Sara

Newest questions posted by Sara
  1. math

    The factors of X^4-13x^2+36 when factored completely are I did x^2(x^2-4)(x^2-9) (X+3)(x-3)(x+2)(x-2) it was multiple choice 1. (x^2+9)(x^2+4) 2. (x^2+9) (x+2)(x-2) 3. (X+3)(x-3)(x+2)(x-2) 4. (x+3)(x+3)(x+2)(x+2) my answer is choice 3. Thanks for checking
  2. math

    In order to successfully perform a trick, a flying trapeze artist must swing along a parabolic path that is equidistant from the floor and the pivot point where the trapeze rope is attached. The rope is attached at the ceiling 8 feet above her starting
  3. math

    The expression X^2(x+3)-9(x+3) is equivalent to (x+3)^n(x-3) when n equals? I got an answer of 2 I did X^2(x+3)-9(x+3) (x+3)^n(x-3) 4(5)-9(5)=-25 -25=(5)^n(-1) n=2 Is this correct? Thank you for checking my work
  4. Chemistry

    Restart the PhET simulation and set it up in the following manner: select Oscillate, select No End, and use the parameters in parentheses by sliding the bars for Amplitude (1.00 cm), Frequency (1.20 Hz ), Damping (none), and tension (highest). Using the
  5. math

    If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps
  6. Math- algebra 2

    If Y=(X) has a range of [3,18], what is the range of Y =1/3f(x-2)-4? I took the first 3-4=-1 Then the 18-4=14 R[-1,14] But I got it wrong so can you please explain the steps
  7. linear algebra

    Let T be the plane 2x−3y = −2. Find the shortest distance d from the point P0=(−1, −2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I need help with this
  8. linear algebra

    Let T be the plane −x+2y = 4. Find the shortest distance d from the point P0=(2, 2, 1) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. I know I have posted this many
  9. linear algebra

    Let L be the line passing through the point P=(−3, −1, −5) with direction vector →d=[4, 0, 4]T, and let T be the plane defined by 4x−y−3z = 16. Find the point Q where L and T intersect. please help..
  10. Linear Algebra

    Let T be the plane −y+2z = −8. Find the shortest distance d from the point P0=(−5, 4, 2) to T, and the point Q in T that is closest to P0. Use the square root symbol '√' where needed to give an exact value for your answer. d = 0 Q = (0, 0, 0)
  11. Math

    A rectangular plot of land that has an area of 1200 sq. ft, will hold a rectangular garden whose length is 8' more than twice the width, and will be bordered by a 3' wide sidewalk for pedestrians. Write a function that describes the area of the garden with
  12. social studies

    What is the Babylonian King Hammurabi most remembered for today? A. his code of law B. his great wealth C. his military conquests D. his public works projects
  13. English

    Hello, is this sentence grammatically correct? The lecturer explained to us how greenhouse gases come about, and we soon wondered what we could do to forestall disaster.
  14. chemistry

    what is the number of molecules of c2h6o required to have 135 atoms in total?
  15. english-sentence

    is this sentence correct? I have a loving two year old son, whom can sometimes be a handful.
  16. math

    Two cars are side by side. One is 3.9 meters long. The other is 6% shorter. How long is the second car? I know the answer is 3.7, but how?
  17. Organic Chem

    what is the pka of anhydride? i've searched the whole web and can't seem to find the pka of the functional group.
  18. Chemistry

    Calculate molarity 9.8g r 500 ml
  19. Calculus

    Consider the functions A(x, y) = x^2y + xy − 3xy^2, and B(x, y) = xe^xy − y. (a) Calculate the x derivative of A, or Ax. (b) Calculate the y derivative of A, or Ay. (c) Calculate the x derivative of B, or Bx. (d) Calculate the y derivative of B, or By.
  20. math

    Christina finances a piano for $3,070 by taking out an installment loan for 24 months. The payments were $153.50 per month and the total finance charge was $614. After 14 months, Christina decided to pay off the loan. After calculating the finance charge
  21. math

    Scott purchases a piano costing $2,630 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 5 years. How much are Scott's monthly payments?
  22. math

    You purchase a hot tub costing $4,600 by taking out a 13% add-on interest installment loan. The loan requires a 15% down payment and equal monthly payments for 4 years. How much are your monthly payments?
  23. Math

    Given that g is the inverse function of f, and f (3) = 4 , and f ′(3) =5 , then g′(4) = -1/5 -3/5 3/5
  24. physics

    Determine the x and y components of the following three vectors in the xy plane. 1) A 19-m/s velocity vector that makes an angle of 40° counterclockwise from the -x direction. x: 2) y: Explain please!
  25. Chemistry

    hydrobromic acid (50.5) calculate the concentration in mol/L. (MW HBr: 80.91 g/mol, density: 1.49 g/mL)
  26. Computer science C++

    3. After following statements have executed, find the value of the variable a. int a=5; while (a
  27. Math

    Jason was hired to mow a lawn that covers an area of 2 3/4 acres it took him 4 1/8 hours to complete the job what was his unit rate and hours per acre you multiply the numerator and a complex fraction by the reciprocal of the denominator to calculate our
  28. math

    An object is dropped from a balloon 3600 feet above the ground. Find the time it takes to reach the ground if the height of the object is given by the equation h(t) = –16t^2 + 3600
  29. Math

    The length of a rectangle is three times as long as its width. Its area is 675 square feet. a. Write an equation that demonstrates the given information. b. Find the dimensions of the rectangle.
  30. history

    Which of the following best applies to religion in the High Middle Ages? 1. Pilgrimages to holy shrines declined as the practice of indulgences increased 2. The Bible was translated and widely read in the vernacular (every day, spoken) languages 3. The
  31. math

    Determine whether ∆QRS is a right triangle for the given vertices. Explain. Q(18, 13), R(17, –3), S(–18, 12)
  32. History

    1. In the Lindisfarne Gospels, what symbol represents St. Mark? (The Winged lion?) 2. In the Lindisfarne Gospels, who is the only evangelist who is pictured facing the reader directly? (I think its John) 3.In the Book of Kells, how many evangelists are
  33. math

    Determine whether ΔGHI is a right triangle. G(-2, 1), H(3, -1), I(-4, -4). Can you please show the steps too? Thank you!
  34. history

    Which European country was controlled by Muslims throughout the Middle Ages, and what year did Christian rulers finally take power away from the Muslims?
  35. math

    The vertices of a triangle are L(1,3), M(4,0), N(-4,1) LO is a median of the triangle. What are the coordinates of point O? Explain.
  36. math

    The value of Sara's new car decreases at a rate of 8% each year. 1.Write an exponential function to model the decrease in the car's value each month. 2.Write an exponential function to model the decrease in the car's value each week. 3.Write an exponential
  37. English

    How to re-word this please? The Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016 will be considered by the House on Wednesday, December 7. under the rules. S. 2854 was proposed on April 26, 2016, by Senator. Richard Burr Republican of
  38. English

    How can I re-word this to start my summary ? On Wednesday, December 7, 2016, the House will consider S. 2854, the Emmett Till Unsolved Civil Rights Crimes Reauthorization Act of 2016, under suspension of the rules. S. 2854 was introduced on April 26, 2016,
  39. Math

    Give the domain and range of the following functions: f(x) = 1⁄4x – 7 g(x) = 3x2+ 2
  40. math

    -2/5x-9
  41. Exponential and Logarithmic functions

    A certain material decays at a rate of 1.9% per year. The sample is 260 grams. How much will be left in 11 years? How long will it take to have only a 100g sample left?
  42. Opreating System

    Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes
  43. Opreating System

    Hi, i need help with this opreating system homework. Part 1: you need your C program to do the following in order to achieve this desired output. (1) navigate the subfolders of the proc folder looking for those folders holding information about processes
  44. Math

    For the following geometric sequence find the recursive formula and the 5th term in the sequence. In your final answer, include all of your work. {-4, 12, -36, ...}
  45. Biology

    What is a protein that transports ions across the plasma membrane without requiring energy or changing shape?
  46. psychology

    does someone know a good website that includes b.f. skinner in behavioral approach ,or just inform about him?
  47. MATH

    A prism has a cross section that is a right angled triangle.its volume is 60 cm^3.What could the dimensions of prism be?
  48. maths

    Aprism has a cross section that is a right angled triangle.Its volume is 6 cm^3.What could the dimentions of this prism be ? .....cmby..........cmby.....cm(2)
  49. Physics

    an object of mass m is being weighed in an elevator that is moving upward with an acceleration a. What is the eesult if the weighing is done using a spring balance and a pan balance?
  50. Math

    How would I go about solving y - 6 is greater than or equal to = 12?
  51. Math

    y + 5 is equal to or greater than 7 Is y less than or greater than 12? Please check, and help correct.
  52. Math

    x/4 + 1 = -6 I'm not sure the process to solve the equation, could I have help?
  53. physics

    If 335 g of water at 65.5 °C loses 9750 J of heat, what is the final temperature of the water? Liquid water has a specific heat of 4.18 J/(g.°C). °C (Answer a number only, no units. Round to the tenth place). This is an example of an endothermic or
  54. algerbra

    can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the
  55. algerbra

    can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the
  56. math

    The question is: the table below lists the total cost for parking for a period of time on the street in NYC. The total cost for any time up to and including the hours parked. For example, parking up to and including 1 hour would cost $1.25; for 3.5 hours
  57. Algebra

    I have a few of these questions that I need help on, please help me! 1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x 2. 2x^2 + 8 8 - 4x + 3x - 6x^2 + 7 3. 2x^2 = 6x - 7x +8 - 3x^2 + 1 5. (m^2 - m - 4) + (m - 5) 6. (5x^2 + x - 3) - (-2x^3 + 4) 9. 64^10/64^5 10.
  58. math

    On the set of axes below, graph the function represented by y=cubed root of x-2 for the domain -6< or equal to x< or equal to 10. x column I did -6, 1, 2 , 3 ,10 y column I did -2, -1, 0, 1, 2 Then I plotted these points. Is this correct? Thanks for
  59. Math

    An employee earns $200 for 14 hours work. Assuming he is paid by the hour, how much will this employee earn in 35 hours?
  60. math

    my watch is twelve minutes slow .the bus for which I am waiting should have arrived at 3.49pm but it is five minutes late. What time would my watch show when the bus arrives?
  61. geometry

    Find the lateral area of a regular square pyramid whose slant height is 20 and whose base has an edge length of 7
  62. statistics

    Recent studies, as summarized, for example, in E. Mortensen et al. (2002). The association between duration of breastfeeding and adult intelligence. Journal of the American Medical Ass o ciation , 287 , 2365–2371, suggest that breast-feeding of infants
  63. Math

    If
  64. Math

    If
  65. statistics

    The professor teaching a large introductory class gives a final exam that has alternate forms, A, B, and C. A student taking the exam using Form B is upset because she claims that Form B is much harder than Forms A and C. Discuss how percentile point data
  66. math

    This is a multiple choice question. What is the solution of the equation 2(x+2)^2-4=28 1)2 only 2)6 only 3)-2 and 6 4)2 and -6 I did (2x+4)(2x+4)-4=28 4x^2+8x+8x+16-4=28 4x^2+16x+12=28 4x^2+16x=16 This is where I get stuck, can you help? thank you
  67. math

    The equation d=0.12v^2 + 2.1v models the distance d in feet it takes a car traveling at a speed of v miles per hour to come to a complete stop. Graces car was able to stop after 350ft on a highway. If the speed limit in the area was 35 miles per hour, was
  68. Math

    Michael can travel at 166.35mph in his Ferrari. How far can he travel in 5 hours?
  69. Math

    Colin lived in Scotland and was going to take his caravan on holiday to France. On the first day he travelled 472.87 miles to Portsmouth. He got a ferry which travelled 73.92 miles. He then got off the ferry and drove 134.56 miles to the camp site. How far
  70. 9th grade English

    Sam had to mix __________ parts of the two chemicals for the experiment. a. equaled b. equitably c. equal d. equate f. equation I pick C This seems to easy am I missing something?
  71. Story section

    Imagine you are an old ragged doll.You have just been thrown away by your owner.Tell the story of what happens to you. Please at least write 4 or 5 sentences to make a start Thank you
  72. Logic

    Which of the following is not like the others? A. 1 B. 22 C. -2 D. 50 E. -94
  73. Logic

    Which of the following is not like the others? A. Mars B. Venus C. Asparagus D. Potatoes E. Computers F. Cheeses G. Chairs H. Pasta
  74. Maths

    A boy spends 1/4 of his money on sweets and 1/3 on computer games. What fraction of his money does he not spend?
  75. Trigonometry

    The first three terms of an arithmetic progression are 1/2, x, 25. The first three terms of a geometric progression are x+1/4, 32 1/2, and y, where x and y are positive numbers. Find the value of X and the value of Y.
  76. MATH

    Jenny is running an experiment for organic chemistry class. She needs exactly 100 ml of 70% hydrochloric acid, but the lab only has 90% and 40% solutions. How much of each solutions does she need to mix in order to obtain 100 ml of 70% hydrochloric acid
  77. Math

    What is 7 to the nearest hundred?
  78. MATH!!

    There are two numbers whose sum is 50. Three times the first is 5 more than twice the second. What are the numbers?
  79. math

    15(5^x-2)=8^2x+1 extraneous root sorry for the re post, i typed it wrong
  80. math

    given f(x) = x^2 and g(x)= squar root x+4. determine the following compostions and their doamin and range a) f(g(x)) b) g-1(superscript) (f(x)) c) g(f(x)) +g-1(superscript)(f(x))
  81. math

    log(subscript)2 (x+5) + log(subscript)2 (x-1) =4 find the extraneous root
  82. math

    The pH or acidity of liquid is measured in pH, where pH is given by the equation pH=- log C, with C being the concentration of [H+] in multiples of M=1mol/L. Suppose you are given a solution of hydrochloric acid with a pH of 1.7 and asked to increase the
  83. math

    15(5x-2)=82x+1 solve the extraneous root
  84. math

    A polynomial function function is defined by the equation p(x)=3x3+ax2+bx+7, where a, bE/. If p(-2)=5 and p(1)=14 then the value of a+b is...
  85. Advanced Functions

    4cos2x - cosx-3 =0 0 to 2pi
  86. chemistry

    The pH or acidity of liquid is measured in pH, where pH is given by the equation pH=- log C, with C being the concentration of [H+] in multiples of M=1mol/L. Suppose you are given a solution of hydrochloric acid with a pH of 1.7 and asked to increase the
  87. Advanced Functions

    the compound interst forumla is A= P(1+i)^n. consider the function in the form of y= 100(1+x/2)^20, where y is the compound amount. a) determine the required annual interest rate of investment to the nearest tenth of a percentage of 10 years that will give
  88. statistics

    the percentage increase in price of four items from what they did a year earlier is 72,108,36 and 96 what is the average percentage increase in price of the four items
  89. physics

    suppose a car is driven from town A to town B from town B to town C and from town C to town D which have equal distances at average speeds 20km/hr,60km/hr and 120km/hr respectively,what is the average speed for the whole journey
  90. Advanced Functions

    assume the function f(x) and its inverse f-1(x) are both defined for xer. give a geometric interpretation of the composite function y=f(f-1(x))
  91. Percentage

    If Safia have 10 percent more cookies than Rohit, how many percent fewer cookies does Rohit have than Safia?
  92. help math!

    Elisabeti bikes from home to the grocery store and back to pick up in- gredients. On the way to the store, she averages 15 mph. Encumbered by groceries, she averages 10 mph on the way back. What is her average speed for the whole hour?
  93. help with math!

    Morwen bikes around his neighborhood for an hour. He averages 15 mph for the first 40 minutes, but then he tires and averages 10 mph for the last 20 minutes. What is is his average speed for the whole hour?
  94. MATH 2

    Elisabeti bikes from home to the grocery store and back to pick up in- gredients. On the way to the store, she averages 15 mph. Encumbered by groceries, she averages 10 mph on the way back. What is her average speed for the whole hour?
  95. MATH

    Morwen bikes around his neighborhood for an hour. He averages 15 mph for the first 40 minutes, but then he tires and averages 10 mph for the last 20 minutes. What is is his average speed for the whole hour?
  96. math

    Find two fractions in lowest terms with unequal denominators whose difference is 2/7?
  97. math

    In one minute, Sasha takes 43 steps. It takes her 301 steps to travel from her house to the shops. If she leaves home at 10:24,at what time will he reach the shops if he walks steadily?
  98. Advanced Functions

    The number of bicycles, n, sold at one store in a week is a function of the price, p, in dollars. So n(p) for p > 80. The store’s cost, c, in dollars for each bike is a function of the number of bikes the store sells each week. So c(n)
  99. math- factoring

    The question is ax^2+bx+c=(2x-7)(x-3) for all values of x, What is the value of b? The teacher went over and said the answer is -13, but I am not sure how she got that. Can you please explain. Thank you! I did the first part (2x-7)(x-3) 2x^2-6x-7x+21
  100. Advanced Functions

    Nadia collected the data in the table on the left using a CBR after a ball was dropped. (a) Enter the data into L1 and L2 using a TI-83 Plus. Graph the relation. (b) Without looking at the graph, how do you know that the relation is not linear? (c) Use

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