Trig check my work please?

42,204 results, page 35

  1. Math

    Naomi and 50 red beads and white beats the number of red beads is one more than six times the number of white bees how many red beans does Naomi have. What does one more than six times the number of white beads mean coming from me Alexis I do not know how to show my work you ...
  2. statistics

    A STAT 200 instructor is interested in whether there is any variation in the final exam grades between her two classes Data collected from the two classes are as follows: Her null hypothesis and alternative hypothesis are: (a) Determine the test statistic. Show all work; ...
  3. chemistry

    N2 + 3H2 --> 2NH3 how many grams of hydrogen are needed to react with 50 grams of nitrogen? Three moles of H2 per one mole of N2. How many moles of N2 is 50 grams? 1.79 moles is 50 grams. You do these problems in steps. Step 1. Write a balanced chemical equation. You have ...
  4. algebra

    Can someone please check my work on this problem? For some reason, I get the feeling that I did it wrong. sqrt=square root (by the way) 3-sqrt10 sqrt5+sqrt2 -------- * ---------- sqrt5-sqrt2 sqrt5+sqrt2 (3-sqrt10)(sqrt5+sqrt2) = ----------------------- 5-2 3sqrt5+3sqrt2-sqrt50...
  5. spring physics check work plz

    A block (mass 0.5 kg) is hanging from the end of a spring. The spring is observed to stretch by 20 cm in order to come to equilibrium. a) What is the spring constant? F=-kx F=mg=.5(9.8)=4.9 N and x=-.2meters -4.9/-.2meters=24.5 =k should the constant be negative or positive ...
  6. Mathematics/pre-algerbra

    how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x See previous post. i still don't get it sorry Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16 = x/20 Take 12 * 20...
  7. Physics - check this work for horizontal displacem

    A 1.5kg melon is placed on top of the post. A girl lying on the ground fires a 500g arrow at ground level with velocity of 20m/s, 60deg above the horizontal, and hits the melon when the arrow is at its highest point. The melon, with the arrow embedded, falls to the ground. ...
  8. Intro to Probability, please check my work.

    A fair coin is flipped three times. You win $5 every time the outcome is heads. Let the random variable X represent the total number of dollars you win. (a) List the sample space. (b) Determine the probability function of X. ====================== Answer: a) 2^3= 8 ...
  9. Calculus

    R=M^2(c/2-m/3) dR/dM=CM-M^2 I found the derivative. Now how would I find the vale of M that maximize the derivative dR/dM? set it to zero, and solve for m. You get two solutions. Use the second derivative to see which one is the max. I get M=C. How do I go from there? What do ...
  10. chemistry check

    A) Write a balanced chemical equation for the reaction between sulfuric acid and potassium hydroxide. I got H2SO4 + KOH ---> H2OH + KSO4 B) Write the ionic equation for the reaction. H2 + S2O4-2 + K + OH- ---> H2 + OH + K2SO4-2 C) Write the net ionic equation I'm not ...
  11. check my work

    8. Which of the following is a successful result of the Reconstruction? (1 point) states could limit voting rights in elections more African Americans could go to school segregation kept the races apart or separate sharecropping helped poor blacks own land 6. Which of the ...
  12. Art

    I still have a few sentences to check. Thank you very much, Writeacher. 1)When an ad tries to create direct contact with people, we can talk about interactive advertising. 2) For example, an important chain of supermarkets in the UK divides (has divided) its customers into ...
  13. ethics

    A coworker calls you at 9 a.m. at work and asks for a favor. He is having trouble this morning and will be an hour late for work. He explains that he has already been late for work twice this month and that a third time will cost him four hours of pay. He asks you to stop by ...
  14. Calculus Please check

    Please check my answers and let me know if I did something wrong. Thank you! Find the partial derivative of x, and the partial derivative of y, then the partial derivative of x (1,-1), and the partal derivative of y (1,-1). f(x,y) = x^4 y^2 -x here is what I got @f/@x = 3x^3 y...
  15. grammar

    Can someone please check my work? Thank you. Which of the style guides is most focused on professionals who are writing articles for publication? MLA APA Chicago (my choice Which of the style guides no longer recommends citing URLs? MLA APA (my choice) Chicago Are you ...
  16. physics

    A horizontal force of magnitude F = 116 N is used to push a box of mass m = 9 kg from rest a distance d = 13 m? 1)How much work is done by the force on the box? WF = 2) How much work is done on the box by the gravitational force during this same displacement? Wg = 3) How much ...
  17. Health: Check answers

    Jakob went for lab tests, it took three tries with a needle to get any blood into the vial. Why might that be? Jakob may be dehydrated. Jakob had six vials of blood taken, is this healthy? Yes, if it wasn't then his doctor wouldn't have done that many. Check answers please?
  18. calc check: euler's method

    Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1); x0=0, y0=1, h=0.1, F(x,y)=y(1+x) y1=y0+h*F(x0,y0) y1=1 + 0.1(1(1+0)) y1=1.01 y2=1...
  19. math

    the two-digit number whose cube root is the square root of the sum of its digits THe cube root of 27 is 3. Only two possible answers; 27 or 64 Looks fairly obvious. 2+7 = 9. Sqrt 9 = 3 and (27)^1/3 = 3. check. 6+ 4 = 10. sqrt 10 = 3+ and (64)^1/3 = 4 doesn't check. or have I ...
  20. math order from least to greatest

    can you check my work i need order least to greatest 6 problems. 1) 0.2222 1/5 0.02 i got: 0.2 0.2222 0.02 2) 1.1111 1 1/10 1.101 i got: 1.1 1.101 1.1111 3) 6/5 1 5/6 1.3333 i got: 1.2 1.3333 1.83333 4) 4.333 9/2 43/7 i got: 4.3333 4 3/7 9/2 5) 0.1333 2/75 1.3 i got: 0.1333 0....
  21. chemistry

    A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ...
  22. Chemistry

    A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constant-temperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ...
  23. PHysics

    A 250 kg load is lifted 23 m vertically with an acceleration a = 0.185g by a single cable Determine the tension of the cable. =2900N Determine the net work done on the load. =? Determine the work done by the cable on the load. =66700 J Determine the work done by gravity on the...
  24. trig

    find, to the nearest tenth of an inch, the length of the arc intercepted by a central angle of (4pi)/3 radians if a radius of the circle is 22 inches long
  25. trig

    find, to the nearest tenth of a meter, the length of the arc intercepted by a central angle of 160 degrees if a radius of the circle in 8 meters long
  26. maths

    in right angled triangle ABC, angleBis90 degree and C is an acute angle of60degree. Also sin m<C=c/b. Find the following trig ratios.(a)mBC/mAB (b)cosec30degree
  27. Math C30 ( trig )

    Solve : cosxtanx + root3cosx - root3/2tanx - 3/2 = 0 Give exact answers and formula for the general solution as well as the specific solutions.. Help
  28. trig

    Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be t.
  29. trig

    Find all solutions of cos (x) + 1/2 sec (x) = -3/2 in the interval (2pi, 4pi) (Leave your answers in exact form and enter them as a comma-separated list.)
  30. Precalc/Trig 2

    The point P lies in the 4th quadrant and is located on a circle of radius 2. Find the missing coordinate for P. (___, (negative square root of 3)).
  31. trig

    in a circle of radius 26, find the length of the arc spanned by a central angle of pi/4 radians. round your answer to 2 decimal places. use 3.1416 as an approx for pi.
  32. Maths - Trig

    I just had a test, and one question I tried heaps of times and I still couldn't answer. It was "Prove secèsinè + cosecè cosè = 2cosecè " Can someone please tell me if proving this is possible at all? (But don't tell me how to solve it)
  33. Chemistry

    24.5 ml of water are added to a 1.20 molar solution of nitric acid. If the concentration decreases to 0.55 molar, what volume of the concentrated solution was used? 1.20 M x mL = (24.5 mL + mL) x 0.55 M Solve for mL. Check my thinking. When you finish the calculation, check it...
  34. Health please check my answer

    Please check my answer thanks Is this statement True or False A 16 -year old patient is having problems with a swollen gland on the left side of her neck, The physican is most likely to use visualization to determine if the gland has any atypical characteristics. My answer is ...
  35. Algebra II repost- please check

    I posted these a little while ago but this time I have answered them. 1. Does the graph of y = x – 3x2 + 5 have a maximum or minimum? 2. What is the vertex of the graph of y = -2(x - 3)2 + 4? 3. Does the graph of y = -2(x - 3)2+ 4 open up or down? My answers: 1. I cannot ...
  36. infinite discontinuity

    How do check the graph of a function has an infinite discontinuity at a point or not? (without the help of a graphing calculator) example: Check whether y = (x^2-9)/(3x-9) has an infinite discontinuity at x = 3 or not CAn you get rid of the denominator? (x+3)(x-3)/3(x-3) in ...
  37. Spanish #2 (URGENT)

    Can someone check my work? Create a sport skit/presentation using commands and actions. Escuchanos! Vamos a enseñar cómo jugar al futbol. Pon en los zapatos de fútbol. Trae un balón de fútbol. Va al campo. Golfea el balon con el pie. Corre al balon y golfea de nuevo. ...
  38. Algebra

    Doing a slope project in Algebra. The instructions are to make a picture And label coordinates points.. You have to show a negative slope. A verticle slope, an undefined slope, And a positive slope. Here is my problem. I have to write An equation and show my work for the ...
  39. Algebra 2

    Can you check my answer and the work? Thank youu~~ (2x-y)7 128x7 -448x6y -672x5y2 -560x4y3 -280x3y4 -84x2y5 -14xy6 -y7 orr 128x7 -448x6y +672x5y2 - 560x4y3 +280x3y4 -84x2y5 +14xy6 -y7 Ps: the 7 in the equation is the exponent and the numbers after the variable are also the ...
  40. english

    i had to write a paper on the following: details that show the impact of the problem (effects) on jack ruth and the company section 2 the steps needed to change the situation reason to implement each step, including the benefits to your employees, your supervisor, and the ...
  41. HUM/205

    To what human experience does the work relate? O How is that human experience meaningful to your life? O How does the work express or relate to your human experience? O What social, cultural, and moral values does the work express
  42. writing/puncutation

    I wrote this need someone to check make sure grammar and punctuation is ok! Thanks! Having a high school diploma is very important to my future. I will no longer feel ashamed, because I was never able to finish my schooling. I will be able to work towards getting the skill I ...
  43. Electromagnetic induction-check answers

    Please check my answers: why does an iron core increase the magnetic iduction of a coil of wire? -I am thinking it has something to do with the voltage being increased. Will a cyclist coast farther if the lamp is connected to the generator on his bicycle is turned off? -I say ...
  44. Math

    Can you please go step by step, Ill show what I did and you can correct me. The question is: a+a(x+1) My way: a+a(x+1) 2a(x+1) 2ax+2a Could someone please check over this and provide a correct answer and my error. Thanks in advance. a+a(x+1) does not equal 2a(x+1) If it was (a...
  45. inequality

    (x-4)/(2x+4) is greater than or equal to 1. How do i express solutions to inequalities in interval notation without using the calculator? please help. (x-4)/(2x+4) >=1 multiplying by 2x+4 1) when (2x+4) is +, x-4>=2x+4 or x-2x>=8 -x>=8 x<=-8 notice the ...
  46. English

    Please read for any errors. And correct them. The premium on your disability insurance policy is overdue. Don’t let his valuable policy lapse. If you become disabled you will receive a monthly income from this policy. This disability policy provides importance security for ...
  47. english

    Could someone check mty work? Which of the following would not be a good strategy for delivering a speech? Make sure your presentation is running properly Start talking over the audience to quiet them down (anser) Use correct grammar and well formed sentences Look directly at ...
  48. Math

    1) Solve for x and check Radical (x^2-10x)=3i 2) Simplify (5+ Radical 2)/(5-Radical 2) 3)describe the nature of the roots x^2-x-6=0 x^2+4x+29=0 4) Solve for x and check Radical (x^2 +4x +44) +3=2x I got 7 and -5/3 as answers, was not sure though
  49. Pre Cal Check

    focus: (0,p) vertex: if not given, then it is assumed (0,0) Directrix: k+p or k-p, i'm not sure I think these are the general equations for the focus, vertex, and directrix of a parabola, but i'm not sure. could someone please check this? thanks.
  50. Health care please check answer

    Please check my answer thank you :) How are children hospitals paid ? (excluded from Medicare acute care PPS) My answer they are paid based on reasonable costs.
  51. algebra ineqUALITIES

    can you check these tell if the number after the: color is a solution x < 7; 7 i say yes p > -3;3 i say yes k is greater than or equal to 5; 0 i say no 3z is less than or equal to 12;4 i say yes n - 5 > 3; 6 i say no 2g + 8 is geater than or equal to 3;-1 i say yes ...
  52. trig

    Use a graph of the cosecant function to find the value of theta for which csc theta equals 1.
  53. Math

    Find the exact value of the trig expression given that sin u = -5/13 and cos v = -4/5. u and v are in the second quadrant. cos(v - u)
  54. math trig

    a triangle abc has a mearsure of an adjacent 15 and 25 degree solve for the triangle
  55. Pre-Calc/Trig...

    Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29
  56. Trig

    triangle with side lengths 172m, 155m, and 155m. calculate the area.
  57. trig

    prove the identity sec^2x times cot x minus cot x = tan x
  58. trig

    solve the equation of the domain 0¡Ü¦È¡Ü2¦Ð 3cos^2theta - 5costheta -1 = 3sin^2theta
  59. trig

    Find the maximum and the minimum values of sinx + cosx and the smallest value of x which they have these values
  60. trig

    solve each equation for 0 less than or equal to x greater than 2ð. cot²x-cscx=1 thanks:) step by step please :)
  61. algebra-trig

    Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
  62. trig

    Can you please help me w/ this?? The range of the function y=tan pi x is abs(y) > (greater than or equal to) A The value of A is (a) 0 (b)2 (c)- infinity (d)+ infinity (e) none of these
  63. Trig

    Could someone please show me how 1 / ( 4 tan (x/2) + 2 ) is converted to: (- sin (x/2) /( 2 sin (x/2) + cos (x/2)) TIA Carol
  64. Trig

    does sin and tan repeat 2Pi as well? and what do csc sec an cot do? -2PI?
  65. trig

    if x and y are positive acute angles, tan x=1/3and tan y =1/4, find the value of sin(x-y)
  66. Trigonometry

    Can you please help me solve this trig equation for 0 ≤ x ≤ 2π? 9sin^2(x)-6cos(x)-10=0 Thank you!
  67. trig

    how can i find all the exact solutions to the equation : 2cos^2x + 3sinx = 3 the solutions have to be between [0,2pi)
  68. algebra-trig

    Can someone please explain to me how to graph sine and cosine step by step because I am so confused and I really really need help.
  69. Trig

    2 vectors at a Right angle to each other are pulling on a bolt. vector 1 = 650; vector 2 = 300 then R = ?
  70. trig

    If it is given that tan(A-B)=tanA-tanB/1+tanAtanB and tanP-1/1+tanP=tan195 find p
  71. Math/Trig

    Solve: sin2 x = cos2 x for 0 degrees is less than or equal to x is less than 360 degrees.
  72. trig

    Name three values of theta that would result in y equal to cot times theta being undefined.
  73. Trig

    Find sin(x+y), cos(x-y), tan(x+y), and the quadrant of (x+y) if sinx= -1/4, cosy= -4/5, with x and y in quadrant 3.
  74. Trig

    What is the period of f(x)=sin4x. I got pi/2 but on my answer list, it is not on there. a.4pi b.2pi c.pi d.1/2pi Which one would i choose?
  75. trig

    How do I prove : 4sinAcosAcos2Asin15 all over. :sin2A(tan225-2sinsquared A)is equal to. :root 6 - root 2 over 2
  76. Math/Trig

    Which logarithmic equation is equivalent to L^m = E 1) LogL E = m 2) logE L = m 3) logm E= L 4) logE m= L
  77. Pre-Calc/Trig...

    Help me do this please. Simplify the expressions using imaginary numbers. 1. √-16 2. √-49
  78. trig

    convert 80 degrees into radians 80 deg *2PI rad/360 deg = ?
  79. trig

    if tan x= 4/3 and pip < x < 3pi/2, and cot y= -5/12 with 3pi/2 < y < 2pi find sin(x-y)
  80. Trig Help (URGENT)

    Solve over the indicated interval: 2sin^2x=sqrt2sinx , [-180,180) don't how to get x by itself please help and thank you
  81. trig

    How do I solve.... Tan 2(theta) - Cos 4(theta) = 0 Domain: (0-360 degrees) Thank you.
  82. trig

    Verify the Identity: sec(x/2)=the square root of (2 tanx/(tanx sinx))
  83. Trig

    Rules of Logarithms: Can someone explain how to do: 1) e^(2(ln)(x)) 2) e^(-lnx) I know the rules I just don't understand how they apply.. thanks!
  84. Trig

    Find the algebraic expression that is equal to sec theta - cos (-theta)
  85. trig

    If sinx = -3/5, tan x > 0, sec y = -13/5 and cot y < 0, find the following: a. csc(x + y) b. sec (x - y) How do I get the answers of a. -65/33 b. -65/16 Thank you
  86. trig

    Verify the equation is an identitiy: cot(x)tan(x+pi) - sin(pi-x)cos((pi/2)-x) = cos^2x Thanks
  87. Trig

    Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, find Cos(A-B).
  88. trig

    A road has a 10% grade (slope). To the nearest degree what is the angle of elevation of the road?
  89. trig identities

    Find the exact value of cos (2theta) given csc theta = 8/3 and 0 < theta < pi/2
  90. trig

    Use trigonometric identities to find sec theta, given that tan theta = Radical 5/ 3.
  91. trig

    If A+B+C=^(^=180) prove that sinA + sinB - sinC = 4sinA/2 sinB/2 cosC/2
  92. trig

    Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
  93. Trig

    3. In the figure below, the perimeter of the parallelogram ABCD is (6a + 8b + 29) and the perimeter of the triangle ACD is (3a + 4b + 32). What is the length of AC
  94. trig

    secx=5 use a graph to solve the following equation in the interval x is greater than -pie but less than pie
  95. trig

    what is the exact value of cos(x+y) if tan=x sqare root 3 over 3 and sin y=square root 2 over 2?
  96. trig

    if sina,cosa,tana are in geometric progression then prove that cot^6a-cot^2a=1
  97. Trig

    If the terminal side of an angle theta contains the point (-1,3), find secant theta.
  98. Trig

    Solve the equation in the interval [0•,360•] Csc theta = 1+cot theta
  99. english

    i need help with a thesis statement by a careful study of the work, the author, and of the time period in which the work was written, show how, in terms of genre, style, and vision, the writer holds up a mirror to his or her age.
  100. statistics

    Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week
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