1. calculus

    Suppose A is a positive real number and mA is the average value of (sin(Ax))3 on the interval [0; 2]. Compute mA. what is lim mA as A goes to infinite?
  2. Chemistry

    Compute the number of molecules of water driven off when 12.05g of sodium acetate trihydrate is heated.
  3. Science

    which action would result in the more (financially) valuable product: taking one proton from each nucleus in a sample of gold or adding one proton to each gold nucleus? Taking a proton (p) away 79 AU - 1p = atomic number 78?? Adding a Proton Au79 + 1p =
  4. English

    1. I will die. 2. I intend to die. (Are both the same in meaning?) 3. You shall die. 4. I will kill you. (Are both the same in meaning?) 5. He shall go there. 6. I will make him go there. 7. I will let him go there. (Are they the same in meaning? Does #5
  5. Math

    I don't get what the problem is asking? "Which of the following shows the next step using the least common denominator simplify 7/8 - 5/6?" there's 4 answers, A. (7/8 x 3/3) - (5/6 x 4/4) B. (7/8 x 4/4) - (5/6 x 3/3) C. (7/8 x 5/5) - (5/6 x 7/7) d. (7/8 x
  6. Help Math

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)
  7. ALGEBRA

    which of the following are reasonable answer for the product of two negatives and a positive a. 20** b. 10 c. -20 d. -10 Which statement about the product is true 5.5⋅√5 a. The product is rational b. The product is irrational**** c. The product
  8. ALGEBRA

    Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;
  9. ALGEBRA

    Hi. I have the answer and have worked this out. I just want to make sure I'm correct. I must solve using addition and multiplication principles. 8x + 2 -7x (greater then or equal to sign here) 14. I know I am to collect like terms first so, 1x+2 = 14;
  10. calculus

    Consider ∫R∫syDA, where R is the square R=[0,1]x[0,1]. Let us compute some Riemann sums. For any positive integer n we partition R into n^2 little squares Rij each with sides 1/n long. Within each little square we evaluate the integradn at the
  11. calculus

    Consider ∫R∫xydA, where R is the square R=[0,1]x[0,1]. Let us compute some Riemann sums. For any positive integer n we partition R into n^2 little squares Rij each with sides 1/n long. Within each little square we evaluate the integradn at the
  12. Reading Comp.

    A blanket of thick fog covered the area Visibility there was almost zero How are the two related? a. The two sentences establish a comparison b. The second sentence contradicts the first c. The first sentence explains the meaning of visibility d. The
  13. Algebra 2

    I need to find x of the quadratic function y=-5/3x^2-x-4. I'm supposed to use the formula x=-b/2a. The negative sign only applies to b. A=-5/3 and B=-1. When I substitute these values in I get -(-1)/2(-5/3). After working this out I get 1 over -10 over
  14. biology

    Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCACCTAGGTTCCG-5’ You also
  15. BIOLOGY

    Consider the following 45 base-pair (bp) DNA sequence: 1 10 20 30 40 | . | . | . | . | . 5’-CGCACCTGTGTTGATCACCTAGCCGATCCACGGTGGATCCAAGGC-3’ ||||||||||||||||||||||||||||||||||||||||||||| 3’-GCGTGGACACAACTAGTGGATCGGCTAGGTGCCACCTAGGTTCCG-5’ You also
  16. Calc 3

    Compute the flux of the vector field v(x,y)=(x,y) across the circle around the origin of radius 3. Compute the flow of the vector field v(x,y)=(x,y) along the circle around the origin of radius 3. I know the equations to find flux and flow, but I don't
  17. stats

    sample was obtained from a population with unknown parameters. scores: 6, 12, 0, 3, 4 compute the sample mean and sandard deviation. compute the estimated standard error for M.
  18. Compute Probability 😯😢

    Compute the probability of randomly drawing five cards from a deck and getting 3 Aces and 2 Kings. (Give your answer as a fraction.)
  19. Calculus

    If you had a computer that could track the number of cereal boxes on the shelf of a market continuously over a 1-week period would you expect the graph of the number of boxes on the shelf versus time to be a continuous (unbroken) curve? Explain your
  20. English Grade 10

    How can I improve my thesis for a comparative essay: Although both ¡°All is Calm¡± and ¡°The Bicycle¡± portray love and problems between family members, the protagonists in the stories experience drastically different journeys and each learned
  21. law & ehtics

    I,m doing aresearch paper and i have to answer questions. Do i write the question in my paper or do i just put them in my intro? the question has number so do i put them in there too?
  22. Math

    Maize counted her dime.when she put them in groups of 4 ,she had two dimes left over.when she put them in group of 5,she had one left over.what is the smallest number of dimes she could have.if she has more than 10?
  23. Algebra/Math

    The difference of two numbers is 29. If five times the smaller number is twice the larger, the result will be one. What is the larger number ? Please help.. I need an answer in 10 days. Thank you, much appreciations.
  24. Eugenol

    I isolated eugenol from cloves in the lab using extraction and steam distillation but we did not do infrared. The lab report question is: Description of Method. I'm not sure what to put. We prepared the spice, did steam distillation, extracted the
  25. maths

    She adds the to number together and divides the result by 2her answer is 44 one of EMilys numbers is 12what is Emilys other number?
  26. Algebra

    need help checking Create a 2-column proof for the following equation. X + X + 10 + 2(2X + 10) = 180 X + X + 10 + 2(2X + 10) = 180 (Given) 2X + 10 + 2(2X + 10) = 180 (Simplify) 2X + 10 + 4X + 20 = 180 (Expand) 6X + 30 = 180 (Simplify) 6X = 180 - 30
  27. Math

    The census taker says, "I need to know the ages of your children." The mother replies, "I have no one-year-olds. The product of my children's ages is 90, and the sum of their ages is the same as my house number." The census taker replies. "I can see the
  28. Chem

    Which of the following is the correct expression for the rate of the following reaction? Note: not all species are gaseous. CuO(s) + H2S (g) <--> Cu(s) + H2O (g) A. [Cu] x [H2O] / ([CuO] x [H2S]) B. [H2O] / [H2S] C. [CuO] x [H2S] / ([Cu] x [H2O]) D.
  29. Calculus

    "Evaluate the following indefinite integrals: "S" (3x^2 -2)/(x^3 - 2x + 1)^3 dx" We're practicing the substitution rule, and I know how to do it, but I don't know what/how to substitute in this question. btw: "S" is the integral sign.
  30. Algebra, check please?

    5(N+2)=3/5(5+10n) And then I wrote down 5n+10 But what would do after that? I know that the equal sign basically cuts it inhalf so that it's two problems.. but I just don't know what to do from that point. Help please? -Allyson
  31. pre-calculus

    solve the the following inequality. write your solution in interval notation. x^3-49x<0 _ (I don't know how to make the sign on my computer)
  32. math multiplying & divding mixed numbers

    An estimate for 8 1/6 . 9 3/4 Simplify your answer. Type a whole number, proper fraction, or mixed number
  33. math multiplying & divding mixed numbers

    An estimate for 8 1/6 . 9 3/4 Simplify your answer. Type a whole number, proper fraction, or mixed number
  34. Chemistry

    A 0,518 g sample of limestone was dissolved and then the calcium was precipitated as calcium oxalate ( CaC2O4). Afer filtrating the precipitate, it was needed 40,0 ml of KMnO4 0,250 N acidified with H2SO4 to titrate it. ¿ What is the %w of CaO in the
  35. fundamentals of programming

    The ACME Company has approached you with a request to develop the psuedocode that will control the operations of their new series of vending machines. The program will be required to maintain the product inventory and money reservoir. The program should do
  36. math

    Write an algebraic expression that requires each of the following properties of real numbers to simplify, in the order given: the Distributive Property, the Associative Property of Addition, the Commutative Property of Addition, and the Distributive
  37. Algebra

    1. Why does the inequality sign change when both sides of the inequality are multiplied or divided by a negative number? Does this happen with equations? Why or why not? 2. Write an inequality for your classmates to solve. In your inequality, use both the
  38. Algebra

    1. Why does the inequality sign change when both sides of the inequality are multiplied or divided by a negative number? Does this happen with equations? Why or why not? 2. Write an inequality for your classmates to solve. In your inequality, use both the
  39. Chemistry

    Calculate the standard reaction Gibbs free energy for the following cell reactions: a.)3Cr3+(aq) + Bi(s)= 3Cr2+(aq) + Bi3+(aq) with Ecell=-.61V b.)Mg(s) + 2H20(l)=Mg2+(aq)+H2(g)+2OH-(aq) with Ecell=2.36 V I know the formula. I just need help figuring out n
  40. English

    1.I'm worried about my looks. I want to become more handsome. What should I do? - Why don¡¯t use organic cosmetics on your face? - Why don¡¯t put organic cosmetics on your face? - Why don¡¯t you wash your face more often? - Why don¡¯t you have
  41. CHEM!

    Well I almost understand this question but still got stuck, I will show you the question and my answer so I need someone to tell me if I did it correctly or not and how I should fix it. at 55degrees the K for the reaction: 2NO2(g)<=>N2O4 is 1.15 calc
  42. Math

    Find two number whose product is a 1-digit number and the sum is a 2-digit number.
  43. math

    the product of a 1 digit number and a 2-digit number number is 284 what is the answer
  44. Algebra 1 Honors

    When two numbers are added together, the result is 45. Twice the greater number is six more than five times the lesser number. What are the numbers? 3 months ago Only allowed to use one variable
  45. Urgent Language Arts~!

    10. In the following sentence, "Abraham Lincoln was a widely admired politician,” which statement is correct? (1 point) Add a hyphen between widely and admired. Add a hyphen between admired and politician. Add a hyphen between Lincoln and was. No hyphen
  46. MATHS

    Problem 1. [24 points] Translate the following sentences from English to predicate logic. The domain that you are working over is X, the set of people. You may use the functions S(x), meaning that “x has been a student of 6.042,” A(x), meaning that
  47. Math

    The difference between two numbers is 21. If twice the smaller number is added to one-half of the larger number, the result is 38. What are the numbers?
  48. Math

    The sum of two numbers is 70. When the smaller number is subtracted from the bigger number, the result is 24. Find the numbers.
  49. Algebra

    Seven times the difference of six and a twice a number yields the same result as the same number decreased by one. How does this translate into an algebra statement?
  50. math

    Rachael is thinking of a number. She adds 7, multiples by 3, subtracts5, and divides by 2. The result is 29. What is Rachael's number?
  51. begining algebra

    translate into a variable expression.then simplify the expression.the sum of a number y divided by four and the number.
  52. math

    The sum of the digits of a two-digit number is 14. If the numbers are reversed, the new number is 18 less than the original number. Find the original number. I know Ana asked this question, but i don't understand how to get the equations.
  53. guidance

    Which one of the following statements by a caregiver reflects a positive and clear approach to communicating with a child? A. "We don't play with knives." B. "Look at the mess you made at your place." C. "Put this napkin under your sticky bun." D. "Nice
  54. Math

    How could you use the product 108 and 4 to find the product of 324 and 4? How would I know that you need to multiply times 3. How are the children given directions to work on this problem. I know understand 108 goes into 324 3 times. But are they asked to
  55. chemistry

    A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what
  56. math

    Show that if x is a nonzero column vector in R^n, then the nxn matrix: A = I - 2/||x||^2 * xx^T is orthogonal. Notation key: ||x|| = norm of x x^T = transpose of x I = identity matrix. Let me try to convince a math student to use "physics" notations that
  57. MATH 2B Calculus

    Consider the area between the graphs x+4y=14 and x+7=y^2. This area can be computed in two different ways using integrals. First of all it can be computed as a sum of two integrals They ask to use two integrals so i put f(x) from -7 to 2 which is correct
  58. MATH

    11.) A company produces a product for which the variable cost is $12.30 per unit and the fixed costs are $98,000. The product sells for $17.98. Let x be the number of units produced and sold. a.) the total cost for a business is th sum of the variable cost
  59. Algebra

    Solve by using the quadratic formula x^2=-7x+12 First, put all the terms on one side. x^2=-7x+12 x^2 + 7x -12 = 0 If the original sign for the 12 were negative, this would lead you to: x^2 + 7x + 12 = 0 This could factor into: (x+3)(x+4) = 0 However, as
  60. Chemistry-Acids

    Write a balanced chemical equation to show the reaction that occurs when each weak acid reacts with water. (Omit states-of-matter from your answer. Use the lowest possible whole number coefficients.) (b) HCHO2 I've gotten a and c correct, and from that I
  61. Math (Trigenometry)

    Find two positve real numbers whose product is a maximum and whose sum of the first number and four times the second number is 120. This is as far as I've gotten in solving it. *first number is x. *second number is y. *xy=maximum, which is unknown.
  62. maths

    A Two digit number is such that the product of the digit is 18. When 63 subtracted from the number the digit interchange the place.Find the number.
  63. English

    Jack: I'll be there in 20 minutes. I'm stopping at the store to pick up some batteries. Do you need anything Which of the following statements about Jack's dialog is true? 1. All three sentences use future form and meaning 2.All three sentences use present
  64. Math

    Perry's Publishing is relocating and 2 employees, Edna and Sam have created a "For sale" sign 4 feet long to place outside the current premises. They plant o attach the sign to a 9-foot pole using a hook and a chain. They would like the top of the sign to
  65. college finite math

    A product may be made using Machine I or Machine II. The manufacturer estimates that the monthly fixed costs of using Machine I are $17,000, whereas the monthly fixed costs of using Machine II are $14,000. The variable costs of manufacturing 1 unit of the
  66. math/115

    One kilometer is equal to 1,000 meters. What fractional part of a kilometer is 700 meters? Simplify your result.
  67. ELA

      An antonym is a word that's  A. defined in a thesaurus. B. opposite in meaning. C. pronounced the same. D. the same in meaning. B?
  68. Math

    I add 12 to a number and then double their sum, the result is 1½ of what I get when I double the original number and add 12. Find the number.
  69. WILL SOMEONE PLEASE HELP ME!!!!!!!!!

    A cross between true breeding tall red flowered plants and true breeding short white flowered plants. Tall and red are dominant traits. What would be the expected ratios of phenotypes in the f1 and f2 generations? what is the exoected ohenityouc ratui if
  70. Physics

    [Young & Freedman, 3-12] A military airplane on a routine training mission is flying horizontally (in the positive x-direction) at a speed of 120. m/s and accidently drops a bomb (fortunately not armed) at an elevation of 2090 m. Air resistance may be
  71. Engineering

    A perfect coin should produce heads and tails with equal probability. If we assign the number 0 toheads and the number 1 to tails, then we can mimic such a perfect coin in Matlab. Specifically, we cangenerate N “coin flips” in Matlab by doing x=
  72. maths!

    6) There are three research and development projects focusing on the development of three new products A, B and C. The markets into which the new products are to be launched are identical. However, consumer preference is at present, unknown. A probability
  73. calculus

    This was a multiple choice question asking which of the following is an equation of the line tangent to the graph of f(x)=x^4+2x^2 at the point where f'(x)=1? and the answer is y=x-0.122, but I don't understand why. I tried to take the derivative of f(x)
  74. English

    1. I'll get you Mr. Smith. 2. I'll put you through to Mr. Smith. 3. I'll connect you to Mr. smith. 4. I'll transfer your call to Mr. Smith. (Are they grammatical and similar in meaning?)
  75. 5th grade

    I need a little help on this worksheet I got... I have an answer but I'm not sure if it is correct. ALGEBRA--- Translate each verbal expression into an algebraic expression. Then, simplify the expression. 1. Two sets of the sum of a number and eight are
  76. Calculus

    I have to get the result of the serie from 1 to infinite of |sin(4n/π) +3|/ 4^n I really don't know what to do... Please I would really appreciate if anyone can help me
  77. Computer class

    how do I design a program using a flowchart, the program needs to compute state and county sales tax? It is suppose to compute it once the user enters amount of purchase
  78. CHEM!

    Okay well I suddenly got confused for a lab I did We took pH meter than we calibrate it. Then we measure the pH of the acetic acid solution, which was used to determine the Ka of the acetic acid using the first method. We made a 1M solution of NaOH which
  79. English

    {At a restaursant} For hear or to go? Is this for here or to go? It's for here, please. It is to go, please. (Are the expressions above all grammatical? What is the meaning of 'is to' in 'It is to go, please.'? Does it mean 'must'? That is, "It (the food)
  80. English

    It is a small world. (What is the meaning of this sentence? When do we use this expression? And what does "It" refer to? What is the meaning/use of "It"?)
  81. physics

    You are asked to hang a uniform beam and sign using a cable that has a breaking strength of 372 N. The store owner desires that it hang out over the sidewalk as shown. The sign has a weight of 248 N and the beam's weight is 49 N. The beam's length is 1.30
  82. algebra

    I need to simplify (6x^2y^3)(9x^2y^3)/3x^2y^2. I don't know whether I'm supposed to multiply or divide or both?
  83. math exam prep question

    Simplify: 1/4a+2 + 4/6a+3 I got 14/6(2a+1) but I don't think it is right
  84. math exam prep question

    Simplify: 1/4a+2 + 4/6a+3 I got 14/6(2a+1) but I don't think it is right
  85. algebra

    can you tell me the process of how to simply problems like this so i don't have to keep asking? simplify: (2x^2y)(-5x^-5y^6) (5y)^3
  86. algebra 1

    √625x^4z^8y^2 I don't need to solve it, just simplify it Thanks
  87. Algebra 1

    Simplify each expression. 1. 2x + 10/x+5 2.x^2 - 25/3x - 15 3. x^2 + 4x/x^2 - 9x 4. n^2 + 7n + 10/ n^2 + 2n - 15 Please explain how to do these I don't understand!
  88. Math

    Simplify the expression 6P3. I don't know how to solve it so if you could help me with it as well i would really appreciate it.
  89. math 1 question

    Simplify the following expression: 5^2 - 4 / 5 +2 is it 3 or 26.2, i don't know which one, im confused.
  90. Pre Calculus

    Simplify 2(3-i^14)- (5-i^23) 3-i Simplify: (5-3i)^2 16+30i Simplify (3+2i) / (4-5i) (2/41)-(23/41)i is this right?
  91. Math

    Why does the inequality sign change when both sides are multiplied or divided by a negative number?
  92. algebra

    Why does the inequality sign change when both sides ar multiplied or divided by a negative number?
  93. Algebra

    Why does the inequality sign change when both sides are multiplied or divided a negative number?
  94. algebra

    why does the inequality sign change when both sides are multiplied or divided by a negative number?
  95. Simplifly variable Expressions

    I need help on justify each step. 5(n+4)+9n=(5+20)+9n =5n+(20+9n) =5n+(9n+20) =(5n+9n)+20 =(5+9)n+20 =14n+20 PLease and Thank-You 5(n+4)+9n =(5n+20)+9n distribution =5n+(20+9n) addition =5n+(9n+20) addition =(5n+9n)+20 addition =(5+9)n+20 factoring =14n+20
  96. University South Carolina

    A movie theater has fixed costs of dollar-sign 9000 per day and variable costs averaging dollar-sign 3 per customer. The theater charges dollar-sign 12 per ticket. How many customers per day does the theater need in order to make a profit? Give the
  97. math (vectors) & physics

    Posted by sam on Wednesday, March 28, 2007 at 7:32pm. In unit-vector notation, what is the net torque about the origin on a flea located at coordinates (-2.0, 4.0 m, -1.0 m) when forces F1 = (-4.0 N) k and F2 = (-5.0 N) j act on the flea?
  98. Algebra

    I'm having trouble with inequalities. Basically my problem is about which way the sign goes. Here's an example.. X(X+1)>2 so then it becomes X^2 + X>2 Correct? Then X^2 + X - 2>0 then factor so it becomes (X+2)(X-1)>0 And so I end up with
  99. MATH

    Reiny (Previous problem) better form would be to place the equal sign in front of each new line You also have errors -3(x + 3)- 2(x + 4) = -3x - 9 - 2x - 8 = -3x - 2x - 9 - 8 = -5x - 17 So -3 x 3 made -9. how did the 2 become negative, I thought it was a
  100. Physics 101

    A uniform sign is supported at P as shown in the figure. If the sign is a square 0.8 m on its side and its mass is 10 kg, what is the magnitude of the horizontal force that P experiences? ANSWER: 25 N 49 N 98 N 0 N