# Trig check my work please?

42,204 results, page 81

1. ### Math Check

Solve: x^-2 - x^-1= 5/4 I have the answer as (5+/- sqrt29)/2 Is this right?
2. ### algebra

-12x^6+24x^5-18x^2/-6x^2 3x^4+x^3-3x check see if I did it right.
3. ### Alg 2 Check Please!!!

1) 8^2y = 52^4y+3 2) 2^3(2y) = 2^26(4y+3) 3) 6y = 104y+78 4) -98y = 78 5) y= -0.796
4. ### To: SraJMcGin

I posted an assignment for you to check at 4:51 today just to let you know.
5. ### math12

solve. check for extraneous roots.3^2x-4(3)^x+3=0

4z-24/6-z=-z,-4 <<<this is in simplifield form am I right???
7. ### algebra

explain how to check a solution of an equation.
8. ### math - scientific notation

please check. thanks. (8.3 x 10^-15) (7.7 x 10^4) = 6.391 x 10^-10 Is that right?
9. ### Algebra..

Check These Answers Please? f(x)= x^2+3 ; g(x)=3x-1 1. (f+g) =x^2+3x+2 2. (f+g)(3) = 20 3. (f-g)(x) = x^2+3x-4 4.(fg)(x) = 3x^3+1x^2-9x+3 5. (fg)(x) =5 6. (f/g)(x) =(x^2+3)/(3x-1) Compostitions of functions : 7. (f o g)(x) =3x^2+4 8. (f o g)(x) =10

11. ### Algebra 1 Answer Check

Factor each trinomial. 1. -2x^2 + 5x + 12 A: -1(2x + 3)(x - 4) 2. 4a^2 + 8a - 5 A: (2a -1)(2a + 5) 3. -4x^2 - 8x + 5 A: -1(2x - 1)(2x + 5) 4. -5x^2 + 7x + 6 A: -1(5x + 3)(x - 2)
12. ### Algebra 1 Answer Check

Factor this trinomial. 9x^2 - x + 2 A: (3x + 2)(x - 1)
13. ### alg2

solve for 10/x^2-2x + 4/x = 5/x-2 3x/x+1 + 6/2x = 7/x 8(x-1)/x^2-4 = 4/x-2 check for any extraneous solutions! thanks!
14. ### Math check

What is 6 5/6 - 5 1/2 This is my answer:1 2/6 or simple form: 1 1/6
15. ### Math

Can you check these? .04 is 1/8% of what number? 32 What percent of 1/8 is 3 1/2? 2800%
16. ### Pi

How do u describe how to check an algebra question??? I need help ASAP
17. ### TO: Mrs Sue...is my answer below right?

can u check it plz

.263degrees C
19. ### Algebra 3 check only

(2^-3)(x^0(x^2)) all over _______ (x^-3)(xy^-3)(y) does it equal x^2)(xy^3)(x^3) ______________ 8y
20. ### Math

Solve the equations below. Check your solutions. 3x-5/2=4x+1/4
21. ### Math check

Solve: 3x^2-11=0 Is the answer" +- sqrt 11/3?
22. ### math

Solve the equation and check your solution 2/5+1/y-5=y-7/5y-25.
23. ### simple math check

(1/2)(3x^2+5x+3)^(-1/2)(6x+5) when you plug in 5 for x.. do you get 1.72 because that what i get and then it says im wrong.

1. (4i) + (2 + 8i) = 2 + 12i 2. 6i + 4i = 10i
25. ### english

i had a parargrahp writen i want you to check if its right orno t.
26. ### algebra

factor by grouping if possible and check 5x^3+4x^2-10x-8
27. ### Math

Divide and Check 4x^4y-8x^6y^2+12x^8y^6 _______________________ 4x^4y
28. ### Algebra

synthetic division find f(-2) f(x)=2x^4+4x^3+2x^2+3x+8 -2 2 4 2 3 8 -4 0 -4 2 2 0 2 -1 10 f(2)=10 check f(x)=2(-2)^4+4(-2)^3+2(-2)^2+3(-2)+8 f(x)=10
29. ### Maths Algebra

Solve and check the result.3(5x-7)-2(9x-11)=4(8x-13)-17
30. ### Maths

Quadratic Graphs Y=x^2-7 These are my values can you please check X=-4 so y=9 X= -3 so y=2 X=-2 so y = -3 X= -1 so y=-6 X=1 so y=-6 X=2 so y=-3
31. ### math

x+4/2x*6x^2/x^-16= (x+4)/2x*6x(x)/(x+8)(X-8) rational expression using factoring could some check this.
32. ### Algebra 2 Answer Check

Solve. 2x + 4(x + 1) = 6(x + 2/3) A: No solution.
33. ### algebra

simplify each expression 44/9x-7/4+12/7x+1 I worked it out and just went to check it thank you

Does 0.21 * 0.05 = 0.0105? * means multiply. Yes.
35. ### Math 222

Please check this to see if I am doing it correctly. g^2-6g-55/ g g=0 Because you can not divide by zero
36. ### English

Name five of the six points you should check in practicing your speech.
37. ### 5 th math

what is 1/8= ? Equivalent fraction THIS IS WHAT I GOT ? = 2/16 ,4/32 AND 8/40. CAN YOU PLEASE! CHECK IT FOR ME MS. SUE THANKS!!
38. ### accounting

CHOI ENTERPRISES Inv. No. Check Date Description Name or Date No. Terms Amount Dec. 16 Merchandise sold (cost \$4,600) Hanna Seppa 916 2/10, n/30 \$7,700 17 Received credit memo on returned merch. Funk Company Dec. 15 1,040 17 Purchased office supplies KK's Supply Company Dec. ...
39. ### Trig

If secx = 8 and -pi/2 < x < 0, find the exact value of sin2x Use the identity sin 2x = 2(sinx)(cosx) if secx = 8, then cosx = 1/8 where x is in the fourth quadrant. consider a right angled triangle with x=1, r=8, then y=?? by Pythagoras 1^2 + y^2 = 8^2 y = -√63 (it...
40. ### trig

A person is standing 90 feet away from the Space Needle. The person looks up at the Space Needle at an angle of elevation of 81 degrees. The distance from the floor to the person's eye level is 5 feet. What must be the height of the Space Needle?
41. ### trig

A car is on a driveway that is inclined 12 degrees to the horizontal. A force of 470lb is required to keep the car from rolling down the driveway. a) Find the weight of the car b) Find the force the car exerts against the driveway
42. ### Trig

A 24-foot ladder is placed against a building. The building is perpendicular to the level ground so that the base of the ladder is 11 feet away from the base of the building. How far up the building, in feet, does the ladder reach? Round to nearest hundredth.
43. ### English

1. Research projects that have won Ig Nobel Prizes are real, serious scientific work. 2. Research projects that have ever won Ig Nobel Prizes are real, serious scientific work. (Does #1 mean #2? What is the meaning of 'have won'? Does 'have won' mean 'experience in the past?) ...
44. ### tan x = 1/2

Can someone tell me what the radian value is for this number and how they got it? Thanks On a graph plot the point A(2,1) Let C(2,0) be the point on the x-axis x is the angle AOB and tan x = 1/2 Since angle x is not one of the special angles, you will have to use a calculator ...
45. ### Trigonometry

Two students are passing a ball back and forth, allowing it to bounce once between them. If one students bounce passes the ball from a height of 1.4 m and it bounces 3 m away from the students, where should the second student stand to catch the ball at a height of 1.2 m? ...
46. ### Education technology

including the elements of design in visual art? The elements work together to help influence thoughts and emotions The elements are mandatory in any piece of art work Art is not art without each element The elements are individual and only element should be used in each piece ...
47. ### Math: Trig

Help with vectors, please. Thanks 1) Express point in rectangular form. Give EXACT answer, if possible? (2, 4π /11) 2) Given P = (2. -3) and Q = (-3, -4). find the component form of vector PQ 3) The vector v has a magnitude of 25 inches and a direction of 32° , Express ...
48. ### trig

A ship is passing through the island of corregidor. at its closest point of approach, Corregidor radar determines that it is 2, 400 meters away. Later, the radar determines that it is 2, 650 meters away. a.) By what angle did the ship's bearing from corregidor change? b.) How ...
49. ### trig

A 600,000-cell bacteria culture is needed for a lab experiment, but you only could purchase 1,000 cells. If the cells double each day, exactly how long will it be before the experiment can be run? Create a model for the bacteria. If the experiment is in seven days, how many ...
50. ### Physic

A person pulls a toboggan for a distance of 43.1 m along the snow with a rope directed 33.3 ° above the snow. The tension in the rope is 109 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension is directed parallel ...
51. ### physics

A person pulls a toboggan for a distance of 34.6 m along the snow with a rope directed 29.3 ° above the snow. The tension in the rope is 110 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension is directed parallel ...
52. ### trig length

To secure a 610-meter radio tower against high winds, guy wires are attached to a ring on the tower. The ring is 7 meters from the top. The wires form a 69o angle with the ground. To the nearest hundredth meter find the length of the guy wire
53. ### 11th grade math algebra 2 trig

you are buying beads and string to make a necklace. the string coast \$1.50 a pack of 10 decorative beads costs \$0.50 and a pack of 25 plain beads costs \$0.75 you can only spend \$7.00 and you need 150 beads you wish the necklace to be as decrative as possiable how many packs of...
54. ### math (more trig)

how could you do this problem? tinyurl 39jlf9 (sorry i cant get it to post because it is an internet address i cant seem to figure it out and it seems like there is not enough information or maybe i didn't pay attention in class i was able to get the one side that you can get ...
55. ### trig

In a rignt angle base is 20 mtr,adjacent side is 6 mtr, hypotenus is 20.88 mtr, what is the degree of angle of hypotenus and base
56. ### Pre-Calc/Trig

How?? I only know how to convert standard form functions into intercept form, but I do not understand how to do this. Convert the functions into standard form. 1.y=2(x-4)(x+3) 2.y-2=-3(x+4)^2
57. ### Trig

4tan^2u-1=tan^2u 3tan^2u=1 tan^2u=1/3 sq. root of (tan^2u)=sq. root of (1/3) tanu=sq. root of (3)/3 tanu=sq. root of 1 Did I do this one right? If not, could you please show me the correct method?? Thanks!
58. ### trig

In a rignt angle base is 20 mtr,adjacent side is 6 mtr, hypotenus is 20.88 mtr, what is the degree of angle of hypotenus and base
59. ### Physics

A 0.1134kg spherical meteor of diameter 3 cm enters the earth’s atmosphere at an elevation of 121920m with a velocity of 13411.2 m/s. The meteor’s temperature is -73.15˚C. The specific heat at constant volume (Cv) of the meteor is 800 J/kg˚C. (a) If the meteor has a ...
60. ### Algebra - sqrts

Square roots. Woohoo. Want to check some work I did. 1. Perform indicated operations 3sqrt[3]+2sqrt[27]-sqrt[12] 3sqrt[3]+2sqrt[3*9]-sqrt[2*6] 3sqrt[3]+3*2sqrt[3]-2sqrt[3] 3sqrt+6sqrt[3]-2sqrt[3] = 7sqrt[3] 2.Simplify sqrt[49x^12y^4z^8] = 7x^6y^2z^4 3.Multply (8sqrt[6]+3sqrt[2...
61. ### trig

suppose that sin(x) + cos(x) = 4/3 a)square this result and find a value for sin(x)cos(x). b)using the result from a) find the exact value of sin^3(x)+cos^3(x). (Hint: Do you recall how to factor x^3 + y^3)
62. ### English

I used your synonym link. I included the words I found in parentheses. Can you check if they are appropriate, please? Thank you. ) The festival is held in Park City, Utah and represents one of the world’s premier showcases (synonym: main settings?) for new, independently ...
63. ### chemistry

Label each of the following reactions as exothermic or endothermic ("exo" or "endo"), and according to whether work is done on or by the system ("on" or "by")? Note that no "en-on" cases appear here, as these are always thermodynamically unfavourable. There is no need to do ...
64. ### algebra

If trend for the depreciation of the press continued, what would be its value in the year 2015? Show how you obtained your answer using the linear equation you found in part c). Answer: Show or explain your work here: e) If the trend continued, in how many years would the ...
65. ### Chemistry

Sulfur dioxide is used to make sulfuric acid. one method of producing it is by roasting mineral sulfides, for example, FeS2(s) + O2 (g) ---> SO2(g) + Fe2O3(s) (unbalanced). A production error leads to the sulfide being placed in a 950-L vessel with insufficient oxygen. ...
66. ### Chemistry

Thanks for your help; I am still have a few problems, could you check my work: Given: Volume of vinegar analyzed-5mL Con'c of NaOH-0.09890M Avg. Volume of NaOH from titration-43.75mL Density CH3COOH: 1.049g/mL Calculations: 1.Moles of NaOH required to reach equivalence point= ...
67. ### Math 8R: Homework Check - Part 4

Part 4: Translate and solve: 25. 6 less than twice a number is ten Answer : 2n - 6 = 10 (answer: n = 8) 26. The quotient of a number and 4 plus 3 is 8 Answer: n/4 + 3 = 8 (answer: n = 29) 27. 4 less than three times a number is -28 Answer: 3n - 4 = -28 (answer: n = -8) 28. ...
68. ### world history

1. Imagine you work in a steel mill in a large industrial city in England in the late 1800s. You live in a neighborhood with other factory workers, and share the same living and working conditions they do. Write a letter to your representative in Parliament expressing your ...
69. ### Literature

This is one of my pre-writing exercise: Have you ever noticed that some reviewers list the criteria they use to evaluate something right in their review? When you write your essay, you'll need to be clear what criteria you used to evaluatate the work. In this exercise, make a ...
70. ### Social Studies (Check, Please!)

What methods did Hitler use to try to exterminate Europe's Jewish population? A: Hitler used multiple methods to try to exterminate Europe's Jewish population. One method consisted of rounding up Jews, Gypsies, and Slavs from conquered areas, shooting them, and piling them ...
71. ### Law

1. Punishment would probably work best for which of the following individuals? A. An actively using drug addict who was arrested for petty larceny B. A teacher who had a relationship with a 16-year-old student C. A sociopath who has been treated for mental illness for much of ...
72. ### French check my answers

I had to write 20 sentences , 2 sentences for each answer with 10 verbs in the present form and reprise. Please check my answers and help me to correct them, thanks 1. Je chante. Je peux chanter. 2. Tu dessine. Tu peux dessiner. 3. Il danse. Il peut danser. 4. Elle marche. ...
73. ### English

Assignment: Type impressions, feelings, and thoughts in a one-page diary entry. Recall your earliest experiences with art. What did you do? Did you enjoy art? Why? How did your parents or teacher respond to your art? How do you feel at present about your artistic development...
74. ### Trig

Can anyone help with this question. Now suppose that, starting with the ﬁrst row of seats, the ﬂoor of the seating area is inclined at an angle of Theta = 25 degrees above the horizontal, and the distance that you sit up the incline is x, as shown in the ﬁ...

Can anyone help with this question? Now suppose that, starting with the ﬁrst row of seats, the ﬂoor of the seating area is inclined at an angle of Theta = 25 degrees above the horizontal, and the distance that you sit up the incline is x, as shown in the ﬁ...
76. ### Math - Algebra

A. Solve the following quadratic equations. Make sure to show all your work. Do not use any method (e.g. factoring, completing the square, quadratic formula, graphing) more than twice. Use the graphing method at least once. 1. 3x+2 + 11x -20 =0 2. x2 + 3x -4 =0 3. 3x2 - x - 1...
77. ### physics

7. No work is done by gravity on a bowling ball resting or moving on a bowling alley because the force of gravity on the ball acts perpendicular to the surface. But on an incline, the force of gravity has a vector component parallel to the alley. Discuss the two ways this ...
78. ### Physics

A 45 kg trunk is pushed 7.8 m at constant speed up a 30° incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is 0.23. a)Calculate the work done by the applied horizontal force. b)Calculate the work done by the weight ...
79. ### Physics

A hovercraft of mass 69.0 kg can move on a horizontal surface, the x-y plane. A single unbalanced force acts on the hovercraft, but the size of the force is unknown. The hovercraft initially has a velocity of 5.0 m/s in the positive x direction and some time later has a ...
80. ### Check my CALCULUS work, please! :)

Question 1. lim h->0(sqrt 49+h-7)/h = 14 1/14*** 0 7 -1/7 Question 2. lim x->infinity(12+x-3x^2)/(x^2-4)= -3*** -2 0 2 3 Question 3. lim x->infinity (5x^3+x^7)/(e^x)= infinity*** 0 -1 3 Question 4. Given that: x 6.8 6.9 6.99 7.01 7.1 7.2 g(x) 9.44 10.21 10.92 -11.08 -...
81. ### physcis

a flight attendant pulls her 70 kg flight bag in an airport terminal holding the handle 50 degrees above the horizontal. she pulls the bag a distance of 200 m while exerting a 40 n force acting along the handle with a constant speed how much work does the flight attendant ...

1.)Find dy/dx when y= Ln (sinh 2x) my answer >> 2coth 2x. 2.)Find dy/dx when sinh 3y=cos 2x A.-2 sin 2x B.-2 sin 2x / sinh 3y C.-2/3tan (2x/3y) D.-2sin2x / 3 cosh 3yz...>> my answer. 2).Find the derivative of y=cos(x^2) with respect to x. A.-sin (2x) B.-2x sin (x^2...
83. ### P.E. CHECK

15. Who should address the needs of a patient with a mental disorder? A. speech therapist B. An internal Medicine Doctor C. A mental health Professional*** D. A medical intern 12. If you've started a lot of hobbies all at once, you should watch out for clinical depression to ...
84. ### Math - Trig

From the foot of a building I have to look upwards at an angle of 22degrees to sight the top of a tree. From the top of a building, 150 meters above ground level, I have to look down at an angle of depression of 50degrees to look at the top of the tree. a. How tall is the tree...
85. ### Honors Trig.

A plane is flying at a speed and direction of 550 mph, 25 degrees north of west. There is a wind of 28 mph, at an angle of 19 degrees south of the east direction. How fast is the plane actually flying? What direction is the plane traveling?
86. ### trig

An electric pole is supported to stand vertically on a level ground by a tight wire. The wire is pegged at a distance of 6 meters from the foot of the pole. The angle that the wire makes the ground is three times the angle it makes with the pole.
87. ### Trig

Problem: A cable from the top of a 60 foot high tower is to be attached to the ground (x) feet from the base of the tower. A) if the cable makes an angle of t radians with the ground when attached, express t as a function of x. B) if t = pi/5, how far is the end of the cable ...
88. ### english

1. In “At the Tourist Centre in Boston,” the speaker's tone can best be identified as (1 point) disapproving. downcast. enraged. sarcastic. 2. Which line from the poem best supports the tone identified above? (1 point) "the green of the trees dulled;" "where two children ...
89. ### My Retyped Algebra Post

1. Use the arithmetic sequence of numbers 2,4,6,8,10.. to find the following: a)What is d, the difference between any consecutive terms? Answer: Show work in this space: b)Using the formula for the nth term of an arithmetic sequence, what is 101st term? Answer: Show work in ...
90. ### Phyiscs-Energy conservation

An escalator in a shopping centre carries people up through a height h at a vertical speed of v, but you’re in a hurry when you step onto it, so you climb the moving steps (each with a height of h ) at a rate of n steps/s. Determine: 4.1 the amount of chemical energy ...
91. ### Chemistry - Gas Laws

Liquid helium at 4.2 K has a density of 0.147 g/mL. Suppose that a 1.00-L metal bottle that contains air at 118K and 1.0 atm pressure is sealed off. If we inject 120.0 mL of liquid helium and allow the entire system to warm to room temperature (25 °C), what is the pressure ...

His first fight was for his health and vigor. It all began at the age of nine. As a child, he was weak and thin because of his asthma. His father, the first Theodore, motivated him to fight his ill health. On the third floor of the house in New York where he was born, his ...
93. ### Trig functions

The average depth of the water in a port on a tidal river is 4m. At low tide, the depth of the water is 2m. One cycle is completed approximately every 12h. a)Find an equation of the depth, d(t)metres, with respect to the average depth, as a function of the time, t hours, after...
94. ### Algebra

Jesse Played two days of golf. On the second day, he got a score of six bellow par, or -6. His total score for the two days was o above par, or 0. Define a variable. Then write and solve an equation to find the score Jesse got on the first day. Show your work! Do you think you...
95. ### trig

1-cosA+cosB-cos(A+B)/1+cosA-cosB-cos(A+B)=tan(A/2)ct(A/2)
96. ### Trig

prove (cscx-secx/cscx+secx)=(cotx-1/cotx+1)
97. ### English

Posted by rfvv on Saturday, May 22, 2010 at 2:09am. 1. How about goind economics camp? 2. How much did you spend? I bought a \$50 shirt and a \$5 socks. (Would you check the expressions? Please correct incorrect expressions?) English - SraJMcGin, Saturday, May 22, 2010 at 2:11am...
98. ### English

Thank you very much. A few other things on sentences I need to check. They are really awkward to check. 1) Which of the following are possible? The novels were told/written in the first or third person singular (?). We have a first or third person narrator. 2) The author ...
99. ### Trig

On the same set of axes, sketch and label the graphs of the equations y = cos 2x and y = –2 sin x in the interval 0 ≤ x ≤ 2π. How many values of x in the interval 0 ≤ x ≤ 2π satisfy the equation –2 sin x – cos 2x = 3? A.1 B.2 C.3 D.4 E.0
100. ### trig

ferris wheel one has a 40ft diameter, revolves once every 30 seconds and is 5ft above ground. Ferris wheel two has a diameter of 20feet, revolves once every 15seconds and is 2 feet above the ground. each angular velocity?? each linear velocity??