1. Math Help

    I noticed you guys didn’t help the other person out with this question and I need help as well. What is the solution of the system of equations? {-3x - 4y - 3z = -7 {2x - 6y + 2z = 3 {5x - 2y + 5z = 9 A. (5,-2,7) B. (-5,2,7) C.(5,2,-7) D. No solution Use

    asked by Issa on September 27, 2018
  2. science EASY but help plz

    Solve: A jar contains 45mL of corn syrup whose mass is 41.4g and 90mL of glycerin whose mass is 75.4g. Which liquid is on top? SHOW MY WORK? im not sure how to do that what math would i show?

    asked by lindsay on December 12, 2008
  3. PSYCHOLOGY answer included

    provide a situation when scientific method, case study method, survey method, Naturalistic observation method, Correlation method, and Experimental method could be applied would collecting DNA be for scientific mthod?

    asked by scooby on November 20, 2009
  4. Algebra1!!!

    1.Six pears and three apples cost $3.90. Two pears and five apples cost $3.30. How much does one pear cost? Hint: You have two unknowns (variables), so you need two equations. Write one equation for each situation and solve the system of equations. 6P +

    asked by SANDRO! on November 6, 2006
  5. Math

    A company purchased an air conditioning system for $10200. The shipping charges on the system were $875, and the setup cost were $1250. The system is expected to last for five years and has a residual value of $2000. If you use the straight-line method to

    asked by Anonymous on April 19, 2010
  6. Calculus - Integrals

    I made this question, just wanted to make sure it didn't drown under the tide... I've set a problem up, something like this. s^4: A+D=0 s^3: -2A+B-3D+E=0 s^2: 2A-B+C+3D-3E=0 s^1: -2A+B-D+3E=4 s^0: A+C-E=4 Count Iblis -It's easier to substitute for s the

    asked by David on March 25, 2008
  7. algebra

    Solve by substitution method 3x+8y=17 2x+y=14 please show step by step so i can understand better. I keep getting it wrong at the end.

    asked by tara lee on August 1, 2011
  8. Math

    For questions 8-10, remember to show all the steps that you use to solve the problem. Be sure to use the text box where the question mark first appears to show your mathematical work. You can use the comments field to explain your work. Your teacher will

    asked by Connectionshelp on May 1, 2019
  9. chemistry

    Mno4- + So3-2 = Mno2 + sO4-2 (in neutral solution,but H+ ions will appear in the final question) solve this redox reaction and give me the method also Thank you

    asked by taylor on January 10, 2016
  10. algebra

    Money is invested at two rates of interest. One rate is 8% and the other is 2%. If there is $1000 more invested at 8% than at 2%. Find the amount invested at each rate if the annual interest from both investments is $310. Let x amount invested at 8% and y

    asked by jerson on April 6, 2010
  11. math

    Money is invested at two rates of interest. One rate is 8% and the other is 2%. If there is $1000 more invested at 8% than at 2%. Find the amount invested at each rate if the annual interest from both investments is $310. Let x amount invested at 8% and y

    asked by jerson on April 6, 2010
  12. math-

    A new model of car is available in 4 exterior colors and 3 interior colors. Use a tree diagram and specific colors to show how many color schemes are possible for the car. Solve the problem using an alternative method as well.Note that you are asked to

    asked by Mike on August 10, 2009
  13. algebra

    Consider the following system of inequalities: {(c−1)x^2+2cx+c+4≤0 cx^2+2(c+1)x+(c+1)≥0 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime positive integers. What is the value

    asked by Pool on May 2, 2013
  14. algebra

    Consider the following system of inequalities: {(c-1)x^2+2cx+c+40 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime positive integers. What is the value of a+b? Details and

    asked by hmmm on April 29, 2013
  15. maths

    Consider the following system of inequalities: {(c−1)x^2+2cx+c+4≤0 cx^2+2(c+1)x+(c+1)≥0 The sum of all real values of c, such that the system has a unique solution, can be written as ab, where a and b are coprime positive integers. What is the value

    asked by sara on May 3, 2013
  16. MAths

    Consider the following system of inequalities: (c−1)x^2+2cx+c+4≤0 ---- (1) cx^2+2(c+1)x+(c+1)≥0 ---- (2) The sum of all real values of c, such that the system has a unique solution, can be written as a/b, where a and b are coprime positive integers.

    asked by ianian on April 29, 2013
  17. 6th grade

    I need to balance the equation and show my work. Ex. N - 2.4 = 5 +2.4 = +2.4 ----------- N = 7.4 How would I show my work for: 2.3 + 4.09 = N I know the answer is 6.39 because I add 2.3 and 4.09 but how do I show the work? Thanks

    asked by Michele on May 10, 2009
  18. Calculus - Volume By Integration

    Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the y-axis: y=(x-2)^3-2, x=0, y=25 Solve by either the disk or washer method. I calculated the volume using the shell method and got 1250pi. However,

    asked by Nicole on November 25, 2013
  19. Math

    24. solve the system of equations algerbraically. show all of your steps. (2 points) y=x^(2)+2x y=3x+20 I'm just having trouble understanding. Please help

    asked by on April 12, 2017
  20. Math - check my answers :)

    1. Find the amplitude, if it exists, and the period of y=tan 1/4È Answer: No limits in amplitude, y=tanÈ/4 period is 4pi 2.Solve x = Arctan(-sqrt3) Work: Pythagorean theorem: sqrt(1^2+3)= sqrt4=2 in length. Triangle is 1, sqrt 3,2 Answer: -60° 3. In

    asked by Grace on January 30, 2009
  21. maths-algebra

    solve these similtanious equations using an algebraic method 4x+3y=21 2x+y=8 you must show your working multiply the second equation by two.. 4x + 2y=16 Now subtract that equation from the first.

    asked by paris on April 3, 2007
  22. Chemistry

    Given an aqueous solution of NaCl, which of the following is the simplest method for the separation of NaCl from the solution? 1. evaporation of solution to dryness 2. filtration of solution 3. osmosis of solution 4.centrifuging the solution 5.

    asked by Anonymous on January 30, 2010
  23. math

    (8/3-1) is a solution to 8x-7y=10 . Please show all of your work

    asked by christine on August 14, 2011
  24. Chem

    A patient receives 3.2 L of glucose solution intravenously (IV). If 100. mL of the solution contains 5.0 g of glucose (carbohydrate), how many kilocalories did the patient obtain from the glucose solution? *If anyone could help me with this, please show

    asked by Lori on September 3, 2018
  25. Math need by 9pm cst

    Solve by substitution method. Show step by step process. 4x+5y=27 x=26-4y

    asked by SAP on September 30, 2010
  26. math

    The equation: T= 2* pi* sqrt(2/3L/9.8) Solve for L. Please show the solution step by step. The square root is giving me trouble in my solution. Thanks for your help.

    asked by alice on January 1, 2014
  27. Math "Need Help Asap"!

    19. WorkPad Note: In questions 19-21, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your

    asked by Markest Lee on December 17, 2015
  28. Chemistry

    You have 1683.8 g of a bleach solution. The percent by mass of the solute sodium hypochlorite, NaOCl, is 3.62%. How many grams of NaOCl are in the solution? (show work Please)

    asked by Brianna on February 19, 2017
  29. Math (Need help Urgent)

    1. Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 . If the path of the

    asked by Mary on June 18, 2015
  30. Math

    Estimate each quotient. Tell which method you used. Do I respond with by telling I used the method of rounding to solve? Ex. 195 divided by 4. Answer 200 divided 4 = 50. Method I used is rounding/estimating.

    asked by Micaya on August 23, 2012
  31. Pre-algebra

    I don't understand this. Can you do some examples? One student had the following way of dividing fractions. First the student renamed the two fractions with a common denominator. Then the student ignored the denominators and just divided the numerators to

    asked by Alex on April 15, 2008
  32. Math ,help

    how can i simplify this more its for the following problem: Problem #22 solve by using the quadratic formual. 5x^2-4x+1=0 this is where i am but i do not know how to go further. x = (4 (+/-) sqrt (-4))/(10) Problem #23 Solve by completing the square.

    asked by jasmine20 on April 15, 2007
  33. Math

    Find the LCM for the given numbers by an appropriate method. 24, 54, and 27 Show your method.

    asked by Anonymous on October 4, 2009
  34. chemistry

    What is the molarity of a salt solution in which 117.0 grams of salt (NaCl) is dissolved in water to give 5.00 L of solution? Show all work including units.

    asked by len on August 23, 2011
  35. Math

    2y/3+27+3y/4=-24 Please help me solve and show your work please and thank you

    asked by Melvin on February 15, 2012
  36. Math

    Y/3+11=y/2-3 Please help me solve this and show your work thanks

    asked by Makayla on February 16, 2012
  37. trig

    x^2-3y^2=13 x-2y=1 solve for x and y show all your work

    asked by Dianne on May 28, 2008
  38. Math

    2m+6=2m-1 Please help me solve this and show your work thanks.

    asked by Haylie on February 18, 2012
  39. Math

    2x-9/3=8-3x Please help me solve this and show your work thanks

    asked by Olivia on February 16, 2012
  40. Math

    1/2(6x-4)=4x-9 Please help me solve this and show your work please and thank you

    asked by Haylie on February 16, 2012
  41. Math

    14-w/8=3w/4-21 Please help me solve this and show work

    asked by Melea on February 16, 2012
  42. Math

    3k/4-28-2k/3=37 Please help me solve and show your work please and thank you

    asked by Sadey on February 15, 2012
  43. Math

    w/4-w/5-1/3=16/15 Please help me solve this and show your work. Thanks

    asked by Haylie on March 7, 2012
  44. ALGEBRA

    SOLVE AND SHOW WORK -6(5-2z)+5z-8z-3(16-3z)

    asked by Lisa on July 15, 2012
  45. Algebra

    Please solve: Show work 6x^2 = 36

    asked by Jasmin on June 23, 2009
  46. Mathe

    4m/9+13-1m/3=4 Please help me solve and show your work

    asked by Sadey on February 15, 2012
  47. algebra

    solve show all work 8(6-5x)=-24(x-2)

    asked by babygirl on September 6, 2011
  48. Pre- Algebra

    Solve -3(2w-1) = 5w - 19. Please show all of your work.

    asked by Kameesha on November 7, 2011
  49. Math

    r/3+7-r/5=-3 Please help me solve this and show your work

    asked by Haylie on February 19, 2012
  50. Math

    k/5+3/20

    asked by Amanda on February 22, 2012
  51. math

    Solve -6(5-2z)+5z=8z-3(16-3z) . Please show all of your work.

    asked by Anonymous on March 26, 2011
  52. Algebra1

    I have to solve for "x": bx/c=2-cx/b please show your work! Thank you!

    asked by NEED HELP NOW!! on February 22, 2013
  53. Algebra

    Solve for x and y: 2x + y = 1 x - y = 8 PLEASE HELP. and show work.(:

    asked by emily on September 2, 2008
  54. Algebra

    Solve.Show work. -9y-12(2-3y)=-25-2(y+6)

    asked by sherry on March 17, 2012
  55. math

    Solve 4x- 3(5x-8)=23-9(x+2) . Please show all of your work

    asked by christine on August 15, 2011
  56. Math- urgent

    Solve for x. 8x-(8+6x)=20 Please show your work.

    asked by Sarah on December 10, 2013
  57. Math- urgent

    Solve for x. x+4 (x+3) =17 Please show your work.

    asked by Sarah on December 9, 2013
  58. math

    (12-8)(3x-5)(7x+29) = solve: show your work

    asked by keshia on July 18, 2011
  59. Math

    Solve for x. x/(x-2) + (2x)/[4-(x^2)] = 5/(x+2) Please show work!

    asked by April on July 12, 2013
  60. ALG 2!!!

    please solve and show work 5(2x - 7) = 33 - 3(6x + 4)

    asked by tyneisha on October 28, 2012
  61. Math

    1x+3y = 12 Solve for both, show work

    asked by Kaylee on September 28, 2018
  62. math

    12-8 3x-5 7x+29 solve show all your work

    asked by keshia on July 18, 2011
  63. math

    how do you solve (and show your work for): 5-2x=7

    asked by martha on April 15, 2010
  64. Math

    Could you show me how to work through this problem? Show me steps Solve for s. Show all steps. –3s ≥ 18

    asked by mstv on October 25, 2014
  65. algebra 1b

    Solve each system using substitution. check your solution. a = 2/3b -3 a = 2b - 18 c = 3d -27 4d + 10c = 120

    asked by dillon on January 24, 2008
  66. Gaussian Elimination Method

    Write the system of equations as an augmented matrix. Then solve for x and y. -3x-y=11 -9x-2y=34 Solution =

    asked by Devin on December 15, 2016
  67. Pre-Calculus/Trigonometry

    Solve the following system of equations algebraically. Verify your solution by using matrices. 3x-y=0 5x+2y=22

    asked by Anonymous on September 29, 2014
  68. math

    Solve the following system using substitution. Write the solution as an ordered pair, (a, b). b = a – 4 2a – 3b = -2

    asked by Jorge on April 30, 2012
  69. Algebra

    Can you please help? I am working System of Equations. I need to find the solution of each of the following systems: How do I solve...thank you Y = 5x -3 and Y = -3x +5

    asked by Jaraud on December 4, 2016
  70. algebra 2

    If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x + y = 2 3x + 2y = 9

    asked by mel on August 16, 2012
  71. Algebra 2

    If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x – 2y = 2 x + 3y = 17

    asked by Mike on April 25, 2011
  72. Algebra

    Which of the following ordered pairs represents the solution to the system given below? 2x + y = 20 4x − 2y = 40 A. (10, 0)***** B. (0, 10) C.(4, 2) D. (10, −10) Check my work please!

    asked by Bobby Newberry on May 8, 2017
  73. Math

    19. WorkPad Note: In questions 19-21, remember to show all of the steps that you use to solve the problem. Be sure to use the text box where the question mark (?) first appears to show your mathematical work. You can use the comments field to explain your

    asked by YRN DJ on December 17, 2015
  74. algebra

    for the system of inequalities y >= 2x - 1 and y = 2x - 1, but not y

    asked by tim on May 3, 2010
  75. algebra

    for the system of inequalities y >= 2x - 1 and y = 2x - 1, but not y

    asked by tim on May 3, 2010
  76. solving for x math

    2e^(4x^2)=3 how do i solve for x. do i use the ln methode because i don't know how to do that. by calculator, i got x=.168 but i don't know how to show my work. please help me solve for x. Take natural logs of both sides. ln 2 + 4 x^2 = ln 3 4 x^2 = ln

    asked by david on December 5, 2006
  77. math

    solve the compound inequalities as demostrated being careful of how a negative x- term is handled in the solving process show all math work arriving at the solutions display a simple line qraph for each solution set as demostrated. -119 (your or Copmound

    asked by mace on March 5, 2013
  78. Linear algebra

    Consider for every real number a the linear system of equations: { x +( a + 1 )y + a^2 z = a^3 { ( 1 - a )x +( 1 - 2a )y = a^3 { x +( a + 1 )y + az = a^2 b)Find the values of a for which the system has no solution, infinitely many solutions, and a unique

    asked by Elissa on April 27, 2014
  79. algebra 2

    solve T=2r(pi)h+2(pi)r^(2) ;solve 4 h show work...please help

    asked by cait on January 16, 2018
  80. algebra

    Solve the following rational inequality. Write the solution in interval notation. Show the number line and breaking points or graph of the polynomial with the part of the graph that is the solution (x-4)(x+2)/(x-3)(x+5) ¡Ü 0

    asked by james on March 29, 2014
  81. algebra

    Solve the following rational inequality. Write the solution in interval notation. Show the number line and breaking points or graph of the polynomial with the part of the graph that is the solution (x-4)(x+2)/(x-3)(x+5) ¡Ü0

    asked by james on March 28, 2014
  82. chemistry

    An aqueous solution of copper (II) sulfate is a thermodynamic system under study. What typer of system is this if the solution is contained in a beaker on a laboratory table?

    asked by Grace Peterson on October 26, 2013
  83. Chemistry

    Your Open Question Show me another » Chemistry help needed... Confused? The following reaction is first order and the rate constant is 2.35 x 10^-4 s^-1 at 20 degress C. 2 N2O5 -----> 2 N2O4 + O2 A.) What is the rate of reaction if the [N2O5]=.25 M? B.

    asked by Krissy on November 20, 2012
  84. algebra!

    If the measure of angle A is doubled and then decreased by 10 while the complement of angle A is decreased by one-third of itself, then these two anlges formed are still complementary. Find the supplement of angle A. Please explain so i could understand.

    asked by Kelly on August 31, 2006
  85. college algebra

    12x+4y+2z=-7 (1) 3x-12y+6z=-4 (2) 9x-16y+4z=-3 (3) solve the system. show steps and answers i tried this problem really difficult

    asked by ann :) on September 13, 2012
  86. Science

    Ricco mixed up 500 cc of salt solution. He weighed it and found it's mass to be 585 g. Will his shake up toy work the way he wants it to if he uses this salt solution? Why or why not? Remember, 1 ml= 1 cc show your math

    asked by Mia on March 25, 2014
  87. Chemistry

    Phenol (abbreviated HOPh) is a weak acid with a Ka= 1.29 X 10^-10. What is the pH of a mixture made by mixing 100.0 ml of a 0.700 M solution of phenol with 70.0 ml of a 1.00 M solution of NaOH? Help please and please show work... I'm so confused.

    asked by Chelsea on May 12, 2009
  88. Physics- drwls please check

    Good morning. This is a repost. The system is telling me my calculations is incorrect. I thought a fresh pair of eyes would help. Suppose a monatomic ideal gas is contained within a vertical cylinder that is fitted with a movable piston. The piston is

    asked by Mary on April 19, 2007
  89. substitution

    Please take me through this one problem and I think I can use this as a guide to tackle the others... Solve by the addition method, indicate if it is independent, inconsistent, or dependent x+3(y-1)=11 2(x-y)+8y=28 multiply out and get each into the form

    asked by Nik on August 16, 2007
  90. math

    3 3/4pt=____c show steps and work please Try the method DrWLS or I showed you FIRST. Repost if you still don't get it but tell us what you don't understand about the procedure.

    asked by brooke on November 30, 2006
  91. intermediate algebra

    Soe using the eliminatin method.Show work.State if it has infinite solutions or no solutions...-15r+12s=24,30r-24s=48

    asked by Lueshelle on April 24, 2012
  92. Chemistry

    I do not know how to solve this problem. Could you show me how? You have a stock solution of 5.00M H3PO4. a.) What would be the concentration if 20.0mL of the stock solution is diluted to 250.0mL? b.) What volume of the dilute solution would you need if

    asked by A on October 7, 2014
  93. physics

    hey i have a some questions i am trying to solve for practice, because i have a test coming up. can you guys help me with them? i will post them Yes. Please show your work, however. Physics is best learned through practice, not by watching others solve

    asked by gomez on August 7, 2007
  94. Math

    "Solving a system involving three unknowns." We're supposed to use substitution or elimination. 3d+e-2f=-14 2d-3e+4f=-23 5d+4e-10f=-13

    asked by Jam on May 17, 2011
  95. pre calculus

    Use Gaussian elimination to write the system of equations given below in row-echelon form. 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

    asked by Anonymous on November 30, 2016
  96. pre calculus

    Use Gaussian elimination to write the system of equations given below in row-echelon form 2x+4y+z=-4 2x-4y+6z=13 4x-2y+z=6

    asked by Anonymous on November 29, 2016
  97. Algebra 1

    What is the solution? use elimination . 4x-y=23 7x-y=21 a.(11,0) b.(4,-7) c.(11,44) d.(4,7)

    asked by Sierra Elizabeth on January 5, 2016
  98. Algebra 1

    What is the solution? use elimination . 4x-y=23 7x-y=21

    asked by Sierra Elizabeth on January 4, 2016
  99. math

    Determine if(3/8-1 is a solution to 8x-7y=10. Please show all of your work

    asked by christine on August 15, 2011
  100. Math 20-1

    What is the solution for 2x^2-7x>-3? (2 marks) (Show your work)

    asked by Alex on January 29, 2015

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