1. chemsitry

    home / study / questions and answers / science / chemistry / make sure to answer both parts: 1)balance the following ... Your question has been posted. We'll notify you when a Chegg Expert has answered. Post another question. . Question Edit question make

    asked by marcus on September 29, 2015
  2. chem!

    Calculate the heat of reaction for the incomplete combustion of 67.0g propane producing carbon monoxide gas and water vapour. how would I go about and do this question? What are you studying? Do you know how to use the thermodynamic tables (delta Ho, etc).

    asked by Chem on May 14, 2007
  3. math

    My problem I have involves a method that requires using the quadratic equations that comes from India. Here the problem that I have to solve : x to the second power plus 12x minus 64 equals 0 I need someone to walk me through each step to arrived to the

    asked by Dave on February 13, 2011
  4. Math

    Barbara is playing a game. She jumps forward 5 feet, and then steps backward 2 feet. How many jumps will it take her to reach the finish line, which is 20 feet from where she started? Make a table to show Barbara's position. Barbara will reach 20 feet on

    asked by Haley on March 1, 2011
  5. pre calc

    A ship is tied to two anchors on the shoreline. The anchor line on the left forms a 46 degree angle with the shoreline and is 350 feet long. The anchor line on the right forms a 63 degree angle with theshoreline and is 283 feet long. Find the exact

    asked by sydney on March 26, 2017
  6. stats

    A researcher hypothesizes that a new herbal supplement improves memory. A sample of n = 25 college students is obtained and each student takes the supplement daily for six weeks. At the end of the 6-week period, each student is given a standardized memory

    asked by Komal on October 23, 2012
  7. Spanish. PLEASE HELP.

    I have know idea what the answers are. Please help me. THANK YOU!! 1. Write the verb form for: yo/hacer. 2. Write the verb form for: ellos/hacer. 3. Write the verb form for: nosotros/hacer. Thank You.

    asked by Deborah on January 23, 2013
  8. Mathematics

    At Harlan County Damn in Nebraska, the U.S. Bureau reports that the storage content of the reservoir decreased from 117,811 acre-feet (38.4 billon gallons of water) on Septmber 6, 2006 to 115,579 acre-feet (37.7 billion gallons of water) on October 6,

    asked by Kevin on September 8, 2008
  9. math

    it cost a company 15,000 per day to operate a plant no matter how much product they produce. in addition, it cost 75 per unit produced. write an equation that represents the total cost to operate the plant each day. use the variable x to represent the

    asked by emely on February 28, 2017
  10. trig

    An object suspended from a spring is oscillating up and down. The distance from the high point to the low point is 30 cm, and the objects take 4 sec to complete 5 cycles.For the first few cycles the distance from the mean position, d(t), in cm with respect

    asked by Azal - pleaseee helpp on July 20, 2013
  11. Chem

    Calculate ΔG at 25°C for the precipitation of lead(II) chloride from mixing 100. mL of 0.025 M lead(II) nitrate solution with 100. mL of 0.15 M sodium chloride solution. The ΔG° for the reaction at 25°C = −27.36 kJ/mol. (Hint: write out reaction

    asked by Anonymous on February 23, 2014
  12. Chemistry 102

    For a question like “calculate the pH of an aq.solution that is 1.0 M CH3COOH and 1.0 M CH3COONa, how do you know to write the equation like this: CH3COOH + H2O => H3O+ + CH3COO- and not like H3O+ + CH3COO- => CH3COOH + H2O for the ICE chart. This would

    asked by Nick on May 3, 2010
  13. Math

    Sarah can type 225 words in five minutes. She then typed 135 words in three minutes. If sarah types for 24 minutes, how many words did she type? A. What is the answer? (I answered 1080) B. Explain what the constant of variation is in the problem. Write an

    asked by Max on November 15, 2015
  14. Math

    the amount of simple interest earned in a savings account varies directly with the amount of money in the savings account with the amount of money in the account. A certain bank offers a 2% savings rate write a direct variation equation for the amount of

    asked by M on October 15, 2014
  15. Physics

    The vector position of a 3.40 g particle moving in the xy plane varies in time according to the following equation. At the same time, the vector position of a 5.05 g particle varies according to the following equation. For each equation, t is in s and r is

    asked by carlton on December 2, 2012
  16. math

    Why can not a line segment have more than one midpoint Because the definition of a line segment is a segment with two endpoints. If there are only two endpoints then there can only be one middle, hence one midpoint.

    asked by usha on March 8, 2007
  17. Math

    Greg rode his bicycle at a constant speed of 20 miles per hour. Plot points on the graph to represents the distances Greg rode after 1, 2, 3, and 4 hours (1 hour= 20 miles, 2 hours= 40 miles, 3 hours= 60 miles, 4 hours= 80 hours) Then write an equation to

    asked by Lucifer Albernathy on April 25, 2016
  18. Math

    A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of

    asked by Anonymous on October 15, 2012
  19. Algebra

    A school planned to buy x calculators for a total cost of Ksh 16200. The supplier agreed to offer a discount of Ksh 60 per calculator. The school was the able to get three extra calculators for the same amount of money. (a) Write an expression in terms of

    asked by Anonymous on October 15, 2012
  20. Math

    In a downtown parking lot,there are 5 times as many cars as there are trucks. There are 12 trucks in the parking lot. Write an equation that shows the number of cars parked in the parking lot. How many cars are in the parking lot

    asked by Janarian on September 15, 2015
  21. Math

    Fluffy, Spot and Champ combined dog years is 91. Spot is 14 years older than Fluffy, Champ is6 years older than Fluffy. Write and equation and solve how old Fluffy is? Thanks

    asked by Dan on October 16, 2008
  22. physics

    A force vector F1 points due east and has a magnitude of 200 newtons. A second force F2 is added to F1. The resultant of the two vectors has a magnitude of 400 newtons and points along the east/west line. Find the magnitude and direction of F2. Note that

    asked by ajo on September 20, 2007
  23. math

    The curve C with equation y=fx passes through the point (3, 14/2) given that f'(x)=2x+3/xsquared a) find f(x) (5 marks) b) verify that f(-2)=5 (1 mark) c) find an equation for the tangent to C at the point (-2,5) giving your answer in the form ax+by+c=0

    asked by Nabiha on December 3, 2011
  24. Math

    a) Determine an equation, in simplified form, for the family of cubic functions with zeros 2 +- sqrt5 and 0. b) Determine an equation for the member of the family with graph passing through point (2,20)

    asked by Labz on June 4, 2012
  25. Math

    Emmy is 12. She writes an equation to find her mother's age, m. m - 12 + 35 What operation solves the equation for m? add 12 to both sides, or subtract 12 from both sides, or multiply both sides by 12, or divide both sides by 12

    asked by Jason on March 3, 2011
  26. Math

    I am supposed to use patterns or a linear equation to complete the table but I can not find a pattern of linear equation. For instance I tried Q=11(P)+0. but it works for only the first one and the last two. Plase help... P --2--- 88 ----- 8 ------ 10

    asked by Learner on November 28, 2009
  27. algebra

    Im lost i don't know how to do this can someone show me step by step how to solve this For what value of c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression

    asked by toni on October 8, 2013
  28. maths

    The curve C with equation y=fx passes through the point (3, 14/2) given that f'(x)=2x+3/xsquared a) find f(x) (5 marks) b) verify that f(-2)=5 (1 mark) c) find an equation for the tangent to C at the point (-2,5) giving your answer in the form ax+by+c=0

    asked by Nabiha on December 3, 2011
  29. 5th grade math

    How do you do letter equations? "Each letter in the equation below represents a different digit from the set (1, 3, 4, 7, 8). find the value of each letter to make the equation true. Each letter must represent only one number throughout the entire

    asked by Samantha on January 14, 2010
  30. Chemistry

    Need help to identify 10 facts about the reaction that can be read in this equation: 2AgNO3 (aq) + PbBr2 (s) --> 2AgBr (s) + Pb(NO3) 2 (aq) I had already balanced the equation original was AgNO3 (aq) + PbBr2 (s) --> AgBr (s)+ Pb(NO3) 2 (aq)

    asked by Stephanie on August 1, 2012
  31. Science

    What is the equation for calculating final temperature when equal masses of water are mixed? What is the equation for calculating how much heat energy calories transferred to or from a mass of water?

    asked by Austin on February 14, 2008
  32. Math

    Solve the equation 2cos2x = √3 for 0°≤x≤360° I did this: cos2x = √3 /2 2x=30 x=15 x=15, 165, 195, 345 Is this correct? Solve the equation √3 sin2x + cos2x = 0 for -π≤x≤π No idea how to approach this one Thanks a bunch for the help!

    asked by Autumn on October 19, 2017
  33. Chemistry

    I have the following equation: 0.5 ug/L x 1g/10^-6ug x 1 mol/27 g I can't divide by 10^-6...how do I rearrange the equation? What is the problem with dividing by 10^-6? Anyway, you can multiply by 10^6 instead. I end up with an error message when I divide

    asked by Steve on January 23, 2007
  34. algebra

    In February, you have a balance of $270 in your bank account. Each month you deposit $45. Let January = 1, February = 2, and so on. Which equation models this situation? Use the equation to find the balance in June.

    asked by marouf on November 12, 2011
  35. algebra

    Im lost i don't know how to do this can someone show me step by step how to solve this For what value does c does the equation have one real root? Hint using the values of a and b found in the equation, solve D = 0 for c. Consider the quadratic expression

    asked by toni on October 8, 2013
  36. Chemistry

    Please help! Complete equation by drawing structural formula(e) of the product(s). CH2=CH-CH-OH + CH3-CH-CH2-C =O CH3 CH3 -OH You will have to imagine the bonds as I can't draw vertical or diagonal lines! There are too many possibilities to imagine what

    asked by Bean on March 13, 2007
  37. Chemistry

    Calculate and compare the mass of the reactants with the mass of the products for each equation. a)2KClO3 (s) ==> 2KCl(s) + 3O2 (g) b)4NH3(g) + 6NO(g) ==> 5N2(g) + 6H2O(g) c)4K(s) + O2(g) ==> 2K2O(s) Show that each balanced equation obeys the law of

    asked by Ralph on April 5, 2010
  38. 6th grade math

    A sperm whale can stay under water 7 times as long as x minutes more than a platypus can. Write and equation that states the relationship of the minutes these two mammals can stay under water. Sperm Whale- 112 Platypus-10 My answer: 7x+10 x=112 Is my

    asked by jamar on January 8, 2015
  39. physics

    for a free throw in basketball,find an equation for the final angle to go into the hoop in terms of y and x to the hoop and the initial angle. I can't seem to get an equation with only those variables. I always get stuck with others like time and velocity.

    asked by Mischa on February 3, 2008
  40. Physics

    A satellite has an orbit with pedigree 175 km and apogee 181,200 km. What is the period of the orbit? >>I'm not sure what the associated equation is. I tried the problem using the average radius in the period equation but it didn't work. Please help!

    asked by Elle on May 9, 2009
  41. Math; Please help and thank you

    sin(x+(pi/4))- sin(x-(pi/4))=1 1. Apply the sum and difference formulas for sine to simplify the left-hand side of the equation. 2. find all the solutions you found to the equation you found.

    asked by Alisa on January 29, 2014
  42. Quantum Physics

    Suppose that ψ1 and ψ2 satisfy the time independent Schrödinger equation for some potential. Which of the following necessarily also satisfies the Schrödinger equation? Cψ1ψ∗2 aψ1+bψ2 Aψ1/ψ2 Cψ1ψ2 In accorda

    asked by sonia on October 21, 2013
  43. Chemistry

    X rays of wavelength 2.63 were used to analyze a crystal. The angle of first-order diffraction (n = 1 in the Bragg equation) was 16.14°. What is the spacing between crystal planes?(in pm) Do I just plug everything in the Bragg's equation? nλ=d*sinθ n=1

    asked by kay on November 23, 2010
  44. Chemistry

    If 0.200mol of nitrogen gas and 0.200mol of oxygen gas react, what is the limiting reactant? N2(g)+O2(g)→2NO(g) How many moles of NO are produced according to the equation? Please show how to perform this equation with the answer please.

    asked by Tonya on October 25, 2014
  45. Chem

    Enter the net ionic equation for the reaction of aqueous sodium chloride with aqueous silver nitrate. I know the equation is AgNO3(aq)+NaCl(aq)---->NaNO3(aq)+AgCl(s) Is Ag^+(aq)+ Cl^-(aq)--->AgCl(s) right?

    asked by Kaylee on October 6, 2010
  46. Math - True or False

    True or False: 1. f(x) = -x^3 + x + 1 is an odd function 2. f(x) = x^3 -ax^2 + bx represents a cubic equation having no constant term ...(I'm thinking true?) 3. If f(x) = x/x+2 then f^-1 (x) = 2x/1-x ...(my guess is false?) 4. The equation x^3 - 12x + 16 =

    asked by Jamie on September 12, 2010
  47. Psychological Statistics

    TRUE OR FALSE. The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the regression equation, we obtain R2 = 0.60. Adding the second variable increases the variability that is predicted by the regression equation for

    asked by Cindy on October 17, 2018
  48. Chemistry

    Can somebody pls help me with this? For the equation below find the net balanced equation: Ag + NO3- --> Ag+ + NO (Note: This reaction takes place in an acidic solution.) This is what I got: 3Ag + NO3- + 4H+ --> 3Ag+ + NO + 2H2O right

    asked by Lisa on February 5, 2007
  49. physics

    What is the linear speed of a point: a) on the equator, b) on the Arctic Circle (latitude 66.5 degrees N), c) at a latitude of 45.0 degrees N, due to the Earth's rotation? a relevant equation is v=rw, but I'm not sure how to apply it to the equation

    asked by Alessandra on April 11, 2010
  50. math

    For the pair of numbers (-1/5),(-1/2) My teacher wants us to find the quadratic equation with integral coefficients that has these numbers as solutions. I am not sure if I have the right equation for this. Could someone let me know if I am right or wrong

    asked by kim on September 3, 2010
  51. College Algebra

    Find all solutions of the equation. Check your solutions in the original equation. (Enter your answers from smallest to largest. Enter NONE in any unused answer blanks.) 16t^2/3 + 40t^1/3 + 25 = 0

    asked by Jack on July 13, 2013
  52. Chemistry

    If the percent yeild of the following equation is 55%, how many grams of H2SO4 are produced when 4.88 x 10^24 molecules of SO3 are combined with excess water? SO3(g)+H2O(l)->H2SO4(aq). what would be the formula to solve this equation

    asked by Sean on April 10, 2016
  53. math

    find all solution to the equation 3 cos(x+4)=1. in the interval of 0

    asked by alicia otto on March 26, 2016
  54. algebra

    x/9 +3 = 8 - x/3 Solve?????? First, get rid of the fractions to make the equation easier to solve for x. Let's multiply every term by 9: 9 [x/9 + 3 = 8 - x/3] x + 27 = 72 - 3x 4x = 45 x = 45/4 Substitute 45/4 for x in the original equation to check. It

    asked by deborah on February 5, 2007
  55. Math

    Write an algebraic equation for each of the following sentences. _____________ 12) One-third of a number is thirty-five. _____________ 14) Two times the sum of a number and five is twenty six. _____________ 16) The quotient of a number and two increased by

    asked by Barry Vacker on January 24, 2019
  56. Math

    Suppose you have a lemonade stand, and when you charge $1 per cup of lemonade you sell 50 cupes. But when you raise your price to $2 you only sell 25 cups. Write an equation for the nuber of cups you sell as a function of the price you charge. Denote "C"

    asked by Stephanie on January 19, 2009
  57. Physics HELP ASAP PLEASE

    A hawk is flying horizontally at 10 m/s in a straight line 200m above the ground. A mouse it was carrying is released from its grasp. The hawk continues on its path at the same speed for two seconds before attempting to retrieve its prey. To accomplis the

    asked by Shannon on February 11, 2011
  58. physics

    A person walks first at a constant speed of 4.50 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 3.00 m/s. (a) What is her average speed over the entire (b) What is her average velocity over

    asked by babidi on February 7, 2010
  59. Statistics

    At a certain concert, 43% of the audience was under 20 years old. A random sample of n = 181 members of the audience was selected. Find the value of sample mean, the mean of the distribution of sample proportions. Write only a number as your answer. Do not

    asked by Obi on October 18, 2015
  60. math

    Ted, a triathlete, can swim 1.2 miles in 25 minutes, bike 56 miles in 2 hours 25 minutes, and run 13.1 miles in 1 hour 35 minutes. He is training for an Olympic distance triathlon which is 0.9 mile swim, a 24.7 mile bike ride and a 6.2 mile run. If Ted

    asked by Emma on February 6, 2014
  61. math/science

    I understand now how to do the + and - graph but how would i label the 2 axis. One is for temps but how would i show the objects/subjects? If i was doing + only i would put numbers up the side and object/subjects on the bottom line but with + and - numbers

    asked by nula on January 11, 2007
  62. Chemistry

    1. Write the correct formulas for the following: A. A compound composed of melt X which has a +2 charge and nonment Y which has a -3 charge (write it as “XY” including the correct subscripts as necessary.) My answer: by adding or taking away a charge

    asked by Ummm on December 13, 2017
  63. algebra 2

    the 2 unequalities -26

    asked by hannah on October 31, 2013
  64. english

    Hi, i have to write a research paper on a topic related to may major, education (birth through five), can someone give me a good topic to write about? I'm new to this major so I don't have any ideas on what the the major topics are in this field, please

    asked by yfaridi1 on April 5, 2011
  65. German

    I have to write a 250 word essay in German. You are going to talk about a trip you took to all four German-speaking countries. (Don't forget Liechtenstein!) Can someone help me i don't know what to write? Plus my german isn't good enough.

    asked by Mara Selene on September 24, 2010
  66. Math 116

    How do you write an inequality for this problem. You have a budget of $2.500.00 and you want to buy 30 tons of rock for $60.00 per ton. You also want to plant trees for $84.00 per tree. Write an inequality that illustrates this problem and solve the

    asked by Janeen on October 28, 2009
  67. Webshop

    Hello there I am lacking an idea/ideas to write my entrepreneurship hand in report. It doesnt have to be a great idea but useable idea/s that can fits canvas model....if any of you have one, write it down and few reason why you think it is great. Thanks

    asked by entrepreneurship on March 3, 2016
  68. CHEMISTRY HELP!!!!!!!!

    How many grams of KCl are produced by the thermal decomposition of KClO3 that produces 25mL of O2 at 25 degrees and at 1 atm? A)0.0508 B)0.0762 C)0.0835 D)0.125 what is the anwser and what equation would i use to get the anwser? Write the balanced equation

    asked by smartypants on April 21, 2007
  69. Algebra

    Jesse Played two days of golf. On the second day, he got a score of six bellow par, or -6. His total score for the two days was o above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on the first day. Show your

    asked by Ella on November 8, 2017
  70. 9th grade

    the debate club needs $240.00 to attend a debate tournament. the club decides to sell iced tea and lemonade at baseball games. iced tea will be sold for $.50 per cup and lemonade will be sold for $.80 per cup. write the equation to find how many cups of

    asked by silvia on March 10, 2010
  71. math help please...

    1.Explain how to find the equation of the vertical asymptotes of a reciprocal function. 2.The reciprocal of a linear function and a quadratic function have the same horizontal asymptote. What is its equation? 3.Explain how to use end behaviour to find the

    asked by Kayal on January 6, 2014
  72. Calculus

    Show that u(x, t) = f(x−ct)+g(x+ct), where c is a constant and f and g have continuous second derivatives, is a solution of the wave equation in one dimension, ie (∂t)^2 u = c^2 ∂x^2 u. Note that this solution to the wave equation consists of two

    asked by Margo on September 30, 2015
  73. Chemistry

    How do I balance this equation. When 11.7 grmas of iron and 212.7 grams of chlorine gas completely react, iron (III)chloride, FeCl3 is formed. Balance the equation. Could someone please be kind enough to help me with this?

    asked by PP on July 10, 2008
  74. math

    Q: Convert 4x^2 + 4y^2 -8x -16y -29 = 0 into standard form. I first started by pairing the like terms together, getting: 4x^2 -8x + 4y^2 -16y = 29 The next step, I'm a little confused. I know I need to complete the square, but I'm not sure how to fully

    asked by Kenneth on January 29, 2012
  75. general science

    A Compound Containing 3 Atoms Of Carbon And 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The Two End Products Of This Equation Are Carbon Dioxide And Water. What Element Should You Look At First In Balancing This Equation?

    asked by jennifer on August 9, 2009
  76. Math Algebra

    Complete the square to turn the equation into the equation (x - p)^2 = q 2x^4 - 5x^2 - 12 = 0 a.) (x^2 - 1.25)^2 = 6 b.) (x^2 - 2.5)^2 = 6 c.) (x^2 - 2.5)^2 = 7.5625 d.) (x^2 - 1.25)^2 = 7.5625 I learned this topic but for some reason I still don't get

    asked by Bo Burney on July 7, 2018
  77. Chemistry

    Solid aluminum carbonate decomposes to form solid aluminum oxide and carbon dioxide gas. Is Al2(CO3)3 ==> Al2O3 + CO2 the right equation? If so, how do you balance this equation?

    asked by Jack on March 1, 2010
  78. pre-calculus

    solve the equation 1. In x + In (x+12) =2 x= ? or either there is no solution 2. solve the exponential equation 9^x=6 What is the exact answer? 3. Use transformations to indentify the graph of the function. Then determine its domain, range, and horizontal

    asked by ladybug on October 6, 2012
  79. Physics

    Determine the tension in the string at the top and bottom of its path when a 0.3 kg yo-yo is whirled in a vertical circle of radius 0.5 m at 2.5 m/s. I'm sure I can solve this, I just can't find the equation for tension. The only equation I could find in

    asked by Rudy on December 13, 2009
  80. Math

    The graph of a quadratic function has vertex(3,-4) and passes through the point (4,1). Find the equation of the function in standard form. Rewrite the equation in general form. Could someone explain to me how to do this, just don't understand.

    asked by -Untamed- on December 5, 2011
  81. Intermediate Algebra

    solve equation (x+1)(x-2)=54 Eric stated that the solution would be (x+1)=54==> x=53 or (x-2)=54==> x=56 However at least one of these solutions fails to work when substituted back in the orginial equation. Why is that? Please help Eric to understand

    asked by ladybug Please Help!! on June 18, 2012
  82. Chemistry

    An electrochemical cell is based on the following two half-reactions: Ox: Sn(s)--> Sn^2+(aq, 1.70 M)+ 2e Red: ClO2(g, 0.220 atm)+e --> ClO2^-(aq, 1.80 M) Compute the cell potential at 25 C. I think I'm supposed to use the Nernst Equation for this, but I do

    asked by Kyle on April 18, 2010
  83. math

    Shelby walks at a constant rate. the equation that represents this relationship is d=4t, where d is the distance in miles and t is the time in hours. What does the constant 4 tell you about shelby? Make use of structure. What question is answered by the

    asked by april on March 17, 2015
  84. Physics Electricity and Magnetism

    A microscopic droplet of ink in an ink-jet printer is deflected onto the paper by a force of 2.34×10-4 N. If the field causing the deflection is 6.62 kN/C, what is the charge on the droplet? What equation do I use to solve and What does each value mean in

    asked by Greg on August 29, 2014
  85. science

    FeS+HC1--->FeC1(2)+H(2)S. what is the balanced equation thanks. Wouldnt you need a coefficent of two in front of HCl? the balanced equation would result like this: FeS+2HCl-->FeCl2+H2S therefore, each side is equal Fe- 1 S- 1 H- 2 Cl-2

    asked by dillon on May 9, 2007
  86. Calculus

    Using inverse trigonometric functions, find a solution to the equation cos(x)=0.2 in the interval 0≤x≤4π. Then, use a graph to find all other solutions to this equation in this interval. Enter your answers as a comma separated list. Thank

    asked by Rileigh on April 4, 2017
  87. Algebra

    You join a racquetball club. Your membership entitles you to unlimited court time. The equation represents the monthly cost y (in dollars) for x hours of court time. Graph the equation.

    asked by Cassidy on October 29, 2015
  88. math

    The measures of two supplementary angles are in the ratio 5:1. What is the measure of the smaller triangle? A/B = 5 A + B = 180 Solve those 2 equations in two unknowns. B is the smaller angle. Hint: substitute 5B for A in the second equation. Then only B

    asked by Peggy on February 23, 2007
  89. Math

    The graph of a quadratic function has vertex(3,-4) and passes through the point (4,1). Find the equation of the function in standard form. Rewrite the equation in general form. Could someone explain to me how to do this, just don't understand.

    asked by -Untamed- on December 5, 2011
  90. calculus help me plz too hard show step

    charge Q coulombs at time t seconds is given by the differential equation RdQ/dt+Q/C=0, where c is the capacitance in farafd and R the resistance in ohms.solve the equation for Q given that Q=Qo where t=0 plz show step plz plz plz

    asked by ... on December 27, 2016
  91. English

    I have to write a 2 page essay on a court case in a movie. I have a few questions because I don't understand what my professor wants when she says this: -Evaluate the quality of information. Does that mean I have to write about whether the details in the

    asked by CommunityCollegeGirl on November 26, 2018
  92. Algebra

    I need help solving this equation. [SQRT(x + 3)] - [SQRT(x - 2)] =1 I know I am supposed to square each side however my teacher tells me I ahve to foil the lefthand side of the equation. Cna someone please help me with this. Thank you.

    asked by Junior on January 27, 2009
  93. QUADRATIC EQUATION

    r^2+8r=48 First bring the 48 to the other side of the equation r^2+8r-48=0 Now you can use the quadratic formula. x=-b+-sqrt(b^2-(4ac)) ¯¯¯¯¯¯¯2a¯¯¯¯¯¯¯¯¯ So... a=1 b=8 c=-48 Now just plug the numbers into the quadratic equation and get

    asked by JOHN on May 29, 2007
  94. math

    The equation below shows how Mandy decides how much juice to buy for a party. In the equation, g is the number of gallons of juice she buys, and t is the length of the party in hours. g= 3t + 5

    asked by Parker on March 25, 2015
  95. Chemistry

    If you add Na2CO3 and AgNO3 together in a test tube what exactly would you observe and what would be the equation for the equilibrium system? If you then add HNO3 to the solution what exactly would you observe and what would be the equation for that

    asked by Sylvia on June 20, 2009
  96. chemistry

    The value of the equilibrium constant (Kc) as represented by the first chemical equation is 2.70 x 10-3 at 1200 K. Calculate the value of the equilibrium constant (Kc) for the second equation at the same temperature. Express answer in scientific notation.

    asked by andy on April 13, 2010
  97. Chemistry

    I was able to get the balanced molecular equation but I am having a hard time getting the net ionic and oxidation half- reaction. Below is what I got for the balanced molecular equation: Al (s) + 3AgNO3 (aq) --> Al (NO3)3 (aq) + 3 Ag (s)

    asked by Erin on March 8, 2019
  98. Chemistry

    net ionic equation for the following molecular equation. HNO3 is strong electrolyte and CH3COOH is weak electrolyte. NaCH3COO(aq)+HNO3(aq)----->NaNO3(aq)+CHOOH(aq

    asked by Kay on March 1, 2014
  99. Algebra

    If the demand function for a commodity is given by the equation p2 + 16q = 1200 and the supply function is given by the equation 300 − p2 + 6q = 0, find the equilibrium quantity and equilibrium price.

    asked by Jamie on November 11, 2015
  100. algebra

    Find the value of x for the area of the triangle that is 12cm sq. The base is 2x+2 and the height is x. Solve this equation: (1/2)(base)(height) = (x+1)x = 12 x^2 + x -12 = 0 That equation is factorable. Take the positive root. (One of them will be

    asked by Laura on April 25, 2007

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