Newest questions posted by Leah
  1. Physics

    The maximum velocity and acceleration of a particle executing SHM about its equilibrium position are 4.0m/s and 64.0m/ss respectively. If the acceleration of the particle is -64.0m/ss at t=0. Write an expression for the velocity of the particle as a
  2. 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
  3. Chemistry

    If you want to lose 5 pounds of body fat which is 15percent water, how many kilocalories do you need to expend?
  4. Physics AP

    An object is moving in a circle with a radius of 1.44m. The object is rotating with period of .255 seconds. How many revolutions does the object make in 197.0 seconds?
  5. Physics

    A tetherball apparatus consists of a ball attached to a 2.10 m rope that is attached in turn to the top of a 3.10 m tall pole. The ball is struck such that it moves horizontally around the pole. Immediately after the ball is struck, it moves at 5.57 m/s,
  6. Ethics and philosophy

    I have to write how Martin Luther King is inspirational, must include: 1. Date of birth,childhood, education, job, family. 2. How are they inspirational? What have they done in their life you admire?
  7. Physics or Math (Please Help!)

    The top of the pool table is 2.80 ft from the floor. The placement of the tape is such that 0 feet aligns to the edge of the table (as shown). The winner of the competition wants to know if he has broken the world record for the break shot of 32 mph. His
  8. Physics

    A gps tracker at their base camp shows the location of the first team as 38 km away, 23° north of west, and the second team as 34 km away, 31° east of north. When the first team uses its gps to check the position of the second team, what does it give for
  9. Math

    Cells in an embryo double every hour. If an embryo has 6 cells to begin with, write an expression for the number of cells after n hours
  10. math

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

    4+2(exponent 5) divided by 9. Add parentheses to make each expression equal 4
  12. 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
  13. 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:
  14. 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)
  15. 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

    u have been a great help thanks 100% more helpful than anyone i have met today
  17. 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
  18. Math- integers

    Explain the meaning on 0 : a decrease of 250 attendees

    I have 9 digits. My ten millions digit is a 0 and is 8 less than my hundreds digit. My hundred millions digit is 1 less than my thousands digit, 8 more than my millions digit, twice my ten thousands digit, and 4 times my hundred thousand digit. My digits
  20. Math- enqualities

    Jay is creating a playlist and needs at most 180 minutes worth of music. He currently has 45 minutes. How many more minutes of music does Jay need to include in the playlist?
  21. Math

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

    On a random day in the spring 88% of the students are present at school.If there are 528 students presents how many total students are enrolled?
  23. stats

    4. One measure of form for a runner is stride rate, defined as the number of steps per second. A runner is considered to be efficient if the stride rate is close to optimum. The stride rate is related to speed; the greater the speed, the greater the stride
  24. 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
  25. 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
  26. Stats

    Grey Kangaroos are large, social marsupials, indigenous to Australia. The Eastern Greys are a light grayish brown, while the Western Grey is a copper brown color. As part of a study of the development of these creatures, biologists have measured various
  27. science

    Compare the costs and benefits of hydropower to that of geothermal power. (Please include two costs and two benefits.)
  28. 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
  29. math

    Shortly after metric units were introduced in Australia, a group of 44 students was asked to guess, to the nearest meter, the width of the lecture hall in which they were sitting. The true width of the hall was 13.1 meters. Please find the mean of the
  30. AP statistics

    A group of students were asked to guess the width of the room in feet, measured to the nearest foot (1 meter = 3.28 feet, to 2 decimal places). Construct a back to back stemplot from these two datasets. How will you overcome the problem that different
  31. history

    Cyril and Methodius were missionaries to the Slavs who A.translated the Bible into the new alphabet written for the Slavic language B. were excommunicated by Pope Gregory II for their Slavic writings supporting icons C.were iconoclasts who spoke out
  32. 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
  33. math

    Write the first five terms of the sequence defined recursively. Use the pattern to write the nth term of the sequence as a function of n. (Assume that n begins with 1.) a (subtext) 1 =4,a (subtext) (k+1) =−a (subtext) k a. a (subtext) n =4(−1)^n−1 b.
  34. math

    Determine whether the sequence is geometric. If so, find the common ratio. 2, –6, 18, –54,... a. −1/3 b. 3 c. not geometric d. 2 e. –3
  35. 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
  36. Math

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

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

    The mean of a set of twelve numbers is 5.5. The mean of another set of eight numbers is k. The mean of the combined set of 20 numbers is 8.5. Find the value of k
  39. 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
  40. 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?
  41. algebra

    Goran invested his savings in two investment funds. The amount he invested in fund A was$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
  42. algebra

    Two cars leave town 150 kilometres apart at the same time and travel toward each other. One car's rate is 18 kilometres per hour more than the others. If they meet in 3 hours, what is the rate of the faster car ?
  43. math

    We consider the non-homogeneous problem {y''-16y} = {256x^{2}} First we consider the homogeneous problem {y''-16y} = 0 : 1) the auxiliary equation is a r^2+br+c = =0 . ________________ 2) The roots of the auxiliary equation are (enter answers as a comma
  44. Math

    The scale drawing to the right shows the first floor. The actual dimensions of the garage are 20 ft by 25 ft. ( Scale is 1 by 1 1/4) . How many ft does each inch represent? The whole thing is a little confusing, any tips however?
  45. Math

    find the derivative of x^3-6x^2+15x+8 and show by completing the square that function has no turning point. I can find derivative but not sure of next step
  46. Math

    What is the simplified form of this expression? m^9t^-10/m^-4t^-5 m^13/t^15 m^5t^5 m^13/t^5 m^-13t^-15 I think it's the third, but I'm not sure if that's correct. I would appreciate if someone could show me how to solve it if it's incorrect.
  47. Math

    What is the simplified form of this expression? m^9t^-10/m^-4t^-5 m^13/t^15 m^5t^5 m^13/t^5 m^-13t^-15 I think it's the third, but I'm not sure if that's correct. I would appreciate if someone could show me how to solve it if it's incorrect.
  48. Math

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

    What is the final price of a textbook that costs $107.20 with an added tax rate of 6%?
  50. math

    Charles work a total of 30 hours last week. he worked 10 hours on Monday. what fraction of his work hours for the week did he complete on Monday?
  51. Physics

    The Earth exerts an 640 N gravitational force on a man. What force does the man exert on the Earth? Answer in units of N.
  52. English(Poetry)

    What is prose paraphrase, and how do you do it to a poem?
  53. Physics

    A 31.9 N object is in free fall. What is the magnitude of the net force which acts on the object? Answer in units of N.
  54. Precalculus

    Given cosθ=3/7 and 0≤θ≤π/2 find sinθ and tanθ
  55. Math

    Consider a large water tank: If 3900L occupies 3/4 of the total capacity of the tank, how much water will the tank hold when it is full?
  56. 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
  57. English 10 A

    Has anyone took the "alone, The nobel prize , First Frost" quiz? if so please help thank you so much!! i will try to help in return.
  58. 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
  59. English for Academic purposes

    What are the main reasons for a wave of discontent
  60. Math (Solving Equations)

    Find all solutions (answers should be given in simplified form). Some answers may involve the number i. *I will use lowercase l to represent absolute value lines.* 3 lx-1l + 4 = 19 We've never really worked with absolute value in solving equations before.
  61. 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
  62. Physics

    A pendulum with a length of 1.25m has a period of 2.2s. What is the value of g?
  63. 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
  64. 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
  65. 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
  66. Geometry

    Four friends order a 12 inch diameter pizza to share equally. how much pizza does each receive?
  67. science

    A ball is thrown upward from the ground with an initial speed of 16.0 m/s; at the same instant, another ball is dropped from a building 12 m high. After how long will the balls be at the same height above the ground?
  68. physics

    An athlete leaves one end of a pool of length L at t = 0 and arrives at the other end at time t1. She swims back and arrives at the starting position at time t2. If she is swimming initially in the positive x direction, determine her average velocities
  69. physics

    A person walks first at a constant speed of 5.10 m/s along a straight line from point circled A to point circled B and then back along the line from circled B to circled A at a constant speed of 3.15 m/s.(a) What is her average speed over the entire trip?
  70. english

    How do I fix this sentence to create parallel structure? The university is one of the largest employers in the community, bring in substantial business, and the cultural impact is also big.
  71. social studies

    1)An interest rate is a special type of? a. loan b. price c. bank d. service 2) How does a compound interest rate differ from a simple interest rate? a. Compound interest rates pay more interest over time b. Compound interest rates are calculated only once
  72. Vocabulary

    Can you use the following words in a sentence Infirmity Implication Infringe Succinct Sparse Innovation Revitalize Subjective Inequity Deterrent
  73. physics

    with what speed does a hammer dropped from a height of 23 m strike the ground?
  74. physics

    A robot arm expends 15J of work to extend a spring 10cm from its equilibrium position. How much force is required?
  75. physics

    How much work is required to extend an exercise spring 15cm if the spring constant is 800N/m?
  76. 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
  77. 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
  78. 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
  79. Bio AP

    Where does a g-protein bind to a receptor cell and what is it's function?
  80. 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?
  81. math

    Find the critical numbers of the function f(x) = x^{1/4}-x^{-3/4}.
  82. math

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

    I need help with these. I'm so confused! Thanks! 1.) An F-14 Tomcat fighter jet goes from rest to a speed of 75m/s in 2.5 s. What is the acceleration? 2.) Preston tossed a red ball upward and it reaches a maximum height of 3.0m What is the final velocity
  84. Math

    32x+36y+16=0 36x+32y+16=0 Find x and y
  85. Math

    A projectile is shot upward from the earth with an initial velocity of 320 ft/sec. (a) What is the velocity after 5 secs.? ft/sec. (b) What is the acceleration after 3 secs.? ft/sec^2.
  86. 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
  87. Math

    If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t) = 48+80t-16t^2 What is the velocity of the ball when it hits the ground?
  88. Math

    Assume that f is a continuous function from the real numbers to the real numbers such that for all numbers x,y, and a it is true that f(x+y)=f(x) + f(y) and that f(ax)=af(x). Further assume that f(1) = pi. Find f'(-1). Please explain your reasoning. I am
  89. Math

    A street light is at the top of a 17 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 8 ft/sec along a straight path. How fast is the tip of her shadow moving when she is 30 ft from the base of the pole? Must be accurate to fifth
  90. 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
  91. Math

    Water is leaking out of an inverted conical tank at a rate of 0.0109 {\rm m}^3{\rm /min}. At the same time water is being pumped into the tank at a constant rate. The tank has height 9 meters and the diameter at the top is 4.5 meters. If the water level is
  92. Chemistry

    I'm really confused about how to do these two problems. Please help me. What is the amount of heat (kJ) required if 64.0 kg of H2O is heated from 25°C to 85°C? 200.0 g Al (C = 0.900 J/g × °C) at 95°C is added to 85.4 g H2O at 25°C. What is the final
  93. 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.
  94. Grammar

    Many stories about the first Valentine's Day exist.. What is the simple subject?
  95. Grammar

    Valentines Day has an interesting history? What is the simple subject?
  96. reading

    what is another word for things?
  97. science

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

    what year were england and romans invaded?
  99. math

    Finance charge was 5.58 on a monthly balance of 318.76. What is the rate?
  100. college chem

    You are instructed to create 400. mL of a 0.40 M phosphate buffer with a pH of 6.9. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter all numerical answers to three significant figures.) H3PO4(s) + H2O(l)


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