1. Math

    Find an equation of the ellipse with its center at the origin. center(0,0) foci(2,0)(-2,0) major axis=8 My answer is x^2/16 + y^2/15 = 1. Is this correct?
  2. Geometry

    Find the measure of the third angle of a triangle given the measure of two angles are 86º and xº. A- 86-x B- 90-x C- 94-x D- 180-x My answer was A. Please correct me if I am wrong. Thank you
  3. Physics

    A moving object has a kinetic energy of 138 J and a momentum of 23.9 kg·m/s. a) Find the speed of the object. Answer in units of m/s.
  4. Algebra

    27-f(x)=1/4x^2-2x-12. Can you show me how to find the vertex and x intercepts, step-by-step? I tried to put it in standard form, with (1/2x-1)^2-13, but my book said that's not the answer. Thanks!
  5. Science

    Hi I've read everything and searched everything and I can't find the answer to this question so... How is iodine-131 and iodine-126 similar and how is it different? Thank you this is stressin me out!
  6. PRE CALCULUS

    find exact values for the number of radians for an arc of 4pi/3 on a unit circle is the answer 4pi/3???
  7. physics

    A moving object has a kinetic energy of 147 J and a momentum of 22.3 kg·m/s. a) Find the speed of the object. Answer in units of m/s
  8. Math

    Find the number of vertices in a polyhedron if it contains 20 triangular faces and 12 pentagonal faces. a. 30 b. 32 c. 60 d. 120 * Also please show me how you got your answer, thanks
  9. Math

    Find the area of the given circle.Round to the nearest tenth. The diameter of the circle is 12 feet. A.11.0 ft^2 B.38.5 ft^2 C. 42.8 ft^2 D. 113.20 ft^2 Is the answer D? Thank you
  10. Physics acceleration

    A car accelerates uniformly from rest to a speed of 91.4 mi/h in 7.68 s. Find the constant acceleration of the car. Answer in units of m/s
  11. physics

    A car accelerates uniformly from rest to a speed of 73.6 mi/h in 7.68 s. Find the constant acceleration of the car. Answer in units of m/s 2
  12. math

    Marna wants to find the values of x for which the funciton below will have a value of 10. f(x) = x^2 + x - 20. Which of the following shows the correct factorization of this funciton for f(x) = 10. A. (x + 5) (x + 4) = 10 B. (x - 5) (x - 4) = 10 C. (x + 6)
  13. math

    Find the monthly payment for the loan. (Round your answer to the nearest cent.) $700 loan for 12 months at 12%
  14. math

    Find the measure of the third angle of a triangle given the measure of two angles are 86º and xº. A. 86-x B. 90-x C. 94-x D. 180-x My answer was A. Please correct me if I am wrong. Thank you
  15. help ?

    Let f(x) = (x − 3)^−2.Find all values of c in (1, 4) such that f(4) − f(1) = f'(c)(4 − 1).(Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)
  16. Math

    Find the missing dimension of the cylinder. Round your answer to the nearest whole number. 1. Volume = 84 in.^3 r = 6 in. h = ? 2. Volume = 650 cm^3 r = 8 cm h = ?
  17. Calculus

    Find all solutions to the equation with 0≤α≤2π. Give an exact answer if possible, otherwise give value(s) of α accurate to at least four decimal places. 4tan(α)+5=2a=
  18. Calculus

    The function defined below satisfies the Mean Value Theorem on the given interval. Find the value of c in the interval (1, 2) where f'(c)=(f(b) - f(a))/(b - a). f(x) = 1.5x-1 + 1.1 , [1, 2] Round your answer to two decimal places.
  19. 5th grade math

    Estimate the quotient. 1.175/18 2. 231/37 My answer is 1. 200/20=10 2. 200/40=5 Did I find the correct estimates for these problems?
  20. Calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = −x and y = x/2 for x in [0, 6]
  21. Calculus

    Lines tangent to the curve y-1=2x^2+3x pass through the point A(2,-1). Find the x-coordinate(s) of the point(s) of tangency. The answer is 2+2^1/2, 2-2^1/2, I just don't know how to get there. Please help! Thank you!
  22. Pre-Calculus

    Sorry to be a pest but I never got an answer and I'm really stuck Can you please check this equation. Find polar equation of x^2 + y^2 = 10y x^2 + y^2 = r^2 r^2 = 10sin(theta)
  23. Physics

    A moving object has a kinetic energy of 138 J and a momentum of 23.9 kg·m/s. a) Find the speed of the object. Answer in units of m/s.
  24. Physics

    A moving object has a kinetic energy of 146 J and a momentum of 23.4 kg·m/s. a) Find the speed of the object. Answer in units of m/s.
  25. math

    find the next time both buses will leave Central Station at the same time. Show or explain how you found your answer.
  26. Algebra

    I have to find the vertex, axis of symmetry, and x intercepts of x^2-x+(5/4). I put it in standard form as -(x+-.5)^2+1.5. Thus, the vertex would be .5, 1.5. But the book's answer is 1/2, 1. How did they get this?
  27. Maths

    Find the largest integer S which is a divisor of n^5−17n^3+16n for every integer n≥4. Tried it for a number of times. Please answer if you know how to solve it.
  28. math

    my question in (slope) find the coordinates of the vertices of a triangle so that the slope of all three sides are positive ??? please explain your answer .
  29. Math

    Find the standard deviation for the given data. Round your answer to one or more decimal places than the original data. 3){15,13,31,42,58,78} A)534.3 B)23.1 C)36.5 D)39.5
  30. pre-cal

    find the equation of a line that is perpendicular to the line y=1/6x+7 and contains the point (-5,0) y= (Type your answer in slope intercept form)
  31. college algebra

    Find equation of each line. write answer in slope intercept form. The line parallel to -3x+2y=9 and contains the point (-2, 1).
  32. Alegebra 2

    Two positive numbers differ by 2. Their reciprocals add to 3. Find the numbers. (keep your answer in simplest radical form)
  33. Chemisrty

    To what volume must 1.0 l of a 6.0 m solution of hcl be diluted in order to prepare a 0.2 m solution? I just need to find wht steps i need to take to get the answer
  34. college maths

    Write as a product of factors; then find the product. (Points: 5) 0 90 675 150 I think the answer is C but im confuse any other opinions please?
  35. math

    Find the nth term of the geometric sequence whose initial term is 7 and common ration is 7. (your answer must be a function of n)
  36. math (geometry)

    A parallelogram has sides 8 and 12. The shorter altitude is 6. Find the length of the other altitude. -------------------------------------------------------------------------------- It says the answer is 9, but I don't know how they got that. Any help is
  37. Psychology

    What is meant by this question: What is the theory underlying ANOVA? I don't understand what the question is asking and cannot find an exact answer.
  38. Algebra

    Find the product of (x^2 - 3x + 5) with the quotient of (10x^6 - 15x^5 - 5x^3) ÷ 5x^3. I need some help with this. I'm really unclear on the steps and how to solve this as a whole. I don't just need an answer, I'd like to know the steps as well. Please?
  39. math

    Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 10) {15, 13, 31, 42, 58, 78} A) 36.5 B) 534.3 C) 39.5 D) 23.1
  40. Algebra

    I need help this this question it is on of the questions on an assesment and i cant get it wrong but i don't know the answer please help! Find the length of the segment MN with endpoint M at 2,-3 and endpoint N at 8,5
  41. Math

    x = 2 , 4 , 6 , 8 y = 18, 34, 50, 66 This is supposed to be a table where the x lines up with the y in order How would I find the equation to solve this when x = 20? x goes up by +2 y goes up by +16 but starts with 18 I already posted this and got the
  42. VB

    To paint a graphic image into a picturebox control, you would use the function _______ i cant find the answer anywhere, but im thinking paint
  43. math

    find the unknown lenght of a rectagular prism. Lenght=15 volume=180 ft square with= 4 ft my answer is x=120
  44. New here

    Hi, I'm in 7th grade and I am new to this site. Could someone please tell me how this site works and also, how do I find out if someone posted an answer to the question I asked? Thank You! Rayne
  45. geometry

    Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a 90 degree triangle and one side is 3 cm
  46. Math/Calculus

    Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please walk me through the
  47. math

    the length of a rectangle is 3cm more than twice the width. the perimeter is 84cm. find the length Please show me the steps on how you get the answer. Thanks
  48. math

    Find the nth term of the geometric sequence whose initial term is 7 and common ration is 7.(Your answer must be a function of n.)
  49. calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = x2 − 4x + 1 and y = −x2 + 4x − 5 for x in [0, 3]
  50. math

    AOD is a diameter of circle O. The coordinates of points A and D are (-11,-5)and (-3,-5)Find the area of circle O. a. 9 pi b. 16 pi c. 25 pi d. 64 pi e. 116 pi please answer and explain
  51. calculus

    Determine whether the sequence converges or diverges. If it converges, find the limit. (If an answer does not exist, enter DNE.) An=[(-1)^n]/[8[(n)^(1/2)]]
  52. Math

    does anyone know how to find the answer to the following questions: An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?
  53. science

    you are sledding on a snow-covered hill at a speed of 6 m/s there is a drop that increases your speed to 12 m/s in 4 s. find your acceleration? i need help answer?
  54. Algebra

    Find the domain of the function. Write in interval notation. sqrt(x^2 − 64). For the answer, I got (-infinity, -8)u(8, infinity), but that's wrong, and I'm not sure what else to try?
  55. algebra

    1. the function f(x)=6x/3x-5 is one to one. find its inverse and check your answer. And on the second one can you tell me if I am correct. 2. solve the following exponential solution 7^2x+7^x+1-60=0 7^2 x+7^x-59=0 (49x)+7^x-59=0 49x/49=0/49 x=0/49 x=0
  56. calculus

    Let f(x) = (x − 3)−2. Find all values of c in (2, 5) such that f(5) − f(2) = f'(c)(5 − 2). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) C=?
  57. Geometry. HELP!!

    The ratio of the measures of an angle to its complement is 3:2. Find the measures of the angles. (don't give me the answer, just tell me the process, thank you).
  58. math

    Write a real-world problem that you could represent with the equation 4x+5=37. Solve the equation to find the answer to your question.
  59. Calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = x^2 − 4x + 1 and y = −x^2 + 4x − 5 for x in [0, 3]
  60. math

    Solve for x and y using elimination ax+by=c bx+ay=c This question has been confusing me for a long time, and I can't seem to find the answer by solving using elimination. Thanks for helping me :)
  61. physics

    Find the coordinate of the center of mass of the bricks shown in the figure.(Figure 1) Express your answer in terms of L. ---L2------> -------------------------------------------> 0 X
  62. Algebra

    Using the equation, y=-2/3x-2, find the equation of the line that is parallel and has the ordered pair (3,3). Write the answer in standard form.
  63. geography

    How many degrees are there between the equator and the southern tip of Greenland? My answer is 60 degrees. Is this correct? Can you also give me a better map to find this on?
  64. Brief Calculus

    Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = −x and y = −x^3 for x in [−1, 1]
  65. math -interest

    Find the monthly payment for the loan. (Round your answer to the nearest cent.) $400 loan for 12 months at 14%
  66. Physics

    Pick whether each statement is true or false. ------------------------------------------- A liquid is more compressible than a gas. -- My Answer: False A fluid can do work on a solid object. -- My Answer: True Both liquids and gasses are fluids. -- My
  67. Pre-Calculus-check answers

    Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an
  68. Pre-Calculus check answers

    Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an
  69. Pre-calculus-check answers

    Describe the linear programming situation for this system of inequalities where you are asked to find the maximum value of f(x,y)=x+y. Answer: an optimal solution 2)Describe the linear programming situation for this system of inequalities: Answer: an
  70. Trig

    I'm confused on how to determine what the end result angles are for a trigonometric identity (I get how to find the value of sin, cos, etc., and I know how to find the reference angle. I just don't know how to determine further angles from there). For
  71. Algebra I

    Question:The number of students on the football team is two more than three times the number of students on the basketball team. If the basketball team has Y students, write a variable expression for the number of students on the football team. a)3y b)3y-2
  72. science

    An airplane pilot sets a compass course due west and maintains an airspeed of 225km/h . After flying for a time of 0.520h , she finds herself over a town a distance 122km west and a distance 15km south of her starting point. Part A Find the magnitude of
  73. Math

    Find the difference: 3-(-9) A. -12 B. -6 C. 6 D. 12 I got the answer on (D)12 but I am not 100% sure becuase they ask the difference, not the sum.
  74. Math

    I need to find the vertical horizontal asypmtotes for x^2-4/x^2-9. For the answer I got x=3 and nor horizontal asymptote. Is this right?
  75. Precalculus

    Please help!!!!!!!!!!! Find all solutions in the interval [0,2π). 7. 2 sin^2x=sin x Please answer asap
  76. Math

    Find the amount of the tip on a 75$ bill if a 15% tip is left. A. 11.25 B. 11.20 C. 10.50 (my answer) D. 12.00
  77. geometry circle

    A 16 cm by 12 cm rectangle is inscribed in a circle.. find the radius of the circle. ~answer
  78. Math/Please HELP!!

    Find the vertex for f(X)=-x^2+8x+6 My answer is (4,22)Is it correct? If I am correct then what is the line of symmetry?
  79. Math

    Find 9.62 x 1.005. Can you please show me step by step because I keep getting the wrong answer. Thanks.
  80. math

    If y= (x^2+20)/(x-4) Find all critical Numbers. After get f' i got the answer -5/4. What did i do wrong or is that the critical number?
  81. Math

    Two numbers have a sum of 32. One of the numbers is t. Find the other number. My answer is: 32-t. Is this correct?
  82. Math

    The sum of two numbers is 44. The second number is 5 more than twice the first. Find the numbers. x+y=44 2x+5y Is this correct? So the answer would be 3x + 6y=44?
  83. Math

    Find the probability whose odds against are given in the problem. Odds against are 5 to 7. Answer is ________.
  84. linear analysis

    how do i solve for y(x) if dy/dx=x+y and y(0)=1 I know the answer is y(x)=2e^x-x-1 I posted this question before but i can't find my question so i would appreciate if you helped me again.
  85. arithmetic

    mark the correct answer. find 60% of 180 a) 90 b)180 c)130 d)60
  86. Algebra2

    Use the graph of y=sin2theta to find the value of sin 2 theta for theta=pi/4. a--1 b-0 c-0.5 d-1 my answer is -1
  87. geometry

    check my answer please!! find the image of o(-2 -1) after two reflections, first across the line y=-5, and then across the line x=1. (-2,-1) (-1,-6)# (4,-9) (1,-5)
  88. Math

    Please help!!!!!!!!!!! Find all solutions in the interval [0,2π). 7. 2 sin^2x=sin x Please answer asap
  89. english

    I don't mind (speak/speaking/to speak) to him. find the right answer?
  90. algebra

    find the slope of a line that is parallel to the line containing the points (3,4) and (2,6) A.) m=1 B.) m=2 C.)-2 D.) m=1/2 I think the answer is d
  91. math!!

    Find the value of x. x / x+5 = x-4 / x the book says the answer is 20, but im not getting that. I crossed multiplied and got x^2=(x+5)(x+4) and then multiplied that out x^2 = x^2 + 9x+ 20 and then 9x=20.. what am I doing wrong?
  92. Calculus

    How do you find the derivative of (x-2)^.5 times (2x+1) times (x-3)^-.666666667? What is the final answer as well?
  93. Calculus

    If y= (x^2+20)/(x-4) Find all critical Numbers. After get f' i got the answer -5/4. What did i do wrong or is that the critical number?
  94. Percentage Problems

    Find 1/2 of 1% of 190. 190 x .01 = 1.9 1.9/2 = .95 This is what I have been doing. However, the answer is 19/20 and there isn't any explantion. Can anyone help me out with this? Thank you in advanced
  95. Math

    Solve the inequality: 2x-1 / 3x-2 < 1 [the < is actually less than or equal to] I got one of the answers, x is less than or equal to 1, but there's another. How do you find that answer? Thanks
  96. Math

    Find all positive values for k x^2 + 2x- k how do you figure this out factor it out and only use the positive answer
  97. Geometry (Please check my work)

    Find the image of O (-2,-1) after two reflections, first across the line y=-5, and then across the line x=1. I believe the answer should be (-1,-6) Can someone please confirm?
  98. Math

    Unit Rates.. But trying to find the unit cost.. $2.00/64 $7.50/256 My answer for the first one is 32. Not sure about the second one .
  99. Algebra

    The difference of two numbers is 96 and their sum is 300. Find the numbers. What is the answer for that?
  100. Calculus

    Find the derivative. d/dx[sqrt of x (x^3 +1)] My answer in its most simplified form: (7x^3 + 1)/ 2 • sqrt of x