Trig check my work please?

90,437 results, page 3

  1. Math 116 algebra please check

    Simplify 6[-73-(-19-83)]=174 Please check
  2. Spanish-Please check

    Please check-Thank you I come from the library. Yo vengo de biblioteca.
  3. precalc

    Suppose that z1=6-8i. Find: A. The Trig Form of the complex number z1, where your theta is in degrees. B. The Trig form of z1*z2, where z2=5[cos(60degrees)+isin(60degrees)] C. The Trig Form of (z1)^4
  4. Math Help, Check My Answers Please

    Please check my answer, I wanna make sure I get it right. 4.Personal bias can cause a scientist to misinterpret an observation or the results of an experiment. True False*****
  5. Algebra 2

    solve each equation. check for extraneous solutions. sqrt(2x+1)+sqrt(2x+6)=5 please show work!!!!!
  6. Algebra 2

    solve each equation. check for extraneous solution. sqrt(3x+4)-sqrt(2x-7)=3 please show work!!!!!
  7. grammar please help!

    I still need help on 1 and 2. Identify the object of the preposition in each of the following sentences. 1. Ashley and her father arrived home from work. a. and b. father c. from d. work 2. Ashley put her journalism books in the new bookcase. a. bookcase b. put c. new d. in ...
  8. Math

    Solve the equation for d 0.2(d-6)=0.3d+5-3+0.1d I had d=-16 Work: 1. distribute 2. 0.2d-1.2=0.3d+5-3+0.1d 3. 0.2d=0.4d+3.2 4. -0.2d=3.2 5. divide 6. d= -16 I even did a check 0.2(d-6)=0.3d+5-3+0.1d 0.2(-16-6)=0.3(-16)+5-3+0.1(-16) 0.2(-22)=0.3(-16)+5-3+0.1(-16) -4.4=-4.4 Is ...
  9. math (please check my work)

    find the equation (in slope intercept form) the line passing through the points with the given coordinate (-1,-1) (-3,-3) -3-(-1)/-3-(-1)=2 y+3=2(x-(-3) y+3=2x-6 -3 -3 y=2x-9 is what i got is this correct?
  10. Physics

    Will you check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) / (4m/s) =12 kg A 1-...
  11. physics

    Will check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) / (4m/s) =12 kg A 1-kg ...
  12. college alg

    the function f(x)=6x+9/3x-7 is one to one. find its inverse and check your answer. f^-1(x)=? please show work
  13. Math

    Write the equation in standard form using integers. Can someone please check my work? Ax+By= C Equation: y- 4 = -2(x - 3) y-4 = -2x + 6 +2x +2x 2x+y-4=6 +4 +4 2x+ y=10
  14. precalculus

    can you please check my work? 7. Find the equation of the parabola y=ax2+bx+c that passes through the points(0,6),(-2,2), and(3,9/2). y=ax2+bx+c 6=a(0)2+b(0)+c 2=a(-2)2+b(-2)+c 9/2=a(3)2+b(3)+c 6=c 2=4a+(-2b)+6 9/2=9a+3b+6 -4=4a-2b -3/2=9a+3b a=-1/2, b=1 y=(-1/2x)-x+6
  15. algebra

    i have two answers to this problem so am not sure which way I need to do in or should say the order i should do it. lease help??????? problem is 7x-5+3x=6+x-10 what is the order to work this out there is no brackets to this problem 7x-x+3x=6+5-10 6x+3x=11-10 8x=1 ------- 8 8 x...
  16. trig

    Prove the identity. (must work with left side) (1-2sin(x)^2)=(cos(x)^2)
  17. Trig

    How do I do this? I punch the numbers into my calculator, and they don't work. B=sin^-1 (12/7 sin42\[Degree])
  18. pre cal\trig

    Find the following cot(Arccsc 25/24) show your work
  19. trig

    Solve for x if sin2x=cos(x+60 and x€ [-90,180].show all work details
  20. TRIG

    determine the sum of the first 100 even integers SHOW YOUR WORK
  21. TRIG,

    Can you solve and show me the work in these two equations? cos(3x)=-1 tan (theta)=-1
  22. calculus

    1. what trig function has an amplitue of 1 and negative values for angles between π/2 and π? 2. what trig function never crosses the x-axis and has a value of 2 at π/6? are these correct? 3. what trig function has a period of π and is undefined for -π/...
  23. Physics-please check my work

    Can you check my work please? true/false 1.) force is a scalar quantity: *FALSE 2.) the object on which a force acts is called the system: *TRUE 3.)The specific, indentifiable cause of a force is called the system: *FALSE 4.) A force can not exist without an agent and a system...
  24. trig 30

    For csc^2 A-1/cot A csc A, what is the simplest equivalent trig expression? The answers I have to choose from are sin A, cosA, tan A or csc A, but I don't know how?? csc theta= 1/sin theta but its ^2. Help please I don't even no where to begin
  25. English

    (1) Are you doing any volunteer work? How about your friends? 1. Yes, I am. They are doing (some) volunteer work, too. 2. No, I'm not. They are not doing (any) volunteer work, either. (2) Do you do any volunteer work? How about your friends? 1. Yes, I do. They do (some) ...
  26. check my work on derivatives

    Can someone check my work? So, I took the derivative of (1-x^2)/((1+x^2)^2) I used the quotient rule ((2x((1+x^2)^2)-2((1+x^2)^2)(2x)(1-x^2))) / ((1+x^2)^4) Then I simplified it (2x+2x^2 - 4x((1+x^2)^2)(1-x^2)) /((1+x^2)^4) Then I simplified by factoring out some numbers 2x(x^...
  27. Algebra-Please check work

    I've reworked this and added on is any of it correct?Totally confused-learned this today and I don't get it-Please help Write the standard form of 9x^2 + 4y^2-72x+16y+124=0 I think the first step is to take the constant to right side so I have: 9x^2 + 4y^2-72x+19(x^2-8x+16) + ...
  28. trig

    Write the expression and evaluate. There should only be one answer which should match the range of the inverse trig function. Sec^-1(-2) sec^-1(-sqrt2) Cos^-1((-sqrt3)/2) Tan^-1(-sqrt3) Could someone explain how to get the answer as well please.
  29. Pre-Calc/Trig...

    Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2
  30. Algebra II-Please check my solution

    Solve by elimination method-thanks fro checking my work 2x + 3y= 2 multiply this equation by 2= 4x + 6y = 4 4x-2y = -28 4x + 6y = 4 -4x -2y = -28 8y = 32 y = 4 2x + 3(4) = 2 2x + 12 = 2 2x + 2-12 2x = -10 x = -5 solution = (-5,4)
  31. Grammar

    An introduction must contain a thesis statement. 1. True 2. False I answered true. Please check my work
  32. Algebra-Please check

    Please check- sqrt of 2x + 15 = x Answers: -5.3 -3.5 -3 5 I think according to my calculations it would be 5, correct? sqrt root of 7-x = 3-solve for x Answers: -2 2 4 -4 My choice would be 2 Is that correct- I squared both sides and came out with 7-x = 9 and then x = 2 Thank ...
  33. algebra

    Please check my system of linear equations using any algebraic method. Show the check,if possible. 8x-6y=12 / 12x-9y=18 8x-6y=12 (eq.1) 12x-9y=18 (eq.2) 4x-3y=6 (eq.1) 4x-3y=6 (eq.2) y=4x-6 / 3 Check: Thank you for your help.
  34. Math 116 algebra please check

    Multiply 1/7×(-3/7)=-3/49 Please check
  35. To Brady, please check

    Please check my answers down below.
  36. English

    Can you please check these sentences and tell me which one are possible? Thank you. 1) He didn't let on the secret to anyone. He didn't let out the secret to anyone. 2) He didn't let on that he knew Mary's secret. He didn't let out that he knew Mary's secret. 3) Write 5 ...
  37. Math-truth table, please check my work!

    p -> ~q , p -> q Are these Equivalent statements? This is my try. Please let me know if these truth tables are correct. p -> ~q p q p -> ~q p q p -> q T T T T T T T F T T F F F T F F T F F F T F F T The statements are not equivalent.
  38. Algebra 2

    Can someone check my work please? I tried my best on all the problems but I still don't understand excluded values and how to simplify rational expressions. Thank you in advance for any help! 1)6x^5/2x^3 6/2 = 3 3x^5/x^3 x^5-x^3 = x^2 3x^2/1 2) (2x+4)+(x^2 +2x) 2x+4: 2(x+2) x^...
  39. physics

    Calculate the work required to be done to stop a car of 250 kg moving at a speed of 18km/hr? answer is right or not please check Mass =250 kg Velocity = 18kg = 18 x 1000/60 x 60 = 5 m/s KE = ½ mv x v = ½ x 250 x 5 = 125 x 5 = 625 J Therefore the counter back this force we ...
  40. English

    Can you please check these sentences? I just need to know if they are ok. 1) When do you usually get off work? He took a day off work to drive me to the airport. 2) The manager has just laid off Peter’s father. Can you put me through to the manager, please? He has taken on ...
  41. 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.
  42. Algebra

    - ok... we keep getting this one wrong: Solve the following equation for x. Write your answer as a fraction in simplest form. -6(x-5)=-2x-8-6(3x-5) What is it you don't understand about this? Clear the parentheses, combine terms, solve for x. Ive been doing that but i keep ...
  43. trig help again i cant get any of these

    sin^4cos^2x=(1/16)(1-cos 2x)(1-cos4x) work one 1 side only!
  44. Trig

    Half angle identities Find exact values of a) cos 1/2 b) sin 1/2 c) tan 1/2 based on: cos = 1/5 greater than 270 deg less than 360 deg. I get a) - rt 3/5 b) rt24/5 and c) does not work out at all .... Help please.. book says for answers a)-rt15/5 b) rt10/5 c) -rt6/3 How do you...
  45. trig! check my answe please

    An advertising blimp hovers over a stadium at an altitude of 125 m. The pilot sights a tennis court at an 8o angle of depression. To the nearest meter, find the ground distance in a straight line between the stadium and the tennis court. I set it up 125/tan8, knowing its a ...
  46. Trig Proofs

    Please Help: please solve this proof: cosx- cosy = -2sin(x+y/2)sin(x-y/2)
  47. Trig.

    Please solve this equation. As you write down the steps, please give me a description on what you did. y^3 - 16y^3/2 + 64 = 0
  48. Grammar

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

    Identify and list one error in the sentence below: The two boys were was playing soccer. Error: was Please check my work.
  50. 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?
  51. English

    Match each vocabulary word with the letter corresponding to its correct definition. A. Looted B. Irritated C. Unselfish D. Nonconformity 1. Altruistic- C 2. Deviation- D 3. Piqued- B 4. Pillaged- A Please help check my work.
  52. Physics Problems

    Will check my work and help me with the last two problems please? A 4 kg ball has a momentum of 12 kg m/s. What is the ball's speed? -(12 kg/m/s) / 4kg=3m/s A ball is moving at 4 m/s and has a momentum of 48 kg m/s. What is the ball's mass? -(48kg/m/s) / (4m/s) =12 kg A 1-kg ...
  53. To sam!

    Was the five part unknown question for compounds A through E yours? If so, did you get it answered ok? no it was not mine! can you please check my math? can you please check my math?
  54. Spanish 7th grade-Please check

    Please check. How would I say "I feel like drawing. Would it be: Yo tengo ganas de dibujar.
  55. Health care please check answer

    Please check my answer thank you Verifying the accuracy of HCPCS codes is an important function in what ? I think that it is maintence of chargemasters
  56. Health please check my answer

    Please check my answer thanks True or Faslse The term used to describe why medical treatment is necessary is procedure I say False
  57. Math please check answer

    please check my answer :) The monthly payment of a $100,000 mortgage at a rate of 8 1/2 % for 20 years is 8678.23
  58. algebra

    Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please
  59. algebra

    Check this problem for me do I have negative sign right with the answer. -1(-1)+-5-5=-2/-10==-1/5 the one on top and the -1(-1) and on the bottom is -5-5. so check this answer for me. Please, Please
  60. grade 12 chem - check my answer again please

    Hi, please check my work: In an experiment, 23.4 g of FES are added to excess oxygen and 16.5 g of FE2O3 are produced. The balanced equation is: 4FeS + 7O2 --> 2Fe2O3 + 4SO2 Calculate the % yield. My Answer: nFeS=23.4g/87.92 g/mol =0.266 mol 4mol FeS / 0.266 mol = 7mol O2/ ...
  61. check my set up please, trig

    Sarah holds the end of her kite string 5 feet off the ground. The kite string makes a 43 degree angle of elevation with the horizontal and the kite is 105 ft. off the ground. How long is the kite string to the nearest tenth of a foot? cos43=100/x ?
  62. English please check my answer

    please check to see if I have the right answer thank you The patient had a radiogram performed. What doed the root word indicate I think it's b
  63. algerbra

    could you please double check my work question:find the roots of the equation 2x^2+8x=12 by completing the square. leave answer in simplest radical form. work and answer: c=(b/2)^2 c(4/2)^2=4 2x^2 +8x=12 divide everything by 2 x^2 + 4x=6 x^2+4x+4=10 (x+2)(x+2) square root of (...
  64. chemistry

    For the adiabetic expansion of an ideal gas a) does the gas do work? B) doesd the internal energy of the gas increase, decrease or remain constant? C) what happens to the temperature? Please check my answers A) yes the gas does work because it is expanding B) internal energy ...
  65. Math Please Check

    Please check my answers! Thank you! Simplify the following expressions. Collapse “x” terms, and/or simplify fractions and exponents. 1.) (12/5) / (36/20) = 4/3 2.) x^13*x^3 = x^16 3.) x^4 / (x^2)^3 = 1/x^2 4.) x^-3 / x^2 = x^-5 5.) (x^2-8x+16) / (x-4) = x-4 6.) x^(-1/3) / ...
  66. French 1

    Can anyone check my french work please??
  67. Math - Please Check My Answers

    Please help me by checking the following answers for me(There are 3 problems that I need someone to check). 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x-6...
  68. 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 your help.
  69. PERSON!!!!!

    I have no money at all no credit card or checks or anything! So can someone please tell me where to get a free background check or free record check?? I really need this please!!
  70. 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
  71. English

    Could you please check my sentences? Thank you. 1) What organization does the interviewee work for? 2) Why do endangered species serve as umbrella species? What poses the most serious hazard for the North Atlantic whales? 3) Which is the most successful way of combating risks ...
  72. work (physics)

    a 25 kg object is accelerating from rest to a distance of 6 m in 4 seconds across a level floor. The friction is 3.8 N - what is the total work........ i started off by trying to find fa but it seems to give me an absurd answer.. maybe if u could help me by telling me the ...
  73. MATH PLEASE CHECK IT!!2

    m-2/m-5*m+5/m-2=-1 If your problem is this: (m - 2)/(m - 5) * (m + 5)/(m - 2) = -1 (m - 2) cancels out in both the numerator and denominator on the left-hand side since you are multiplying. That leaves us with this: (m + 5)/(m - 5) = -1 To solve for m: Multiply both sides by (...
  74. Health please check my answer

    Please check my answer thanks The radiologist is able to evaluate the movement of body organs by doing what procedure A. Ultrasound B. MRI C. Film survey D. Fluroscopic exam I picked A
  75. math

    Use the distributive property to write an expression that is equivalent to the example below: 5(2x + 7) I think my answer is... 45.....How I got this answer was 5 x 2 + 5 x 7=45 10 + 35 = 45 Can you please double check my work?
  76. math, trig

    Graph one period of the following function. Show all work . y=2sinx+2cosx
  77. Chemistry(Please check)

    1) The Ka for acetic acid is 1.8e-5. What is the pH of a 3.18M solution of this acid? I did 1.8e-5 = x^2/3.18 x=sqrt 1.8e-5 X 3.18 = 7.56e-3 pH=-log(7.56e-3) = 2.12 The pH is 2.12 2) At 25 degrees celsius, the pH of a 1.75M NaCN solution (the Ka for HCN is 4.0e-10) is ? 4.0e-...
  78. drwls please check

    Can you please check my physics posts. Thanks!
  79. Spanish-Check please! I need help

    Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my translation I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?does this ask what I...
  80. Foreign languages

    Can you please check these sentences, Writeacher? 1) We...... (sit) in the sun for ... when she (tell) us to get inside. 2)We had been sitting in the sun for about half an hour when she told us to get inside. 3) Peter confessed to eating all the cake. (Peter/confess) (shall I ...
  81. Answer Check Please

    Andy and William work together to build a toy house. It will take William 5 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finish their work. If William works alone, how many hours will it take to finish his work? I say 15 is the answer.
  82. trig

    finding the equivalent polar equation 2x+3y=6 I got r=6/2cos(theta)-3sin(theta) can anyone check plz
  83. trig

    What kind of reflections are the following trig functions? y = 3cos(x-1) y = sin(-3x+3) y = -2sin(x)-4
  84. trig

    What is the shift along x of the following trig functions? y = (3sinx/2) + 4 y = -2sin(x)-4 y = sin(-3x + 3)
  85. trig

    express the trig. ratios sinA,secA n tanA in terms of cotA.
  86. Trig

    Find (if possible) the trig function of the quadrant angle. sec 3pi/2
  87. trig

    What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
  88. trig

    What kind of reflection does the trig function y = cos(4x/3 minus 1) have?
  89. trig

    how do i do this? give the signs of the six trig functions for each angle: 74 degrees?
  90. trig

    simplify to a constant or basic trig function.. 1+tan(x)/1+cot(x)
  91. trig

    find the 5 trig ratios when sin theta = -5/13 and lies in quadrant 3
  92. Pre-Calculus

    Find the values of x for which the line y=2x intersects the parabola y=(x-1)^2+1. So I set the equations equal to eachother, and solved for x using the quadratic formula. The solution I got was: x=3.41 and x=0.59. Could someone please check my work.
  93. Math Check please

    Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,3.5) <---- (0,-4) (0,7) (0,-3.5) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom ...
  94. Trig

    Does anybody know a good website that will help me with finding the six trig functions of a point NOT on the unit cricle?
  95. trig

    use the unit circle to find the exact value for all the trig functions of è=2ð/3.
  96. Precalculus

    How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?
  97. Trig

    find the exact values of the six trig functions of angle... sin(-315degrees) how do i do this?
  98. Trig

    I need help with these kind of problems! Can someone tell me how to work this problem out? Given tan0=2 square root of 5 over 4, and sin0<0. a. cos0 b. csc0 The 0 after tan, sin, cos, and csc stands for angle. The 0 after the < stands for negative or less than. I know it...
  99. 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
  100. Algebra

    Suppose a triangle has angles A,B, and C. Angle C is the right angle. Find the measures of the other sides to the nearest whole number. < means angle symbol. 1.BC=9,m<B=72 degrees I got angle AB=28 and angle AC=29 To solve these problems you find either the sine, cosine...
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