1. math

    Can you please help with finding rate of change in graphing? One question has times: 0 15 23 30 35 distance:30 70 0 45 60 Can you help me get started, I don't know what to do? Also, in another question for the slope I have to find which line has greatest

    asked by sara on November 20, 2016
  2. Calculus

    Let R be the region bounded by the y-axis and the curves y = sin x and y = cos x. Answer the following. a)Find the exact area of R. b)A solid is generated by revolving R about the x-axis. Find the exact volume of the solid.

    asked by ronnieday on March 23, 2012
  3. Algebra

    Find the period of a pendulum that is 3 meters long if the period, T, of a pendulum in seconds can be found using the formula T = 2pi(square root L/9.8 find it for 2.5 meters as well. Would love to see the work, not just the answer. thank you.

    asked by Cassie on October 27, 2009
  4. math

    South America’s population was 515,000,000 people in 2000 and 38,000,000 in 1900. To find the rate of increase, we should begin with subtracting to find the actual increase –

    asked by Sara on August 2, 2010
  5. Physics

    A person skateboarding with a constant speed of 1.30 m/s releases a ball from a height of 1.25 m above the ground. Given that x0 = 0 and y0 = h = 1.25 m, find x and y for (a) t = 0.250 s and (b) t = 0.500 s. (c) Find the velocity, speed and direction of

    asked by Zz on October 3, 2017
  6. Trig

    If angle A is 45 degrees and angle B is 60 degrees. Find sin(A)cos(B), find cos(A)sin(B), find sin(A)sin(B), and find cos(A)cos(B) The choises for the first are: A. 1/2[sin(105)+sin(345)] B. 1/2[sin(105)-sin(345)] C. 1/2[sin(345)+cos(105)] D.

    asked by Sade on October 8, 2016
  7. math correction

    I had asked on these problems previously but here is my final answers are they correct now... Problem #1 Find the simple interest assume a 360-day year. Round result $17000 at 9%for 119 days. My answer: 504.90 Problem #2 Find compund amount for the

    asked by student on June 29, 2007
  8. ACCOUNTING

    Posted by dakota on Tuesday, August 13, 2013 at 2:03am. 1. If market interest rates are higher than the rate offered on the bonds being sold, they will be sold at: A. a premium. B. a discount. C. face value. D. a loss. 2. When bonds are issued at a

    asked by dakota on August 13, 2013
  9. physic

    An aeroplane is heading 20 degree North of East,flying at 200km/hr relative to the air. Simultaneously the wind carriers the plane 10degree East of South at speed of 60.0km/hr. (a) find the velocity of the relative to the ground.(you may solve it

    asked by Ishak on March 30, 2017
  10. Chemistry

    Dr. Bob222 Please don't get frustrated with me, I'm really trying to figure this out... UGH!! I'm starting over again... Please advise... . Consider the following chemical equation: TiCl4(g) + 2Mg(l) → Ti(s) + 2MgCl2(l) 3.54×107g of TiCl4(g) were

    asked by Jennie on February 26, 2015
  11. Help...pHysics

    a ball is thrown at 15m/s at an angle of 30 degrees to the horizontal , how far does it travel horizontally before making contact with the ground? I don't remember very well, but I believe the formula you need is: x0 = -.5at^2 + vt + x where x0 is the

    asked by sean on October 7, 2006
  12. Math

    On a scale drawing,the scale is 1/4 inch:1 foot. Find the dimensions of each room in the scale drawing. How would you find the answer? 10 feet by 9 feeet

    asked by Nina on June 9, 2010
  13. Homework Help Calculus

    Find the linear approximation L(x)of the function f(x)=cos(pi/(6)x) at the point x=1 and use it to estimate the value of cos(13pi/72). Here's what I did so far: L(x)=sqrt(3)/2-1/12pi(x-1)+0((x-1)^2) How do I find cos(13pi/72)

    asked by Amy on October 16, 2013
  14. Geometry

    Two rectangles are similar the ratio of the lengths of their corresponding sides is 1:2 find the ratio of the peremeters of the two rectangles the find the ratio of the areas explain your answers

    asked by Anonymous on March 4, 2012
  15. Calculus

    Find all points of intersection (r,theta) of the curves r=4cos(theta), r=1sin(theta). Next find the area inclosed in the intersection of the two graphs.

    asked by Nat on February 11, 2018
  16. Algebra

    Could you please check my answers and help me with one? Find the domain of the function. f(x)=-8x-2 -I got the domain being (negative infinity, postive infinity). g(x)= 3x/x^2 -49 (This one I don't understand how to find the domain)

    asked by Soly on September 13, 2007
  17. Science - Optics

    A lens has a magnification of +2.0 and if the focal length is +10 find the impage position and the object position. The type of lens is a diverging lens, but how do i find the di and the do if nothing else is given?

    asked by Yasmin on February 28, 2010
  18. statistics

    The population mean and standard deviation are given. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n=36, find the probability of a sample mean being less than 12.2 if M=12 and O=0.95

    asked by Anonymous on November 16, 2010
  19. Calculus 1

    I'm asked to find max and min of: L(t)=12+2.8sin((2pi/365)(t-80). I find the derivative as: L'(t)=(5.6*pi/365)*cos[(2pi/365)(t-80)] but I get lost afterwards.

    asked by Leo on July 8, 2013
  20. math

    questions involving domain and range... 1. Find the domain of the function f(x)=(3x+1)/(sqrt of (x^2+x-2)) andd. 2. Let f(x)= (absvalue(x))/x. Show that f(x)={ 1, x > 0 {-1, x < 0 Find the domain and range of f(x).

    asked by alk on August 4, 2008
  21. maths

    find the radius of the circle if length of arc is 4p cm and angle made by the arc at the centre is 40 deg.find the area made by the arc.

    asked by urvashi on February 23, 2013
  22. Math

    Find the ratio and simply. Triangle find the shortest side to the longest 22.2, 9.6, 20 The simplified ratio is Type ratio as a simplified fraction

    asked by Amalia on January 31, 2016
  23. math (pls help!)

    A. Find the complement of the angle shown. B. Find the supplement of the angle shown. pls show all your work (52 degrees acute angle)

    asked by Michael on February 21, 2019
  24. Math

    The sum of the first and fourth terms of an arithimetic sequences is 2 and the sum of their squares is 20 1. Find the common difference 2.find the sum of the first eight terms of the squence

    asked by Ishimwe on March 12, 2016
  25. math

    Find the area of the following plane figure. An ellipse has a major axis of 14 cm and a minor axis of 10 cm. Find its area. Area (to the nearest tenth) =

    asked by C on July 5, 2016
  26. precalculus HELP!

    I posted this question before: What is the area enclosed by the graph of the absolute value(3x)+ the absolute value(4y)=12 I tried solving for y and got: y=4-x when I graphed this, I got a linear equation graph...I am wondering if I am supposed to find the

    asked by sara on December 4, 2006
  27. MATH

    1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL STEPS) sin 2x - sin x = 0 2.) GIVEN: sin u = 3/5, 0 < u < ï/2 Find the exact values of: sin 2u, cos 2u and tan 2u using the double-angle formulas. 3.)Use the half-angle formulas to

    asked by MAKITA on April 10, 2009
  28. physics

    Position vector r has magnitude of 14.8m and direction angle 240 degrees. 1. Find it's components, enter x and y components of the vector 2. Find the components of the vector -2r, enter x and y components of the vector 3. Find the magnitude of the vector

    asked by Jessica on September 20, 2012
  29. statistics

    Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. Find the probability that a randomly selected college

    asked by latoyia daniels on January 15, 2012
  30. physics vectors

    In the figure below, a spider is resting after starting to spin its web. The gravitational force on the spider is 0.158 N on the junction of the three strands of silk. The junction is supported by different tension forces in the two strands above it so

    asked by john on August 24, 2016
  31. physics

    A stereo speaker emits sound waves with a power output of 100W. (a) find the intensity 10.0m from the source. B) find the intensity level in decibels, at this distance. C) at what distance would you experience the sound at the threshold of pain,120dB?

    asked by sammy on April 10, 2007
  32. Physics

    An object in SHM oscillates with a period of 4.0 s and an amplitude of 10 cm. How long does the object take to move from x=0cm to x=6cm. Okay, so first I used f=1/T to find the frequency =0.25Hz. Then, I used frequency to find omega w=2*pi*f =1.57 rad The

    asked by Jon on January 11, 2011
  33. Vectors

    if a=3x+2y and b=5x-4y, find x and y in terms of a and b What I did: 2a=6x+4y +b=5x-4y --------- 2a+b=x 2(3x+2y)+(5x-4y)=x 6x+4y+5x-4y=x 11x=x 11x dvided by x = 11 ...that isn't the correct answer. The correct answer (according to text book) is

    asked by annonymous on February 2, 2015
  34. Physics

    An object of mass m1 = 4.10 kg placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging object of mass m2 = 6.70 kg as shown in the figure -> Find the magnitude of the acceleration of

    asked by Jack on October 2, 2016
  35. Math question

    I don't understand how to find the aproximate area of a shaded region This problem has a big cirlce with 1/4 shadded with a radius of 20 cm. the answer chocies are A. 90 cm squared B. 270 cm squared C. 314 cm squared D. 1.256 cm squared how do I find the

    asked by Anne on December 7, 2010
  36. Physics

    Two packing crates of masses m1 = 10.0 kg and m2 = 6.50 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 6.50 kg crate lies on a smooth incline of angle 39.0°. a)Find the acceleration of the 6.50 kg crate.

    asked by scott on September 24, 2008
  37. Physics

    Two packing crates of masses m1 = 10.0 kg and m2 = 3.50 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 3.50 kg crate lies on a smooth incline of angle 37.0°. Find the acceleration of the 3.50 kg crate. up

    asked by Elisa on June 9, 2008
  38. Statistics

    Use the following table to answer the questions. (Give your answers correct to two decimal places.) x 1 1 3 3 5 5 7 7 9 9 y 3 2 6 1 3 3 3 2 5 3 (a) Find the equation of the line of best fit. y hat = 2.6+.1x (b) Find the ordinates y hat for the points on

    asked by Tracy on June 29, 2013
  39. Chemistry

    A pyrotechnician mixes 280 g of black powder for a firework. Find the amount of oxygen, carbon dioxide, and sulfur dioxide generated when this firework bursts, if the oxidizing agent in the powder is saltpeter. How do I find their amounts?

    asked by Student on January 21, 2018
  40. College Algebra and Trigonometry

    Two guys wires for a radio tower make angles with the horizontal of 50 degree and 49 degree. If the ground anchors for each wide are 150feets apart, find the length of each wire assuming the wires are straight and find the height of the tower?

    asked by Julani on November 5, 2012
  41. Biology

    ***I read the textbook assignment and I have read all the information on the lesson, however I cannot find the answer to this question. Nor can I find anything written about it anywhere in the lesson. Please help a girl out.*** True or False? There are

    asked by Erin on December 19, 2013
  42. calculus

    Let F(x)= the integral from 0 to 2x of tan(t^2) dt. Use your calculator to find F″(1) By applying the fundamental theorem of calculus, I got the derivative of the integral (F'(x)) to be 2tan(2x^2) When I take the derivative to find F''(x) I get 8x

    asked by Anonymous on May 16, 2018
  43. Physics

    Negative charge is distributed uniformly around three-quarters of a circle of radius, a, with the center of curvature at the origin. a) Use integration to find an algebraic expression for the x and y components of the net electric field at the origin in

    asked by Anonymous on June 14, 2016
  44. Calculus

    Consider a regular tetrahedron whose face is an equilateral triangle of side 7. Find the area of the horizontal cross section A at the level z=3. A= ? Find the volume of the tetrahedron. Consider a regular tetrahedron whose face is an equilateral triangle

    asked by Mwe on February 7, 2015
  45. Calculus

    1. Find the domain for the particular solution to the differential equation dy/dx=3y/x, with initial condition y(1) = 1. A. x > 0 B. x < 0 C. x ≠ 0 D. All real numbers 2. Use geometry to evaluate the integral from negative 2 to 6 of f of x, dx where f of

    asked by Justin on August 1, 2019
  46. Pure Mathematics

    1. Given that the straight line y=c-3x does not intersect the curve xy=3, find the range of values for c. 2. Find the range of values for c for which the line y=cx+6 does not meet the curve 2x^2-xy=3. 3. Find the range of values for k for which 8y=x+2k is

    asked by Kerry-Ann on February 9, 2013
  47. alegebra

    A car with a sticker price of $42,200 with factory and dealer rebates of $5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the nearest cent.) $ 1 (b) Find the monthly payment if financed at 2.5% add-on interest

    asked by kena on May 26, 2013
  48. Math HELP

    The table below shows the measured dimensions of a prism, and the maximum and minimum possible values based on the greatest possible error. Dimensions l w h Measured 9 5 3 Maximum 9.5 5.5 3.5 Minimum 8.5 4.5 2.5 a. Find the measured volume. b. Find the

    asked by Stephen on November 19, 2010
  49. Math (please help!)

    1. θ is a first quadrant angle in standard position and cos 1/(sqrt10)= . Find the exact value of sin . 2. feta is a second quadrant angle in standard position and tan(feta) -((sqrt5)/2) = . Find the exact value of cos(feta) . 3. θ is an angle in

    asked by noel on June 11, 2012
  50. physics rotational acceleration - I am confused

    A gyroscope slows from an initial rate of 32.0 rad/s at a rate of 0.700 rad/seconds squared. How many revolutions does it make before stopping? If only I could find the angular velocity first, in radians/second... I'm assuming 0.700 rad/second squared is

    asked by anonymous on September 11, 2017
  51. Physics

    Two copper blocks, each of mass 2.12 kg, initially have different temperatures,t1 = 18° C and t2 = 26° C. The blocks are placed in contact with each other and come to thermal equilibrium. No heat is lost to the surroundings (a) Find the final temperature

    asked by Dev on April 25, 2012
  52. english helpp please

    i need to know how to find the whole appositive phrase. Then write just the word that is the appositive. how do i find them its reall confusing.... thankss in advance http://www.chompchomp.com/terms/appositive.htm This webpage gives a clear definition and

    asked by cassii on August 23, 2006
  53. analytic geometry

    1. Find the equation of the asymptotic of the hyperbole x^2/9 - y^2/ 4 = 1. 2. Given the equation of a function 2x^2 + 5y^2 - 16x + 20y + 108 =0, translate the original so that the New equation will have no first degree terms. 2. Find the radius and the

    asked by sylvia on January 28, 2016
  54. algebra

    Help would be greatly appreciated!!! This gets really confusing for me. Write an inverse variation equation. If y varies inversely with x and y=2 when x=4…. a. Find K. b. Write a general equation. c. Use your equation to find y when x=8 Draw a chart to

    asked by Anonymous on September 29, 2011
  55. Algebra

    Factor find the zeros x^5-9x^3 Find the quotient and remainder using long division (x^3-x^2-2x+6)/(x-2) Use sythetic division and remainder therem to evalulate P(c) Let P(x)= 6x^7-40x^6+16x^5-200x^4-60x^3-69x^2+13x-… *Calculate P(7) by (a) using

    asked by HELpppppppp on December 7, 2009
  56. Research-DELL

    could you help me find some articles about dell's compeition during the early 1980s with other computer makers. ive tried looking everywhere i cannot find anything. i need to write about problems dell experienced before its company went public in 1988 so

    asked by tayna on May 7, 2009
  57. Chemistry

    Can I ask for the 3D model of the ammonium cyanate. It's formula mass and picture. I cannot find my Merck. Your school or public library is likely to have a Merck Handbook, and you may find it there. http://classweb.gmu.edu/sslayden/graphics/graphics.htm

    asked by Danielle Stacey on August 29, 2005
  58. Find this video?

    Where can I find this? In 1915, 50 years after the end of the Civil War, D.W. Griffith, released his epic film Birth of a Nation. The greatest blockbuster of the silent era, Birth of a Nation was seen by an estimated 200 million Americans by 1946. I need

    asked by Kathlyn on May 14, 2014
  59. Statistics- I'm stuck and its due tonight

    In a particular hospital, 6 newborn babies were delivered yesterday. Here are their weights (in ounces): 112, 96, 109, 126, 99, 106 Assuming that these weights constitute an entire population, find the standard deviation of the population. Round your

    asked by Rachal on February 13, 2011
  60. Physics

    A robot probe drops a camera off the rim of a 239 m high cliff on Mars, where the free-fall acceleration is -3.7 m/s^2. a) Find the velocity with which the camera hits the ground. b) Find the time required for it to hit the ground. Ok so I'm not even sure

    asked by Lindsay on September 25, 2007
  61. finance in healthcare

    Where can I find some information about this? Most of the class is talking about the costs of health care I would like to do something different. I need to find two current health care financial problems and how they overcame the problems and how effective

    asked by Mary on July 10, 2013
  62. 2 problems---math

    1. find the relationship of x and y in the table. x: 2; 4; 6; 8; 10 y: 1.5; 2; 3; 4.5; 5 y = _______ x + ________ 2. find the relationship of x and y from a graph of a line that crosses the y-axis at y = 6 and that goes into the left 2 units and rises 3

    asked by Liv on April 12, 2018
  63. math

    a cord is used to lower vertically a block of mass M a distance d at a constant downward acceleration of 1\4 g, find the work done by the cord on the block ? FIND THE WORK DONE BY THE FORCE OF GRAVITT

    asked by samina on January 1, 2011
  64. maths

    A rectangular plot of dimensions 125m by 78m is surrounded by gravel of width 3m uniform through out the plot. find the area of path and cost at 8.5 per m^2.find area of path

    asked by fab on December 7, 2016
  65. Physics

    If a man has an average useful power output of 31 W, what is the minimum time, in s, it would take him to lift fifty 12.3 kg boxes a height of 2.3 m. i'm thinking i should find the work done then find power with p = work/time

    asked by henry on November 8, 2011
  66. pre cal

    find the standard form of the equation of a parabola with the vertex (0,0) and the directrix y=6 find the standard form of the equation of the ellipse with center (0,0) and foci at (+- 4square root 3, 0) and verticies (+-8,0)

    asked by joe on May 25, 2007
  67. Trigonometry

    Given the coordinates of a triangle, A (-3,-4), B (5,-2), C (-5,6) 1. Find the midpoints of each side of the triangle 2. Find the distances of each of the medians of the triangle (the line segment joining the vertex of a triangle and the midpoint of the

    asked by Hannah on July 29, 2019
  68. trig

    Am I right on this? 2sec^2(2x)-8=0 2sec^2(2x)=8 divide by 2 sec^2(2x)=4 find square root sec(2x)=2 Now, would this simply be asking me to find where secant is equal to one? Or is there no solution because secan't (pun intended) be equal to anything above

    asked by Alex on March 23, 2008
  69. Math

    Find the unit rate. Round to the nearest tenth, if necessary. 344 miles in 11 hours 344 3,784 0.03 31.27 ** Find the unit rate. In 10 months, 62.6 gallons were used. 0.16 10 6.26 ** 626

    asked by Kelly on December 1, 2016
  70. physics

    Find the resultant, in magnitude and direction of a force of 40 N which makes an angle with the + X axis of 38o and a force of 20 N acting along the + X axis. Find the x and y components of the resultant and express them as i and j vectors.

    asked by Anonymous on November 7, 2012
  71. physics

    (a) Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to six times the earth's radius of 6.38 106 m. (b) Find the satellite's orbital period.

    asked by Anonymous on April 29, 2010
  72. College Math

    I have been struggling with this problem I cannot get the right answer. Please give me the steps to solve this problem. Let f(x)= (2x-9)(x^2 + 6) (A) Find the equation of the line tangent to the graph of f(x) at x=3 (B) Find the values(s) of x where the

    asked by Ronnie on June 19, 2010
  73. math

    What is an example of a composite figure in your home or community? How would you decompose it to find the area? Can you think of another reason that it would be helpful to decompose these figures in addition to making it easier to find the area of the

    asked by sadgrg on April 6, 2018
  74. Trig

    If I have a triangle with the hypotenuse side as 7, and the opposite side as 3, how would I find the angle? (This is a right triangle.) ......III .....IIII .7..IIIII ...IIIIII..3 ..IIIIIII _IIIIIIII

    asked by Jill on March 23, 2010
  75. Trig

    In each right triangle ABC, find B. The right angle is at C. 1. a= 11.7 m, b= 14.9 m 2. The angle of depression from the top of a 64-ft-tall tower to a deer is 47 degrees 16 minutes. Find the distance from the deer to the bottom of the tower.

    asked by Lauren,=) on January 8, 2010
  76. Physics

    If you drop a 1.0 kg weight from a height of 1.0 m, how many joules of kinetic energy will it have when it reaches the ground? Can I use the equation for work: W = F*s to find the kinetic energy? Or would I have to find the velocity of the weight as it

    asked by Kyle on October 10, 2011
  77. Health

    I need an example of a health fraud item/ product. I need to find one product that has health fraud and that I can write 150 words about. I tried searching on google but cant find anything/ don't know what to search. do you know of any products? thanks

    asked by hannah on January 27, 2011
  78. Physics

    (a) Find the speed of a satellite moving around the earth in a circular orbit that has a radius equal to five times the earth's radius of 6.38 106 m. (b) Find the satellite's orbital period. Please Help!

    asked by Mike on January 21, 2013
  79. algebra- Help fast

    use the compound interest formula A=P(1+r/n)^nt and A=Pe^rt to solve 1-Find the accumulated value of an investment of $5000 at 9% compounded continuously for 6 years. 2-Find for an investment of $700 at 16% compounded quarterly for 2 years.

    asked by anonymous on March 3, 2009
  80. chemistry

    How can I determine which elements have higher first and second ionization energies than other elements? Also, how can I find the number of valence electrons from the electron configuration? Also, how can I use the electron configuration to find out what

    asked by Anonymous on March 1, 2009
  81. Geometry

    1. One angle of a rhombus measures 60 degrees. If the perimeter ois 20 inches, find the length of both diagonals. 2. An equilateral triangle has an altitude of 18 inches. Find the are and perimeter of the triangle

    asked by Autumn on May 19, 2016
  82. statistics

    Assume the population distribution of FEV is normal with standard deviation 400 mLi. (a) find P(E) is n=15 and population mean is 2800 mLi (B) find P(E) is n=15 and the population mean is 2600mLi (C) How does P(E) depend on the population mean?

    asked by Sam on October 13, 2009
  83. Math

    You want to find the total amount of water in a storage tank that measures 2 ft by 4 ft by 3 feet. Which of the following expressions could be used to find the measure of the tank capacity in cubic feet? a. 2x4x3 b. 2+2+4+4+3+3 c.(2x4x3)x2 d.(2+4)x3

    asked by Holly on August 20, 2012
  84. calculus

    y=5/x-3 find the zeros,relative min and max.the max and min find the intervals on which yis positive or negative. on which y is decreasing.intervals y concave up or down.points of inflections

    asked by donna on December 19, 2008
  85. Maths

    Find the rule for the volume of a cylinder in terms of r only if the height is equal to its circumference. The surface area of a cylinder is 2pi square units. Find a rule for h in terms of r.

    asked by Ted on November 5, 2016
  86. Math

    A particle moves in a straight line with velocity t^(-2)-(1/16) ft/s. Find the total displacement and total distance traveled over the time interval [2,5 ok i got the displacement is .1125 ft however i can not find the distance! help!

    asked by Anonymous on November 18, 2007
  87. Maths

    Can you help me? I have this question: Find the equation of the line given the following information: m=UD, x=3. And I have to find the equation. Then it says: Identify the slope and y intercept from the following equations: x=5, m=___, b=___ I also have

    asked by Paws on January 18, 2014
  88. Algebra

    1)Find x in the solution of the system 3x+y=2 and 2x-3y=16 A)2 B)-4 C)18/11 D)10/11 I chose A 3x+y=2 times 3 = 9x+3y=6 2x-3y=16 times 1 = 2x-3y=16 11x/11 = 22/11x = 2 2)Find the coordinates of the vertices of the figures formed by y -< x + 2, x + 2 -< 6,

    asked by Jon on February 16, 2008
  89. College algebra

    how do you find the population (in thousands) of people of a city is growing according to the function P(t)=1500(2)^0.144t, where t is the number of years since 2001. I need to find the population of the city in 2001 and in 2008.

    asked by Lindy on July 24, 2015
  90. Algebra

    Use the formula pH = −log[H^+] 9.. The hydrogen ion concentration of a substance is 4.3*10^-6 × moles per liter.Find the pH. Round to the nearest tenth. 10. Find the hydrogen ion concentration of a solution whose pH is 5.3.

    asked by john on December 10, 2015
  91. algebra word prob 1

    i need to write an expression that would help find the total cost of fifty $6.00 movie tickets and eight $12 play tickets. THen find the total cost. i wrote: ($50.00 x 6) + ($8x12) = 300 + 96 =$396 is that right?

    asked by Marko on October 6, 2011
  92. college algebra

    Demand Equation: The price p, in dollars, and the quantity x sold of a certain product obey the demand equation x = -5p + 100, 0 (less than or equal to) p (less than or equal to) 20 a.) Express the revenue R as a funtion of x. b.) What is the revenue if 15

    asked by Candi on July 20, 2007
  93. calculus

    given y = 4x-3 find the minimum value of xy. find the rate of change of xy with respect to x. find the rate of change of xy with respect to y.

    asked by julie on January 6, 2008
  94. Calculus

    I have three questions I need help solving 1) A ball's position, in meters, as it travels every second is represented by the position function s(t) = 4.9t2 + 550. What is the velocity of the ball after 3 seconds? 2) The cost in dollars of producing x units

    asked by Dante on October 2, 2017
  95. statistics

    The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

    asked by Ashley on November 26, 2012
  96. statistics

    The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

    asked by Ashley on November 26, 2012
  97. statistics

    The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

    asked by Ashley on November 26, 2012
  98. Statistics

    An insurance company wishes to examine the relationship between income (in $,000) and the amount of life insurance (in $,000) held by families. The company drew a simple random sample of families and obtained the following results: (Family) (Income)

    asked by Jak on April 22, 2013
  99. math

    ).Find all numbers for which the rational expression is undefined. (4)/(v-2) 2).Find the lcm of (6+7u), (36-49^(u^2)),and(6-7u) ? 3). The speed of train a is 14 mph slower than the speed of train b. Train a travels 190 miles in the same time it takes train

    asked by alia on May 29, 2010
  100. Math

    1. The base of an isosceles triangle is 14 cm in length and the angle opposite the base measures 86 degrees. Find the length of each of the congruent sides. 2. A ski slope has a 42 degrees incline and 170 yard long. Find the vertical drop.

    asked by Tsunayoshi on February 4, 2014

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