1. Algebra

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 414 feet, find the width and the length.

    asked by Alonzo on July 29, 2012
  2. math

    A fraction becomes 1/2 if 5 is subtracted from its numerator and 3 is subtracted from its denominator. However,if we divide the numerator by 2 and add 7 to the denominator,the fraction becomes 1/4. Find the fraction.

    asked by Alllen Justy on May 28, 2016
  3. Math

    The perimeter of rectangle P is 12 feet. The perimeter of rectangle Q is 18 feet. Both rectangles have the same area.Find the area and dimensoin of each rectangle.

    asked by Sarah on April 20, 2011
  4. Algebra

    A boat can go 20 miles against a current in the same times that it can go 60 miles with the current. The current is 4 miles per hour. Find the speed of the boat with no current.

    asked by John on January 14, 2014
  5. math

    the cost of 2 bottles of water and 3 pretzels is $16.50 whereas 4 bottles of water and 1 pretzel is $15.50. Find the cost of a water bottle and a pretzel.

    asked by Anonymous on February 24, 2016
  6. math

    I am a decimal with a value in the thousands place.In my tenths place,you will find a digit one less than the digit in my Hundreds place and three less than my other digit.My last digit is 3.What decimal am I?

    asked by farzan on October 2, 2014
  7. St.george high school

    The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.

    asked by Lynn on November 4, 2012
  8. probability and Stats

    How can I find standard error from each of the following: a) a proportion & a sample size? b) mean, standard deviation, and sample size? c) mean & standard deviation? thank you

    asked by Bridget on October 31, 2016
  9. Math

    A man can do a certain task in 21 hours, another man can do the task in 28 hours and a boy can do the task in 48 hours. Find how long it will take to do the task if all three work.

    asked by Gary on December 4, 2017
  10. Algebra 1--Please, help me!

    Find any excluded values of each rational expression. 1. t - 1/ t^2 - t A: Excluded value: 1. Simplify each rational expression, if possible. Identify any excluded values. 2. 3x^2/6x^3 A: 2x; x ≠ 2 3. 2n/n^2 - 3n A: ? 4. s + 1/s^2 - 4s - 5 A: ? 5. 12 -

    asked by Victoria on May 27, 2014
  11. math

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length

    asked by barbara on September 10, 2014
  12. Math

    Proportion - If a 30-foot tree cast an 18-foot shadow, find the length of the shadow cast by a 24-foot tree.

    asked by Judy on September 10, 2014
  13. maths

    The mean age of 30 students in a class is 14 years .5 students with mean of 15 years left the class. Find the mean age of the remaining students?

    asked by Anonymous on January 3, 2013
  14. Math

    The length of a rectangle is 5 meters more than twice the width, and the area of a rectangle is 42 square meters. Find the length and width of the rectangle.

    asked by Jake on May 8, 2017
  15. geometry

    the perimeter of a square window is 18 feet 8 inches. Find the area of the window in a square inches and in square feet.

    asked by Kimberley on December 8, 2014
  16. algebra

    A man can do a certain task in 21 hours, another man can do the task in 28 hours and a boy can do the task in 48 hours. Find how long it will take to do the task if all three work.

    asked by melvin on December 4, 2017
  17. algebra

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length

    asked by barbara on September 10, 2014
  18. math

    The length of a rectangle is 3 feet less than twice the width of the rectangle. If the perimeter of the rectangle is 144 feet, find the width and the length

    asked by Anonymous on September 11, 2014
  19. physics

    Given the position function s(t) = t cos t, find the velocity function. Answer v(t) = -sin t v(t) = sin t v(t) = cos t - t sin t v(t) = cos t + t sin t

    asked by laura on May 28, 2014
  20. Science

    If you scratch a penny with an steel file, will the copper of the penny rub off on the file, or the steel (iron) of the file rub off on the penny? 12. What can we determine from the above experiment about the relative hardness of copper and steel. 13. What

    asked by Please help on March 17, 2018
  21. Calculus

    Find the volume of the solid whose base is the region in the xy-plane bounded by the given curves and whose cross-sections perpendicular to the x-axis are (a) squares, (b) semicircles, and (c) equilateral triangles. for y=x^2, x=0, and y=0 (a) integral

    asked by Anonymous on December 15, 2007
  22. physics

    A wrecking ball (weight = 4880 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3520 N. As the drawing below shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the

    asked by ERsa on November 17, 2013
  23. Physics

    Two artifacts in a museum display are hung from vertical walls by very light wires. Wire T1 is horizontal from the left wall and goes to a center weight of 177N and wire T2 is at a 53 degree angle with the right wall heading from right to left downwards

    asked by Brock on December 6, 2014
  24. physics

    A hungry 675 -N bear walks out on a beam in an attempt to retrieve some "goodies" hanging at the end. The beam is uniform, weighs 250 N, and is 5.00-m long; the goodies weigh 110 N. When the bear is at x = 1.00 m, find the tension in the wire and the

    asked by Emily on October 21, 2012
  25. Alegebra

    A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 50 seconds.

    asked by Samantha on August 8, 2009
  26. statistics

    How many TV's are there in your household?” was one of the questions on a questionnaire sent to 5000 people in Japan. The collected data resulted in the following distribution: Number of TVs/Household 0 1 2 3 4 5 or more Percentage 1.9 31.4 23.0 24.4

    asked by MissPatte on August 30, 2014
  27. Math

    The length of one leg of a right triangle is 8ft. The length of the hypothenuse is 2feet longer than the other leg. Find the length of the hypothenuse and the other leg. The length of the hypothenuse is _______ ft. The length of the other leg is

    asked by Pam on February 20, 2014
  28. Intergration: Measurement (Math)

    I don't get it. I need to find out these conversions. 15,000 g= ____ kg 5,000 mL= ____ L 75 mL= ____ L 390 mL= ____ L 0.03 m= ____ mm 6 m= _____ mm 2.48 L= ______ mL 43.2 L= ______ mL 807 mL= _____ L 3,751 m= _____ km

    asked by Sami on May 14, 2012
  29. Geometry. Please help.

    1) Two angles are complementary. The measure of one angle is 21 more than twice the measure of the other angle. Find the measure of the angles. 2) If a supplement of an angle has a measure 78 less than the measure of the angle, what are the measures of the

    asked by Melanie on August 30, 2011
  30. Mathematics -- Geometry --

    A bowling ball is a solid ball with a spherical surface and diameter 30 cm. To custom fit a bowling ball for each bowler, three holes are drilled in the ball. Bowler Kris has holes drilled that are 8 cm deep and have diameters of 2 cm, 2 cm, and 3 cm.

    asked by Knights on February 12, 2013
  31. English

    Can you please check these other questions, too? Thank you very much. 1) What characterized the 18-century novel? 2) How did the writer achieve the ideal of realism in the 18-century novel? 3) Refer briefly to the structure of Defoe's novel? 4) What kind

    asked by Henry2 on August 23, 2011
  32. algebra

    A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln for various times (in minutes) is shown in the following table. Time, min

    asked by Cathy on October 24, 2014
  33. calculus

    Interference Two identical tuning forks are struck, one a fraction of a second after the other. The sounds produced are modeled by f1(t) = C sin(wt) and f2(t) = C sin(wt + Alpha). The two sound waves interfere to produce a single sound modeled by the sum

    asked by Yasha on April 15, 2012
  34. Thermodynamics and Heat Transfer

    A steam pipe is 75 mm external diameter and is 80 m long. It conveys steam at a rate of 1000 kg/h at a pressure of 2 Mpa. The steam enters the pipe with a dryness fraction of 0.98 and is to leave the pipe with a dryness of not less than 0.96. The pipe must

    asked by Raul on April 21, 2010
  35. Algebra

    Niko had his savings increased by 5% this year. He started with $350 in his account and calculated how much he had at the end of the year by using the following sets of calculations: $350×0.05=$17.50 $350+$17.50=$367.50 Find a single number that Niko

    asked by Stephanie on February 11, 2015
  36. physics

    A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45o with the field because the coil has made

    asked by johnathan on November 23, 2012
  37. physics

    Both drawings show the same square, each of which has a side of length L = 0.86 m. An observer O is stationed at one corner of each square. Two loudspeakers are located at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the

    asked by Anonymous on January 28, 2013
  38. Algebra 2

    How do you set up this?I am lost Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of

    asked by JOY on October 12, 2011
  39. physics

    Both drawings show the same square, each of which has a side of length L = 0.86 m. An observer O is stationed at one corner of each square. Two loudspeakers are located at corners of the square, as in either drawing 1 or drawing 2. The speakers produce the

    asked by lamaye on December 8, 2014
  40. Physics

    A circular coil (660 turns, radius = 0.037 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.024 s, the normal makes an angle of 45o with the field because the coil has made

    asked by Elle on November 3, 2014
  41. physics

    can anyone please help me on this one? A circular coil (980 turns, radius = 0.078 m) is rotating in a uniform magnetic field. At t = 0 s, the normal to the coil is perpendicular to the magnetic field. At t = 0.027 s, the normal makes an angle of 45 degrees

    asked by johnathan on November 18, 2012
  42. math

    A picture is copied onto a sheet of paper 8 inches by 10 inches. A 2-inch margin is left all around the picture. Find the length, width, and area of the picture. Length = 10 inches Width = 8 inches Area = 80 inches squared am i right?

    asked by John on May 25, 2016
  43. physics

    A pushes with force of 300 N at 25 degrees. B pushes with force of 275 N at 160 degrees. C pushes with force of 325 N at 300 degrees. Find resultant force. I got 187 N at -19 degrees or 161 degrees. Correct? or could you explain more please? Thank you.

    asked by Anonymous on November 7, 2010
  44. chemistry

    Hydrogen iodide reacts with itself to give hydrogen and iodine. The equilibrium constant is about 2.0 x 10─3 at a particular temperature. If you were to place some hydrogen iodide in a container and seal the container, what would you expect to find at

    asked by alex on April 10, 2013
  45. Math

    The tens digit of a two-digit positive integer is 2 more than three times the ones digit. If the digits are interchanged, the new number 13 less than half the given number. Find the given integer. (Hint: Let x = tens-place digit and y = ones-place digit,

    asked by Anonymous on September 30, 2011
  46. math

    In an election for a town mayor there were three candidates A,Band C the votes were shared between the three candidates A, B and C. A received 150% more votes as received by B. B received 50% more votes as received by C. Candidate B received 6186 votes.

    asked by Summit on June 14, 2016
  47. MATHS

    The population of town A increases from 1,346 to 1,500. In the same period, the population of town B increases from 1,546 to 1,800. a. Find the percent of increase in population for town A and for town B. b. Which town had the greater percent of increase?

    asked by Lily on December 6, 2012
  48. Esol

    in which sentences legal used as adjective ? He is a legal resident of united state-it is legal to wear green on march 7th--he didn’t know that jaywalking was not legal--it’s not legal to jaywalk-find a adjective. my answer = He is a legal resident of

    asked by Victoria on February 21, 2017
  49. Mathematics

    There are 70 women in a club. Each play at least one of the following games:20 play volleyball only ‘10 play basketball only,6 play table-tennis only. 4 play all the three games and an equal number play two games only. a) Illustrate this information on a

    asked by Princess on December 26, 2018
  50. algebra

    Q 2: If the ticket agency charges ‘p’ dollars per ticket for a concert, it can sell maximum of (40000 – p) tickets. Find: a. A polynomial to represent the total revenue with a ticket price as p dollars. b. How many tickets will be sold for a price of

    asked by Anonymous on April 26, 2010
  51. algebra

    For the years 2010 to 2050, the projected percentage P of the U.S. population that will be 18 to 24 years old during year t is estimated by P= -0.025t+ 60.35. complete the table t 2010 2020 2030 2040 2050 p use the table to find the year when the

    asked by tee on March 14, 2013
  52. chemistry

    The following data were collected at the endpoint of a titration performed to find the molarity of an HCl solution: Volume of acid (HCl) used = 14.4 mL; Volume of base (NaOH) used = 22.4 mL; Molarity of standard base (NaOH) = 0.200 M; What is the molarity

    asked by vin on November 29, 2010
  53. Math

    In 1920, the record for a certain race was 46.6 sec. In 1980, it was 45.4 sec. Let R(t)= the record in the race and t = the number of years snce 1920. a) Find a linear function that fits the data R(t) = b) Use the function in (a) to predict the record in

    asked by Liz on March 11, 2010
  54. factorization

    In a game, you draw a card with three consecutive numbers on it. You can choose one of the numbers and find the sum of its prime factors. Then you can move that many spaces on a game board. You draw a card with the numbers 25, 26, 27. Which number should

    asked by kymy on February 7, 2015
  55. AP calculus

    The base of a cone-shaped tank is a circle of radius 5 feet, and the vertex of the cone is 12 feet above the base. The tank is being filled at a rate of 3 cubic feet per minute. Find the rate of change of the depth of water in the tank when then depth is 7

    asked by Alannah on December 16, 2012
  56. algebra

    Marcella and Rupert bought party stuff. Marcella bought 3 packs of ballooons and 4 packs of favors for a total of $14.63. Rupert bought 2 packs of balloons and 5 packs of favors for a total or $16.03. Find the price of each and write a system of equations

    asked by Melissa on November 8, 2009
  57. Trigonometry

    A space shuttle pilot flying over the suez canal finds that the angle of depression to one end of the canal is 38.25 degrees and the angle of depression to the other end is 52.75 degrees. If the canal is 100.6 miles long, find the altitude of the space

    asked by TIA on October 4, 2010
  58. Pre Cal

    a piece of wire 5 inches long is to be cut into two pieces. One piece is x inches long and is to be bent into the shape of a square. the other piece is to be bent into the shape of a circle. Find an expression for the total area made up by the square and

    asked by Ashley on July 24, 2011
  59. math-repost

    Data regarding the value of a particular color copier is representing in the graph. Find the rate of change of the value with respect to time, in dollars per year. The line goes from 8 vertical to 10 horizontal. The points on the graph are on the value 4

    asked by Anonymous on September 18, 2010
  60. CALC HW

    FIND THE X VALUES OF ALL POINTS, -2PI LESS THAN OR EQUAL TO X LESS THAN OR EQUAL TO 2PI, WHERE Y=X+B IS TANGENT TO Y=X+BSINX. I KNOW THE ANSWER IS PI/2 AND 3PI/2, BUT WHY AREN'T THEY PLUS OR MINUS. If they are tangent, they have the same coordinates, and

    asked by anonymous on January 8, 2007
  61. statistics

    A firm has 30% of its service calls made by a contractor, and 15% of these calls result in customer complaints. The other 70% of the service calls are made by their own employees, and these calls have a 5% complaint rate. Use Bayes’ theorem to find the

    asked by James on June 27, 2012
  62. statistics

    The weekly study times for all students in a school are normally distributed with μ = 18 hours and σ = 6 hours. If 36 students are randomly selected, find the probability that their mean study time is greater than 20 hours. My work:

    asked by Judy on September 15, 2016
  63. Trigonometry

    A plane at an altitude of 12,000 feet finds the angle of depression for a building ahead of the plane to be 10.4 degrees. With the building still straight ahead, two minutes later the angle of depression is 25.6 degrees. Find of the plane relative to the

    asked by Manuel on January 29, 2017
  64. Physics

    A particle undergoes three displacements. The first has a magnitude of 15 m and makes an angle of 40 ◦ with the positive x axis. The second has a magnitude of 6.2 m and makes an angle of 158 ◦ with the positive x axis. After the third displacement the

    asked by Robert on October 5, 2014
  65. 7th Grade Math

    What is the radius of a CD in cm? What\'s the height of a CD cm? What\'s the volume of the CD? What\'s the measure of the radius in the center of the CD to the beginning of the music area and the volume of it? Subtract the answer from Part D from your

    asked by Anonymous on February 25, 2012
  66. Algebra

    Al¡¦s Rentals charges $25.00 per hour to rent a sailboard and a wet suit. Wendy¡¦s Rentals charges $20.00 per hour plus $15.00 extra for a wet suit. Find the number of hours for which the total charges for both companies would be the same. ƒæ Let h

    asked by Taylor on November 15, 2014
  67. math

    Please help!!!!! You earn $240 for your first paycheck. You pay 22% of it in taxes. You decide to put 40% of the remaining money into savings. How much money will you have left to spend? -The amount you pay in taxes is? -The remaining after taxes is?

    asked by jay on January 17, 2017
  68. Physics

    A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. The first place is between the charges and is 4.03 cm to the left of the negative

    asked by CombatVetUSMC on July 14, 2012
  69. geometry

    Marc is visiting washington dc he wants to know the height of the washington monument the length of the monument shadow is 111 feet long at the same time that marcs shadow is 1 foot long Marc is 5 feet tall using this data find the height of the monument

    asked by :) on March 5, 2012
  70. Calculus

    Consider a hemispherical bowl of radius 10cm. (4 points) If the water level in the bowl is h cm deep, find the radius of the surface of the water as a function of h. (6 points) The water level drops at a rate of 0.1 cm per hour. At what rate is the radius

    asked by Karina on December 2, 2012
  71. Civics

    To become a law, typically a bill must be approved by: a. The House of Representatives, the Senate, and the President b. The House of Representatives c. The Senate d. The Supreme Court I chose Letter A, but someone how my teacher said it was incorrect. I

    asked by Dave on July 19, 2016
  72. Science

    Waste produced by people in New York State has been dumped into the Atlantic Ocean, where it is distributed by surface ocean currents. Which coastal area is most likely to become polluted by this waste? A west coast of Mexico B south coast of South America

    asked by Angie on February 5, 2009
  73. Physics

    A lever is 5m long. The distance from fulcrum to the weight to be lifted is 1m. If the worker pushes on the opposite end with 400N, what is the max weight that can be lifted? l=5m h=1m F=400N F_g=? torque=F_g*l I first must find torque so that I can plug

    asked by Andrea on November 7, 2007
  74. physics

    A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pion moving through the lab frame at v=0.98c decays into two gamma rays of equal energies, making equal angles θ with the direction of motion. Find the angle

    asked by mike on March 13, 2011
  75. chemistry

    I need to find a balanced chemical equation for the reaction that occurs when sodium cyanide dissolves in water. So far I have got NaCN + H2O = HCN +NaOH, does not seem balanced to me, any help please. Can't you tell if it is balanced or not? It's a matter

    asked by Sam on February 9, 2007
  76. Physics

    A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pion moving through the lab frame at v=0.98c decays into two gamma rays of equal energies, making equal angles θ with the direction of motion. Find the angle

    asked by Pardis on March 14, 2011
  77. Physics

    A pion has rest energy 135MeV. It decays into two gamma rays that travel at the speed of light. A pion moving through the lab frame at v=0.98c decays into two gamma rays of equal energies, making equal angles θ with the direction of motion. Find the angle

    asked by Pardis on March 13, 2011
  78. math

    A ship leaves port at 7 am and heads due east at 34 knots. At 10 am, to avoid a storm the ship changes course to N 57° east of north). Find the ships distance from port at 2 pm. Round to the nearest tenth. To determine nautical miles multiply the speed in

    asked by Anonymous on November 6, 2016
  79. History

    To become a law, typically a bill must be approved by: a. The House of Representatives, the Senate, and the President b. The House of Representatives c. The Senate d. The Supreme Court I chose Letter A, but someone how my teacher said it was incorrect. I

    asked by Dave on July 18, 2016
  80. PHYSICS

    An automobile accident investigator needs to determine the initial westerly velocity of jeep (m=1720 kg) that may have been speeding before colliding head-on with a Volkswagen (m=1510 kg) that was moving with a velocity of 75.7 km/h east. The speed limit

    asked by Tony on December 27, 2014
  81. math

    Fill in the blanks y = 10x + 100 x y -20 ? -10 ? 0 ? 10 ? I don't see any blanks to fill in. Are they telling you values of y and asking you co compute x? Or vice versa? The spacing changed the format I had. the values for x are -20, -10, 0, 10 now I need

    asked by Bianca on July 7, 2007
  82. math

    A map's key shows that every of 5 inches on the map represents 200 miles of actual distance. Suppose the distance between two cities on the map is 7 inches. What is the actual distance between the two cities? Write the rule you used to find the actual

    asked by lia on March 13, 2016
  83. physics

    a point moving on a straight line traversed half the distance with a velocity v0. the remaining part of the distance was covered with velocity v1 for half the time, and with velocity v2 for the other half of the time. find the mean velocity of the point

    asked by pavatharani on July 3, 2011
  84. math,help

    i need help with this one i've tried it many ways and still can't figure it out because it has the lines going between two solid lines. find the x-intercepts. y = x^2 +5x+2 x intercepts is when y is zero. 0=x^2 +5x+2 using formula 5/2 +- 1/2 sqrt (25-8)

    asked by jasmine20 on April 15, 2007
  85. physics

    The balance wheel of a watch oscillates with angular amplitude 1.7π rad and period 0.64 s. Find (a) the maximum angular speed of the wheel, (b) the angular speed of the wheel at displacement 1.7π/2 rad, and (c) the magnitude of the angular acceleration

    asked by kylie on January 9, 2011
  86. Math - More Precision and Significant Digits

    Please help me with the following problems: 3. Choose the more precise measurement. 6 cm or 2.5 cm I think it is 2.5 cm. Is this correct? 7. Choose the less precise measurement and explain why it is less precise. 2.8 mm or 3.79 mm I think the answer is

    asked by Brady on August 30, 2014
  87. Math- finding equation

    Can someone explain to me how to find the equation pf the line in the form Ax + By + C =0 if a) parallel to x=3 and passes through (-4, 3) b)perpendicular to y=4 and passes through (1, 1) c) passes through the x-int of y=2x-6 and y-int of y=-3x+6 If it is

    asked by thomas on February 8, 2007
  88. Math help Please

    Kevin has a triangle table cloth with side lengths of 5 inches, 12 inches. He wants to cover a right angles triangle table with table cloth. Find if the cloth is appropriate for the table. Can someone please help me. We are doing Pythagorean Theorem - I

    asked by Cassie on October 9, 2014
  89. Chemistry

    How do you calculate the molality of a salt solution using only temperature? Is it even possible to do so? This was part of an ice cream lab and the temperature of the ice was 1.0 degrees celcius and the temperature of the ice water salt mixture was -0.4

    asked by Jamie on April 20, 2015
  90. physic

    Find the force a 67.5 kg man would experience while standing in the surface of each of the following planets PLANET 1. EARTH 2. MARS 3. PLUTO Mass for earth 5.98 x 10^24 kg for mars 6.34 x 10 ^23 kg for pluto 5 x 10^23 kg distance distance for planet 6.337

    asked by Dulce on July 13, 2014
  91. physics

    A 1700 kg car moving south at 19.5 m/s collides with a 2050 kg car moving north. The cars stick together and move as a unit after the collision at a velocity of 5.16 m/s to the north. Find the velocity of the 2050 kg car before the collision. m/s to the

    asked by Maddie on November 14, 2013
  92. Algebra

    A boat company charges a flat fee of $35.00 plus $7.25 per hour to rent a boat. Another company charges a fee of $29.00 plus $10.50 per hour to rent the same boat. Find the number of hours for which the costs are the same. Round your answer to the nearest

    asked by Anonymous on October 6, 2016
  93. Chemistry

    Okay, so I have to find the percent of water in each solution, but it involves different reagents and I'm not sure how to figure it out. Here's one example: Add all together - 4 mL water 2 mL of 0.01 M aqueous NaOH 2 mL acetone 2 mL 0.1 M alkyl halide in

    asked by Sam on February 9, 2012
  94. Physics

    A hiker starts at his camp and moves the following distances while exploring his surroundings: 65.0 m north, 2.00 ✕ 102 m east, 1.10 ✕ 102 m at an angle 30.0° north of east, and 1.50 ✕ 102 m south. (a) Find his resultant displacement from camp.

    asked by Biggz on September 5, 2015
  95. Calculus

    Determine whether Rolle's Theorem can be applied to f on the closed interval [a,b]. If Rolle's Theorem can be applied, find all values of c in the open interval (a,b) such that f'(x)=0. f(x) = x^(2/3) - 1 [-8,8] I plugged in both values and found out that

    asked by Maddie on September 26, 2013
  96. Mathematics

    A loan of $7,000,000 is being amortised over 48 months at an interest rate of 12% compounded monthly. Find: (a) the monthly payment; (b) the principal outstanding at the beginning of the 36th month; (c) the interest in the 36th payment; (d) the principal

    asked by Gibbons on June 22, 2010
  97. physics

    A child of mass m swings in a swing supported by two chains, each of length R. The mass of the swing’s seat is negligible. If the tension in each chain at the lowest point is T, find: 4.1 the child’s speed at the lowest point; 4.2 the force exerted by

    asked by Tadie on April 19, 2018
  98. Mathematics

    A loan of $7,000,000 is being amortised over 48 months at an interest rate of 12% compounded monthly. Find: (a) the monthly payment; (b) the principal outstanding at the beginning of the 36th month; (c) the interest in the 36th payment; (d) the principal

    asked by Gibbons on June 22, 2010
  99. Physics Question

    Find the escape speed from (a) the Sun, (b) a white dwarf star with one solar mass (same as the Sun) and radius 10,000 km, (c) a neutron star of 2.0 solar masses and radius of 10.0 km, and finally (d) a star with 2 solar masses and radius 5930 m. Comment

    asked by Anon on November 11, 2016
  100. Discreet Mathematical Structures

    Use proof by contraposition to prove the following statement: If A is the average of two positive real numbers then one of the two numbers is greater than or equal to A. Proof. Domain: positive real numbers P: A=(x+y)/2 Q: x is greater than or equal to A

    asked by Anna on October 7, 2010

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