1. Algebra

    the foci of the ellipse given by the equation 100x2 + 25y2 = 2500?

    asked by Aaron on December 13, 2016
  2. Math

    How do I write an quadratic equation whose roots are -2 and 6 and whose leading coefficient is 2

    asked by Sabrina on September 23, 2018
  3. algebra

    find the equation of the perpendicular line to y=1/2x+4 and passing through the point (1,-2) PLEASE HELP :)

    asked by john on June 12, 2011
  4. chemistry

    pls balance the equation AL3C4+H2O-CH4+AL(OH)3

    asked by seun on October 30, 2015
  5. Chemistry

    What is the molecular ratio in the following equation:H2O + SO3 = H2SO4

    asked by Beth on November 11, 2010
  6. Algebra

    Determine whether the graphs of the given equation are parallel, perpendicular, or neither. Explain y=4x-2 -X+4y=0

    asked by Mom on November 2, 2015
  7. Chemistry

    Complete and balance the following equation: NO2{-} + Cr2O7{2-} = Cr{3+} + NO3{-}

    asked by Steven on April 16, 2012
  8. math

    help pleaSE factorable quadratic equation and solve for the roots: 2x^2 + 13x + 20=0

    asked by WINSTON on March 9, 2014
  9. math

    what is the equation in point-slope form for the line parallel to y=-2x+10 that contains j(6,8)?

    asked by Anonymous on March 9, 2014
  10. Chemistry

    In de Broglie's equation w=wavelength w=h/mv how do i rearrange to solve for mass

    asked by Megan on March 8, 2015
  11. Analytic Geometry

    What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0 .

    asked by John on May 5, 2013
  12. Algebra

    What is an equation in point slope form for the line perpendicular to y=7x+3 and contains (-6,-3) ? A)y+6=-1/7 (x+3) B)y+3=7 (x+6) C)y+3=-1/7 (x+6) D)y+3=7 (y+6)

    asked by Savannah on September 22, 2016
  13. EASY GRAPHING QUESTION

    Write the equation of a circle with a center at (15, –35) and a diameter of 100.

    asked by Vince on June 7, 2011
  14. maths --plse help me..

    solve the following equation by method of completing the perfect square:- 4x^2 + 4 √3 x +3=0

    asked by Anonymous on December 13, 2012
  15. Differenctial equations

    Use the change of variable x = exp(s) to recast the differential equation xy′′+y′+(L/x)y=0 Please HELP ME

    asked by lili on October 14, 2011
  16. math!HELP!!

    write a quadratic equation in the variable x having the given numbers as solutions. Use ax^2 + bx + c=0 Thanks so much for the help

    asked by barb on November 12, 2010
  17. calculus

    solve the differential equation that satisfies the given condition: dy/dx=(ycos(x))/(6+y^2), y(0)=1

    asked by Lauren on October 17, 2015
  18. business math

    Translate the following statement into an equation: A number (X) decreased by 4 is 25. (Points : 2)

    asked by TM on April 30, 2013
  19. Calculusmath

    what is an equation of the conic section x^2+y^2=16 after a rotation of 45 degrees about the origin. A. (x')^2+(y')^2=16 B. (x')^2- (y')^2=16 C. (x')^2- 2x'y'+(y')^2=16 D. (x')^2+ 2x'y'+(y')^2=16

    asked by bob on March 12, 2014
  20. math

    For questions 1 and 2 solve the equation for the variadable f - 354 = 1,221 help

    asked by Skyler on October 9, 2018
  21. mathematics

    What is an equation of ellipse centre at c(-1,2),focus at f(-1,5)& passes through point p(5,6).

    asked by salim on December 24, 2016
  22. Algebra

    Determine the number and type of solutions for the quadratic equation: 4X^2 + 3X= -8

    asked by Kim on October 9, 2018
  23. precalculus

    find two sets of parametric equations for the given rectangular equation x+y^2=4

    asked by Anonymous on December 12, 2016
  24. Mat/117 Concept

    • If you are looking at a graph of a quadratic equation, how do you determine where the solutions are? Please provide and example.

    asked by Rose on March 4, 2012
  25. 8th grade math

    please help! x y 1 135 2 220 3 305 what is the expression/equation that could be used to find y?

    asked by ella on November 12, 2015
  26. Algebra

    Write linear equation in form y=mx+b given this condition parallel to y=-1/2x +1, through (4,2)?

    asked by Sherry on May 17, 2013
  27. Physics

    Can anyone write a mathematical equation to represent Charles law?

    asked by Schylar on May 31, 2013
  28. Calculus 1

    Find an equation of the tangent line to the curve at the given point. y =(1+2x)^12, (0,1)

    asked by TayB on March 4, 2015
  29. advanced math

    Math the equation a single logarithm. Express as factors. ln(x/(x-1))+ln((x+1)/(x))-ln(x^2-1)

    asked by kristina on December 3, 2012
  30. chemistry

    what is the balanced equation of NaHCO3+CH3OOH---->H2CO3+NaCH3COO

    asked by michelle on May 28, 2011
  31. physical science

    Balance this chemical equation. ___ K(s) + ___H2O(1) >>>>> KOH(aq) + H2(g)

    asked by BDM on January 5, 2011
  32. Math

    Create a word problem system of equation that has an answer x=1.25 and y= 2.75.

    asked by Cole on June 6, 2018
  33. Algebra

    solve the following literal equation for r v=pi r^2h I got r=+/- sq root v/pi•h am i done or do i need to eliminate signs?

    asked by Shirley on August 8, 2018
  34. Algebra

    What is the vertex form of the equation? y=x^2-6x+8 I have the answer I just need to make sure I have the steps.

    asked by Rach on October 20, 2015
  35. Calculus (derivatives)

    find an equation of the tangent line to the curve at the indicated point. y = -(x^1/3); (8, -2)

    asked by Nemo on October 13, 2011
  36. science

    vertical distance equation for a freely falling object

    asked by Anonymous on May 11, 2013
  37. Geometry

    What is an equation in point-slope form for the line perpendicular to y=2x+13 that contains (8,-4)?

    asked by Sierra on March 9, 2014
  38. Math

    What is an equation for the function that gives the values in the table? xl 2 l 3 l 4 l yl10l13l16l In other words, x-2, y-10, x-3 y-13, x-4 y-16

    asked by Bernice on May 28, 2011
  39. maths

    PT bisects QR perpendicularly.P is a point on the y-axis.if Q(1;8) and R(6;1). Find the equation of PT

    asked by oarabile mpane on April 19, 2012
  40. Implicit Differentiation (Please HELP)

    Write the equation of the line tangent to the curve x^2 − 4y^2 + 192 = 0 at (8, 8) Thank You

    asked by Tom on March 24, 2015
  41. Math

    What is an equation for the function that gives the values in the table? xl 2 l 3 l 4 l yl10l13l16l In other words, x-2, y-10, x-3 y-13, x-4 y-16

    asked by Bernice on May 28, 2011
  42. math

    what is an equation for the line that passes through the coordinates (2,0) and (0,3)? (1) y=-3/2x+3 (2) y=-3/2x-3 (3) y=-2/3x+2 (4) y=-2/3x-2 explain the steps too please. :)

    asked by lil on June 3, 2010
  43. Math

    Solve this multiple-angle equation. cos x/2 = -(sqrt3)/2

    asked by Anonymous on October 18, 2015
  44. Math

    What is an equation for the function that gives the values in the table? xl 2 l 3 l 4 l yl10l13l16l In other words, x-2, y-10, x-3 y-13, x-4 y-16

    asked by Bernice on May 28, 2011
  45. chemistry

    classify each reaction and balance the equation Al(OH)3--> Al2O3 + H2O

    asked by taylor on March 30, 2010
  46. Analytic Geometry

    What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

    asked by xavier on January 31, 2013
  47. MATH

    WRITE A WORD PROBLEM FOR THE EQUATION 12N-45=504.

    asked by L on May 16, 2015
  48. Algebra 1b

    Determine the equation of g(x) that results from translating the function from f(x)=(x+2)^2 to the right 6 units

    asked by Lisa on May 4, 2014
  49. Math

    Solve the equation. Round to the nearest tenth if necessary. x2 = 169

    asked by Derwin on March 22, 2012
  50. calculus

    Solve the equation 2cos(x)+1=0,0≤x≤2π0≤x≤2π. Show all of your work.

    asked by rosie on March 13, 2019
  51. math

    . Find the roots of the polynomial equation. x2 + x undefined 72 = 0 (Points : 1) 9 and 8 6 and 6 2 and 16 9 and 8

    asked by vilmaa on March 18, 2013
  52. algebra

    What is the value of n in the equation 12n + 8 = 11? Please submit your answer as a reduced fraction.

    asked by eric on March 21, 2012
  53. Analytic Geometry

    Find the equation of the circle touching the lines x+2y=4, x+2y=2 and y=2x-5 Please I need help, its for my homework

    asked by Lea on January 31, 2013
  54. algebra 1

    can some one please help me with this equation using the addition principle -9/5 + x = -2/9 Please explain how you got your answer in all phases. Thanks

    asked by robbie on December 8, 2010
  55. algebra

    Write an equation of the line, in the form of y = mx + b that passes through the given points. 3. (0,5),(-2,0) 5. (1,4),(3,8)

    asked by Anonymous on April 6, 2010
  56. Chemistry

    Have I balanced this equation correctly CN + NaOCL---OCN + NaCl

    asked by Mel on April 6, 2010
  57. Math

    can you write the equation that represents the relationship between quantity and price given: X 0=0, 1=6, 2=12, 3=18, 4=24 Y 0=0 1=5 2=10 3=15 4=20

    asked by aManZ on March 7, 2019
  58. Analytic Geometry

    What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

    asked by xavier on January 31, 2013
  59. Maths

    What is the equation, in the form y= x^2 + bx + c of the parabola which passes through the points (-3,0) and (1,-16)? y=a(x-s)(x-q) y=a(x-(-3))(x-1) y=a(x+3)(x-1) y=a(x^2+2x-3) I'm confused...

    asked by Debora on October 16, 2016
  60. college algebra

    The goal of this problem is to solve the equation by completing the square. x^2-9x+14=0

    asked by john on September 13, 2011
  61. MATH

    Find the area of the part of the plane with vector equation r(u, v) = that is given by 0 ≤ u ≤ 1, 0 ≤ v ≤ 1.

    asked by Taylor on November 16, 2016
  62. beginning algebra

    find 3 ordered pairs the satisfy the equation 2x + 10y = 25

    asked by margie on October 19, 2016
  63. chemistry

    equation of the reaction of hydrochloric acid and iron sulphide

    asked by melody on November 29, 2010
  64. algebra 2

    Write a quadratic equation with roots 2 - 3i and 2 + 3i. I just need confirmation I did it correctly. I got y = x^2-4x+13

    asked by Allie on November 17, 2016
  65. Geometry

    Point M is the midpoint of the line equation ABMC. Which of the following is not true? (1)AM = MC (2) AB < MC (3) AM > BC or (4) BM < MC

    asked by Linda on March 12, 2013
  66. algebra 2

    to solve the system of equations which expression could be substituted for x into the first equation? first: 2x+7y=10 second: x-2y=15

    asked by Anonymous on February 2, 2013
  67. math for college readiness

    Suppose y varies directly with x. Write an equation relating x and y. y = −30 when x = 6

    asked by jessica on May 17, 2015
  68. Linear equation

    When mona was born her father was 25years old What will be the linear equation

    asked by Anonymous on October 17, 2016
  69. calculus

    Given ƒ(x) = 2x^2 - 3x - 1 find the slope and equation of the tangent line to ƒ at the point (1, -2)

    asked by Matt on March 13, 2013
  70. Trig

    What are the focus and directrix of the parabola represented by the equation:8(y-6)=(x+2)squared?

    asked by Emily on November 21, 2016
  71. East

    I need an equation that has something to do with the role of static friction in the design of tires

    asked by Jess on January 31, 2013
  72. arithmetic

    If you have the terms 64, 49, 36, 25, 16, 9, 5, and 1 what equation will work to find the nth term?

    asked by Anonymous on September 19, 2011
  73. Linear algebra

    find an equation of a plane containing a point (0,6,-2) and parallel to vector v1= (0,-3,0), v2=(0,9,-1) Help!

    asked by J Velji on November 25, 2010
  74. Precalc

    Find the smallest positive answer to the equation: sin(2x)=1

    asked by Lori on April 7, 2010
  75. maths

    find the equation of plane passing through point(0,7,-7) and containing line x+1/-3=y-3/2=z+2/1

    asked by Anonymous on January 29, 2013
  76. Algebra

    Solve the exponential equation. 4^2x – 2 = 26 I know I use the one to one property to equate. But I am confused. Thanks!

    asked by Meghan on July 29, 2011
  77. Calculus

    Find the equation of the tangent line to f(x)=sec x - 2 cos x at (pi/3, 1).

    asked by Anonymous on August 30, 2015
  78. chemistry

    complete the equation for the reaction of the soap with magnesium chloride

    asked by Dela on October 9, 2016
  79. math

    Add two operational signs to make the equation true. 2 4 6 1 3=88

    asked by Anonymous on January 28, 2013
  80. CHEMISTRY

    write the balanced ionic equation of K2CO3+HCl

    asked by GODBLESS on January 28, 2013
  81. Math

    Describe in your own words how to solve a linear equation or inequality

    asked by Raul on July 27, 2011
  82. Algebra

    Write the word phrase as an algebraic equation The ratio of 16 to x

    asked by Monica on August 31, 2015
  83. MATH/OPTICS

    given di=145, do=38,hi=-97 formula: hi/ho=-di/do how do i rearrange this?? i do not want the answer. need help rearranging equation please help!!

    asked by lily on April 12, 2010
  84. Algebra

    find the intercepts and graph the equation by plotting points. Y=2-2x^2

    asked by Amanda on September 24, 2011
  85. Analytic Geometry

    Find the equation of a circle passing through (-1,6) and tangent to the lines x-2y+8=0 and 2x+y+6=0. Please I really need your help. I just do not know what to do.

    asked by Lea on January 28, 2013
  86. math

    REmove one toothpick to make a true equation I-III=II

    asked by jbcbjbi on December 11, 2010
  87. Calculus

    Find the equation of a circle with center C(1,6) and tangent line x-y-1=0.

    asked by Cad on July 29, 2011
  88. Math

    How do you find the quadratic equation, in standard form, that has the roots x= (2±√5)/3

    asked by Lily on May 5, 2015
  89. Calculus

    Let f(x)= 6x+(4/x^2). Then the equation of the tangent line to the graph f(x) at the point (2,13) is give by y=mx+b What is m? What is b?

    asked by Anonymous on January 30, 2013
  90. MAT/117

    The weight of an object varies on different planets. Solve the equation w=Cr^-2 for r

    asked by Anonymous on September 20, 2011
  91. algebra2

    write the slope-intercept form of the equation of each line x-y=-7

    asked by Gwen on August 20, 2015
  92. algebra

    solve each exponential equation. Given the value for x 8^x=1/64 3^x=6 Can someone show me how to preform these. I would greatly appreciate it Thank You

    asked by Mary on May 7, 2014
  93. algebra homework help

    The sum of two consecutive integers is 285 How would I solve an equation like this

    asked by jennifer on October 11, 2016
  94. math

    four times a number increased by 5 is 37 translate this into algebraic equation

    asked by kent yrell on November 24, 2016
  95. math

    how do I figure out how to write an equation (and solve the problem) for algorithm?

    asked by preston on September 21, 2011
  96. mathematics

    Find the equation of the parabola with the vertex at the origin and directrix y =5

    asked by victor on August 3, 2011
  97. Algebra

    When will the dependent variable in the equation Y=[(sqrt)(x+4-3)] equal or exceed 4? • x ≥ –0.17 • x ≥ 45 • x ≥ 48 • x ≥ 53

    asked by Sandra on May 9, 2014
  98. calculus

    Find an equation(s) of the circle(s) described. Tangent to x + y = 0 and x - y - 6 = 0; center on 3x - y + 3 = 0. How do you solve this?

    asked by hfdsgds on March 18, 2012
  99. pre calculus

    given points (0,0) (0,5) vertical asymptote of (-1,1) and horiz (2,1) how do I find the equation??????

    asked by M on September 22, 2011
  100. Maths

    From the differential equation of the family of straight lines having y-intercept 3

    asked by Shahana on February 25, 2019

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