1. Geometry

    I have two questions... #1 if the radius of the two areas is 12in find the length of a chord of an arc of 45, 35, and 60 degrees. #2 the bases of a trapezoid are 30in and 9in and the nonparallel sides are 10in and 17in. Find the area.
  2. PHYSICS

    Find the force on a proton, with kinetic energy 10keV, that is moving perpendicular to a magnetic field of magnitude 2.0kG. I know I need to find the velocity, and then use F=qvBsinTHETA, but I'm so bad at equating different parts of formulas. Can anyone
  3. physics

    Part 1 In the 1950’s, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that produced a thrust of 4.37 × 10^5N for a distance of 465 m. Find the work done on the train. Answer in units of J. Part 2 Find
  4. Math (Quadractic function)

    Hi can you help me find the solution for this one? I have the answers at the end but I want to study how did it end with that. Thanks :) The number N of bacteria in a refrigerated food is given by N(T) = 10T^2 - 20T + 600, 1 ≤ T ≤ 20 where T is
  5. Math

    If 3000 dollars is invested in a bank account at an interest rate of 6 per cent per year, find the amount in the bank after 12 years if interest is compounded annually Find the amount in the bank after 12 years if interest is compounded quaterly Find the
  6. PHYSICS

    A catapult launches a rocket at an angle of 56.9° above the horizontal with an initial speed of 100 m/s. The rocket engine immediately starts a burn, and for 3.25 s the rocket moves along its initial line of motion with an acceleration of 28.1 m/s2. Then
  7. Statistics

    A box contains 12 lights bulbs, of which 4 are defective. All bulbs look alike and have equal chance of being chosen. 3 light bulbs are selected from the box to check the quality. a. List all the possible outcomes b. find the probability that all 3 are
  8. physics

    A force of magnitude Fx acting in the x-direction on a 2.50-kg particle varies in time as shown in the figure below. (a) Find the impulse of the force. (b) Find the final velocity of the particle if it is initially at rest (c) Find the final velocity of
  9. physics

    A block of mass m=.75kg is fastened to an unstrained horizontal springwhose spring constant is 82 N/m. The block is given a displacement of +.12m, where + sign indicates that the displacement is along the +x axis, and then released from rest. Find the
  10. Calculus

    The function y=Asin (sqrt(k/m)t) represents the oscillations of a mass m at the end of a spring. The constant k measures the stiffness of the spring. 1. Find the first positive time time t1 at which the mass is farthest from its equilibrium position:
  11. math

    Hi, I was working on my math homework and I was stumbling on these problems. I wanted to double check my answers that I have; I also could not answer 5. If vectors O(0,0,0), A(6,0,0), B(6,-sqrt(24), sqrt(12)), and C(0,-sqrt(24), sqrt(12)) form a square. 1)
  12. physics

    A 4.90 kg particle moves along the x axis. Its position varies with time according to x = t + 3.4t3, where x is in meters and t is in seconds. (a) Find the kinetic energy at any time t. (Accurately round any coefficient to exactly two decimal places. Use t
  13. Physics

    From the edge of the rooftop of a building, a boy throws a stone at an angle 24.0° above the horizontal. The stone hits the ground 4.40 s later, 104 m away from the base of the building. (Ignore air resistance.) Find the initial velocity of the stone and
  14. stats

    Between 11 P.M. and midnight on Thursday night, Mystery Pizza gets an average of 5.7 telephone orders per hour. a) Find the probability that at least 32 minutes will elapse before the next telephone order. b) Find the probability that less than 17 minutes
  15. Algebra

    Were doing factoring and i don't get these (^ means squared) 1) m^-3m-2 2) 6c^-5c-4 3) ab+mn+an+mb 4) The length of a rectangular garden is 5ft more than the width. The garden has a 3ft wide cement walk sorrounding it. The total area of the garden and the
  16. Math

    A man buys a house for $350,000. He makes a $150,000 down payment and amortizes the rest of the purchase price with semiannual payments over the next 7 years. The interest rate on the debt is 13%, compounded semiannually. (a) Find the size of each payment.
  17. Physics

    If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced a distance 0.130 m from its equilibrium position and released with zero initial speed. Then after a time 0.803 s
  18. physics

    One end of a cord is fixed and a small 0.610 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m as shown in the figure below. When θ = 18.0°, the speed of the object is 4.50 m/s. At this
  19. Chemistry

    If 8.5g of pure ammonium phosphate , (NH4)3PO4(s), is dissolved in distilled water to make 400mL of solution, what are the concentrations (in moles per litre) of ions in the solution. How would I solve this type of stoichiometric problem. I know the steps
  20. Chemistry

    If 8.5g of pure ammonium phosphate , (NH4)3PO4(s), is dissolved in distilled water to make 400mL of solution, what are the concentrations (in moles per litre) of ions in the solution. How would I solve this type of stoichiometric problem. I know the steps
  21. English A1 Poem

    All afternoon my brothers and I have worked in the orchard, Digging this hole, laying you into it, carefully packing the soil. Rain blackened the horizon, but cold winds kept it over the Pacific, And the sky above us stayed the dull gray Of an old year
  22. Integrated Physics and Chemistry

    What is IMA? I'm given a picture of a pulley system and I was told to find the IMA of that pulley system. Buuut i don't know how to find the IMA, there are no numbers given in the picture. So what is IMA and how do I find it?
  23. Find the center (h,k) and radius

    Find the center (h,k) and radius r of the circle and then use these to (a) graph the circle and (b) find the intercepts, if any. 3x^2+36x+3y^2=0
  24. English

    1. If you turn right, you'll find the post office on your right. 2. If you turn right, you'll find the post office which is on your right. -------------------------- Does #1 mean #2? Or does 'on your right' modify the verb 'find'?
  25. physics

    A circuit consists of a 12.0 V battery connected to three resistors 44 ohms, 15 ohms and 120 ohms in series. A)Find the current that flows through the battery. B)Find the potential difference across the 44 Ohms resistor. C)Find the potential difference
  26. Math

    I am supposed to find the pattern of a triangle of fractions, and find the next two rows. However, I can't seem to find the pattern. Could you please help me out? Row 1: 1 1 Row 2: 1 3/2 1 Row 3: 1 6/4 6/4 1 Row 4: 1 10/7 10/6 10/7 1 Row 5: 1 15/11 15/9
  27. Math "Need Help Asap"!

    Multiple Choice Use an equation to solve the problem. 1. What is 57% of 11? (1 point) 11 = 0.57 • n; 19.3 n = 57 • 11; 627 n = 0.57 • 11; 6.27 11 = 57 • n; 0.19 2. 224 is 25% of what number? (1 point) 224 • 0.25 = w; 560 224 = 0.25 • w; 896 224
  28. statistics

    According to the Smart magazine, 70% of smokers started smoking before the age of 18. Suppose 10 smokers are randomly selected and the number of smokers who started to smoke before the age of 18 is recorded. a) explain why this is binomial experiment. b)
  29. Help needed- PreCalc

    Please help me understand how to solve this questions. I need step by step solution and answer because I find it difficult to understand when someone on here writes the answer instead of showing step by step work on how he/she got the numbers to get the
  30. reformatory system

    Where can I find information about Pennsylvania and Reformatory systems? I need to do a contrast and comparison between both but can't find a good website that explains both.
  31. MATH

    How do we find what "a" is equal to? I am not sure if we are supposed to put it back to tangent and then find the common denominator? Please help!?!? a cot 16 - a cot 57 = 9.167
  32. geography

    I am doing project about Japan.On the section of Government/history-I have to find and write about taxes I searched but did not find anything talk about taxes .Can you help me please? thank you
  33. Statistics

    The Random Variable X is normally distributed with mean 560 and standard deviation 20. Find P(X<530) which I calculated as 0.0668. However... It is known that p(|X-560|<a) Find the value of a
  34. Pre-Calculus

    suppose y is directly proportional to x. if y=6 when x=4, find the constant of proportionality and write the formula for y as function of x. Use your formula to find x when y=8.
  35. math coordinate geometry

    Find the 3rd vertex of a triangle ABC.If 2vertices are A(-4,3),B(4,3)and its centroid is at orFind. Find 3rd.
  36. Math

    Suppose A is directly proportional to the square of B,and A=45 when B=3. a)Find the constant of proportionality b)Write the formula for A in terms of B c)Use your formula to find A when B=6
  37. Algebra

    a formula that can be used to find the diagonal length of any paper square and a formula that can be used to find the total number of triangles needed
  38. math

    angles c and d are parallel and p is transversal. if m<5=110 degrees find the measure of each angle. I n the need help undrstanding how to find the measures of the angles <6, <2, <8, and <4.
  39. Calculus

    If a company’s sales (in millions of dollars) for time t months is given by f(t) = 0.003t^3 + 0.5t^2 + 2t + 3 a. Find f'(t). b. Find f'(5). c. What does this tell you about the company’s position in the month of May (i.e.,t = 5)?
  40. Social Studies

    I CANNOT seem to find any good information on William Cockerill, an entrepreneur of the industrial revolution. I have to do an essay on him, but can't find any information. ~Thanks.
  41. math

    1)find the sum of the odd integers from 25 to 75 2)find the sum of the first 20 terms in the series 10+5+2.5+1.25... . please show the steps to solve the problem^_^
  42. Math/Algebra

    I really need help! I have a paper due tomorrow and I can't find out this answer. Can you help me? The question says this: -2=n+5. Under it it says: (-2)-____=n+5-____. I know that n equals -7 but I can't find out the blanks. Please help!
  43. Calculus

    Find a general solution to each first – degree ODE. If an initial condition is given, find the corresponding particular solution. Write all solutions explicitly if possible. dr/dè = r^(2)/è
  44. addmath

    Given that k,3k and k+1 are three consecutive terms of an A.P,find the numerical value of k.Then find the first term if 3k is the sixth term of the progression. Answer:k=1over4 a=-7over4 I got the k but the a i can't get
  45. math

    Triangle JKM has j=28cm, k=17cm, and m=13cm. a. find the measure of the smallest angle b. find the area of the triangle
  46. Finite Math

    Find the value(s) of the function, subject to the system of inequalities. Find the maximum and minimum of P = 10x - 16y subject to: 0 ¡Ü x ¡Ü 5, 0 ¡Ü y ¡Ü 8, 4x + 5y ¡Ü 30, and 4x + 3y ¡Ü 20 50, 0 -96, 0 -67.5, -96 50, -96
  47. algebra

    Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(
  48. maths

    Find the gradient of the straight line that passes through the points (3,6) and (-5,-2) and hence find the equation of the line, clearly showing each step of your method
  49. Math

    In a triangle ABC, AC = 36, BC = 48, and the medians BD and AE to sides AC and BC, respectively, are perpendicular. Find AB I tryed to find the sides using Pythagorean theorem but it's not working
  50. physics

    In a television picture tube, electrons are accelerated by an electric field having a value of 1*10^5 N/C. Find the force on an electron. so i know i use E=F/q to find the force but i need the q to get it how do i do that??
  51. calculus

    Consider the function below. f(x) = 4x2 - 5x (a) Find f '(2). (b) Use the answer in part (a) to find an equation of the tangent line to the parabola y = 4x2 - 5x at the point (2, 6). y =
  52. Algebra

    For the given quadratic equation convert into vertex form, find the vertex, and find the value for x = 6. Show your work. y = -2x2 + 2x +2 -(1/2)y = x^2 - x - 1 (-1/2)y + 1 = x^2 - x (-1/2)y + 1 = (x - 1/2)^2 - 1/4 (-1/2)y = (x-1/2)^2 - 5/4 y = -2(x-1/2)^2
  53. Chemistry 9

    a) A 2.56 balloon contains 3.66 g of gas. Find the density b) A 45.3 g sample placed in a graduated cylinder causes the water level to rise from 25.0 mL to 41.8 mL . Find the density
  54. Math

    Find the area of the parallelogram determined by the vectors v and w where v=2i+3k and w=2j-3k. Area? If a=i+1j+k and b=i+5j+k, find a unit vector with positive first coordinate orthogonal to both a and b. _i+_j+_k?
  55. Chemistry

    I know Chadwick found/discovered the neutron, but my textbook does not state what experiment he did to find it. Can someone briefly state what he did to find the atom?
  56. Math - Algebra II

    Hello, i'm currently doing functions and I was fine until I got to multiplication. I really don't know what i'm doing, and would really appreciate a step by step on a few questions. f(x) = -3x + 9 g(x) = 8x + 7 Find g(f(x)) I got -24x + 16. Another : f(x)
  57. Geometry

    Use parallelogram ABCD to answer the following. Diagonals BD and AC bisect at O. 1.measurement of angle BAD = 3y - 5 find angle BCD 2. AC = 12.8 cm find OC
  58. Please help :( I am so confused....

    This is so confusing :( Given U = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20}, A = {12, 14, 16, 18, 20}, and B = {11, 13, 14, 15, 18, 19, 20}. Find A′ ∩ B′. Do not skip to the answer. Show your work, finding A’, then B’ then find
  59. physics

    truck covers 40.0 m in 7.50 s while uniformly slowing down to a final velocity of 2.65 m/s. (a) Find the truck's original speed. (b) Find its acceleration. m/s2
  60. Algebra

    I have some problems that I need help with please. Thanxs! Find the domain of the function. 1. f(x)=-8x-2 Given fuctions f and g, perform the indicated operations. 2. f(x)=4x-9 g(x)=7x-3 find f - g. Given the functions f and g, determine the domain of f +
  61. Calculus

    How do I use the product rule to solve these two questions. Much appreciated! xo Find the derivative for k(x) = (5x4 + 2)(3sin x) Find the derivative for m(x) = -ex cos x at x = 1
  62. college

    5 coins are tossed 3200times. Find the expected frequency for heads and tails also find the mean and varience of the number of heads?
  63. Math

    find the derivative of x^3-6x^2+15x+8 and show by completing the square that function has no turning point. I can find derivative but not sure of next step
  64. Math: Geometry

    If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
  65. Math: Geometry

    If 0 < y < 1 and 0 < x < 1, find the probability that y < x. Begin by sketching te graph, and then use the area method to find the probability. Please help me. I do not understand. Thank you in advance!
  66. Math

    Find the distance function s(t) if you know the acceleration function a(t)= sin(0.1t)/cos^3(0.1t) find the second derivative of a(t). I will be happy to critique your work.
  67. English

    Please help me I still can't find two cause and effect relationships in the letter to his son by Robert e lee. I read the letter and have finish annotating it but still can't find it. Please help me
  68. CalculusAB

    determine if differentiable everywhere: 3x-abs(x)-1=y i know you're supposed to find the derivative.... -- then my mind draws a blank? hahah please help me out also y=x ^ 2/5 you find the derivative and it is 2/(5x^(3/5)) now what? thanks so much
  69. Calculus

    Find the normals to the curve xy + 2x - y = 0 that are parallel to the line 2x + y = 0. I can find the normal lines and the slope but I don't know what I'm suppose to do with the line 2x + y = 0
  70. Calculus

    Find the normals to the curve xy + 2x - y = 0 that are parallel to the line 2x + y = 0. I can find the normal lines and the slope but I don't know what I'm suppose to do with the line 2x + y = 0
  71. math

    find the missing length of the right triangle the bottom number is 15 and the top angle is 17 i need to know how to find the left side of the angle?????help please
  72. algevra 2

    parallel to y=-5 and through (2/7) I need to find the slope intercept and standard form of this problem. I know this problem was already posted, but I still don't know how to find those two forms
  73. physics

    A truck covers 40.0 m in 7.00 s while smoothly slowing down to a final velocity of 2.45 m/s. Find the truck's original speed. Find its acceleration.
  74. physics

    A truck covers 40.0 m in 8.60 s while smoothly slowing down to a final velocity of 2.00 m/s. (a) Find the truck's original speed. (b) Find its acceleration.
  75. geometry

    FIND THE LENGTH OF THE RADIUS OF THE CIRCLE IS 9cm. THE ARC OF THE SECTOR MEASURES 60 DEGREES. FIND THE AREA OF THE SECTOR.
  76. science

    could someone please tellme what the orce of gravity acting upong me by Mars, Jupiter, and the moon are? I've been trying to find their gravity online, but I can't find it anywhere.
  77. Science project

    I need to find an object that will sink to the bottom of a glass of water, then rise to the surface within 30 seconds. I can't find that object!!
  78. Math

    find an equation for the line tangent to the graph of y=arccot(x) at x=1. I found that slope is -1/(1+x^2). I don't know how to evaluate arccot(1) to find y value.
  79. criminal justice

    HI can some one help me find a website or tell me where i can find this information at. "Identify the technological tools that might be used in the communication process in criminal justtice"
  80. Physics

    If the angle of incidence is 30degree and refractive index is 2 find the angle of refraction.find whether the medium is denser or rarer
  81. math

    Check Your Understanding 1. Use the function y = 100(0.2)x to find the missing value in the table below. x y -2 2,500 -1 500 1 20 4 ? i don't understand how you find it
  82. Math

    The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the function that gives the men's European shoe size in terms of x, the men's U.S. size. Men's U.S. shoe size, Men's European shoe size 8
  83. Algebra

    The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the function that gives the men's European shoe size in terms of x, the men's U.S. size. Men's U.S. shoe size, Men's European shoe size 8
  84. College Physics

    Four masses are positioned at the corners of a rectangle, as indicated in the figure below (not to scale). x 1kg------2kg | | | |y 3kg------4kg (a)Find the MAGNITUDE and DIRECTION of the net force acting on the 2.0 kg mass if x = 0.20 m and y = 0.11 m.
  85. Calculus

    *Note I reposted this question as I changed the subject** The Region "R" under the graph of y = x^3 from x=0 to x=2 is rotated about the y-axis to form a solid. a. Find the area of R. b. Find the volume of the solid using vertical slices. c. Find the first
  86. Math 2

    Use the diagram to find the surface area of a triangular prism. Find the area of the two triangular faces. Then find the area of each of the three rectangular faces. What is the surface area? Describe how you solved the problem. Prism has numbers of 4, 3,
  87. calculus

    A particle is moving along the x- axis so that its velocity at any time t ≥0 is give by v(t) = (2 pi - 5)t - sin(pi t) A. Find the acceleration at ay time t. B. Find the minimum acceleration of the particle over the interval [0,3]. C. Find the
  88. Calculus

    Find the slope of the functions graph at a given point. Then find an equation for the line tangent to the graph there. f(x)=2*square root of x. (1,2) Could someone please help me figure this one out?
  89. Calculus

    For the sequences below, find if they converge or diverge. If they converge, find the limit. an=(3^(n+2))/(5^n) an=cos(2/n) an=(2^(1+3n))^1/n I am unsure about how to get started on these problems so some assistance would be great.
  90. physics

    How can I find the mass of a weight in pounds? The question asks to find the mass of Fw=5.5*106 lb (10 to the 6th) Do I divide by 9.8? and or convert to Newtons?
  91. Math!!

    Find the lateral area for the square pyramid. Height: 22 Base: 8 Side: 8 I know the answer, I just want someone to show me how to actually calculate it to find the answer. Thanks :)
  92. math

    3. An isosceles triangle has sides length xcm xcm and 9cm. B its perimeter is less than 24 and x is a whole number. I find the lowest value of x. II find the highest value of x
  93. MATH HELP PLEASE

    Find the digit that makes _1,258 divisible by 9? List all the factors of the number 30? Find the prime factorization of the number 168?
  94. Algebra

    For f(x)=(3x^2)+5and g(x)=7x-2, a. Verify: g(x + 2) ≠ g(x) + g(2). b. Find (f – g)(x). c. Using the resulting function in (b), show that (f – g)(2) = f(2) – g(2). (The work should be different for each side of the equation.) d. Is (fg)(0)
  95. Algebra, finding the intercept, help?

    How do you find the x and y intercept of 3x+0.5y=6? I know you set x and y to 0.. and then divide by the other variable's number. I think? Could somebody explain how to find the intercepts of this problem? Thank you -Allyson
  96. Math

    find the total number of possible outcomes for 4 different cell phone models, each of which has 3 different plans. A.7 B.12 C.16 D.24 my answer is 12 please tell me if its correct if not can yo help me find the right answer thankyou
  97. Algebra 2

    f(x)=-x^2 - 3x Find the axis of symmetry, vertex, direction it opens, and write the equation in vertex form. If f(x) =x^2 + 2x g(x)= x-9 h(x) = 3x - 2 Find [f o g o h] (-2) Please explain how you got it I'm really confused right now.
  98. Visitor623

    I could not find this site in the Search Engines index This is not a search engine. You can find it among the first 10 listed by Googling the words "homework help", with or without quotes.
  99. Math

    Find the equation for the tangent line to the curve at the point defined by the given value of t.also find d²y/dx² at this point x=SECt, y=TANt,where t=π/4.
  100. Linear Algebra

    Given the following matrices A and B, find an invertible matrix U such that UA = B: A and B are 4x4 matrix and i have to find U. I was wondering how i would do this ie. the steps. if you could be as detailed as possible that would help me. I wanted to try