# Trig check my work please?

90,377 results, page 49

1. ### Trig

Please help with this one. I've worked it out in so many ways and can't tell what's correct. sinA sinA ----- - ------ 1+sinA 1-sinA Which answer is correct for the problem above? a) 1+cotA b) sinA tanA c) -2tan^2A d) secA cscA common denominator: 1-sin^2 A and that is equal to...

please check my answers thanks 1. A 2. D 3. B 4. B 5. A 1. which geographic features lies east of the andes moutains? A. saltwater grasses B. active volcanoes C. llanos grasslands D. mangrove swamps 2. Which landform can be found in the andes mountains? A. savannas B. ...
3. ### math

Here's my question: Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the ...
4. ### Calculus

The tank shown is full of water. Given that water weighs 62.5 lb/ft3, find the work required to pump the water out of the tank. The tank shown is a hemisphere with r = 5 ft. The water is to be pumped out at the top. First I solved for ri, ri / (5 - xi) = 5 / 5 ri = 5 - xi Vi...
5. ### English Expressions

1. I work in that building across the street. 2. I am a computer programmer/ a computer scientist. 3. I am a banker/ bank clerk / bank employee / teller / 4. I am an information provider. 5. I am a prosecutor. 6. I am a lawyer/attorney. (Are both the same? Which one is popular...
6. ### social studies

i have a crossword puzzle but i have one word i can't figure out.the clue: the------i- coastal plain is a strip of land that begins in the norteast and runs along the east and gulf coasts.please help me. http://en.wikipedia.org/wiki/Atlantic_Coastal_Plain can you give me an ...
7. ### Math check

Average cost = q^2¡V15q + 48 Calculate the output level (q), which minimizes a)Total Cost b)Marginal Cost I got an answer for a) is q=8 and b) is q=5 I need somebody to check it for me, thanks so much.
8. ### physics

a 1.50 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.21 m/s, and at point B it has slowed to 1.25m/s. 1.) How much work was done on the book between A and B? 2.) If -0.750 J of work is done on the book from B to C, how fast is it moving at ...

Approximately 4 out of every 10 students at Sonia's college live on campus. The college has 3,000 students. 1. How many of them live on campus? A 1,200 students 2. Write the proportion 21 is to 33 as 63 is to 99. A. 21/33 =63/99 3. is this fraction proportional? 3/11=7/19 A. ...
10. ### trig

1. Write a sinusoidal function for the function with a period of 6. The function has a max of 3 at x=2 and a low point of -1. 2. Write a sinusoidal function for the function with a period of 5. The function has a max of 7 at x=1. explain it in full detail please
11. ### Trig.

Can you please review this to see if I did this right? 2cos^2x+3cosx=0 sq. root of (cos^2x)+(cosx)=sq. root of (-3/2) 2cos=(sq. root of -3 times sq. root of 2)/2)) times 2/1 cos=(2 times sq. root of -3 times sq. root of two)/2))

Please Please HELP!!!! I need the answer to this and i've worked it out but I don't know if it is correct... Please check my answer!!!! The polygons are regular polygons. Find the area of the shaded region to the nearest tenth. I can't post a picture of it but it shows a ...
13. ### math

factor down (4^3)^2 ____ * _____ ______ _______ ______*______ _____ ____ when is it not possible to work an exponent multipication? In the space below give an example and work it out to prove what you say does not work
14. ### Pre-Trig/Calc

Please help :) A potato is put into an oven that has been heated to 350F. Its temperature as a function of time is given by T(t) = a(1 - e-kt) + b. The potato was 50F when it was first put into the oven. What is the value of b in this context? Explain. What is ...

If a population has a standard deviation σ of 18.2 units, what is the standard error of the mean if samples of size 25 are selected? Show all work. standard error of the mean = 0/sqrt(n) = 18.2/sqrt(25) = 18.2/5 =3.64 Answer 3.64
16. ### Chemistry

Can someones please check my work? 1. Why does a liquid take the shape of whatever container it is in but does not expand to fill the container completely? A: It takes the shape of its contaienr because its particles can slip past each other. but it has fixed volume and does ...
17. ### calculus

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
18. ### calculus

Could somebody please check these for me? Solve the differential equation with the given initial solution. 1. (dy/dx)=(-y/3) for y(0)=10 my answer was y=10e^(-x/3) 2. dP/dt=P+4 for P(0)=100 my answer was P=104(e^t)-4 3. dz/dt=te^z for z(0)=0 my answer was z=-ln(-.5(t^2)+1) THANKS
19. ### Chemistry

Are the following compounds or mixtures? Please help to check the answers. 1) starch - compound 2) chalk - compound 3) coal - mixture 4) drain water -compound
20. ### Algebra1

Please check these 25. If a dress were 20% off of the marked price of \$32.00, how much would it cost? \$25.60 26. Write 1,000,000,000 in scientific notation 1.0 x 10^9 27. (3.0 x 10^2) x (2.0 x 10^6) = ? 6.0 x 10^-4
21. ### Energy

Without energy we can't do work cuz we can't apply ne force on an object. Gravity, itself a force, when, say, pulls a ball down to the gorund it actually does work. Now for that force, where does it get the energy from or what type of energy does it have? If u have a book ...
22. ### check my work geometry volume

Find the missing measure for each pyramid 1) area of base = 1,470 cm^2 volume= 22,050 cm^3 what is the height?______ I got 15cm^2 2) height = 26 feet volume= 11,466 ft^3 what is the area of the base?_____ I got 441 ft^2 Thank you!
23. ### Micro Economics

Assume that the market for annual physical check-ups is in equilibrium, and not everyone gets an annual physical check-up. What is the effect on price and quantity if a government regulation fixes prices at the current level and requires everyone to get an annual physical ...

This is my problem: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25s? This is my ...
25. ### Career

1. Lee has not been showing up to work on time. Which work ethic is he lacking? initiative punctuality teamwork etiquette 2. Demonstrating the proper way to shake hands is an example of: workplace etiquette. work ethics. employee performance. teamwork. 3. Today's employers are...
26. ### English

Writeacher,can you please check if everything is correct? Thank you. 1) Can you give me a hand to finish this exercise, please? 2) The answer to your question is on he tip of my tongue. 3) Behave yourself! Don't shrug your shoulders! 4) I can't see at a distance. I think you ...

How can you determine if the given lines are perpendicular? Line 1: (-1,3) and (3,-3) Line 2: (-3,0) and (3,3) A)determine if they have slopes with opposite values*** B)determine if they have the same slope C)determine if the product of their slope is 1 D)determine if the ...
28. ### SOCIAL STUDIES

I need to know about current events happening in France. Please list some current events or give me some helpful sites. Thanks!!!:):):):):):):) (GuruBlue the site you gave me didn't work instead it brought me to google so please try giving me HELPFUL sites)Thanks!!!!!!!!
29. ### Physics

A box of mass 250 kg slides 4.6 m down an inclined plane of 31°. Jim pushes against the box to keep it from accelerating. The coefficient of kinetic friction between the box and the ramp is 0.41 (a) Calculate the magnitude of the force exerted by Jim. (b) Calculate the work ...
30. ### Physics

A wheel with a weight of 395N comes off a moving truck and rolls without slipping along a highway. At the bottom of a hill it is rotating at an angular velocity of 23.0rad/s . The radius of the wheel is 0.607m and its moment of inertia about its rotation axis is 0.800 MR2. ...

I am a teacher. I teach the fifth grade. Dose any body have an idea of a good book I could read them. Thank YOU. Please check the many books listed at this site. (Broken Link Removed) Thank You very much
32. ### Chemistry

Can someone please check my answer...thank you! According to Raoult's law, as the mole fraction of dissolved nonvolatile solute in a given amount of solvent increases, the solution vapor pressure: VARIES AT RANDOM?
33. ### Health/ Basic Clinical Procedures

Please check my answer thanks Which one of the following elements is necessary for bacterial microorganism to grow ? A. light B. body temperature C. acid environment D carbon dioxide I pick B
34. ### Health/Specialty Exams and Advance Techniques

Please check my answer to this question thank you Early detection of testicular cancer relies on A a cystoscopy B self-exam by the patient C good nutrition D exercise I picked B
35. ### Applied Dog Behavior

Please check my answer thanks 7. _______ reported using a "cricket" to train animals as early as 1951. A. B. F. Skinner B. Ivan Pavlov C. Gary Wilkes D. Sigmund Freud I picked A
36. ### thanks alot damon check

water pollution in the united states and canada is caused by: A) acid rain b)runoff agriculture chemicals C)industrial wastes D)all of the above i think c if wrong please correct
37. ### Technology

i'm not really sure about this answer, because i didn't find it in my book. i think i'm correct. please check: 10. A wrench uses the principle of a(n)__________ in its operation. a. lever b. inclined plane c. pulley d. wheel and axle B?

The first offense for federal trafficking penalties that is not less than 10 years and not more than life applies to wich drugs: a) cocaine b) Heroin c)Methamphetamine d)LSD e)none of the above My answer is E.

The first offense for federal trafficking penalties that is not less than 10 years and not more than life applies to wich drugs: a) cocaine b) Heroin c)Methamphetamine d)LSD e)none of the above My answer is A
40. ### English

Could you please check this sentence I need to include in a letter? 1) Thank you very much for your last e-mail. Unfortunately, I couldn't read the document attached to it. 2) Actually, it was blank. Can you post (send) it to me again (once more, another time).
41. ### Math Ms Sue check

How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2: -(9x^2)? 5. 5x(2x^2)^2 ...

find the lateral area of a cone with a radius of 7ft. and slant height of 13ft, use 3.14 for pi and round the nearest tenth. . . . . A.439.6 ft^2 . . . . . B.324.5 ft^2 . . . . . . C.571.5 ft^2 . . . . . . D.258.7 ft^2(I PICKED THIS ONE)

3. Which of the following pairs of terms could be used to describe a bullfrog that is active at night and enters a state of complete inactivity during colds months? . . . My answer: Circadian rhythm and hibernation.

Which choice is a complete sentence? A- Stacks of books to be shelved. B- When Francine cooked dinner for the first time. C- The actor played the leading role. D- Gave her a blue bicycle for her birthday. I think it is C.
45. ### vocab

i don't know none of this . PLEASE HELP!!! words: attest, attribute, discern, dispatch, enhance, enigma, exemplify, mobile, nocturnal, orient. Sentence check 2 for chapter 8 on improving vocabulary skills fourth edition

choose the linking verb to complete the sentence Gemma _____ the first female winner of the annual poetry contest? congratulated photographed became knew
47. ### World History

Question 16 (Multiple Choice Worth 5 points) Please check: (05.05 LC)Which of the following is not considered a cause of the Enlightenment? increased availability of printed books the Scientific Revolution *******decline in the education system******** the Renaissance
48. ### History

Please check! 2. What changed almost every aspect of life in South Carolina in the late 1800s? a. the discovery of gold b. the rise of inflation c. the election of President McKinley d. the development of electric power***
49. ### S.S

1)Which geographic feature marks the last natural obstacle for Georgia’s rivers on their way to the Atlantic Ocean? A)the Floridian Aquifer B)the Valley and Ridge region C)the Fall Line D)the Marshes of Glynn<<?? Check my answer please.
50. ### precalculus

Can you please check these answers. In exercises 10-13 , find (a)2v+u, (b)u-3v), and (c)5u-v. 10.u=<0,-4>, v=<-2,-8> a) 2v+u = <-4,-16) + <0,-4) = <-4, -20> b,u-3v =<0,-4>- <-6,-24> =<6,20> c) 5u - v = <0,-20> - <-2,-8) = <...
51. ### chem

how many grams of sulfur are needed to react w/ 246 grams of mercury to form HgS? Hg + S ==> HgS unless your instructor insists on writing S as S8, in which case it will be 8Hg + S8 ==> 8HgS. The answer will be the same no matter which way the equation is written. I ...
52. ### English

Can you check these sentences,please? Thank you very much. 1) How big/large is the population of New York? Are they both correct? 2)He was dismissed last year and he hasn't found a job yet. 3) He's been working for three years as a mechanic at an assembly line. 4) The girl in ...
53. ### accouting

The ledger of Custer Company has the following work in process account. Work in Process—Painting 5/1 Balance 4,820 5/31 Transferred out ? 5/31 Materials 5,710 5/31 Labor 4,800 5/31 Overhead 2,430 5/31 Balance ? Production records show that there were 410 units in the ...
54. ### PHYSICS HELP

If the external world does work on the system, the quantity of work is negative. Is negative right or is it positive? If you are writing the system equations, the work done by external forces will be a + number, indicating an increase of energy to the system.
55. ### Algebra

Will someone please check my answers? 1. Multiply. (a^+2ab-b^2)(a^2-7ab+b^2) my answer:a^4-5a^3b-14a^2b^2+8ab^3-b^4 2. Simplify. (p^6)^2 ________ P^8 my answer:p^4 No, you got the first wrong. Recheck . Yes on second.
56. ### English

please check my answer thanks :) In addition to the information you include in a document, the_________ of your writing sends a message to the reader tone method length phase I picked tone
57. ### Law and Ethics in Med

please check my answer thanks :) Confidentiality of medical information is protected by...... 1. the US Constitution 2. no laws at all only by custom 3. none of the above My answer... I said #2
58. ### History of health care

Please check my answer tahnks :) Capitation is the least type of medical service reimbursement used today True or False I said True
59. ### Anatomy and Physiology

Please check my answer thanks True or False The process of breaking a complex substance down into smaller components is called metabolism I said true
60. ### Health/ Basic Clinical Procedures

please check my answer thanks True or False the review of systems is a history of the patient's previous diseases, injuries and operation . I said False
61. ### spanish

please check this: En el invierno, uno debe _____ después de ducharse y antes de salir de la casa. a. ducharse b. secarse el pelo c. levantarse tarde d. despertarse temprano B?
62. ### spanish

please check: "¿Dóonde está mi chandal azul?" "Creo que está en _____." a. el catálogo b. el vendedor c. el cesto de la ropa sucia d. el suéter de cuello alto C?
63. ### math

Which should be used a permutation or combination? Determine the number of different ways in which a committee of four can be chosen from a group of twelve members? please check my answer = combination
64. ### English

Could you please check these sentences for me? Thank you. 1) She doesn't want me to watch it because she thinks it is a programme with no ideas, in which characters often shout at one another. 2) She gets on well with her younger brother. 3) They don't go out with each other ...
65. ### Health

I left out two last sentences, Writeacher. Could you please check them? 1) I have no credit on my phone. I need to top it up. 3) They are trying out a new vaccine against cancer.
66. ### Medical

When a physician is billing under the RBRVS system, he or she is using A. APCs. B. HCPCS/CPT codes. C. MS-DRGs. D. ICD-9 procedure codes My answer is (B) check this one for me please
67. ### science question

please check i think its B or D. Under which conditions are clouds formed from ice crystals? A.strong winds B.high altiude C.low humidity D.high pressure

According to the first derivative test, a differentiable function must have a relative minimum between any two relative maxima. True.
69. ### Writing

Please check this thesis statement. Thesis: While some college students want to be completely independent by leaving home, it is worthy to note that dependence is necessary at times.
70. ### English

1. Do you want to stop practice? 2. Do you want to stop practicing soccer? 3. He sent a message to Tom about the photos uploaded on the website. ------------------------------- Are the sentences all grammatical? Would you check the please?
71. ### psychology

In class we were asked to provide an one example of classical and operant conditioning. We have to identify the stimulus, response and reinforcers in each example. here are my examples: Clasical Conditioning- My cat comes running everytime she hears the can opener. Operant ...
72. ### Calculus

1. Use the Mean Value Theorem to find an x-value where the instantaneous slope=average slope over the given interval: f(x)=(9-x^2)^(1/2) on [-3,2] I have done three chapters of Calculus already and I never have had to check for extraneous roots. So, my question is, when ...
73. ### math

beads for sale: 12 cents for 15. Write an equation relating the cost (c) and the number of beads (n0 for the beads. Katie or Halida or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your ...
74. ### English

Could you please check these sentences? I urgently need them. 1) Decadent writers (the Aesthetes is possible?) fostered (??) the ideal of the Wildean dandy, a member of aristocracy who demanded absolute freedom and despised the Victorian values of work and morals. 2) His ...
75. ### algebra

please review the questions and table and check my answers. tank you tutors. table planets' orbital velocity planet orbital velocity (mi/s) mercury 29.74 venus 21.76 earth 18.5 mars 14.99 jupiter 8.12 saturn 6.02 uranus 4.23 solve. show your work. express the answer in ...
76. ### English

1. He had to help his grandpa get work. 2. He had to help his grandpa get a job. 3. He had to help his grandpa get a work. (Does #1 have the same meaning as #2? What about #3? If we add 'a' before work, is it correct?)
77. ### Honors Biology

Can someone check my work please? We had to fill in the blanks of a short paragraph with the correct keywords, but all these acronyms (I think that's what they're called ;P) confuse me. My answers will be in parentheses. " The Calvin Cycle begins when one molecule of carbon ...

these words wont show the right def. when i type it in the dictonary search bar **but i do no u ladys can not do my work for 4 sure But really need help badly i have 11-30 to do and its 9:30 please help anyone thax:] *prefixes* ante arch bi demi equi extra non omin ortho semi...

The dollar value of a stock x weeks after a change in management is give by the function: f(x) = x²-14x+30ln(x+1)+32, 0≤x≤7. Find the intervals when the value of the sock was increasing and also determine the maximum value of the stock during this time. PLEEASEE ...
80. ### Math

If a trip between work and home takes 15 minutes each way how much till will be spent in a 5 day work week traveling back and forth to work? (assume that at no point does the employee have to go home and come back within the same day) Would the proportion be 15/5
81. ### college algebra help******

You intercepted the following message from Boris and Natasha. 25 19 19 30 41 17 15 26 27 41 15 28 18 41 18 29 41 34 22 19 41 27 15 34 22 You do not now the encoding or decoding function but from previous work with Boris and Natasha you know their encoding and decoding ...
82. ### Trig Identities

Proving identities: 1) 1+ 1/tan^2x = 1/sin^2x 2) 2sin^2 x-1 = sin^2x - cos^2x 3) 1/cosx - cosx = sin x tan x 4) sin x + tan x =tan x (1+cos x) 5) 1/1-sin^2x= 1+tan^2 x How in the world do I prove this...please help... I appreciateyour time thankyou soo much!!
83. ### Chemistry

Can someone please check my work? Which of the four factors affecting reaction rate is most important in each exampel below? Choose from among concentration, temperature, surface area, and catalyst. a. Extra dish soap is added to help cut the grease when washing a frying pan...
84. ### ap Physics

1. a)A 15.6 kg block is dragged over a rough, horizontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234.Find the work done by the 72.2 N force.The ...
85. ### World Religions

Many people see life on earth as constant worry, physical poverty, spiritual alienation, sickness, hatred, mindless toil, and death. The ultimate goal of nirvana or being one with the Atman seems infinitely better than suffering on earth. For more information, check this site...
86. ### Math C30 ( trig )

A roof in the shape of an upside down cosine wave is to be buile to cover an arena. The arena is 24m wide, the height of the roof at either side wall is 5m, and the maximum height of the roof is 9m. A) write a function that gives the height of the roof in terms of your ...
87. ### PHYSICS PLS HELP WITH THIS QUESTION !

A 1100-kg elevator is lifted at a constant speed of 1.5 m/s through a height of 20 m. a)How much work is done by the tension in the elevator cable?How much work is done by gravity? b)How much work is done by gravity?
88. ### Math 20 measurement

Please check to see if I'm even doing this right. A cylinder has a volume of 1000 cm^3 ± 2% and a height of 100cm ± 1%. What is the radius of the cylinder? Report your answer with the appropriate percentage error.Here's my work: volume = [980, 1020] height = [99, 101] volume...
89. ### English

Can you please check these sentences for me? Thank you very much. 1) Storm wants to borrow Rob's bicycle pump because she wants to train for the triathlon. 2) In the beginning she didn't want to race (for the triathlon) but then she changed her mind. She was slow on her bike ...
90. ### english

1. You have to feed the baby with water sometimes. 2. You have to feed water for the baby sometimes. 3. The baby must have peed. You have to change the diaper. The diaper is wet. Will you bring a new diaper? 4. The baby gave out dung. Bring me a baby tissue. I will clean that ...

Please check: 1. What do you believe are essential qualities a leader must possess? - I believe the essential qualities a leader must possess are to set a vision and to be able to lead. A leader must be able to set a vision to seek for improvement and to change the mistakes. A...
92. ### Science

If you start a project at 5:45pm and you check on the project every 30 minutes for 3 hours, what times will you check on the project

Please check these out for me, if I am correct: Match the following statements with SN1 or SN2 reactions: 1) The order of reactivity in alkyl halides is methyl>primary>secondary>tertiary 2) There is an intermediate carbocation 3) The rate-limiting step involves the ...

A rocket car is traveling on a linear horizontal frictionless track when it suddenly runs out of fuel. The car has achieved a speed of 100 meters per second at the very moment the fuel is completely spent. The track then suddenly changes to a 30-degree incline from the ...
95. ### Maths Help !!!!!!!!!!!!

Hello I'm in grade 9 and i still get confused with the expressions and how to make then in maths although i'm queit very bright ! Any tips on this please thanx Practice. We learn by experience. You may want to buy an extra workbook at the bookstore, which has answers so you ...
96. ### Calculus

Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. HINT [See Example 3.] Enclosed by y = x and y = x^4
97. ### English

I need someone to check my answer on this question in an English quick check. Thanks :) 1. In adventures of huckleberry finn what is unusual about the house Huck and Jim find? A. it is completely empty B. it is floating C. there is no furniture I think A?
98. ### TRIG

what is another form of: sin (A+B) sin (A-B)/ cos^2 A cos^2 B a) cos^2 A - cos^2 B b) tan^2 A - tan^2 B c) tan^2 A - tan^2 B d) sin^2 A - sin^2 B please show the steps you take to get to the answer! thank you
99. ### 5th math

Nia scored 21 points in the game. If she scored 13 points in the first half of the game, how many points did she score in the second half? I subtract 21 from 13 and got 7? To check my work I added 13+7 and got 20?
100. ### Phyics help

I have a few physics questions: 1. How much mechanical work is done by a weightlifter holding a mass of 100 kg, 2.0m above the floor for 3.0 s? Explain ur answer. 2. Calculate the force needed to do 2.0 kJ of work to push a load of bricks 10m? 3. A carpenter applied a force of...