Posts by helper

Total # Posts: 1,917

  1. math

    "I tried several combinations using -3,2,and -1 in place of m but still not coming out right." Are you missing part of this problem? There is no 'm' anywhere in your posted problem to replace?
  2. Geometry

    you're welcome
  3. Geometry

    I got angle NMO = 61 same method as above, but correction for LMO = x + 32 Therefore, angle LMO = angle NMO angle NMO = angle LMN - angle LMO angle NMO = 5x - 23 - (x + 32) angle NMO = 5x - 23 - x - 32 angle NMO = 4x - 55 angle LMO = angle NMO x + 32 = 4x - 55 3x = 87 x = 29 ...
  4. Geometry

    Thank you. That's much better. If I am understanding your description, A line that bisects an angle divides it into two congruent parts. Therefore, angle LMO = angle NMO angle NMO = angle LMN - angle LMO angle NMO = 5x - 23 - (x + 3) angle NMO = 5x - 23 - x - 3 angle NMO...
  5. Geometry

    What is LMN? For example, is this a line segment, triangle, or ? How did you get 45.75? You need to post a better explanation. Think of it like this. If you knew absolutely nothing about this problem could you solve it with just the info you posted?
  6. Math Please Help

    by the formula v = (-53 � √3349)/30 √3349 = 57.87 Calculate v using 57.87 as the exact value for √3349.
  7. math/ CIRCUMFERENCE of a circle

    - find out how many feet are in 1 yard - divide 5280 feet by 2 (which would equal half a mile) - take that number and divide by how many feet the circumference of the wheel is
  8. 6th grade math

    5 / 1/3 5 x 3 = 15 1/3 x 3 = 3/3 = 1 15/1 Then find the quotient, 15/1 = 15 IF you did have to divide 5 by 3/9 you would multiple 5 by the reciprocal of 3/9, so 5 / 3/9 = 5 x 9/3 = 45/3 Yes, you were correct IF you had to divide by 3/9.
  9. algebra

    I answered your post below with this same question. Please check to see if your post was answered before re-posting. I pasted the answer here for you. x = liters of 3% solution 3 - x = liters of 10% solution .03x = value 3% solution .10(3 - x) = value 10% solution 3 = liters ...
  10. Math

    log2(log4x)=1 Rewrite as (log((log(x))/(log(4))))/(log(2)) = 1 Divide both sides by 1/(log(2)): log((log(x))/(log(4))) = log(2) Cancel logarithms by taking exp of both sides: (log(x))/(log(4)) = 2 Divide both sides by 1/(log(4)): log(x) = 2 log(4) Cancel logarithms by taking ...
  11. financial analysis

    I am pretty sure it is a current asset. A current asset has a life of one year or less (e.g., inventory) while a noncurrent asset has a life in excess of one year (e.g., machinery).
  12. Math

    Answered in a later post.
  13. algebra

    x = liters of 3% solution 3 - x = liters of 10% solution .03x = value 3% solution .10(3 - x) = value 10% solution 3 = liters of 7.9% mixture .079(3) = 0.237 = value 7.9% mixture .03x + .10(3 - x) = 0.237 Solve for x, which is number of liters of 3% solution. (3 - x) = number ...
  14. math

    (1/2)^x = 1152 rewrite as, 2^(-x) = 1152 Take the logarithm to the base 2 of both sides: -x log 2 = log 1152 -x = (log(1152))/(log(2)) Divide both sides by -1: x = -(log(1152))/(log(2)) x = - 3.061452/0.3010299 x = -10.1699
  15. algebra 2

    See links below under Related Questions. This exact question was answered.
  16. geometry

    Triangle has 180 degrees 22.5 + 101 = 123.5 180 - 123.5 = 56.5 A. 56.5 Obtuse triangle: An obtuse triangle is a triangle having an obtuse angle. Obtuse angle: An obtuse angle is an angle whose measure is more than 90 degrees and less than 180 degrees. B. Obtuse triangle
  17. ela

    FYI, you might be helped faster if you followed directions and put the name of your school subject in the box instead of whatever 'ela' is. This way, a tutor that is familiar with your subject can answer.
  18. algebra

    I don't think this problem is correct or that it can be solved. Either that, or the problem is poorly worded (to me). If they are each saving to buy the same CD's and Juan is only short $3.00, how can it be that when they combine their money they still do not have ...
  19. Math

    What do you mean by 'condense'? Is that what your problem directions say?
  20. college math 209

    You need to use parentheses in this problem. What are the ? for or mean? Square root of 48 or 48yv^2 or ? Same for the other square root. Please use parentheses and retype your problem here in a reply post.
  21. Pre-Calc

    sqrt(x-6)+sqrt(x+10) = 8 sqrt(x-6) = 8 - sqrt(x+10) Square both sides x - 6 = (8 - sqrt(x + 10))^2 Expand out terms on the right hand side x - 6 = x - 16sqrt(x + 10) + 74 16sqrt(x + 10) = 80 Divide both sides by 16 sqrt(x + 10) = 5 Square both sides x + 10 = 25 x = 15
  22. Math

    3p^2 + 4p^2 = 63 7 p^2 = 63 Divide both sides by 7: p^2 = 9 Take the square root of both sides: p = -3 or p = 3
  23. Math

    See your post above.
  24. algebra

    RT = D (rate * time = distance) 4.1 = Emma's rate 3.7 = Mason's rate T = Emma's time T + .08 = Mason's time (48/60 = 0.8h) 4.1T = Emma's distance 3.7(T + 0.8) = Mason's distance Distances are equal to each other 3.7(T + 0.8) = 4.1T 3.7T + 2.96 = 4.1T 0....
  25. math

    A = Lw P = 2L + 2w Lw = 25 2L + 2w = 25 Solve these two equations simultaneously for your answer.
  26. MATH

    Changed subject
  27. MATH

    x^4 - x^2 - 6 (x^2 - 3)(x^2 + 2)
  28. Calc

    See the links below under Related Questions. Similar problems have been posted before and some of the info in those posts maybe be helpful.
  29. algebra 2

    yes, make one up
  30. algebra 2

    Plug a value for x (price of the suit) in each equation and then solve each equation. This way you can see if one results in a lower price. Explain why or why not, one equation results in a lower price.
  31. Algebra 1

    3y + 6x + 3 = 9 + 6x Subtract 6x from both sides 3y + 6x - 6x + 3 = 9 + 6x - 6x 3y + 3 = 9 Subtract 3 from both sides 3y + 3 - 3 = 9 - 3 3y = 6 Divide both sides by 3 3y/3 = 6/3 y = 2
  32. Algabra

    Time = Distance/Rate x = Javier's rate x + 5 = Kathy's rate 57/x = Javier's time 72/(x+5) = Kathy's time Since their time is equal, 57/x = 72/(x + 5) 72x = 57(x + 5) Solve for x
  33. Calculus

    1/(sqrt3)arctan(5/(29(sqrt3))= 0.0572826 Check you values for 1/a and x/a maybe that's where you got hung up | dx/(a^2 + x^2) (3/4 + w^2) a^2 = 3/4 a = (sqrt3)/2 x^2 = w^2 x = w So, you should have got, 1/2(1/(sqrt3/2)arctan (w/(sqrt3/2)) which simplified is, 1/2(2/(sqrt3)...
  34. Calculus

    1/2[2/(sqrt3)arctan(2(x^2+1/2)/(sqrt3) I distributed the 1/2, but backed it out for my above answer...I don't think I made any errors backing it out. Here is the answer, with the 1/2 distributed. I know this answer is right because I double check it with an online ...
  35. Calculus

    integrate x/(x^4+x^2+1) | = integrate symbol u = x^2 du = 2x dx 1/2 du = x dx 1/2 | du/(u^2 + u + 1) Complete the square u^2 + u = -1 u^2 + u + 1/4 = -1 + 1/4 (u + 1/2)^2 + 3/4 1/2 | du/((u + 1/2)^2 + 3/4) w = u + 1/2 dw = du 1/2 | dw/(w^2 + 3/4) 1/2 | dw/(3/4 + w^2) And, ...
  36. beginning algebra

    u^2 - u - 30 = 0 Using the quadratic formula, x =(-b +- (sqrt(b^2 - 4ac))/2a a = 1, b = -1, c = -30 x = 1 +- (sqrt(-1^2 - 4(1)(-30))/2 x = (1 +- (sqrt(1 + 120))/2 x = (1 +- (sqrt(121))/2 x = (1 +- 11)/2 x = (1 + 11)/2 = 6 x = (1 - 11)/2 = -5
  37. beginning algebra

    This was answered the first time you posted it. I pasted the answer below. (u - 1)^2 = 2u^2 - 3u - 29 u^2 - 2u + 1 = 2u^2 - 3u - 29 u^2 - u - 30 = 0 This does not factor. Solve by using the quadratic formula or the method of completing the square. Post your answer and someone ...
  38. College Algebra

    You're welcome and good luck :).
  39. College Algebra

    I'll try, but the formatting here doesn't allow for easy alignment of columns. xxxxxxxxxxxxx-3x^2 - 9x - 9 -2x^2+3x-3 |6x^4 + 9x^3 + 0x^2 + 0x +9 ------------6x^4 - 9x^3 + 9x^2 subtraction-------18x^3 - 9x^2 ------------------18x^3 - 27x^2 + 27x subtraction...
  40. College Algebra

    First rearrange and simplify the numerator to: 6x^4 + 9x^3 + 9 Just divide as your would with any long division problem. If you post your answer I can tell you if you are correct. Is there something in particular you do not understand?
  41. Calculus

    You are correct!! Good job :)
  42. Math Need an explanation

    thanks REINY. After seeing your post, the problem, as I typed without parentheses, is apparent. I don't know why I didn't see that! Parentheses are nice though.
  43. Math Need an explanation

    You need to use parentheses in your problem 5^2/3x25^2/3=25 I have no idea what this means? Is this your problem? 5^2/3 x 25^2/3 = 25 This does not equal 25.
  44. MATH EMERGENCY

    In this form Ax + By + C = 0 Slope m = -A/B y-intercept b = -C/B You are looking for, a negative slope Slope m = -A/B And, a positive y-intercept C/B So, Ax + By - C = 0 Can you answer now?
  45. Precalculus Someone help please

    ((3^-3 * 3^5)/3^-2)^-1/2 ((1/3^3 * 243)/(1/3^2))^-1/2 ((1/27 * 243)/(1/9))^-1/2 ((243/27)/(1/9))^-1/2 (9/(1/9))^-1/2 81^-1/2 1/(sqrt81) = 1/9
  46. Algebra

    x = 1st angle 2x = 2nd angle x + 2x = 180 Solve for x
  47. Math

    [(-1/2)^-2]^3 (1/(-1/2)^2)^3 = 1/(1/4)^3 = 1/(1/64)=64
  48. Math

    8^(-4/3)= (cube rt 8)^-4 8^(-4/3)= 2^-4 = 1/(2^4) = 1/16 Do you understand?
  49. COLLEGE ALGEBRA

    (2r + 8)/4 = (3r - 6)/3 Yes, you are correct, r = 8.
  50. COLLEGE ALGEBRA

    Not correct Post your work and someone can explain what you are doing wrong. First simplify 8/4 and 6/3 and then combine like terms.
  51. Algebra

    Please see your 1st post for response.
  52. Algebra

    C = 6000/(200 - 2x) C = 6000/(200 - 2(75)) C = 6000/(200 - 150) C = 6000/50 C = 120 mil 120,000,000 million or, is it C = 6000/(200 - 2(.75)) C = 6000/(200 - 1.5) C = 6000/198.5 C = 30.2267 mil 30,226,700 million I think it's the first, but I am not a tutor
  53. Algebra

    Re-check your problem. I think you are missing a part here. pollution in a lake modeled by ?
  54. algebra

    I don't think this problem is correct or that it can be solved. Either that, or the problem is poorly worded (to me). If they are each saving to buy the same CD's and Juan is only short $3.00, how can it be that when they combine their money they still do not have ...
  55. Math

    FIFO-first in, first out 300 @ 11.00 150 @ 10.50 200 @ 10.75 175 @ 10.00 100 @ 12.00 Beginning Inventory Total = 925 Ending Total = 300 Difference = sold = 625 FIFO-first in, first out Items sold are assumed to be subtracted from the first ones purchased. Go down from the top ...
  56. algebra

    x = lbs of cheaper coffee 10x = value of cheaper coffee 4 = lbs of better coffee 4 * 20 = 80 = value of better coffee 20 + x = lbs of mixture 5(20 + x) = value of mixture 10x + 80 = 5(20 + x) Solve for x
  57. Math

    Simplify 7sqrt(3/6) Breakdown the radicals 7 (sqrt3)/(sqrt6) 7 (sqrt3)/(sqrt3)(sqrt2) 7/(sqrt2) Rationalize the denominator 7/(sqrt2)*(sqrt2)/(sqrt2) 7/2 (sqrt2) or 7(sqrt2)/2
  58. chemistry

    Have you attempted to do any of the problems you have posted? Post your work and explain where you are stuck and someone will help you. Tutors do not do your homework for you.
  59. Algebra

    f(x)=8x2+4*4x you need to use parentheses do you mean? 8x^2 + 4*4x or? f(x)=(8x^2 + 4)*4x
  60. College Algebra

    What in particular do you need help with? Use long division as you would with any other long division problem. If you post your answer I can check it for you.
  61. beginning algebra

    (u - 1)^2 = 2u^2 - 3u - 29 u^2 - 2u + 1 = 2u^2 - 3u - 29 u^2 - u - 30 = 0 This does not factor. Solve by using the quadratic formula or the method of completing the square. Post your answer and someone will check it for you.
  62. beginning algebra

    15v^4w^8 and 9vw^5x^4 You need to find the least common factors that these two expressions have in common. LCM = 3vw^5
  63. beginning algebra

    2 + 7/y = 3/5 Get rid of the denominators Multiply both sides by y 2y + 7 = 3/5 y Multiply both sides by 5 10y + 35 = 3y Subtract 10y from both sides 35 = -7y Divide both sides by -7 -5 = y y = -5
  64. Algebra 1B

    incomplete problem. are you sure you are not missing part of the problem? your problem cannot be solved as stated.
  65. computers

    see the first two links below under related questions. this exact question was posted and answered below. also, you might want to look at some of the links supplied within these posts.
  66. algebra

    reread your post, not enough info is given and it doesn't make sense. copy the problem exactly from your book.
  67. algebra1

    yes, that is correct
  68. xacc280

    post the subject in the 'school subject' box' along with your specific question. What is "week 2, day 7 assignment"?
  69. phy

    see 1st link below under related questions. a very similar question was answered.
  70. Geometry

    sorry, I didn't know that. you should have said that in your 1st post above. the tutors would see that this question was answered and refer you to the original answer.
  71. Geometry

    This was answered by DrRuss on 1/21 at 6:39 am. I can't link so I pasted his answer below. I would start with a drawing as I do for most problems. Draw a reactangle 4x one side and b the other. The perimeter is then 4x+b+4x+b=11 8x+2b=11 if this is folded to a tube then ...
  72. biology

    see 1st link below under related questions. this exact question was posted recently. a link is provided with info that you might find useful.
  73. geometry

    and? please recheck your problem. not enough info.
  74. Physics

    see link 1 below under related questions. a very similar problem was answered.
  75. algerbra

    not enough info, please re-check your problem.
  76. ALGEBRA

    see your first post below, I solved it for you and explained
  77. maths

    P = a + b + c add the three sides P = 8x - 7w + 3x + 9y + 3y + 5w combine like terms
  78. math

    by the cofunction property cos B = sin A so, if angle B = 33 angle A = ?
  79. precalc

    Sine is an odd function, sin(-θ)= -sin θ
  80. precalculus

    2 rads to converts radian to degrees, multiply by 180/pi 2 * 180/pi = (2 * 180)/3.14 = ?
  81. algebra

    3x + 9y = 18 y = mx + b solve for y, 9y = -3x + 18 y = -3x/9 + 18/9 simplify the equation
  82. Math

    A = pi r^2 pi = 3.14 r = 5 A = (3.14)*(5^2) A = (3.14)*(25) A = ? m^2 do the multiplication for your answer I don't know what this sentence means. Is this the same as the surface area and it would be 10m?
  83. ALGEBRA

    I followed that 3 + x(12*4) = 24 multiply 12*4 3 + 48x = 24 subtract 3 from both sides 3 - 3 + 48x = 24 - 3 48x = 21 divide both sides by 48 48x/48 = 21/48 x = 21/48 reduce fraction x = 7/16
  84. ALGEBRA

    what is 'pemdas'?
  85. ALGEBRA

    3 + x(12*4) - 24 if that is the problem then, 3 + 48x - 24 48x - 21 48x = 21 x = 21/48 x = 7/16 you can only combine 'like terms' x terms can only be added to other x terms, constant terms can only be added to other constant terms. do you understand?
  86. ALGEBRA

    I need to see the original problem first to help you. why did you add 48x + 3 to equal 51x? then the 'x' is gone in the next line?
  87. Statistics

    see 1st link below under 'Related Questions' for this exact problem
  88. Taxes

    No. Each partner includes his or her share of the partnership's income or loss on his or her personal tax return.
  89. 5th grade

    17,13,27,33,25 put the numbers in order, from smallest to largest 13, 17, 25, 27, 33 the median is the number in the middle so, the median would be 25 for the mean, add all the numbers and then divide the sum by the number of numbers that you added. 13 + 17 + 25 + 27 + 33 = ? ...
  90. Algebra -- Help

    Train A has a lead of 12 min. RT = D T = time train B T + .20 = time train A 90T = distance train B 80(T + .20) = distance train A 80(T + .20) = 90T 80T + 16 = 90T 16 = 10T T = 1.6 hours train B overtake train A = 1.6 hours
  91. geomitry

    x = 1st angle 90 - x = 2nd angle 5x - 16 = 3rd angle x + 90 - x + 5x - 16 = 180 solve for x
  92. math

    what is the figure? square, cube, sphere, etc?
  93. algebra

    -6m + 3/11 = 77/11 to solve subtract 3/11 from both sides then divide both sides by -6
  94. Pre-algebra

    A = 1/2 bh multiply both sides by 2 2A = bh to find h, divide both sides by b can you finish this?
  95. math

    sketch a right triangle A = 55 degrees c = 50 a = unknown (kite height) sin 55 deg = a/c = a/50 = 0.8192 solve for a
  96. help math ahhhh

    9. 5x + 4y = 1 3x ? 4y = 7 what does ? mean ?
  97. mathematics

    simplify 2/(x^(-3/2))= 2x^(3/2)
  98. AiMS MATH

    Natural numbers are the counting numbers, 1, 2, 3, etc Integers are the counting numbers, together with their opposites and zero. whole numbers are the counting numbers without the zero. Rational numbers are the set of all numbers that can be written as quotients, ie, 1/2. ...
  99. math

    yes, correct good job! :)
  100. math

    5 * (thirdrt 48) - (thirdrt 750) breakdown the radicals 5 * (3rt 8)(3rt 6) - (3rt 125)(3rt 6) can you do this now?
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