Popular questions and responses by leah
  1. Math

    An Aircraft Flies Round A Triangular Course. The First Leg Is 200km On A Bearing Of 115km And The Second Leg Is 150km On A Bearing Of 250km. Draw A Diagram For This

    asked on March 9, 2017
  2. Mathematics

    M partially varies as N and P is constant when M=2,N=3,when M=4,and N=2.find M,when N=1

    asked on August 6, 2020
  3. Physics

    A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit.

    asked on May 13, 2012
  4. math

    An ostrich farmer wants to enclose a rectangular area and then divide it into 4 pens with fencing parallel to one side of the rectangle. There are 720 feet of fencing available to complete the job. What is the largest possible total area of the 4 pens?

    asked on October 28, 2014
  5. Math

    The pressure, P (in lbs/ft2), in a pipe varies over time. Three times an hour, the pressure oscillates from a low of 88 to a high of 254 and then back to a low of 88. The pressure at t=0 is 88. Find a possible cosine formula for P=f(t), where t is time in

    asked on November 2, 2014
  6. math

    A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) is

    asked on July 17, 2011
  7. Math

    For this problem, a person standing on the edge of a cliff throws a rock directly upward. it is observed that 2 secs later the rock is at its maximum height (in feet) and that 5 secs after that (meaning 7 seconds after being thrown) the rock hits the

    asked on October 7, 2014
  8. Math

    How would you solve this word problem in one variable inequality form? One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend minutes. Another company offers a plan that costs $19.99 and charges 35 cents per minute

    asked on September 25, 2013
  9. Simplex Method

    Solve the linear programming problem by the simplex method. Maximize P = 10x + 6y subject to x + y < 80 3x < 90 x > 0, y > 0 x = y = P =

    asked on April 24, 2011
  10. Math (Elementary Algebra)

    What is the value of the expression 2x^2 + 3xy - 4y^2 when x = 2 and y = -4 ? Please help this is for my accuplacer. If you could show your work explaining how you got the answer that would be awesome. Thank you in advance

    asked on April 18, 2016
  11. English 4

    Which of the following most distinguishes an epic from a mock epic? A. its subject matter B. its style C. its vocabulary D. its length I'm thinking its B.

    asked on September 6, 2012
  12. simplex Method

    Solve the linear programming problem by the simplex method. Maximize P = 5x + 4y subject to 3x + 5y < 78 4x + y < 36 x > 0, y > 0 x = y = P =

    asked on April 24, 2011
  13. Math

    If he divides his land into square fields that are 1/3 mile long and 1/3 mile wide how many fields will he have

    asked on September 19, 2018
  14. English

    Identify the term that best describes the words/phrases in parentheses. 1. The teacher asked her pupils to (stay) put during the screening of the documentary. linking verb action verb 2. The committee judged the logo (the most appropriate symbol) for the

    asked on January 23, 2013
  15. math

    a marine biologist wants to know the vertical distance a dolphin traveled during a jump.with the surface f the water being zero , it started under water at -35 feet, jumped up and out of the water to 27 feet. and returned to the water at -18 feel. what is

    asked on November 4, 2018
  16. Social Studies

    Why did Korea and Japan choose a policy of isolationism? * a.They were following Chinese policies toward foreigners. b.They thought that foreign goods were of inferior quality. c.They felt that foreigners threatened their independence. d.They were occupied

    asked on January 4, 2017
  17. health

    Visiting your doctor for regular check-ups is an example of which step you might take to meet take to meet your health goals? A. gain awareness. (B). gain knowledge. C. build health skill. D. set goals.

    asked on September 10, 2014
  18. chemistry

    The complete combustion of propane, C3H8(g), is represented by the equation: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l) ΔH° = -2220 kJ How much heat is evolved in the complete combustion of 20.0 L C3H8(g) at STP?

    asked on May 14, 2014
  19. math

    A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) under this transformation is

    asked on July 18, 2011
  20. physics

    Hans uses a wheelchair. Although he has a rampto in his house, he finds it difficult to get his wheelchair up the ramp. Whcih modification would make it easier for Hans to get in his house? a. increase the length of the ramp b. increase the friction

    asked on February 23, 2010
  21. Chemistry - Acids/Bases

    What kinds of compounds are typically strong bases? (More than one may apply.) *hydroxides of group IIIA (13) metals *conjugate bases of strong acids *hydroxides of group IA (1) metals *hydroxides of transition metals *hydroxides of group IIA (2) metals

    asked on May 9, 2015
  22. math

    A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were

    asked on April 16, 2015
  23. geometry

    Indicate the equation of the line through (2, -4) and having slope of 3/5.

    asked on July 7, 2011
  24. math

    Write the first five terms of the sequence. (Assume that n begins with 1.) a (subtext)n =−7n+8 a. 8, 1, –6, –13, –20 b. 1, –6, –13, –20, –27 c. 1, –14, –21, –28, –35 d. 1,9,17,25,33 e. –15, –22, –36, –36, –43

    asked on August 27, 2016
  25. Math

    How to solve: 4d^4w^3*6dw^4/3d^3w*8dw^2

    asked on June 22, 2016
  26. math

    what is the missing value to the nearest hundredth? tan [] = 12 I really need some help. I don't understand this :(

    asked on May 24, 2016
  27. Physics

    Suppose the block is released from rest with the spring compressed 5.50 cm. The mass of the block is 1.60 kg and the force constant of the spring is 965 N/m . Assume the surface is frictionless. A) What is the speed of the block when the spring expands to

    asked on May 26, 2013
  28. Physical Science

    When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the efficiency of the pump?

    asked on November 3, 2012
  29. science

    Mendel performed his experiments on more characteristics than the four shown in the Mendel’s Results table. Why was it important for him to look at more than one characteristic?

    asked on June 28, 2020
  30. Algebra

    The rectangle shown has a perimeter of 118 cm and the given area. Its length is 4 more than four times its width. Write and solve a system of equations to find the dimensions of the rectangle. (rectangle has an area of 528 cm^2) The length of the rectangle

    asked on November 7, 2019
  31. Geometry

    Find the area of the rectangle with the given base and height. 11ft, 3 in I think answer is 33 ft squared but not sure if it isn't please tell me the correct answer and how you got it

    asked on September 15, 2019
  32. MATH

    A conveyor belt sushi restaurant lets you choose what you want to eat from variously-coloured plates that go by. You pay based on the colours of the plates. After dinner, 1 green plate, 4 yellow plates, and 2 blue plates. Use the Fundamental Counting

    asked on May 10, 2014
  33. Foundations Math 12

    48 weeks ago, Gabriella invested at 3.9% interest, compounded weekly. Today, her investment is worth $225.50. How much interest has Gabriella's account earned in the past 48 weeks?

    asked on February 16, 2014
  34. Math

    What would the equation look like when the line is parallel to y= 3/4x-3 and has a Y-intercept of 3

    asked on November 20, 2013
  35. Physics

    A heavy-duty stapling gun uses a 0.162-kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 32657 N/m). The mass of this spring may be ignored. Squeezing the handle of the gun first

    asked on November 13, 2011
  36. geometry

    In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.

    asked on July 6, 2011
  37. simplex Method

    A company manufactures two products, A and B, on two machines, I and II. It has been determined that the company will realize a profit of $3/unit of product A and a profit of $4/unit of product B. To manufacture 1 unit of product A requires 6 min on

    asked on April 24, 2011
  38. geometry

    Two circles of equal radius intersect each other such that each circle passes through the center of the other circle. Find the equation for the perimeter of this figure.

    asked on February 1, 2011
  39. math

    The maturity value of a $28,000, 6%, 60-day interest-bearing note on August 6 is

    asked on April 8, 2017
  40. Algebra

    In a plan for area​ codes, the first digit could be any number from 2 through 8, the second digit was either 0 or 1​, and the third digit could be any number except 0. With this​ plan, how many different area codes were​ possible? My answer:

    asked on March 6, 2017
  41. Social Studies

    1.How did the Portuguese use geographic factors to help them control the spice trade? * a.They conquered inland kingdoms, which they turned into a trading empire. b.They used force and diplomacy to set up coastal trading posts and seize key ports around

    asked on January 4, 2017
  42. Math- integers

    Explain the meaning on 0 : a decrease of 250 attendees

    asked on January 4, 2017
  43. Math

    12a-3b2. When a=9 b=4. Please explain steps

    asked on November 2, 2016
  44. stats

    2. The modern Olympic Games are a modified revival of the Greek Olympian Games that came to be largely through the efforts of the French sportsman and educator Baron Pierre de Coubertin. The Games are an international athletic competition that has been

    asked on September 30, 2016
  45. algebra

    Goran invested his savings in two investment funds. The amount he invested in fund A w!@#$%^&2000 less than the amount he invested in fund B. Fund A returned a 3% profit and fund B returned a 2% profit. How much did he invest in fund A, if the total profit

    asked on April 5, 2016
  46. Math

    She has one board that is 3m7cm long and another board that is 3m 91cm find the total length of he two boards in meters

    asked on November 23, 2015
  47. Math

    A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be removed when the radius is 5 cm? Must be accurate to the 5th decimal place. It seems like an easy question but no matter how many

    asked on October 5, 2014
  48. chemistry grade 11

    A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

    asked on September 21, 2012
  49. Chemistry 1

    I have trouble understanding ratios and relativity so I can't understand how to use atomic mass units. Here is an example from my book: How many grams of iron would contain the same number of iron atoms as the number of carbon atoms contained in 1.000 g of

    asked on September 11, 2010
  50. Physics

    If a bobsled with a total mass of 250kg, reaches the bottom of the hill at a speed of 92mph, how tall was the hill?

    asked on March 1, 2010
  51. chemistry

    Mare is preparing an experiment using 3 cups, one made of paper, one of plastic and one of glass. She plans on pouring 50 ml of hot water from a pitcher into each of the 3 cups and record the temperature in 5 minute intervals. What is the independent

    asked on February 23, 2010
  52. Calculus (for Business)

    Suppose a fish swimming a distance of L ft at a speed of v fit/sec relative to the water against a current flowing at the rate of u ft/sec (uu+ and interpret your result b) Evaluate the limit of E(v) as v-->infinity and interpret your result

    asked on February 6, 2010
  53. math

    my daughter needs help finding a mystery number. 1)when the mystery number is divided by 3,there is a remainder of 1. but it has to be the same thing over again with 4 remainder 2 and 5 remainder 4.And there is one more what is the smallest number that

    asked on December 14, 2009
  54. Medical Physics

    A 18000kg airplane lands with a speed of 77 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by nonconservative forces in stopping the plane. I have an exam on this tomorrow and I am confused any help would be appreciated.

    asked on October 13, 2009
  55. University Physics

    A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28degrees above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively.

    asked on September 28, 2009
  56. math

    An architect is designing a circular opening 16 feet in diameter to make room for a spiral staircase. If pi = 3.14, what will the circumference of the circular opening be? 50.24 feet

    asked on October 9, 2019
  57. math

    Use an algebraic equation to find the measures of the two angles described below. Begin by letting x represent the degree measure of the​ angle's supplement. The measure of the angle is two times greater than its supplement.What is the measure of the​

    asked on September 17, 2019
  58. Math

    A sixth number will be added to the list. What must it be in order for the mean to be 12? (Use algebraic equation to help)

    asked on February 21, 2017
  59. Stats

    The data below were gathered on a random sample of 5 basking sharks, swimming through the water and filter-feeding, i.e. letting the water bring food into their mouths. Body Length (meters) Mean Speed (meters/seconds) 4 0.89 4.5 0.83 4 0.76 6.5 0.94 5.5

    asked on September 30, 2016
  60. history

    Step 1: Choose four of the following questions to ask Moses, Jesus, and Muhammad: Why is the Holy Land an important site for your faith? What is your perspective or feelings about the other monotheistic faiths? What is the holy book of your faith, and how

    asked on September 2, 2016
  61. math

    Write the first four terms of the geometric sequence with the given properties. a = 5 , r = 14 a. 5/68 b. 5/71 c. 5/16 d. 5/48 e. 5/64 f. 5 g. 5/4 identify one or more choices that answer the question

    asked on August 27, 2016
  62. Elementary Statistics

    SAT math test scores for all students taking the test are approximately normally distributed with mean score of 514 and std. deviation of 118. What is the probability that a randomly chosen student will earn a score above 600 on their SAT math test?

    asked on April 16, 2016
  63. Math

    How can I show 1/3x+10=3/5x as or in a real world problem??

    asked on February 8, 2016
  64. math

    The volume V of a pyramid varies jointly as its height h and the area of its base B . Given that the volume of the pyramid is 60 cubic inches when the height is 5 inches and area of its base is 36 square inches, what is the area of the base if its volume

    asked on October 19, 2015
  65. Math (Solving Equations)

    Find all solutions (answers should be given in simplified form). Some answers may involve the number i. (x^2/6) - (2x/3) = 3 + (x/2) I turned (2x/3) into (4x/6) and subtracted it from (x^2/6) to get: x(x-4) / 6 I turned 3 into 6/2 and added it to (x/2) to

    asked on May 17, 2015
  66. statistics

    A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were

    asked on April 16, 2015
  67. physics

    A 75 kg pilot flies a plane in a vertical loop. At the top of the loop, when the plane is completely upside-down for an instant, the pilot hangs freely in the seat and does not push against the seat belt or seat. The airspeed indicator reads 120 m/s. What

    asked on November 20, 2014
  68. Calculus

    find the intervals on which f(x) is increasing and decreasing along with the local extrema. f(x)=x^4 + 18x^2 I took the derivative and got: f'(x)= 4x^3 + 36x When I set this to zero, I get the imaginary number 3i. I can't get test values for an imaginary

    asked on November 3, 2014
  69. math

    Find the critical numbers for f=5+10x-x^{2} in the interval [-3,3].Also find the minimum and maximum.

    asked on October 20, 2014
  70. Math

    32x+36y+16=0 36x+32y+16=0 Find x and y

    asked on October 15, 2014
  71. reading

    what is another word for things?

    asked on August 19, 2014
  72. science

    can you please help me find 3 good science experiment? for the science fair....

    asked on August 19, 2014
  73. Physics

    a 40kg girl and a 30kg boy face each other on friction free roller skates. the boy pushes the girl,

    asked on May 19, 2014
  74. MATH

    A hockey game is preparing for a group photo. The team has 1 goalie, 4 defense, and 7 forwards. The photographer wants two rows of six players. How many ways can the team arrange six players in the front row with at most 2 defense?

    asked on May 11, 2014
  75. Math

    Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 6.The price for x pounds of cheese at $6.99 per pound (LINEAR FUNCTION) 7. A car accelerating on the highway to reach a speed of 62 mph

    asked on October 30, 2013
  76. Math

    Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION)

    asked on October 30, 2013
  77. Math

    Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 6.The price for x pounds of cheese at $6.99 per pound (LINEAR FUNCTION) 7. A car accelerating on the highway to reach a speed of 62 mph

    asked on October 30, 2013
  78. Math

    Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION)

    asked on October 30, 2013
  79. math

    Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?

    asked on October 1, 2013
  80. MATH


    asked on April 10, 2013
  81. Physics

    You are standing on top of a building that is 75-m high and you throw a 4-kg stone horizontally at a speed of 6.6-m/s. How far from the base of the building will the stone land? (the ground is flat)

    asked on March 6, 2013
  82. Chemistry

    Need help on a lab results write-up. The lab is the synthesis and analysis of a transition metal complex. General reaction was stated as: Fe(III) + x(acac) -> Fe(acac)x - we were to determine x by completing experiment. x = 1, 2, 3, 4... acac = 2, 4

    asked on February 14, 2013
  83. Chemistry

    what are the products when water,ferric chloride and ammonium thiocyanate are combined?

    asked on January 27, 2013
  84. Physics

    A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s

    asked on November 11, 2011
  85. Accounting

    purchased dental equipment at 15,000 and invested cash of 500,000

    asked on July 17, 2011
  86. math

    Indicate the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5).

    asked on July 8, 2011
  87. HELPPP

    Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0

    asked on April 18, 2011
  88. Please help! (Calculus)

    Solve initial value problem explicitly: 1. y'= ye^-x, y(0)=1 2. y'= 5xe^-y, y(1)=1

    asked on February 2, 2011
  89. math

    how many times must the number 5 be subtracted to find the quotient of 5/5?

    asked on February 2, 2011
  90. Math

    Are the differential equations separable or not? 1. y'= ye^(x+y) 2. y'= ye^(xy) 3. y'= y(xcos(y)) If they are, could you show how? Any help, even on one, would be extremely appreciated!

    asked on February 2, 2011
  91. Chemistry

    For Carbon dioxide, for a volume of 500 mL and temperature of 100 degrees celcius, calculate the pressures using the ideal gas law and the van der Waals equation. Explain any dicrepancies in the calculated values. Ideal Gas Equation: Van Der Waals Equation

    asked on November 1, 2010
  92. Chemistry

    The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?

    asked on July 19, 2010
  93. physics

    The charges of two identical aluminum speheres are -24uC and +4.0uC. The spheres are brought together so they simultaneously touch each other. They then separated and placed on the X-axis. What is the net force exerted b one sphere on another after

    asked on April 29, 2010
  94. Spanish

    how would you answer this question with affirmative commands and a direst object pronoun? Leo el libro de la historia de Oaxaca? Visito los museos? Compro la chaqueta? Escribo cartes? Compro el video sobre Monte Alban?

    asked on April 18, 2010
  95. Spanish

    I need to create a sentence to tell the following people's opinions. Tu / que / es aburrido(a) Yo / Que / es emocionante Nosotros/ que / es important para la ciudad. Los maetros/ que / es interesante Mi amigo(a) / que / es divertido(a)

    asked on April 18, 2010
  96. English

    5. Sarita's party takes place at night and all the villagers are gathered there. How do these details help make the party a good setting for the stranger to accomplish his goal? (1 point) * He can arrive and escape without people seeing him. * It will take

    asked on March 18, 2010
  97. Physics

    An object is placed on an inclined plane which forms an angle B = 18º with the horizontal. An external force F of magnitude 14.3 N is applied to the object. The force F acts in a direction which forms an angle A = 62º with the horizontal. As a result of

    asked on November 17, 2009
  98. literary

    what is foreshadowing and what is flashback?

    asked on October 12, 2009
  99. Physics

    The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. Suppose the archerfish squirts water with a speed of 2.45 m/s at an angle of 53.0 degrees above the horizontal, and aims

    asked on September 15, 2009
  100. physics!

    The mass of an automobile is 1160kg, and the distance between its front and rear axles is 2.54m. The center of gravity of the car is between the front and rear tires, and the horizontal distance between the center of gravity and the front axle is 1.02m.

    asked on January 5, 2008


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