hi. i have to factor this expression. 3y^2-16y-12 i got (y-4)(y+1) i know it not right but i don't know what i did wrong.

118,274 results

  1. Algebra

    hi. i have to factor this expression. 3y^2-16y-12 i got (y-4)(y+1) i know it not right but i don't know what i did wrong.
  2. Algebra

    hello.i have to factor this expression. 3y^2-16y-12 i did my work and i got (y-4)(y+1) is it right?
  3. math help urgent

    what di di do wrong in this??? the question is: x-8y=18 -16x+16y=-8 i did : first multiplied the first equation with 2 then 2x-16y=36 -16+16y=-8 ----------- -14x=28 x=28/-14 x=-2 now x-8y=18 (-2)-8y=18 -8y=18+2 -8y=20 y=20/-8 y= 2.5 plz help me what did i do wrong??
  4. math-calculus

    15+2y-y^2/3y^2-16y+5 (5-y)(3+y)/(3y-1)(y-5) i factor out a negative one from (5-y) to make it same like (y-5) (-1)(-5+y)(3+y)/(3y-1)(y-5) i cancel off y-5's. and i get (-1)(3+y)/(3y-1) but the real answer have to be 3+y/1-3y what i doing wrong?
  5. Alegra

    Suppose that a spreadsheet contains the following values. A1 6 B1 -4 C1 2 D1 3 Determine the value of cell E1 if it contains the following formulas. a) +A1 + B1 E1= 2 got that one right b) +4*A1 + 5*B1 got that one wrong c) +C1*(A1 +3*B1) got that one wrong d) +A1+...+D1 or ...
  6. Math

    what factor do 4x^2 +13x+3 and 8x^2+22x-6 have in common? i try and got answer of 12, am i right or wrong?
  7. Math

    Factor: (x^3)(z^6)-27y^9 81x^4-16y^4 2x^3+16y^3
  8. algebra

    What are the factors of the following trinomial? 16y^2 - 12y + 2 a) (4y - 1) (4y - 2) b) (2y - 1) (8y + 2) c) (16y - 1) (y - 2) d) (8y - 1) (2y - 2) i think a but i can be wrong
  9. math

    Factor the expression. x2 + 6x + 48 a) (x + 1)(x + 48) b) (x + 6)^2 c) (x + 6)(x + 8) d) Prime Polynomial e) Not factorable i got e... am i doing something wrong
  10. MATH

    i need to write each expression as a product of the same factor: * = multiply can you check these please a^2 i got a*a 19^3 i got 19*19*19 -6^2 i got 6*6*-1 -x^3 i got x*x*x*-1 (-5)^4 i got (-5)*(-5)*(-5)*(-5)*(-5) 4^3 i got 4*4*4 -(10)^2 im not sure how to do?? 20^1 i got ...
  11. Math

    We can rewrite the expression 16 + 8 as 8x(2+1). Notice that 8 is the greatest common factor of 16 and 8. Use this same method to rewrite the expression 24 + 36 as the product of the greatest common factor of 24 and 36 and the sum of the remaining numbers. Answer: I added 24...
  12. math exponents

    i need to write each expression as a product of the same factor: * = multiply can you check these please a^2 i got a*a 19^3 i got 19*19*19 -6^2 i got 6*6*-1 -x^3 i got x*x*x*-1 (-5)^4 i got (-5)*(-5)*(-5)*(-5)*(-5) 4^3 i got 4*4*4 -(10)^2 im not sure how to do?? 20^1 i got ...
  13. Algebra

    Ok I got two I need help with : 1. Factor Completely 7x^2 + 49x + 42 I get 7x^2 + 7x + 42x + 42 then 7x(x+1) but the right side is confusing me. I know it should be (x+6). So the answer is 7x(x+1)(x+6) But I get 7x(x+1) 7(6x+6). What am I doing wrong? 2.Factor completley: x^...
  14. Algebra 2

    Can this expression be factored? 4x^2+9 My homework assignment says to factor completely and this is one of the problems but I don't think this expression can be factored. Am I wrong? If so how do I factor it.
  15. college algebra

    (x-3)^2+(y-2.5)^2=7.25 Make a new equation that shifts up 1 unit and to the right 2 units. I got (x-5)^2+(y-1.5)^2=7.25, but I got it wrong on my test. Could you please tell me where I might have gone wrong? Thank you!
  16. college algebra

    (x-3)^2+(y-2.5)^2=7.25 Make a new equation that shifts up 1 unit and to the right 2 units. I got (x-5)^2+(y-1.5)^2=7.25, but I got it wrong on my test. Could you please tell me where I might have gone wrong? Thank you!
  17. algbera

    i got 16y^8/6x^6.please tell me if it is right
  18. Algebra

    Hi! I was wondering if anyone might be willing to check my answers for these... I have a suspiscion they are wrong, but I don't have any correct answers to compare them against. If I got them wrong, would you mind giving a brief explanation? Thank you for your help! (x^2-1)+(-...
  19. Chemistry

    I'm doing chemical equilibrium, and there's a question in my lecture notes. Can someone check my answers and tell me if i'm right or wrong? Thanks! The Kc expression for this reversible reaction: 3Fe(s) + 4H2O (g) --><-- Fe3O4(s) + 4H2 (g) is [H2]^4 / [H2O]^4 Am I ...
  20. Math

    Factor each expression 1-9a^2/a+1 times 4x^2-y^2/x+y Here is what I got: (1-3a)(1+3a)/a+1 times (2x-y)(2x+y)/x+y what am i doing wrong? The final answer is suppose to be 1-3a
  21. Algebra

    Totally confused-learned this today and I don't get it-Please help Write the standard form of 9x^2 + 4y^2-72x+16y+124=0 I think the first step is to take the constant to right side so I have: 9x^2 + 4y^2-72x+16y=124 But then I'm lost!
  22. Math

    I have this worksheet, it has a bunch of different kinds of questions, but i know all the stuff we learned, i just don't know which ones i use. 1) factor each expression, 8x+10 2) Use Foil to factor each expression, x2-5x+6 3) Use foil to factor each expression, n2+n-20.
  23. Algebra

    I had to factor 5x^3-10x^2+43x-6. I got 5x(x^2+-2x)+3(x-2). My teacher said this was half right. What did I do wrong then? Thank you!!
  24. Math/Fractions

    I have this fraction: 6 2/9 + 1 3/4 - 3 5/6= Okay First I changed the mixed numbers into improper fractions. I got this: 56/9 + 7/4 + 23/6 Then I thought you have to find the least common denominator, which for 9,4, and 6 would be 36. Then I muliplied the fractions by 4, 9, ...
  25. Maths

    There was a question: A gallon jug of milk is 3/4 full. After breakfast, you drink 1/12 of the milk. What fraction is the gallon is left? And here was my answer: 1/12 drank --> 11/12 left 3/4*11/12=11/16 But I got the question wrong. Did I get it wrong? I got it correct, ...
  26. Algebra 2

    so i got a question and would like to know if i did this right For problems 1 through 38, transform the given expression to simple radical form. You can check your answer by evaluating it and the original expression by calculator. on the previous page this definition was given...
  27. College Algebra

    Use the Laws of Logarithms to expand the expression. loga(x^5/yz^6) and this was my answer and I got it wrong can any one tell me what I did wrong and what they got? 5log(x)-log(y)-6log(z)
  28. Algebra

    Add and subtract the rational expressions as indicated. Be sure to express your answer in simplest form ((9)/(7x)) + ((1)/(2y)) -1 I got an aswer of (16y)/(7x+2y+1)) but when I submit it shows me as wrong. Can anyone help, thanks
  29. math

    Completely factor the expression 16t3 − 50t2 + 36t. A. 2t(8t − 9)(t − 2) B. Prime C. 2t(8t + 9)(t + 2) D. 2t(8t − 25t + 18)   Completely factor the expression 48u4v4 − 18u2v2 − 3u8v5. A. Nonfactorable B. 3u2v2(16u2v2...
  30. math

    emily's age divided by 3 in algebraic expression? My answer is e / 3 am i right or wrong? the product of r and 8 in algebraic expression? My answer is 8 * r am i right or wrong?
  31. Chem

    Give the number of unpaired electrons present in a ground-state atom of Tl. I got 5, which isn't right. ndicate which species in each pair has the higher ionization energy. Choose at least one answer. a. Between K and I, I b. Between K and I, K c. Between Al and Al+, Al d. ...
  32. Factor Completely

    c^2 - 4c - 32 I got (c - 4) (c - 8) but i think its wrong because the do not match to make it squared, what am I doing wrong?
  33. Math

    I have a question that I answered and I'm not sure that it is right. Here is my question: Use a calculator to help you write the prime factorization of 51,051. Here is my answer: If the sum of the digits of the number is divisible by 3, then 3 is a factor of the number. ...
  34. algebra

    I have 70 problems today and have trouble near the end if I can get help on the ones I am going to to post I can do the last 15. I so appreciate help with understanding the steps. I will split the posts. Thank you very much. I will use < as square root sign. #54 -<18c...
  35. Algebra 1

    We have to factor this: 4y^2-5y+1 I got (4y-1)(y-1) Is this right?
  36. Factoring

    Factor: 14z2 - 49z + 35 I got 7(z^2-7z+5) but I got it wrong? Please correct me.
  37. PLease Help Me IN Math

    Problem: 25-x^2 6 ------ * --- 12 5-x What I Got: 5-x --- 2 *Please Check My Work And Tell Me If I am Correct or wrong.If I am wrong please help me as much as possible.Thank you~ Wrong. When are you going to factor the 25-x^2 ? The 5-x then will divide out. oh...so then will ...
  38. Math

    I had to simplify the expression: -5exponent2(squared) I got the answer of 25 wrong. Why is that wrong?
  39. basic Integration

    I have three questions which I apparently have 'wrong' according to the book, but I've done lots of other questions which I've gotten right using the same method and I have triple checked these answers for these three questions so I was wondering if someone could tell me if I ...
  40. math

    The area of a square garden is represented by the quadratic expression 9x^2 - 12x + 4. The length of one side of the square garden is 91 inches. What is the value of x ? Hint: Since the garden is in the shape of a square, the expression 9x^2 - 12x + 4 is the product of two ...
  41. Math I really need help!

    Multiply and simplify by factoring. Assumem that all expressions under radicals represent nonnegative numbers. ∛(y^13) ∛(16y^14) ∛y^13 x 16y^14 ∛16y^27 Am I even close here?
  42. Math

    Half of a pizza was broccoli and half was mushroom. George ate 2/3 of the broccoli and 1/4 of thee mushroom part. How much of the pizza did he eat? I did this problem but I wasn't sure of my answer so I needed someone to see if I am right or not. My answer is 1/6 and I got ...
  43. math-check my work

    Differentiate y=x(x4+5)3 d/dx = [x(x4+5)3] d/dx = [f(x)g(x)] = f(x)g’(x)+g(x)f’(x) d/dx = [x(x4+5)3] = x • d/dx (x4+5)3 + (x4+5)3 • d/dx x g’(x) = d/dx (x4+5)3 = 3(x4+5)2 • 4x f’(x) = d/dx (x) = 1 = (x) • 3(x4+5)2 • 4x + (x4+5)3 • 1 (factor out the common ...
  44. Algebra

    Simplify the rational expression. (45y-9xy)/(x^2y-25y) I got an answer of 9y/y(x+5) but it seems to be wrong Could anyone see what I did wrong. Thank you
  45. Maths

    Find the coefficient of x^7y^4 in the binomial expansion of (1/4*x -16y)^11 so far i have 11Ck(1/4 x)^11-k (-16y)^k=11Ck*(1/4)^11-k *x^11-k *(-16)^k * y^k
  46. Calc

    Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 How do I simplify this so I can take the derivative For Further Reading * Calc - Michael, Sunday, November 25, 2007 at 4:17pm Profit=p(-p^2+33p+9)-9(-p^2+33p+9)+100 p(-p^2 + 33p + 9) Just distribute the p in. -9(-p^2 + 33p + 9) Find the ...
  47. 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 factor out the above ...
  48. Algebra

    I have two questions: first question is : [ 8(6-1)-1]-[2-(5-2)] i got 40 as my answer is this right? And second question is -y + - 80 an equivalent expression to -(y+80)? Because I got -y + - 80.
  49. Math

    Subtraction with renaming Am very confused. Am trying to teach my little brother but am getting everything wrong. I have the right answer but the work does not add up to that. 6 - 3 2/5 I got 3 2/5 but the answer is 2 3/5 I don’t understand can you explain what I have ...
  50. Maths

    Determine the exact expression for the following. - cos(pi/4)=(x/60) I got x=60/√2 Is that correct? Also, I had a lot of trouble with this one: cos(pi/6)=(z/60) I got z=(√3 (60/√2))/2 That doesn't seem right, but I don'r know what I', doing wrong. Also, I ...
  51. algebra

    factor the following... y^2-16y+64
  52. Algebra 2/Statistics

    From a squad of 12 cheerleaders, 10 will assemble themselves into a 4-level pyramid at the Homecoming rally. 1.) How many different combinations of cheerleaders can be used to build the pyramid? For this I got 12C10=66......Right or Wrong? 2.) The coach decides that Alexis ...
  53. algebra

    use the identity a^2+b^2=(a+bi)(a-bi) to factor 16y^2+1
  54. pre-algebra

    factor expresions: 2+16y and 4-16m
  55. algebra

    i have got a lot of math problems to do...if you can just help me with 3 of these problems...i could do the rest...thank you so much!! factor each expression::: 1. 20xy 2. 36g^2h^2 3. 44m^2n
  56. Algebra S.O.S

    I've been working on this a while, and I thought I got it right...until I got to step two. When I tried "veryfying my solution point" The lines didn't intersect at (4,2). I don't know, it's probably a silly little mistake on my part, but I can't get it quite right. The problem...
  57. math estimate

    can you check: i need to estimate the value of each expression: 7+3q: q = 7.6 i got: 29.8 estimated to : 30 2m^2 - 3m ; m = 1.6 i got: 0.32 estimate to : .3 is that right? x^2 + 7x - 19; x = 4.21 i got: 28.1941 estimate to: 28.2 is that right?
  58. Algebra where did I go wrong

    evaluate the expression 5C2 5! 5-2!= my 1st answer was 20 than 120 either one was right. where do I go wrong Thank so much for your time
  59. school work

    Factor the following polynomials 9-x^2 4x^2+81-36 4y2^+16y+16 x2^-25/x+5
  60. math,algebra

    Can someone explain this to me plese: to factor a number you.... and then can you explain to me To factor an algebraic expression into prime factors means..... thanks This is how I would complete these two sentences. To factor a number, you break it down into smaller parts. To...
  61. math

    Andrew factored the expression 54x^3-30x^2+15x as 5x(9x^2-6x+3) but when Melissa applied the distributive law and multiplied out 5x(9x^2-6x+3). she got 45x^3-30x^2+15x. thus andrew's solution does not appear to check. why is this? eplain your reasoning and correctly factor the...
  62. algebra

    Andrew factored the expression 54x^3-30x^2+15x as 5x(9x^2-6x+3) but when Melissa applied the distributive law and multiplied out 5x(9x^2-6x+3). she got 45x^3-30x^2+15x. thus andrew's solution does not appear to check. why is this? eplain your reasoning and correctly factor the...
  63. Algebra

    Megan factored the expression -12x^2 +52x-35as (-2x+5)(6x-7). But when Jacob applied the FOIL principle and multiplied out (-2x+5)(6x-7), he got -12x^2+44x-35; thus, Megan’s solution does not appear to check. Why is that? Please help Megan to understand this better. ...
  64. Algebra

    I am trying to factor polynomials by grouping the first two terms and the last two terms, but I am having some issues, I have done a few correct since I can look at the answers to the odd problems but it is taking me arund 25 minutes per problem. here is a sample problem in ...
  65. expressions and equations

    I have a lot of homework each night and I don't get it at all one question was 0.5(12z-7)-3.5z+3.5 and I got it wrong just because I didn't do it and I didn't understand it.I got 7z as my anwser.What did I do wrong?Help PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
  66. Math Reiny?

    Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) I got ∛16y^27 Am I right?
  67. Pre Calculus

    So I only have 3 homework questions left and I can't seem to figure out how to solve. I've tried solving them, but I keep getting them wrong. Any help? Factor the polynomials: a) 3x^2 +19x - 40 b) x^4 - 25x^2 Simplify the expression completely: (1/(x-h)^3 - 1/x^3)/8h
  68. alg.

    solve the system by addition: -5x-9y = -5 x+5y=-15 I've tried this one over and over, but I can't seem to get the right answer. I don't even really know where to start. each time i try to do it, i go about it a little differently and i'm completely lost, pls help!! from the ...
  69. Algebra

    I have a few more questions that I either need help with or just need checking. Is the algebraic expression a polynomial? if it is write the polynomial in standard form, 1. 6x-9+8x^2 I got Yes; 8x^2+6x-9 Perform the indicated operations. Write the resulting polynomial in ...
  70. Using the factor Theorem

    use the factor theorem to determine whether x-c is a factor of f(x) f(x)=x^3+8x^2-18x+20; x-10 I have a doubt in my answer, i determined that x-10 is not a factor... am i right? please verify as my exam is tomorrow night at college. thank you for your time and hard work:)
  71. Math(Please Check Again)

    25-x^2 6x^2 ------ * ------ 12 2x *I got: 5-x/2 No. Try again. Can you tell me what I did wrong please.? You have to factor the numerator, you should have two factors for the first, and one for the second. In the denominator, you will have 24 x. I think the x divides out, and ...
  72. math

    Completely factor the expression 2a3 − 128. A. 2(a − 4)3 B. 2(a − 4)(a2 + 4a + 16) C. 2(a3 − 64) D. Prime Completely factor the expression 7(x − y) − z(x − y). A. Prime B. (x − y)(7 − z) C. (x − y)(7 + z) D. (x −...
  73. math

    Im a little confused can someone please help? Solve: -7x-24=-26 1/3 This is what i did, not sure if I did it right. -7x-24=-26 and 1/3, -24 from both sides -7x= 2 and 1/3, then divide by -7 and got x= -2 and 1/3 over -7 I have no idea how to right that so I know it has to be ...
  74. algebra

    Solve for s in this equation. Depreciation. D=C-s/n This is my answer D-C=C-s/n-c D-C=-s/n -n(D-C)=-s/n*(-n) -nD+nC=s s=n(C-D) Please chack to see if this is correct Looks fine to me. A slightly shorter (by 2 lines) rearragement is: D=C-s/n D+s/n=C s/n=C-D s=n(C-D) but hey, ...
  75. Algebra

    I'm not sure how to factor 3x^3-12x^2+3x. I tried separatring the 3x so that 3x(x+1)(x-4, but I got -3x^3+-12x^2-3x^2+12x. Can you show me where I went wrong and how to properly factor this? Is there a general rule or tip for this sort of factoring with a number to the third ...
  76. math

    Hi! I have a question Heres the problem: 3-2[6-(4y-1)] I got -8y-11 but it wasn't right and I don't know what i did wrong help please!
  77. Math - PreCalc (12th Grade)

    Which rectangular equation corresponds to these parametric equations? x = 0.2sec t and y = -0.25tan t A) 25x^2 − 16y^2 = 1 B) 25x^2 + 16y^2 = 1 C) x^2 − 16y^2 = 25 D) 25y^2 − 16x^2 = 1 E) 4x^2 − 16x^2 = 1
  78. pre calc trig check my work please

    sin x + cos x -------------- = ? sin x sin x cos x ----- + ----- = sin x sin x cos x/sin x = cot x this is what i got, the problem is we have a match the expression to the equation work sheet and this is not one of the answers. need to figure out what im doing wrong so i can ...
  79. math

    Shorten fraction: (x^2+2x)/(4x+8)= ? and reduce: (8a^3*b*a^-2)/(2b)^2= ? First. In the numerator, factor out an x. In the denominator, factor out a 4. this will leave a common factor that can be divided out. Second.change the numerator to 8ab. Check that to see if it is right...
  80. Chem

    ndicate which species in each pair has the higher ionization energy. Choose at least one answer. a. Between K and I, I b. Between K and I, K c. Between Al and Al+, Al d. Between Al and Al+, Al+ e. Between Ar and Cl-, Ar f. Between Ar and Cl-, Cl- g. Between Mg and Ca, Mg h. ...
  81. algebra

    Megan factored the expression 12x^2+13x-14 as (3x+2)(4x-7). But when Jacob applied the foil principle and multiplied out(3x+2)(4x-7), he got 12x^2-13x-14; thus, Megan's solution does not appear to check. Why is that? Please help Megan to understand this better. Explain your ...
  82. Math

    9x^2+16y^2-18x+64y-71=0 find the coordinates of the center, the foci, and the vertices of this ellipse. 9x^2+16y^2-18x+64y-71=0 9x^2-18x+16y^2+64y=71 9(x^2-2x)+16(y^2+4y)=71 9(x^2-2x+1)+16(y^2+4y+4)=71
  83. math

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ...
  84. math

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ...
  85. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ...
  86. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ...
  87. algebra

    Megan factored the expression (-12x^2+52x-35) as (-2x+5)(6x-7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x-7) he got (-12x^2+44x-35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ...
  88. Math for Trish To Help Me With

    Factor the following. You will earn 5 points for each polynomial that is factored correctly. Please label your individual answers with a – f. a.) 4x2 - 25 b.) 3x2 + 6y c.) x^2 - 7x + 10 d.) 2x^2 - 9x – 18 e.) 2ax + 6bx + ay + 3by f.) 6x^2 + 12x – 48 *Can you help me with...
  89. algebra 2..again

    2y^3-10y^2+12y...need to factor again..i got to the second step... 2y(y^2-5y+6)...think that's right but i don't get how to factor that out..help plz..
  90. Gr. 10 Math

    Evaluate each expression for the given value(s) of the variable(s). 2x^2 - 3xy + 4y^2 for x=2, y=-1 My Answer: (2(2^2)) - (3*2*-1) + (4(-1^2)) = 10 Text Book Answer: 18 Please help. Am I doing something wrong? I redid the expression 3 times and still got 10. But why textbook ...
  91. Intermidia Algebra

    Andrew factored the expression -12x^3-28x^2-3x as -4x (3x^2-7x+9). But when Melissa applied the distributive law and multiplied out -4x (3x^2-7x+9), she got -12x^3+28x^2-36x; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this...
  92. Probability and Statistics

    Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
  93. Probability and Satistics

    Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
  94. cacl

    integral of x^3+65/X^+7x+12 dx when i solved i got x^2/2-7x+64ln(x+4)-111ln(x+3)+c however this isn't the right answer....what have i done wrong??
  95. Probability and Statistics

    Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
  96. math

    i am stuck on this problem: Find the slope and y-intercept of the line represented by the table of values below, then answer the question that follows. x y -10 -310 5 80 12 262 19 444 What is the sum of the slope and the y-intercept? For the y-intecept i got 26 for the slope i...
  97. Algebra 1

    I need to factor the expression t^2 + 4tv + 4v^2 I got this answer: (t + 2v)(t + 2v) Check my work? Thanks!
  98. ECON, HELP?!?

    Economyst, My prof says only a was right at 100 billion, but b, c, and d were wrong?? I appreciate the help anyway cause she was on vacation. I have posted the answers she got.... 2. The goverment raises taxes by $100 billion. If the marginal propensity to consume is 0.6, what...
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    I THINK I MAY HAVE DONE MY HOMEWORK WRONG BECAUZE IT SAYS TO : ESTIMATE THE PRODUCT OR QUOTIENT. SO WOULD THAT MEAN TO ACTUALLY DO WORK THEN ESTIMATE THE PRODUCT OR QUOTIENT LIKE FIRST -72 X 57 = -4104 OR ESTIMATE; -4000 ? I AM CONFUSED ABOUT WHAT IM SUPPOSE TO FIND : ...
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    Completely factor the expression 16t3 − 50t2 + 36t. A. 2t(8t − 9)(t − 2) B. Prime C. 2t(8t + 9)(t + 2) D. 2t(8t − 25t + 18)   Completely factor the expression 48u4v4 − 18u2v2 − 3u8v5. A. Nonfactorable B. 3u2v2(16u2v2...
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