Pre- Calculus

21,837 results, page 43

  1. 8th grade pre algebra line segments

    It's asking me to use a grid and lengths of line segments to give a geometric argument but I'm not sure what that means or looks like.
  2. pre calc

    A 50 gram sample of radioactive strontium will decay to 32 grams in 18 years. a. Find an equation that will model how much of our sample M will remain after t years.
  3. Math (pre-celc 12)

    BC Place has 16 gates. In how many ways can you enter and leave the stadium by any gate? I'm not sure if this this is a combination or a permutation. I think it's a permutation and my answer is 256 ways. Thanks for the help.
  4. pre cal

    Simplify the following expressions. Your answers must be exact and in simplest form. (a) log8(8^−5x−10)= (b) 12^log12(−5+7q)= (c) log4(64^k)= (d) 3^3log3(10−10log3^3)=
  5. Pre algebra

    A fair charge an admission fee of $6 for each person. Let C be the cost of admission (in dollars) for P people. Write an equation relating C to P. Then graph your equation using axes
  6. Pre-Calc

    If a pilot wants to travel 400 mph at a bearing of 80, what should he set his speed and bearing to counteract a wind blowing at 50 mph coming directly from South?
  7. Pre-Algebra Polynomials and Properties of Exponent

    1. 16x^2 + 2 + 2x - 15x^2 - 1 + 14x A. 31x^2 + 16x + 1 B. x^2 - 12x + 1 **** C. x^2 + 16x + 1 D. x^2 + 16x + 2 2. 2x^2 + 8 - 4x + 3x - 6x^2 + 7 A. -8x^2 - 7x + 15 B. -4x^2 - x + 15 **** C. 4x^2 + x + 15 D. 8x^2 + 7x + 15 3. 4x^2 + 8x - 11x + 6 - 5x^2 + 2 A. -x^2 - 3x + 8 **** ...
  8. Pre Calc!

    Two ships, one sailing at 30 km/hr and the other at 45 km/hr, left port at the same time. Three hours later they were 120 km apart. If you had to find the angle between their courses an equation that could be used to solve this problem is:
  9. Biology - Help!

    Based on your knowledge of eukaryotic gene regulation, what series of events would explain the generation of the "pre-activated" state for the full set of B-globin like genes (epsilon, gamma, delta, and beta) in the earliest embryo?
  10. Studying for Pre Cal exam

    Find the fourth roots of − 1/2 + (square root)3/2 i Write the roots in trigonometric form. A - w 1=cos(35°)+isin(35°) w2 =cos(125°)+isin(125°) w3 =cos(215°)+isin(215°) w4 =cos(305°)+isin(305°) B - w1 =cos(40°)+isin(40°) w2 =cos(130°)+isin(130°) w3 =cos(220...
  11. Language Arts

    What is the simple predicate in this sentence? Branches buried in the mud are food for the winter. a. are b. buried c. for I thought it was buried, but when I submitted the answer for a pre-test it said it was wrong and I'm a little confused.
  12. pre-calc

    prove or disprove cos(x-y)=cos(x)-cos(y)
  13. Calculus 2

    Calculus 2. Tom and Mike have a bet as to who will do the most work today. Mike has to compress a coil 200 feet. It takes Mike 250 lbs to compress the coil 10 feet. Tom needs to pump water through the top of a cylindrical tank sitting on the ground. The tank is half full, has ...
  14. Pre Cal

    Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t, whenever possible. (If there is no solution, enter NO SOLUTION.) 4ð = ( , ) sin(4ð) = cos(4ð) = tan(4ð) = cot(4ð) = sec(4...
  15. Pre-Calc

    A box is formed by cutting squares out of the corners of a flat piece of metal, and folding the sides up. What size cuts should I make to a 14in. by 20in. piece to get a volume of 270in cubed?
  16. Pre cal

    If Joe invested $7000 at x% and $13,000 at 3% more, find x if the income from both investments is $1190 I'm thinking that the equation would r something like 1,190=(13,000)(.03) but please correct me if I'm wrong. Thank you for your assistance.
  17. Pre Cal.

    Given that x is an integer between -2 and 2, state the relation represented by the equation y = 2-abs(x) by listing a set of ordered pairs. Then state whether the relation is a function. I think it's: (-2,0) (-1,1) (0,2) (1,1) (2,0)
  18. Pre-Calc

    Describe the conditions necessary for the two circles, where circle a has a larger radius than circle b, to have no points of intersection, while each circle is entirely in the exterior of the other circle.
  19. Pre-Cal

    1) Solve the equation exactly for x: log3 x - log3(x-3) = 2 I got 1 as an answer. Is this correct? 2) Find the cotangent of the base angle of an isosceles right triangle. sqrt3 / 2. Is this correct?
  20. Pre-Calc

    Tee Ball is similar to baseball, but the field is a diamond 40 ft square. The pitchers mound is positioned 25 ft from homeplate. Determine the distance from the pitchers mound to 3rd base.
  21. Pre-Calc

    Can someone please be kind and show me the steps on this? Thanks Find the equation of the circle centered at the origin in the uv-plane that has twice the circumference of the circle whose equation equals (u-5)^2 + y^2 =9
  22. Pre-Algebra

    Suppose you consider a rectangular garden of 36 square meters with whole-number side lengths. What’s the dimension of design that has the least perimeter? What’s the dimension with the greatest perimeter?
  23. Pre-Alg

    (Check my work?) 1.) Use arrow notation to write a rule that describes the translation of a point from (5,6) to (6,11) A.(x,y) -> (x + 1, y + 5) B.(x,y) -> (x - 1, y - 5) C.(x,y) -> (x - 1, y + 5) D.(X,y) -> (x + 1, y - 5) 2.) Point A(6,-2) is reflected over the x-...
  24. pre-cal

    if the helicopter is moving forward at 30 mph and drops 400 feet in the elevation while the vehicle is moving 48 mph, how does the angle of depression change after 10 minutes?
  25. Math Pre-Calc/Trig

    If 11 square meters of tile are available to make a rectangle whose width must be 6 meters less than its length, what would be the dimensions of the rectangle?
  26. Honors Pre- AlgebraMath

    Winona needs to average 5.8 points from 14 judges to win the competition. The mean scores from 13 judges were 5.9. What is the lowest score she can get from the fourteenth judge and still win?
  27. Pre-calc/Trignometry

    Two boats leave at an angle of 25 pie/36 radians, one has a speed of 100km/hr and the second has a speed of 65 km/hr. How far apart are they after two hours?
  28. math

    if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
  29. Pre calc

    evaluate the expression under the given conditions. cos(θ − ϕ); cos(θ) = 5/13, θ in Quadrant IV, tan(ϕ) = − square root15,ϕ in Quadrant II Anyone know how to do this I have never been this confused in my life
  30. Pre-Algebra (check my answer)

    5. Dave has work shirts in 5 different colors. He works three days each week. How many possible arrangements are there for the shirts each week? A. 15 B. 60 C.120* D.125
  31. math

    Urban Community College is planning to offer courses in Finite Math, Applied Calculus, and Computer Methods. Each section of Finite Math has 40 students and earns the college $40,000 in revenue. Each section of Applied Calculus has 40 students and earns the college $60,000, ...
  32. calculus

    Hi, I have online homework for calculus and I have to input two equations that will describe this graph. I have an image but Jiskha won't let me link to any websites... if this is allowed the URL to the image of the graph is img145.imageshack.us/ img145/1787/80193630 .png ...
  33. pre-calc

    how do you solve this: the square root of a+4 plus the square root of a-3 equals 7
  34. pre calc

    True or false: a. |3x-5|=|2x+4| if and only if 3x-5=2x+4 or 3x-5= -(2x+4) ______ b. |2x+7|=-4 if and only if 2x+7=4 or 2x+7=-4 ______ how do you do these and what's the answer? thanks
  35. pre calc

    list the positive ientegers between -3 and 7 list the integers between -3 and 7.
  36. Pre-Cal

    1)find f(g(x)) f(x) = x^2 + 2x g(x) = 1/x x^3 + 2x Is this correct? 2) solve: 3^x-1 = 10 ln 3/ ln 10 = .264 Is this correct? I am not sure how to do these. 3) Solve: 3^x+2 - 4 = 12
  37. Pre Calc

    From a committee of 6 people how many sub-committees of 3 can be formed, and with 7 people and with 8 people and with n people?
  38. pre-calc

    how do i solve this equation algebraicly solve the equation 1+25cos(x)=25sin^2(x)
  39. Pre Algebra

    equations of the system Ax-4y=9, 4x+By=-1 explain how to find the values of A and B,then find these values
  40. Pre-calc

    1. Find the polar coordinates of (8, –8) for r > 0. 2.Find the rectangular coordinates of (9, 150°)
  41. Pre-Calc/Trig

    State the domain and range for each function. y=2x^2/(x^2-1) domain: ? range: ?
  42. pythagorean triple

    Pre-algebra which set represents a pythagorean triple? a. 60,70,100 b. 18,24,30 c. 10,14,17 d. 10,20,30
  43. Pre Cal

    Simplify the expression in a+bi form. (3+i)(5-2i)(4-7i) a. 67-145i b. 75-123i c. 53-145i d. 61-123i
  44. Pre algebra

    On the map 5 miles corresponds to 2 inches. How many miles correspond to 7 inches?
  45. pre algebra

    what is the domain of the function below? f(x)= -x^2 + 11 thank you choices are: 1. (- infinity, 11) 2. (-infinity, infinity) 3.(-11, 11) 4. (11, infinity)
  46. Pre Algebra

    Simplify: 1: (-12xy2z)(3xy) 2: -12xy2z divided by 3xy 3: 2x(2x - 5) 4: -2x(2x-5) Please help!
  47. Pre- Algebra

    which is steeper, a line with a slope of 7 or a line with a slope of -10? Can you explain it to me also?
  48. Pre-Algebra

    There are (24)2 ⋅ 20 books in a cupboard. What is the total number of books in the cupboard? 22 26 28 216
  49. Pre Calculus 30

    I'm having a hard time understanding the fundamental counting principal and I don't even know where to start on some of the questions.Here are a few questions I'm having trouble with. 1.Andrea, Brian, Carol, David, Emmalee, Floyd, and Gloria are to stand in a line for a ...
  50. Craig - baloon - calculus moved up

    Posted by Craig on Tuesday, November 25, 2008 at 7:54pm. t: 0 2 5 7 11 12 r'(t): 5.7 4.0 2.0 1.2 0.6 0.5 The volume of a spherical hot air balloon expands as the air inside the balloon is heated. The radius of the balloon in feet is modeled by a twice-differentiable function ...
  51. Pre-Calc

    Can anyone help with the following problem please...Thank u so much Let f(x) =|9x|. For the area above the x-axis and between the lines x= -9 and x=18 a. draw and label a sketch with the area shaded b. find the area of the region in the xy-plane under the graph of f(x)
  52. math pre cal

    Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?
  53. Pre-calc

    An investment firm has a job opening with a salary o $30,000 for the first year. Suppose that during the next 39 years, there is a 5% raise each year. Find the total compensation over the 40-year period.
  54. Pre-caluclus

    I do not know how to solve for y to get the inverse of this question: The number of elephants in a park is estimated to be P(t)=7500 1 + 749e^(−0.15t) where t is the time in years and t = 0 corresponds to the year 1903. Find the inverse of P(t). What is the ...
  55. Pre-Calc

    The displacement from equilibrium of an oscillating weight suspended by a spring and subject to the damping effect of friction is given by y(t) = (1/4)e^-t cos6t, where y is the displacement in feet and t is the time in seconds. Find the displacement when t is equal to 0. ...
  56. Pre- Algebra

    Please answer as soon as you can I need help figuring this out :) Which number is greater than 5.5 x 10^-7 and less than 5.5 x 10^7? A. 1.8 x 10^-12 B. 6.7 x 10^8 C. 5.2 x 10^3*** D. 3.9 x 10^-3 If you know what the answer is can you, if at all possible, explain how you got ...
  57. Calculus

    Hi there i am having some problems trying to do my calculus homework and i really need help on how to show the step to proof the volume of a sphere which is V= 4/3pirsquare. But I have to use triple integral to proof the volume of a sphere. Please help me and give me some good...
  58. pre-algebra

    write an inequality with the same meaning as -5 ¡Ý y would that be -5 ¡Ý 5 ?? This looks like greek to me. my sign changed when I posted my question, I had -5 is equal to or greater than Y my answer was Y= -4 but i think i got it now it should be Y= -11 not -4 right ? -5 &...
  59. pre-calc

    I am trying to get the polynomial; x^7+2x^6+3x^5+4x^4+6x^3+6x^2+7x+8 divided by; x^5-2x^4-3x^3+5x^2+2x-3 into a partial fraction form so that I can create a system of equations to solve for. So far, after dividing I have (x+1)(x-1)^2, and (x^2-x-3) as factors along with an ...
  60. trig (pre-cal class)

    Suppose è is an acute angle of a right triangle. For this function, find the values of the remaining five trigonometric functions of è. Round to four decimal places. sin è = 0.1 cos è = tan è = cot è = csc è = sec è =
  61. Pre-Cal

    A website is offering a savings account that pays 33% compounded continuously. How much interest would a deposit of $3,000 earn over 15 years? (Round your answer to the nearest cent.) I used f(t)=Pe^rt and got 1000e^-0.045t I don't know what I did wrong. Thank you.
  62. PRE-CAL

    Complete the table assuming continuously compounded interest. (Round your answers to two decimal places.) Initial Investment== ? Annual % Rate== ? Time to Double== 11YRS Amount After 10 Years== $1600 Using formula A=Pe^rt ?
  63. pre cal

    Given f(x)=x^4-7x^3+18x^2-22x+12 A: list all possible rational zeros B: Graph f(x) C: Find all zeros D: show f(x) in factured form thanks I can't figure it out. Can skip B... thanks
  64. Pre-Cal

    evaluate the trigonometric functions by memory or by constructing appropriate triangles for the given special angles. a) csc 30 degrees b) sin pi/4 = sqrt2 / 2 I just do not know how to find csc 30 degrees.
  65. pre calc

    the longest side of a triangle is 34 feet. the measures of two angles of the triangle are 40 and 65 degrees. find the lengths of the other two sides using law of sines and cosines
  66. pre-algebra

    Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?
  67. medical billing

    The Local School District Has Asked Your Clinic To Submit a Proposal To Do Pre Employment Physicals FOr 60 Bus Drivers What Financial Or Accounting inFOrmation Do You Need To Submit The Proposal
  68. black history

    I have been searching for days my son is in the pre k and has to do a report on Jackie Johnson. I cant find anything other than some news reporter can someone help me WHO IS JACKIE JOHNSON?
  69. Pre-Algebra

    Tropical storm Alpha has winds of 50 miles per hour. Write and solve an inequality to find how much the winds need to decrease so that the storm is downgraded to a depression.
  70. Pre-Cal (polynomials)

    Look at the right end behavior of each function )\(as x -> infinitey). what about the function determines whether its graph wil point up or down on the right-hand side?
  71. Pre Cal

    An airplane leaves an airport and flies due west 150 miles and then 230 miles in the direction S 39.67 degrees W. How far is the plane from the airport at this time to the nearest mile.
  72. pre-calculas

    Find the function that is finally graphed after following transformations are applied to the graph of y=ãx in the order list 1. shift down 8 units 2. reflect the x-axis 3. reflect the y-axis
  73. Math (Pre-Cal)

    There is exactly one triangle the length of whose sides are integers in arithmetic progression and whose area is 156 square units. Find the perimeter of this triangle.
  74. Pre-Algebra

    Which of the following examples would show a negative trend? height and weight of students test scores and height of students outside temperature and heating bill none of these
  75. pre-calc

    on a graph there are 3 points, (-3,0) (0,2) (1,0) now, by using transformations, y= f(x)+1 is the answer: (-3,1) (0,3) (1,1) ?? and also y= -f(x-2) (using original points) is it (-3,2) (0,0) (1,2) or is it (-3,-2) (0,-4) (1,-2) ?? im not sure in what order you have to reflect ...
  76. pre cal

    Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form. 3, -13, and 5 + 4i Urgently need help
  77. pre algebra

    1. what is the sum of 5/6 + 2/3? a.1 1/3 b.1 1/2 c.1 2/3* d.1 3/4 2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can receive chocolate? a.13* b.17 c.19 d.21 my answer=* please explain how you got your ...
  78. Pre-Calc.

    The two equal sides of an isosceles triangle are each 24 centimeters. If each of the two equal angles measures 60, find the length of the base and the altitude. (leave your answer in radical form).
  79. pre-cal

    Change of Base Formula logb x = loga x/loga b to evaluate log14 41. (Round your answer to three decimal places.) i need a step by step preview please
  80. Pre-ALgreba

    A kite flying in the air has a 12 - ft line attached to it. Its line is pulled taut and casts a 10 - ft shadow. Find the height of the kite. If necessary, round your answer to the nearest tenth.
  81. Pre cal

    A parallelogram has sides of lengths 7 and 4, and one angle is 55°. Find the lengths of the diagonals. (Round your answers to two decimal places. Enter your answers as a comma-separated list.)
  82. math help please

    if the pre image of a figure is located at (4,2) (-3,-3)(0,8) and it is reflected in the y-axis followed by a translation of 3 units left and 6 units down where is the new image locate give vertex coordinates
  83. Pre-Calc

    Suppose that f has a domain of A and g has a domain of B. (a). What is the domain of f + g? (b). What is the domain of fg? (c). What is the domain of f/g? Is there a mathematical rule or theorem for this type of question?
  84. calculus

    Posted by Paul on Friday, February 19, 2010 at 3:57am. I have the function f(x)=e^x*sinNx on the interval [0,1] where N is a positive integer. What does it mean describe the graph of the function when N={whatever integer}? And what happens to the graph and to the value of the ...
  85. Pre Algebra

    I need help. This eguation is solving equations with variables and integers. 5x=-25 I need help getting how to do this equation. The other set ups I get but this one just seems to confuse me big time. Please help 5x=-25 multiply both sides by 1/5 to get x=-5
  86. College pre calc

    Use bionomial formula to find the coefficient of the t^2 m^8 term in the expansion of (3t+m)^10. I got so far this 10C8 x 3^2 x t^2 x m^8 It tell me the next step is here =45 x 9 x t^2 x m^8 where did the 45 come from?? It doesn't explain that to me! The answer is 405 by the ...
  87. pre-calc college

    a certain type of fencing comes in rigid 10 foot long sections. Four uncut segments are to be used to fence in a garden on the side of a building. what value of x will make the garden as large as possible?
  88. Biology

    How are the following terms related to the process of transcription and one another? Eukaryotes, Prokaryotes, membrane-bound nucleus, introns, exons, precursor RNA (pre-mRNA), mature RNA, heterochromatin, euchromatin, and structural gene.
  89. Pre Cal

    An airplane travels due west for 2.5 hours at 340 miles per hour. Then it changes course to S51°W. Find the airplanes distance from its point of departure and its bearing, after a total flight time of 4.5 hours.
  90. Pre-Calc (Circles)

    Describe the conditions necessary, where circle A has a larger radius than circle B, for the two circle to have no points of intersection, while circle B is entirely in the interior of circle A.
  91. calculus

    an airplane flying due east at 400 km/h pasess over an airport 12 minutes before a second plane flying south 30 degrees west at 500 km/h.if the airplanes are at the same altitude how fast will they by seprating when the seccong pane is over the airport.?When will they be the ...
  92. math, Calculus

    Need help with these calculus questions, would really appreciate it. Heres a link to the question sheet, http://i45.tinypic.com/28mired.jpg i scanned it and put it on tinypic.com since I'm not sure how to type it up. Would really appreciate the help thank you!!!
  93. Pre Algebra Math

    Hi I rlly need someone to check my answers ASAP, and I need help on number 5, im totally fried >.< I can't get any attachments up, but any of you took the Polygons and Angles Quiz? Pretty plz with cherries on the top I need help!
  94. Pre-Algebra

    Hi, Well, I have a test tomorrow and I was hoping that's someone could maybe help me? I don't understand probability... Here's a question I don't understand: Find the probability of tossing three coins and getting only two tails. Can anyone help?
  95. Pre Algebra

    How could I solve this problem?: A lot measures 60ft by 100ft. The house on the lot measures 30ft by 50ft. What is the area if the lawn? This is about reasoning strategy: Use multiple strategies
  96. Pre-cal

    A set of data is normally distributed with a mean of 16 and a standard deviation of 0.3. What percent of the data is between 15.2 and 16? I had: 16-t(0.3)=15.2 and 16-t(0.3)=15.7 which came to 0.497-.341=0.156. rounded off I came up with 16%. What did I do wrong?? Thanks
  97. physics pre-lab

    By trial and error with your calculator, find the angle theta for which sin theta and theta differ by 5%. This calculation must be done in radians. When you have found theta, express it in degrees. plzzz help thanx
  98. Pre-Cal

    The radioactive isotope of Carcon (^14C)has a half life of 5730. What is the decay constant of ^14C? If we start with a sample of 1000 carcon nuclei, how many will be left in 22920 years time?
  99. Mathematics: Pre-cal

    Consider a rectangular bathtub whose base is 12 ft^2. At what rate is water pouring into the tub if the water level rises at a rate of 0.9 ft/min? Please show steps. (I want to know how)
  100. Pre-Cal

    A box with a square base and an open top is constructed from 5400 cm^2 of cardboard. Find the dimensions of the largest possible box. I know the answer is : base lenght - 42.4 cm height- 21.2 cm please help me, thank you so much :)
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