Questions Asked on
December 13, 2010

  1. Physics

    At a rock concert, the sound intensity 1.0 in front of the bank of loudspeakers is 0.10 . A fan is 30 from the loudspeakers. Her eardrums have a diameter of 8.4 .How much energy is transferred to each eardrum in one second?

    asked by Ness
  2. Physics

    A 1125 kg car carrying four 80 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude when its speed is 17 km/h. The car now stops,

    asked by Robert
  3. physics

    1.) A vertical spring with a spring constant of 450 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest. It collides with and sticks to the spring, which is compressed 2.5 cm in bringing

    asked by David
  4. Trig

    How do you convert rectangular equations into polar equations? If x4−y4=xy , then r2=atan(b); What is a? What is b?

    asked by Audrey
  5. geometry

    if triangle FGH~ to Triangle PQR, FG = 6, PQ = 10 and the perimeter of trinagle PQR is 35 find the perimeter of triangle FGH

    asked by Chris
  6. math 11

    i dontget how the textbook got the answer, h = -30cos[(1.43)x]° + 40 the question is: a paintball is shot at a wheel of radius 40 cm. the paintball leaves a cricuarmark 10 cm from the outer edge of the wheel. As the wheel rolls, the mark moves in a

    asked by pranav
  7. calculus

    Find the point P in the first quadrant on the curve y=x^-2 such that a rectangle with sides on the coordinate axes and a vertex at P has the smallest possible perimeter.

    asked by Gabriela
  8. physics

    a popgun uses a spring for which k = 20 N/cm. when cocked, the spring is compressed 3.0 cm. how high can the gun shoot a 5.0-g projectile

    asked by Mike
  9. Physics

    A 16kg child on roller skates rolls 2m down an incline at 20 degrees with the horizontal. With no friction, what is the total kinetic energy of the child at the bottom of the incline?

    asked by Josh
  10. chem

    Excess fluorine, F2(g), reacts at 150°C with bromine, Br2(g), to give a compound BrFn. If 423 mL Br2(g) at 150°C and 748 mmHg produced 4.20 g BrFn, what is n? Predict the shape of this molecule using the VSEPR model.

    asked by chemistry
  11. prob. statistics

    a survey indicates that 41% of women in the us consider reading as their favorite leisure time activity. you randomly select 4 women and ask them if reading is their favorite leisure time activity. find the probability that exactly 2 of them said yes

    asked by tiffany
  12. C Chemisty

    What mass of hyudrogen peroxide should result when 1.50 g of barium peroxide is reacted with 25.0 mL of 0.50 M of hydrochloric acid?

    asked by Sandra
  13. physics

    A coin is placed on a vinyl stereo record that is making 78 revolutions per minute on a turntable. Find the magnitude of the acceleration when the coin is placed 5.0, 10, and 17 cm from the center of the record. The radius of Earth is about 6.38x10^3 km. A

    asked by Becky
  14. Math

    2.) Bonnie is four years older than Clyde. Ten years ago she was twice his age. How old is Bonnie?

    asked by Sherkyra8645
  15. Chemistry

    What is the percentage strength (v/v) of Diluted Alcohol, NF, which results from mixing 50 mL of Alcohol, USP (95.0%, v/v) with 50 mL of Purified Water, USP? C1xV1 = C2xV2 95% x 50ml = C2 x 97ml C2 = 49% This was an example my professor put up. I can not

    asked by Anonymous
  16. college

    The approximate vapor pressure of CS2 at 30 degrees Celsius?

    asked by Helen
  17. 11th grade pre ap physics

    An athlete whirls a 7.00 kg hammer tied to the end of a 1.1 m chain in a horizontal circle. The hammer makes one revolution in 0.9 s. What is the tension in the chain?

    asked by asian
  18. physics

    a ball mass 800g is dropped from height of 5m and rebounds to a hight of 3.8m the air resistance is negligible. calculate a. the kinetic energy of the ball just before impact b. the initial rebound speed of the ball c. the energy transferred to the ground

    asked by lewis
  19. physics

    The radius of Earth is about 6.38 103 km. A 7.40 103 N spacecraft travels away from Earth. What is the weight of the spacecraft at the following distances from Earth's surface?

    asked by Anonymous
  20. physics

    A hypothetical planet has a radius 2.1 times that of Earth, but has the same mass. What is the acceleration due to gravity near its surface? What equation should i use?

    asked by Haley
  21. english

    In the memoirs, “Barrio Boy” and “No Gumption”, how are these two memoirs similar? How are they different? In what ways are the authors’ choices and depictions related to the subject matter of their stories? pleeeaaaasssseee helpp.

    asked by Vanna
  22. AP World History

    how did the japanese importation of chinese culture differ from that of vietnam and korea? Are these points correct? +++ Japan had a strong religion, Shintoism, while Viet. and Korea did not +++ Japan was the only place not physically connected to the

    asked by qwerty321
  23. math

    during the summer months, sarah makes and sells necklaces on the beach. last summer she sold the nacklaces for $10 each. Her sales averaged 20 per day. Considering a price increase, she took a small survey and found that for every dollar increase, she

    asked by ted
  24. physics

    (a) Find the pressure difference on an airplane wing where air flows over the upper surface with a speed of 126 m/s, and along the bottom surface with a speed of 101 m/s. kPa (b) If the area of the wing is 30 m2, what is the net upward force exerted on the

    asked by aok
  25. chemistry

    Determine the molarity of nitrate ions in a solution prepared by mixing 25.0 mL of 0.50 M Fe(NO3)3 and 35.0 mL of 1.00 M Mg(NO3)2 Please explain fully do not know where to start?

    asked by Lisa
  26. Physics

    A train sounds its horn as it approaches an intersection. The horn can just be heard at a level of 42 dB by an observer 10 km away. (a) What is the average power generated by the horn? W (b) What intensity level of the horn's sound is observed by someone

    asked by Jake
  27. geometry

    The sum of the measures of the interior angles in a polygon is 540 degrees. How many sides does the polygon have?

    asked by Carl
  28. Math

    Ruth is flying a kite. Her hand is 3 feet above ground level and is holding the end of a 375 foot long kite string, which makes an angle of 64° with the horizontal. How high is the kite above the ground? (Round your answer to one decimal place.)

    asked by Anonymous
  29. physics

    Two equal masses are attached to separate identical springs next to one another. One mass is pulled so its spring stretches 20 {\rm cm} and the other is pulled so its spring stretches only 10 {\rm cm}. The masses are released simultaneously.Which mass

    asked by leya
  30. Physics

    A car moves from a point located 26.0 m from the origin and at an angle of 35.0° from the x-axis to a point located 56.0 m from the origin and at an angle of 60.0° from the x-axis in 2.50 s. What is the magnitude of the average velocity of the car?

    asked by JT
  31. chemistry........help!! =)

    How many grams of FeSo4 are required to prepare 0.50 L of a 0.010 M FeSO4 solution? I don't need the answer just shown how to do it! thanks

    asked by Stacy
  32. phycis

    A cylindrical tank has a tight-fitting piston that allows the volume of the tank to change. The tank contains 0.5m^3 of air at a pressure of 2*10^5 Pa. The piston is slowly pushed in until the pressure of the air is increased to 2.5*10^5 Pa. If the

    asked by joann
  33. Chemistry-inorganic

    Explain the discontinuity in the trend for the first ionization energies between Mg and Al, also P and S.

    asked by Davia
  34. Physics

    An airplane of mass 1.3 104 kg is moving at 64 m/s. The pilot then revs up the engine so that the forward thrust by the air around the propeller becomes 7.2 104 N. If the force exerted by air resistance on the body of the airplane has a magnitude of 4.0

    asked by Jane
  35. chemistry

    10.2 g of Pb(NO3)2 are dissolved in 100 mL of water, and added to 250.0 mL of a 0.250 M solution of KI. Determine the mass in grams of Pbl2 produced, and find the number of moles of the excess reagent. PLZ explain

    asked by Lisa
  36. physics

    a 500-g mass is attached to the end of an initially unstretched vertical spring for which k=30 n/m. the mass is then released, so that it falls and stretches the spring. how far will it fall before stopping? (the PEg lost by the mass must appear as PEe)

    asked by Mike
  37. physics

    A person fishing hooks a 3.0-kg fish on a line that can only sustain a maximum of 35 N of force before breaking. At one point while reeling in the bass, it fights back with a force of 45 N. What is the minimum acceleration with which you must play out the

    asked by Anonymous
  38. physic

    Two equal masses are attached to separate identical springs next to one another. One mass is pulled so its spring stretches 20 cm and the other is pulled so its spring stretches only 10 cm. The masses are released simultaneously.Which mass reaches the

    asked by leya
  39. Government

    A bill has been approved in the House and Senate, albeit in slightly different versions. The bill now goes to ??

    asked by Margaret
  40. physics

    In 37.0 s, a pump delivers 552 dm3 of oil into barrels on a platform 29.0 m above the pump intake pipe. The density of the oil is 0.82 g/cm3. (a) Calculate the work done by the pump. (b) Calculate the power produced by the pump

    asked by candace johnston
  41. Science

    If 20.0 mL of 0.42 M acetic acid (CH 3COOH) is added to 10.0 mL of 0.42 M sodium acetate (CH 3COONa) solution, what is the pH of the resulting solution? (K = 1.8 x 10-5)

    asked by Mik
  42. Algebra 1

    Let x be an integer. What is the product of twice the integer added to three times the next consecutive integer?

    asked by Lauren
  43. Chemistry

    In the reaction: MnO2 + 4 HCl ---> MnCl2 + Cl2 + 2 H2O Calculate: The volume of Cl2 produced from the reaction of 10 grams of HCl with excess MnO2?

    asked by Darryl
  44. Statistics and Probability

    The Tri-State Pick 3 lottery game offers a choice of several bets. You choosea three-digit number. The lottery commision announces the winning three-digit number, chosen at random, at the end of each day. The "box" pays $83.33 if the number you choose has

    asked by Laura
  45. physics

    A person fishing hooks a 3.0-kg fish on a line that can only sustain a maximum of 35 N of force before breaking. At one point while reeling in the bass, it fights back with a force of 45 N. What is the minimum acceleration with which you must play out the

    asked by Anonymous
  46. Algebra-Did I even begin correctly?

    How would I write log(6)27-2log(6)3 as a single logarithm Would I start by getting rid of the (-2)- I know its the same log6 but what would I do with the 27 and the 3 I'm really confused on this one and I have to solve several similar ones with no clue on

    asked by Matt
  47. chemistry

    The solubility of nickel (II) carbonate at 25 degrees C is 0.047 g/L. Calculate Ksp for nickel (II) carbonate.

    asked by joe
  48. 11th grade

    how far will 350 j raise a 7 kg mass

    asked by taylor
  49. Chemistry

    Given 20.0 L of ammonia gas at 5C and 730 torr, calculate the volume at 50C and 800 torr

    asked by Jack
  50. physics

    A 73 kg man in a 7.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with a radius of 1.0 cm, and find the pressure exerted on the floor by each leg.

    asked by kaitlyn
  51. US History

    For decades, America has been locked in hostile confrontation with the two great Communist powers, the Soviet Union and the People's Republic of China. We were engaged with the one at many points and almost totally isolated from the other, but our

    asked by Anonymous
  52. Precalculus

    A tower casts a 235-foot-long shadow. If the angle of elevation from the tip of the shadow to the top of the tower is 66.3°, how high is the tower?

    asked by Mike
  53. chemistry

    An ionic compound has the following composition (by mass): Mg, 10.9%; Cl, 31.8%; O, 57.3%. What is the formula and name of this compound?

    asked by chemistry
  54. chemistry

    Based on molecular mass and boiling point of the five compounds in the table below, which should have the high? est dipole moment: first # molecular mass 2nd: boiling point compound 1 244 203 compound 2 346 255 compound 3 250 138 compound 4 246 146

    asked by ben
  55. physics

    A piece of glass has a temperature of 72.0 °C. Liquid that has a temperature of 37.0 °C is poured over the glass, completely covering it, and the temperature at equilibrium is 50.0 °C. The mass of the glass and the liquid is the same. Ignoring the

    asked by Help
  56. math

    If the cards contain the following equations, what is the probability that a student will graph a line whose slope is 3? 3y = 9x + 3 x(x + 3) = 0 3x + y = 0 x = 3y x2 + 3 = 0 y - 3x = 0

    asked by neisha
  57. statistics

    Suppose that a coin is tossed 100 times. Let X be the number of times that it shows heads. Find the mean and standard deviation of X.

    asked by Mschribe
  58. Sociology

    What effect do you think the Kent State shootings had on the Anti-Vietnam movement in America?

    asked by Lakesha
  59. CHEMISTRY

    how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions? well normally you go moles=grams/molar mass than M= moles/L but when looking for grams? what do you do........multiple .250 by .100 than divide

    asked by STACY
  60. chemistry

    Consider the hypothetical elements X and Y. Suppose the enthalpy of formation for the compound XY is -336 kJ/mol, the bond energy for X2 is 414 kJ/mol, and the bond energy for Y2 is 159 kJ/mol. Estimate the XY bond energy in units of kJ/mol.

    asked by Jude
  61. 10th grade math help

    How do you solve? 3-3sinx-2cos^2(x) = 0

    asked by Sophie
  62. Math Help in need of urgent assistance

    A tower casts a 235-foot-long shadow. If the angle of elevation from the tip of the shadow to the top of the tower is 66.3°, how high is the tower? (Round your answer to one decimal place.)

    asked by Jess
  63. Algebra

    How do I start to solve -2log8(x+1) = -8? I think -2log8(x+1) is log8^(x+1)to the 2nd but then what do I do because then I think I should do log-8/log8 = x+1)^2 but that doesn't work at all Thank you for any help you can give

    asked by Anna
  64. science

    A surveyor stands on one edge of a ravine. She determines that the ravine w is 140 feet wide. She then determines that the angle of depression from the edge where she is standing to a point on the bottom of the ravine a is 57.5°, as shown in figure below

    asked by Mary-ann
  65. physicis

    How much power does it takes to do 104 J of work in 8 seconds

    asked by Andy
  66. chem

    A molecular compound is composed of 58.8% Xe, 7.2% O, and 34.0% F, by mass. If the molecular weight is 223 g/mol, what is the molecular formula? Draw the correct Lewis structure. Predict the molecular geometry using the VSEPR model.

    asked by chemistry
  67. Precalculus

    1. A plane takes off, making an angle of a = 17° with the ground. After the plane travels m = one mile along this flight path, how high (in feet) is it above the ground?. (Round your answer to one decimal place.)

    asked by Anonymous
  68. grammar

    Choose the sentence that's written in the passsive voice. A. To Kill a Mockingbird was written by Harper Lee. B. Watch for the turn at the corner of the block. C. Alan and James know how to tell a story. D. The president was trying to develop his country's

    asked by Meosha
  69. Physics

    A 220 kg wooden raft sits on a lake. When a 75 kg man stands on the raft, it sinks 4 cm deeper into the water. When he steps off, the raft vibrates for a while. a) What is the frequency of the raft? b) What is the total energy of the vibration?

    asked by Anonymous
  70. Math

    In a twelve-team bowling league, if every team plays every other team four times during the season. How many games must be scheduled?

    asked by Jay
  71. AP World history

    What were the elements of the tang-Song economic prosperity? i looked in my book but I cannot find enough information. Please and Thank you.

    asked by qwerty321
  72. Math

    1). In 1968, vehicle emision standards allowed 6.3 hydrocarbons released per mile driven. By 1980, the standards allowed only 0.41 hydrocarbons per mile driven. What was the rate of change from 1968 to 1980?

    asked by Sherkyra8645
  73. Chemstry

    A 5.00 gram mixture of CaO and CaCO3 is heated strongly. After heating, the mixture has a mass of 4.00 grams. What % of the original mixture is CaCO3?

    asked by Paul
  74. world history

    why did the united states seek to become a world power in the 1890'S?

    asked by danny
  75. Precalculus

    A surveyor stands on one edge of a ravine. She determines that the ravine w is 140 feet wide. She then determines that the angle of depression from the edge where she is standing to a point on the bottom of the ravine a is 57.5°, as shown in figure below

    asked by Anonymous
  76. Chemistry

    Element M(a solid) reacts with an aqueous solution of compound B to form an aqueous solution of compound C(a salt) and a gas composed of element D. When 1.000g of element M is reacted with excess oxgen 1.658g of the compound MO are formed. Compound B is

    asked by Patrick
  77. prealgebra

    find the total amount in the compound interest amount. $6350 is compounded semiannually at a rate of 18% for 16 yrs. (round to the nearest hundredth as needed)

    asked by sarah
  78. chemistry

    Compare the three types of bonds based on valence electrons. Explain why S-H bond lengths are longer than O-H bond lengths. Which element has a greater bond energy, oxygen or nitrogen and why. Determine if the following compounds are likely to have ionic

    asked by mido
  79. science

    Chapter 1 & 2 Review Questions 1. Compare and Contrast the two main branches of physical science. 2. Distinguish between scientific laws and scientific theories. 3. Describe the steps of the scientific method. 4. Explain the objective of a consistent

    asked by jack
  80. Cell Biology

    What do the two steps of transcription followed by translation do?

    asked by Lindsay
  81. economics 212

    Which of the following pairs are examples of substitutes? a. popcorn and soda b. automobile and bicycles c. boats and fishing tackle d. wine and cheese

    asked by Anita fields
  82. Chemistry

    A protein found in some types of wood-rotting fungi is 0.40% copper by mass. Each protein molecule is known to contain 4 copper atoms. What is the approximate molecular weight of this compound?

    asked by Dee
  83. math

    Lily went for 8 rides at the county fair. Some rides were on the merry-go-round, and the rest were on the pirate ship. The total cost of all rides was $6.30. Each pirate ship ride cost $0.60, and each merry-go-round cost $0.90. How many pirate ship did

    asked by Katherine
  84. maths

    How do i rearrange the equation to make d the subject. e = d/ab (d/ab has a square root sign over it)

    asked by joleen
  85. algebra

    there are people walking their dogs at a park. There are 30 heads and 68 feet at the park. Write out the algebraic equations for this problem. Use P to stand for the number of people and D to stand for the number of dogs.

    asked by mary
  86. chem

    A gaseous compound has the following composition by mass: C, 25.0%; H, 2.1%; F, 39.6%; O, 33.3%. Its molecular weight is 48 g/mol

    asked by chemistry
  87. math

    Lily went for 8 rides at the county fair. Some rides were on the merry-go-round, and the rest were on the pirate ship. The total cost of all rides was $6.30. Each pirate ship ride cost $0.60, and each merry-go-round cost $0.90. How many pirate ship did

    asked by Katherine
  88. slope algebra

    given ab and its midpoint m. the coordinates of a are (-10,-3) and the coordinates of M are (-4,-1) a. find the coordinates of B. b. find the slope of am. c. find the slope that is perpendicular d. find the slope that is parallel e . write the equation of

    asked by SKipper
  89. Chemistry

    Hi, I'm trying to solve some chemistry problems, like the ones my teacher says will appear on our exams. The problem reads like this: What is the hydrogen conentration in a bleach sample that register 9.55 using a pH meter? My Attempt: Since this sample

    asked by Cliff
  90. ENGLISH

    WHAT ARE THE METAPHORS IN THE POEM "THE RISK" BY ANNE SEXTON

    asked by JEANELL
  91. CHEMISTRY

    Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (c) molarity assume the density of the solution is equal

    asked by STACY
  92. Physics (Final Review)

    Ok so tomorrow is my Physics final and I have so much depending on this one test ( all my other grades are 80 and above but this one is a low 70). I have studied for the final but if anyone could supply me with a list of most know formulas for physics I

    asked by Pablo
  93. chem class

    Our teacher told us we had to do problems on our final on Delta G and S...? all he said is we'd have to plug in numbers from a list and solve. but im very confused. but the numbers he gave in the example are different from my book, is there soemthing we

    asked by ben
  94. Aims Math

    what is the contrapositive of this statement "If two polygons are congruent, then they are also similar"

    asked by angel
  95. Calculus AB

    Analyze the function ln x=cx^2 to find the unique value of c such that there is exactly one solution to the equation. To do this find the value of c such that both sides of the equation have equivalent slopes at some point; this will give you a proper

    asked by jessica
  96. physics

    a piece of iron has a temperature of 18 degrees celsius. A second identical piece of iron is twice as hot. What is the temperature of the second piece of iron? Please explain why.

    asked by Sonia
  97. chemistry

    Consider the hypothetical elements X and Y. Suppose the enthalpy of formation for the compound XY is ƒ{336 kJ/mol, the bond energy for X2 is 414 kJ/mol, and the bond energy for Y2 is 159 kJ/mol. Estimate the XY bond energy in units of kJ/mol.

    asked by chemistry
  98. 11th grade

    If 720.0 mL of liquid water absorbs 80.0 kJ of heat, what will be its increase in temperature?

    asked by Anonymous
  99. Chemistry

    Normal saline solution is 0.91%w/v Calculate thge concentration of this solution in grams per litre????

    asked by Korina
  100. college maths

    Find the LCD and add the fractions. 1/125 + 4/50= 11/24 1/1250 1/35 551/6250 (Points: 5) im not getting the concept of this some help is really needed please

    asked by lisa
  101. Physics and chemistry

    Chapter 1 & 2 Review Questions 1. Compare and Contrast the two main branches of physical science. 2. Distinguish between scientific laws and scientific theories. 3. Describe the steps of the scientific method. 4. Explain the objective of a consistent

    asked by mido
  102. calculus

    the tangent line to the curve y=1/3(x^3)-3x^2+11x+15 is parallel to the line 9x-3y=2 at two points on the curve.Find the two points.

    asked by Joseph
  103. math 11 - Ms. Sue i need your kind help

    i dontget how the textbook got the answer, h = -30cos[(1.43)x]° + 40 the question is: a paintball is shot at a wheel of radius 40 cm. the paintball leaves a cricuarmark 10 cm from the outer edge of the wheel. As the wheel rolls, the mark moves in a

    asked by pranav
  104. Business Management

    Pick a team that you are currently a member of, a prior team in which you were a member, or search the Internet for an example of a real-life team. Be sure to choose one that meets these two criteria: (1) it’s not part of a for-profit business and (2)

    asked by Ronald
  105. 11th grade

    If 720.0 mL of liquid water absorbs 80.0 kJ of heat, what will be its increase in temperature?

    asked by Anonymous
  106. Math

    my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. i know that you start it/set it up like this: c(10,2)c(2,1) divided by c(22,4) and i can get the

    asked by Katia
  107. Math

    I am a 5-digit whole number. I have 4 different digits. There are no 7s or 5s and I only have one 2. My hundreds digit is the least. My tens digit is odd and is the sum of all the other digits. What number could I be?

    asked by Travis
  108. Finance

    A U.S.-based firm is planning to make an investment in Europe. The firm estimates that the project will generate cash flows of 200,000 euros after one year. If the one-year forward exchange rate is $1.40/euro and the dollar cost of capital is 9%, what is

    asked by KEVIN
  109. MATH

    FIND THE DIAMETER AND CIRCUMFERENCE OF A CIRCLE THAT HAS A RADIUS OF 1.7 USE 3.14 FOR PI

    asked by MASON
  110. english

    1. The element of argumentation that deals with the listeners desire to trust and believe in the speaker is called a. ethos b. pathos c. logos d. mythos One element of argumentation involves an appeal to the logical and rational side of human beings. This

    asked by jennifer
  111. Math

    my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. so i know how to start it c(10,2)c(2,1) ---------- c(22,40 but how do you solve that ?

    asked by Katia
  112. 4th grade

    what is 27×19 in expanded algorithm?

    asked by samantha
  113. math

    fill in the blanks with the numbers so that the statement is true 2,3,4,7 (_ + _)2 + _ x _ = 53

    asked by kevin
  114. math third grade

    There are 40 people at a picnic. There are 4 more children than adults. How many of each are there?

    asked by Gab
  115. Chemistry

    All amino acids (choose the correct choice) a) have the same side chains b) form zwitterions c) have the same isoelectric points d) show hydrophobic tendencies e) are essential amino acids

    asked by Lindsay
  116. physicis

    How far will 350 J raise a 7kg mass?

    asked by Andy
  117. geometry

    How do I figure out the dimensions of each room in a 1200 square foot house with a closet and bathroom the same size, a big family room, and two circular bedrooms?

    asked by avery
  118. Math

    3). Sam rows up a river to camp in three hours. The next day he makes the return trip downstream in one hour. If he can row two mph in still water, how fast is the current?(The question was not answered last time).

    asked by Sherkyra8645
  119. CHEMISTY

    Determine the molarity of sodium cations in solution when 6.21 g of sodium sulflate are mixed with 2.97 g of sodium nitrate in pure water to produce 350.0 mL of solution.......please explain every step. thanks!

    asked by Jenni
  120. Math

    4). At diving competiotion, Jan's first dive received 9 scores that averaged 9.0. To calculate her final score for the dive, the highest and lowest scores were removed and the average was taken of the remaining seven scores. If her final score was 9.1,

    asked by Sherkyra8645
  121. english- need a creative title!

    For my english class i had to right a paper on civil war slang and how this topic releated to the book The Red Badge of Courage. I finished my paper but have no idea of a creative title. Im not good at thinking up good titles :/ have any ideas?

    asked by hannah
  122. question about corrections(what they mean)

    ok. so this may be hard to explain and may not be enough info that you understand but ill try. I did a paper and my teacher corrected it and said changes i need to make. here is a clip from the paper of something that she commented on: " Here are some

    asked by hannah
  123. English - Fools Crow

    Hello! Has anyone read the novel Fools Crow by James Welch? I just need your personal opinions on the question: Does the novel also rewrite the dominant history? This is not my homework. I am not a student I am just discussing this book with some people

    asked by marky
  124. 7th grade

    A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling towards mars at a arate of 127 meters per second, how many hours will it take the probe to reach the surface of the plant? Round to

    asked by Amber
  125. geometry

    if in a parallelogram ABCD, m angle b=8x-25 an m angle c=7x+55 how do i solve this probblem

    asked by Mitchi montanna
  126. statistics

    Suppose you have a data set that is normal and with a mean of 78 and a standard deviation of 9. Within what range would you expect to fine 95% of the data?

    asked by Razz
  127. Polynomial

    Create a polynomial that describes the perimeter of the outside figure: x + 8, 5, x, x, 2x, x + 8, 34 and inside figure: x + 12.

    asked by Judith
  128. Physics

    How do you determine the average velocity on a position-time graph?

    asked by pooja
  129. science

    explain what will happen to butter taken out of the refrigerator and placed in a 38 degrees celsuis room?

    asked by Brenda
  130. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

    asked by Monty
  131. Math

    In "the twelve days of christmas", how many gifts in all did "my true love give to me?

    asked by Jay
  132. Calculus

    Consider the function f defined by f(x)= sin x/x, x cannot equal 0 1, x cannot equal 0 a) At what points does the graph cross the X-axis? b) What is the relation between f(x) and tan x at points x cannot equal 0 at which f(x)=0? c) What is the behavior of

    asked by Nikki
  133. Chemistry

    Which one pair has the larger radius?Explain? a. Calcium atom or calcium ion b. Aluminum ion or Magnesium ion

    asked by Anonymous
  134. math

    how would you write 0.316 in expanded form

    asked by Anonymous
  135. Trig

    A curve with polar equation r=(8)/7sinx + 36cosx represents a line. This line has a Cartesian equation of the form y=mx+b ,where m and b are constants. Give the formula for y in terms of x . For example, if the line had equation y=2x+3 then the answer

    asked by Audrey
  136. psychology

    What comparisons can you make between psychoanalytical models and functionalism? Select one topic from each and tell why you don't support it. Select one topic from each and explain why you do support it.

    asked by Nicke
  137. Chemistry-Confused by titration!!

    If a 28 mLs of a 0.25 molar NaOH solution is used to titrate 14 mLs of a nitric acid to its phenolphthalein endpoint, what is the molar concentration of the acid?

    asked by Maddy
  138. computers

    What ideas can you propose for the future of processor design? What do you think the limit of clock speed for a processor will be? How could a CPU communicate more quickly with memory? What could future cache designs look like? I've been looking in Google

    asked by Confused
  139. Physics

    A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At

    asked by Ann
  140. math

    Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41.

    asked by Mary-ann
  141. 11th grade

    20xsquared+40 x+15=0

    asked by bob
  142. 5th grade

    jen and heather went to lunch. when the bill came, jen discovered she had only$6. luckily, heather had enough money to pay the other part, or three fifths. how much did heather pay? how much was the bill?

    asked by eddie
  143. college

    Tace the impulse, listing the steps in as much detail as possible, from which your brain sends the message to the approprirate muscles to lift a glass of water to drink. As in the previous Application Assignment, detail the steps involved in the

    asked by hooper
  144. hum 176

    Choose a form of popular media that you are passionate about. The media may be music, a book, or a movie. · Write a thesis sentence stating how and why it is more than just a piece of entertainment. The thesis must include why it is a legitimate form of

    asked by vanessa
  145. chemistry

    a 52.0 gram sample or water increases in temperature due to the addition of a hot metal from 17.7 degrees C to 24.4 degrees C. How many calories has the water absorbed? how many calories did the metal lose?

    asked by ashley
  146. Geometry

    how would solve this inequality 106>19p+6+6p

    asked by Sonshine
  147. Windows 7

    Is there anybody who understands the Windows 7 system and some of its problems? I'm having a tough time with Control Panel because it takes a REALLY long time to load, and it should load for a second. I may have to uninstall some programs and/or delete

    asked by AL 92
  148. Math

    Andy was on his way to a marble tournament when he met Bob. Andy's bag of marbles was heavy, so he gave Bob 1/2 of his marbles plus 2. Then he met Alex and gave him 1/4 of his remaining marbles plus 5. Just before arriving at the tournament, he met Emily

    asked by Anonymous
  149. RSNHS

    What is the limit of 1-2x^2 -2cosx + cos^2x all over x^2? please answer ASAP. TY

    asked by monique
  150. math

    which has a greater area, a circular garden with a diameter of 20 meters or a square garden with sides with sides that are 20 meters long

    asked by crystal
  151. chemistry

    when 50 g of H2S reacts with 50 g of O2, how much SO2 will it produce?

    asked by John
  152. Algebra-Reiny please explain this

    Hi Reiny, I posted this problem earlier and you responded but I don't get the reasoning- The problem was -2log8(x+1) = -8 you said multiply by -2 and then you put log8(x+1)=4(wasn't that dividing by -2) log8(x+1)^2 = 8 (how did you get to the power of 2

    asked by Anna
  153. English

    Can you please check these sentences for me, please? Thank you very much. 1) The Victorians fostered the ideas of racial superiority. They believed that race were divided by both physical and intellectual differences. 2)As a consequence, some races were

    asked by Franco
  154. math

    judy and ramey have 42 stuffed animals. judy has 12 fewer animals than ramey. how many animals does each girl have?

    asked by Anonymous
  155. Cost accounting

    each bill 1500 hours per year and receive pay of $100,000 each. Four paralegal work for the firm and each receives pay of $40,000 and works 2,000 hours per year. Overhead of $396,000 is anticipated, of which $300,000 is attorney support, and the rest is

    asked by joyce pettaway
  156. ap chemistry

    a gas has a pressure of 1.1 atm occupies a volume of 24 liters. What will the pressure be if the gas has a final volume of 19 liters at constant temperature?

    asked by tamara
  157. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

    asked by Monty
  158. Pharmacology

    Hi i need help on these two puzzle words. 1. Dropping of a liquid on or into a body part _ n _ t _ _ _ _ _ i _ _ [12 words] 2. A precise and detailed plan for the regimen of therapy for a patient _ r _ _ _ _ _ _ [8 words]

    asked by Anonymous
  159. Pharmacology

    Hi i need help on these two puzzle words. 1. Dropping of a liquid on or into a body part _ n _ t _ _ _ _ _ i _ _ [12 words] 2. A precise and detailed plan for the regimen of therapy for a patient _ r _ _ _ _ _ _ [8 words]

    asked by Anonymous
  160. Calc

    Find the integral of 2x/(x^2 + 6x + 13)dx

    asked by Erica
  161. 11th grade

    You push a 250 kg desk with a force of 800N. The coefficient of friction is 0.2. What is the acceleration of the desk?

    asked by Leonardo Figueroa
  162. APMEH

    What does the book mean when they say..."the nobles pushed to reserve appointments to the officer corps of the armies, the bureaucracies,the government ministries, and the church exclusively for nobles"? This is during the 18th century

    asked by Jessica
  163. math

    What two numbers have a product of 3.6 and a sum of 3.8?

    asked by william
  164. chemistry

    What is the boiling point of the solution in which you are going to cook spaghetti if it contains 51.0 g of NaCl dissolved in 1.30 L of water? Assume the density of water is 1.00 g/mL. Use molar masses with at least as many significant figures as the data

    asked by jim
  165. 11th grade

    Joe wants to draw a triangle.the lengths are 5cm,12cm,and 13cm. A:will joe be able to draw the triangle?why or why not?

    asked by Anonymous
  166. 8th grade math

    Greta is designing a page for the yearbook and needs to know the area of her 8 in. x 10 in. picture after she crops it. If she makes the length and width of the picture 5/8 of the original, how does the area of the picture change?

    asked by Elizabeth
  167. Physics

    Lisa drops a stone from a wall that is 7.00m from the ground. How long is the stone in the air?

    asked by pooja
  168. hisory

    Many historians argue that the vietnam war in Vietnam was a profoundly disillusioning experience for Americans. Would you agree? Did the Vietnam experience signal a fundamental shift in the American foreign policy? what have been the consequences for

    asked by ally
  169. 7th grade

    Okay, so what are the axiom names? (honors math) Should this go in the 8th grade place? Oh well...

    asked by Chloe
  170. Physics

    A stretched string fixed at each end has a mass of 41.0 g and a length of 8.80 m. The tension in the string is 41.0 N. Nodes Antinodes b.What is the vibration frequency for this harmonic?

    asked by Mary-ann
  171. Chemistry-pH problem

    If a weak acid has a dissociation constant of 6.4 x 10(-6), what is the pH of a solution of this acid in 0.10 molar concentration?

    asked by Maddy
  172. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

    asked by Monty
  173. college

    Describe your experience with credit and credit cards in a brief paragraph using at least five adverbs and five adjectives in your description. Bold the adverbs and underline the adjectives

    asked by Dickens
  174. chemistry

    Describe how a 250.0 mL aqueous solution of 1.50 M MgCl2 is prepared from a stock solution of 6.00 M MgCl2. ANSWER: Measure 62.5 mL of the stock solution into a container and dilute to 250.0 mL so what i need explained is where did 62.5 mL come from?

    asked by Stacy
  175. Physics

    A rocket moves upward, starting from rest with an acceleration of 35.0 m/s2 for 5.63 s. It runs out of fuel at the end of the 5.63 s but does not stop. How high does it rise above the ground?

    asked by Monty
  176. Math SOMEONE PLEASE PLEASE PLEASE PLEASE HELP

    Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41. (Do not use mixed numbers in your answers.) Okay for some reason I keep getting this problem wrong. For sin(θ) I put 9/41, but it's wrong. Could someone please tell what I did wrong.

    asked by Anonymous
  177. chemistry

    there is 4.5 grams of acetic acid in 100 ml of water. how many moles of acetic acid is that?

    asked by tiffany
  178. Business Math

    Margie earns $4598 monthly with adjustments to income. She is married and claims one withholding allowance. Find the federal tax withholding that is deducted from her monthly paycheck?

    asked by Joan Martin
  179. Finance

    How to build a 90% Confidence Interval for Profit (When price competitor Pc=5, Wage W=$11)

    asked by Cindy
  180. math 5TH GRADE

    Beth has 60 toy cars and trucks 75% of them are blue.How many are blue?

    asked by arjel
  181. Chemistry

    If you dilute 45.5 mL of 9.0 M Na3PO4 to a final volume of 200 mL, what is the final concentration in units of molarity?

    asked by Stevi
  182. college

    4y to the 5th power 81q to the 7th power ________________ X ___________________ 9q to the 2nd power 16y .

    asked by Anonymous
  183. college math intermediate alg

    4y to the 5th power 81q to the 7th power ________________ X ___________________ 9q to the 2nd power 16y .

    asked by kathy
  184. math

    which set is infinite? P = {positive numbers less than 60} Q = {whole numbers between 10 and 20} R = {intergers ge=reater than 18} S = {even numbers between 5 and 15}

    asked by Lisa
  185. ESL

    what are Advantages and disadvantages of "sports day"?

    asked by sweetie
  186. MATH please help!

    which set is infinite? P = {positive numbers less than 60} Q = {whole numbers between 10 and 20} R = {intergers ge=reater than 18} S = {even numbers between 5 and 15} P, Q, R, or S

    asked by Angel
  187. Linear Algebra, orthogonal

    The vector v lies in the subspace of R^3 and is spanned by the set B = {u1, u2}. Making use of the fact that the set B is orthogonal, express v in terms of B where, v = 1 -2 -13 B = 1 1 2 , 1 3 -1 v is a matrix and B is a set of 2 matrices

    asked by Kay
  188. Statistics

    How do I go about giving a definition for wages and wage earners in quantifiable measures. Need help!!

    asked by Tee
  189. Math

    write a number pattern for 8 starfish each has 5 arms.

    asked by Alexis
  190. algebra

    solve by graphing 2x+y=1 and x-y=2

    asked by Tami
  191. biology

    how are energy and enzymes involved in biochemical reactions

    asked by ajdgnajsdlgsdg
  192. college maths

    Ann and Grace mow the yard for $38 each mowing. During one summer they mowed 2 times and spent a total of $10 on gas. The girls split their earnings. How much did each girl receive? (Points: 5) $33 $38 $66 $76 this one is confusing its either C or D bt

    asked by lisa
  193. social studies

    How did the europeans settlers use the land and other mined resources?

    asked by panhia
  194. ALGEBRA/please help

    I must simplify this expression. Am I correct? -4[-25-(9-3)]. I first subtract within the parentheses first -4[-25-(-6)] -4-(-31) = 27

    asked by Jessica
  195. math

    Add. 2x/5 + 3x-1/x

    asked by yvonne
  196. ALGEBRA

    I believe this answer to be correct. Just need to know. -13

    asked by Amy
  197. geometry

    determine why Euler's formula continues to hold for the polyhedron formed by cutting corners off of an octahedron. a) for an octahedron V=__, F=__,E=__ b) when you slice off one corner of the octahedron, you (gain or lose)__ edges. C) therefore, the total

    asked by m
  198. math

    what fraction would you use to find 33 1/3% of 42

    asked by die pre-alg die!!
  199. marketing

    Calculate a forecast of the above demand using a 3- and 5-period moving average.

    asked by Anonymous
  200. history

    What were some of the economic issues that President Carter faced during his Presidency?

    asked by Anonymous
  201. social studies

    how did the european settlers use the land and other mined resources?

    asked by panhia
  202. Calculus

    dy/dx[tan(y)=x=y] in terms of y the answer my teacher got was cot^2(y) but i get is 1/[sec^2(y)-1] either i made a mistake, my teacher made a mistake or we're both right and i just need to simplify. please tell me which of the following is the case and how

    asked by dazed and confused
  203. inter med algebre

    these were extra credit quest to help grade but i could not do these i asked so many people there were stumped can who gets this ques can u do the whole promlem pleasw. Questin; Pick a car and finf its top speed . Assuming that your chosen carnreaches its

    asked by Linda P*
  204. medical terminology

    Could someone please check my answers. If they are wrong could you give me the correct answer or tell me where to find it..Thanks in advance for all your help... 1.Uremia is the result of A. electrolye imbalance in the intracellular body fluids. B. a high

    asked by PAT
  205. Pre-Calculus

    translate this polar equation into a rectangular form: rsin(2theta)=sin(theta) My answer: r2sin(theta)cos(theta)=sin(theta) 2rcos(theta)=1 2x=1 x=1/2 This is the only answer I can get and someone told me it's wrong. Would someone please help me with this

    asked by Sara
  206. math

    Find the age, to the nearest month, of the people in your class. Use the average age in months as your zero and positive and negative numbers to write the age of each person in relation to the average. Work in a group to find a good visual way to display

    asked by bb
  207. Math

    What is th evalue of x when y = 7 2 -3x +4y-1=0

    asked by Karri
  208. physics

    Why does a 10 gram bullet have more momentum traveling at 200m/s than at 20m/s?

    asked by Brianna
  209. Biology

    Which of the following is NOT found in the human central nervous system? A) hypothalamus B) forebrain (cerebrum) C) autonomic neurons D) medulla E) spinal cord

    asked by Bee
  210. college maths

    Translate and solve. A number n increased by 1/4 gives 1/9. Find n. (Points: 5) n=1/9 n= -5/36 n=1/36 n=1/18 is it B

    asked by lisa
  211. physics

    the rate at which position changes with time is called acceleration. true or false?

    asked by bryanna
  212. physics

    the rate at which position changes with time is called acceleration. true or false?

    asked by bryanna
  213. 8th grade math

    Can you please check my answer? A spherical balloon has a volume of 268 cubic cm. If more air is pumped in so that its radius is 3 times as long, what is its new volume? My answer: 2,412 cubic cm

    asked by Elizabeth
  214. physics

    what are the units for speed and gravity?

    asked by bryanna
  215. college maths

    Write as a product of factors; then find the product. (Points: 5) 0 90 675 150 I think the answer is C but im confuse any other opinions please?

    asked by lisa
  216. mathematics

    What is 5% of $1,500.00.

    asked by Anonymous
  217. english

    In this sentence, I think i need a comma after asking, right? When the communication was poorly understood,the nurse clarified the female patient's meaning by asking “I am not sure that I understand what you mean by 'depressed than usual’?"

    asked by blaze
  218. Precalculus

    Solve the triangle ABC under the given conditions. a = 19, b = 8.2, c = 12 A= B= C=

    asked by Johnathan
  219. math

    The volume of a ball is 288 pi cm^3. Find the dimensions of a rectangular box that is just large enough to hold the ball. use 3.14 for pie

    asked by cynthia
  220. social studies

    Why were their beliefs different?

    asked by panhia
  221. math

    Subtract. x+4x-1/3x - 2x+2/3x

    asked by yvonne
  222. physics

    - a 40 kf milk crate is placed on a 20◦ ramp. determine the force normal of the mil crate on the ramp.

    asked by Anonymous
  223. algebra

    Multiply. 2x-1/3x * x+1/2x

    asked by yvonne
  224. algebra

    Simplify. x^2+3x+2/x^2-2x-3

    asked by yvonne
  225. Math SOMEONE PLEASE PLEASE PLEASE HELP

    Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41. (Do not use mixed numbers in your answers.)

    asked by Mary-ann
  226. s.s

    what are the geography bee questions and answers of 2010

    asked by yuku
  227. Spanish III for Whitney

    I have a suggestion for you on the last post of Dec. 9. http://www.jiskha.com/display.cgi?id=1291947185 Sra

    asked by SraJMcGin
  228. 7th grade

    for a science project what questions can you ask about things that has to do with scientific process and how to solve it through forming hypothesis and give evidence about it like a question about population or something..

    asked by kiana
  229. 2nd grade

    Correct the sentences 1. Will you make cards for Valentines Day? 2. The teacher read Charlottes Web to the class in April. Thank you.

    asked by thommini
  230. science

    I am SOOOO stuck on this science question!! It's not that hard but, science isn't my forte..... here it is...." If the mass of the brick is 50 grams and it's volume is 9cm cubed, calculate the density of the block using the formula D = m/v." HELP

    asked by Rachel Bond
  231. 6th grade

    Why did people consider Nerfertiti a goddess?

    asked by Anonymous
  232. calculus

    A ceiling in a new home rises 8 feet over a distance of 29 feet. Find the slope of this ceiling. Round your answer to two decimal places

    asked by Krystle
  233. 8th grade

    I want write in english please help me

    asked by bina
  234. calculus

    what is the gradient of 2y-3x=21

    asked by Iasia
  235. Math

    i have to write this out in word form because it doesn't look rite when i use numbers... What is the value of X when Y=7? Problem: negative threeX to the 2nd power plus fourY minus one equals zero 2 -3x + 4y - 1 = 0

    asked by Kerri
  236. geometry

    if x, x+3 and y are the lenghts of the sides of a triangle then _

    asked by dalton
  237. marketing

    7) The marketing mix

    asked by Anonymous
  238. math

    what is the answer to this systems of equation using elimination 2x+3y=11 and 3x+3y=18

    asked by malachi
  239. math

    Solve for y: 12+11=-32y

    asked by laura
  240. Geometry

    Given triangleABC is congruent to triangleXYZ, if AB=3X-1, BC=5X+2, XY=7, and YZ=14, find X.

    asked by Marcus
  241. physics

    the rate at which position changes with time is called acceleration. true or false?

    asked by bryanna
  242. Physics

    What factors affect the period of a pendulum?

    asked by pooja
  243. Physics

    How do the initial and final horizontal velocities of a projectile compare?

    asked by pooja
  244. algebra

    3/8+y=-3/16

    asked by please help
  245. college maths

    subtract. 10 3/5-2 10/11= 8 38/55 7 743/55 7 38/55 Is D correct??

    asked by lisa
  246. child care

    thanks bobpursley ok 6 is not b so i think is a? and 20 if its 25-30% its b?

    asked by tiffany
  247. Math

    Add. 2z-2/3 + 3x+5/3

    asked by Sabrina
  248. math

    Multiply. 3x-3/2x-2 * 4x/3

    asked by yvonne
  249. algebra

    Solve. 2x-1/x=4

    asked by yvonne
  250. social studies

    Why were the Europeans beliefs different

    asked by panhia
  251. social studies

    could someone tell me about an intresting place to visit in washington d.c. that starts with a c-z

    asked by francis
  252. chemistry

    give the name and formulas of the compounds that rust is composed of

    asked by jjredick
  253. COLLEAGE ALEGEBRA

    QUES # 1 a STARTUP COMPUTER CAN SELL 1000 COMPUTERS IF THEY PRICE THEM AT $500. tHE NUMBER SOLD WILL INCREASE BY 10 FOR EVERY $1 decrease in the price. The company has fixed costs of $100,999, and each computer costs $300 to produce, Find the price that

    asked by Linda P*
  254. English

    1. The food is thought to be made from eggs. (Is this sentence grammatical?)

    asked by rfvv
  255. Calculus II

    Suppose that y = f (t) satisfies the differential equation dy/dt=y(2−y) and initial condition f (0) = 1. Find an explicit expression for f (t).

    asked by Joe
  256. science

    what are the global winds that effect north america?

    asked by sally
  257. Social studies

    What are The five basic terms associated with gender and sexuality are?

    asked by Juice
  258. Algebra II

    How would I write log(6)27-2log(6)3 as a single logarithm I'm confused on this one Thanks for any help you can provide

    asked by Matt
  259. Physics

    A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At

    asked by Ann
  260. social studies/writing

    could someone give me information on the top 20 washington d.c landmarks.please.

    asked by Arshely
  261. social studies

    i need info on iran's nuclear program asap so can u tell me were to get it

    asked by joshua
  262. science

    please help me unscramble oaoptvaien,aionitnrptsa rawdoungete & ntsiocnndeoa

    asked by t
  263. maths

    L =4 piesign Cx(x is below the line, solar constant) d squared Make d the subject

    asked by joleen
  264. college maths

    Simplify 5+1/3 1/3 1/3 {1/9+1/9} 4 1787/2187 4 1792/2187 4 1784/2187 4 22/27 Is D the best choice not sre for this one

    asked by lisa
  265. Math 7th grade

    40/n = 28/22 what is n?

    asked by Ruben
  266. Precalculus

    Find sin(θ), cos(θ), tan(θ). Assume a = 40, b = 9, and c = 41.

    asked by Anonymous
  267. algebra

    9z=8

    asked by please help
  268. math

    If a television produces a 8ms response time, and there are 1000 ms in one second, how many frames would lag per second is there in a 60 frames per second video game?

    asked by Raam
  269. Math

    How do you write a quotient that gives the same answer as 4.65\ 0.12?

    asked by Breya
  270. social studies

    how did native americans use the land and other mined resources?

    asked by panhia
  271. Areas of squares and rectangles

    a square with a side of 27 miles

    asked by Anonymous
  272. english

    where can i find some reason to support this opinion "high schools should not only prepare students for college, they also need to help them prepare future possibilities."

    asked by 000
  273. Algebra 2

    How do I find the inverse of a linear relation represented by the points (2,4) (6,8) (-3,9) (-7,-8)?

    asked by Johnna
  274. l.a

    flowers for algernon trail play what are some questions to ask if you are the prosecution in the play to the doctors who did the operashun on Charlie in the story

    asked by yuku
  275. English

    Alright I'm writing an MLA Essay about Through The Looking-Glass, a sequel to Alice's Adventures in Wonderland by Lewis Carrol. I'm basically writing about how it is indeed a sequel to the first book and comparing the two. I'm not sure how to start it and

    asked by Pat
  276. math

    were less than 50 lunches eaten in aweek? is the ans an estimate or exact?

    asked by esha
  277. science

    the temperture in which all motion of particles stop

    asked by matt
  278. Science

    what creates the circulation of air or water that forms from uneven heating?

    asked by Serena
  279. English

    Thank you very much for your corrections. Here are some more sentences for you to check. 1) Queen Victoria ascended the throne in 1837 and reigned constitutionally until she died in 1901. She never overruled (synonym?) Parliament and was beloved (synonym?)

    asked by Franco
  280. geo (finals)

    please help! i don't get these problems at all! a(4,3) b(7,4) and c(5,2) are midpoints of a triangle. find the coordinates for the vertices of the triangle!

    asked by Skylar
  281. algebra

    10-d=19 What is d? I think it is -9.

    asked by Bob
  282. chemistry(help please)

    Which acid,if it reacts in tincture of NaOH forms sodium hypochlorite?

    asked by Vlera
  283. math

    16g of mix for each litre of water so how many grams in 100ml

    asked by megan
  284. art

    there are 6 hues called ____ hues what are they and how are they made?

    asked by mary
  285. english

    do we need a comma after "me" and capitalize "Now" She also said to me "now I have trouble with understanding the importance of following my nutritional diet?"

    asked by blaze
  286. French

    En quoi se distingue l’anthropologie comme métier de l’anthropologie pratiquée comme une science ? What does this mean?

    asked by Jessica
  287. algebra

    6x-2x+8=x+5

    asked by Anonymous
  288. History

    What was "the late war" ? (My teacher said it's not Vietnam....) Thank you

    asked by APpreciative student
  289. algebra

    (y-4)-(y-9)=5y

    asked by Anonymous
  290. Social Studies

    Do mountains run through the majority of North Korea?

    asked by Agent nonya
  291. math

    What are deriviatives

    asked by Jonathan
  292. Math

    please show how you would divide 35.6728 by 5.246

    asked by Kelly
  293. chemistry

    give the name and formulas of the compounds that rust is composed of

    asked by jjredick
  294. math

    how would one divide the following, with full steps shown: 1+1/√3 ÷ 1-1/√3

    asked by harvey
  295. math

    1/2x+1/3y=5 1/4x+1/3y=4 elimination method

    asked by dawn
  296. 5th grade

    how old was Anne when she died

    asked by danaya
  297. college algebra II

    using the quadratic equation solve: y^2+16+64=0

    asked by April
  298. math

    what is the answer to g(x)=(5x-6)=2 when g(x)=b?

    asked by lorretta
  299. math

    2 1/4 double

    asked by mark