there in the piggy bank? Interest=principal multiply Rate multiply 1, or interest=principal multiply rate.

    asked by Megan Brown
  71. physics

    The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).

    asked by Megan Fox
  72. math

    Could you divide 14 shirts into two equal groups? why or why not

    asked by mick
  73. math

    A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective? Did not understand the posted answer before, need it simplified.

    asked by Jeff
  74. chemistry

    How many grams of each substance are needed to prepare th e following solutions? 50.0 ml of 8.0%(w/v)KCL

    asked by Linn
  75. Math

    A class has 12 students. In how many different ways can the students be put into lab groups consisting of 3 students in each group. The answer in the book is 369600. But I do not understand how they got this answer.

    asked by KC
  76. Precalc

    how to solve for x: 500e^(0.3x) = 600 Steps please.

    asked by Amy
  77. trig

    a plane is flying at an altitude of x with the distance at 800 meters with an angle of 70 degress. what equation would you use to solve. tan70= x/800 tan70= 800/x sin70= x/800

    asked by tom
  78. physics

    A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.

    asked by sagara
  79. Algebra

    Two trans leave Chicago going opposite directions, one going north and the other going south. The northbound train is traveling 12 mph slower than the southbound train. After 4 hours the trains are 528 miles apart. Find the speed of each train. I would

    asked by Megan Brown
  80. math

    A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective?

    asked by Jeff
  81. algebra

    what is the percent of change from $48.50 to $38.80

    asked by Julie
  82. chemistry

    What is the nuber of grams of oxygen present in 4.50 x 10^22 SO3 moleucles?

    asked by james
  83. geometry

    the lateral edge of side 12 makes an angle of 30 degrees with the base, what is the altitude of the square prism?

    asked by Anonymous
  84. law

    How does the United States deal with problems related to civil order control?

    asked by mee
  85. Math

    On July 1, 1996, Anna invested $2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.

    asked by Emily
  86. Business Computer Information Systems

    When you proofread look for punctuation, spelling and Capitalization Mistakes. is this punctuated correctly?

    asked by yelena
  87. physics

    A bottle with a volume of 180 U. S. fluid gallons is filled at the rate of 1.6 g/min. (Water has a density of 1000 kg/m^3, and 1 U.S. fluid gallon = 231 in.^3.) In years, how long does the filling take?

    asked by sagara
  88. physics

    The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).

    asked by sagara
  89. chemistry

    What are the number of atoms of nitrogen in 10g of N2H4?

    asked by james
  90. Physics

    a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string

    asked by Erica L
  91. Chemistry

    The vapor pressure of water at 25°C is 23.76 mm Hg. What would you calculate as the new vapor pressure of a solution made by adding 50.5 g of ethylene glycol (HOCH2CH2OH, antifreeze) to 50.5 g of water? You may assume that the vapor pressure of ethylene

    asked by Rukky
  92. physics

    Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

    asked by ravyn
  93. physics

    At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.5 × 105 m/s and vy = 3.0 × 103 m/s. Suppose the electric field between the plates is given by In unit-vector notation, what are (a) the

    asked by trisha
  94. science

    an electron is released into a uniform electric field of magnitude 1.5 x 10^3 N/C. Calculate the acceleration of the electron, neglecting gravity. I know that if a charge is released in the electric field, it experiences a force and accelerates, gaining

    asked by becka
  95. physics

    Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

    asked by ravyn
  96. physics

    Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 =

    asked by jr
  97. chemistry

    If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?

    asked by Twynna Andrews
  98. Urgent!!! Physics

    A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and

    asked by andrea
  99. physics help!!

    A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final

    asked by maria
  100. physics HELP

    A 7450 kg satellite has an elliptical orbit, as in Figure 6.9b. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

    asked by maria
  101. trigonometry. Math

    In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?

    asked by Melody
  102. physics

    (a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 3.76 cubic meter of water in kg. (b) Suppose that it takes 10.4 hours to drain a container of 59.1 m^3 of water. What is the “mass flow rate,” in kg/s, of

    asked by sagara
  103. Algebra II-Please check calcs

    Could someone check this matrix calculation The first matrix dimension is 1 by 3 row 1 = 1 row 2 = 7 row 3 =3 Second matrix is 1 by 3 Row 1 column one =2 row 1 column two = -5 row one column three = 5 my calculation is that it would be the dimensions of 3

    asked by Ray Scholz
  104. physics

    The Pacific Crest Trail runs from the Mexican border to the Canadian border through California, Oregon, and Washington,covering 2650 miles of trail, but only about 1000 straight-line miles. B).If you hike this trail in 14.0 weeks, from Mexico to

    asked by mely
  105. math

    How could knowing that 35/7 equal 5 help you find 42/7 explain

    asked by t
  106. physics

    An 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless pulley to a 66 kg sandbag. With what speed does the man hit the ground if he started from rest?

    asked by jr
  107. Statistics

    3. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

    asked by Tab
  108. Drwls[SCIENCE]

    Asthenosphere can act like a viscous liquid right? Is lithosphere part of the crust, or just part of the mantle? The core is the most solid part within the earth right? P-waves can travel through all the layers, except for S-waves right? Also What really

    asked by Anonymous
  109. ChemistryDrBob222

    Arrows disappeared from below added them back to the equations. ??(a) I don't understand ln(No/N)=akt The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become

    asked by David
  110. math

    The masses of newborn children are normally distributed with a mean of 3.4 kg and a standard deviation of 0.8 kg. A newborn is at risk if the baby'd mass falls in the lowest 4%. These babies have a mass of less than ____?

    asked by Sandy
  111. Chemistry 1200

    Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found

    asked by Rukky
  112. Chemistry

    Given the reaction system; 2 NO (g) + O2 (g) -> 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.

    asked by Michael
  113. 4th grade math

    of the third graders who were asked, 2/5 like pizza the best, 3/15 like hamburgers the best, and 18 like macaroni the best. How many third graders were asked their favorite food?

    asked by michael
  114. Finance

    If a firm had operating profits of 100,000 taxes of 17,000 interest expense of 34,000 and preferred dividends of 5,000. What was the firms net profit after taxes

    asked by dee
  115. physics

    A 1.90-kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 14.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The object is

    asked by Roo Kun
  116. physics

    Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crash-resistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must

    asked by John
  117. physics

    Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

    asked by ravyn
  118. Math

    Suppose f(n+1)/f(n)= n for all positive integers of n. If f (1)=1, find the numerical value of f(6). How do i figure out this?

    asked by Ron
  119. espaniolII

    Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una buena dieta, va a hacer mas feliz también. Es tan difícil para mantener una vida saludable. Es esencial que no comas comida basura y hacer ejercicios todos los dias.

    asked by bj
  120. math

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? This the ans 2 hours and 24 minutes but how did they work it out?

    asked by Zac
  121. Statistics

    4. Let X be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with A random sample of 19 Australian bank stocks has a sample mean of For the entire Australian stock market, the mean

    asked by Tab
  122. math

    A can of lemonade concentrate has a capacity of 355 mL. The concentrate is mixed with 4 cans of water. a) how much lemonade is made? b) how many 200-mL glasses can be poured?

    asked by raluca
  123. physics

    an astronaut floating in space is separated from his ship. his mass in 85.0kg and he is 10.0m from ship. he throws a wrench moss is .8000kg opposite direction with a velocity of 20m/s. how long will it take him to reach the ship?

    asked by ricki
  124. History

    Briefly can you tell me, What social, political, and economic changes and advances occurred during the Roaring Twenties?

    asked by Rena
  125. Algebra 1

    A rectangular piece of art is 4 meters wide and 6 meters long. It is surrounded by a uniform sidewalk. If the area of the uniform sidewalk is 39 square meters, how wide is the sidewalk

    asked by Elizabeth
  126. geometry

    Find the area of the smaller segment whose chord is 8" long in a circle with an 8" radius. (3.14) A=( pie - / )inches^2 please help me i don't understand this problem

    asked by yelena
  127. College English

    Read the sentence below. Then, choose the correct combination of antecedents and pronouns. “The aliens may also implant tiny metal tracking devices in the bodies of these abductees so that they can locate them easily in the future.” A. They replaces

    asked by Betty
  128. Algebra 1

    how do u find the slope of a line

    asked by Courtney
  129. Chem 1200

    Freezing-point depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found

    asked by Rukky
  130. physics

    In February 2004, Austrian physicists measured two events (having to do with the behavior of electrons) separated by the shortest time interval ever measured, 100 attoseconds. How far would light travel in this time interval? (1 attosecond = 10^{-18}

    asked by mely
  131. Algebra 1

    Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

    asked by Ann
  132. statistics

    From past experience it is felt that the random variable, X, the age of a mother at the birth of her first child, is normally distributed with a mean of 21.3 and a variance of 16. Find the probability that a randomly selected mother: (a) has her first

    asked by Tian
  133. Espanol III

    I am writing a composition for class and need someone to peer edit. No one around knows spanish so I am hoping someone here would be willing to look over it :) Thank you! Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una

    asked by Jason
  134. physics

    Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?

    asked by ravyn
  135. Biology!!

    The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.

    asked by NEEDS HELP!!
  136. Medical Information Management and Office Practice

    Please check my answers. 1.Dr. Jones used an abbreviation that no one was familiar with. What can be done to prevent this from happening in the future? A. Ask the physician to take a course on medical abbreviations. B.Designate an approved abbreviations

    asked by Nadya Crouch
  137. physics

    The nine Ring Wraiths want to fly from Barad-Dur to Rivendell. Rivendell is directly north of Barad-Dur. The Dark Tower reports that the wind is coming from the west at 52 miles per hour. In order to travel in a straight line, the Ring Wraiths decide to

    asked by Chip
  138. Organic Chem

    1. what is the monomeric unit of a chain of molecules joined by peptide bonds? Is the answer glycine? 2. Write the equation for the addition of hydrochloric acid to ethene. What is the name of the product formed? C2H4 + HCl -------> ??? Any help with any

    asked by John
  139. physics

    is a neon light a fluid?

    asked by Juliet
  140. math

    If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

    asked by Zac
  141. English

    I had duplicate bookings on Cebu Pacific air. com because of a problem on the Internet. I'd like to cancel one booking. How can I cancel one booking. Only one adult and a baby are going to get on the air plane. And please let me know how to pay the plane

    asked by rfvv
  142. economics

    . Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia,

    asked by annie
  143. Physics

    The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block

    asked by Sarah
  144. chemistry

    Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?

    asked by Twynna
  145. Chem

    Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.

    asked by Frank
  146. calculus

    integrate x+5/(x^2+10x+26)

    asked by Anonymous
  147. Maths,Science

    (sinx)^8 + (cosx)^8=17/32

    asked by Abhishek Mishra
  148. History

    Describe an advantage of havinf federal judges appointed rather then elected

    asked by Hannah
  149. Math-Algebra II

    How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34? The only thing I know is that it represents a negative correlation. Please shed any light you can.

    asked by Michelle
  150. algebra2

    how do you factor this? x(x-3)+5(x-3)

    asked by janelle
  151. math

    verify that f and g are inverse functions. f(x) = 5x^2 x>(or equal too)0 g(x)= (x+2/5)^1/2

    asked by Amanda
  152. factoring quadratic expression

    w^2+2w+1

    asked by stacy
  153. math

    7. If you can drive your car 540 miles on 26 2/3 gallons of gasoline, how many miles can you drive on one gallon?

    asked by john
  154. Physics

    Don't know how to calculate this, or the formula? A mono digital sound sample has a bit depth of 8 bits and a sampling rate of 9000 Hz. How much memory in bytes would it take to store 45 minutes of sound at this quality? Calculate your answer in bytes.

    asked by Student in Need
  155. 5th math

    Jackie ran 4 Miles in 28.5 minutes Which equation could be used to determine the average number of minutes it took jackie to run Each mile(k)? k-4=28.5 or k+3=28.5 or k/3=28.5 or 4k=28.5 can you tell me which one is the right equation?

    asked by pat
  156. statistics

    The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z

    asked by Anonymous
  157. sociology

    * How do you think life in the United States will change in the next 10 years? * How might the Internet be involved in the changes? * How do you think sociologists might use the Internet to study life in the United States? Name 3 specific ways.

    asked by Anonymous
  158. Math

    Select three (3) coins, but assume that there are 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?

    asked by Amanda
  159. math

    what number has 5 hundreds and 12 tens

    asked by ann
  160. ChemistryDrBob222

    Arrows disappeared from below added them back to the equations. The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in

    asked by David
  161. Algebra 1

    Write a equation of the line containing the given point and paralled to the given line (-5,8);3x=5y+2

    asked by Esther
  162. science

    Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?

    asked by Sandra
  163. L Pre-Cal

    Hey! I'm getting stuck on how to solve this system of linear equations. Can anyone show me step by step Thanks! 3x-5y+5=1 5x-2y+3z=0 7x-y+3z=0

    asked by Norah
  164. algebra

    From her house, Mary travels to New York at an average rate of 50 miles per hour and then returns home at an average rate of 32 mph. After taking 2 hours longer on the return trip than the time it took her to get to New York,she finds that she still has 17

    asked by Mia
  165. Algebra 1

    Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?

    asked by Ann
  166. statistic

    A business firm considers the number of years of formal education, X, a prime factor in screening applicants for employment in its plant. Assume from past experience that X ~ N (10.6, 2.5), where 10.6 is the mean and 2.5 is the standard deviation. (a) If

    asked by Tian
  167. physics

    A 55.0-kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?

    asked by ravyn
  168. Algebra 1

    Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks

    asked by Esther
  169. Math

    what is the next number with 2x2x2x2x2x5 as factorization

    asked by Buttermanie
  170. English

    Can you please check these few sentences? Thank you. 1)I insert a 50-cent coin into the trolley and I do my shopping. 2)I need to buy 200 grammes cooked ham and 150 grammes of raw ham. 3)Then I need to go to the counter of sliced meats and salami and then

    asked by Franco
  171. Algebra II

    What would make this statements False? The opposite of each natural number is a natural number. There is no whole number that has an opposite that is a whole number.

    asked by April
  172. Precalc

    how to solve 5(2^(3x)) = 8 Steps too please answer is ln 1.6 / 3 ln 2

    asked by Amy
  173. science

    You are designing a scale model of the solar system mercury it is 4,878 km in diameter.using the following scale factor, how large does your model of mercury need to be? A. 160cm B. 16cm C.146cm D.30cm

    asked by walter
  174. english

    Christina and Christopher worked together and completed a project about astronomy.

    asked by Anonymous
  175. Math

    You're reading My ones digit is 1 less than 4. My tens digit is the greatest number of tens that can be in a number. What number am I?

    asked by Nicole
  176. Physics

    At liftoff, a rocket has a mass of 2x10^6 kg. It expels hot gas which provides an upthrust of 3x10^7. Find the initial accelerating of the rocket.

    asked by Joey
  177. Physics

    I have a rubber ball. Its diameter is 5.16 cm. Its density is 1.5 Mg/m^3. I need to find its weight in US units. I know to use w=pVg I am coming out with the wrong answer though. Can someone help?

    asked by Morgan
  178. Chemistry

    The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,

    asked by Paul
  179. math

    Find the x-intercept 3x-5y=14y+9x I think y=0 but 3x=9x does not make sense to me. Please help me. Thank you.

    asked by juan
  180. math

    2. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of

    asked by Tab
  181. Chemistry

    The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C)---{k(/s)} --- lnk---1/T 290--- {2.52*10^-5}--- ?--- ? 299--- {5.25*10^-5}--- ? --- ? 330--- {6.30*10^-4}--- ?--- ? Complete the table above and,

    asked by Paul
  182. Math

    For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's

    asked by Melanie
  183. physics

    how can i plan and design a lab to investigate how electric current causes contraction of a spiral wire spring

    asked by tinamessi
  184. Physics

    A man with mass m =96.4 kg (weight = 212.1 lbs is walking towards a patio at 2.00 m/s (4.47 mph) when, at the last moment, he realizes the sliding glass door is closed. He puts out his hand suddenly to stop himself, and comes to a halt in 90.0ms. Find the

    asked by Megan
  185. English IV

    I'm have a hard time with this project. Based on the restoration and the 18th century, I have to write a prose satire aimed at changing the attitude of my audience. Please help!!!

    asked by Charlotte T
  186. geometry

    When finding the perimeter of a figure on a grid,whydo you not count the spaces inside tha grid?

    asked by melinda
  187. algebra2

    how do you factor 48x3z5y - 36x3z3y4 + 48x2z5y

    asked by janelle
  188. chemistry

    NaCL is composed of 39.3% Na and 0.7%. Calculate the mass of Na in 0.375gm salt.

    asked by Twynna Andrews
  189. physics

    someone swings down pendulem and rescue the lady in distress by grabbing her. inelastic collision at the equallibrium point o fthe pendulem. his mass is 90kg her mass is 50kg. what is the masimum height of the oppsite legde that he and she would ba able to

    asked by ricki
  190. physics

    someone spinns with an angular velocity of 4.55rad/s with arms held out. his rotational inertia is 2.7kgm^2. whn the he pulls his arms in his angular velocity increases to 7.60rad/s. what is his rotary ek?

    asked by ricki
  191. french

    Please help me by translating the following french terms into english: 1) le litchi 2)le bonbon 3)le ragout 4)l'epice 5)les accras 6)les matoutous 7)le blaff 8) le feroce 9)le lambi

    asked by Gabrielle
  192. math

    what equation will equal 12,345,678,987,654,321

    asked by azenette
  193. geometry

    If a pentagon has a side of 140, how many inches is the rest of the side?

    asked by Whitney
  194. algebra

    8% of(n+2)equals 12. What is n?

    asked by carol
  195. pennfoster edu.

    an overgarment worn with, and slightly shorter than, a straight skirt is called a?

    asked by Danielle
  196. chemistry

    What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???

    asked by Brit
  197. chemistry

    What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???

    asked by Brit
  198. chemistry

    how many mL of watel should be added to yeild a soultion that has a concentration of .125 M when you start with a 250 mL soultion of 1 M AgNO3?

    asked by nancy
  199. Algebra 1

    Write an equation of the line containing the given point paralled to the given line (-8,6);2x=3y+4 Thank you

    asked by Esther
  200. spelling

    i need sentns for join

    asked by birksam
  201. social studies

    what did the kings did for their peole nd what did they get in return

    asked by gaby
  202. Physics

    A hydrometer is an instrument for measuring the specific gravity of a liquid. For example, producers of maple syrup use the hydrometer to find how much sugar is in the collected sap. Markings along a stem are calibrated to indicate the specific gravity for

    asked by MJ
  203. Algebra 1

    Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks

    asked by Esther
  204. 7th grade math

    what is te best numbers for the base of a trapezoid that has a aarea of 4 square units and a height of 1

    asked by sam
  205. calculus

    What is the average rate of change of y=4x^3 over the interval P(1, 4) and Q(5, 500)?

    asked by evan
  206. spelling- analogys

    broom: sweep :: brush:_______

    asked by ele
  207. Algebra 1

    write an equation of the line containing the given point and perpendicular to the given line (6,7);6x+=9 I am having a terrible time figuring out the last part. I would appreciate any help. Thank you.

    asked by Esther
  208. trigonometry plz explain.

    Which way is done correctly and why ?? Express the following in degrees,minutes, and seconds: (1)4 --> (180/pi)*4 = 229.18312 229.18312 = 229 + (0.18312*60) = 229 degrees + 10.9872' = 229 deg 10' + (0.9872*60)" = 229 deg 10' + 59.2" or (2)4*180/pi =

    asked by Anon
  209. factoring quadratic expression

    w^2+2w+1

    asked by stacy
  210. math

    how do i factor this y=x to the power of 2 -2x-5? thanks in advance!

    asked by anonymas
  211. ALGEBRA

    I have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (1-4t^2), and (1-2t). 1-4t^2=(1+2t)(1-2t) 1+2t = 1+2t 1-4t^2= (1+2t)(1-2t) 1-2t = 1 - 2t. The LCM for all numbers is 1-4t^2 = (1+2t)(1-2t) Thank you

    asked by AMY
  212. Algebra 1

    write an equation of the line containing the point and perpendicular to the given line (4,-8); 2x+5y=4 I am having a very hard time, but I'm trying hard to study the steps for solving the problem. Profoundly, thank you.

    asked by Esther
  213. statistics

    what is the percentage that 2 random people can be chosen from a total of 14 people.

    asked by john
  214. child day care

    a child development is affected most by the

    asked by brenda
  215. Math

    For this problem, assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 2 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd

    asked by Amanda
  216. 5th math

    What is the measure of each side of a square with a perimeter of 60 inches? this one I'm total lost . please ! show me how you do this problem. thank you!!

    asked by pat
  217. physics

    A 59.0-Ω resistor is connected in parallel with a 116.0-Ω resistor. This parallel group is connected in series with a 15.0-Ω resistor. The total combination is connected across a 15.0-V battery. (a) Find the current in the 116.0-Ω resistor. _______ A

    asked by ali-1
  218. physics

    Multiple-Concept Example 9 discusses the physics principles used in this problem. Three resistors, 2.2, 3.9, and 6.4 Ω, are connected in series across a 24-V battery. Find the power delivered to each resistor. resistance (Ω) power (W) 2.2 ______ 3.9

    asked by ali-1
  219. Algebra 1

    In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you for your help

    asked by Esther
  220. physics

    Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.8t^0.8 - 2.9t + 21, with t ≥ 0, m in grams, and t in seconds. (a) At what time is the water mass greatest, and (b) what is that greatest

    asked by sagara
  221. 5th grade

    The Chang Toy Factory in China can produce 35 mini toy care each minutes at a cost of 77 cents. then, a package of 35 is put in a cardboard box that holds 350. What does it cost to procuces 285 toy cars? can you show me how to solve this problem .? do you

    asked by pat
  222. Mathematics

    37.8 degrees

    asked by Melody
  223. chem

    Using the values given, calculate the amount of heat that is liberated when a 2.7-kg bucket of steam at 100.0°C is cooled to give a 2.7-kg bucket of water at 28.0°C. (Condensing steam has −ÄvapH = −2440 J/g and cooling water has cliq = 4.184

    asked by Rukky
  224. math

    Ben can complete 3 math problems in 20 minutes. If he continues working at the same rate, how long will it take Ben to complete 15 math problems?

    asked by Anonymous
  225. math

    The question says .. match the equivalent addition and subtraction expressions a) -6 -9 b)-10 - (-12) c)6-9 d)10-12 e)-12-10 A)10+(-12) B)-6+(-9) C)-12 + (-10) D)6+(-9) E)-10+12

    asked by Melissa
  226. math

    The question says .. match the equivalent addition and subtraction expressions a) -6 -9 b)-10 - (-12) c)6-9 d)10-12 e)-12-10 A)10+(-12) B)-6+(-9) C)-12 + (-10) D)6+(-9) E)-10+12

    asked by Melissa
  227. Chemistry

    Determine the volume of concentrated HCL and the volume of water needed to produce 20mL of 6M HCL.

    asked by Michelle
  228. math

    a rope is 120 ft long and the water is 20 ft deep. how far is the anchor from a point directly below the boat?

    asked by lee
  229. physics

    Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

    asked by ravyn
  230. Algebra

    Write an equation of the line containing the given point and paralled to the given line. Express your answer in the form y-mx+b (4,7); x+ 3y=8. The equation of the line is y=? Thank you

    asked by Esther
  231. Human services

    Where would I look for information on problems that infant daycare have. I know abuse and negalect are two major problems, but I need resources to back up the information that I know.

    asked by Patiance
  232. Physics

    Hello, I have e problems with dis question A harmonic wave on a string moves along the x-axis according to: (x,t) =5.0 (cm) sin[ (2.5m^-1) x - (63s^-1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscilations on the string is closest to ... me thought

    asked by Me
  233. math

    write fraction as a decimal nine and four tenth

    asked by Joshi
  234. math

    On Monday afternoon, Andrew rowed his boat with current for 4.5 hours and covered 27 miles, stopping in the evening at a campground. On Tuesday morning he returned to his starting point against the current in 6.75 hours. Find the speed of the current and

    asked by Sean charles
  235. math

    how many pieces of ribbon each 4.5 cm long can be cut from alength of 4 and a half metres?

    asked by elise
  236. calculus

    Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem

    asked by David
  237. math

    what is the anwser to 5 hundreds and 12 ten

    asked by ann
  238. Math

    solve for h A= 1/2(a +b)h I've tired over and over but still can't find the answer

    asked by PLEASE HELP
  239. Science

    Name the type of research for each of the following and rank them 1-5 (1 strongest, 5 weakest: 5 points). A. A researcher collects questionnaires from people who exercise and nonexercising people to determine whether there was a difference in physical

    asked by SammieR
  240. Math (Pre-cal)

    I can't seem to figure this out. A ship leaves at noon and travels due West at 20 knots. At 2:00 it changes to N54°W...Find the bearing and the distance FROM port at 3:00 pm. I've looked at this program for a while but can't figure it out.

    asked by Dragon
  241. math

    convert 94/10 into a decimal?

    asked by Joshi
  242. Math

    A recipe calls for 4 1/2 cups of flour for 72 cookies. How many cups of flour would be needed for 48 cookies?

    asked by Jenna
  243. Algebra

    Graph the equations y=2|x-5|+2

    asked by Valerie
  244. chemistry

    How would you caculate this problem: What is the mass in grams of 150*10^12 iron atoms, each having a mass of 56 amu?

    asked by Donna
  245. Physics

    a sled is capable of reaching speeds of 450 m/s in 1.82 s then stopped in 1.92 s what is the acceleration

    asked by Jim
  246. Bio

    What role does DNA play in helicase?

    asked by Grant
  247. Math

    For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's

    asked by Melanie
  248. math

    a paint color is made by mixing red and yellow paint. the ratio of red to yellow is 4 to 9. how many quarts of yellow paint must be used for 12 quarts of red? explain how you find your answer.

    asked by kamal
  249. English

    Are the following sentences possible? Thank you very much. 1) He shot me in the leg. 2) He showed me the way to the supermarket. 3) He likes shooting. 4) He shouted at him. 5) I always show my gift card to the check-out clerk so that I can get a discount

    asked by Franco
  250. Algebra

    Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem

    asked by David
  251. math

    sam earned $4,000 from his business. he gave 1/5 of it to his son and daughter in law as a gift. he invested 1/2 of the remaining amount. how much did he have left?

    asked by sydney
  252. English IV

    Write a research paper about developments in society during the Romantic Era (1785-1832).

    asked by Charlotte T
  253. chemistry

    what is the molarity of a solution when you ha 2mole of ammonium chloride (AgNo3) in 1L?

    asked by Kim
  254. math

    ivested $1,500 in the stock market on january 1, she lost 1/3 of it by the end of january and 2/5 of the remaininbg amount by the end of february. how nmuch did she have left?

    asked by joan
  255. spelling

    Can I replace the word to with from in the following sentence: Laura often lost her homework on the way to school.

    asked by William
  256. algebra

    If a pizza is 15.00 and the cost is 55.00 labor is 4.00 what is the equation to determine revenue?

    asked by Sue
  257. Economics

    Explain the entities social regulation affects and how it affects them.

    asked by Walker
  258. science

    what is the volume of a 6.o-kg aluminum ball having a density of 2700 kg/m3?

    asked by tony
  259. algebra2

    how do you factor this? a4b + a5b + 3

    asked by janelle
  260. math

    niran has 72 centimeters of molding to make a frame for a print. this is not enough molding to frame the entire print.How shouldhe cut the molding to give the largest possible area for the print using the inside edge of the molding as the perimeter?

    asked by maria
  261. science

    what is alkaline solution?

    asked by amna
  262. physics

    A 7.9 kg object undergoes an acceleration of 2 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N.

    asked by yo
  263. algebra2

    what is the missing variable? 3a^2bx(?)=6a^2b^2x

    asked by janelle
  264. pre-algebra-math

    two fractions equivalent to the given factor 18/21 and the other 3/27:) please helpp

    asked by PLEASE HELP :)
  265. algebra

    -4x-12= can someone tell me how to solve

    asked by angiie
  266. space car

    design a car for astronauts to drve in outer space

    asked by alex
  267. english

    only five days later, the child itch rash had almost completely disappeared which word is the simple subject in the sentence above? a) five b) days c) Childs d) rash

    asked by Anonymous
  268. math

    a sum of 102,000 is to be split by 3 people, (1) gets 5 times as much as (2) which gets 2/5 as much as (3). how is this problem solved

    asked by matt
  269. ctc

    y=-1777x+27153 x=7606

    asked by ula
  270. ctc

    3r-2s=11 2r+3s=29

    asked by ula
  271. Maths

    quelle longueur aura une toile a  l'interieur d'une piscine si le diametre de la piscine est 5,5 m ?

    asked by Lori-Anne
  272. ALGEBRA/PLEASE HELP

    have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (1-4t^2), and (1-2t). 1-4t^2=(1+2t)(1-2t) 1+2t = 1+2t 1-4t^2= (1+2t)(1-2t) 1-2t = 1 - 2t. The LCM for all numbers is 1-4t^2 = (1+2t)(1-2t) Thank you

    asked by AMY
  273. trigonometry??

    Did I do this right???? Express the following in degrees,minutes, and seconds: a.4 --> (180/pi)*4 = 229.18312 b.0.23 --> (180/pi)*0.23 = 13.17803 c.pi(3.14159)/6 --> (180/pi)*(pi*3.14156/6) = 94.24778 d.3*pi/2 --> (180/pi)*(3pi/2) = 270 e.-1.4 -->

    asked by Anon
  274. chem

    determine the osmotic pressure of the solution at STP. (Assume these solutions behave ideally.) a)0.116 mol fraction glucose (C6H12O6) in water (Assume the density of the solution is 1.02 g/mL.) b)0.0948 mol fraction NaCl in water (Assume the density of

    asked by Rukky
  275. religion 110

    How might modern religion benefit from indigenous religious?

    asked by allonda
  276. math

    how do i find the slope of line AB if A`s coordinates are(-4,3) and B`s coordinates are (2,-1)

    asked by :(plz help
  277. pythagrean theorem

    A rectangle is 6m. wide and 11m long. How long is the diagonal of the rectangle?

    asked by Destiny G.
  278. technology

    what does Hard Disk-FDD/HDD mean?

    asked by kate
  279. spanish

    vas a la clase de ingles en la manana o en la tarde?

    asked by Anonymous
  280. Algebra 1

    In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you so much

    asked by Esther
  281. math

    How do I create a game with a 55percent chance of winning for Gr12 data management

    asked by Lori
  282. cultural diversity

    Is cooperative/competitive when a child prefers to help peers and subordinate his personal intrest to theinterest of the group

    asked by Anonymous
  283. Area and Perimeter

    Create a new floor plan with a master bedroom showing an area of 120 square feet and a perimeter of 44 feet

    asked by Di'Aisha
  284. Algebra

    Graph the equations y=2|x-5|+2

    asked by Rachal
  285. penn foster

    i'm typing my lab 2, case 8 radiology report and can't make out one word in the report. "carotery stick" it what it sounds like the lady is saying, but it doesn't make sense and I can't find it in any dictionary. help

    asked by jojo
  286. math

    did not understand your answer?

    asked by Jeff
  287. us history

    what issues did the compromise of 1850 leave unsettled

    asked by chris
  288. physics

    Is a lightning a fluid?

    asked by Juliet
  289. math

    What is the answer to -12+r=-11

    asked by Jason
  290. math

    how do you find out the perimeter and the area of a parollelogram in a short cu way in a centimeter grid paper?

    asked by Joe
  291. math

    how to add mixed fractions:17 2/3 23 1/4= ?

    asked by Isaiah
  292. Science/Nutrition

    True or False? Resveratrol in red wine is an example of a phytochemical.

    asked by SammieR
  293. personal planning

    what types of diseases can you get if you are unhealthy?

    asked by katrina
  294. Math

    In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to remove the last bean. If the initial pile has 29 beans, should you want to go first or second to guarantee a win?

    asked by Diana
  295. socisl studies

    name one cause of the french and indian wars name 2 results of the french and indian wars

    asked by addison
  296. analogies

    an 8 letter analogy for man: woman:: carved

    asked by teach2
  297. Math

    if 6 bugs are in a cage and you take away 70 but you need to divide that by 3, how many bugs would be left?

    asked by Sarah
  298. Math

    I need to find k for the probability distribution: P(x)=k(x+2) for x=1,2,3 I tried subbing in the x-values, which gave me: P(1)=3k P(2)=4k P(3)=5k But I still have no idea what I need to do to find k. Guidance, please?

    asked by Anonymous
  299. algebra

    standardformofquadratic

    asked by Anonymous
  300. ELA

    i need 5 sentences with simile metaphor personification and useing these spelling words studious zealous luxurious miraculous joyous

    asked by Armontae
  301. math

    g(x) = -2/(4x+5)

    asked by alex
  302. Math

    Determine whether the function is periodic. State the period, the domain and the range of g(x)= 2 cos 2x+3 sin 5x

    asked by Sierra
  303. Science

    What are 5 facts about heat?

    asked by Lewis
  304. Science

    How did living organisms shape our current atmosphere? How did free oxygen eventually begin to accumulate in the atmosphere? What was the role of photosynthesis.

    asked by Robin
  305. 103 inf

    What type of strategies can educators use to ensure their students are not “flaming”

    asked by meshelle
  306. Social Studies

    The First Amendment does not guarantee absolute freedoms or rights Why?

    asked by Britt
  307. math

    arraange the following numbers in order from least to greatest:2 1/4, 0.6, 2.75, 40%, 7/5

    asked by kamal
  308. physics

    a ball is thrown at an original speed of 8.0 m/s at an angle of 35 degrees above the horizontal. What is the speed of the ball when it returns to the same horizontal level?

    asked by Anonymous
  309. Algebra

    I am trying to solve (2*(c^4)*2*(a^6))/(2*(a^10)) but the answer I am getting is 2c^4a^4. Do you know if this is correct?

    asked by David
  310. math

    three out of 20 students have been to the zoo. what percent of students have been to the zoo? i put 6%. is that right?

    asked by kamal
  311. algbra

    t = r + k/2(w) What does w equal?

    asked by Lynn
  312. physics

    An arrow is shot vertically upward and then 2.15 s later passes the top of a tree 37.0 m high. How much longer will the arrow travel upward, and how high will it go?

    asked by Jamie
  313. math

    one angle in a triangle is half the largest and three time the smallest what are the three angles

    asked by larry
  314. chemistry

    On a trip you travel 308km in 3.5h and use 32L of gasoline. A) What is your average speed in km per hour? B)What is your gas mileage in miles per gallon?

    asked by Twynna
  315. algebra2

    how do you factor this completely? 105x6y2z3 - 98x4y3z2 + 84x3y4z5

    asked by janelle
  316. English

    What is Protagonist in the sniper?

    asked by Michaela
  317. chemistry

    What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???

    asked by Kim
  318. chemistry

    What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???

    asked by Kim
  319. US History

    What role did religion play in early European efforts at overseas colonizations?

    asked by korrissa
  320. History

    Why is it important to learn about the government?

    asked by Hannah
  321. algebra2

    how do you factor 15Rx - 3Rex

    asked by janelle
  322. Organic Chem (URGENT)

    What is the monomeric unit of a chain of molecules joined by peptide bonds? Answer:?? If anyone can help with this question. Thank you very much.

    asked by John
  323. Algebra

    Lee took a survey for the school newspaper and received the following data about the number of hours classmates studied per week: (1,2,4,5,6,8,9,10,10). Express as a common fraction the positive difference between tthe median and mean of this set of data.

    asked by Tom
  324. algebra2

    how can you factor this? x2 + 25

    asked by janelle
  325. Algebra

    Two angles of a triangle measure 55 degrees and 47 degrees. What is the number of degrees in the measure of the supplement of the remaining angle of the triangle?

    asked by Laur
  326. ALGEBRA

    A cube has a volume of 64 cubic units. How many units are in the sum of the lengths of all it's edges?

    asked by Sam
  327. chemistry

    In this activity, why should there be no individual atoms left over that were origionally part of a reactant molecule?

    asked by Anonymous
  328. writing

    can you unscramble eratyleh

    asked by s.matt
  329. math

    two fractions equivalent to the given factor 8/14

    asked by vampy
  330. algebra

    Please help me simplify this function? f(x)=-4(x-3)^3(x+1)^2

    asked by Marie
  331. pre algebra-math

    two fractions equivalent to the given factor: 1) 18/21 2)3/17 thank you so much if u helped me

    asked by .please please please help
  332. Algebra

    Can you help with the following equation? x-2 x-2 ------ x(2)-2x -2x+4 ---------- x(2)-4x+4

    asked by Tavia
  333. Math

    Solving First degree equations. 0.2x-0.3=0.1x+5 I am having a hard time entering this into my TI-84

    asked by Lisa
  334. English 11

    Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his time--in short, describe him so

    asked by NEEDhELP
  335. 5th math

    look at the number of leters robin sorted at her job at the post office. what is the mean number of letters sorted? day------letters sat. 105 Mon. 97 Tues. 88 Wed. 86 please! show me how to do this problem.thanks!!

    asked by pat
  336. Physics I NEED HELP!!!

    of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees

    asked by Erica L
  337. Physics I NEED HELP!!!

    of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees

    asked by Erica L
  338. English 11

    Type a character sketch of a fictional Southern Gentleman named Alphonzo Carteret, following the instructions given for the character sketch of the Puritan above.

    asked by NEEDhELP
  339. English 11

    What did the term grace mean to the Puritan and how did it shape his life?

    asked by NEEDhELP
  340. algebra

    scientific notation 0.8775

    asked by Anonymous
  341. algebra

    scientific notation 0.8775

    asked by Anonymous
  342. physics

    what is the formula to calculate the following: how much force is needed to move a 10 pound block 10 feet in 8 seconds>

    asked by steve
  343. Finite Math

    Assume that you have a total of 15 people on the committee: 5 black males, 5 black females, 1 white male, and 4 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the

    asked by Amanda
  344. Business

    Hey guys. I really need your help picking out a new business name. Which do you like/find catchier??? The business is a local "swapping" online site. Thanks a lot. SwapEm Swap Ventures SwapEm Local

    asked by Matt
  345. Chemistry

    After removing a crucible (containing CaCO3 obtained as a precipitate) from an oven, what could you do (if you were being extremely careful and had enough time) to prove that the CaCO3 is dry?

    asked by Jason
  346. maths

    Hello I'm stuck on this question here it is x² + 3x - 6.75 = 0 So what does x equal to ?

    asked by Anonymous
  347. public relation

    what has the result of what the artist Chris Brown led for the public to say or view him?

    asked by kate
  348. UNO

    A blood sample contains several different types of cells, each of which contains different combinations of specific ions and molecules. The cells are suspended in water, and the water also contains many molecules and ions. Which term or terms could be used

    asked by henry
  349. Math

    sole for the variable s r=2s - 8

    asked by Justin
  350. Physics

    A moving object has a kinetic energy of 146 J and a momentum of 23.4 kg·m/s. a) Find the speed of the object. Answer in units of m/s.

    asked by Michael N.
  351. statistics

    what is average for the following numbers 65 49 24 15

    asked by ash
  352. chem

    Under what conditions does water boil at exactly 100 degrees Celsius?

    asked by marie
  353. Algebra 1

    Find an equation of the line containing the given pair of points. (1/4,-1/2) and (3/4,5). What is the equation of the line? y= Thank you for all your help.

    asked by Esther
  354. Math

    Solve for w V= lwh

    asked by PLEASE HELP
  355. algebra

    British sterling silver is a copper-silver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 170 grams of a copper-silver alloy that is 16% copper by weight?

    asked by aaaa