Questions Asked on
November 15, 2010

  1. calculus

    A long rectangular sheet of metal, 12 inches wide, is to be made into a rain gutter by turning up two sides so that they are perpendicular to the sheet. How many inches should be turned up to give the gutter its greatest capacity?

    asked by MEG
  2. Calculus

    A particle moves along a line so that at any time t its position is given by x(t)=2(pi)t+cos(2(pi)t). Determine the particle's maximum velocity.

    asked by MEG
  3. Physics Spring

    A mass sitting on a horizontal, frictionless surface is attached to one end of a spring; the other end is fixed to a wall. 1.0 J of work is required to compress the spring by 0.12 m. If the mass is released from rest with the spring compressed, it

    asked by Dan
  4. Chemistry

    Consider an electrochemical cell based on the following cell diagram: Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given that the standard cell emf is 0.35 V and that the standard reduction potential of chlorine is 1.36 V, what is the standard

    asked by Diana
  5. Chemistry

    A current of 0.80 A was applied to an electrolytic cell containing molten CdCl2 for 2.5 hours. Calculate the mass (in grams) of cadmium metal deposited. [Enter only numbers in the blank.]

    asked by Diana
  6. 4th grade

    Writing to Explain: Explain how you can use an array to find partial products for 4x36.

    asked by Justine
  7. biology

    If a brown-eyed man marries a blue-eyed woman and they have ten children, all brown-eyed, can you be certain that the man is homozygous? If the eleventh child has blue eyes, what will that show you about the father’s genotype?

    asked by laurie
  8. AP PHYSICS

    the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8 m/s. neglecting air resistance, what is the speed of the water at the to of te falls.

    asked by paul
  9. chemistry

    Consider a 20.0mL sample of 0.105M HC2H3O2 is titrated with 0.125M NaOH. Ka=1.8x10^-5. Determine each of the following: a) the initial pH b) the pH at 5.0mL of added base c) the pH at one-half of the equivalence point d) the pH at the equivalence point

    asked by bobjahng2
  10. Physics

    A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What is the minimum volume the slab must have so that a 42 kg boy can sit on the slab without it sinking?

    asked by Amber
  11. Chemistry

    H2O (liquid) yields H2O gas delta H= +44kJ. How much heat is evolved when 9.0 grams of water vapor is condensed to liquid water?

    asked by Katelyn
  12. Math

    Determine the 10th term of the sequence 3, 10, 28, 72, 176... State the general term.

    asked by Emily
  13. chem

    Fingernail-polish remover is primarily acetone (C3H6O). How many acetone molecules are in a bottle of acetone with a volume of 315 mL? (density of acetone = 0.788 g/cm3.) I know how to get grams to the molecules once i get ml to grams. but im not sure how

    asked by sam
  14. Chemistry

    Calculate the cell emf (in volts) for the following reaction at 25°C: Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M) [Enter only the number of your answer.] Answer

    asked by Diana
  15. AP Chem

    What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation is 2 H2O(g) -> 2 H2(g) + O2(g)and the relevant bond energies are H-H : 436 kJ/mol; H-O : 467 kJ/mol; O-O : 146 kJ/mol; O=O : 498

    asked by Kai
  16. chemistry

    Nitrous acid, HNO2, has a Ka of 7.1 x 10^-4. what are [H3O+], [NO2-], and [OH-] in .920 M HNO2?

    asked by Ron
  17. Physics

    Jill and her friends have built a small rocket that soon after lift-off reaches a speed of 900 m/s How high above the Earth can it rise? Ignore air friction. h=? m

    asked by Michael
  18. Calc.

    Use a linear approximation (or differentials) to estimate the given number. Tan 44 degrees Please help.

    asked by Chelsea
  19. 10th grade geo

    answers to objective 3-c algebra with pizzazz

    asked by amanda
  20. AP Chem

    What energy change is associated with the reaction to obtain one mole of H2 from one mole of water vapor? The balanced equation is 2 H2O(g) -> 2 H2(g) + O2(g)and the relevant bond energies are H-H : 436 kJ/mol; H-O : 467 kJ/mol; O-O : 146 kJ/mol; O=O : 498

    asked by Kai
  21. chemistry

    The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.)

    asked by rasheedat
  22. CALCULUS BC

    a particle moves on the x-axis in such a way that its position at time t is given by x(t)=3t^5-25^3+60t. for what values of t is the particle moving to the left. a.-2

    asked by paul
  23. Chemistry

    During the combustion of 5.00 g of octane, C8H18, 239.5 kcal is released. a) What is the sign of (delta)H for this reaction? b) How much energy is released by the combustion of 1.00 mol of C8H18

    asked by Patrick
  24. physical science

    a 250-kg rock falls off a cliff and comes to rest on the ground, which is 40 m below the cliff . At what point is the rock's potential energy at maximum?

    asked by sharmeka
  25. sociology

    What is the difference between deviance and nonconformity?

    asked by Rachel
  26. Chemistry

    4.0 gram of ferrous ammonium sulphate, FeSO4*(NH4)2SO4 * 6H2O, is used. Since the oxalate is in excess , Calculate the theoretical yield of the iron complex FeSO4•NH4)2SO4•6H2O + H2C2O4•2H20 --> FeC2O4 + (NH4)2SO4 + H2SO4 + 8H2O 6FeC2O4 + 3H2O2 +

    asked by Kesha
  27. Chemistry

    How much energy does it take to convert 0.800 kg ice at -20.°C to steam at 250.°C? Specific heat capacities: ice, 2.1 J g-1 °C-1 liquid, 4.2 J g-1 °C-1 steam, 2.0 J g-1 °C-1 ΔHvap = 40.7 kJ/mol, ΔHfus = 6.02 kJ/mol This is what I tried to do:

    asked by Anonymous
  28. math

    Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface area of the star

    asked by Daniel
  29. physics please help

    A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.170 m before momentarily coming to rest. (a) What is the spring constant of the spring? (b) Find the angular

    asked by john
  30. chemistry

    How many grams of MgF2 will dissolve in 150. mL of 0.100 M NaF solution? Ksp for MgF2 = 6.4 x 10-9

    asked by Audrey
  31. math

    What is the order of 1.5 x 10^3, 1.4 x 10^-1, 2 x 10^3, and 1.4 x 1-^-2 from least to greatest?

    asked by Daniel
  32. Advanced accounting

    The balance sheets of Petrello Company and Sanchez Company as of January 1, 2011, are presented below. On that date, after an extended period of negotiation, the two companies agreed to merge. To effect the merger, Petrello Company is to exchange its

    asked by Cynthia
  33. geometyr

    given triangle QRS=triangle TUV, QR=2x=7, RS=13,and QS=3x+2 and TV=7x-6 find the value of x

    asked by stephanie
  34. math

    Choose the equation of the horizontal line that passes through the point (2, 4).

    asked by Anonymous
  35. Calculus

    A company is designing shipping crates and wants the volume of each crate to be 4 cubic feet, and the crate's base to be a square between 1 and 1.5 feet per side. If the material for the bottom costs $5, the sides $3 and the top $1 per square foot. What

    asked by MEG
  36. math

    Writing in math, how can estimating help you add two-digit numbers?

    asked by David
  37. chemistry

    How many grams equal 1.0 mol of Azurite, Cu3(CO3)2(OH)2?

    asked by pinky
  38. Physics

    A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the

    asked by Bella
  39. Math

    Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm

    asked by Sasha
  40. Chem

    Why is BaSO4 insoluble in HNO3?

    asked by Molly
  41. math

    how would you write in a decimal:nine tousands,six hundred five and nine tenths

    asked by samantha
  42. chemistry

    The weak acid HQ has pKa of 4.89. Calculate the [H3O+] of .025 M HQ. when i did this i got 5.2 x 10 ^-14

    asked by missy
  43. chem

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia
  44. Chemistry

    How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of 2.00 Amperes? [Enter only a number for your answer.]

    asked by Diana
  45. math

    2 trees are 80 m apart . from a point halfway between the trees, angles of elevvation of the tops of the trees are measured. what is the height of each tree to the nearest metre

    asked by anu
  46. chem

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia-Drboob22
  47. chemistry

    The X-X bond energy in the hypothetical gas, X2 is 153 kJ/mol. a. How much energy, in joules, is required to break the bond in a single X-X molecule? b. What wavelength of electromagnetic radiation would have the energy required to break the X-X bond? c.

    asked by help
  48. English

    In Act 4, Claudius notes that “sorrows come…in battalions.” By the end of the play these sorrows include the deaths of all the major characters except Horatio. To what degree can Claudius be held responsible for all the sorrows of the play? Which

    asked by rainy
  49. chemistry

    The enthalpy change for the solution process when solid sodium hydroxide dissolves in water is -44.4 kJ/mol. When a 13.6 g sample of NaOH dissolves in 250.0 g of water in a coffee-cup calorimeter, the temperature increases from 23.0 o C to __________ o C.

    asked by Anonymous
  50. rpi

    For the stepladder shown in Fig. 12-51, sides AC and CE are each 3.34 m long and hinged at C. Bar BD is a tie-rod 0.662 m long, halfway up. A man weighing 746 N climbs 2.51 m along the ladder. Assuming that the floor is frictionless and neglecting the mass

    asked by Anonymous
  51. STATISTICS HELP PLEASE!

    suppose you wish to estimate a population mean based on a random sample of n observations, and prior experience suggests that sd=12.7. if you wish to estimate the mean correct to within 1.6, with probability equal to .95, how many observations should be

    asked by Courtney
  52. Physics

    Three masses are connected by massless rigid rods. Rods AC and CB have length l= 16.6 cm. If massA=115.0 g, massB=206.0 g, and massC=310.0 g, what are the coordinates of the center of mass? (Enter your answer for the x coordinate first, followed by the y

    asked by Bella
  53. French 3

    Réécrivez les phrases avec l'adverbe qui correspond a chaque adjectif. Faites attention au placement de l'adverbe. 1. Karine et Mathilde sortent (frequent) 2. Fabien lit le journal (quotidien) 3. Sara termine ses devoirs. (facile) 4. michel conduit

    asked by Sarah Smith
  54. chem/DrBob22

    consider the following balance chemical equation: 2NH3(g)+3CuO(s)=N2(g)+3Cu(s)+3H2O(g) if 18.1grams of ammonia reacts with 90.4 grams of copper(II) oxide, which is the limitting reagent?? what is the theorectical yield of nitrogen gasd? if 8.52 g of N2 are

    asked by julia
  55. Calculus

    Mr. Phillips decides to have a completely fenced-in garden. It will be laid out so that one side is adjacent to his neighbor's property. The neighbor agrees to pay for half of that part of the fence which will border his property. The garden is to contain

    asked by MEG
  56. english

    Please help! My Mom and I are disagreeing! Jazz began in New Orleans. Verb is began and it is intransitive. 2) Jazz musicians played by ear. Verb is played and it is transitive.My Mom thinks it is intransitive. 3)They played blues and spirituals. Verb is

    asked by Reed
  57. chemistry

    The solubility of Fe(OH)2 is 3.00  10-3 g in 2.00 liters at 18°C. What is its Ksp at 18°C?

    asked by Audrey
  58. Physics

    A particular guitar string is supposed to vibrate at 220 , but it is measured to vibrate at 230 . By what percent should the tension in the string be changed to correct the frequency? I have been working for 7 hours of hw! Please help!

    asked by Jenna
  59. chemistry - DrBob222

    For this question can u please explain steps 3 and 4 4.0 g of ferrous ammonium sulphate, FeS04(NH4)2 SO4 6H20, is used. The oxalate is in excess, calculate the theoretical yield of the iron complex. Can someone please show me how to calculate a question

    asked by eddy
  60. Physics

    Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

    asked by Lee
  61. chemistry

    What is the value of [OH-] in a 0.015 M CH3COOH solution? Ka = 1.8 x 10-5 I started by writing the equation: CH3COOH + H2O H3O+ + CH3COO- Ka= [H3O+][CH3COO-]/[CH3COOH]= 1.8 E-5 ... Now what? I don't understand where OH relates to this ...

    asked by Audrey
  62. chemistry

    Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of

    asked by ESTR3LLA
  63. chemistry

    Calculate the ionization constant, Ka, of phenol (HC6H5O), a weak acid, if a 0.25 M solution of it has a pH of 5.24.

    asked by Audrey
  64. social studies

    why did the struggle for rich farmland affect the colonists in Virginia?

    asked by Anonymous
  65. Math

    Describe how this could happen that three different animals could each be claimed - rightfully - to be the largest of the three. Discuss the implications of this kind of situation for teaching students about measurement.

    asked by lt
  66. chemistry

    Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.

    asked by Brandon
  67. managerial accounting

    The following direct materials and direct labor data pertain to the operations of Solario Manufacturing Company for the month of August Costs Quantities Actual labor rate $13 per hour Actual hours incurred and used 4,200 hours Actual materials price $128

    asked by jennifer
  68. chemistry

    The following system is at equilibrium with [N2O4] = 0.55 M and [NO2] = 0.25 M. If an additional 0.10 M NO2 is added to the reaction mixture with no change in volume, what will be the new equilibrium concentration of N2O4? N2O4(g) 2 NO2(g)

    asked by Audrey
  69. HELP!! MATH

    A boater finds herself 4 miles fromm the nearest point on a straight shore line whech is 6 miles from a shoreside motel. She plans to row on shore and then walk to a motel. If she can walk at 3 mph, at what speed must she be able to row so that the

    asked by MEG
  70. chemistry

    When 10.g of NaCl is reacted completely with 65g of Pb(NO3)2 according to the following reaction? How much (grams) of PbCl2 can be produced? 2 NaCl + Pb(NO3)2 ----> PbCl2 + 2 NaNO3

    asked by pooja
  71. the lagrange multiplier equation

    A cylindrical oil-storage tank is to be constructed for which the following costs apply: cost per square meter metal for sides $30.00 (cost per square meter) combined costs of concrete base and metal bottom $37.50(cost per square meter) top 7.50 (cost per

    asked by sunny
  72. chemistry

    Calculate the mass (in grams) of water vapor produced when 56.0 grams of pure hydrogen gas burn in the air. Given the information from that, calculate the mass of oxygen gas that would be needed to burn 100 grams of hydrogen gas.

    asked by Brandon
  73. phsyics

    The 3.0cm-diameter water line in the figure splits into two 1.0cm -diameter pipes. All pipes are circular and at the same elevation. At point A, the water speed is 2.0 m/s and the gauge pressure is 50 kPa. What is the gauge pressure at point B. I keep

    asked by Allison
  74. Algebra-Please check

    y= 6x is written as: Choices y = log(6)x x = log(6)y I chose y = log(6)x, correct?I did the inverse so x = 6^x isolate y so it becomes y = log(6)x

    asked by Jesse
  75. Calculus

    q 0 125 250 375 500 625 750 C'(q) 26 24 30 26 23 25 29 a) If the fixed cost is $8500, use the average of left- and right-hand sums to determine the total cost of producing 500 units. Answer: $ b) How much would the total cost increase if production were

    asked by Lena
  76. Physics!!

    A 4.9 kg bucket of water is raised from a well by a rope. The acceleration of gravity is 9.81 m/s2 . If the upward acceleration of the bucket is 3.3 m/s2, find the force exerted by the rope on the bucket of water. Answer in units of N.

    asked by Joey
  77. Chemistry 20

    Determine the amount concentration of potassium ions and dichromate ions in a solution made by dissolving 44.7 g of potassium dichromate to make a volume of 205 mL. Include the balanced chemical equation.

    asked by Anonymous
  78. Biolody

    Which of the following is NOT a characteristic of the respiratory surface of the alveoli? a) Thin-walled b) Dry c) In contact with an environmental source of oxygen d) In contact with the transport system that carries dissolved materials to and from the

    asked by Brianna
  79. spanish

    what is the third person singular form of the verb estar? Re-write the following sentences replacing the underlined direct object with a direct object pronoun. Remember, the direct object pronoun needs to be placed directly in front of the conjugated verb.

    asked by whitney
  80. chemistry

    How many grams of rust form when 453 kJ of energy are released?

    asked by sal
  81. english

    Plot is the artificial ordering of events true?

    asked by danny
  82. 5th grade math

    Form a equivalent problem for 4 1/2 divided by 1/2 by doubling both the dividend and divisor. Then find the quiotent. Would that be 9 divided by 1 =9

    asked by Jill
  83. math

    what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3

    asked by Daniel
  84. Physics

    A man of mass 64.8 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 16.8 kg and is 3.9 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the

    asked by Bella
  85. chem

    Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of

    asked by ESTR3LLA
  86. Geometry

    To build a fence, Jim positioned the fence posts and then placed a 2 x 4 board at an angle between the fence posts. As he placed each picket, he measured the angle that the picket made with the 2 x 4. Why does this ensure that the picket will be parallel?

    asked by Shadow
  87. statistics

    a study of 40 professors showed they spent on average 13.6 minutes correcting a student papers. Given a standard deviation of 17, the 90% confidence interval of the mean time for all the test papers is what?

    asked by Emmanuel
  88. chemistry

    Acetic acid ionizes in water according to the following equation: CH3COOH = H^+ +CH4COO- If the solution is .906 M acetic acid, what is the concentration of H+?

    asked by Hermione
  89. programing

    A small startup software developer company needs to create a program that will calculate the pay of its employees. For the third version of the program, the company wants the program to accept an employee’s name, the number of hours the employee worked,

    asked by Anthony
  90. 11th grade

    What measures does henry say the colonists have already tried in the dealings with england?

    asked by mike
  91. english

    Character can be portrayed by direct exposition. false?

    asked by danny
  92. math

    A British company is sending you measurements for a table to build in your factory. The table top must be 50 cm × 75 cm. Your machine calibrates in inches. Find the size of the table in inches. (1 cm = .39 in)

    asked by Anonymous
  93. chem

    Air bags are actived when a servere impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3=2Na(s)+3N2(g) what mass of

    asked by ESTR3LLA
  94. Algebra-Another question

    Evaluate 4log(4)8 Possible answers are: 4 0 8 1 Where do I start-I don't have an example to follow? Please give me a direction do I evaluate log(4)8 first

    asked by Jesse
  95. physics

    a 75.0 kilogram skier is at the top of a hill that is thirty degrees above the horizontal. the skier starts form and then travels down the hill which is 100 meters long. the skier at the bottom of the hill instantaneously then travels on flat horizontal

    asked by marie
  96. Math

    Tell whether the triangle with the given side is a right triangle;1.4 m,4.8 m,5m. Explain please.

    asked by Sasha
  97. college

    the length of the top of a table is 3 m greater than the width. the area is 88m^2. find the dimensions of the table

    asked by will
  98. buddhism pilgrimage

    thesis statement for buddhism

    asked by jacqui
  99. French 3

    1. créez six phrases a l'aide éléments des trois colonnes. Ajoutez tous les autres éléments nécessaires. A. agent de police chauffeur de taxi citoyens colocataire conducteur maire passagers piéton __B.________________ améliorer construire descendre

    asked by Sarah Smith
  100. algebra

    Which of the following describes the end behavior of the graph of the function f(x) = –x6 – 3x4 + 7x – 5? a. downward to the left and upward to the right b.upward to the left and downward to the right c.downward to the left and downward to the right

    asked by Math is TOUGH
  101. Math

    THe total ticket sales for the basketball game were $1,625.00. Adult tickets were $7.00, and student tickets were $3.00. Twice as many students bought tickets as adults. How many student and adult tickets were sold?

    asked by Mike
  102. Math

    Four balls are simultaneously picked at random from a jar containing 2 red balls, 2 green balls, and 6 yellow balls. What is the probability that exactly two of the selected balls will be red?

    asked by Molly
  103. Calculus

    A baseball diamond is a square with side 90 feet. A batter hits the ball and runs toward first base with a speed of 24 f/s. At what rate is his distance from second base changing when he is halfway to first base?

    asked by John
  104. Chemistry

    Other than moisture, what are the three major components of the air you breathe

    asked by Adrienne
  105. Physics

    A uniform plank of length 5.0 m and weight 217 N rests horizontally on two supports, with d = 1.06 m of the plank hanging over the right support. To what distance, x, can a person who weighs 427 N walk on the overhanging part of the plank before it just

    asked by Pete
  106. English/history question regarding two stories

    in two stories, Genesis and Popol Vuh, What was different and what was similar? I need to write a papaer on these two things. Please help me Thank you

    asked by Allyson.
  107. Physics

    A man of mass 64.8 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 16.8 kg and is 3.9 m long. Suppose the man stands to the right from the middle of the scaffold that is a distance one sixth of the length of the

    asked by Bella
  108. Calculus

    Match: A. r(1997)−r(1992) B. ∫19921997r′(t)dt C. r(1997) D. ∫19921997r(t)dt E. [ r(1997)−r(1992)/1997−1992] and interpretations: A. Average rate of change of the debt rate between 1992 and 1997 B. Change in debt rate between 1992 and 1997 C.

    asked by Lena
  109. Chem I

    Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution. Also calculate the pH and pOH of the solution.

    asked by Natalea
  110. physical

    calculate the total energy of a 2-kg object moving at 10m/sec 50meters above the surface.

    asked by Anonymous
  111. physics

    5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?

    asked by Amber
  112. math

    what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3

    asked by Daniel
  113. physical science

    In the cabin of a jetliner that travels at 600 km/h, a pillow drops from an overhead rack into your lap below. Since the jetliner is moving so fast, why doesn't the pillow slam into the rear compartment of the plane? What is the horizontal speed of the

    asked by Justin
  114. physics

    An athlete at the gym holds a 5.29 kg steel ball in his hand. His arm is 67.0 cm long and has a mass of 4.57 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor?

    asked by pete
  115. calculus

    a company introduces a new product for which the number of units sold S is S(t)=200(5-(9/2+t)) where t is the time in months. a.)find the average value of S(t) during the first year. b.) during what month does S'(t) equal the average value during the first

    asked by kel
  116. physics

    if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed

    asked by tyler
  117. Chemistry

    Okay, so I got question 1 but I don't know how to solve question 2. Since they are tied in, I'll post both of them. 1. When 0.43g of NaNO2 is allowed to react with an excess of HSO3NH2, the volume of N2 gas produced is 0.145 L. After the reaction is

    asked by yipez
  118. Engineer Mechanics

    60-kg skier passes point a with a speed of 5 m/s, determine his speed when he reaches point b. also find the normal force exerted on him by the slope at this point.

    asked by Gubby
  119. Finance

    A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average

    asked by Suzy
  120. physics

    if a 700-kg piano us lifted 4.0 meters in 14 seconds, how much power is developed

    asked by tyler
  121. algebra

    the function w(x)=-0.01x^2+0.27x+9.20 can be used to estimate the number of workers in the US, x years after 1980. How many workers were there in 1995? please show work. a. 9.2 M b. 10.4M c. 11M d. 15.5M

    asked by Math is TOUGH
  122. Calculus

    What is the x-coordinate of the point on the curve y=e^x that is closest to the orgin?

    asked by MEG
  123. Chemistry 20

    Determine the amount concentration of the iron ions and sulfate ions in a 0.620 mol/L solution of iron(III) sulfate. Including the balanced chemical equation.

    asked by Anonymous
  124. chem

    An ideal gas in contained in a cylinder with a volume of 5.0x102mL at a temperature of 30C and a pressure of 710 torr. The gas is then compressed to a volume of 25mL, and the temperature is raised to 820C. What is the new pressure of the gas?

    asked by julia
  125. 11th grade

    At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into

    asked by Stephanie
  126. economics

    A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average

    asked by Anonymous
  127. physics

    could someone tell me how to do this? 1. A diagram illustrating several tugboats applying forces to a barge is shown below. What is the magnitude and direction of force does tugboat C (Fc) need to apply to keep the tugboat from moving? C:\Documents and

    asked by grace
  128. chemistry

    write a balance equation for the following. when octane is burned in an excess of oxygen, carbon dioxide and water vapor produced

    asked by brook
  129. Math

    Mr. Oakley, my wood shop teachger is kind of strange. He has a 12 inch strip of wood with only four marks in it that he uses as a ruler. Yesterday, I asked him about it. "What good is a ruler you use uf ut only has 4 marks on it? There are some lengths you

    asked by Issa
  130. Chemistry- wavelengths

    a. If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? b. How about if the solution was blue-green?

    asked by Jenna
  131. economics

    A company is considering a plan that has different profit results under different conditions. Assuming there is a 20% chance of a boom and 10% chance of a recession, compute the expected value of their plan. Condition Result Boom $2,000,000 Profit Average

    asked by Suzy
  132. Chemistry,please help

    You are working with the following equilibrium system in which one chromium complex is blue and one chromium complex is purple. The system is at equilibrium and is currently blue. Predict how the color will change if aqueous Ag+ ions are added. Ag+ reacts

    asked by HK
  133. English

    Posted by rfvv on Monday, November 15, 2010 at 6:19am. The man said,"I want you to weed this garden." (This garden seems to belong to the man.) Q: What did the man want Francisco and his grandpa to do? 1. He wanted them to weed a garden. 2. He wanted them

    asked by rfvv
  134. College Chemistry Help Asap!

    Determine the values of Kp that correspond to the following values of Kc a)CO(g) + Cl2(g) COCl2(g) Kc= 1.2 x 10^3 at 668 K b)2 NO(g)+ Br2(g) 2 NOBr(g) Kc= 1.32 x 10^-2 at 1000 K c) 2 COF2(g) CO2(g)+ CF4(g) Kc= 2.00 at 1000 degrees Celsius

    asked by shanice
  135. Chemistry

    What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)

    asked by Molly
  136. physics help

    A 1.0 kg object is suspended from a vertical spring whose spring constant is 130 N/m. (a) Find the amount by which the spring is stretched from its unstrained length.

    asked by jason
  137. Calculus

    An isosceles triangle is to be drawn with its two equal sides of legth 10. What is the maximum possible area for the triangle? [Note: The area of a triangle is given by half the product of two sides with the sine of the included angle.]

    asked by MEG
  138. Chemistry 20

    What volume, in millilitres, of distilled water must be added to 105 mL of 0.600 mol/L sulfuric acid solution in order to dilute it to a concentration of 0.400 mol/L

    asked by Anonymous
  139. Chem I

    Ok here is another one! Concentrated aqueous HClO4 has a concentration of 14.8 M. Calculate the concentrations of ALL ions present in a solution prepared by pipetting 5.00mL of concentrated HClO4 into a 1000.0-mL volumetric flask and filling to the mark.

    asked by Natalea
  140. physics

    A hiker who weighs 889 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3690 N, and rests on two concrete supports at each end. He stops one-fifth of the way along the bridge. What is the magnitude of

    asked by Bella
  141. math

    write a decimal number for each word name nine thousand,six hundred five and nine tenths

    asked by samantha
  142. 9th grade

    Use the following Info. At sea level the speed of sound in air is linearly related to air temp. If 35 degrees Celsius sound travels at a rate of 352meters per sec. if 15degrees Celsius sound travels at 340 meters per sec. How would i write a linear

    asked by Kaela
  143. biology

    Which of the following is NOT true about the digestive system of annelids? a. It contains setae to move the food through the anus. b. It is similar to an open tube. c. It passes nutrients through the intestinal wall to the bloodstream. d. It stores soil in

    asked by Lily
  144. Intro to chemistry

    Determine the volume of 2.3 M H3PO4 that can completely react with? 340 mLs of a 5.1 M solution of NaOH according to the reaction: 3 NaOH + H3PO4 --> Na3PO4 + 3 H2O stuck on a homework problem..pls help!

    asked by tc
  145. Physics-Please Help Me!!

    5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?

    asked by Amber
  146. chemistry

    A diprotic acid solution H2A has a molarity of .95 M. the concentrations of the species present at equilibrium are as follows: [H+] = .25 M, [HA-]=.25M, [A^2-] =4.6x10^-4 M. what are the first and second ionization constants for this acid?

    asked by Sam
  147. Chem I

    Ok one more! Write the balanced equations and assign oxidation numbers to all atoms in these two reactions involving iron. If the effective oxidation number of any particular atom changes during the reaction then a redox reaction has occurred. If a redox

    asked by Natalea
  148. BUSINESS ORGANIZATION

    1. WHAT IS THE DIFFERENCE BETWEEN A MANAGER AND A LEADER; 2. WHAT ARE THE MAIN OR DIFFERENTS TYPES OF A LEADER OR LEADERSHIP; DISCUSS THEIR MAIN FUNCTIONS AND STATE WHETHER ANYONE CAN BECOME A LEADER.

    asked by MARY
  149. chemistry

    Write the formulas for these compounds 1. manganese (IV) oxide 2. nickel (II) chloride 3. zinc chloride

    asked by Nick
  150. geometry

    In an isosceles triangle ABis congruent to BC. Measure of angle A is x +3y and the measure of angle C is 3x +2y. The measure of angle C is 63 degrees. Find x and y.

    asked by Aaron
  151. math

    Originally priced at $35 now on sale for 25% what proportion could you do to find d the discount of the price

    asked by Abby
  152. math

    (6x-7) 5x

    asked by robert
  153. science

    A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

    asked by Miley
  154. physics help

    A 8.6 kg board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a spring constant of 186 N/m and is parallel to the floor. Find the amount by which the spring is stretched from its unstrained length.

    asked by jason
  155. Algebra

    Consider the equation 5x + 2y = 30. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. (3

    asked by Heather
  156. Molar Mass Question

    Hello, I have been asked to find the molar mass of ferrous ammonium sulfate [ NH4]2[Fe][SO4]2·6H2O] would i consider the molar mass of the water as well, why or why not?

    asked by Moi
  157. math

    The sum of the page numbers on the facing pages of a book is 457. Find the page numbers?

    asked by dc
  158. Math

    Tell whether the triangle with the given side is a right triangle;14mm, 19mm, 23mm Explain please.

    asked by Sasha
  159. st elizabeth technical

    1. What would you think of a company's ethics if ti changed accounting methods every year? 2. What accounting principle would changing methods every year violate? 3. Who can be harmed when a company changes its accounting methods too often? How?

    asked by dave
  160. general science

    A test liquid has a density if 1.1g/ml. when you pour some of it into a cupof water, what will happen ( assumming that their natures are such that they don't mix and that there is no chemical reaction between the two subtances?

    asked by sherrie
  161. physics

    A square, 0.52 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. This axis is perpendicular to the plane of the square. A force of 15.0 N lies in this plane and is applied to the square. What is the

    asked by Bella
  162. 9th grade algebra

    The force F required to stretch a string varies directly with the amount the string is stretched, S. 32 pounds is needed to stretch a string 4 inches.. A) Write a direct variation equation that relates F and S. Answer: 32=F*S+4 is what I think.. Most

    asked by Allyson
  163. history

    How did ranching become established in the West?

    asked by ashely
  164. Calculus

    Find the minimum distance, measured horizontally, between the graphs of y=x and y=x^3

    asked by MEG
  165. history

    what checks and balances does president, Congress, and the judiciary have on the bureaucracy. Which techniques are used most often, and which are most effective and why? Respond to at least two of your classmates' postings

    asked by Lateefa
  166. math

    what is the simplified form of the expression? (3c^2d^4)^3(2c^5d^8)^3

    asked by Daniel
  167. com/156

    what is the main point of process analysis in writing? Why are four basic steps of process analysis important? what happens if you skip a step?

    asked by jo
  168. math

    Scientists believe that there is an extremly massive black hole at the center of the milly way. How many times more massive than the Sun would a black hole with a mass of 7.36 x 10^36 kg be? The mass of the sun is approximately 1.99 x 10^30 kg.

    asked by Daniel
  169. Chemistry

    Can you have one half-reaction take place, without the other half-reaction taking place immediately? The other half-reaction takes place when the cell potential is raised. I half witness this in some electrochemical cells. Sincere Thanks.

    asked by Frances
  170. Physics

    5.Assuming the surface tension of water is .073 N/m, what is the force required to overcome the surface tension?

    asked by Amber
  171. MATH STUCK:-(

    I am having some difficulties factoring polynomials and I use only one method to figure the stuff out, which is the guess and check method because it's just mental math work and not that complicating. Here is a question that I know how to do, and below it

    asked by Anonymous
  172. Physics

    Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power

    asked by Lee
  173. science

    Pendulum A is 20 cm long and has a 5 gram mass on it. Pendulum B is 30 cm long and has a 10 gram mass on it. Which one has a faster period?

    asked by jessie
  174. ethics

    Consider the following scenario: You are aware of a problem that is costing your company productivity. This problem is caused by a fellow employee !@#$%^&fuses to use current technology. This employee has asked you to keep the situation to yourself, since

    asked by Anonymous
  175. Music The Classical Era

    The______ is an essential characteristic of the sonata form.

    asked by Marie
  176. math

    Find the maximum area of a rectangle inscribed between the x-axis and f(x)=-x^4+3

    asked by Jeff
  177. MATH

    KARA NEEDS $35 FOR AN AQUARIUM FOR 6 FISH. HOW CAN SHE PAY WITH THE LEAST TEN AND ONE DOLLAR BILLS?

    asked by DARLA
  178. chemistry

    How many grams equal 6.3 mol of N2?

    asked by pinky
  179. 9th grade algebra

    The table shows the ammount ( IN dollars) spent by a household on plans and flowers in certain years. ( Time interval means to give a range of years) A) Determine the time interval during which the amount spent on plans showed the least rate of change. B)

    asked by Allyson
  180. Calculus

    what is the equation of the tangent line that passes through X^(1/4) + y^(1/4) =4 at the point (16,16) please give the equation

    asked by smokey
  181. science

    What is the diffrence bettween mitosis and meiosis in plant and animal cells?

    asked by nikiyah
  182. AP PHYSICS PLEASE HELP

    A basketball player makes a jump shot. The 0.700 kg ball is released at a height of 1.90 m above the floor with a speed of 7.00 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.70 m/s. What is the work done on the ball by air

    asked by DUE TOMORROW NEED HELP!
  183. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by Katherine
  184. math

    The present value of the money in your savings account is $420, and you're receiving 3% annual interest compounded monthly. What is the future value in two months?

    asked by Anonymous
  185. Statistics

    For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: A. a sample of 10 with a mean of 44. B.a sample of 1 with a mean of 48. The

    asked by Barbara
  186. biology

    Characteristics that give birds the energy they need to fly long distances are a. strong breast muscles and wings. b. aerodynamic feathers and lightweight bones. c. divided ventricle and air sacs in lungs. d. endothermic metabolism and fused bones. C?

    asked by Lily
  187. physics

    A projectile is fired horizontally from a gun that is 95.0 m above flat ground, emerging from the gun with a speed of 250 m/s.

    asked by Rebecca
  188. math

    you invest 1000$ at an annual growth intrest rate of 5%.how much money will your investment be worth in 20years?

    asked by lilly
  189. math

    How many different combinations of coins can total exactly $0.40? I got 31 possible combinations

    asked by Jamie
  190. Trigonometry

    1. (cotè+1)(cscè-1/2)=0 2. sin²è-cos²è=1+cosè

    asked by Dee
  191. chemistry

    the solution contain 6 grams of caustic soda dissolved per dm.find the percentage impurity

    asked by ahmed
  192. Chemistry

    What reagent would allow you to distinguish between AgNO3 and MNSO4? (As if using an analysis scheme)

    asked by Molly
  193. chemistry

    What is the concentration of hydroxide ions in a solution of .31 M sodium acetate (NaCH3COO)? (The Kb for sodium acetat is 5.6 x 10^-10.)

    asked by Max
  194. Physics

    When a driver applies brakes to keep a car going downhill at constant speed and constant kinetic energy, the potential energy of the dar decreases. Where does this energy go? Where does most of it go with a hybrid vehicle?.

    asked by Melijo
  195. math

    is this correct? 19 - 8 < 12 would the number 8 make this number sentence true?

    asked by shy
  196. math

    Rex is taking three friends for a ride in his new car. one friend can sit in front with Rex, and two can sit in back. If Rex always drives, how many seating arrangements of two passengers in back and one in front are there in his new sport car?

    asked by Anonymous
  197. physics

    A Ferris wheel rotates at an angular velocity of 0.20 rad/s. Starting from rest, it reaches its operating speed with an average angular acceleration of 0.029 rad/s2. How long does it take the wheel to come up to operating speed?

    asked by michelle
  198. Precalculus

    how would you solve this equation? please help! (x/2)LOG 7 = LOG 5 - xLOG 5

    asked by Lizzy
  199. history

    what checks and balances does president, Congress, and the judiciary have on the bureaucracy. Which techniques are used most often, and which are most effective and why? Respond to at least two of your classmates' postings

    asked by Lateefa
  200. biology

    Which of the following are three common characteristics of echinoderms? a. tube feet, circulatory system, body symmetry b. marine-dwellers, endoskeletons, water-vascular system c. bilateral symmetry, ossicles, respiratory system d. mouths, protosomes, body

    asked by Lily
  201. general science

    Which of the following is an example of homogeneous mixture? b. a typical soil sample c. a glass of orange juice d. a bottle of vinegar

    asked by sherrie
  202. Economics

    Hi guys, I'm having a lot of trouble with this question. Maybe I should have paid attention more, too late now though. If anyone could help or point me out in the right direction, I'd really appreciate it! Thank you. Here is what the paper says "Your

    asked by Andrew
  203. calculus

    Q1) find the derivative of cos(e^(x^4sin(x))) Q2) If d/dx (f(4x^5))=7x^2 calculate f'(x)=

    asked by Lily
  204. science

    A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

    asked by Miley
  205. Physics help

    A 1.0 kg object is suspended from a vertical spring whose spring constant is 105 N/m. The object is pulled straight down by an additional distance of 0.25 m and released from rest. Find the speed with which the object passes through its original position

    asked by david
  206. Math

    Tina had no money until she received her pay from her boss. Afterward, she spent 7.50 dollars on food every day from Monday through friday. She spent 30 dollars on clothes and 25 dollars to repair her bike. If she had 40.50 left over what would be a

    asked by Mark
  207. college algebra

    What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5-x^4+x^3-x^2+x-1

    asked by lori
  208. math

    Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80

    asked by Cody
  209. Thermochemistry Ap Chem homework

    Any help would be great, even if it is just a way to start or a formula. Calculate the heat necessary to convert 10.0 g of water (just melted) at 0 degrees Celcius to water at 20 degrees Celcius, assuming that the specific heat remains constant at 1

    asked by Chris
  210. chemistry

    In the emission spectrum of hydrogen, some lines are in the infra red range. h l Suggest an electron transition (specify n and n) that is in this range and calculate its corresponding wavelength and delta E.

    asked by help
  211. english

    I'm writing my essay on the book Edward's eyes and my essay is about the three types of themes in the book. The first theme is about the closeness of a familys relationship to each other. How would I write my topic sentence for my first paragraph. I'm

    asked by heather
  212. statistics

    The first class in a relative frequency table is 50-59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate?

    asked by Anonymous
  213. Statistics

    When comparing two independent population means, how do I find the degree of freedoms?

    asked by jane
  214. History

    When was the evolution of the socio- political milieu during the colonial period including Protestant Christianity's impact on colonial social life

    asked by Jordan
  215. chemistry

    The Ka of stearic acid is 1.3 x 10^-5. what is the Kb of stearate?

    asked by Todd
  216. MARKETING MANAGEMENT

    1. DEFINE AND COMMENT ON THE MARKETING CONCEPT. 2. OUTLINE AND COMMENT ON THE ROLE OF MARKETING MANAGEMENT WITHIN THE WIDER CONTEXT OF THE OPERATION OF A BUSINESS ENTERPRISE AS A WHOLE UNIT.

    asked by MARY
  217. English

    1. He had to help his grandpa get work. 2. He had to help his grandpa get a job. 3. He had to help his grandpa get a work. (Does #1 have the same meaning as #2? What about #3? If we add 'a' before work, is it correct?)

    asked by rfvv
  218. Algebra

    How would I write 1-2log(7)x as a single logarithm Choices: log(7) x^2/7 log(7) 7x^2 log(7) 7/x^2 log (7) x^2 Thank you

    asked by Jesse
  219. Chemistry

    Which atom has a larger atomic radius, Ca or Ra? Why?

    asked by Jazmin
  220. Com170

    Analyze why one paragraph was more effective than the other. In my analysis, compare the sentence structure, word choice, punctuation, variety, and the rhythm of both paragraphs. Most consumers understand that a good credit score is vital to one's

    asked by Wanda
  221. college

    What do I do to Find dy/dx using logarithmic differentiation. y=(x^3)sqrt(1+(x^2))

    asked by Jacy
  222. math 20 (finance)Please help

    At the end of each month, Jacob puts $400 into an account that pays 6%, compounded semi-annually. Use your graphing calculator to determine how much Jacob will have after 25 years? Show how you obtained your answer by filling in the following as if it was

    asked by Sandi
  223. chemistry

    At 25 degrees Celsius the Ka for a 0.120 mol/L solution of acetic acid (HC2H3O2 ) is 1.8 X 10-5. determine the pH of the acetic acid solution

    asked by kneLl
  224. algebra

    i have very little information in my math book on the following questions. can you either tell me the answer or a link where i can find my own answer. thanks How do you know if a quadratic equation will have one, two, or no solutions? How do you find a

    asked by Donni
  225. Environmental science

    What policies would be recommended to Italy or germany assuming their desire to acheive a sustainable society

    asked by juanita
  226. 9th grade

    how do you do linear functions?...for ex.xy=6..whats the answer?

    asked by taylor
  227. chemistry

    The quantum numbers: n = 1, l = 0 and ml = 0 ; can occur together to specify an orbital

    asked by Natalie
  228. Math

    Use an addition or subtraction formula to write the expression as a trigonometric function of one number, and then find its exact value. (tan(π/2)+tan((2π)/3)) / (1-tan(π/2)tan((2π)/3)) Answer=__________ Exact value answer=_________ ~Thank you.. I

    asked by Shaun
  229. chemistry

    What reagent would allow you to distinguish between FeCl3 and PbCl2? (As if using an analysis scheme)

    asked by Molly
  230. marketing

    you work in the marketing department of a small sportswear and accessories, but a proposal to diversify into sports shoes is under consideration. your marketing director asks you to write a report on the advantages and disadvantages of entering the sports

    asked by Anonymous
  231. physics

    Two cars have a head-on collision.Both were traveling at 37 m/s toward each other.Car A has a mass of 432 KG.Car B has a mass of 90 KG. After impact,car A is moving backward at 3 m/s. What car B's velocity after impact?

    asked by Mayte
  232. english

    What do you think about this situation? What is the assessment of this scernario Talk with a 22 year old male student and school athlete, plays water polo, about adapting while recovering from a broken pelvis. He feel he will lose his edge during recovery

    asked by flame
  233. English

    Hi I have to do a presentation on the graphic version of the novel "Kidnapped" by Robert Louis Stevenson. I plan on doing a powerpoint (it's on tuesday ahh). I was wondering what key points i should mention and describe. Please help, I am stressing over

    asked by Jon
  234. college

    What type of goods is most often produced in a traditional economic system? a-heavy industrial machinery b-textiles c-agricultural products

    asked by lynn
  235. algebra

    x^2+3x-12=0 I need to factor this and thought I knew how, but I can't figure this one out. Factors of 12 are 1,12; 2,6; 3,4 and when I subtract these I don't get the 3 I need for the 3x. Am I overlooking something? My other problems were easy, so I don't

    asked by meg
  236. science

    A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

    asked by Miley
  237. physics

    A rubberband has mass 8.5g. The spring constant is 13.0. The rubberband is pulled back 3.4 cm. What is the velocity when rubberband is let go?

    asked by Reid
  238. data

    In how many ways can 12 prizes be divided between 2 people? (combination question)

    asked by help!!
  239. Algebra-Please check my answer

    y= 6x is written as: Choices y = log(6)x x = log(6)y I chose y = log(6)x, correct?I did the inverse so x = 6^x isolate y so it becomes y = log(6)x

    asked by Jesse
  240. 8th grade

    At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for

    asked by Anonymous
  241. physics

    a 2 liter bottle rocket has a thrust phase on .25 sec. The rocket goes straight up, reaches its apex, then plunges straight down. Total time is 8 sec. How do I calculate height, velocity and acceleration???

    asked by karen
  242. grammar

    mark each verb used in bold and in parentheses, identifythe specific tense used in this sentence: "Keeping a grade point average of 2.0 is very important when attending AXIA school for four consult courses in order for financial aid to continue paying your

    asked by Anonymous
  243. AP Government

    I have a few question I need answered, if anyone could help I would really appreciate it... 2. All Presidents but one have been a. Protestant b. Catholic c. Evangelical Christian d. Atheist e. Hare Krishna 16. A mid term election is a. A Congressional

    asked by Pablo
  244. Chemistry

    The weak acid HQ has a pKa of 4.89. calculate the [OH-] of .50 M HQ.

    asked by Harry
  245. Chemistry

    What reagent would allow you to distinguish between BaS and NiSO4? (As if using an analysis scheme)

    asked by Molly
  246. chemistry

    If a solution appears to be violet, what range of wavelength would you use for analysis of the solution? How about if the solution was blue-green?

    asked by Jenna
  247. Physics

    A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)

    asked by Linda
  248. COMMERCIAL LAW

    1. WHAT ARE THE MAIN REQUIREMENTS FOR A VALID CONTRACT; 2. WHAT IS THE DIFFERENCE BETWEEN AN OFFER AND AN INVITATION TO TREAT AND WHY IS THE DIFFERENCE IMPORTANT;

    asked by MARY
  249. 8th grade science

    1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?

    asked by jess
  250. geometry

    one radius of a circle is 4 meters long. How long would a different radius of the same circle be?

    asked by iya
  251. math

    You have a loan for $150,000 at 5% on a 30-year mortgage. You plan to pay off your loan in 10 years. Do you want your loan to be figured using the Rule of 78 or the Unpaid Principle Balance Rule?

    asked by Anonymous
  252. Science

    A rollercoaster will be going at a speed of 36 m/s through a loop. To make sure the riders don't experience acceleration greater than 20 m/s2, what should be the radius of the loop?

    asked by Jocelyn
  253. Statistics

    For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size 3.

    asked by Barbara
  254. english

    The mortals are the pygmalion and Aphrodite in the myth of pygmalion is that right? help me please.

    asked by marie
  255. Chemistry

    Explain, in terms of subatomic particles, the difference between S-32 and S-34

    asked by lisa
  256. college algebra

    What is the fundamental theorem of algebra of this polynomial in completed factored form? and how do I graph it? f(x)=x^5-x^4+x^3-x^2+x-1

    asked by lori
  257. chemistry

    what happens to the loosely held electrons when each ion is heated in the flame

    asked by natty
  258. math

    There are 25 students in math class. 15 students are female. What percent of the class is female

    asked by Joe
  259. economics

    Can you help me describe National Debt in 2 paragraphs?

    asked by Marissa
  260. adult education

    Given Data: Total Sales: $912,500 % of customers that take discounts: 40% % of customers that do not take discounts: 60% # of days that cusomers who take discounts pay by: 10 Days # of days that customers who do not take discounts pay by: 40 Days # of days

    asked by Brandye O'Conner
  261. math

    solve for x: 2xcubed+18x=-15xsquared

    asked by rachel
  262. Environmental science

    If You need to feed a village of 100 people and you have only 10 seeds,what would you do

    asked by Daniel
  263. chemistry

    For n = 2, one of the values of l is 0

    asked by Natalie
  264. Accounting-Journal Entry

    Sales for the month were $650,000, 85% of sales were on account. Gross margin is 40% of sales.

    asked by Thara
  265. chemistry

    An unknown weak monprotic acid with the general formula HA has a Ka=5.5 x 10^-7. what is the value of the equilibrium constant that describes the following reaction? A- +H2O = HA +OH-

    asked by Stacey
  266. Fine Art

    2. A process that uses grease and water to reproduce many prints is called a. lithography b. relief c. screen printing d. intaglio A? 4. ______ describes the lightness or darkness of a color. a. Hue b. Intensity c. Value d. Unity C? 5. When gathering

    asked by mysterychicken
  267. physics

    a body of mass 20 kg suspended from a rigid support is rotated on a cylinder of d=20cm calculate moment of force above the axis of cylinder

    asked by dtehseen
  268. 6th grade

    find the unit rate- -it snows 15cm in 3 hours -You pay $53.00 for boks

    asked by tora
  269. English

    what are two important influences on langston hughes. how did these things affect his work?

    asked by Antuan
  270. English

    1. What are they like? -They are brave. 2. What is their presonality like? - They are brave. (Are the questions and answers right and the same?) 3. It is shaped like a fish. 4. They are shaped like fish. (Are both grammatical? What is the part of speech of

    asked by rfvv
  271. Math

    At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for

    asked by 7890-8
  272. Math

    I am less than 100, the sum of my digits is 8. If you divide me by 2, I am an even number. My tens digit and my ones digit are the same. What is the answer

    asked by Alberto
  273. chemistry

    The red line in the Helium spectrum is longer than the red line in the hydrogen spectrum. What does that tell us about the distance between n2 and n3 in helium as compared with the distance between n2 and n3 in hydrogen?

    asked by help
  274. Physics

    the motion of two students- Mac (starts @ 2m) and Tosh (starts @ 12m) - as they enter and exit the school library during a passing period determine the sppeds at which the two students move than determine how much faster the fastest student moves thatn the

    asked by Mary
  275. Spanish

    Need help with this activity: Imagine that in your backpack you have several writing implements, all of which are the same size: 2 lápices, 5 bolígrafros, 3 marcadores. If you pull one out at random, what is the percent probability that it will be a

    asked by mysterychicken
  276. accounting

    Give arguments in favor of following statement. “FIFO method for inventory valuation may increase income tax due as well as showing true financial position of a business with respect to inventory during the period of rising prices.”

    asked by pinki
  277. chemistry

    what happens to the loosely held electrons when each ion is heated in the flame

    asked by natty
  278. healthcare mgt-college

    You are a new administrator at a hospital, the icu & er are suffering a shortage of respiratory therapists, you need to gather information for a meeting with them, what information do you need before the meeting? develop a tactical plan, what are the major

    asked by angie
  279. English

    1. They shape clay like an apple. 2. Clay is shaped like an apple. (Is #2 the passive form of #1?)

    asked by rfvv
  280. english

    For english i need to write a paper of the the slang words used during the civil war. I already have many examples but i cant seem to find history or facts about it. am information that you know would be helpful like origin, history,who came up with the

    asked by hannah
  281. 9th grade algrebra

    Question 21 (Essay Worth 8 points) [2.08] The formula for degrees Celsius is: C = 9 over 5 (F − 32), where F stands for degrees Fahrenheit. Part 1: Solve the formula for F. Show all steps. Part 2: Determine how many degrees Fahrenheit 2 degrees Celsius

    asked by Anonymous
  282. chemistry

    How many moles of negative ions are in 33.7 g of AlF3?

    asked by bobby
  283. college

    The CIO of ABC Health Care wants you to develop an organizational chart for the HIM Department. The chart should portray the groups under each unit and any other staff that work within the various departments. Use the ABC Health Care HIM organizational

    asked by Debra
  284. English

    I really hope you can have a look at the following sentences. 1) My father worked as a production manager (?) for a famous confectionary company. His job involved making new chocolate pralines. 2) My mum works shifts (does shifts?). She is taking the 9 to

    asked by Franco
  285. Math- Precalc

    could someone please help me solve this problem... e^x - 12e^(-x) - 1

    asked by Alex
  286. PHYSICS

    If a goalie faces an 80mph slap shot hit from 40 feet away, how much time is there before puck arrives at the net (5280ft= 1 mile) If the goalie requires half of the above time to complete his move to deflect the puck, how much time does the goalie have to

    asked by JJ
  287. AP Chemistry

    What is the equation for Pour A Rainbow?

    asked by Mick
  288. Chem I

    Calculate the pH of two buffer systems to compare the differences in pH. One contains 1.0 M NH3 and 3.0 M NH4Cl. (Ka of NH4+, is 5.6x10^-10). The other contains 1.0 M NH3 and 5.0 M NH4Cl. (Ka of NH4+, is 5.6x10^-10).

    asked by Natalea
  289. physics

    please help me!! i need to explain what is the easiest angle to lift an object. to use as less newton as possible/ the object will lay on surface that i can state its degree/ the degree that requiers the lowest force needed is 26.91 i found it but my

    asked by moti
  290. english

    we're the one and only primo exemplary, boisterous in a fun groove and rapturous in our own fascinating way. check parallelism???? tnx

    asked by maya
  291. Geometry

    Please imagine a triangle here. >.< the 'o' is a person and the two peaks are the mountains. /\___/\ _\___/ ___o Explain why the distance between these two peaks are greater than the difference of the distances from the person to each peak.

    asked by jen
  292. 8th grade science

    1.) How does reading across a periodic table compare and contrast with reading down a group on the periodic table?

    asked by jess
  293. chemistry

    we add 100 ml of water at 20 degrees celcius to 10g of an unknown substance which is at 50 degrees celcius. The water ends up at 25 degrees celcius. how much heat was transfered?

    asked by Anonymous
  294. chem

    i had posted this question about a week ago and had gotten help from bobpursley(thank you so much btw) but i was showed how to do it using an equationa and now when im studying for the test i realize i need to be able to make a conversion factor to solve

    asked by hannah
  295. English

    Posted by rfvv on Monday, November 15, 2010 at 8:41pm. 1. What are they like? -They are brave. 2. What is their presonality like? - They are brave. (Are the questions and answers right and the same?) 3. It is shaped like a fish. 4. They are shaped like

    asked by rfvv
  296. Chemistry

    Name these compounds (^these are symbolize subscripts) 1. CoCl^3 2. CrF^6 3. AgBr 4. Fe^20^3 5. CrF^3 6. TiCl^4

    asked by David
  297. science

    If Sally is pulling a toy car with mass of 20g with a force of 7N, what is the car's acceleration?

    asked by klk
  298. Chem

    Determine the number of moles of silver chloride formed when three moles of sodium chloride are reacted completely with silver nitrate

    asked by JJ
  299. calculus

    use &-e to prove the following lim x^2-9/x+3 = -6 x->-3 please help me i really need help:( the & stands for delta and e stands for epsilon

    asked by pinki
  300. trig

    secant theta = square root of seven over two and cosecant theta is less than zero

    asked by Anonymous
  301. Life Science

    Is interphase a step of mitosis or a preparation of mitosis? Then explain what interphase does.

    asked by Bridgett
  302. Math

    How do you get the general term for a sequence that has increasing common differences? For example: 1,2,4,7,11

    asked by Emily
  303. Gr.12 Data Mangement!!!!

    In how many ways can 12 prizes be divided between 2 people? (combination question)

    asked by nonono help!
  304. chemistry

    For all deexcitations that result in the visible spectrum of hydrogen, what is n ?

    asked by help
  305. English

    Hi I am doing an article on why I think humans should not eat meat from the perspective of a parent with a child. I need three solid arguments for this; please help.

    asked by Serena
  306. internet rtesearch

    If you are using the Internet and Web resources for a business publication, under which conditions is it not necessary to include a citation?

    asked by ron
  307. Science

    Does blood bring cell things like oxygen and digested food?

    asked by Mark
  308. biopsychology

    Explain to little brother or sister how neours and synapses work

    asked by mike
  309. Human Resources

    Name three selection tools that you would consider using to hire a police officer.

    asked by Jonathan
  310. science

    Are all materials in 3d why or why not?

    asked by jason
  311. math

    Two composite numbers greater than 10 who GCF is 1

    asked by Demtrius
  312. Critical Reading

    Elaborate comparisons which are used by advertisers are usually a. fallacies of evidence b. fallacies of language c. newsworthy I am not very sure, I would guess b?

    asked by Michelle
  313. algebra

    What is x/3=7/6

    asked by Sue
  314. english

    In the story of pygmalion and galatea what mortals are involved? Can you explain what they mean . ?

    asked by marie
  315. 9th grade algebra

    Find the value of x so that F(x)=23 I can't figure this out? Could someone help? Thanks.

    asked by Allyson
  316. social studies

    What did the northern states want when the 13 new states wanted to change the Articles of Confederation to a Constitution?

    asked by Eliot
  317. 8th grade science

    What experiments or activities are unacceptable to do with seeds

    asked by Daniel
  318. math

    5 + _____< 15, 19 - _____ < 12, and 27 + _____ > 30... need to find 3 whole numbers that make each of these number sentences true.

    asked by shy
  319. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by Katherine
  320. com 156

    i understand that media has changed our culture by making things easie to access and that we have became more reliable on the internet. even after reading my chapter i still do not understand what they are expecting me to put for how it has changed

    asked by ruby
  321. algebra

    which of the following is true about the polynomial f(x) = x3 + 9x2 + 24x + 16 ? a. -1 is a zero b. 1 is a zero c. -2 is a zero d. 2i is a zero

    asked by Math is TOUGH
  322. Math

    a deck of cards haa 52 cards. in it has 4 of {aces,2,4,3,4,5,6,7,8,9,10,queens,kings,and jacks well you know} what is the probability of getting 4 aces at a time? express your answers as a common fraction. ps. the answers 4/52 or simplfied is not the

    asked by Cindy
  323. 7th grade

    unable to get a book on frankenstein for homework tonight need answers on these questions. what do the three men tell the judge? who did they murder in the water? who is responsible and how did they do it? what happens to frankstein when he sees the dead

    asked by Susan
  324. business

    describe why it is important to consider each domain in the study of adult development

    asked by Sue
  325. math

    jared spent 76 dollars in june. In july he spent 1/5 more money than he did in june which procedure can be used to determine the money he spent in july add 1/5 abd 75 multiply 1/5 abd 75 then add 75 multiply 1/5 and 75 divide 1/5 by 75 then subtact the

    asked by Abby
  326. math

    the boiling point of water is 100 degrees celsias or 100 lttle zero c.what is this tempature in degrees fahrenheit?

    asked by lily
  327. Statistics/Math- Please Help

    When comparing two independent population means, how do I find the degree of freedoms?

    asked by jane
  328. Chemistry

    How would the electronegativity and first ionization energy values of lithium compare with the same values of oxygen? Why?

    asked by alicia
  329. math

    Betty buys 16 balloond for her friend. At the rate given in the sign below how much does she pay in $ and cents A dozen ballons for $4.80

    asked by Cody
  330. math

    having a little trouble following the steps to complete this problem. Rewrite each expression with a positive ration exponent. Simplify if possible: 16^-3/4

    asked by marco
  331. math

    what is linear measure and precision

    asked by Brianna
  332. Algebra

    What is the simplified form of the expression? (y^-5)-10 -5 and -10 are exponents

    asked by Daniel
  333. music

    what the definite for music

    asked by michele
  334. algebra

    4/7+n/12 what is n

    asked by bubba
  335. algebra

    how do you get the ordered pair (22,-28) from the equation: 2a+b=16?

    asked by teri
  336. Critical Reading

    A useful strategy for identifying and analyzing arguments consists of 1) underlining all signal words 2) locating the conclusion, and 3).. a. locate premises b. identify all bias words c. locate fallacies I think it is c?

    asked by Michelle
  337. 8th grade

    On the last school day of the first grading period Michael learns his final grade for each class. If order is not important and we know he has earned at least 1 of each of the 5 letter grades, what is the total number of combinations of 7 final grades (one

    asked by Anonymous
  338. Math

    Rae runds a mile 20 times. Her average time is 5.2 mins. She wants to drop her slowest time 5.8 mins and find the ew average. Write and equation to find are her new average running time

    asked by Abby
  339. math

    If the perimeter of a shape is 16 what would be the equation for the perimeter of this shape

    asked by Parris
  340. edu 310

    What are the major issues that perpetuated the evolution of the American education system in the United States? How did they impact the changes that have taken place

    asked by Anonymous
  341. math

    You've received an invoice for $3,000 with terms of 3/10, 1/20, n/30. How much will you have to pay if you pay the bill in 12 days?

    asked by Anonymous
  342. 3rd

    what is a good number sentence with two expressions that equal each other?

    asked by shy
  343. Pre-algebra

    So 7t = -98. What is t?

    asked by Abby
  344. poetry

    What is the meaning of the phrase "steal the secret of the sun"

    asked by Katrina
  345. Math

    Andy and Cathy run for class president. There were 598 votes but 36 of the votes were with drawn. How would I write an equation that could be use to find n the number of votes that represent a tie?

    asked by Mark
  346. English

    Franscisco thanked to the driver to get work. (Is this a correct sentence?)

    asked by rfvv
  347. media and culture

    i know that media convergence is taking things and making putting it together as one service. like bundling cable internet and phone. but i do not get how this has impacted our culture!

    asked by ruby
  348. Science

    If James pushed a box with the acceleration of 25 m/s2 with a force of 50N, what is the mass of the box?

    asked by klk
  349. Debating help

    between order and freedom? why order is considered more valuable than freedom? vice versa?

    asked by Anonymous
  350. Science

    Does blood bring cell things like oxygen and digested food?

    asked by Mark
  351. Science

    Does blood bring cell things like oxygen and digested food?

    asked by Mark
  352. Science

    Does blood bring cell things like oxygen and digested food?

    asked by Mark
  353. algebra

    ãx8y5

    asked by chris
  354. math

    Sevnety-eight players entered a single elimination tennis tournament.How many matches were played to determine the overall champ? please help me...and if u get the answer can you explain how you got it with a rule or a pattern

    asked by Katherine
  355. CHEM

    What reactions does Br- have, ones that would distinguish it as a anion? As in a anion analysis scheme?

    asked by Molly
  356. social studies

    Island country in the Pacific Ocean that was owned as an imperialist colony of Great Britain in the 1800's?

    asked by tony
  357. English

    The man said,"I want you to weed this garden." (This garden seems to belong to the man.) Q: What did the man want Francisco and his grandpa to do? 1. He wanted them to weed a garden. 2. He wanted them to weed the garden. 3. He wanted them to weed this

    asked by rfvv
  358. English

    1. I lied that you were a fine gardener. 2. I told him that you were a fine gardener. 3. I lied and told him that you were a fine gardener. ( #1 plus #2 is #3? Right?) 4. I lied. 5. I told him that you were a fine gardener. 6. I lied and told him that you

    asked by rfvv
  359. math

    The first angle of a triangle is 24 more than the second. The third angle is twice the first. Find the measure of the angle of the triangle.

    asked by dan
  360. Math

    Originally priced ar 35 dollars now on sale for 25% find an proportion to find d. d/35 = 25/100

    asked by Abby
  361. 5th grade science

    blank a type of material that tries to prenent the flow of thermal energy.

    asked by brittany
  362. math

    y=-3x+2 x -3 -2 -1 0 1 2 3 y 11 8 5 2 -1 -4 -7 Two question- Where is the slop in the equation? How can you tell the slope in the table

    asked by john
  363. math

    (2/hn^9)^2

    asked by Daniel
  364. math

    (2/5n^9)^2

    asked by Daniel
  365. math

    What is the solution of the given equation? 12;8t=96?

    asked by Jessica
  366. MATH HELP ME 1st

    find the mean. -46,-33,0,11

    asked by lily
  367. materials

    are all materials in 3d?

    asked by jason
  368. math

    when might you want to use a scale on a graph that does not start at 0

    asked by Katherine
  369. social

    indira gandhi twenty principals

    asked by Anonymous
  370. math

    (y plus 5)y^2 - 5y plus 25)

    asked by will
  371. math

    (y plus 5)y^2 - 5y plus 25)

    asked by will