Posts by helper

Total # Posts: 1,918

  1. Algebra

    This isn't a question. This is a statement, telling you why a solution to a word problem should be checked to the original wording of the problem versus the equation written for the problem. This is because the equation, derived from the wording of the problem, could be ...
  2. algebra

    If x = -70 -x = 70 Think of '-' meaning -1 -1x = 70 Divide both sides by -1 -1x/-1 = 70/-1 x = -70
  3. Math

    You're welcome :)
  4. Math

    80% = 30 .80x = 30 x = 30/.80 x = 37.5 total games 20% of 37.5 = 7.5 games lost 30 wins 7.5 lost 37.5 total games Not sure what you are trying to do in Excel.
  5. Physics

    See links below under Related Questions. This almost exact problem was answered.
  6. Algebra

    the quotient of 12 and the number, x 12/x = quotient x = -3 12/-3 = ?
  7. Calculus

    A ball is shot straight up into the air with initial velocity of 47 ft/sec Free fall, s in ft, t in sec s = s0 + v0t - 16t^2 height, s0 = 0 velocity, v0 = 47 s = 0 + 47t - 16t^2 s = 47t - 16t^2 Instantaneous velocity, v v = ds/dt = v0 - 32t v = 47 ft/sec v = 47 - 32t To find ...
  8. Math

    360 deg = 1 revolution 1 min = 60 sec 120/360 = 1/3 rev/sec 1/3 per/s * 60 sec/min = ?
  9. College Algebra

    3x^2- 12x - 24 = 0 Solve the quadratic equation by completing the square: Divide both sides by 3: x^2 - 4x - 8 = 0 Add 8 to both sides: x^2 - 4x = 8 Add 4 to both sides: x^2 - 4x + 4 = 12 Factor the left hand side: (x - 2)^2 = 12 Take the square root of both sides: |x - 2| = 2...
  10. MATH

    Please don't type in all caps. It is rude. On the internet, all caps is equivalent to shouting. 21x^7 and 147x^9 LCM is 21x^7
  11. geometry

    You need to draw right triangle ABC. Angle A (vertex angle) = 3 deg side b (base) = 60 mi side c = hypotenuse side a (distance of climb) = unknown tan A = op/hyp = a/b = a/60 tan 3 = a/60 0.0524 = a/60 60(0.0524) = a 3.144 mi = a So the plane climbed 3.144 miles To find how ...
  12. Calc

    Looks good to me!
  13. calculus

    x^2/(x+1) dx | = integration symbol |x^2/(x + 1) dx Using long divsion |x - 1 + 1/(x + 1) dx |x dx - |1 dx + |1/(x + 1) dx 1/2 x^2 - x + ln |x + 1| + C
  14. geometry

    Please do not repost a question without first checking your original post. See your 1st post. This question was answered.
  15. Algebra

    You need parentheses. x - (4/-x) + 2 > 0 ? (x - 4)/(-x + 2) > 0 ? Please, re-state the problem with parentheses.
  16. math

    129/10 = ?
  17. Algebra

    You're welcome
  18. Algebra

    (7+u)(3u-1)=0 7 + u = 0 u = -7 3u - 1 = 0 3u = 1 u = 1/3
  19. geometry

    Sum of measures of interior angles of a polygon of n sides = (n - 2)* 180 deg (53 - 2)*180 = 51*180 = ?
  20. Algebra B

    imaginary number
  21. Algebra- is my answer right

    (2b^-4 c^6)^5 = 32c^(30)/(b^(20))
  22. Math

    x = gal of 30% solution .30x = value of 30% solution 150 - x = gal of 60% solution .60(150 - x) .50(150) = mixture .30x + .60(150 - x) = .50(150) Solve for x, gal of 30% solution 150 - x = gal of 60% solution
  23. Algebra- is my answer right

    (x^2+4x+4)+(y^2-2y+1)=20+16+4 Should be, (x^2 +4x + 4)+(y^2 - 2y +1 )= 20 + 4 + 1 (x^2 +4x + 4)+(y^2 - 2y +1 )= 25 (x + 2)^2 + (y - 1)^2 = 25
  24. algebra

    14 - 20x > 14 - 6x -14x > 0 When you divide by a negative, the sense of the inequality is reversed x < 0
  25. Math

    Your question is?
  26. Math

    Please put your subject in the School Subject box. w = width 4w + 1 = length P = 2w + 2L 62 = 2w + 2(4w + 1) Solve for w
  27. trig

    1 half x ? What does this mean?
  28. Finance

    $5,000 @ 5% for 5 yrs then 7% for 5 yrs I = PRT I = 5000(0.05)(5) I = 250(5) I = 1250.00 5000 + 1250.00 = 6250.00 I = PRT I = 6250(0.07)(5) I = 437.50(5) I = 2187.50 6250.00 + 2187.50 = 8437.50
  29. Finance

    Is the interest compounded? Compounded daily, quarterly, yearly, etc ?
  30. Finance

    What do the numbers 0,1,2,3,4,5 represent?
  31. Finance

    A(t) = P(1 + r/n)^nt P = 50,000 r = 0.076 n = 4 (quarterly) t = 4.5 A(4.5) = 50000(1 + 0.076/4)^(4(4.5)) A(4.5) = 50000(1 + 0.019)^(18) A(4.5) = 50000(1.019)^(18) A(4.5) = 50000(1.40325) A(4.5) = 70,162.50 50,000 + 70,162.50 = 120,162.50
  32. Finance

    A(t) = Pe^rt A(t) = 100,000(2.718281)^((0.056 * 3.5)) A(t) = 100,000(2.718281)^0.1960 A(t) = 100,000(1.216527) A(3.5) = 121,652.70 100,000 + 121,652.70 = 221,652.70
  33. accounting

    Is there a Stockholders equity acct? DB Cash CR Stockholders Equity
  34. Physics

    Incomplete problem
  35. math

    x = 1st odd integer x + 2 = 2nd odd integer x + 4 = 3rd odd integer x + 6 = 4th odd integer x + x + 2 + x + 4 + x + 6 = -104 4x + 12 = -104 4x = -116 x = -29 -29, -27, -25, -23
  36. math

    You are welcome :)
  37. math

    Set up a ratio 234 : 100 = 400 : x 234/100 = 400/x cross multiply 234x = 40,000 x = 170.94
  38. Complex Numbers

    You are welcome
  39. Complex Numbers

    x^2 - 6x + 25 = 0 Subtract 25 from both sides: x^2 - 6x = -25 Add 9 to both sides: x^2 - 6x + 9 = -16 Factor the left hand side: (x-3)^2 = -16 Take the square root of both sides: |x - 3| = 4i Eliminate the absolute value: x - 3 = -4i or x - 3 = 4i Add 3 to both sides: x = 3 - ...
  40. geometry

    Area of an equilateral triangle A = 1/4(s^2 * (sqrt(3))
  41. Geometry

    Is this the exact wording of your problem? Are you looking at a picture? An angle doesn't have 'sides'. Two lines or rays form an angle. Where are you getting three sides?
  42. math

    15 gal/tank x 25 mpg = 375 miles/tank 2500 mi / 375 per tank = 6.67 tank fills = 7 tank fills (Joe always fills tank) 15 gal per tank x 7 tank fills = 105 gal 105 gal x 2.99/gal = $313.95 gas expense
  43. math

    3 gal = 12 quarts Each scoop makes 3 quarts 12 quarts / 3 quarts per scoop = 4 scoops
  44. math

    V = pi r^2 h V = (3.14)(17^2)(3) V = ?
  45. math

    V = pi r^2 h V = (3.14)(6^2)(12) V = ?
  46. math

    You must have a typo. None of the choices are correct. starting at5:380p.m ?
  47. Math (Algebra 2)

    x^4 + 8x^2 - 20 (x^2 - 2)(x^2 + 10)
  48. ap calculus

    By Theorem ∫ e^x dx = e^x + C
  49. Geometry

    Perimeter = 36 36 - 18 longest side = 18 This would mean that the remaining TWO sides total 18. The length of any side of a triangle will always be less than the sum of the lengths of the other two sides and greater than the difference of the lengths of the other two sides. 18...
  50. algebra

    3.20x = value of blooming annuals 3.20 each plant * x number of plants = ttl cost 1.50y = value of non-blooming annuals 1.50 each plant * y number of plants = ttl cost 3.20x + 1.50y = 49.60
  51. algebra

    24 is the total number of plants. x = number of blooming annuals y = number of non-blooming annuals x + y = 24
  52. algebra

    "write a linear system of equations" This is a linear system of equations. You can use x and y instead of n and b. x = number of blooming annuals y = number of non-blooming annuals 3.20x = value of blooming 1.50y = value of non-blooming x + y = 24 3.20x + 1.50y = 49....
  53. algebra

    b = number of blooming annuals n = number of non-blooming annuals 3.20b = value of blooming 1.50n = value of non-blooming b + n = 24 3.20b + 1.50n = 49.60 Solve the system
  54. algebra

    Multiply by -5 (-3x - 4y = 21) Multiply by 4 (8x - 5y = -9) 15x + 20y = -105 32x - 20y = -36 47x + 0 = -141 47x = -141 x = -3 8x - 5y = -9 x = -3 8(-3) - 5y = -9 -24 - 5y = -9 -5y = 15 y = -3
  55. Calculus

    I just looked at the graph. You want the area from x = 0 to x = 1. | = integrate symbol | x^9(1 - x) | x^9 - x^10 Then plug in x, from 0 to 1.
  56. Calculus

    Were you given (a,b) values? From x = ? to ?
  57. Math

    Do you mean, ((cube rt(625y))^3 z^7 ? If so, ((cube rt(625y))^3 z^7 = 625y z^7
  58. math

    Do you have a choice of dimensions?
  59. Finance

    Income----------46,660 Interest-----------225 Dividends-----------80 Income Adj-------1,150 Sub Total-------48,115 Less Item Ded----7,820 Sub Total-------40,295 Less Exempt------3,400 Taxable Income--36,895 Check my math
  60. Finance

    See later post above.
  61. math

    b = price of burgers d = price of dogs 2b + 5d = 8.00 5b + 2d = 9.50 Solve simultaneously
  62. parts of speech

    What is huour? Is this humor?
  63. Geometry

    P = 2L + 2w Since this is a square, L = w P = 2(0.66) + 2(0.66) P = 1.32 + 1.32 P = ?
  64. math

    n = number of adults 6.80n = value of adults 387 - n = number of children 3.40(387 - n) = value of children 6.80n + 3.40(387 - n) = 2444.60 Solve for n = number of adults 387 - n = number of children
  65. Math

    n = number of ones 1n = value of ones 68 - n = number of fives 5(68 - n) = value of fives n + 5(68 - n) = 172 n + 340 - 5n = 172 -4n = -168 n = 42 n = 42 ones = 42.00 68 - n = 26 fives = 130.00 68 bills = 172
  66. Statistic

    Delisha/James, please see your 1st post at 1:21 am under "James". Your post was answered there.
  67. finance

    x = total customers need to buy .03x = 840 x = 28,000
  68. finance

    $8000 add on interest rate of 11% 8000 x .11 = 880 add on interest/yr 880/yr x 4/yrs = 3520 3520/2 = 1760 1760 total interest on loan 1760 add on interest added to principal 8000 principal + 1760 towards principal = 9760 total loan principal 9760/48 mo = 203.33/month payment ...
  69. finance

    18% APR -How is this compounded? Yearly, daily, quarterly, etc?
  70. college algebra

    5 + 2(4y - 4) = 3(2y - 1) 5 + 8y - 8 = 6y - 3 8y - 3 = 6y - 3 2y = 0 y = 0
  71. math

    Put the words into an equation or mathematical expression. 34 multiplied by d 34 times d 34 x d 34d
  72. finance

    I = PRT (Interest = Principal x Rate x Time) 13.2% = .132 6 mo = .5 yr I = 1500 x .132 x .5 I = 198 x .5 I = 99 I don't know what you mean by cost? Interest is a form of 'cost' for the loan.
  73. Math

    Slope of the curve at, y = x^6 at x = -3 y' = 6x^5 at x = -3 6(-3)^5 = -1458
  74. AP Psychology

    Is this a typo? hueristic?
  75. Excel

    I'm not sure I'm following you. Do you just want the total 39.60 in the total column? If so, go to Cell E (col E) and click on 'Auto Sum'. One of the choices are "More Functions". Click on that. A box will come up. Type "Product" in that box...
  76. Excel

    You don't want a sum, you want a product. Use auto sum button, and choose more functions, put multiply or product in the search box and choose 'Product'.
  77. math

    Please check one of your previous posts. You have posted this exact question 4 times today. It has been answered by 3 different tutors. Exactly what is it that you do not understand?
  78. algebra

    -2/5 x = 6/35 Multiply both sides by 35 -14x = 6 x = -6/14 = -3/7
  79. algebra 1a

    Assuming you want to solve these simultaneously. 9m + n = 22 m - 3n = 18 To eliminate variable n, mulyiply the first equation by 3 3(9m + n = 22) = 27m + 3n = 66 Now add these two equations together 27m + 3n = 66 m - 3n = 18 28m + 0 = 84 28m = 84 m = 3 Substitute m = 3 in m - ...
  80. math

    V = Lwh w = width w - 2 = height w + 4 = length 8(w + 4) = V 8(w + 4) = w(w - 2)(w + 4) Solve for w
  81. physics

    thaokieu, the tutors are not here to do YOUR homework. You have to try to solve these yourself. Post your work for each problem and someone will help if you are stuck.
  82. Pre-Calculus-Trig

    Chloe, the tutors are not here to do YOUR homework. You have to try to solve these yourself. Post your work for each problem and someone will help if you are stuck. It helps if you draw a picture. The problems I've done for you today all involve right triangles. So read ...
  83. algebra 1a

    4(8-2x)+2x<5(9+3x) 32 - 8x + 2x < 45 + 15x 32 - 6x < 45 + 15x -21x < 13 When dividing by a neg number, the sense of the inequality is reversed x > -13/21
  84. Pre-Calculus-Trig

    Draw a triangle. The the road would be the base, which is 1 mile or 5280 feet and the side opposite angle A would be 140. You need angle A. You have side a = 140 feet, and side b = 5280 feet. tan A = opp/adj = a/b = 140/5280 tan A = 140/5280 = ? arctan ? = angle A
  85. math

    Please don't repost a question without checking to see if your original post was answered. See your 1st post at 4:51 pm. This was answered for you.
  86. finance

    P = M/(1 + r)^n P = price M = maturity value r = investor's required annual yield/2 n = number of years to maturity x 2 225 = 1000/(1 + r/2)^22 225(1 + r/2)^22 = 1000 (1 + r/2)^22 = 4.4444 take the 22nd root of each side 1 + r/2 = 1.07015 r/2 = 0.07015 r = .1403 r = 14% ...
  87. algebra

    For each equation, pick values for x and solve for y. Pick at least three pair of x,y values and then plot these points. Draw a line connecting these points. Do this for each equation. The point where these line graphs intersect is the solution.
  88. accounting

    Are you sure it's only one journal entry? For the $50 mil transaction, $50 DB to Asset Account, $10 mil paid in cash (CR Cash) and the remaining $40 mil is a loan payable (CR Loan Pay). Since $8 mil principal and interest is due each Dec 31, this must be a 5-yr loan (40 ...
  89. Algebra II

    Correct!
  90. Algebra II

    I = PRT Divide both sides by PT I/PT = R
  91. algebra

    And, your question is? y + x = -4 ?
  92. Algebra

    Do this the same way as shown in your 1st post.
  93. Algebra

    Find ordered pairs to graph these equations. x + y = 6 x = 0, y = 6 x = 2, y = 4 x = 4, y = 2 x = 6, y = 0 x - y = 4 Do the same for this equation. Plot the points, for each equation and draw a line for each set of points. The point of intersection is the solution.
  94. accounting

    You're welcome.
  95. accounting

    If for the following year, the entry should have been to prepaid insurance, an asset account, not to insurance expense. This is because the expense is not for the current year. The expense belongs in the next fiscal year. Current year entry, should have been DB Prepaid ...
  96. Accounting-Journal Entry

    I don't see a question.
  97. math

    Do you mean the wall is 12 feet by 16 feet? If so, set up a ratio. 12 : 16 = 4 : x 12/16 = 4/x Cross multiply 12x = 64 x = ?
  98. algebra

    Do you mean, 5^2 n + 1 = 1/25 ? 25n + 1 = 1/25 multiply both sides by 25 625n + 25 = 1 625n = -24 n = ?
  99. 6th grade math

    'tghias' is NOT correct.
  100. Math PLEASEE

    Do you mean, x^2 - 4 ? x^2 - 4 = (x - 2)(x + 2)
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