Questions Asked on
March 6, 2016

  1. Language Art's

    2. An example of literal description in the poem is (1 point) A.)The sun brightening valleys. B.)An audience being moved by a speech. C.)the words of the president being relevant for a long time. D.)shadows falling over the land.

    asked by #FreeGucci
  2. Algebra

    A squash patch currently has 120 lbs of butternut squash. For each additional day in the patch, the amount of butternut squash increases by 6 lbs. If the price of butternut squash is currently 80 cents per pound, but it decreases by 2 cents each day, how

    asked by Vio
  3. statics counting methods

    With a short time remaining in the day, a fedEx driver has time to make deliveries at three locations among the eight locations remaining. How many different routes are possible? did i do it right 8/3= 2.67

    asked by calvin
  4. English

    Could I get some check on my answers? Read these lines from Macbeth: The west yet glimmers with some streaks of day: Now spurs the lated traveller apace, To gain the timely inn; and near approaches The subject of our watch. Which of the following correctly

    asked by Henry
  5. Physics

    A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth? (the polar radius of the earth is 6357 km)

    asked by Anonymous
  6. Algebra

    A motorboat that travels with a speed of 20 km/hour in still water has traveled 36 km against the current and 22 km with the current, having spent 3 hours on the entire trip. Find the speed of the current of the river.

    asked by Anish Panda
  7. math

    the price of wheat is decreased by 25% and its consumption increased by 25% find the new expenditure as ratio of initial expenditure

    asked by radhe
  8. Physics

    forty 2.0 kg blocks 20.0 cm thick are used to make a retaining wall in a backyard. Each row of the wall will contain 10 blocks. you may assume that the first block is the reference level. How much gravitational potential energy is stored in the wall when

    asked by AlphaPrimes
  9. English

    I thought it was C for this Victor Frankenstein recounts the influences that lead to his great experiment: I feel exquisite pleasure in dwelling on the recollections of childhood, before misfortune had tainted my mind and changed its bright visions of

    asked by Henry
  10. MATH!

    Make a box-and-whisker plot of the data. 60,63,53,66,65,58,51,55,58,51,58,62,53,66,61,51,65,52,54,50

    asked by jai
  11. Math

    In trapezium PQRS, the sides PQ and SR are parallel. Angle RSP is 120 . and RS = SP = 1/3PQ. What is the size of angle PQR ?

    asked by Amitabha
  12. Algebra

    The area of a square is greater than the area of the circle by 12 cm². Find the length of the side of a square if the area of the circle is 36 cm².

    asked by Anish Panda
  13. Advanced Algebra

    Depreciation: A construction company purchases a bulldozer for $160,000. Each year the value of the buldozer depreciates by 20% of its value in the preceeding year. Let V sub n be the value of the bulldozer.(Let n=1 be the year the bulldozer purchase.) a.)

    asked by Gray
  14. physics

    A player kicks a football at an angle of 45 degree with initial speed of 20 metre per second a second player on the goal line 60 metre away in the direction of a kick start training to receive the ball at that instant find the constant speed of the second

    asked by eddy
  15. stats

    Suppose x has a normal distribution with sigma = 1.2. Find the minimal sample size required so that for a 95% confidence interval, the maximal margin of error E = 0.5.

    asked by Anonymous
  16. physics

    A 910kg object is released from rest at an altitude of 1200 km above the north pole of the earth. If we ignore atmospheric friction, with what speed does the object strike the surface of the earth?

    asked by Anonymous
  17. Math

    Makoto and his friends rolled two fair number cubes 500 times and recorded the sum of the numbers shown on the cubes each time. On 42 of the trials the sum was 10. What will be the probability that the sum of the numbers shown on the cubes is 10 when two

    asked by Matt
  18. CHEMISTRY HELP

    assume that 13.5g of AL react with excess HCl according to the following balanced equation, at STP: 2Al(s) + 6HCl(aq) ---> 2AlCl3 + 3H2(g) how mang liters of H2 at STP are produced?

    asked by Joe
  19. Math

    Nine actors audition for four different parts in a play. In how many ways can the play director fill these roles? A) 368,880 B) 15,120 C) 3024 D) 126

    asked by FutureSoldier
  20. English

    1. He won the first prize in the speech contest. 2. He won first prize in the speech contest. 3. He got the first prize in the speech contest. 4. He got first prize in the speech contest. ================== Are all the expressions grammatical? Do we have

    asked by rfvv
  21. Operations Management

    Consider the following system: -> 0.73 -> 0.73 -> Determine the probability that the system will operate under each of these conditions: (Round your final answers to 4 decimal places, not your intermediate calculations.) a.) The system as shown b.) Each

    asked by Grace
  22. 5a-2b=14 , 2a+2b=14

    Use the method of elimination to solve the following pairs of simultaneous equation 8y+4z=7 6y-8z=41

    asked by Gabriel
  23. Algebra

    The area of a circle is less than 1 dm². Find the radius of the circle.

    asked by Anish Panda
  24. Thermodynamics

    Methane gas, CH4, burns in air and releases 192 kcal/mol. Assuming a 90%-efficient heat transfer, what mass (in kg) of ice at -17.8C can be converted to water at 37.8C by burning 500 liters of methane measured at 20.56C and 1 atm?

    asked by Mech Student
  25. Probability

    Makoto and his friends rolled two fair number cubes 500 times and recorded the sum of the numbers shown on the cubes each time. On 42 of the trials the sum was 10. What will be the probability that the sum of the numbers shown on the cubes is 10 when two

    asked by K
  26. physics

    a galvanometer has a resistance 60 ohm and is of 5mA full scale deflection.how would you modify it so as to get 0-10V voltmeter

    asked by ruth
  27. physics

    Light is an electromagnetic wave and travels at a speed of 3.00 × 10^8 m/s. The human eye is most sensitive to yellow-green light, which has a wavelength of 5.72 × 10^-7 m. What is the frequency of this light?

    asked by leanne
  28. Maths, geography, life sciences and physical scien

    Identify three courses or study fields you are interested in following after grade 12.provide two reasons why you find this a suitable course for each choice

    asked by Daisy
  29. Science

    When two hydrogen atoms bond with one oxygen atom to form water, what happens to the electrons? A. Each hydrogen atom donates its electron to the oxygen atom. B. The oxygen atom donates an electron to ach hydrogen atom. C. A pair of electrons is shared at

    asked by Plz Help!
  30. math

    What is the volume of the cone in the picture if S = 5 and R = 3?

    asked by Grace
  31. chemistry

    how many grams of NaOH are needed to neutralize 50 grams of H2SO4?

    asked by kumera
  32. Chemistry

    A flask of hydrogen gas is collected at 1.023 atm and 35 degrees C by displacement of water at 35 degrees C is 42.2 mm Hg. What is the partial pressure of hydrogen gas in the flask? Not exactly sure where to start with this question, or what formula to

    asked by Ben
  33. History

    In 1840, the population of Chicago was only 4,470. By the 1900, the city's population was 1,698,575. Which factor best explains the population change? A.) African Americans escaping poverty and discrimination in the south B.) The expansion of Chicago's

    asked by jai
  34. Algebra

    One painter can finish a certain job 5 hours before another painter who is doing the same job. When they work together they can finish this job in 6 hours. How long does it take for each painter to do the job by himself?

    asked by Anish Panda
  35. algebra

    A tourist sailed against the current on a river for 6 km, and then he sailed in a lake for 15 km. In the lake he sailed for 1 hour longer than he sailed in the river. Knowing that the current of the river is 2 km/hour, find the speed of the boat while it

    asked by Anonymous
  36. LIFE ORIENTATION.

    five practical action to address human rights violation of xenophobia in my community.

    asked by BUSISIWE
  37. la

    2. Based on the context clues, what is the meaning of the word catalpa in Line 27 of the poem? (The poem is Almost Summer Sky by Jacqueline Woodson) Line 27: No, upstate they got maple and catalpa and scotch pine, A a location upstate B a species of

    asked by aly
  38. statics

    a basketball player makes 60% of the free throws that he attempts, except that if he has just tried and missed a free throw then his chances of making a second one go down to only 30%. what is the probability that he makes both attempts? what is the

    asked by zaranae
  39. history

    8.)How did westward expansion affect Native American tribes? A.)Railroad expansion allowed Native American hunters to sell bison meat & hides at higher rates than before B.)Railroad expansion brought U.S settlers in contact with bison, drastically reducing

    asked by Anonymous
  40. math

    If y=¡Ìsecx-tanx¡¡Ìsecx+tanx,show that dy¡dx=secx(tanx+secx)

    asked by Pratap
  41. physics

    A 500g trolly is placed on a runway that is tilted so that it makes an angle of 30 degrees to a horizontal table.A light inextensible string is attached to 150g mass piece.the trolly accelerates down the slope as a result of the force applied by the

    asked by sinethemba
  42. History

    Q: The Gadsden Purchase enabled the United States to do which of the following? A. Gain access to important natural resources in the Southwest B. Increase crop production in the Southwest C. Link to the Southwest by railway system D. Provide better

    asked by jai
  43. Science

    What is the balanced chemical equation for "solid calcium hydrogen carbonate reacts with hydrochloric acid solution producing carbon dioxide,water and calcium ions in solution?"

    asked by Anonymous
  44. chem

    Exercise 14.55 Consider the reaction: NiO(s)+CO(g)⇌Ni(s)+CO2(g) Kc=4000.0 at 1500 K When calculating the answer, do not round to the appropriate number of significant figures until the last calculation step. If a mixture of solid nickel(II) oxide and

    asked by Nevaeh
  45. math

    Irina asked five of her students how many of the five of them had studied the day before. Pol said none, Berta said only one, Ona said exactly two, Eugeni said exactly three and Gerard said exactly four. Irina knew that those students who had not studied

    asked by Amitabha
  46. maths

    The scale of a map is given as 1:40000000. Two cities are 4 cm apart on the map.Find the actual distance between them.

    asked by Anju Godvin
  47. chemistry

    what is the balanced chemical equation for "solid calcium hydrogen carbonate reacts with hydrochloric acid solution producing carbon dioxide,water and calcium ions solution"?

    asked by Anabeth
  48. math

    ABCD is a rectangle of perimeter 48cm. AB=6 cm and CD=DE. What is the length of ABCD?

    asked by teresa
  49. Life orientation

    Propose 6 practical actions that you can take to address human rights violations of xenophobia in Your community.

    asked by Sthabile
  50. statics counting methods

    suppose that you have 5 shirts, 3 pairs of pants, and 2 pairs of shoes that can all go together. Assuming that you pick 1 of each item to wear, how many outfits could you put together

    asked by calvin
  51. math

    7ft board is to be cut into three​ pieces, two​ equal-length ones and the third 99 in. shorter than each of the other two. If the cutting does not result in any length being​ lost, how long are the​ pieces?

    asked by Sam
  52. physics

    At 20°C, a brass cube has an edge length of 34 cm. What is the increase in the cube's surface area when it is heated from 20°C to 67°C?

    asked by Jim
  53. physics

    Muscles are attached to bones by means of tendons. The maximum force that a muscle can exert is directly proportional to its cross-sectional area A at the widest point. We can express this relationship mathematically as F~max= σA, where σ (sigma) is a

    asked by tom
  54. Calculus

    Starting at midnight, a 10 foot radius circular pond freezes inward from the outer edge at a rate of 4 inches per hour. How fast is the open area shrinking at when the radius is 9 feet? (Note: if I'd said "at 3am" instead of "when radius is 9 ft", this

    asked by Lela Mitevska
  55. trigonometric

    A person standing 600 ft from the base of a mountain measures the angle of elevation from the ground to the top of the mountain to be 25°. The person then walks 800 ft straight back and measures the angle of elevation to now be 20°. How tall is the

    asked by v a
  56. math

    The Jacobys went on a 600-mile trip. On the first day they drove 5 3/4 hours and on the second day they drove 4 3/4 hours. How many hours did they drive during the first two days?

    asked by Lynn
  57. Life orientation

    Six practical action that you can take to address human right violations of xenophobia in my community

    asked by Nombuyiselo
  58. Physics 12

    . A rope 2 metres long rests on a table where the coefficient of friction is 0.5. What minimum length of rope can stay on the table before the whole rope will slip off? a) 133 cm b) 80 cm c) 200 cm d) Cannot determine without more information. The answer

    asked by Harvey
  59. Life Orientation

    Write a report.Evaluate one organization you think is making useful contribution to our country in terms of addressing human rights violations.give at least 3 practical examples

    asked by Sinenhlanhla
  60. life orientation

    Five practical actions that you can take to address human right violations of xenophobia in your community

    asked by sanelisiwe
  61. L.O

    Propose 6 practical actions that you can take to address human rights violations of xenophobia in your community.

    asked by Sihle
  62. Physics

    A jet plane is flying at a constant altitude. At time t1=0 it has components of velocity Vx=90m/s, Vy=110m/s.At time t2=30.0s the components are Vx=-170m/s, Vy=40m/s.a).Sketch velocity vectors at t1 and t2.How do these two vectors differ?. For this time

    asked by Jack
  63. Chemistry

    12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.11 M C2H3O2-. What is the pH of the resulting solution? I understand to use the ice method, however, i do understand what to plug into the hh equation.

    asked by Lil
  64. Geometry

    A swimming pool is a rectangular prism. Estimate the volume of water in the pool in gallons when it is completely full (Hint: 1 gallon = 0.134 ft^3 ((feet cubed)) ). The density of water is about 8.33 pounds per gallon. Estimate the weight of the water in

    asked by Bree
  65. trigonometry

    A ship leaves its home port and sails on a bearing N38°15'E at 24 mph.At the same instant,another ship leaves the same port on a bearing S51°45'E at 28 mph.Find the distance between the two ships after 8 hours.

    asked by ymme
  66. English

    Which of the following options best demonstrates sentence fluency? A. The city looked beautiful in that it was lit by the sun which I was walking down the street. B. Walking down the street in the sunshine, the city looked beautiful. C. The city looked

    asked by Anonymous
  67. calc 1

    A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast is the boat approaching the dock when it is 4

    asked by feather
  68. Calculus / Rates of Change

    A jet flying due north at 16km/min passes 2 km directly above a plan flying due east at 8km/min. How quickly are they separating when the plane is 32 km from the crossover? What I have done (I am not sure if it is correct.): r^2=x^2+y^2+z^2 Since the plane

    asked by Jermaine
  69. Physics

    A small 0.50 kg object moves on a frictionless horizontal table in a circular path of radius 1.0 m. the angular speed is 5.8 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the

    asked by Max
  70. Math

    Jan is a 35-year-old individual who plans to retire at age 65. Between now and then $4000 is paid annually into her IRA account, which is anticipated to pay 5% compounded annually. How much will be in the account upon Jan’s retirement?

    asked by Steven
  71. Life orientation

    Identify three courses you are interested in following after grade 12 nd provide 2 reasons why you find this a suitable course for each choice

    asked by Lovedonia
  72. chemistry12_1

    Assuming air to be a mixture of gasses by volume of 20% oxygen and 80% nitrogen,(Both diatomic gasses), calulate the mass of 1dm cube of air at STP?.

    asked by Anonymous666
  73. Statistics

    Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. What percent of men are over 6 feet tall? Round to the nearest tenth of a percent. I understanf finding the z score, but I'm not sure how to find the

    asked by Anonymous
  74. Chemistry

    Exercise 14.55 Consider the reaction: NiO(s)+CO(g)⇌Ni(s)+CO2(g) Kc=4000.0 at 1500 K When calculating the answer, do not round to the appropriate number of significant figures until the last calculation step..

    asked by Nevaeh
  75. Chemistry

    12 mL of 0.0100 M HCl are added to 25.0 mL of a buffer solution that is 0.010 M HC2H3O2 and 0.11 M C2H3O2-. What is the pH of the resulting solution? I understand to use the ice calculations. I don't understand what to plug into the hh equation.

    asked by lil
  76. Algebra

    Depreciation: The purchase value of an office computer is $12500. Its annual depreciation is &1875. Find the value of computer after 6 years. Aritmetic Sequence

    asked by Gray
  77. Math (Help Please)

    1. Which of the following shows how this expression can be simplified? 2x + 6 + 3x − 4 A. x − 2 B. x + 2 C. 5x + 2 D. 5x − 2 2. Which is equivalent to the expression below? 7(2p − 1) A. 7p B. 14p − 1 C. 14p − 7 D. 14p − 8 3. Factor the

    asked by Don
  78. Math

    A father is 5 times as old as his son.In 4 years the sum of their ages will be 56.Find their present ages.

    asked by Fjona
  79. Chemistry

    Exercise 14.55 Consider the reaction: NiO(s)+CO(g)⇌Ni(s)+CO2(g) Kc=4000.0 at 1500 K When calculating the answer, do not round to the appropriate number of significant figures until the last calculation step. If a mixture of solid nickel(II) oxide and

    asked by Nevaeh
  80. Math

    A chain saw requires 7 hours of assembly and a wood chipper 3 hours. A maximum of 63 hours of assembly time is available. The profit of $190 on a chain saw and $220 on a chipper. How many of each should be assembled for maximum profit?

    asked by Caitlin
  81. geometry/algebra

    The algebraic expression of a dilation is (x, y) changes to (1/a x, 1/a y). If the dilation is an enlargement, give three possible values of a. Anything over 1 for the denominator would make the x and y values smaller. So what would the possible values be

    asked by Julia
  82. trig

    verify (csc^4-1)/cot^2x=2+cot^2x So this is what I have so far on the left side (csc^2x+1)(cscx+1)(cscx-1)/cot^2x =(csc^2x+1)(cot^2x)/cot^2x i think I'm doing something wrong. Please help!

    asked by Diana
  83. Math

    when the square of a number is increased by 10, the result is seven times the original number. find the number

    asked by Lily
  84. trigonometry

    At a certain time, a lighthouse is south of a ship. Thirty minutes later, the ship bears N40°20'E from the lighthouse. If the ship is sailing east at 20 kilometers per hour,find the distance of the ship from the lighthouse at each time of observation.

    asked by ymme
  85. Life orientation

    Identity 3 courses or study fields and provide 2 reason each

    asked by Seipati
  86. math

    a room is 26 m long and 15 meter wide a 14 m square carpet is laid on the floor what area is not carpeted

    asked by radhe
  87. Math

    Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. What percent of men are over 6 feet tall? Round to the nearest tenth of a percent. I understand finding the z score but I'm not sure how to find the

    asked by Anonymous
  88. trig/ellipse equation

    Find an equation of an ellipse satisfying the given conditions: Vertices: (-1, -8) and (-1, 4); and the length of the minor axis is 10.

    asked by jre
  89. maths

    The sum of two consecutive counting numbers divided by their positive difference is 9. Find the larger numbers.

    asked by anonymous
  90. Math

    An observer at point 0 sees airplane P directly over airport a. The observer measures the angle of the plane at 40.5. Find m

    asked by Ana
  91. English

    The nurse, who was late for work, put the manual into a large blue tote bag getting out of the car. Which of the following is misplaced in the sentence above? A. who was late for work B. getting out of the car C. into a large blue tote bag D. put the

    asked by Anonymous
  92. trig gauss jordan

    Write the augmented matrix, and then solve the system, using Gauss Jordan elimination on the augmented matrix. x + 2y - z = 4 -2x + y - 4z = -6 4x - 3y + 2z = -10

    asked by shawn
  93. math

    There are 24 students in a class. One student will be randomly selected as representative on the student council. if there are 9 boys and 15 girls in class, what is the probability that the representative will be a boy?

    asked by kim
  94. English

    I¡¯m worried about my grandmother. 1. Why don¡¯t you visit her often and talk with her? 2. Why don¡¯t you take her to hospital? 3. Why don¡¯t you take care of her? 4. Why don¡¯t you ask your parents to bring her to your apartment? 5. Why don¡¯t

    asked by rfvv
  95. linear equations

    Given: square root of 5 minus x is equals to x plus 1. Show that the solution to the above equation lies in the interval of negative 1less than or equals to x less than or equals to 5. Solve the equation. Solve the equation negative square root of 5 minus

    asked by Andiswa
  96. Math: Algebra

    By what percent will a fraction increase if its numerator is decreased by 10% and its denominator is decreased by 50%?

    asked by Ruby
  97. English

    We could have _____ lunch with them. Which of the following options correctly completes the sentence above? A. ate B. eat C. eaten D. had ate I think A

    asked by AMGCSTRNBSN
  98. geography

    what is exsolation?

    asked by selina
  99. matg

    the angle measure of a triangle are (x-7) (x) and (3x+2). write an expression in simplest form to represent all of the measures of the angles of the tringle

    asked by hunter
  100. Math

    Solve the system of equations using substitution, elimination by addition, or augmented matrix methods (your choice). Show work. 3𝑥 − 2𝑦 = 5 5𝑥 + 3𝑦 = 21

    asked by Ted
  101. Math

    Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability that a randomly selected adult has an IQ that is less than 115. Round to the nearest thousandth. Answer precisely. Do

    asked by Anonymous
  102. Math

    Susan tossed a die 1,038 times. Which of the following would be a good estimate of the number of times she got the number 3 on the die? A: 186 B: 128 C: 306 D: 273 Can someone please help and explain this to me?

    asked by Helen
  103. Statistics

    Recall that the power (1 – β) of a hypothesis test is the probability that we will reject the null hypothesis given that it is false; that is, the probability that we will correctly reject the null hypothesis. All other things being equal, which of the

    asked by Sarah
  104. life science

    A suitable aim for investigation 1 to test glocose

    asked by molepo sj
  105. physics

    An ore car of mass 40000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 16 m lower vertically, is a horizontally situated spring with constant 2.7 × 105 N/m. The acceleration of gravity is 9.8 m/s2 . Ignore

    asked by Jeje
  106. science

    Gold(at weight 197gmol-1) crystallizes in a cubic closest packed structures ( the face centred cubic ) and its density is 19.3 gcm-3 .calculate its atomic radius.?

    asked by Anonymous
  107. Chem

    why is sef4 melting point higher than sef6?

    asked by Mia
  108. Physics

    A brass cube 2cm on each edge is held in the jaw of a wire with a force 1600N. By aw much is the cube compressed. (Y for brass is 9.1×10^10pa)

    asked by CHARLES
  109. Statistics

    Suppose a baseball pitcher throws fastballs 80 % of the time and curveballs 20 % of the time. Suppose a batter hits a home run on 8 % of all fastball pitches, and on 5 % of all curveball pitches. What is the probability that this batter will hit a home run

    asked by Nicole
  110. Biology

    I need help creating a pedigree using this description: Lily is 28 years old. She has a younger brother Nick who has hemophilia and a younger sister, Sharon. Lily's parents are George and Maureen. George has a older brother named Edward and a older sister

    asked by Amy
  111. Math

    In a European country, 20% of the families have three children, 30% have two children, 40% have one child, and 10% have no children. On average, how many children are there to a family

    asked by Ted
  112. math

    If 3 to the exponent negative x is equals to 4t, express 4 to the exponent x minus 1 plus 4 to the exponent x plus 1 all over 17 times 12 to the exponent x in terms of t?

    asked by Andiswa
  113. Pre calc quadratic stuff

    The main suspension bridge has cables in shape of a parabola. suppose pinte on tops of where towers and cables are attatched are 168 m apart and 24 m vertically above the minimum height. determine the quadratic function in vertex form that represents shape

    asked by gucci$harma
  114. Maths

    How can you recognise the beat frequency from a graph? Why is the beat frequency the difference between the two frequencies of the two sound waves (theory behind this)?

    asked by Hally
  115. Science

    Name each compound by ionic, hydrogen, or molecular compound and name the following? Im stuck on these! help please!! 1- Al2S3 2- SrI2 3 - CL2O5 4 - FeCl2 5 - BeH2

    asked by Julie
  116. math

    Unit rate for:3 dozens of apples for $4.50

    asked by MASTERMODZ
  117. trigonometry

    In questions 2A, 2B, and 2C below, find the exact values using the given information: sin α = 1/6 with α between 0 and π/2 sin β = 3/5 with β between π/2 and π 2A. Find cos (α + β) 2B. Find tan (2β) 2C. Find sin (β/2)

    asked by ashley
  118. last 2 questions trig!!

    4. Solve the triangle(s), if possible. Round to the nearest tenth. Solve the triangle. Side a = 8, side b = 10, side c = 12 6. Two boats leave the same dock at the same time. The first sails in a straight line N40°W at 36 miles per hour and the second

    asked by ashley
  119. systems of linear equation

    two buses leave town 685 mi apart one bus travels 19 mi/h slower than the other if they meet in 5 hrs what is the rate of each bus

    asked by Sadra
  120. Chemistry

    1). Calculate the initial and final pH when 5.0, 10.0, and 100mL of 0.100M HCL is added to (a) 100mL of water (b) 100mL of a buffer which is 1.50M acetic acid and 1.20M sodium acetate 2). Develop a recipe for making this buffer from acetic acid, sodium

    asked by Nate
  121. trig help

    Find the equation of the hyperbola satisfying the given conditions. Vertices at (5, 1) and (-7, 1); asymptotes (y - 1) = 1/3(x + 1) and (y - 1) = -1/3(x + 1)

    asked by shawn
  122. Math

    A girl stands 7 meters away from a building. The angle of elevation from where she stands is 25 degrees. How tall is the Building?

    asked by Becca
  123. trig plz help

    Solve, finding all solutions in the interval [0, 2π). tan(3x) = -1

    asked by brittney
  124. life orientation

    Identity three courses or study field associated with science and give 2 reasons for each

    asked by maria
  125. trig

    Find the exact values requested. No decimal approximations. Given that cot θ = 4 for an acute angle θ, A. Find sinθ. B. Find cos(2θ).

    asked by brittney
  126. Linear Algebra

    Determine the projection of the vector v = (−1, 6, 4) onto the vector u = (−1, 2, 4).

    asked by Anonymous
  127. Math

    Find a single matrix that defines a rotation of the plane through an angle of π/6 about the origin, while at the same time moves points to five times their original distance from the origin.

    asked by Dan
  128. Math

    What shape has 21 faces and 14 vertices

    asked by Noah
  129. Solubility Graph in Excel

    I've done an experiment in class (completely following the guide to the letter) of a solubility experiment (the solvents being water, cyclohexane and ethanol). The unknown solid did not dissolve in the water, dissolved in the ethanol but left it just

    asked by Alexis
  130. Math

    Home Depot sells compact fluorescent lamps (CFLs) that have a mean life of 10,000 hours with a standard deviation of 1,000 hours. In an order of 8,000 lamps, how many can be expected to last 11,000 hours or longer?

    asked by Joe DeLucia
  131. Networks, Matrices, Linear equations.

    x y A(0.2 0.8)3000 B(0.5 0.5)2000 C(0.7 0.3)5000 Where A, B, C are countries, and x and y are resorts. The Matrix represents the percent of visitors. I need to use this matrix which I have worked out to find the number of visitors who visit X (X and Y are

    asked by M
  132. Physics

    How can you recognise the beat frequency from a graph? Why is the beat frequency the difference between the two frequencies of the two sound waves (theory behind this)?

    asked by Hally
  133. physics

    . 0.30m ....|______|_________________________ ....|...../\ ...|_|

    asked by lizbeth
  134. Algebra

    What is the length of the side of a square that has area smaller than the area of a circle with radius r cm.

    asked by Anish Panda
  135. physics

    The vertical and horizontal component of the initial velocity of a projectile are 36m/s and 64m/s. Find the initial velocity and angle inclination

    asked by charles
  136. Algebra pls. help

    so i've already answered one of the questions i asked yesterday. thanks for the username damon. yeah it was a typo. I'm gonna repost a question. Please please... someone help me. *The first and the second term of a progression are "a" and "b" respectively.

    asked by cici
  137. MAth

    Your lawnmower uses a gasoline and oil mixture for fuel. For every 2 gallons of gas you add 18 ounces of oil how much oil should you add for 5 gallons of gasoline?

    asked by Lauren
  138. Algebra

    Write an expression for this situation. A Resturant divided 20 gallons of lemonade among 4 tanks. How much lemonade does each tank contain?

    asked by Jenny
  139. Finance

    Fill out the missing items on the Kim, Inc.’s balance sheet based on the ratios given below: Cash and marketable securities 800 current liabilities ? Accounts Receivables ? Long term Debt ? Inventory ? Equity ? Fixed Assets ? TOTAL ASSETS $8800 TOTAL

    asked by Anonymous
  140. math

    Ratio of boy to girl is 4:6. If there are 1200 learners in a school,how many boys are there?

    asked by vukani
  141. MATH

    How do you find the z score of a percentile? For ex.: Find the z score of P88

    asked by Anonymous
  142. Chemistry

    Organic nhi aati smjh... Koi smjhado na

    asked by Avril
  143. math

    A fishermen 's spring scale is extended to a total length of 0.18m when 0.12 kg fish is suspended from it .If the spring constant is 100N/ m ; what is the total length of the spring when 11.4 kg fish is suspended from it

    asked by chipondiwa george
  144. quadratic equations

    The solution to a quadratic equation is x is equals to 3 plus or minus square root of 4 minus 8p all over 4 where p is the element of Q. Determine the value(s) of p that the roots of the equation are equal and non-real

    asked by Andiswa
  145. Physic

    An object 7.5cm light is placed 30 cm from aconcave mirror of curvature 20cm calculate the 1image distance 2image height

    asked by Yusuf aliyu
  146. trigonometry

    A Super Cat left Batangas port on a course 230°20' for 1.5 hours at 210 mph and then at 140°20' for two hours at 180 mph. How is she far from the port and in what direction must she travel to return to Batangas port?

    asked by ymme
  147. trig exact vales

    Find the exact values requested. No decimal approximations. Given that cot θ = 4 for an acute angle θ, A. Find sinθ. B. Find cos(2θ).

    asked by jre
  148. physics

    a student connects the ends of a pencil lead to a 6.0V supply and measures the current to be 8.6A.the lead is rod of graphite of length 7.5 cm and diameter 1.4mm. a)calculate the resistance of the pencil b)use this data to calculate the resistivity of

    asked by ruth
  149. trigonometry

    Two trains leaves the same station at 9:30 am and travel in a straight lines at speed of 54 mph and 75 mph,respectively. If the difference in their directions is 136°, how far apart are they at 6:30 pm?

    asked by ymme
  150. statics counting methods

    a restaurant has a fix price menu that consists of 4 choices of an appetizer, 3 main courses, and 3 desserts. you are allowed to pick one item from each category. How many different meals could you make?

    asked by calvin
  151. Canadian History

    Why did the Serbians not accept the Austrian demands? What was Russia's Response to the Austrian demands? Explain how the assassination resulted in all the major powers of Europe declaring war?

    asked by Pia
  152. algebra

    How do I write-17-16 as a equivalent addition?

    asked by rachel
  153. Astronomy

    F = GM1M2/R2 = (6.67x10-11 x 1.9891x1030 x 25) / (3000)2 =

    asked by Anne
  154. trig plz help

    A boat sails 20 km in a direction of N75°E. Draw the 20 km travelled in a direction of N75°E as a vector v in standard position. Find the component form of the vector v. Round your answers to the nearest hundredth.

    asked by jre
  155. plz help trig!!!!!

    A boat sails 20 km in a direction of N75°E. Draw the 20 km travelled in a direction of N75°E as a vector v in standard position. Find the component form of the vector v. Round your answers to the nearest hundredth. 2 pts. B. Next, the boat turns and

    asked by ashley
  156. Mathematics grade 9

    Calculate and compensate 823-273

    asked by Kgahli
  157. quadratic equations

    The solution to a quadratic equation is x is equals to 3 plus or minus square root of 4 minus 8p all over 4 where p is the element of Q. Determine the value(s) of p that the roots of the equation are equal and non-real

    asked by Andiswa
  158. math 108 trig

    1.Solve, finding all solutions in [0, 2π). cosx sin2x + sinx cosx - sinx = 0 2.Solve, finding all solutions in [0, 2π). 3sec x = 2tan^2x

    asked by brittney
  159. math

    find the least value of k for which the equation x^2-2kx+k^2=3+x has real roots

    asked by kaelyn
  160. Statistics

    Hi, I was studying for the math HL exam but I was stuck on Problem 6. I attached it as an image. imgur. com/a/XY874 There's a space because Jiskha does not let me post links.

    asked by cory
  161. math

    Given a formula vsquared=usquared±2as and s=1/2at squared

    asked by honore'
  162. mat

    f(x)=5sin^2x-8cos^5x [0,5 1.5]

    asked by Anonymous
  163. Calculus / Rates of Change

    An isosceles triangle has a base that is 1.5 times the height. If the area is increasing at 9cm2/s, how fast is the height increasing when it is 12 cm high? Known: base=1.5H dA/dt=9.0cm2/s h=12cm dh/dt= ? Area for a triangle: LxW/2 After that, I am

    asked by Jermaine
  164. Life orientation

    Practical action that you can take to address human right violatin in your community

    asked by Anonymous
  165. algebra 2

    Question: Write the equation of a cubic function that has the x-intercepts of -4, 2, and 5 and passes through the point (6,20) My Answer: y = .5x^3-1.5x^2-9x+20 What I did: Put the x-intercepts and given point into stat plot (on calculator) then hit stat

    asked by Jon
  166. Math

    Without using table....log(base 5) (8/2) + log(base 5) 3(15/2) -log(base 5) (81/8)

    asked by Ruth
  167. algebra 1

    What is -16x^2+96x+200?

    asked by mark
  168. trig plz help

    Solve. Round off your answer to the nearest foot. (The picture is not drawn to scale.) A balloon is 1500 feet above the ground. The angle of depression from the balloon to headquarters is 46°21'. How far is the headquarters from a point on the ground

    asked by ashley
  169. Calculus / Rates of Change

    A cylindrical tank with a circular base of 8m in diamante is being filled at 4m3/min. How fast is the level rising when it is half full? Known: d=8m 2r=d r=d/2 d(v)/dt=4.0m3/min Confusion: How to apply the "half full" concept.

    asked by Jermaine
  170. science fair

    will a heavy metal spring launch a baseball 7 feet in the air with 5 pounds of preasure

    asked by bill
  171. Math

    The feasible region shown below is bounded by lines 2𝑥 − 𝑦 = 2 , 𝑥 + 𝑦 = 2 , and y = 0. Find the coordinates of corner point A

    asked by Steven
  172. math

    marisol has 5,000 dolers shc spen 200 the muvis how meny dolors ths marisolj hav lefet 5,000100=4,000

    asked by marisol
  173. Pre-Calc

    How do I write the partial fraction decomposition of 7/(x^2+13x+40)?

    asked by Anonymous
  174. math

    a three digit number with 8 ones and 4 tens. The sum of all my digits is 20. What number am i?

    asked by Luis
  175. math

    Construct a 2 × 2 matrix that defines a shear of factor 4 in the y-direction, followed by a scaling of factor 5 in the x-direction, followed by a reflection about the y-axis.

    asked by Dan
  176. math

    30% of my money is $90. How much money do I have in all

    asked by nathan
  177. Safety at work

    Need to unscramble the letters ordwkksforsrtimaaaen to make 5 words

    asked by Carma
  178. Maths

    A flay pole is placed at the top of a tower.the angle of elevation of the bottom and top of the flay pole from a point on the ground 10M away and 40 degrees and 50degrees respectively.find the length of the flay pole.

    asked by Patrick
  179. trigonometry

    Two trains leaves the same station at 9:30 am and travel in a straight lines at speed of 54 mph and 75 mph,respectively. If the difference in their directions is 136°, how far apart are they at 6:30 pm?

    asked by ymme
  180. trigonometry

    A motor cruising south along the highway is 16 km from the nearest town. After travelling a distance of 32 km, he finds that he is 19 km from the same town. Find the bearing of the town from the second position of the motorist.

    asked by ymme
  181. algebra

    Find the eight term of the geometric sequence for which the first element is 3/8 and the common ratio is 2.

    asked by Aliah
  182. math

    find the dimentions of a bose of largest area that can be inscribed in a sphere of radius 1

    asked by Asia
  183. Maths

    An antenna stands on a pole on the top of a house.If a woman is 70m from the house observes that the angles of elevation of the top and foot of the pole are 63 and 60 resp.,how long is the pole?

    asked by Stephen Ocheje
  184. Calculus, Really need help!

    Compute d/dx(f(g(x))) -where f(x)= square root of x -and g(x)=x^2+7

    asked by Dominick
  185. math

    I can only use numbers 0-9 , and only 1 time. The question is, an even 2 digit number with the sum of the digits equal to 15 and the tens place less than 9

    asked by Jules
  186. Chemistry

    Name each compound by ionic, hydrogen, or molecular compound. And name the following? 1- P2O3 2 - MnO2 3 - Al2S3 4 - SO3 5 - NH3 6- SrI2 7 - CL2O5 8 - FeCl2 9 - BeH2

    asked by Julie
  187. Statistics

    Drug clinical trials are analyzed using hypothesis testing methods. As we’ve discussed, the null hypothesis in the effective stage of such trials is that the drug being tested is ineffective. The alternative, of course, is that the drug is effective.

    asked by Sarah
  188. math

    Given a formula v squared=u squared±2as and 1/2at squared

    asked by honore'
  189. Algebra

    Reposting: The geometric mean and arithmetic mean of the two numbers are 8 and 17 respectively. 1. find the bigger number 2. find the smaller number 3. find the harmonic mean Thanks in advance to whoever will answer :)

    asked by cici
  190. Chemistry

    Would glass, plastic or cardboard be best to store milk so the lactic acid doesn't increase?

    asked by Jen
  191. Algebra

    The formula for the volume of a cube is V=s³. What is the volume of a cube with a side length,s,of 3 feet?

    asked by NAIA Owens
  192. algebra 1

    What are two methods of solving 4x^2+16x+9?

    asked by mark