1. Math

    Draw the graph of the following function on the given interval. [4 marks] y=1.8cos⁡(2x+〖30〗^o ) -〖180〗^o≤x
  2. math

    how to define arc cosine(cosine x) for -360 deg
  3. trig

    Draw the graph of f(x) = tan x and g(x) = 2cos x for 180 _< thetha _< 180 {since its a graph I'm sure how to draw it here}
  4. Math

    Given f(x) = 2 cos[3(x - 60)]+4. Graph one complete cycle of the above function when -180
  5. math

    an equilateral triangle has three equal sides , which equation could be used to find the measure,M,of one angle A.180+3=M ---- B.3 x 180 C. 180-3=180 D. 180 divided by 3=M if you know all the answer GREAT!!!
  6. math angles

    find the measure of m
  7. Geometry

    Which equation can be used to find the unknow ange measures? The diagram is a triganle. A= x+30, B= 3x, and C = x-15 A 5x+15=90 B 5x+45-180 C 3x^3+15=180 D 5x+15=180 E 3x+30=180
  8. Trig

    4. Asked to simplify the expression sin(180−è), Rory volunteered the following solution: sin(180−è) = sin 180−sin è, and, because sin 180 is zero, it follows that sin(180−è) is the same as −sin è. Is this answer correct? If not, what is a
  9. Math

    The graph of the cosine function is the same as the graph of the sine function but translated: a) 90 degrees to the right b) 90 degrees to the left c) 180 degrees to the right d) 180 degrees to the left I was thinking it could a) and b) but there can only
  10. Algebra

    need help checking Create a 2-column proof for the following equation. X + X + 10 + 2(2X + 10) = 180 X + X + 10 + 2(2X + 10) = 180 (Given) 2X + 10 + 2(2X + 10) = 180 (Simplify) 2X + 10 + 4X + 20 = 180 (Expand) 6X + 30 = 180 (Simplify) 6X = 180 - 30
  11. 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
  12. Trig.

    4cosBeta=1+2cosBeta 2cosBeta=1 cosBeta=1/2 60 degrees +/- 180--is this right? I know there should be another answer, but I'm not sure if it needs to be 240 +/-180 or 120 +/- 180. I don't know how to tell if it's added to 180 or subtracted, could you please
  13. Trig (Last URGENT)

    sin2x+cosx=0 , [-180,180) = 2sinxcosx+cosx=0 = cosx(2sinx+1)=0 cosx=0 x1=cos^-1(0) x1=90 x2=360-90 x2=270 270 doesn't fit in [-180,180) what do I do? Or maybe I did something wrong. sinx=1/2 x1=sin^-1(1/2) x1=30 x2=180-30 x2=150 is this correct? Please and
  14. Math (Calculus 121)

    The derivative tells you the slope at any point. df/dx = 8 x^3 - 12 x When x = 3, the slope is m = 8*27 - 36 = 180 and the equation of the tangent line is (y - 228) = 180*(x - 3) y = 180 x - 540 + 228 = 180 x - 312 wow, that was absolutely correct (i just
  15. math

    i need to plot a graph y=sin(x)+0.4 on ti-83 calculator for x=-180* to 180* but what should i put for y min and max.
  16. physics

    The displacement vector for a 15.0 second interval of a jet airplane's flight is (3150, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval?
  17. physics vectors

    Three vectors a, b, and c, each have a magnitude of 42 m and lie in an xy plane. Their directions relative to the positive direction of the x axis are 27 ˚, 194 ˚, and 312 ˚, respectively. B) i need the angle of the vector a+b+c (relative to the +x
  18. Physics (Velocity in two dimensions)

    Please help: The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time
  19. Physics (Velocity in two dimensions)

    Please help, The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time
  20. math

    Mike is saving money for a new bike that costs $180.00. If m represents the amount of money he has saved so far, which expression represents the amount of money, in dollars, he still needs to save? a. 180 + m b. 180 - m c. 180 ' m d. 180 . m
  21. Math

    Could someone please help with this question. State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y = 2sec(-2x + 180°) + 3 in the following way. 1)graph y=sec(x) 2) apply a horizontal compression by a factor of 1/2. 3) apply a
  22. College Algebra

    1.Answer the following for the given quadratic function. f(x) = -2x^2 - 8x - 13 (a) does the graph of f open up or down? (b) what is the vertex (h,k) of f? (c) what is the axis of symmetry? (d) what are the intercepts? (e) how is the graph suppose to look
  23. geometry

    measures of a triangle. m
  24. OPT MATHS

    HOW TO PROVE(1+COS180/8)(1+COS3*180/8)(1+COS5*180/8)(1+COS7*180/8)=1/8
  25. math word problem

    the boiling point of water 212 degree f. this is 180 degree more than its freezing point. define the variable. then write and solve an equation to find the frezzing point of water. show your work. the variable would be: d could be the variable. f + 180 =
  26. trig

    how to graph thr trig function f(x)3x-180)+2 and the parent function?
  27. equation complex number

    z^4 + 81 = 0 (solve) change it to polar, then take the root. z^4= 81@180 z= 3@180/4 + n90 where n=0, 1, 2, 3 check: z= 3@180/4 + 3*90=3@315 z^4=81@(4*315)=81@1260= 91@180=-81 you can check it at the other roots also. this is what i did: z^4 = - 81 z (81
  28. Computer Science

    The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multi-digit number may also look like itself when rotated on
  29. Computer Science

    The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multi-digit number may also look like itself when rotated on
  30. Calculus

    The function f is continuous on the closed interval [1,7] and has values in the table below x f(x) 1 10 4 30 6 40 7 20 Usinf the subintervals [1,4] [4,6] [6,7] what is the trapezoidal apporx. of the integral from 1 to 7 of f(x)dx? The answer: 160 I tried
  31. maths

    firstly we have been given the function y= x^3 - 4x whose graph we have to draw.then we are given the function y = (x-1)^3 -4(x-1) whose graph we have to draw as well.Now i know it is a transformation of the first graph,but i cant see how.Any help would be
  32. Computer Science

    The digits 0, 1, and 8 look much the same if rotated 180 degrees on the page (turned upside down). Also, the digit 6 looks much like a 9, and vice versa, when rotated 180 degrees on the page. A multi-digit number may also look like itself when rotated on
  33. Trigonometry

    Need help solving problems using the Trigonometric Identities: 8cos^4 thet=cos4theta+4cos2theta+3 I am a bit unsure how to solve it. I am aware that the first step I must take is to simplify the problem and then use the Product to Sum formula Nasty one!
  34. math: Calculus - Algebraic Vectors

    A light plane is travelling at 175 km/h on a bearing of N8°E in a 40 km/h wind from N80°E. Determine the plane's ground velocity using algebraic vectors. The answer for this question is: 167 km/h , N5°W ---------------- My Work: (a , b) = ( | r | *
  35. Physics

    Consider two vectors F~ 1 with magnitude 44 N inclined at 163 ◦ and F~ 2 with magnitude 72 N inclined at 236 ◦ , measured from the positive x axis with counterclockwise positive. What is the magnitude of the resultant vector F~ 1 + F~ 2 ? Draw the
  36. calculus

    I need help on finding the local linear approximation of tan 62 degree. i got 1.77859292096 can someone check if i got it right? tan(60+2) = (tan 60+ tan 2) / (1- tan60 tan 2) But tan2 appx = sin 2deg = sin2PI/180= 2PI/180 tan 62=(tan 60+2PI/180) / (1-
  37. trig

    Sketch the graph of f(x)=sin(x+30 degrees) and g(x)=cos2x in the same system of axis [-180 degrees;180 degrees]
  38. Physics

    A body accelerates uniformly from rest and covers a distance of 180m in 6s. Calculate the magnitude of its acceleration. . solution S=ut+1/2at^2 180=0x6+1/2xax6^2 180=0+a/2x6^2 180-0=36a/2 180=36a/2 180x2=36a 360=36a 360/36=36a/36 10ms^-2=a acceleration is
  39. angles

    whats 25-2 +180 and 30-2 +180 whats 25-2+180 203 for the first one 208 for the second one How do i find the correct angle?
  40. basic geometric

    a would like to get someone too help me with these math problem. Two angles of a triangle are 40 degrees and 62 degrees; what is the third angle's measur? The angles of a triangle always adds to 180o. You know two of the angles, solve for the third. can
  41. math

    8000x.69 = 5,520 2000x1.09 = 2,180 4000x.99 = 3,960 1000x 1.19 =1,190 2000x1.09 = 2,180 5,520 + 2,180 +3,960 =1,190 +2,180 = 15030 the value of ending inventory is that right
  42. Physics (Algebra Bit)

    I see that this is a quadratic equaion and it has been a while sense I have taken algebra 1.... I don\'t know how to solve for t3... -2^-1 t3^2 - 180 s t3 + t3^2 = a^-1 (Vo (180 s) - 1,100 m + Xo) how do I solve this for t3 the 3 is a subscript to t 180 s
  43. math

    How do you rotate an object in a graph?? It depends on what point you are rotating the plot. The math is somewhat advanced, so I don't know your level. i just need to rotate it..like 180 and 90.... Ok, rotating about the origin. For ninety degrees, counter
  44. 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
  45. Word Problem

    A wire from the top of a TV tower to the ground makes an angle of 52 degrees with the ground and touches the ground 180 feet from the base of the tower. How high is the tower? a)290 feet b)230 feet c)110 feet d)140 feet I'm pretty sure we can eliminate c
  46. physics

    A 0.26 kg particle moves in an xy plane according to x(t) = - 13 + 1 t - 3 t3 and y(t) = 22 + 6 t - 11 t2, with x and y in meters and t in seconds. At t = 1.2 s, what are (a) the magnitude and (b) the angle (within (-180°, 180°] interval relative to the
  47. trigonometry

    Find all solutions on the interval [0.2pi) A) -3sin(t)=15cos(t)sin(t) I have no clue... b) 8cos^2(t)=3-2cos(t) All i did was move around the equation to make an quadratic for B. so -8cos^2(t)-2cos(t)+3 = 0
  48. math

    The measure of an interior angle of a regular polygon is 135 degrees. Find the number of sides in the polygon. This is what I tried: 180(x-2)=135 [Interior Angle Sum Theorem] x-2=.75 x=2.75 That can't be right though. Help? Not sure about your formula.
  49. MATH!

    The ratio of two supplementary angles is 2:7. What is the measure of the smaller angle? Can anyone help me with this--i don't understand it. The angles add to 180, so 2x + 7x=180 solve for x, then the smaller angle is 2x Supplemental means adds to 180
  50. Math Gr 11

    "A rock is dropped from the edge of a 180 m cliff. the function f(x) = -5t^2 - 5t + 180 gives the height of the rock, h(t), in meters t seconds after it was released. How long does it take for the rock to reach a ledge 80 m above the base of the cliff?" I
  51. Math

    3. which equation can be used to find the measure of an angle that is supplementary to EGB ? A.m
  52. Trig

    A. Find simpler, equivalent expressions for the following. Justify your answers. (a) sin(180 + è) (b) cos(180 + è) (c) tan(180 + è) B. Show that there are at least two ways to calculate the angle formed by the vectors [cos 19, sin 19] and [cos 54, sin
  53. trig

    I am very confused about the concepts of.. sin è = sin(180 - è) sin (180 + è)= -sinè tan (180 - è) = -tanè and how the final answer was found in this problem... Find cos 510: cos510=cos(540-30) =-cos30 =-s.r3/2 i don't understand how we went from
  54. trig help

    I need help finding sinA if cosA=(-3/5) and A is greater than 90 degrees, but less than 180 degrees. Draw the quadrant diagram. In the upper left quadrant, greater then ninety degrees, but less than 180, cosine is neg, and sine is positive. Draw a three,
  55. ALGEBRA 1!!!(2)

    2.Two cars leave town going opposite directions. One car is traveling 55 mph, and the other is traveling 65 mph How long will it take before they are 180 miles apart? Hint: The time for both cars is the same and can be represented by "t." The total
  56. math

    in an examination there are 180 questions , 4 marks is given for each correct answers and 1 marks is subtracted for each wrong answers . if a boy scores 220 marks find the no of correct and wrong answers ???
  57. trig

    solve for the equation x sin x= -.35 180
  58. Maths

    Solve the following equations for -180《 x《 180 A) 4+4cosx=sin^2x B) 2sin=5cosx Thankyou
  59. Physics- Work related

    If 2.0 J of work is done in raising 180 g apple how far is it lifted? I would assume that 2/180 = x but I divided it and it does not sound right.. please someone help.
  60. Math

    How many grams of a drug should be added to 180 ml of water to make a 15% (w/w) solution? My answer: 0.15 = (x/180) x= 27 gm
  61. Math

    θ is an angle such that 180∘
  62. Math

    I am trying to help my son in Algebra, the only thing is that I have forgot some of these thing.He has a word problem I can not figure it out please help a mother help her 9th grader. Q- The polygons below are similar. Find the unknown side lengths if
  63. math

    (n-2)*180 =108n 180 n - 108 n = 360 72 n = 360 n = 5 drwls, I had totally misread the problem and thought it said (n-2)^180 =108n been working on it for almost an hour, trying Newton's method and all kinds of iteration. I really have to try to read the
  64. Pre-Calculus

    Trigonometric Functions, Radian Measure ∏
  65. geometry

    Do you use the formula: (n-2)180 / n to find the measure of each arc that corresponds to a side of a polygon? Example: a hexagon (6-2))180/6 = 120 ?
  66. MATH PLEASE HELP

    Thank you very much for the answer stated below: A perfect square will have an even number of repetitions of each prime factor. 180 = 2*2*3*3*5 e have 2^2 and 3^2, but we need another 5. So, 180*5 = 900 = 30^2 = (2*3*5)^2
  67. arithmetic

    mark the correct answer. find 60% of 180 a) 90 b)180 c)130 d)60
  68. Physics

    Consider a torque ⃗τ that is constant in both magnitude and direction, and acts on a rigid body of mass 10 kg at a point 1 m from the pivot. How much work does the torque do on the rigid body, if it turns through an angle of 180◦ while the torque is
  69. math

    what are the 2 greatest consecutive even integers whose sum is less that 180? for the 1st I got x+2 and for the 2nd I got x+4 to get x+2+x+4
  70. algebra word problem

    We need help!. insurance plan A is $130 plus 25% cost to the patient. Plan B is $180 plus 20% of the cost to the patient. For what amount of medical bills will plan B save the patient money. Assume the patient has over $180 in bills. We are getting stuck
  71. Calculus

    As part of a fitness program, Annie walks for 35 mins on day 1, and increases the walking time by 8 mins each day. She completes the fitness program on the day she first spends more than 3 hours walking. The program is completed on what day? This is how I
  72. Corrected Temperature Problem

    Q: The activation energy of a certain reaction is 32.9 kJ/mol At 25 degrees C the rate constant is 0.0160 units s-1 units. At what temperature in degrees Celsius would this reaction go twice as fast? My work: ln(0.0160/0.032) = (32,900/8.314)(1/T2 -
  73. Help!Math...Again!!!PLease Help!

    Two cars leave town going in the same direction. One travels 55 mph and the other travels 65 mph How long will it take before they are 180 miles apart? Hint: We do know that one car is 180 miles ahead of the other, so the slow car's distance can be
  74. math b

    if sinx=(4/5), where 0 degrees
  75. Physics

    What is the direction of this resultant vector (between the limits of −180◦ and +180◦ from the positive x-axis) ? 1. −88◦ 2. −117◦ 3. −144◦ 4. −143◦ 5. −135◦ 6. −171◦
  76. Please help! quadratic equation

    Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=
  77. college algebra

    Given the following quadratic equation, find;? a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.
  78. College algebra

    Given the following quadratic equation find. a) the vertex b) the axis of symmetry c) the intercepts d) the domain e) the range f) the interval where the function is increasing g) the interval where the function is decreasing h) graph the function y=
  79. college algebra

    Given the following quadratic equation, find a. the vertex b. the axis of symmetry c. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function.
  80. College Algrbra

    Given the following quadratic equation, find a. the vertex b. the axis of symmetry. the intercepts d. the domain e. the range f. the interval where the function is increasing, and g. the interval where the function is decreasing h. Graph the function
  81. Physics

    Consider three force vectors ~ F1, ~ F2, and ~ F3. The vector ~ F1 has magnitude F1 = 86 N and direction θ1 = 169◦; the vector ~ F2 has magni- tude F2 = 46 N and direction θ2 = 240◦; and the vector ~ F3 has magnitude F3 = 45 N and direction θ3 =
  82. ALGEBRA 1

    If x and 3x-10 represent the measure of the acute angles of a right tringle find the value of x. THANKS Let's take it step by step. A triangle has 3 angles in it. Those three angles, when added together, is 180. In a right triangle, one of the angles is 90
  83. extreme value of absolute.....

    find the extreme values of the function on the interval and where they occur. f(x) = |x-1|-|x-5|, -2
  84. physics

    calculate the force on an airplane which has acquired a net charge of 180 C and moves with the speed of 180 m/s perpendicular to the earth's magnetic field 5.0 x 10^-5 T.
  85. college algebra

    given the folowing quadratic equations find the vertex the axis of symmetry the intercept the domain the range the interval where the function is increasing andthe interval where the function is decreasing graph the function y=X^2+4x
  86. Physics

    Consider a child standing on a beach who gets hit by a wave. The child weighs 30 kg, and the portion of the wave that hits the child contained 60 kg water. If the wave had a period of 2 seconds and a wavelength of 6 meters, how fast will the child be
  87. algebra. help!

    1. 3x+10≥4 a. x≥-2 b. x≤ 2 c. x≤-2 d. x≥ 2 ** 2. The tennis team is selling key chains as a fundraiser. If its goal is to raise at least $180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a.
  88. Algebra

    Graph the rational function x/(x-6) To graph the function, draw the horizontal and vertical asymptotes (if any) and plot at least two points on each piece of the graph.
  89. math

    Solve for x if sin2x=cos(x+30) for x [-180;180]
  90. MATH

    Solve this system of equations. 3x+y+60=180      5y-5+2x=180
  91. chemistry

    For AsClF42-: a) Name the hybridization of the orbitals of the central atom. s sp sp2 sp3 sp4 sp3d sp3d2 b) Estimate the Cl-As-F bond angle. Slightly less than 90∘ Exactly 90∘ Slightly greater than 90∘ Slightly less than 109.5∘ Exactly 109.5∘
  92. physics

    An automobile traveling along a straight road increases its speed from 89 ft/s to 104 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s
  93. Physics

    An automobile traveling along a straight road increases its speed from 67 ft/s to 85 ft/s in 180 ft. If the acceleration is constant, how much time elapses while the auto moves the 180 ft? Answer in units of s. Can you tell me the steps in doing this?
  94. Algebra 2

    The formula A = 180(n-2)/n relates to the measure A of an interior angle of a regular polygon to the number of sides n. If an interior angle measures 120 degrees, find the number of sides A)5 B)6 C)8 D)10 I have NO clue on how to do this pls help. Make A
  95. AP Calculous

    let f be the function defined by f(x)=3X^5 -5X^3 +2 a) on what interval is f increasing? b) on what interval is the graph of f concave upward? c)Write the equation of each horizontal line tangent to the graph of f
  96. math

    A town planner is using a map of a town centre with a scale of 1: 1250 A new section of road will be 180 cm. How long will it be on the map? Give your answers in centimetres. how do i work this ouit? Please check your figures and the wording of your
  97. Math

    Using mental math, what is 180,00 divided 60,000 ? I can do this mentally. You need to try; otherwise, it doesn't mean anything to you for me to do it. Did you intend to write 180,000? Did you intend to write 180,000?
  98. maths

    draw the time temperature graph from 8a.m to 4p.m of a particular day at 15 minutes time interval. study the graph and draw the inference.
  99. Algebra 1

    A design calls for a rectangular garden with an area of 180 square feet. If the length is to be 3 feet more than the width, set up an equation and solve that equation to find the dimensions of the garden. I drew a sketch and labeled the width "w" and the
  100. algebra

    1 (a) A function passes through the points (0, -5), (1, 0), (2, 7). Use finite differences to determine the equation of the function. (b) Draw the graph of the function. (c) Draw the inverse on the graph. (d) Show at least two different restrictions to the