1. Math

    Sketch the region enclosed by the lines x=0 x=6 y=2 and y=6. Identify the vertices of the region. Revolve the region around the y-axis. Identify the solid formed by the revolution calculate the volume of the solid. Leave the answer in terms of pi. I always

    asked by SkatingDJ on May 6, 2016
  2. Physics Plans Project (11th Grade)

    I'm doing a physics project where I have to find plans for a device and then build it and type a report demonstrating the physics behind it. However, the materials can't cost more than $75 total. I'm having trouble finding any plans, especially ones that

    asked by Steve on February 11, 2009
  3. Question (plz read)

    If you publish your work on lulu will it be in stores?? I was reading this website Self Publish a Book on lulu Step by Step after I watch the video, I'm wondering since my book will be sold all over the world (that what is said in the video) will it be in

    asked by Laruen on July 22, 2012
  4. math

    An initial-value problem is given by the differential equation, f(x,y)=x(1-y^2), y(1)=0.07 Use the Euler-trapezoidal method with a step-size h = 0.1, to obtain the approximate value of y(1.1). Give your answer to 4 decimal places.

    asked by enigma on September 26, 2012
  5. chemistry help anyone

    use Rydbuz equation to calculate the wavelength of the third line in the paschen series of the hydrogen spectrum.give ur answer in Nm. RH=2.18 * 10^-18j, H=6.63 * 10^-34J. Step plz

    asked by weryiyemi on March 29, 2017
  6. Math 10

    Hello, I did this question for homework, but my teacher said it was wrong and she didn't explain how it was supposed to be done. So could you please tell me how I am supposed to do this step by step? "A baseball is thrown from the top of a building and

    asked by Samantha on April 13, 2014
  7. maths

    Starting with x0 = 0 (x0 has diagonal 0 that is smaller and towards the bottom) use the iteration formuala xn+1 = 4/ xn^2 +5 twice (for xn+1 the n+1 is smaller than x and diagonal towards the bottom also for xn^2 the n^2 is smaller than the x and diagonal

    asked by supersupersuper on January 3, 2017
  8. AED

    Choose a grade level and a scientific concept appropriate for that level. • Plan a science experiment to explore this concept. In your paper, address the following points: o List the equipment and materials to be included in the science kit. o Explain

    asked by troyer0269 on November 22, 2008
  9. Math: Intersections of 3 Planes

    For what value of "k" will the following set of planes intersect in a line? x - 2y - z = 0 x + 9y - 5z = 0 kx - y + z = 0 Work: Elimination to find "z": x - 2y - z = 0 x + 9y - 5z = 0 ------------------ -11y + 4z = 0 z = 11y/4 Sub "z" into "x - 2y - z = 0"

    asked by Anonymous on March 27, 2008
  10. chemistry

    Calculate the pH from the addition of 10 mL of a 0.10 M NaOH solution to 90 mL of 0.10 M HCl. okay so i understand how to do most of it but i get messed up at one part.. so i made my equation: NaOH + HCl -> H2O + NaCl (strong base, strong acid= complete

    asked by BOB PLEASE HELP!:) on November 8, 2011
  11. AP Chemistry

    We're doing a lab in my class and we're supposed to make a buffer at a certain pH. I have decided to make a buffer with a pH of 5.0 using glacial acetic acid (pure CH3COOH) and sodium acetate. I found that the ratio of acid to base is 1.41 M: 1.0 M and now

    asked by Ana on January 3, 2011
  12. calculus

    A large container has the shape of a frustum of a cone with top radius 5 m, bottom radius 3m, and height 12m. The container is being filled with water at the constant rate 4.9 m^3/min. At what rate is the level of water rising at the instant the water is 2

    asked by Jennifer on November 8, 2014
  13. Chemistry

    The formaldehyde content of a pesticide preparation was determined by weighing 0.3124g of the liquid sample into a flask containing 50.0mL of 0.0996M NaOH and 50mL of 3% H2O2. Upon heating, the following reaction took place: OH- + HCHO + H2O2 -> HCOO- +

    asked by Ellen on March 28, 2012
  14. Calulus/Optimization

    I don't understand how to solve optimization problems, (like here's the volume of a box, find the least amount of material it would take to make such a box). Is there a tutorial or some general step by step instruction on how to do these? Thanks in

    asked by Amy on April 1, 2007
  15. Math

    Freddy and Frankie want to know their grandmother's age. She tells them that the digits of their age make up her age. She also tells them that their age plus her age total 83. What is the age of the grandmother? Please explain this question step by step.

    asked by Kaley on September 17, 2014
  16. Physics

    An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator

    asked by Anonymous on October 4, 2016
  17. Physics

    An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator

    asked by Anonymous on October 3, 2016
  18. earth science

    how can the interactions between the earth systems affect the climate?? any one help me i don't knw where to start and i need to write 700 words on it Step one is to read your S103 course materials rather than try to get someone else to answer it for you.

    asked by angel on April 14, 2007
  19. Math

    List the terms and coefficients. 8x3 – 4x2 + 3 Write using positive exponents only. b–2 Factor completely. 3(x – 2)2 – 3(x – 2) – 6 State which method should be applied as the first step for factoring the polynomial.

    asked by Tomika on May 13, 2007
  20. logic

    Camilo, Diego, Esteban transport on their bikes apples, the way was splitted in two parts to handle the weight. In the first step for each 6 apples that carries Camilo diego carries 5 Esteban 4, in the second step for each 2 apples tath carries Camilo,

    asked by Jhon on January 10, 2014
  21. Chemistry

    I am really lost with this. Calculate the amount of energy released in kJ/mol for the fusion reaction of two 1H atoms to yield a 2H atom and electron: 1/1H+1/1H→2/1H+0/1e The atomic masses are 0/1e (0.0005486 u), 1H (1.00783 u), 2H (2.01410 u), and 3He

    asked by Bob on September 19, 2015
  22. Physics

    A row of seats is parallel to a stage at a distance of 8.70 m from it. At the center and front of the stage is a diffraction horn loudspeaker that has a width of 7.50 cm. The speaker is playing a tone at a frequency of 9600 Hz . The speed of sound is 344

    asked by J on December 9, 2016
  23. Chemistry- Dr Bob

    Dr Bob Can you please assist Redox balancing in BASIC sol. NO2- +Al-->NH3 +Al(OH)4- if you could please walk through step by step. I don't know how to get oxidation #s for Al(OH)4- vs. Al I get Al=0 Al(OH)4-= +3 But if so...then my oxidation half reaction

    asked by Steve on June 7, 2013
  24. Mathe ASAP due really soon

    from midnight to 6:00 AM the temperature rose 8C at 6:00AM the temperature was at -20C what was the temperature at midnight when your tell me the answer can you show how to do it step by step to the answer please thank you!

    asked by TheGruddyHippo on May 8, 2017
  25. Algebra 2

    Can you please explain step by step on how to do this problem? Condense the expression. 2(log base 6 of 15 - log base 6 of 5) + 1/2 log base 6 of 1/25

    asked by Lynn on January 19, 2012
  26. Algebra 2

    Can you please explain step by step on how to do this problem? Condense the expression. 2(log base 6 of 15 - log base 6 of 5) + 1/2 log base 6 of 1/25

    asked by Lynn on January 19, 2012
  27. Help me! Geometry

    A design on the surface of a balloon is 5 cm wide when the balloon holds 71 cm^3 of air. How much air does the balloon hold when the design is 10 cm wide? Explain the method you use to find the amount of air. How would I solve this step by step?

    asked by Alexa on September 28, 2015
  28. Calculus

    Write the statements for the basis, the induction hypothesis, and the induction step for the questions below. 1. 1 + 2 +…+n = n(n+1)/2 2. 1/1*2 + 1/2*3+…+1/n*(n+1) = n/n+1

    asked by Brock on August 8, 2012
  29. Algebra 2

    For the first time customers, a bank will open an account with $25 included. This bank also charges a monthly $2.95 service fee on the account. Write an equation that shows the balance B after m months, assuming no other activity is made on the account.

    asked by Kelsey on October 12, 2013
  30. Math

    So, im doing a math lesson right now and taking notes. one of the examples makes no sense to me. The example is, 4/8+5/12. Here is where it gets confusing. The first step is to, rename the fractions using the LCD, 24. I made the denominator 24. The next

    asked by ILTHSM_ on October 9, 2018
  31. percentage

    There are two distinct natural numbers. Each is first increased by 10 then by same percentage as each was increased for the first time. Each number finally results in 72 Find the difference between the numbers. i have received your answer as your faculty

    asked by vipul on October 5, 2016
  32. English

    We soon found a step in the sand. ---------------- What is the part of speech of 'in the sand'? Is it an adverbial phrase modifying 'found,' or an adjective phrase modifying 'step'?

    asked by rfvv on December 11, 2013
  33. college physics

    Suppose a 69 kg person stands at the edge of a 7.8 m diameter merry-go-round turntable that is mounted on frictionless bearings and has a moment of inertia of 1600 kg*m^2. The turntable is at rest initially, but when the person begins running at a speed of

    asked by Anonymous on March 29, 2010
  34. algebra

    can someone please explain "converting to slope-intercept form" to me please? i've watched countless videos on it and i don't understand how to do these problems. all i really need is an explained step-by-step on how to do these types of problems. all of

    asked by orpheus on November 7, 2013
  35. math

    Stephanie has $67 to spend at a store. The store currently has a sale where the sale price is 23% off the marked price. What is the highest marked price that Stephanie can afford? (Round to the nearest cent, or hundredth of a dollar.) can you please show

    asked by anne on December 11, 2012
  36. Algebra

    A cup of coffee contains about 100mg caffeine. The exponential function A(t)=100(0.84)^t is used to calculate the amount of caffeine in a body t hours after the coffee was consumed. Find the amount of caffeine in the body after 4 hours. Can someone help

    asked by ##000000 on September 17, 2012
  37. Chenistry

    A 0.8870g sample of a mixture of nacl and kcl is dissolved in water and the solution is then treated with an excess of agn03 to yield 1.913g of agcl. Calculate the percentage by mass of nacl in the mixture 1.913g/ 143 = 0.0133 M agcl x/58 + Y/74 (0.887g-x)

    asked by Carlos on January 19, 2014
  38. Chem

    Nitric acid is produced commercially by the Ostwald process, represented by the following equations: 4NH3(g) + 5O2(g) > 4NO(g) + 6H2O(g) 2NO(g) + O2(g) > 2NO2 (g) 3NO2(g) + H2O(l) > 2HNO3(aq) + NO(g) What mass of NH3 must be used to produce 1.0x10^6 kg

    asked by Shawn on January 26, 2007
  39. chemistry

    what is the percentage of water in the hydrate (Na2Co3)(10H20)? step by step and solution please? big quiz today!! step1. find the mol mass of Na2CO3 2) find the mol mass of H2O percent water= [10*molmassH2O / (molmassNa2CO2 +10*molmassH2O) ] *100

    asked by crystine cole on April 12, 2007
  40. Math

    An architect is building a building. Each floor is l0 ft. He wants to build 18 steps with a total run of 14 ft. What is the ratio? What is the slope of each step? The height/run ratio of the staircase is 10/14 = 5/7 Each step is 14/18 feet long (9.33

    asked by Paula on October 19, 2006
  41. I need help please - Pre-Calc

    Using the graph of y=cos(x), list all values of x on the interval [-11π/3,11π/6] that satisfy the ordered pair of (x,-1/radical2). - List all the values of (x,-1/radical2) (Type an exact answer using π as needed. Use a comma to separate answers as

    asked by chizoba on August 2, 2016
  42. Chemistry

    Virtually all the nitric acid manufactured commercially is obtained by the ammonia oxidization process. This involves this first step: Ammonia gas combines with oxygen to form nitrogen monoxide and water vapour. a) Write a balanced equation for the

    asked by Kayla on January 20, 2015
  43. Chemistry

    Calculate the molality (m) of a 6.56 kg sample of a solution of the solute acetone dissolved in the solvent ethanol if the sample contains 1.44 kg of acetone. Additional info: Molar Mass (g/mol) acetone = 58.05 ethanol = 46.07 Density (g/mL) acetone =

    asked by Luc on March 2, 2010
  44. Physics

    A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6° with respect to the hori- zontal, as

    asked by Trouble on October 19, 2014
  45. Physics

    A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6° with respect to the hori- zontal, as

    asked by :( on October 21, 2014
  46. Physics

    A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6° with respect to the hori- zontal, as

    asked by Tiki on October 21, 2014
  47. Physics

    A ball with mass m = 0.210 kg and kinetic energy K1 = 2.97 J collides elastically with a second ball of the same mass that is initially at rest. After the collision, the first ball moves away at an angle of = 30.6° with respect to the hori- zontal, as

    asked by Trouble on October 19, 2014
  48. Geometry

    Describe in words the translation of X represented by the translation rule T < -7, -8 > (X). A. 7 units to the right and 8 units up B. 8 units to the left and 7 units up C. 7 units to the right and 8 units down D. 7 units to the left and 8 units down*****

    asked by Carpe_Diem on March 23, 2016
  49. Math

    A baseball diamond is a square with sides 22.4m. The pitchers mound is 16.8m from home plate on the line joining home plate and second base. How far is the pitchers mound from first base? Step by step please.

    asked by Nikki on October 15, 2012
  50. english

    object of the preposition: A)equal rights C) rosa parks b)important step i think its b. riding the bus one day, rosa parks made an important step toward equal rights.

    asked by henry on July 14, 2009
  51. physics

    A disk with mass m = 5.2 kg and radius R = 0.44 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.59 m from the rope and at a frequency f = 18.6 rev/s (with a direction shown by the arrow). 1. What is the magnitude

    asked by stewart on November 24, 2014
  52. Math

    Write each compound inequality as an absolute value inequality. 1.3 < h < 1.5 Could someone give me the step too? Thanks

    asked by Shadow on September 12, 2011
  53. math

    Ok we have to graph a step function. I am given y=[-5x]. How do I write the chart for this in order to graph it?

    asked by Ray on August 6, 2010
  54. Math

    Solve the system of equations by substitution and explain all your steps in words: 3x + y = 12 x = y − 8 . Is this a good way to explain this problem? Step 1: Since X is given to us. We can plug it into the x-value in the first equation. x= y-8 into

    asked by Josh on March 13, 2019
  55. algebra

    What is the first step to solving the equation: 4(x + 4) = 24 Add 4 to both sides, subtract 4 from both sides, or distribute 4 times x + 4?

    asked by Mudz on May 24, 2017
  56. math ergent please please...

    10.a)Solve the inequality x^3-5x^2+2x+8

    asked by kavi on November 29, 2013
  57. math

    I already know the answer... it's 14. However, I do not know how to get this right answer. Please show me step by step. I have a test tomorrow and there will be a question somewhat like this one on it. Thank you so much!! 1. A physical education class has

    asked by cindi on February 10, 2015
  58. Geometry

    A. Derive the distance formula (d) shown below for points A = (x1, y1) and B = (x2, y2). 2 2 1 2 2 1 d = (x − x ) + ( y − y ) Note: Look for an application of the Pythagorean theorem where the red line, segment AB, is the hypotenuse of a right

    asked by Charlie on June 17, 2013
  59. Calculus

    A road perpendicular to a highway leads to a farmhouse located 6 mile away. An automobile traveling on the highway passes through this intersection at a speed of 55mph. How fast is the distance between the automobile and the farmhouse increasing when the

    asked by Nicole on April 10, 2015
  60. algebra 1

    What is a10 for the sequence (an) = 1 + 3 (n - 1)? i go 28 is that correct? What is a7 for the sequence an = 2 + 5(n - 1)? i got 51 is that right 6x+7/5 = x, how do i find x? 30-x/10 = 2, what's the next step in solving this equation?

    asked by jianna on April 11, 2011
  61. pre-algebra

    x+5/4=3/4x The next step would be obtained by subtracting 3/4 x + 5/4 from both sides. That gives yoju x/4 = -5/4 Now multiply both sides of the equation by 4.

    asked by Geri on March 13, 2007
  62. Physics Gravity

    The earth has a mass = 5.98 X 10^24 kg and the sun has a mass = 1.99 X 10^30 kg. They are separated, center to center, by r= 93 million miles = 150 million km. What is the size of the gravitational force acting on the earth due to the sun? Very confused by

    asked by Mike Joseph on June 16, 2012
  63. CHEMISTRY

    I haven't learned half reactions for oxidation and reduction so please teach me by leading me from step to step.... I don't get this.. Sn2+ +2Fe3+---> Sn4+ +2Fe2+ The answer key says Oxidation: Sn2+--->Sn4+ +2e- Reduction: 2Fe3+ + 2e----->2Fe2+ **where did

    asked by Anonymous on December 9, 2013
  64. Chem

    The mass of a beaker is 5.333g. After 5.00 mL of a concentrated hydrochloric acid solution is pipetted into the beaker, the combined mass of the beaker and the hydrochloric acid sample is 11.229 g. From the data, what is the measured density of the

    asked by Amy on September 1, 2015
  65. calculus

    a.) Given y=square root of (x) and y= (x) Find the area between two curves from x=0 to x=1 by integrating with respect to x (top-bottom) I'm more concerned about this one though: b.) Now integrate with respect to y given between y=0 and y=1 Do I just graph

    asked by Jill on May 12, 2011
  66. chemistry need help plzzz tomorrow is a TEST!!!

    phosphoric acid is the active ingredient in many commercial rust-removing solution.calculate the volume of concentrated phosphoric acid (14.6 mol/L)that must be diluted to prepare 500mL of a 1.25 mol/L solution. how can i calulate the volume cocentration

    asked by TARA on December 9, 2010
  67. history

    Explain how the existence of the Confederate government played a role in the development of the current constitution. I feel that the articles of confederation joined the states to gether- uniting America and creating a government that was elected by the

    asked by m on February 25, 2011
  68. Chemistry!!!!!! Please help immediately!!!

    Please show me step by step. Thank you. One commercial method used to peel potatoes is to soak them in a solution of NaOH for a short time, remove them from the NaOH, and spray off the peel. The concentration of NaOH is normally in the range of 3 to 6 M.

    asked by Lilyyyyyyyyyyyy!!!! on March 24, 2013
  69. algebra

    1750 divided by 2 times 1/5 equals x divided by 2/6 is that a 3 step equation and should the answer turn out to be 58.333333333

    asked by anonymous on October 28, 2007
  70. maths quartic equation need help

    the quartic equation x^4+2x^3+14x+15=0 has equal root of 1+2i find the other three root help me show step plz

    asked by philip on September 26, 2016
  71. math

    Could someone help me solve this Absolute Equation? Please? I really can’t figure it out and I would really appreciate any help... Question~~ Evaluate the given expressions when a = 3, b = -3, c = 4, and d = -1 (a/c)|c| + b – d My answer~ (a/c)|c|+b-d

    asked by Abby on October 5, 2015
  72. Algebra

    2x + 3y = 6 What is the question? You cannot solve for both x and y without a second independent equation, but you can express one variable in terms of the other. For example, 2x = 6 - 3y, so x = -3y/2 + 3 solve each literal equation for the indicated

    asked by Tammy Evert on July 7, 2006
  73. Calculus HELP

    Original Function: -cos(3x) Derivative Function: 3 sin(3x) The period for the function and its derivative is 2π/3 radians. Over one period, when is the derivative function equal to its original function? That is, when is f(x) = f '(x) over 0≤x≤2π/3?

    asked by Anonymous on November 20, 2018
  74. Physics

    Alright so I need some help were doing Friction and Centripetal Force A 1250 Kg car traveling at 12 m/s is exiting circular highway exit ramp with a radius of 36 meters then I'm asked to find the acceleration the centripetal force the normal foce which I

    asked by HELP ME! on May 11, 2009
  75. precalculus

    Can you please check my answers? 1.Find Pk + 1 if Pk=2^K-1/k! answer: 2^k+1/(k+1)! 2.Find Pk + 1 if Pk = 7 + 13 + 19 + ...+[6(k - 1)+1] + (6k + 1) answer: 7+13+9...(6k-1+1)+6k+1 +(6k+2) 3.What is the first step when writing a proof using mathematical

    asked by Anonymous on December 14, 2016
  76. Math 4th grade

    I need help on how to work this problem out. I need step by step please. This is the word problem: On Monday, I rode 9 miles. On Sunday, I rode 4 fewer days than on Monday. On Tuesday I rode 2 times farther than Sunday. How far did I ride on those 3 days?

    asked by Lily on May 23, 2017
  77. AED

    List the equipment and materials to be included in the science kit. o Explain what safety precautions are needed. Wear goggles, wear apron, wear gloves, and I am stuck there. o Outline the step-by-step procedures for the experiment. o Determine methods you

    asked by troyer0269 on November 30, 2008
  78. chemistry Who clearlyexplain step by step

    1g of mixture na2c03 and k2c03 was made upto 250ml is aqueous solution. 25ml of this solution was neutralized 20ml of hcl of unknown concentration. The neutralized solution requires 16.24ml of 0.1N agn03 for precipitation Calculate A) the k2c03 is mixture

    asked by Ferda on January 18, 2014
  79. Pre-algebra

    Hey I'm having a lot of trouble with this question. An open box is to be made from a 20 inch by 40 inch piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. A) What size should the squares be in order to

    asked by Anna on February 26, 2017
  80. chemistry Who clearly step by step

    What per cent of free s03 can be obtained from 100g oleum, that is labeled with 113.5% h2s04? To 100 ml of 5M naoh solution density 1.2g/ml were added 200ml of another naoh solution with have a density 1.5g/ml and contains 20 mass percent of naoh. What is

    asked by ken on June 29, 2014
  81. Physics repost

    A 2.00 resistor, and a 12.0 resistor are connected in parallel across a 20.0-V battery. What is the current flowing through the 2.00 resistor? A)1.67 A B)1.40 A C)11.6 A D)10.0 A This is all I understand. Can you explain step by step and show how to get

    asked by Jon on April 9, 2008
  82. math

    A client comes to you for investment advice on his $500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his

    asked by Anonymous on June 29, 2013
  83. math

    A client comes to you for investment advice on his $500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his

    asked by Amber on December 22, 2013
  84. Math

    A client comes to you for investment advice on his $500,000 winnings from the lottery. He has been offered the following options by three different financial institutions and requests assistance to help understand which option would be the best for his

    asked by Amber on December 23, 2013
  85. Pre-cal

    Find the vertex of y^2 + 4y + 2x +10 = 0. Use completing the square to put the equation into standard form as your first step. Could you show me how to get the vertex? Thanks

    asked by Randy on May 6, 2010
  86. physics

    A 82 kg adult sits at one end of a 8.6 m long board. His 23 kg child sits on the other end. Where should the pivot be placed so that the board is balanced, ignoring the board's mass? Find the pivot point if the board is uniform and has a mass of 15 kg.

    asked by Anonymous on April 5, 2010
  87. physics help!

    A tire is filled with air at 17 degreees C to a gauge pressure of 220 kPa. If the tire reaches a temperature of 39 degrees C, what fraction of the original air must be removed if the original pressure of 220 kPa is to be maintained? Please help step by

    asked by Anonymous on May 2, 2010
  88. CHEMISTRY

    I haven't learned half reactions for oxidation and reduction so please teach me by leading me from step to step.... I don't get this.. Sn2+ +2Fe3+---> Sn4+ +2Fe2+ The answer key says Oxidation: Sn2+--->Sn4+ +2e- Reduction: 2Fe3+ + 2e----->2Fe2+

    asked by Anonymous on December 10, 2013
  89. math

    i need help with the domain and range of a step function. the equation is f(x)= 59.99 + .29m thanks What is the m in the function?

    asked by mat on December 18, 2006
  90. Pre-cal

    1) Solve the equation sinx(sinx+1) = 0 I am having trouble with the first step. Could I do sin x^2 + 1 =0?

    asked by Abby on February 23, 2010
  91. chemistry Who helps step by step

    0.887g sample of a mixture of nacl and kcl is dissolved in water. The solution is then treated with an excess agn03 to yield 1.1930of agn03. Calculate the percent by mass of each compound in the mixture agcl = 143g/mol 1.1930/143 = 0.001337 m agcl

    asked by Ferda on January 18, 2014
  92. chemistry Damon helps me step by step

    1g of mixture na2c03 and k2c03 was mole made upto 250ml is aqueous solution. 25ml of this solution was neutralized. 20ml of hcl of unknown concentration. The neutralized solution required 16.24ml of 0.1N AGNo3 for precipitation, Calculate a) the % k2c03 is

    asked by Ken Hung on January 12, 2014
  93. Chemistry-pls help

    I refer to the following question. Is my explanation correct, that step two C6H14(g)--> 6CO2(g) + 7H2O(g) can be considered combustion reaction? Thank you! Posted by jan on Tuesday, March 31, 2009 at 10:28pm. C6H14(l)->C6H14(g) ->6CO2(g) + 7H2O(g)

    asked by jan on April 1, 2009
  94. chemistry

    A possible mechanism for the overall reaction Br2 (g) + 2NO (g) -> 2NOBr (g) is NO (g) +Br2 (g) (equilibrium arrows: on top it says k1 and on bottom k-1) NOBr2 (g) (fast) step 1 NOBr2 (g) + NO (g) ->(on top of arrow k2) 2NOBr (slow) step 2 the question:

    asked by ben on November 18, 2010
  95. financial project

    Five (5) years ago, you bought a house for $171,000, with a down payment of $30,000, which meant you took out a loan for $141,000. Your interest rate was 5.75% fixed. You would like to pay more on your loan. You check your bank statement and find the

    asked by Anonymous on March 2, 2013
  96. math

    Five (5) years ago, you bought a house for $171,000, with a down payment of $30,000, which meant you took out a loan for $141,000. Your interest rate was 5.75% fixed. You would like to pay more on your loan. You check your bank statement and find the

    asked by mary on February 22, 2013
  97. algebra

    Five (5) years ago, you bought a house for $171,000, with a down payment of $30,000, which meant you took out a loan for $141,000. Your interest rate was 5.75% fixed. You would like to pay more on your loan. You check your bank statement and find the

    asked by mary on February 22, 2013
  98. Ske

    If Shella has a pulse rate of 73 beats per minute and a blood pressure of 121 over 85 and this can be modeled by a sinusoidal function, find this equation. Could you explain to me how to do this step please by showing me the steps? Thanks

    asked by trig on May 7, 2009
  99. math,help!!!!

    How do i do thois problem?Please help. Problem #1 solve the system by subtraction. 5x-3y=13 4x-3y=11 Subtract the lower equation's left and right terms from the upper equation's corresponding terms. The first step will get you this: x = 2 Now that you know

    asked by jasmine20 on February 13, 2007
  100. physics repost

    The electricity received at an electric substation has a potential difference of 2.80 x 10^5 V. If the required output is 440 V, what should be the ratio of the turns of the step-down transformer? I know the transformer equation is: Is/Ip = Vp/Vs = Np/Ns

    asked by Anonymous on April 18, 2008

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