# Trig check my work please?

89,916 results, page 63

1. ### trig/precalc

a car's flywheel has a timing mark on it's outer edge. the height of the timing mark on the rotating flywheel is given by y=3.55sin[x - (pi/4)]. graph one full cycle of this function. I was not taught how to graph a function like this, only the simple y= sin x and y= cos x ...
2. ### Government US

The primary reason that the existence of Social Security greatly lessens the demand for other forms of social welfare is that a. Social Security is so popular that many people believe other welfare programs are neither necessary nor desirable. WRONG b. the anticipation of ...
3. ### calculus

find the solution of the differential equation dy/dt = ky, k a constant, that satisfies the given conditions: y(0)=50, y(5)=100 please show steps. INtegrate dy/dt I think the answer will be in the form of y=e^kt + C check that and see if it works. You should be memorizing your...
4. ### Teaching dogs Tricks

Please check my anwer thanks Funny sounds made by the owner combined with clicker training are a good way to train which of the following behaviors? A. Wave B. Pick up your toys C. Cock your head D. Go to a mark I pick C
5. ### Physics ideal gases

Would someone check my thinking please. PVT of an ideal gas (nitrogen) are all given. I've used PV=nRT rearranged to get the number of moles. Then, U= 3/2nRT to get the internal energy of the sample. Am I on the right track? Thanks.
6. ### chemistry

I got C_4 H_3 O_8 for this question but I'd like someone to check my answer, please. A 1.012 g sample of a compound containing C, H, and O was burned to produce 2.145 g CO2 and 0.3293 g H2O. Calculate the empirical formula of the compound
7. ### Social Studies

What was the purpose of the Freedmen's Bureau? A. to provide assistance to former slaves and poor whites B. to protect Georgia's landowners C. to create segregation laws for Georgia D. None of the above My best answer is A can you please check @Ms.Sue
8. ### Calculus

For y=(1/4)x^4-(2/3)x^3+(1/2)x^2-3, find the exact intervals on which the function is a. increasing b. decreasing c. concave up d. concave down Then find any e. local extreme values f. inflection points --- I thought it'd be better to find extreme values first, then you can ...
9. ### Physics (CHECK)

One student is pushing on a chair with a force of 260.6 N directed at an angle of 30 degrees above horizontal while a second student pushes on the same side of the chair with a force of 21.0 N at an angle of 15 degrees below horizontal. What is the magnitude, in N, of the sum ...

Is there a mistake with the superlative adverb? 1. Thomas sauntered casuallyier to the podium and waited. a. Change casuallyier to most casually . b. Change casuallyier to casualiest . c. Change casuallyier to more casuallyier . d. Make no change. 2.. Andre has the worst ...
11. ### Physics

The work required to stretch a certain spring from an elongation of 4.11 cm to an elongation of 5.11 cm is 32.0 J. (a) Is the work required to increase the elongation of the spring from 5.11 cm to 6.11 cm greater than, less than, or equal to 32.0 J? (b) Verify your answer to ...

Could you please check my answers we are using substitution to solve each system of equations. And at the end of every solution you are supposed to have an answer as a coordinate. 1. x=2y x+y=3 Answer (1,2) 2. 2y=3 x-y=10 Answer: (10,10) 3. y=x+7 x+2y= -21 Answer: (-3,-4) 4. ...
13. ### 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= ...
14. ### Calculus--> bobpursley

How do you get m=0? from taking the second derivative? does c=1? Can you check my work on how I get the derivative of R=M^2(c/2-m/3) NEXT R=1/2(CM^2)-1/3(M^3) NEXT dR/dM=CM-M^2. I checked in the back, and that was the answer for the first part of the equation. Isn't the ...
15. ### physics

a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? please show work and explain. i still don't ...
16. ### Physics (Checking answe)

Sorry for re-posting but I need to know if I did it right, please help, I worked out the problem I just want to know if I did it right. A shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 52(angle sign here) downward from the horizontal. Find ...
17. ### Brief 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. Between y = −x and y = −x^3 for x in [−1, 1]
18. ### Math

Can someone check these inequality word problems to see if I did them right? Correct me if I'm wrong! Write a linear inequality using word problems. 1. A sculptor is selling his work at an exhibit to earn at least \$25,600 in revenue. Small pieces go for \$1600 and large pieces ...
19. ### math

The table below shows the temperature in degrees for eight consecutive days as well as the respective number of ice cream cones an ice cream shop sold on each of these days. what is the correlation coefficient of the set of data? tempurature= 68,77,83,85,89,94,96,99 number of ...
20. ### Math

I need someone to please check my answer for me... add. -1.6 + (-2.3)= the answer I got was -3.9 is this correct? if not could you tell me why and how to get the correct answer..? thank you

22. ### Physics

At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) How do I work this problem??

please check my answers. Mrs. Walters drove 160 miles on 5 gallons of gas. How many gallons of gas will she need to travel 256 miles? (ANSWER):160 divided by 5=32 256 divided by 32=8 Stephen read 90 pages in 6 days. If he continues reading at that rate, how long will it take ...
24. ### Geometry

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 ...
25. ### Science :check my answers

Here are some questions I had for hw, I answered some of them, can someone check my answers and help me with the ones i didn't answer, thanks: 1.Which constellations are visible from Canada in all seasons? My Answer:Ursa Major, Ursa Minor, Lynx,Cephus, Cassiopia, ...
26. ### Meicare

Please check my answer thanks :) Hospitals that are excluded from the Medicare PPS (such as children's hospitals) are paid based on 1 reasonable cots 2. fee schedules 3. global payments 4. bundled payments I picked # 1
27. ### Chemistry

Please check to see if i did it right.. if the reduction potential for Cu^2+ + 2e---> Cu is 0.00V. Then the remaining reduction potentials for the voltages between Cu[cathode]/Zn[anode] is like??? Ecell=1.043v My answers:Zn-->Zn2+ 2e- voltage = -1.043V
28. ### Applied Dog Behavior

Please check my answer thanks 8. If the dog doesn't seem to like the sound of the clicker, you can A. hold it up in the air. B. give a better treat. C. click faster. D. put it in your pocket when you click. I picked D
29. ### Algebra check+help?

For problems 1 and 2 write Y as a function of X 1) 12=9x+3y - I think you would subtract 9 from the 12.. but I'm not really sure because you can't add/subtract x's and y's from regular numbers. 2) -2x+3y=9 Same problem as above.. Can someone please explain to me how to do ...
30. ### math

I know youall are very busy an that answering posts takes time, but I am in real need of some one to check my questions to see if they are correct, because I need to post my answers very SOON!! PLEASE HELP!!!! THANKS!!
31. ### Accounting Specialized Journals

Store owner makes a \$80.00 purchase, goods for resale, and uses check \$143. Using Specialized journals, general ledger and subsidiary account, what is the correct posting please.

How doyou ask if a friend if they are hungry? Tienes hambre? If they are thirsty Tienes sed? Both should have upside down question marks before question

1.Write 4+6+8+10 in sigma notation: I came up with sigma in the middle 3 on top j=0 on the bottom 2. Find the 10th term of the sequence -1/5,-1/20,-1/80 this was a geometric sequence so I said a(subscript10) = -1/5*1/4^(10-1) =-1/5*(1/4)^9 = -1/5*1/2621444 = -1/1310702

can you please check this for me: there once was a cat named rainbow, so fat and colorful, she loved to catch mice to eat, on her big fat feet, and she's a cat who likes to tip-toe.

Can you check these, please? Convert each of the following verbal phrases to algebraic expressions. 1.twice the number plus 16 is 18 Ans: 2x + 16 = 18 2.the quotient of a number and ten more than fourteen is eleven Ans: (10 + 14)/x = 11? or x/10 + 14 = 11?

I think its True During the Stone Age, people invented tools such as daggers, spear points, and hand axes, and made them mostly out of stone. A. True B. False
37. ### Math

1. Given the function rule f(x)= x^2 - 3x + 2, what is the output of f(-2)? A. 12 B. 4 C. -8 D. 0 2. Suppose you earn \$10 each hour you babysit. Which function describes the relationship between your total earnings E and the number of hours you babysit, h? A. E(h) = 10h B. E(h...
38. ### science

I had objects that I had to find the source energy then what it was converted to. Please check my answers: battery Powered Drill chemical--> mechanical and thermal Lava Lamp Electrical--> thermal and nuclear
39. ### Math

I don't know if my answer for this question is correct but can you please check? 1.) Between which pair of numbers does the square root of 15 lie? Do without using a calculator. A.) 3.7 and 3.8 B.) 3.8 and 3.9 C.) 3.9 and 4.0 D.) 14 and 16 I think the answer to this might be A...

Please help out. Thank you. A right triangle has one leg on the x-axis. The vertex at the right end of that leg is at the point (3,0). The other vertex touches the graph os y=e^x. the entire triangle is to lie in the first quadrant. Find the maximum area of this triangle....
41. ### physics

Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
42. ### physic

how is the time for which work a machine and it does a work? t=? A=9.3*10^4J P=1.3*10^4W
43. ### Science

What would the application be to my experiment which was "We dig through soil and check for inorganic and organic matter in the soil and look for natural things in the soil(ex; beans,feather,rocks,sticks,and grass)" Please I need your help URGENT! ! !
44. ### math/algebra

Subtract: express your answer in simplest form. 2/5 - y/y-2 answers a)-3y-2/y-2 b) -3y -2/5(4-2) c) -3y-4/5(y-2) d) -3y-4/y-2 The way you have written the problem, is 2/5 minus y^3. I don't think that is what you meant. Please use grouping symbols on fractions () or [] The way...
45. ### algebra I

please check my answer 2/3x-24 less than/equal to 8 = x less than/equal to 12
46. ### Help!

MS. Sue, to the other civics questions can u please check my other questions????

Ok these are some textbook questions i need to turn in soon could you please check and see if they are correct~ 1. x over 4 + 1 = –5 (1 point) –2 16 4 –24 2. 6x + 29 = 5 (1 point) –4 –18 204 –144 3. Combine like terms: –21a + 16a (1 point) –5a 5a 37a –37a ...
48. ### physics

A 2 kg block is pushed 2 m along a fixed horizontal surface by a horizontal force of 20 N. The coefficient of kinetic friction of the surface is µk= 0.40. (a) How much work is done by the 20 N force? (b) what is the work done by the friction force? (c) What is the total work ...
49. ### Trig

I have a diagram of how far a discus was thrown. From A to B is 100m, C is perpendicular to A, from A to C is 50m, A and B are connected to D (it should be a triangle), A has a 40° angle and B has a 75° angle. C is not perpendicular to D btw.. a. Find AD and use it to find ...
50. ### Complex Algaebra, Plz Help!!

Good evening to all around the world. Need help with this question, however i must show my answers supported by the working out. Please help. This question is difficult, the one who solves it for me is my hero!!!! Q11) Two functions f and g are defined by F:x (arrow) 25/(3x-2...

Please help me to correct my English grammar. thank you. June 17, 2014 Dear sir, Good day, I regret when I resigned from your company but it’s my family’s reason. I am now presently working here in Maldives as a professional photographer and salesman as well. I realized ...

can you please help me with this please. thank you. A small mass m hangs at rest from a vertical rope of length l that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle delta and the ...
53. ### dog behavior

please check my answer thanks True or False Modeling is a training technique that involves providing one dog as an example for another dog to follow I think that is True

1. If 31 waves pass by a point in 1.7 s, what's the frequency? my answer: 18.2 Hz 2. if a crest with an amplitude of 7cm interferes with a trough with an amplitude of 10 cm, the resulting wave has an amplitude of: my answer: -3
55. ### PLEASE CHECK OPERATIONS WITH FRACTIONS PART 2

10.5/7-4/6 A.1/21*** B.1 C.1/42 D.1/14 11.-3 7/9 - 1 2/9 A.-2 5/9*** B.2 5/9 C.-5 D.4 5/9 12. 6 1/3 - 4 4/9 A.2 1/3 *** B.2 2/3 C.1 8/9 D.1 2/3 13. Kevin had 3/4 yard of string. He used 1/3 of the string for a school project. How many yards of string did he use for his project...
56. ### Math

Which of the following values best approximates of the length of c in triangle ABC where c = 90(degrees), b = 12, and B = 15(degrees)? c = 3.1058 c = 12.4233 c = 44.7846 c = 46.3644 In triangle ABC, find b, to the nearest degree, given a = 7, b = 10, and C is a right angle. 35...
57. ### Apchemistry

Thank you for your help Why is solid copper (I) nitrate a poor conductor? I know that CuNO3 is an ionic solid, so maybe (please check me on this) the electrons in CuNO3 are exchanged in the formation of electrostatic attractions found within ionic solids, so the electrons ...
58. ### pre-calc

Can someone check my work please? Convert each polar equation to a rectangular equation. Then determine the graph's slope and y-intercept. ( I'm going to type 'x' instead of theta ) r sin(x- pi/4)=2 r(sin(x- pi/4))=2 r(sinx*cos pi/4 - sin pi/4*cosx)=2 r(sqrt2/2*sin x - sqrt2/2...
59. ### math

24 men can do a work in x days and 32 women can do the same work in (x+8)days.the ratio of work done by 15 men and 12 women in the same time is 3:1,find value of x? ( ans 10) ?
60. ### Physics

A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part A How much work does gravity do on the box? ...

Please check to see if my answers are correct. Complete each sentence by choosing the correct answer from the list of terms below. You will not use all of the terms. *normal good *complements *income effect *demand curve *ineleastic *inferior good *law of demand *unitary ...
62. ### Trigo!

Ok, i've tried this sum a million times and i cant get an answer. Somebody please check my workings and tell me what i did wrong! Thanks! Given 4≤y≤6, find the value of y for which 2cos((2y)/3) + √3 = 0 Here's my workings: 2.666≤(2y/3)≤4 2cos(2y/3...

I will appreciate it if anyone can help me with the following: 1. The optimal height h of the letters of a message printed on pavement is given by the formula . Here, h= (0.00252d^(9/4))/e d is the distance of the driver from the letters and e is the height of the driver’s ...
64. ### LAL! check my work

check if my sentences is correct part.= participle phrase ger.= gerund phrase inf.= infinitive phrase or none and the phrases are capitalized . are they correct 1. the news showed pictures of houses destroyed by the hurricane. NONE 2. would you ever want TO GO ON A 2-WEEK TRIP...
65. ### Spanish Check

Hello! Could someone please check these for me? Thanks a bunch! :) Directions: Rewrite the following English sentences in correct Spanish form. The verb you will just is limpiar. 1.) I will have cleaned the house. 2.) Jessica and Sara are sad that I didn’t clean the house. 3...
66. ### Algebra

Hi, could someone possibly check my answers to these algebra questions? Its not my strong point so have been struggling a little (or alot if they are all wrong!) 3m-8-5m+10 = 2-2m 4(2-6x) = 8-24x 7(a+3)-5 = 7a + 16 2x-3(4y-x) = 2x-12y-9x 2(4y-1)+5y(3-2y) = 2(4y-1) +5y(3-2y) If...
67. ### Finite Math - Simplex Method

I think I have a good understanding of how to set up the problems but and solve them but I am not constant yet with getting the correct answer. Is there a way to check the answer? I am doing an online math class and it would be nice if I could check before I commit. Thanks

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. (Round your answer to four decimal places.) Enclosed by y = ln x, y = 2 − ln x, and x = 4
69. ### Brief 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. (Round your answer to four significant digits.) Enclosed by y = e^x, y = 2x + 1, x = −2...
70. ### Math

Could someone please check my work on these word problems? My solutions just don't seem right, could you please let me know where I may have messed up. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on ...
71. ### English

Can you please check these sentences on phrasal verbs, please? Thank you very much in advance. (I don't know if their use is correct). 1) The plane will lift off at 9.00 o'clock. 2) They will head off at six a.m. tomorrow. 3) He cleared off without saying goodbye. 4) He ...
72. ### English

Could you please check these two sentences, please? 1) Dorian wishes he would stay young forever whereas the portrait would grow old in his place. 2) According to Wordsworth, man and nature are (were) two different but inseparable parts of the same universe, a total scheme ...
73. ### Art

Could you please check these examples and tell me if the sentences in brakets are possible? Thank you , Writeacher 1)Her boss is going to ask her out for dinner next Saturday. 2) The line is engaged. Would you like to hold? (Not: would you hold?) 3.Our coach told us that the ...
74. ### maths

for this quadratic equation: y2-4y-16 = 0 which two options are correct solutions, rounded to three decimal places? 1) -4.483 2) -3.243 3)-2.472 4) -1.472 5) -0.536 6) 5.243 7) 6.472 8) 12.443 You have to use the quadratic equation, we will be happy to check your work. the ...
75. ### Chemistry(check my work)?

An equilibrium mixture of the following reaction was found to have [COF2] = 0.255 M and [CF4] = 0.118 M at 1000°C. What is the concentration of CO2? 2 COF2(g) ---> CO2(g) + CF4(g) Keq = 2.00 at 1000°C I know I need to put the numbers in the equation so this is what i did...
76. ### Honors English 11

Can someone check my answer please? Q: Read and analyze "When I heard the learn'd Astronomer" by Walt Whitman. What romantic ideas does it express, and how does the structure of the poem reinforce the meaning? -When i heard the learn'd astronomer; When the proofs, the figures...
77. ### time and stress management

To limit your telephone time at work,you can? A)ignore the messages-people with important messages will call back B)have a coworker answer the phone C)limit the coversation to work-related issues D)unplug the phone my answer is c can someone please help once you have ...
78. ### science(2 Qs)

PLEASE ANSWER MY 2 QUESTIONS IN SCIENCE THANKS 3.when a negatively charged object moves in the opposite direction of an electric force field,the potential energy of the object. A.becomes zero(I PICK THIS) B.increases C.decreases D.stays the same 4.the two south pole ends of ...
79. ### English

Thank you very much. Here is the second list of verbs I'd like you to check.I'd also need to rephrase each sentence using a verb which is not phrasal. Can you please help me? 1) A long strike threatened to bring down the Government 2) I’m sure this tablet will bring the ...
80. ### Calculus

We are doing limits in Calculus, but now we are doing trig limits too and i do not get how to do any of them. For example ones like this, how do you do them? sec (x-1) / (x sec x) x approaches 0 ((3 sin (x)) 1 - cos(x)) / (x^2) x approaches 0 (sin (2x)) / (sin (3x)) x ...
81. ### language arts

I cant find the ourspace website, I need for this evenings home work I have search several search engines...Any suggestions please
82. ### Math

Find three consecutive integers such that 5 times the first and third is 14 greater than 8 times the second. Please show all work.
83. ### math

Factor the expression on the lift side of each equation. Then solce the equation: 8xcubed-27=0... also please show work so I understand how you got the answer.
84. ### Precalculus

Suppose that a polynomial function of degree 4 with rational coefficients has i and (-3 + square root of 3)as zeros find the other zeros show work please

home work paper says: On the back:cut out a letter. make a motion pattern on the back. I am clueless please help.
86. ### Chemistry

Express the rate of the reaction 2C2H6 + 7O2 -> 4CO2 + 6H2O in terms of: a. Delta [C2H6] b. Delta [CO2] Show work please
87. ### physics

Zircon is sometimes used to make fake diamonds. What is its index of refraction if the speed of light in zircon is 1.6 x 10^8 m/s. Please show all work Thank you.
88. ### math

There are 6 boys and 8 girls in a group of students. Calculate the number of ways that a president, vice-president and treasurer can be selected. Please show your work.
89. ### pre-algebra

Find the slope of the line containing the given pairs of points. If the line is undefined, state so. Please show all of your work. (-5, -2) and (-7, -2)
90. ### More MATH 

Here's some other stuff we never learned in class: 7e-2=47 e=_____ 1/3g=8 g=_____ 5b+1=46 b=______ I don't know how to work them! Please explain as well.
91. ### Stats

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Errors Frequency 51-53 9 54-56 19 57-59 16 60-62 24 63-65 25
92. ### algebra

Find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work. (1, 2) and (9, 12)
93. ### College Algebra

Verify that the function f and g, are inverses of each other by showing that f(g(x))=x and g(f(x))=x. Graph both the functions on the same graph. Please show all of your work. f(x)=-7/x-4 g(x)=4x-7/x
94. ### physics

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help power= work/time= 1/2 m v^2/8 1/2(1500k)(30)^2 2/8 =168750 is this correct?
95. ### physics

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help power= work/time= 1/2 m v^2/8 1/2(1500k)(30)^2 2/8 =168750 is this correct?
96. ### Pre-Calc Help

Evaluate the expression under the given conditions. (show work please) sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.
97. ### pre-calc helpppp

Find sin x/2, cos x/2, and tan x/2 from the given information. (show work please) thank you!!! cos x = − 4/5, 180° < x < 270°
98. ### Pre-Calculus

Evaluate the expression under the given conditions.? show work please! sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.
99. ### Statics

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 61-63 19 64-66 17 67-69 5 70-72 10 73-75 12
100. ### Physic

You walk 55 m to the north, then turn 60° to your right and walk another 46 m. How far are you from where you originally started? Can someone help me with this question please? I have tried Pythagorean but it did not work. thank