Trig check my work please?

42,244 results, page 7
  1. ATTENTION WRITEACHER!

    Thanks so much for your help on my english question. I posted a reply with another question down below. You're REALLY smart so can you please check my work that i put donw below! thanks again, i really appreciate it:)
  2. College

    Any organization that produces a good or service can be classified as a business. True or False I say true. Please check my work.
  3. trig

    A city averages 14 hours of daylight in June, 10 in December, 12 in both March and September. Assume that the number of hours of daylight varies sinusoidally over a period of one year. Write an expression for n, the number of hours of daylight, as a cosine
  4. 7th grade math check

    Ok I was wondering if you could check these 3 problems please. I am suppose to set these equations equal but I am not sure if did them right. I think I accidently solved these systems as substitutions. The answers are suppose to be in coordinate pairs. 1)
  5. Pre Cal

    6-x=2x+9 If you are to solve the equation for x, first try to get the variable on one side of the equation. Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side as well): 6 - x - 2x
  6. English

    Can you please help me work out phrasal verbs related to work? When do you think will you come ...... to work? What are the possible prepositions? back .... are there others? What about "down"? Can you think of any phrasal verbs used with work (apart from
  7. Math-Trig

    Trig Questions- 1. Write the algebraic expression which shows Cos((ArcSin(4/X)), 2. Angle If Csc(-Θ)=15/4? 2. - what quadrant is it in, find the sin(-Θ), Sin(Θ), Tan(90deg-Θ), Tan(Θ), csc(Θ), Sec(-Θ+360deg), Thanks
  8. Algerbra

    how do you solve 7(3x+4)=8(2x+5)+13 expand the parenthesis...I will do the left side.. 21x + 29= Now, subtract sixteen x from both sides, and subtract 28 from both sides. I will be happy to check your work. 7(3x+4)=8(2x+5)+13 21x + 29 is 7 times 4 28? 21x+
  9. Trig

    Can you please help with this trig question: The angle of elevation to the top of a nearby mountain is 46 degrees. After walking 1 km toward the mountain, you determine the angle of elevation to be 68 degrees. How high is the mountain? Thank you for all
  10. Chem -plz check work

    so i've worked on this some more, now I am asking if someone will plz check my work 2 half cells in a galvanic cell consist of one iron Fe(s) electorde in a solution of iron (II) sulphate FeSO4(aq)and a silver Ag(s) electrode in a silver nitrate solution,
  11. chemistry

    A Work-Study student was hired to check and test some new CHEM 2020 experiments. One task was to check the reproducibility of the polarimeter. She was asked to repeat the resolution experiment by exactly the same procedure three times in order to estimate
  12. maths

    Driving to work alone. It is reported that 77% of workers aged 16 and over drive to work alone. Choose 8 workers at random. Find the probability that a) All drive to work alone b) More than one-half drive to work alone c) Exactly 3 drive to work alon
  13. math

    If a McBurger employee is expected to work four of the seven days in a week, how many different weekly schedules are possible for the employee? Please check my answer = 840
  14. physics

    At what projection angle will the range of a projectile equal to 6 times its maximum height? Just need answer, i have done all of the work and want to check my answer
  15. English and grammar

    i need someone to check my work but i cant just copy it and paste it here. i need to send it via e-mail. please give me your email add and ill send it to you. thanks
  16. Chemistry

    Ok I think I'm gettingvit I hope, I need to check my work. Given 0.0449 mols Pt Find mass 0.0449 mol Pt x 195.08/1 =8.76g Pt Am I right
  17. Trig Identities

    Prove the following identities: 13. tan(x) + sec(x) = (cos(x)) / (1-sin(x)) *Sorry for any confusing parenthesis.* My work: I simplified the left side to a. ((sinx) / (cosx)) + (1 / cosx) , then b. (sinx + 1) / cosx = (cos(x)) / (1-sin(x)) I don't know how
  18. Please help me with Trig

    Given cos 67.5° = [√(2+√2)]/2, find tan 67.5° , simplify where needed, and show work. I'm starting to learn this stuff, and I'm so confused where to start. I know they gave me the coordinate X as in cos 67.5° = [√(2+√2)]/2, and I
  19. Physics 11

    A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I used change in energy = work to find work against inertia which was 3479.85 Then I used V^2=V.^2 + 2ad to get ad=47.025 I then used W=mad to get work
  20. English

    1. She was drying her hair with the hair drier. 2. Dry your body with this big towel. 3. After bath, you need to keep your body dry not to catch a cold. 4. Study hard, and you will get high scores. 5.Practice ping-pong hard, or you will lose the game. 6.
  21. Social Studies 7th Grade

    Check my work please! Although India ahs only 16 official languages, people there speak more than ________ language. 1.30 2.50 3.100 4.800 I belive the answer is 1.
  22. Check my american gov. work

    The group that has the sole power to begin impeachment hearings is----- A. Senate B. Supreme Court C. House of Representatives D. The president's Cabinet Answer: A
  23. Uncountable nouns

    1.work 2. skin 3. sand 4. rain 5. postcard 6. traffic 7. accident 8. air 9. cloud 10. information 11. happiness 12. news 13 furniture 14. entertainment Please help to check the above whether they are all correct, thanks & regards.
  24. geography..please check my answers!!!

    which pair of basic questions guides geographers in their work? where are things located? and Why are they there? **** What is the climate? and Why was it changed? When did Earth form? and What is it made of? Who lived where? and When did they move?
  25. english

    1. "Similarly", "on the other hand", and "however" are signals that the author of a source is using which of the following text structures? (1 point) sequencing comparison and contrast cause and effect problem and solution check my work my answer is C
  26. Chem Check Please!!!

    Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Show work please! Thank you!!!
  27. Chemistry

    Can you please help me to work out the addreviated structural formulae of hydrolysis of tocainide? Won't it be the -NH2 group that hydrolyzes? ArNH2 + HOH ==> ArNH3^+ + OH^- Check my thinking. Thanks That is exactly what I thought it would be. Thanks
  28. Algebra HELP :(

    If you write a check without enough money in the bank, a certain store will charge you a penalty if the check is returned to them from the bank. The penalty is 5% of the amount of the check plus a $10 processing fee. Let n= the amount of the check and p
  29. Physics - Check Answers ASAP

    Could someone please check over my answers? I'm not very good at physics, and therefore am not sure if I got all of them correct. 1. A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 60.0 m up
  30. Spanish Work Check

    Can someone check my work and tell me if they're grammatically correct and such? Instructions: Be creative and write a sentence for each of the following verbs using the future simple tense. 1.(ella) Venir Ella vendrá mañana a mi casa. 2. (nosotros)
  31. Precalculus

    I've tried many times to get the equation to balance using trig identities like half-angle formulas, power-reducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the
  32. English-CHECK PLEASE

    Ok, I figured this out (I think) but can you please check? Don't worry. I can carry the tent all by myself because it is so light. I do not even need a lantern it is so light outside. In these sentences, the word "light" is used as a: A:homophone
  33. Math

    Ok I need help to figure out how to solve this problem 4 working move into town looking for work. A local business offers them 200 hours of work. The catch is, they have to work the same number of hours as they do days. I.E. if they work 8 hours they have
  34. English

    Writeacher, could you please check these examples? Thank you. 1) 'm glad you moved into a new house. I'm pleased you moved house. We were having dinner when the lights went off/out. We didn't 2) What kind of approach can a person have to work? He can work
  35. java programming

    You need to provide more than a yes or no answer for this question. Consider both the selection sort and the bubble sort. If these algorithms will work with duplicates explain why they will still work. If they will not work, explain why they will not work.
  36. Calculus- continuity

    Discuss the continuity of f(x)= sin x/x^2 - 9 That is, state where is it continuous/discontinuous and why. Here was my original answer. sinx is cont. because it's a trig function. It's cont. at -2pi, pi, -pi, and 2pi. x^2 is cont. because it's raised to a
  37. Math

    Is there a case when you might prefer algebraically over graphically solving a system? Why or why not? Think about the type of possible solutions and how the method might affect your choice. My answer: A case when I would prefer a algebraically would be
  38. Grammar

    A thesis statement clarifies the main point an essay will make. 1. True 2. False I answered true. Please check my work.
  39. Chemistry

    a 175.0 ml solution is made up of 20.0g of titanium(iii) chloride and H2O. What is it's molarity? I am just trying to check my work. M= 0.1296/0.175 =0.740
  40. algerbra

    can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the
  41. algerbra

    can someone check my work for this question? the question is to graph the function of square root of x plus 2 with the plus 2 not being in the square root my x values were 0,1, 4, 9, and 16 my y values were 2, 3, 4, 5, and 6 the next part says to write the
  42. calc check: hooke's law

    A force of 27N is required to maintain a spring stretched from its natural length of 12cm to a length of 15cm. How much work is done in stretching the spring from 15 to 25cm? and this is what i did.. please check to see if i did it correctly.. thanks :)
  43. trig integration

    i'm having trouble evaluating the integral at pi/2 and 0. i know: s (at pi/2 and 0) sin^2 (2x)dx= s 1/2[1-cos(2x)]dx= s 1/2(x-sin(4x))dx= (x/2)- 1/8[sin (4x)] i don't understand how you get pi/4 You made a few mistakes, check again. But you don't need to
  44. Algebra 1

    You can mow your whole lawn in 45 minutes, and your neighbor can mow your whole lawn in 30 minutes. How long would it take you to mow the lawn together? Clearly show and explain each step for full credit. Using rational applications A. Write an equation
  45. pre algebra

    Mr Chee deposited $80 into his checking account. Then, after writing a $23 check for gas and a $90 check for his child's day care, the balance in his account was $67. How much was in his account before he made the deposit? How would you solve and check the
  46. trig

    Okay, I've been getting some of these, but I can't seem to verify this identity... any help? Here's the problem Sin(x+y) + Sin(x-y) = 2sinxcosy Okay, I've been working on the left side, and distribute, getting: Sinx + Siny + Sinx - Siny And, the sinx's add
  47. Math - Please Help Check My Answer

    Please help me with the following question: A student attempts to solve for c in the equation below. Which statement best applies to the work shown below? 3c + 6 - 4c - 12c = 7 -13c + 6 = 7 -13c + 6 + (-6) = 7 + (-6) -13c = 1 c = -1/13 A. The student
  48. Physics Conservation of energy

    A box is pushed across the floor against a constant frictional force. The box is pushed across the room to the east in 30 seconds and returned to its starting point (pushed to the west) in 60 seconds. Which of the following is true about the work done and
  49. Math

    How do I solve this? tan^2x= 2tanxsinx My work so far: tan^2x - 2tanxsinx=0 tanx(tanx - 2sinx)=0 Then the solutions are: TanX=0 and sinX/cosX = 2 sin X Divide through by sinX: we have to check this later to see if allowed (ie sinX is not zero) cosX=1/2
  50. English

    Can some one please check my work? Thanks! From the words below supply the words needed to complete the sentences. occult; serene; partisans; fervor; fledgling; blasphemous 1. Even though he was a FLEDGLING writer, his work suggested he was a professional.
  51. Chemistry

    You work at a fastr food restaurant 5 days a week, 6 hours a day, and are paid $840 every two weeks. Each hour you wrap 184 burgers. How many burgers will you have to wrap to make a million dollars? I got $7142857 from the proportion: $1,000,000x 2
  52. physics

    I had wrote that was because I was told that in the beginning of the spring being wound the PE=KE. Can I check a concept question, The amount of work required to stop a moving object would be equal to the mass of the object times it intial speed due to
  53. algebra--distributive

    how would you do this prob. negative4-(5y+6) = negative 7y+3 thanks. happy halloween I'm going to assume your problem is this: -4 - (5y + 6) = -7y + 3 If that's the case, distribute the negative over the terms in the parentheses first: -4 - 5y - 6 = -7y +
  54. math-check my work

    I have a bag of m&m's with 52 in it and on the pkg it states it weighs 47.9g. If I divide by 52 it gives me .92g per m&m. To find out what the mass is of a mole of m&m's do I Multiply 6.02 x 10^23 x .92g for my answer?
  55. PHYSICS HELP

    Please check to see if these statements are right. Through the process of doing work, energy can move between the external world and the system as the result of forces. I believe this is true. Please verify. Yes, true.
  56. English

    In any academic writing, it is appropriate to use the word you, as in: When you read the research, you know that the death penalty does not deter crime. True False I say false. Please check my work.
  57. Math ~ Check Answers ~

    Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the radius is 23 yd My Answer: ???? •Circumference = (2) (3.14) (23) •3.14 x 2 x 23 = 144.44
  58. Algebra

    Simplify 1/r=1/x+1/y Multiply both sides by rxy. Then simplify. I will be happy to check your work. That is as compact and simple as the relationship can be written. Are you looking for an explicit formula for x, y or r?
  59. Algebra

    How do I solve this For (-x)? (Do I just make -x equal 1 or 2?) I’m suppose to solve the equation by elimination. (Can someone give me steps to solving it and I’ll try to do it and you guys check my work?) 7x-9y=21 -x-18y=-3
  60. @Anionymous

    You posted an entire test and all the answers, which is one of the kinds of posts Jiskha's owner is regularly contacted to remove. Please post only the 4 or 5 questions you are least sure of, plus their answer choices and your selection. Then someone here
  61. physics

    8.01 homework. I have difficulty with question no. 2. all my equations do not work-Rough Surfaces. Also, the period of oscillation got part a the rest is confusing and my answers do not check out. I thought this was a very difficult assignment to say the
  62. info lit

    please check my work? Scholarly journal articles are written: A. By experts in a subject field B. By lower division college students C. For a general audience D. By reporters my answer is: A
  63. English

    1. What did Bora want to do? - She wanted to do volunteer work. 2. Where do her friends usually volunteer? - They usually volunteer at libraries or town halls. 3. Did Bora want to volunteer at a library or a town hall? - No, she didn't. 4. Who told Bora
  64. Trig

    A force of 323 newtons makes an angle of 54 degrees and 20 minutes with a second force. The resultant of the two forces makes an angle of 39 degrees forty minutes with the first force. Find the magnitude of the second force. I have the answer, 814.3022,
  65. English

    Listening to the explanations of the sports, let's play the quiz game. You should work in pairs. I will distribute sheets of paper. One should read the explanation of a sport. Then the other should guess what sport it is. Read all the explanations of the
  66. Algebra-help

    Jordan decides to start a garden care service. He plans to charge $20 for the first hour and $10 for each additional hour that he spends working on a garden. He works 5 days a week and takes care of one different garden each day. How many hours will he
  67. English

    Can some one please check my work? Thanks! From the words below supply the words needed to complete the sentences. occult; serene; partisans; fervor; fledgling; blasphemous 1. Even though he was a FLEDGLING writer, his work suggested he was a professional.
  68. Calculus

    let f(x)=x^3(e^-x) Answer using calculus, use graphing calculator only to check work. a) Find the local and global extrema of f. b) Find the intervals where f is increasing/decreasing. c) Find the inflection points of f. d) Find the intervals where f is
  69. ap physics

    can you check my answers? 2.is more work required to bring a fully loaded truck up to a given speed, than the same truck lightly loaded? defend your answer? -more work is required to bring a fully loaded truck up to a given speed because it is doing more
  70. basic geometry

    could someone check my work. The width of a rectagular is one -half the length. the perimeter of the rectangler is 72 inches Find the length of the picture 2L+2w=72 2L(1/2)+2w=72 2L(5)+2w=72 10L+2w=72 12=72 L=12/72 L=6 answered below
  71. Busienss

    Hello My name is Sara and i,m work in marketing and i have get offer from some company from all world about some product for import and export and i do like to know how i can check this company its real or fake wait your reply Thanks
  72. Mathematics

    9A. Solve the inequality.Show all steps.15 > 7 - t/3 9B. Check your work. Hi. I'm not trying to cheat. I don't understand the equation. If you see another question by me with the same question, I'm sorry. I had hit submit and it wasn't there. Sorry.
  73. French for Sabrina & Alex

    Sorry, but my rescue animals MUST be fed. My eyes have had it for right now. Perhaps after I take care of my animals, I can see better. At least, I WILL be back and check your work before I go to bed. Sra (aka Mme)
  74. English

    Please check my work. Identify whether if this sentence is complex, an exclamation, declarative, or interrogative. The car broke down, but a rescuer van arrived within minutes. ----- Complex
  75. science

    percentages: to use a machine,u must do the work on the machine called input work. the machine then foes the work on and object called output work. not all the input work gets transmitted to output work. some work is lost due to friction in the machine. if
  76. trig

    it says to verify the following identity, working only on one side: cotx+tanx=cscx*secx Work the left side. cot x + tan x = cos x/sin x + sin x/cos x = (cos^2 x +sin^2x)/(sin x cos x) = 1/(sin x cos x) = 1/sin x * 1/cos x You're almost there. thanks so
  77. business math

    Compute the total amount to be repaidon a $1920 loan at 8% for 135 days. Base your calculation on exact interest(365-day year). I'm getting $2335.29. Can you check my work?
  78. English

    Could you check these sentences, please? Thank you for helping me! 1) Here is the translation I did on the presentation of the school as received (in Italian) from..... I'm attaching it to this email together with the things he still has to complete. 2) He
  79. Algebra 2 (check)

    I have some problems that I've answered and I need someone to check to see if I'm right. Im just posting the questons and my answer,if its wrong I'll post my work,so here it is bear with me please and thank you. 1)name which sets of numbers to which -28
  80. Trig

    Solve each equation for exact solutions over the interval [0,360)where appropriate. Round approximate solutions to the nearest tenth degree. Sin^2Theta=Cos^2Theta+1 My Work: Using double angle Identity I subtract 1 to other side therefore:
  81. math,correction

    can someone correct these for me i'll appreciate it thank. dirctions: solve 3x-7=2x+8 my answer: x = 15 directions: solve 2/5x=-10 my answer: x = -25 Directions: solve -3(x+1)=2(x-8)+3 my answer: x= -3.2 1 looks ok. Show your work on 2 and 3 and we can
  82. Physics check

    I just want somebody to check my answer on this problem please :-) There is a box which weighs 1000 kg. There is an applied force acting upon it with a force of 20000 N (horizontally). The mu is 1.2. What is the acceleration (again, horizontally) of the
  83. Calculus

    Can someone check my work and answer? Evaluate the integral from -1 to 0 of (4x^6+2x)^3(12x^5+1)dx My work: let u=4x^6+2x dx=du/24x^5+2 now we have the integral from -1 to 0 of u^3(12x^5+1)(du/24x^5+2) Simplifies to the integral from -1 to 0 of
  84. Physics question help/ check my answers

    The middle two question please check my answers and tell me if I am correct or if there is something I am missing. The first and the last question I need help to understand and complete it. Thank you in advance!!! 1. What is the electric force between a +2
  85. algebra

    Could someone please check my work. what is the slope of the line that passes through the given points?(2,12( and (6,11) -1/4 (my choice) 1/4 4 -4 My work: 11-12/6-2=-1/4 what is the slope of the line that passes through the given points? undefined( my
  86. Math check answers please

    Sorry to bug again but can someone check my answers please thank you. 1. Simplify the expression 3w-10w A. 13w B. -7w C. -7 D. 7w 2. Y+2y+3z A. 2y+3z B. 3y+3z C. 2y^2+3z D. 6yz 3. 6r+r-5r A. 2r B. 1r+r C. 0r D. 7r-5r 4. 5x+2(x+6) A. 7x+6 B. 7x^2+12 C.
  87. how to write a check

    this is my second time writing a check, and I know how, but How do i write $1,464.00 in words on a check. Is it "one thousand four hundred sixty four dollars" Is it hundred or hundreds? Do I need to say something about the zero cents?
  88. Business math

    Compute the difference between the ordinary interest and the exact interest for a loan with a principle amount of $1100 at 12 percent for 120 days. I'm getting $0.60 Can you check my work?
  89. Variation

    Please check my work, the answer I am suppose to get is 17.5, but instead I got 2.5. Solve the problem. 66. y varies jointly as a and b inversely as the square root of c, y=24 when a=6,b=4, and c=49. Find y when a=2, b=5, and c=16. -I got: y=kab/ sqrt of
  90. English Grammar: Verbs

    What are the verbs in these sentences? I just want to check my work. Gasping, Matty called for his gift to come. There was no sense of how to direct it. He became aware, suddenly, that he had been chosen for this. Thanks in advance!
  91. Chemistry

    The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90°C/m)? I worked this problem for someone just a couple of days ago. delta T = kf m kf = 4.90 m =
  92. calculus

    Integrate x/(x^2 + 4) dx via trig substitution and by u=x^2+4 substitution. Show that results are equal. Via trig substitution of x=2 *tan t, I get: 1/2 * tan^-1 (x/2) + c Via u = (x^2 + 4) substitution, I get: 1/2 * ln |x^2 + 4| + c How are these equal?
  93. English

    Posted by rfvv on Wednesday, October 27, 2010 at 8:52am. 1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do
  94. Business Law

    Please help. The restaurant provides catering services to local businesses. Corporate clients paid by check or electronic transfers. A new customer paid for a catering order with a check for $575, made payable to the restaurant. Woods took the check to the
  95. algebra

    Please check my work and correct if necessary. Thank You. Using factoring and zero-product property, this is my solution for 9^2-30r+21=-4. 9r^2-30r+21=-4 9r^2-30r+25=0 (3r-5)(3r-5)=0 r=5/3
  96. algebra

    Find the value of y for a given value of x, if x varies directly with x. If y=39 when x=-117 what is y when x=-132 my answer y=k*x 39=k*-117 39/-117=k k=-0.3 y=k*x y=-0.3*-1.32 y=-3.96 can someone please check my work
  97. math

    if 6% of a number is 14, what is 13% of the number Let X = the number 0.06X = 14 Solve for X. Then 0.13X = ?? Post your work if you want us to check the answers.
  98. Math

    If we multiply "a" and "b",when will: a. the product be larger than both "a" and "b"? b. the Product be less than "a"? c. the product be less than "b"? d. the product be less than"a" and "b"? e. the product be greater than "a"? f. the product be greater
  99. Math check my answer

    What music plan is a better deal? site A: $29 per month plus .80 cents per download site B: $17 per month plus $1.19 per download write an equation and show how many downloads make site A a better deal. My answer:: .80x + 29 > 1.19x + 17 after all my
  100. physics problem-check

    do i have the following answer right? a tv set is pushed a distance of 2m with a force of 20 N that is in the same direction as the set moves. how much work is done on the set? would it be (2 m)(20 N)= 40 J