Trig check my work please?

90,437 results, page 60

  1. trig

    Solve rounding to 2 decimal places. 9cosx + 4cos(2x) + 1 = 0 over 0° ≤ x < 360° Thanks to anyone that can help! I'm totally stumped.
  2. math

    In right triangle ABC, a = 52 ft and c = 63 ft. Which of the following trig ratios of angle B, would combine the given sides?
  3. Trig

    Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
  4. Trig

    Evaluate tan(a-b). No decimals. Only exact answer. Sin a = -7/25, cot b = -8/15 neither a nor b are in quadrant IV.
  5. Pre-Calc/Trig

    Use Descartes' rule of signs to describe the roots of the polynomial function. m(x)=x^3+3x^2-18x-40
  6. TRIG!

    true or false, the two sets of parametric equations x=t, y=t^2+1 and x=3t, y=9t^2+1 have the same graph. justify your decision.
  7. trig

    How much does it cost to paint a triangular surface of sides 6m,5m, and 11m at the rate of rs.20/-per metre square.
  8. trig equations

    Find all solutions (if they exist)for the given equation on the interval [0,2pi) cos^2x-5sinx+5=0
  9. functions and trig

    write the transformation of X cubed if it is shifted right four units and then reflected over the X axis
  10. Trig

    Find the exact value of the trigonometric function given that sin u=3/5 and cos v=-8/17. Both u and v are in quadrant II. Tan (u+v)
  11. Trig

    Convert the polar equation to rectangular form. r=4cos-4sin What I have so far: r^2=4rcos-4rsin x^2+y^2-4x+4y x^2-4x+y^2+4y=0
  12. trig

    Find the exact value of costheta if ,sintheta=-2/3 and theta is in standard position with its terminal side in Quadrant IV.
  13. cultral diversity

    Help! check my answer Emergent literacy skills are significantly enhanced by a. the educational or professional level of one or both parents b. engaging in literacy events with other persons,especially adults. c.the family's socio-economic ststus and aspirations. d.quanlity of...
  14. Science need help

    Choose the words or phrases that most accurately complete the sentences below. One of the most effective measures that a government can undertake to reduce cardiovascular disease is to ………………..Individuals can also decrease their own risk of developing CVD by ...
  15. math

    3 3/4pt=____c show steps and work please Try the method DrWLS or I showed you FIRST. Repost if you still don't get it but tell us what you don't understand about the procedure.
  16. Math

    x=3-3y x+3y=-6 I'm looking for coordinates of where the two lines intercect. If you can, please show your work :) I know it's either (5,-2) or No Solution. But I hate not knowing how something works, and I know that if I don't find out, i'll regret it.
  17. Chemistry

    Hey guys, been a long time since I have done this. Please show your work. Thanks a lot! How many grams do 3.6 × 10^20 atoms of sodium weigh? Answer in units of g
  18. algebra 1

    what is the y-intercept of the graph of 4x+2y=12? i was giong well on my scratch paper and i mest up and i got stuck and had to erase everything and do it over answers: a -4 b -2 c 6 d 12 please and thank you i need how they do the work i cant decide!
  19. Physics

    A 1.11 kg block slides down a 15.0 m long 32.0° incline at constant velocity. How much work is done by friction? (please help me show me how to solve using equation and where to plug the numbers)
  20. maths

    my daughter studying in 2nd standard this is the project work i don't understand, please show me the answer. make a chart to represent nos 1-15 using small objets
  21. intermediate algebra

    solve using the elimination method. show your work. if the system has no solution or an infinte number of solutions, state this. 14x+18y=-54 -4x-14y=42 help me please
  22. statistics

    suppose x is a uniform random variable with c=30 and d=80 find the probability that a randomly selected observation exceeds 50 this is the direct question, i have no idea how to work this problem, please help
  23. Math

    Could someone please help me with this problem I just do not get it. Arrange the numerals 1 to 9 (1, 2, 3, 4, 5, 6, 7, 8 and 9) in a single fraction that equals exactly 1/3 (one third)? Example that doesn't work: 7192/38456 = 0.187
  24. Math

    Suppose f(x) is a polynomial of degree of 5 and with leading coefficient 2009. Supposdm further that f(1) = 1, f(2) = 3, f(3) = 5, f(4) = 7, f(5) = 9. What is the value of f(6). The answer given in book is 241091. Please work the complete solution.
  25. math

    stamjps are sold in bookiets of 100,50, and 10.find as many different ways to buy 200 stamps as you can. record your work in the chart. could you give me some examples...please!
  26. PLEASE HELP CHEMISTRY

    CuSO4.xH2O Determine the percent by mass of water in your sample of hydrated copper (II) sulfate. Show your calculations clearly. My work. i got 10% is that correct
  27. chemistry

    CH4+2O2-->CO2+2H2O If 22.75g of carbon dioxide is obtained when 9g of methane is burned in excess oxygen, what is the percent yield? Show work too please
  28. algebra

    Am I allowed to post 3 related questions? I'll try. Please write these scientific notation answers in standard form showing complete work. 1.764*10^8 3.90625*10^-7 3.0*10^3 Thank you.
  29. chem

    What are the molality and mole fraction of solute in a 25.5 percent by mass aqueous solution of formic acid (HCOOH)? work this one out please i didnt understand
  30. Algebra

    In Vanessa's coin bank there are 4 times as many quarters as nickels, 2 fewer dimes than nickels, and 15 pennies. The total amount in the bank is $5.80. How many of each coin are in the bank? A. Assign a variable to the unknown quantity. B. Write an equation you can use to ...
  31. spanish/check

    translate to spanish our father's office -la oficina de nuetro padre 2-translate the possesine adjective in parentheses into spanish -su escuela(their) can you check my answer thank you
  32. English

    I did the corrections myself. Can you please check them? I just wanted to know if it is better to say "at Medford Square or in Medford Square, "to leave Turin for Rome", "to leave from Turin and go to Rome", "on" OR "during" our last night in Rome?". I included the sentences ...
  33. English

    The new drug proved to be highly efective,it has no side effects. A. PROPERLY CONSTRUCTED SENTENCE B. COMMA SPLICE C. LACKS PARALLEL PARTS D. HAS UNCLEAR PRONOUN Please post your answer, and we'll discuss it. A Please check this site. http://ace.acadiau.ca/english/grammar/...
  34. math

    I was wondering if someone could double check my work on a test I'm self correcting. Here's the problem, it has to do with Cramer's Rule. 24x + 6y = 11 24x + 60y = -25 I ended up finding the base determinant (D), and then dividing Dx and Dy by D. My answers for Dx and Dy ...
  35. Health/Law

    Please check my answer :) Martha the medical assistant is legally compelled to give her testimony in a under oath in a malpractice lawsuit Why must she do this ? I think it might be she got some type of subpoena or She is a key witness in the case
  36. geo check

    since the 1970s the united states and canada have reduced _______ around lake erie. A)unregulated boat traffic b)overgrowth of destructive algae c) noise pollution D)illegal immigration. i think it b please help me out.
  37. Grammar and Composition

    Please check these: Capitalize the conjunctions in the following sentences. 1. The audience laughed AND clapped. 2. Both you AND I will come to a decision. 3. Aunt Alice called WHEN we were out. 4. Give it to the boy OR his mother. 5. We ate NOT ONLY cake BUT ALSO watermelon. ...
  38. language please check these

    ARE THESE CORRECT(do they make sense to u): -he is a columnist -the remedy is working -you will receive a bonous -i don't know a reason -i bought an anniversary gift -the jewel is expensive -may i borrow an almanac -kate wants the checkersthe signature was forged thank you oh ...
  39. Government US

    According to Charles Beard, which of these was NOT an economic group that benefited from specific constitutional provisions? a. Those holding public b. slave owners c. Western land speculators d. Farmers and ranchers e. Merchants and manufacturers I would say C Please check.
  40. geography

    1. What five countries are landlocked? Nepal, Afghanistan, Bhutan, Mongolia, and Tajikistan. 2.What is the name of the body of water that is part of the Indian Ocean between the east coast of India and the Malay Peninsula? Bay of Bengal Can you check my answers, Please?
  41. Language Art (Please Check)

    Im actually confused on this one i think its C. or D. but ill go with D. which of the following would be most likely to cause a commotion? A.A baby sleeping in a stroller B.A library closing for the evening C.A public appearance by a celebrity D.A grandfather clock striking ...
  42. SOCIAL STUDIES PLEASE HELP CHECK ANSWER

    Which example best shows the United States as a mediator? A. Debating human rights with China**** B. Supporting democracy in the Philippines C. Promoting a peace agreement in Bosnia D. Encouraging the end of apartheid in Africa
  43. World History

    What was one of Maria Theresa's successes as an absolute monarch? A. uniting the German states** B. forcing Frederick out of Silesia C. strengthening royal power D. adding Hungary to the Hapsburg empire I said A please check my answer.
  44. Check please

    I think it is D can someone tell me if that is right? Which of the following was the main contributor to finally bringing the United States out of the Great Depression? A the National Recovery Administration B the Good Neighbor Policy C wartime spending D the election of ...
  45. english

    it is a conversation between two friends about their journey to London. John asked Lee what he talked with the travel agent regarding their journey to London. Then, Lee told that the agent informed him that it takes some more time, at least one week. For which, John asked him ...
  46. Physics

    A 64.4-kg skateboarder starts out with a speed of 2.11 m/s. He does 81.6 J of work on himself by pushing with his feet against the ground. In addition, friction does -289 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
  47. ph

    A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
  48. PHYSICS

    A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
  49. physics

    A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
  50. physics

    A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ...
  51. social studies

    how did women help prepare for the civil war??? i cant find in s.s book you should double check your book. if you cant find it in there you could use the internet, but i would check the book
  52. Writing Sentences and Paragraphs

    Here is my Paragraph 1 , It is my good copy just wanna a final check before I submit it. PARAGRAPH 1 According to the job listing in The Daily News, I understand you are seeking a Medical Administrative Assistant to work in Fletcher Allen Hospital in Burlington, Vermont. This ...
  53. Algebra

    Could you please check my answers? Find an nth degree polynomial function with real coefficients satisfying the given conditions. 1. n=3; 3 and i are zeros; f(2)=20 -I got: f(x)=-4^3+12x^2-4x+12 3.n=3;4 and i zeros;f(-3)=60 -I got:f(x)=6x^3+24x^2+6x+24
  54. Law

    Please check my answer thanks :) Mary files a suit in federal court. What would give the court subject matter jurissiction? I said the claim involves a federal statue
  55. Law and Ethics in Med

    Please check my answer thanks :) Roe v Wade is based in part on... the fetus's right to be born after the first trimester True or False My answer is True
  56. Health care

    please check my answer thanks :) Which health insurance program is designed to complement the retirement surivior and disability insurance enacted under Titlr II of the SSA I said Medicare
  57. dog behavior

    please check my answer True or False The following statement describes classical conditioning. It involves the pairing of a conditioned stimulus with an unconditoned stimulus I say True
  58. math

    could someone please check these problems for me? Thank you! 1. -0.7x<-35 x<50 2. Solve by elimination 3x+4y=3 6x+8y=6 answer:0 3. find y intercept to graph x+5y=10 answer: (0,2)(10,0) 4. use distributive law to solve 7(w-5)=-35 7w-35=-35 if i add 35 to both sides i get ...
  59. math

    could someone please check these problems for me? Thank you! 1. -0.7x<-35 x<50 2. Solve by elimination 3x+4y=3 6x+8y=6 answer:0 3. find y intercept to graph x+5y=10 answer: (0,2)(10,0) 4. use distributive law to solve 7(w-5)=-35 7w-35=-35 if i add 35 to both sides i get ...
  60. Assistance Dogs

    Please check my answer thanks :) Service dogs are often taught to recall to a person A. sitting in a wheelchair. B. lying down. C. standing with crutches. D. kneeling down I picked A
  61. U.S. History

    please check this The Treaty of Greenville was the result of which of the following battles a. Battle of Ticonderoga b. Battle of Burnt Cabins c. Battle of Fallen Timbers d. Battle of Little Big Horn i picked C
  62. 3rd grade math

    179,323,175 round to the nearest million sue can you please check my answer . this is my answer 280,000,000. hope i got it right.
  63. 5th grade math

    ms. sue can you help me with another problem? whatnis the median of the following number? 24,99,101,93,14,29? by the way can you please!check my last problem that you posted to me an hour ago here is my answer is 20 the median
  64. Soanish-6th grade-Another question-Please check an

    I have another question. If I have to use the word tener to express she is hot-I would say -Ella tiene calor, correct?
  65. Math(can you just check my answer please)

    Lines x and y intersect to form angles 1,2,3, and 4. The measure of angle 3 is (3x - 9) and angle 4 is 111 degrees. Can you help me make a equation I think the equation is 3x-9 + 11 = 180 is this correct
  66. Physics(Please check)

    A spring stretches by 0.0226 m when a 4.39-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 7.35 Hz? 7.35 = 0.0226(4.39x) Did I set this up correctly?
  67. Physics(please check)

    A spring stretches by 0.0226 m when a 4.39-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 7.35 Hz? 7.35 = 0.0226(4.39x) Did I set this up correctly?
  68. check my set up please

    At a horizontal distance of 34 meters from the base of a tower, the angle of elevation to the top is 72 degrees. Find the line of sight distance to the nearest meter. I set this up tan72=x/34
  69. Science

    When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate hear, the sound wave is A. reflected B. refracted C. absorbed D. transmitted I think it's C. check please
  70. Math

    What is the slant height for the given pyramid to the nearest whole unit? Pyramid base = 6cm Height = 4cm A.) 7cm* B.) 5cm C.) 9cm D.) 8cm Ca n someone please check this?
  71. English Grammar

    Please check if its correct Change from Positive to Negative 1.None of them were bad - All of them were good 2.Nobody was present in the funeral function -Everybody was absent from the funeral function
  72. His

    4. The United States cut off sales of oil to Japan after the A. Japanese occupation of southern Indochina. B. Japanese occupation of Hong Kong. i chose B please can you check my answer
  73. Chemistry(please check my answer)

    A radioactive isotope of radium (Ra-226) has a half-live of 1620 years. How much of this isotope remains after three (3) half-lives? A. 1/2 B. 1/4 C. 1/8*** D. None
  74. Social Studies

    In Chinese society, the merchant class ranked below the 1. farmers and aristocrats 2. landowners and traders*** 3. aristocrats and priests 4. bankers and farmers Can someone please check my answer?
  75. @ Helps meas pleases

    Your previous post was deleted because it had lots of questions -- but no answers. Please repost no more than five of those questions along with your answers. I'll be glad to check them.
  76. Physics

    a 975 N object is pulled at a constant velocity up an incline with a force of 327 n parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is the force of ...
  77. physics

    A 975 N object is pulled at a constant velocity up an incline with a force of 327 n parallel to the incline as shown in the diagram. Assume that the difference between the work output and the work input is the work required to overcome friction. a) what is the force of ...
  78. Math

    Simplify: 4^(-1/2) 4-1/2 = 1/41/2 = 1/2. check my work. On exponents, negative means reciprocal. 4(-1/2) means the same as 1/4(1/2) which is the same as 1/squareroot(4) so the answer is 1^4 no, of course not. The square root of 4 is 2 isn't it? so 1/squareroot(4) = 1/2. oh lol...
  79. Algebra-Please check

    Write y = 10^(x) as a logarithmic function Choices are log(x)10 = y log(y)x = 10 log(10)y = x log(x)y = 10 I think it is log (10)y = x
  80. Algebra 1--Please, help me!

    1. Mr. Lui wrote 15 - 5x/x^2 - 9x + 18. a. Explain what kind of expression it is. b. Simplify the expression. Show your work. c. Identify any excluded values. A: a. It is a rational expression. b. 5/x - 6 c. Excluded value: x = 6 2. Lynne can paint a wall in 40 minutes. Jeff ...
  81. Trig Help!

    Question: Trying to find cos π/12, if cos π/6 = square root 3 over 2, how to find cos π/12 using DOUBLE angle formula? This is what I got so far.. cos 2(π/6) = cos (π/6 + π/6) = (cos π/6)(cos π/6) - (sin π/6)(sin π/6) = cos^2...
  82. Algebra II

    Solve x^2>_2x+24 x^2-2x-24>=0 (x-6)(x+4)>=0 So as long as x>6, it works. But what about two negatives? Try x=-5..checks...check me on that. So it looks as if -inf<x<=-4 works, and 6<=x<inf works. check that.
  83. Physics

    The two ropes shown in the bird's-eye view of (Figure 1) are used to drag a crate 3.7 m across the floor. How much work is done by the force fk→? How much work is done by the force T1→? How much work is done by the force T2→?
  84. question about math (law of syllogism/detachment)

    Does anyone know about the law of syllogism and law of detachment. If so, can you check my work.
  85. math

    .divide AED 1380 among Ahmed John and Babita so that the amount Ahmed receives is 5 times as much as babita's share and its 3 times as much as John's share dear reiny i tried your way of doing it but i am unable to find it please help and my father gave me a different ...
  86. chemistry(check my work)

    If 6.01 g of K2SO3 dissolved in 930 mL of water reacts stoichiometrically according to the balanced equation in a reaction solution with a total volume of 990 mL, what is the molarity (M) of KCl produced? K2SO3(aq) + 2 HCl(aq) → SO2(g) + 2KCl(aq) + H2O(l) 6.01gx ...
  87. Algebra(please check my answers)

    **Fill in the appropriate vocab words that best fit into the sentences below** ~" Word Bank "~ A) central angle B) line of symmetry C) reflection D) transformation E) vertical angles F) transversal G) point H) circle ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GIVEN SENTENCES W/ ...
  88. Math, Please Help! I don't understand!

    Hi guys, please help me!1 I am having a tough time understanding this equation. Best answer goes to the person who shows there work. So... here is the equation... At the half time show, a marching band marched in formation. The lead drummer started at the point, (-2,-5) and ...
  89. MATH HELP

    I posted this yesterday and no one bothered to check it, therefore Im posting it again, please check it this time. The south edmonton pet shop has several parrots and dogs for sale. There are a total of 24 heads and 82 legs in the display cages. A) Write a system of linear ...
  90. English

    Could you please check these few sentences, please? Thank you very much! 1) Can't you say "cheat in the maths test"or is only on possible? She invites me for a walk (is it a mistake? She invited me to go for a walk) 2) She makes a living by teaching. She was sorry (is it ...
  91. Math Check

    Hi! Can someone check this for me? My teacher wants me to write the system of equations that will correspond to the final matrix. I have the matrix already, but I need help with the writing the system stuff. Thanks! Matrix: [-10 2 | 48] [-5 -6/4 |-9] My answer: 10x+2y=48 -5x+-...
  92. english

    30-day Money Back Guarantee Groom Co. electric shavers come with a 30-day money back guarantee. The only stipulation is that you use your new exclusively for 2 weeks to become accustomed with the product. If you are not satisfied, we will refund the amount on your receipt if ...
  93. Check my answers please

    I posted this yesterday and someone said i did not haveoriginal data but it is in the link. Please take out spaces h t t p: //tinypic . co m/r/309lnac/3 1. The population growth exhibited by population A to the right is what? Is is exponential? 2. Population B reaches its ...
  94. Music

    Need a word to fit the following definition. Patterns of beats by which music is measured. Rhythm? No. I'm doing a crossword puzzle and its _e_ _ rd Thank you for using the Jiskha Homework Help forum. Please check that spelling, because it looks like "metered."
  95. Health

    please check my answer thank you What is the first thing you should do if your bare hands accidentally comes in contact with a pt's blood. A report it to your doctor B wash your hands with and water C apply gloves D obtain a hep B shot I picked B
  96. english check

    A)all of the copies has been made b)none of the stores are on my way home. c)most of your friends is waiting for you inside. d)some of the promblems is for you to slove. im not really sure but it might be c.im not sure if wrong please correct.
  97. english

    I posted a question a few days ago, about Alan Kruger, and his stand on poverty and the financial crisis. I think Ms.Sue gave me a few links to check, but I can't find the post. Can someone link it to me please?
  98. English

    I still have a doubt, Could you check this sentence, please? 1) I think it would be best if our science department (head??) teacher would get in touch with you directly so that you can discuss every detail before drawing up the project.
  99. English

    Could you check these sentence, please? I don't know how to write n.2 1) 17 students from my I C look forward to corresponding with yours. On Monday I will let you know their class email adress so we can start the email partnership. 2) I measured (took is better?) my son the ...
  100. Chemistry(Urgent, please check)

    For C4H10O a constitutional isomer can be written as C-C-C-C-O-H with hydrogens also coming off of the 4 carbons. I know that this is an alcohol. I need to know if there are stereoisomers for this other than conformers. I think that there are stereoisomers because you can just...
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