Trig check my work please?

42,204 results, page 77

  1. art/photography

    1. In sandy skoglunds THE COCKTAIL PARTY what was the artist contrasting? 2. What did the artist say about her work? 3. What does the artist deal with in all of her illustrations? 4. What happens to sandy skoglunds installations pieces and what become of the work of art? 5. ...
  2. trig

    Find all solutions of cos 2x + √2/2 =0. a) + or - 3/8pi +Kpi b) 2/3pi + Kpi, 5/3pi + Kpi c) + or - 2/5 +Kpi d) 2/3 pi + 2Kpi, 5/3pi + 2Kpi I really need help on this question :(
  3. Trig

    Given sin θ = −1/2 and sec θ > 0, find the exact value of tan 2θ. Radical 3 Radical 3/2 Negative radical 3 Negative radical 3/2
  4. Trig

    the angle of depression from the top of a building to a point on the ground is 32degrees30', how far is the point of the ground from the top of building if the building is 252m high?
  5. trig

    From a certain point, the angle of elevation of the top of the building is 38. From a point 75 feet nearer the building, the angle of elevation is 65. Find the height of the building.
  6. Chemistry to DrBob

    Dr. bob could you please check this work cus i can't seem to get it right the first step of the synthesis is described by the reaction below. When 1.750 g of Fe(NH4)2(SO4)2 6H2O is mixed with 13 mL of 1.0 M H2C2O4, the theoretical yield of FeC2O42H2O is ???? grams. Fe(NH4)2(...
  7. algebra 1

    Totally lost on this. Any help would be awesome! 1. The function A(t)=0.233t+5.87 can be used to estimate the median age of cars in the United States t years after 1990. (In this context, we mean that if the median age of cars is 3 yr, then half the cars are older than 3 yr ...
  8. Career Exploration (Check Answers)

    1. Your personality is: the way you usually think the way you usually act*** both of these neither of these 2. Susana is creating a list of adjectives that usually describe her. She is listing her: personality traits*** personality types career types teamwork profile 3. ...
  9. English Improving writing

    please take a look at this thanks Prewriting Paragraph 1 The problem is Jack and Rachel often have nothing to do Bonnie and Molly are working extra and have to work over time Melanie and Jessica share an administrative assistant Larry's assistant only works 15 hours The ...
  10. English

    In my original version I had the simple past and past perfect. I tried to use the simple present (in place of the simple past) and nearly always the present perfect (in place of the past perfect). However, I’m still unsure. Could you please check them again? 1)The following ...
  11. chemistry

    if 37.9 liters of NO at .993atm and 146 degrees celcius are decomposed by the reaction 2NO-->N2+O2 how many grams of nitrogen will be formed... could you show mw step bu step how to do this ? thanks....i have finals tommorrow.... i need HHHHHHEEEEEEELLLLLLPPPPPPPP PV=nRT P=...
  12. Math

    Okay .. i have a trig question for some floor plans that im trying to do. I have a right angle . /| / | c / | a /___| b I have the lengths of side c and b. Both Being 28ft in length. What is the length of side a? The way you have drawn it, or tried to draw it, c is the ...
  13. trig

    Given the function y = 3cos(3x + pi), identify: Amplitude (if applicable, give the answer in fractional form) Period (in radians as a multiple of pi - note: do not write "rad" or "radians" in your answer) Phase Shift (if the shift is right, enter + and if to the left, enter - ...
  14. Trig. Law of Cosines

    Show that any triangle with standard labeling... a^2+b^2+c^2/2abc = cos(alpha)/a + cos(beta)/b + cos(gamma)/c I don't get it. Can someone please help me. Start here with the law of cosines: a^2 = b^2 + c^2 -2bc Cos A b^2 = a^2 + c^2 -2ac Cos B c^2 = a^2 + b^2 - 2ab Cos C Add ...
  15. Trig Circular Motion

    A es004-1.jpginch circular saw blade rotates at 5200 revolutions per minute. a) Find the angular speed of the saw blade in radians per minute. b) Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact the wood being cut.
  16. trig

    when sin theta+cos theta=square root of 2,find the solution of sin^3 theta+cos^3 theta
  17. Trig

    I was wondering, is a sinusoidal function an algebraic model? Or, on the other hand, is there a way to derive an algebraic model from a sinusoidal function?
  18. trig

    given cotθ = (1/2) √7, find sinθ and cosθ in quadrant I cotθ = x/y would 1/2 be the x and √7 be the y?
  19. trig

    angles of elevation to an airplane are measured from the top and the base of a building that is 40 m tall. The angle from the top of the building is 31°, and the angle from the base of the building is 40°. Find the altitude of the airplane. (Round your answer to two decimal ...
  20. trig

    A 2000 pound car is parked on a street that makes an angle of 12* with the horizontal (think it's a street on a hill). a) find the magnitude of the force required to keep the car from rolling down the hill. b) Find the force perpendicular to the street.
  21. Trig

    A ship leaves its homeport and sails on a bearing of N28degrees10'E. Another ship leaves the same port at the same time and sails on a bearing of S61degrees50'E. If the first ship sails at 24.0 mph and second sails at 28mph, find the distance between the two ships after 4hrs.
  22. chem

    which of the following is a chemical reaction? A) propane forms a flame and emits heat as it burns. B) Acetone feels cold as it evaporates from the skin. C) Bubbling is observed when potassium carbonate and hydrochloric acid solutions are mixed. D) Heat is felt when a warm ...
  23. Math - Int Trig

    Given the functions: f(x)=2x+2 g(x)=3/x^2+2 h(x)=sqrt(x-2) Find the following 1) (f∘g)(-5) 2) (h∘g)(3) 3) (g∘h)(-2) 4) (g∘g)(-2) 5) (f∘h)(12) Find the following and state the domain: 6) h∘g 7) f∘g 8) g∘f 9) g∘g 10)g∘h
  24. Georgia History

    1. Which of the following describes the Puritans? A) didn't have much success as planters B) made Sunbury into a thriving port*** C) came from the backcountry of Virginia D) came from Pennsylvania by way of North Carolina 2. Georgia’s slave code was modeled after the code ...
  25. chemistry

    0.872g sample containing only NaBr and KBr gives 1.052g AgBr. what's the % of each salt? This is the type of problem that cannot be answered without other information. I think you have made a typo in your problem I worked through it and I get negative numbers for the mass of ...
  26. PHYSICS!!!!HELP PLEASE

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the spring scale on the moon...
  27. physicss

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the spring scale on the moon...
  28. PHYSICS *_* HELP PLEASE

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the spring scale on the moon...
  29. FACS - Reading Assignment Help!

    7. Explain - Why is it important to evaluate the work plan? What might happen if team members fail to evaluate it? Answer - The reason why it's important to evaluate the work plan is because so that they understand what did correctly, what could be improved, and whether they ...
  30. physics

    A force of 8 N acts on a 2 kg object as it is displaced along the x-axis. The speed of the object when it is at x= 2m is 5 m/s. a) what is the net work done by F(x) on the object as it is displaced from x=2m to x=8m? sol) 8m - 2m = 6m; 6m * 8N = 48 J b) What is the object's ...
  31. English

    Writeacher, I urgently need you to check these sentences. 1) I'm pleased to read that English is and will remain the lingua franca of the project. For this reason, we'd like to vary a few sentences in your application form. In particular, this sentence: 2) "By executing the ...
  32. physics

    Indicate true or false in each of the following statements: 1. A static magnetic field can do work on a current carrying wire when the current in the wire is perpendicular to the field. 2. The time required for a charged particle to complete one cycle of a circular path in a ...
  33. English

    Can you please check the following senteces for me? Thank you very much 1) Give a brief description of the monster as referred to (?) by Dr Frankenstein to in Chapter 5 of Mary Shelley's Frankenstein. Explain then what the monster stands for and what feelings this detailed ...
  34. Writing

    I'd find better words to replace these: excerpt (whether it's spelled correctly or not) -excerpt--> anecdote impede -impede--> prevent regret (which needs a direct object after it) -regret--> regret IT The verb tense and word choice in this sentence need fixing. It's ...
  35. Physics/trig

    During takeoff, an airplane climbs with a speed of 300 m/s at an angle of 36 degrees above the horizontal. The speed and direction of the airplane constitute a vector quantity known as the velocity. The sun is shining directly overhead. How fast is the shadow of the plane ...
  36. physics

    A) Assume the mass of a pendulum is 3kg. Calculate the work done by the pendulum on the mass from 0 degrees to 180 degrees ( you will need to integrate with respects to d(theta ) instead of dx given: the mass at the end of the string experiences a restoring force given by: F=-...
  37. English

    Can you check these sentences for me, please? Thank you very much for your help. 1)Big Brother is a TV programme (or a reality show?) about people and relationships. 2) In particular, contestants have to stay in the same house for ten weeks. 3) They have to make their own food...
  38. Physics

    An elevator cable breaks when a 950 kg elevator is 23 m above a huge spring (k = 2.3×105 N/m) at the bottom of the shaft. (a)Calculate the work done by gravity on the elevator before it hits the spring. (b) Calculate the speed of the elevator just before striking the spring...
  39. Calculus

    The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5 - xi) = 5 / 5 ri = 5 - xi Vi...
  40. Physics/Math

    A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to t = 2.0 s. find the ...
  41. TOm

    Hello, this is the last question that I can't seem to or be able to solve: 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. The drag coefficient of Jenny is 0.300, the surface of contact with air is 0.750 m^2 and the air density is 1,31 kg/m^3...
  42. physics-please check

    is this right?: when a form of energy changes from one form to another some energy may transfrm into a useful form, those useful form of energy is high grade energy.while the rest of the energy will always change to form we cannot use.which is called the low grade energy. if i...
  43. English final draft

    Please take a look at this for me it is marked Final however it may not be There are on- going problems that need to be addressed at the DMD company. First there is uneven allocation of tasks. While Bonnie and Molly are working overtime at least twice a month, Jack and Rachel ...
  44. Bit rate and probability

    Attention, please show the calculations in details, comments have to be provided. You have information source with M symbols. 1. Calculate the amount of the information in bits for one M-ary symbol, considering that the probabilities of the symbols are the same. 2. Calculate ...
  45. History

    How did the Cold War (period that began immediately following WWII) affect the Congo Since you're doing a research paper, I suggest you first check the article on the Congo in this encyclopedia. http://encarta.msn.com/ For more information, go to Google and search for Congo ...
  46. English

    “Well that’s sculpture, making a ’74 Toyota look like a ’63 Corvette, only I didn’t think of it that way... I was doing good work, and I was making good money. A. to prepare the reader for a change in topic. B. to show Ramirez’s pride in discussing his work. C. to ...
  47. English Improving writing rough draft

    Please take a look at this for me this is what I plan to this in however one last look would be great thanks so much for all of your help. :) Prewriting Paragraph 1 The problem is Jack and Rachel often have nothing to do Bonnie and Molly are working extra and have to work over...
  48. Trig

    A guy wire attached to the top of an electric pole makes a 700 angle with the level ground. At a point 25 feet from the guy wire (farther away from the pole), the angel of elevation to the top of the pole is 420. How long is the guy wire?
  49. Trig

    A guy wire attached to the top of an electric pole makes a 70deg angle with the level ground. At a point 25 feet from the guy wire (farther away from the pole), the angel of elevation to the top of the pole is 42deg. How long is the guy wire?
  50. Math

    This one confused me since it revolved around what seemed like dividing trig function by another function Write the following expression in terms of the tangent function 2 / ((cos(r^2 - s^2) / (sin(r^2 - s^2)) = ? I know tan t = sin t / cos t. So would I multiply by the ...
  51. physics

    A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m? Calculate the kinetic energy: E_{k} = 1/2 m v^2 Then use that The work performed by the force must ...
  52. precalc (check answer)

    l(x)=3-x^2 l(x)=7 x=-2 am i correct?
  53. math

    solve the equation and check -(9x-4)-(2x-6)+7=-8(x-9)-(6x+2)+4
  54. alGEBRA 2 help please would appreciate

    x over (x+3) -x over(x-3)=x^2+9 over X^2-9 solve for x and check answer
  55. beginning algebra-check my answer

    [(x^2-1)/(x-3)] / [(x^2-x-2)/(3x-9)] I get (3x-3/x-2)
  56. Math

    Please check this problem -5x > 30 answer x < -6
  57. math

    solve 9x<-27 I did 9x/9<-27/9 x<-3 Just a double check. I believe this is right Thanks
  58. math

    solve the equation and check 1.9(5-x)=1.7(3-x)
  59. Algebra 1

    Can you check this one for me. Evalute the polynomial for x=1. 2x^2-2x+4 When x=-1, 2x^2-2x+4=8
  60. math

    can someone please check my answer? -9<==4x-8<==-7 {x l -1/4 <== x <== 1/4} is this correct??
  61. math

    can someone check this please find indicated outputs for f(x)= 4x^2 - 2x f(0)=0 f(-1)=6 f(2)=14
  62. Math

    if p=8 evaluate 4^2/p•3 2 3 6<---- 8 Check my answer
  63. math *check* (PERMUTATION)

    simplify 3! . . . . . . . . A.2 B.5 C.3 D.6*************?
  64. Algebra 1

    solve for x and check you result -4(2x-3)=-8+5
  65. algebra

    Factor - check by multiplying Is this right? x^2-6x = x^2(x-6)???
  66. More Math To Check Please

    4c^2 - 12c + 9 This is what I got: (2c+3)(2c-3) *Is that correct.? No, it is (2c-3)^2.
  67. Algebra

    Can someone check my answers? 1. 3/c - 4/3c = 5/3c 2. -3t/t-4 - 2t+4/4-t = -2t-4/t-4 3. z/3z^2 + 4/7z = 19/21z 4. 5x/2x-6 + x+2/3-x = 4x-2/2x-6 or 2(2x-1)/2(x-3)
  68. tenant relations

    check my answer 1-b 2- a 3- b 4- b 5- a
  69. Math

    Pls check - Solve 9^2-7 (16÷2^3) 9^2-7 (16÷8) 81-7 (2) 81-14 67
  70. Math

    Solve and check. ( 3 marks) 5/(x-1)+2/(x+1)=-6
  71. Math

    0.8(4+-a)=5.6a how to check this so the answers both equal out?
  72. aLGEBRA 2 help please would appreciate

    x/x+3 -x/x+3=x^2+9/x^2-9 solve for x and check your answers
  73. Math 114

    Solve and check x+y=12;y=3x x+y=12;y=3x x+3x=12 4x=12 4x/4=12/4 x=3 y=3x y=(3)(3) y=9
  74. Algebra

    My question is: b-3= -4 A.) 7 B.) 1 C.)-1 D.)-7** I think it may be D.). I would just like someone to check my answer.
  75. math

    Please check problem 3y - 2 > 12 - 5 y answer y > 7/4
  76. English

    Can someone check my grammar and punctuation, please?
  77. college algebra

    3/t-3=5/t+4 3(t+4)(t-3)(5) check this problem
  78. Math

    Pls check - Solve 9^2-7 (16÷2^3) 9^2-7 (16÷8) 81-7 (2) 81-14 67
  79. algebra addistion

    can you check my answers |-13| - |9| i got 4 |15| - |-3| i got 12 |-12| + |-3| i got : 15 |-31| + |-12| i got: 43 +9 + (+7) i got: 16 -21 18 + 21 i got : 39 -5 +(-13) i got: 7 -18 + (-3) i got: -21 -2 + (+17) i got: 15 15 + (-9) i got: 6 5 + 21 i got 26 -10 + 3 i got: -7
  80. math

    solve and check results 3x + 7(x-2)-13=12-3x
  81. Math

    2/8 plus 6/12= 6/24 + 12/24=18/24=9/12=3/4 Can you please check the above answer and tell me if I got this correct?
  82. Algebra

    Divide and check: (3x^2-2x-13)divided by (x-2)
  83. Algebra 1

    Solve. Check your answer. 1. ((d + 2)/(d + 8)) = ((-6)/(d + 8)) A: ?
  84. comm/155

    Hi could you check my sentences to see if their right?
  85. math

    y-x=1 2x-y=1 changing it to y y=-x+1 y=2x-1 can someone check if I did it right? If not, please correct me.
  86. Math

    2/3 x 4 1/5= 21/5 x 2/3=42/15 42/15=2 12/15 Please check the above answer Ms. Sue. Thank you
  87. math

    Check my Answer Ms.Sue
  88. math

    Please check problem 4 x + 7 < 8y - 1 answer x > 2
  89. math-please check

    is the solution to 2x^2-4x+5... 1(+/-)((sqrt6)/2)i ??
  90. Algebra 1--Please, check my answer!

    Solve. 1. ((3)/(s-6)) = ((4)/(s)) + ((1)/(2s))
  91. Algebra 1--Please, check my answer!

    Solve. 1. ((3)/(a-4)) = ((a) / (a-2)) A: a = 6 or a = 1
  92. math

    how can we check that 46/100 is equal to about 39/85?
  93. math

    solve the equation and check 1/5(y+3)+3=1/10(7y-4)-5
  94. math- check me

    Solve the inequality for x. 16 <= 4x+4 I get x>=3 Is that right?
  95. Math

    Solve and check. ( 3 marks) (5)/(x-1) + (2)/(x+1)=-6
  96. business communication

    which of the following is not something to check during a thorough revision?
  97. Math

    Solve and check. ( 3 marks) (5)/(x-1)+(2)/(x+1)=-6 I need the help!
  98. math

    please check this problem 2x + 5 < 7 answer x < 1
  99. algebra

    Can you check these problems? 3x+13=96 x=6 -8-7x=-120 x=8
  100. Math

    Roots. Solve and check 1/4 -1/x+6= 1/x
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