1. Chemistry

    Can someone please explain how to solve this problem. Thank you very much. A chunk of silver has a heat capacity of 42.8 J/degrees C. If the silver has a mass of 181 grams, calculate the specific heat of silver. Heat capacity is 42.8 J/C for 181 g. What

    asked by Allyssa on July 19, 2007
  2. Algebra

    I know what the answer is just not how to exopress it. Can someone help me please? State the domain of the function: f(x)(2+x)/(3-x) Now I know the domain is (-infinity,3) U (3, infinity)? (-infinity,3] U [3, infinity) ? How do I express it? do I use ]

    asked by Cassie on July 27, 2009
  3. Algebra

    I know what the answer is just not how to exopress it. Can someone help me please? State the domain of the function: f(x)(2+x)/(3-x) Now I know the domain is (-infinity,3) U (3, infinity)? (-infinity,3] U [3, infinity) ? How do I express it? do I use ]

    asked by Cassie on July 27, 2009
  4. math

    1. The cost of a regular price to Saint Louis Cardinal baseball was $60. During the World Series, the price increased by 2/5. What did the fans pay? A. $65 B. $84 C. $80 D. $69 my answer is D 2. Abby is touring China for four days. The rental is $38.15 per

    asked by Kim on May 22, 2014
  5. PHYSICS HELP

    A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of

    asked by Anonymous on November 17, 2013
  6. Physics Classical Mechanics

    A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of

    asked by Anonymous on November 14, 2013
  7. Physics

    A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An inextensible string of negligible mass is wrapped around the pulley and attached on one end to block 1 that hangs over the edge of

    asked by Chelsea on November 24, 2013
  8. Chemistry

    If 10.0g of CaCl2 and 10.0g of NaCl are dissolved in 100.0mL of solution, what is the concentration of chloride ions? I found the molar mass of CaCl2 is 111.0g/mol; the molar mass of NaCl is 58.44g/mol. I divided 10g CaCl2/111.0g CaCl2 I divided 10g

    asked by Casey on July 12, 2010
  9. Math

    Jane will receive 18% less of her regular pay when she retires. Her regular pay is $500 per week. a How much would she receive per week if she retires today? answer: 500/18% = 90 500-90= $410 b. Explain how you can make this same calculation using

    asked by John on March 26, 2015
  10. chemistry

    Hello, ((((((I need the answer in a hour from my posting))))) I have been posting this problme for four days ago, so please show Sympathy. I solved it but I want to be 100% su ...there is moreshow problem Hello, ((((((I need the answer in a hour from my

    asked by Cheimie on November 5, 2009
  11. English

    I corrected sentence 3 as you told me. I just wanted to know if sentence 2 is possible and if "tollbooth" is used. 1) I usually ride my bike to school. My father drives his car to work. You can drive at 50 kilometers per hour on an Italian urban road. 2)

    asked by Henry2 on September 29, 2011
  12. English/Reading

    I need 3 examples of metaphors and personification in the Book I am Regina by Sally M. Keehn Please tell us what you've found, and we'll be glad to critique your answer. I cannot, since I haven't ever read that book, but there are excellent explanations of

    asked by ReJeana on April 10, 2007
  13. math

    Three of these puzzles have more than one answer. Try to find all the possible answers for each puzzle. One of these puzzles is impossible. 1.My number is a factor of 20.It's also a factor of 30. 2.My number is a multiple of 10.It's also a factor 45. 3.My

    asked by phil on September 11, 2008
  14. math

    three of these puzzles have more than one answer. try to find all the possible answers for each puzzle one of these puzzle is impossible. 1.my number is a factor of 20. it's also a factor of 30. 2. my number is a multiple of 10. it's a factor of 45. 3. my

    asked by phil on September 11, 2008
  15. Electric forces

    An electron is released above the earth's surface. A second electron directly below it exers just enough of an electric force on the first electron to cancel the gravitational force on it. Find the distance between the two electrons. I thought if I just

    asked by Sara on April 11, 2007
  16. Calculus help and please check answer for a)

    The decay of a certain substance is modeled by the function N(t)=100(3+e^(-t/3), where the number of particles is represented by N in a time of t hours. a) what is the initial number of particles? - I set t as 0 and got an answer of 400 particles initially

    asked by Sara on February 13, 2015
  17. Physics

    A ball of mass 0.6 kg, initially at rest, is kicked directly toward a fence from a point 20 m away. The velocity of the ball as it leaves the kicker's foot is 17 m/s at angle of 45 degrees above the horizontal. The top of the fence is 6m high. The ball

    asked by Sarah on October 6, 2015
  18. math

    Two Rhombuses of the equal length and width of 10 inches each and height of 7 inches are drawn inside a quarter-circle of radius 18 inches as shown in the figure below. (a) find the perimeter of each of the Rhombuses. (b) Find the perimeter of the

    asked by rosland on January 10, 2009
  19. physics question

    If you are asked to calculate the accleration due to gravity, is that not a trick question? We did an experiment similar to Galileo's (cart down a ramp and measure time, distance, acceleration, and at diferent inclinations)...but if asked to find the

    asked by McHelpme-URGENT on September 17, 2007
  20. math116 appendix e

    4. The line represents an estimate of the average cost of gasoline each year. The line estimates the price of gasoline in January of each year (“Consumer price index,” 2006). a. Do you expect the lines to be intersecting, parallel, or perpendicular?

    asked by sandy on July 15, 2010
  21. classical mechanic

    A small cube of mass m1= 1.0 kg slides down a circular and frictionless track of radius R= 0.4 m cut into a large block of mass m2= 4.0 kg as shown in the figure below. The large block rests on a horizontal and frictionless table. The cube and the block

    asked by juanpro on January 10, 2014
  22. Math

    Please explain in a more simple way, what I''m supposed to do? If you are unable to submit your answer to question 1 in audio form, you may submit your answer here. What are the steps to solve this problem? 0.000027 ÷ 0.000009 Prepare your response to

    asked by BleakTuber on December 5, 2018
  23. To Desire

    Your posts have been removed, mainly because you have given absolutely no thought to how you'll solve those problems in your assignment. In the future, please remember these things: 1. This is a homework help website; please put your subject (math,

    asked by Writeacher on November 28, 2009
  24. physics

    A 0.400 glider is moving to the right on a frictionless, horizontal air track with a speed of 0.800 when it makes a head-on collision with a stationary 0.150 glider.Find the magnitude of the final velocity of first glider if the collision is elastic. Find

    asked by lorena on October 27, 2011
  25. science

    Which option correctly defines a scientific theory? a scientist’s best guess, or assumption, about the cause of a problem an explanation for observable facts that is supported by experimental evidence a process of carrying out specific, well controlled

    asked by Bri on May 3, 2018
  26. science

    Which option correctly defines a scientific theory? an explanation for observable facts that is supported by experimental evidence a scientist’s best guess, or assumption, about the cause of a problem a process of carrying out specific, well controlled

    asked by Bri on February 23, 2018
  27. TI-83 CALC PROGRAM

    Please can anyone help me with this or any part of it? Be very grateful as left it too late... Write a program for ti-83 calculator which generates and displays integer values for A, B and C between 1 and 10; • requests the student to input the solution

    asked by Jo on June 14, 2010
  28. science

    Which option correctly defines a scientific theory? an explanation for observable facts that is supported by experimental evidence a scientist’s best guess, or assumption, about the cause of a problem a process of carrying out specific, well controlled

    asked by Bri on March 5, 2018
  29. math

    Ok, so when you are solving an equation, and you have an answer such as 5x=0 , does that mean that it is no solution or all real #s? And, when the answer is 4=4 , does that mean it is no solution or all real #s? And when the answer is 2x=2x, does that mean

    asked by K on May 7, 2013
  30. geometry

    1. Initial point: (0, 0); Terminal point: (3, -4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial point: (3, 5); Terminal point: (-2, -1) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 In problems

    asked by Cam on December 7, 2011
  31. Physics

    A baseball is hit by Aaron Judge, a New York Yankees baseball team member, at an amazing velocity of 110 miles/hour at an angle of 35 degrees from the horizontal from home plate in Yankee Stadium in New York City. The baseball was initially launched from

    asked by Brittany on October 3, 2017
  32. Algebra 2

    1. Find the midpoint and the distance between the points (8,–6) and (13, 4). 1. (4, –3), 10 units 2. 3. 4. (10, –1), 9 units 2. Find the vertex and the focus of the parabola with the equation 4y = x2 – 12x + 52. 1. V(6, 4), F(6, 5) 2. V(6, 4), F(7,

    asked by Ben on June 4, 2011
  33. algebra

    Find an equation for the line parallel to y=2x-7 with y-intercept(0,6). Write the answer in slope-intercept form. The equation of the line in slope-intercrpt form form is

    asked by Nancy on January 3, 2016
  34. Math

    The difference between two numbers is 33. If three times the larger number is subtracted from six times the smaller number the difference is 18. Find the smaller number. 6n-3(n+33)=18

    asked by PLEASE CHECK MY ANSWER ASAP! on April 23, 2016
  35. geo

    Which statement about fishing in russia is TRUE? A)Russia's salmon catch is decreasing B) All of the fishing industry depends on sturgeon C) fishing is important to the econonmy despite polluted waterways. D) Russia's fishing exports double every year.

    asked by henry on September 2, 2009
  36. analogies

    i need to no if these analogies are like part to hole, function cause to effect and stuf like that (adequate:excellent) Here are some websites that can help you: http://www.google.com/search?hl=en&q=analogies After you've had a chance to read through some

    asked by aladian on February 19, 2007
  37. teachers aide

    how would a student who has a mistaken goal of getting attention act? (a)the student would be hostile ans violent (b)the student would stop for a while and then repeat the behavior (my answer) (c)the student would refuse to stop the misbehavior (d)the

    asked by susue on August 25, 2011
  38. Math

    1. (5yd 2ft) + (7yd 1ft) = ? 2. (6mi 10ft 4in) - (4mi 8ft 8in) = ? 3. 5(2yd 10in) = ? 4. What is the square root of 36/49? My Guesses: 1. 13yd 2. 10mi 18ft 12in 3 and 4. I have no idea. 3. 10yd 25 inches It gives 4 choices but 10yd 25in is not 1 of them...

    asked by Chris on June 29, 2007
  39. STATS

    At an outpatient mental health clinic, appointment cancellations occur at a mean rate of 1.60 per day on a typical Wednesday. Let X be the number of cancellations on a particular Wednesday. a) What is the probability that no cancellations will occur on a

    asked by Helen on October 30, 2010
  40. Phil103 Informal Logic

    1. Question : "~ P v Q" is best read as Student Answer: Not P and Q INCORRECT It is not the case that P and it is not the case that Q CORRECT It is not the case that P or Q It is not the case that P and Q Instructor Explanation: The answer can be found in

    asked by ANSWERS on June 23, 2013
  41. Math

    I posted this problem last night and someone answered. I followed all the steps that this person told me to do and I don't get the right answer. The right answer is suppose to be $23.54. What am I doing wrong? For groups of four or more diners, many

    asked by Lana on February 13, 2010
  42. Statistics

    Please help, I do not understand how to do this: Let x be a random variable that represents white blood cell count per cubic milliliter of whole blood. Assume that x has a distribution that is approximately normal, with mean μ = 7400 and estimated

    asked by Amy on November 17, 2016
  43. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

    asked by AJ on October 5, 2012
  44. math

    Correction of problem submiited earlier. The amount P of pollution varies directly with the population N of people. City A has a population of 494,000 and produces 260,000 tons of pollutants. Find how many tons of pollution we should except City B to

    asked by Kai on December 17, 2011
  45. math

    If everyone had the same body proportions, your weight in pounds would vary directly with the cube of your height in feet. Assume the average height and weight of a female in your math class is 5'5" and 150 pounds. Use this information to write a variation

    asked by montrey sanon on January 25, 2012
  46. Calc

    Gloria would like to construct a box with volume of exactly 55ft3 using only metal and wood. The metal costs $12/ft2 and the wood costs $9/ft2. If the wood is to go on the sides, the metal is to go on the top and bottom, and if the length of the base is to

    asked by Coc on November 4, 2015
  47. Physics

    A variable-length air column is placed just below a vibrating wire that is fixed at the both ends. The length of air column open at one end is gradually increased from zero until the first position of resonance is observed at 20 cm. The wire is 115.4 cm

    asked by AJ on October 1, 2012
  48. Finite Math

    If everyone had the same body proportions, your weight in pounds would vary directly with the cube of your height in feet. Assume the average height and weight of a female in your math class is 5'5" and 135 pounds. Use this information to write a variation

    asked by MacKayla on February 5, 2019
  49. Need to learn how to . . .

    I need to learn how to do the following problems. Don't give me the answer but give me the steps leading to the answer then I will respond back with the answer. say if you had a problem that said: tickets to a game were sold for $2 for each adult and 0.75

    asked by krazikool on August 25, 2005
  50. L.A 8TH

    For each pair of shapes, decide whether they are congruent, similar, or neither. Choose the best answer. Congruent Similar Neither Two side-side-side triangles are shown. Each side of one triangle is equivalent to the corresponding side of the other

    asked by BruteForce on January 17, 2018
  51. Calculus/Algebra

    Let the demand and supply functions be represented by p=D(q) and p=S(q), respectively, where p is the price per item in dollars and q is the quantity of items. D(q) = 42-.03q S(q) = .02q -20 Find the equilibrium price. Hint: you will first find the

    asked by Sam on January 28, 2013
  52. e-commerce

    I want to prepare a questionnaire for e-commerce project to find if there is a need for e-tutoring program. Please help me to find a sample of questions to the parent, student and teachers.

    asked by Huda on October 24, 2010
  53. American History

    what was the colonial empire of Spain, France and England's political control like? I cant find this i my book and thought i could before and I googled it but could not find what i needed could some one help with this?

    asked by KK on December 16, 2016
  54. summery

    my teacher told me to find something funny about brooklyn. i spent 2 1/2 hours in looking for it but couldn't find anything. plssssssssssss u must help me im getting tierd of looking at the computer screen.

    asked by jake on June 23, 2013
  55. AP US history

    In the early 1700's, what problems did the Connecticut river valley colony have? and what disadvantages of the area did they find? I've been looking everywhere but this was after the Pequot war and I can't find anything. Thanks so much!

    asked by anonymous on September 27, 2009
  56. Algebra

    Hi, Any help on this would be very much appreciated. The graph y=3x^2+6x+9 is a parabola, I need to use algebra to find the equation of the axis of symmetry, I then need to use this information to find the coordinates of the vertex. Any ideas? Many thanks

    asked by Sam on June 30, 2010
  57. calculus

    Find an equation of the tangent line to the curve at the given point. y= (1+3x)^12 , (0,1) and find y' and y" y=cos(x^2) I got y' = -2xsin(x^2) i keep trying to get double prime but everything i try isnt working.

    asked by michelle on October 8, 2012
  58. math

    f(x)=12x^5+45x^4–80x^3+2 the question asks to find the inflection points but i don't seem to understand how to find this even by taking the second derivative.

    asked by rudy on May 29, 2008
  59. algebrae

    joey and three of his friends go to the movies. Each ticket costs $7.25. Write an algebraic expression to find to find the total cost of the tickets.

    asked by joseph on August 12, 2013
  60. POLYNOMIALS

    I'm really sorry, i'm preparing for O levels, so i have a lot of maths questions to ask... please excuse me... Question: Find the value of k for which a-3b is a factor of a^4 - 7a^2b^2 + kb^4. Hence, factorise completely. How do i even find k??? Please

    asked by Aoi on June 15, 2009
  61. physics

    Here is a problem: If i have a wire that is 75.0cm long and 0.550 mm in diameter and it has a 25 kg weight attached. I am trying to find stress and i have the area but I do not know how to find the force?

    asked by sara on November 9, 2009
  62. MATH URGENT

    f(x)=12x^5+45x^4–80x^3+2 the question asks to find the inflection points but i don't seem to understand how to find this even by taking the second derivative.

    asked by rudy on May 29, 2008
  63. Calculus

    Find the value of "f" on the top "9" and in the botton "1" x^2dx using four rectangles of equal width, with each left end-point used to find the height of each rectangle. a) 2(1+9+25+49) b) 2(9+25+49+81) c) 0.5(1+9+25+49) d) 0.5(9+25+49+81)

    asked by Alice on January 23, 2019
  64. Algebra

    The following problem refers to an arithmetic sequence. If a_5=9 and a_14=18. Find the term a_1, the common difference and then find a_24.

    asked by Keonn'a on September 25, 2018
  65. random

    why cant I find a question that I posted earlier? I find it but when I click on it it takes me back to the list of questions asked today, but mine is not there! WHY?

    asked by Molly on January 16, 2018
  66. math

    Let S be the part of the sphere x^2 + y^2 + z^2 = 25 that lies above the plane z = 4. Let S have constant density k. (a) Find the center of mass. (b) Find the moment of inertia about the z-axis.

    asked by Anonymous on December 8, 2014
  67. Math

    Need to find equation for 1250=1200+4-375. Is this possible or impossible. Need to find how to figure these type of questions. This is 3rd grade homework

    asked by Justin on April 24, 2012
  68. basic research

    We are conducting research about the inclination of the college students taking up Education as a curriculum. Now, we need to find theories behind this. Please help me find what is "Aptitude Theory"???

    asked by klarmaesen on December 15, 2008
  69. Algebra 2 / Trig

    Here is the problem that I'm having trouble with: Rewrite each series in a sigma notation and find its sum. 1+.09+.81+... I have no idea how I find the common difference or ratio in that one.

    asked by Mathew on March 15, 2009
  70. math

    can someone please help me with this question. Given the funtion f(x)= 3x-9 a. find the rate of change between the two stated values for x: 7 to 8 b. find the equation of a secant line containing the given points: (7,f(7)) and (8,f(8)) I think I have

    asked by ladybug on September 15, 2012
  71. RE: Math Urgent

    I posted this earlier but I think I phrased it in a confusing way Find g(x) + g(x) if g(x) = {(-4,5), (-2,-3), (0,5), (1,3), (3,-1), (5,5)} and g(x) = {(-3,-2), (-2,6), (-1,0), (1,0), (2,-6), (3,5), (4,0), (6,-2)}. I don't need the whole thing done i'm

    asked by Anonymous on January 21, 2013
  72. Math Help Plz

    The point (3,-8) is on the terminal arm of the angle x. Find sinx exactly and find x, in radians, to two decimal places. I don't how I should start this question. please help and thank you

    asked by Anonymous on March 29, 2012
  73. math

    1.)Name the property that is illustrated. a) 7 „e 6 ƒ­ 6 „e 7 b) 7 ƒy (1 ƒy 9) ƒ­ (7 ƒyƒn1) ƒy 9 2.) a) Identify the base in the following statement b) Solve for the amount. What is 81% of 285? 3.)a) Find the supplement of „£A. b) Find the

    asked by Sammy on April 25, 2011
  74. testing of materials

    Could you please show me how to solve this problem ! A soil sample is 5.08 cm in diameter and 47.3 mm high. Find volume in cm^3. Also find density (g/cm^3) if its mass is 137.33 g.

    asked by michael on February 8, 2011
  75. math

    Find the GCF of the numbers using an appropriate method. 84 and 126 Find the prime factorization of the number, and write it in exponent form. 198

    asked by Anonymous on February 23, 2011
  76. Pre-Cal

    Find the greatest integral upper bound of the zeros for the following function. f(x) = 4x^3 - 2x^2 - 12x + 1 Find the real zero(s) to the nearest tenth. f(x) = 2x^3 + x^2 - 1 [I believe the numbers should be around -1 and 0 and 0 and 1.]

    asked by Lauren on October 22, 2008
  77. calculusiii

    Let S be the part of the sphere x^2 + y^2 + z^2 = 25 that lies above the plane z = 4. Let S have constant density k. (a) Find the center of mass. (b) Find the moment of inertia about the z-axis.

    asked by Anonymous on April 28, 2013
  78. math

    1)Find a1 in a geometric series for which Sn=300,r=-3,and n=4 A)15 B)15/2 C)-15 D)1/15 I chose A 5)Find the fifth term of the sequence in which a1=-3,and aN+1=3aN-n A)-301 B)-99 C)-193 D)-341 I don't know

    asked by Jon on December 13, 2007
  79. physics

    A solenoid of radius 2.30 cm has 380 turns and a length of 15.0 cm. (a) Find its inductance. (b) Find the rate at which current must change through it to produce an emf of 76.0 µV

    asked by Anonymous on November 12, 2012
  80. Calculus-Regressions

    How do you find the best and simplest model given a table of data? I know how to find a specific regression (linear, cubic ect...) but i'm lost when it comes to choosing the best one.

    asked by Sarah on December 25, 2012
  81. Calculus

    Find the value of f on the top "9" on the bottom "1" x^2dx using four rectangles of equal width, with each left end-point used to find the height of each rectangle. a) 2(1+9+25+49) b) 2(9+25+49+81) c) 0.5(1+9+25+49) d) 0.5(9+25+49+81)

    asked by Alice on January 12, 2019
  82. math

    suppose x S f(t) dt= x^2 - 2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do and i didn't make any typos.

    asked by bex on December 1, 2007
  83. calculs

    Find the volume when the plane area bounded by y=-x^2-3x+6 and x+y-3=0 is revolved about (1) x=3 and (2) about y=o B. Find the volu6 of focus generated by revolving the circule x^2+y^2=4 about the line x=3

    asked by archaeology khan on March 18, 2017
  84. math

    suppose x S f(t) dt= x^2 - 2x + 1. Find f(x). 1 S = integral and 1 = lower level, x = upper i don't understand what i'm supposed to find/what to do and i didn't make any typos.

    asked by zee on December 1, 2007
  85. trig

    my question is find all angles of theta and 2pi whose reference angle is alpha = pi/12. Give exact answers. i cannot for the live of me find this

    asked by patrick on September 15, 2012
  86. hsa practice

    when giving a table and they ask for an equation i know how to find the slope by picking to points and doing the formula y2-y1/x2-x1 but how do you find the y-intercept when they don't give you any pints with (0,?)

    asked by anonymous on May 18, 2013
  87. Algebra

    The following problem refers to an arithmetic sequence. If a_5=9 and a_14=18. Find the term a_1, the common difference and then find a_24.

    asked by Keonn'a on September 25, 2018
  88. business math

    How do you find the amount deducted from Social Security and Medicare from a check? How do you find a percent of a noninterest simple discount note?

    asked by andrea on November 27, 2011
  89. Math

    Jake can carry 6 1/4 pounds of wood in from the barn. His father can carry 1 5/7 times as much as Jake. How many pounds can Jake's father carry? Answer: 1 3/28 Can you please double check the above answer. I don't know if it is right or wrong. 2. A glass

    asked by Patrick on February 17, 2016
  90. Physics

    A 16.0 - kg descends a slide 2.50 m high and reaches the bottom with a speed of 2.25 m/s. How much thermal energy due to firciton was generated in the process? for this I keep on getting 432.5 J but the back of the book tells me that the answer is 352 J

    asked by Joe on January 12, 2010
  91. physics

    Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

    asked by Jezrell on July 3, 2012
  92. physics

    An electron has a kinetic energy of 4.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 3.3 x 10-5 T. Determine the radius of the path. The electron in the problem has Charge of the electron (q) =

    asked by Determine the radius on April 3, 2009
  93. Calculus

    The components of a position vector of a particle moving in the plane are components t cubed, 2 times the sine of t. What is the distance traveled by the particle from t = 1 to t = π? Type your answer in the space below and give 3 decimal places. If your

    asked by Alice on April 8, 2019
  94. Algebra

    In a science competition with ten problems, a student gets 5 points for a correct answer and loses 2 points for an incorrect answer. If Alice answered every problem and her score was 29, how many correct answers did she have? i'm thinking you have to set

    asked by Yomna on August 12, 2015
  95. Physics

    Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

    asked by Jezrell on July 3, 2012
  96. Chemistry

    The freezing point of ethanol is -114.6 C and its Kf value is 2.00 C/m. What is the freezing point for the solution prepared by dissolving 50.0 g of glycerin (C3H8O3) in 200.0 g ethanol? I used Change in temp=Kfm kf=2.00 I calculated m to be 2.1736. I

    asked by Lauren on February 13, 2013
  97. Physics

    TORQUE, ROTATION AND TRANSLATION A Yo-Yo of mass m has an axle of radius b and a spool of radius R . Its moment of inertia about the center can be taken to be I=(1/2)mR2 and the thickness of the string can be neglected. The Yo-Yo is released from rest. You

    asked by Anon on November 24, 2013
  98. Math

    Why can't the slope of a line be expressed as a decimal or a fraction? The slope of a line should be expressed as a fraction. The formula is Rise over Run. Rise is how much further up u go and run is how much further across do u go. Does that answer your

    asked by Harry on October 27, 2006
  99. Chemistry

    A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per gram of oxygen. (a) Using the law of Dulong and Petit (Cp x M = 25 J*mol*K), estimate the molar mass of the metal M [Answer: _____

    asked by . on October 29, 2009
  100. Chemistry

    A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per gram of oxygen. (a) Using the law of Dulong and Petit (Cp x M = 25 J*mol*K), estimate the molar mass of the metal M [Answer: _____

    asked by . on October 22, 2009

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