Pre- Calculus

21,824 results, page 6

  1. Pre Calculus

    Can someone help me with this problem...I have no Idea how to do it. Find the area between each curve and the x-axis for the given interval. y=16x-x^3 from x=0 to x=4 Thanks for the help>>
  2. Pre-calculus

    f(x)=(1/5)^x=5^-x I plugged in both into my caluculator but I only see one line, are they exactly the same? and how do I find the asymptotes?
  3. Pre Calculus

    If $22,550 is invested at 2.95% over 10 years, describe the amount of the investment if interest is compounded a. Every 2 months equation: -A(t)=Ao(1+i/n)n*t
  4. pre-calculus

    Given that the radioactive decay equation is q = 1250 e-0.05t, if t is in months, the amount of milligram present after 4½ year is?
  5. pre-calculus

    Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (sinx)^4
  6. pre-calculus

    Rewrite the expression so that it involves the sum or difference of only constants and sines and cosine to the 1st power (cos 5x)^2
  7. Pre-calculus

    Find the minimum value of f(x, y) = y – x + 1 for the polygonal convex set determined by this system of inequalities. x > 0 y > 0 2x + y< 4 the answer is -1. please tell me why
  8. Pre calculus

    How do you work this problem? Find the exact value of sin 2u, cos 2u, and tan 2u given that cot u=3 and 180<u<270
  9. Pre-Calculus

    Find the maximum and minimum values of the function for the polygonal convex set determined by the given system of inequalities. x + y > 2 8x – 2y < 16 4y < 6x + 8 f(x, y) = 4x + 7y
  10. Pre Calculus

    (a) Determine the number of terms, n, if 3+3^2+3^3+..........+3^n= 9840. (b) Three numbers, a, b and c form a geometric series so that a+b+c = 35 and abc = 1000. What are the values of a, b and c ?
  11. Pre Calculus

    If you are riding on a Ferris wheel that is 60 feet tall and it takes 5 minutes to make a one revolution, what is your linear velocity?
  12. Pre-Calculus

    How is -16/(4x+6)^5 and -1/(2(2x+3)^5) equivalent? I think -1/2(2x+3)^5 is the more simplified version of the two, but I just can't figure out how -16/(4x+6)^5 simplifies to -1/(2(2x+3)^5). please explain
  13. Pre Calculus

    Using Descartes' Rule of Signs how can you determine the number of positive and negative zeros (roots) a polynomial may have?
  14. Pre Calculus

    Can someone help me with this problem? Determine the number of positive integers less than 10,000 that can be formed from the digits 1, 2, 3, and 4 if repetitions are allowed. Thank you!
  15. Pre-Calculus

    Determine a quadratic function with this set of characteristics. x-intercepts of 2 and 7 and maximum value of 25 ( How would I find the x-coordinate for the vertex?) (Thank you!)
  16. Pre calculus

    olve the system of equations using matrices. Use Gaussian elimination with back-substitution. x + y + z     =      -5 x - y + 3z    =     -1 4x + y + z    =     -2 I need it explained to me, how do I do this?
  17. pre calculus

    can you check my work Find two different sets of parametric equations for the given rectangular equation: y=x^2+10 answer: x=t y=t^2+10 x=t^3 y=t^6+10
  18. Pre-Calculus

    explain how to do these with please. I was out a couple of days so give clear instructions. sin(π/2-ϴ)secϴ cot(π/2-x)cosϴ
  19. Pre calculus

    explain how to do these with please. I was out a couple of days so give clear instructions. 1. sin(π/2-ϴ)secϴ 2. cot(π/2-ϴ)cosϴ
  20. College Pre-calculus

    The qustion asks find all solutiions in the interval [0,2pie), correct to five decomal places. 5 cos 2x= 2
  21. Pre-Calculus

    x^4-16x^3+90x^2-111x+173 When I put this equation into the graphing calculator, I get a parabola. I'm not sure how to find the zeros. Can you help?
  22. Pre-calculus

    Use a graphing utility to approximate any relative minimum or maximum values of the function g(x)=x sqrt4-x Not getting this one, either. Thanks.
  23. pre calculus

    A sum of $5000 is be invested in a bank. if the annual interest is 10% and compounded monthly, how long will it take for the original investment to double.
  24. Pre-Calculus

    Describe the function resulting from reflecting f(x)=x^3+2x^2-x+5 about the y-axis and then shifting to the left by 4. Is this the same as performing the operations in the reverse order
  25. Pre - CALCULUS

    Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0 Give your answers in exact form. Show your work.
  26. pre - CALCULUS

    Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
  27. pre - CALCULUS

    Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
  28. pre - CALCULUS

    Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x-y+3z = 12 x+4y+6z =-32 5x+3y+9z = 20
  29. pre-calculus

    Can someone help me with this question please? A linear function may have zero, one, or infinitely many zeros. Illustarte all three of these situations. Thank you!
  30. Pre Calculus

    Applications of trigonometric functions Solve the missing parts of the triangle satisfying a=125 b=150 alpha=55 degrees There are two solutions
  31. calculus (pre)

    a riding lawn mower has wheels with a diameter of 1.4 ft and is driving at 4 mph. find the angular velocity of the tires in radians per minute
  32. Pre-Calculus

    A surveyor measures the distance between buildings X and Y as 200 feet. The angle of elevation from the base of X to the top of Y is 25 degrees. What is the height of building Y?
  33. Pre-Calculus/Trigonometry

    Help Me, Please Here is a table of values for y = f(x). x: 0, 5, 10, 15, 20, 25, 30, 35, 40 f(x): 5, 6, 7,8, 9, 10, 11, 12, 13 Mark the statements that are true. A. f(5) = 6 B. The domain for f(x) is the set {5, 6, 7, 8, 10, 11, 12, 13}. C. The range for f(x) is all real ...
  34. Pre-Calculus

    Two polynomials P and D are given. Use either synthetic or long division to divide P(x) by D(x),and express the quotient P(x)/D(x) in the form P(x)D(x) = Q(x)+ R(x)D(x) . P(x) = 6x^4 − 3x^3 + 29x^2, D(x) = 3x^2 + 13
  35. Pre-Calculus

    Write a linear equation to fit the description. The line with a slope of zero containing the y-intercept of x/3 + y/9 = 1 I'm not sure what to do here. Can someone please help me?
  36. Pre-calculus

    write the complex number -5 in polar form. I don't get how to do this because arctan of b/a would be 5/0 which is a fraction with no solution. Also, is a zero? Sorry if I'm being confusing! Thank you!
  37. Pre-Calculus

    Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..
  38. Pre calculus

    find 2 exponential functions with asymptote of y=80 , with points (0,176) (1,169) (3,156) (5,146) (20,101) (30,90) (60,81).one should have the base of "e"
  39. Pre-Calculus

    Can you please give and example of a hyperbola and ellipse with the same vertices and center that I can graph? Then explain the similarities and differences between the graphs.
  40. Pre-calculus

    Find the center radius and equation of a circle in standard form given the following conditions: 1. Tangent to 3x+2y=0 at the point (0,0) and passing through (1,-1) and (6,0)
  41. Pre-Calculus

    Umm, how do I find this? with work? Use a calculator to evaluate the function at the indicated value of x. Round your answer to four decimal places. f(x) = 3 ln x x = 0.32
  42. Pre-calculus-check answers

    If f(x)=4x^2 and g(x)=2/x, find [g x f](x). Answer: -1/2x^2 2) Are f(x)=1/2x+5 and g(x)=2x-5 inverses of each other? Answer: no
  43. Pre-Calculus

    I want to know how we know if a function is continuas or discontinuos and what are the types and diff if discontinuos functions?
  44. pre-calculus

    is the function of f(x)=x^2-4x even, odd, or neither? oh and on what intervals is the function of f(x)=|x+1|+|x-1| increasing?
  45. Pre-Calculus

    How do I solve: sin theta = -1 for all real values of theta?
  46. pre-calculus

    If sin a = 3/5 when Pi/2<a<Pi and cos B = -12/13 when Pi<B<3Pi/2, then what is the value of sin(a+b)? I don't get the question... Help appreciated.
  47. pre calculus

    A parallelogram has a 70 degree angle and sides 6 cm and 10 cm long. How long are its diagonals?
  48. pre calculus.

    x is a first quadrant angle. In what quadrant(s) does the terminal side for 2x lie?
  49. pre-calculus

    solve the following inequality 16(x^2-1) >16x the solution set is? or there is no solution.
  50. pre-calculus

    Convert the following parametic equation into a polar equation: x=t y=(2t-4)/3
  51. Pre Calculus

    Can you give me an example of properties of functions in a real life example?
  52. Pre-Calculus 11

    Simplify the following ∛375/4 This is how far I got ∛5*5*5*3/4
  53. Pre Calculus

    Simplify the expression. 9 log 9 2 This is 9 to the power of log base 9 of 2 a. 2 b. 18 c. 4 d. 9 e. none of these
  54. pre calculus honors

    solve the system if possible | x+y+z = 15 | | < 7x+y+z = 75 | | | 3x+y-z=29 a. x=10,y=2,z=3 b. x=–10,y=–2,z=–3 c. x=3,y=10,z=–3 d. x=12,y=9,z=–3 e. no solution; inconsistent system
  55. Pre-Calculus

    Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Sin(A+B).
  56. Pre-Calculus

    Given Sin(A) = ⅗ and Cos(B) = 8/17 in Quadrant I, find Cos(A+B).
  57. Pre calculus

    Write a polynomial function given the zeroes: 11i and -11i
  58. Pre Calculus

    Verify the following identity 2 tan x/1+tan^2 x = sin 2x
  59. Pre Calculus

    Establish the following identity tan(x+pi/4)=1+tanx/1-tanx
  60. Pre-Calculus

    3n=squareroot of 10n-1 And Y=squareroot of 7y-10 Help would be greatly appreciated!
  61. Pre Calculus

    Inverse functions what is the inverse function of f(x)=1/square root of x +1? and f(x)=1-x^2, x<0?
  62. Pre-calculus

    how do you graph f(x)={2x+5 if x<0 {5 if 0¡Üx¡Ü10 {2x-10 if x>10 (the {'s is supposed to be one long one)
  63. Pre-Calculus

    solve by fully factoring x^3-7x-6=0 How would I fully factor this?
  64. Pre-Calculus

    Simplify arctan 1/3 + arctan 2/3(round to the nearest degree).
  65. pre calculus

    Find the exact values: tan(7pi/4) - tan (pi/6)
  66. Pre calculus

    Find a unit vector in the direction of the given vector. v=(1,-1)
  67. Pre-Calculus

    if cos theta =7/13, where 0<theta<pi/2, fin the value of cos2theta
  68. Pre-Calculus

    Simplify the trigonometric expression: cos^3x+sin^2x cos x
  69. Pre-calculus

    Can someone please help me with this problem.. I don't get it! Solve (sqrt 5r - 9)-3 = sqrt(r+4)-2
  70. math: pre-calculus

    Solve the equations. Log(6x-1) = Log(x+1) + log4
  71. Pre-Calculus

    Find a polynomial with the zeros -1, 7, sqrt2, and -(sqrt2). Can this be f(x) = x^4 - 6x^3 - 9x^2 + 12x + 14?
  72. Pre Calculus

    Find the value of x. log4 65,536 = x a. x = 32,768 b. x=8 c. x = 65,536 d. x=4
  73. Pre-Calculus

    csc theta = sqr root of 5, what is cot theta?
  74. Pre-Calculus

    Convert to Rectangular: r*tan theta/sec theta=2 A. y=2 B. y=1/2 C. x=2 D. x=1/2
  75. Pre Calculus

    Find the 2 x 2 matrix A such that pmatrix{(-1,-1)(1 -1)} A = I, where I is the 2 x 2 identity matrix.
  76. Pre calculus

    4x^2-25y^2-8x-100y-196=0 how do i find the conic section to find the center?
  77. Pre-Calculus

    I'm having a had time with this problem. Could you please help with step by step resolution? e^-x / e^-1 + 3 dx Thank you..
  78. Pre-Calculus

    Assume sin A = sin B. If A = π/8, find B. Please show work so I'll know what to do.
  79. Pre-Calculus

    Determine the equation of a line that passes through (2,2) and is parallel to the line tangent to y=3x^3-2x at (-1,5)?
  80. Pre-calculus

    Given that alpha=(14pi/3) what is the least positive angle coterminal with alpha?
  81. Pre-Calculus

    Find the rectangular coordinates of the point with the given polar coordinates. (3, 150°)
  82. Pre-Calculus

    Express the number in rectangular form. 3(cosπ/3+isinπ/3)
  83. Pre-Calculus

    Have I converted correctly from standard form to vertex form? y = -3x^2 + 12x+1 = y = -3(x-2)^2 -13 Thanks
  84. pre-calculus

    State the amplitude, period, phase shift, and vertical shift of the function y= -3 (1/2x- 2/3 pi)-4
  85. Pre-Calculus

    If csc theta = square root of 5 divided by 15, find sin theta
  86. Pre-Calculus

    csc theta = (sqr root 5) over 15, find sine theta
  87. pre calculus

    Find all of the solutions of the equation x^4-625i=0 and represent the solutions graphically.
  88. Pre-Calculus

    Convert to rectangular: theta=(2pi)/3 A. y=-sqrt3 B. y=-sqrt3x C. x=sqrt3 D. x=-sqrt3y
  89. pre calculus

    change the equation to rectangular coordinates: r= 2(sin theta -cos theta)
  90. Pre- calculus

    Change the equation to rectangular coordinates: r= 2(sin theta-cos theta)
  91. pre-calculus

    What is the polar form of the equation 3x - 4y = 12? The answer is r = 12/ (3cosx - 4 sinx) (x = theta) I don't know how to get the answer though.
  92. Pre Calculus

    Determine the coordinates of the point (xy) where the curves y=(12)x−5 and y=x2+2x−15 intersect in the third quadrant
  93. Pre-Calculus

    How do I write the quadratic function f(x) = 1/2 (6x^2 - 24x + 22) in standard form, and go about graphing the function?
  94. pre calculus

    Change the exponentioanl expression to an equivalent expression involving a logarithm. e^-1/3 = 9t Somebody help PLease!
  95. Pre Calculus

    (cotx)(cscx)+secx=(csc^2x)(secx) Please help to verify this trigonometric identity.
  96. pre calculus

    for the given function f and g, find the specified value of the function. State the domain: f(x)=2x-5; g(x)=7x-9 a. (f-g)(x)= b.(f/g)(x)= I need help!
  97. Pre-calculus

    Explain how the graph of f(x)=(-2)/(x-3)^2 can be obtained from the graph of y=1/x^2 by means of translations, compressions, expansions, or reflections.
  98. Pre - calculus

    Can someone please explain how to simplify this proiblem: cotx/sec^2 + cotx/csc^2
  99. Pre-Calculus

    Find the polar coordinates of each point with the given rectangular coordinates. Use degrees. (-4,-3)
  100. Pre-Calculus

    Find all rational zeros of the polynomial, and write the polynomial in factored form? P(x)= 2x^3-3x^2-2x+3
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