Trig check my work please?
90,377 results, page 98

Physics
Which motor performs more work in the same amount of time a 10 kW or a 20 kW motor? Explain your reasoning. Power masures work per unit time and kW is a way of measuring it. That should make the correct answer obvious. 
calculus (gr 12)
the productivity of a person at work (on a scale of 010) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10... 
algebra
a survey of 2,000 people was given to find their mode of transportation to work each day. the pie chart gives the results of people surveyed Bike 3.8% taxi 9.8% walk 3.4% bus 14.6% drive 68.4% how many traveled by bike to work? 
PHYSICS work on a ramp!!!
How much work is it to push a box (mass 190 kg) up an incline (angle 16 degrees with the horizontal) that is 8.3 meters long, if the coefficient of kinetic friction between the box and the incline is 0.6? My doubt is how do I find force? 
English
Assignment: Type impressions, feelings, and thoughts in a onepage 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... 
math order from least to greatest
can you check my work i need order least to greatest 6 problems. 1) 0.2222 1/5 0.02 i got: 0.2 0.2222 0.02 2) 1.1111 1 1/10 1.101 i got: 1.1 1.101 1.1111 3) 6/5 1 5/6 1.3333 i got: 1.2 1.3333 1.83333 4) 4.333 9/2 43/7 i got: 4.3333 4 3/7 9/2 5) 0.1333 2/75 1.3 i got: 0.1333 0.... 
trig
It's in sigma notation, so I'm not sure how to type it. I'll just use E lol. Find each sum. 6 E (n+1)/(n+2) n=1 Is this a geometric or arithmetic series? That is pretty much all I really need to know. I appreciate all the help you guys give. 
trig
Two sides of triangle CDE are 9 and 4, as shown. Write an equation in standard form for the line CD. Leave values as radicals. There is a picture of a triangle that passes through point (4,0) The answer is 65^1/2x + 4y = 4(65^1/2) But, I don't understand how to do this problem. 
trig
Hi I need to solve this question for x, where 0<x<2pi. The question is 2cos^2 x + cos x =1. Then it asks me to wrtie a general solution for it. I really don't understand how to do any of this. I just started this unit and I'm finding it so difficult. Any help would be so... 
Trig
How do I prove the following Identity? sec x(sec xcos x)=tan^2x If there is a certain website or suggestion to help with these type of equations I would greatly appreciate it. I've been studying these for a while but still get pretty confused. 
trig
Alan is using the equation mg sin A = umg cos A to determine the coefficient of friction, u, between a flat rock and a metal ramp. Find u to the nearest hundredth, if the rock begins to slide at 19º. 
Maths Trig
A 60m long bridge has an opening in the middle and both sides open up to let boats pass underneath. The two parts of the bridge floor rise up to a height of 18 m. Through what angle do they move? 
logic
What would be the standard form of the following sentence? "The only road to success is hard work" First I had "All roads to success are hard work." Now I'm thinking that that's wrong because "roads" is plural and I'm talking about "THE road." So now I'm thinking: "All things ... 
English
Thank you very much, Writeacher. Can you check these descriptions of pictures I need to prepare for tomorrow, too. 1) Some workers are at a selfservice restaurant (I think it is a sort of canteen in their own firm) and they are choosing their meals from a counter (what is ... 
math show work please
1/(X+3)+4/(x+5)= 2/(x^2+8x+15) a. the solution set is b. the solution set is all real numbers c. the solution set is empty 
Grammar and Composition
please check my answers: match each of the words in the first column with an antonym in the second column. 1. gruff _f?_ 2. semblance _a_ 3. relentless _h?_ 4. prelude _j_ 5. liability _b?_ 6. barbarous _d_ 7. inadequate _c_ 8. dadlock _e_ 9. brazen _g_ 10. arduous _i_ a. ... 
English
I can't find any synonyms for the words I need to rephrase. Can you check them, please? 1) He thought there should be seapolice upon the HaerwichHolland ranges since that sea stretch was constantly overrun by pirates 2) He was expert in dabbling in exchanges He was such a ... 
Astronomy
Which of the following distance measuring techniques works to measure distances to other galaxies beyond the Milky Way? CHECK ALL THAT APPLY A) Hubble's Law B) main sequence stars C) Cepheid variable stars D) parallax E) radar ranging F) galaxy rotation G) white dwarf ... 
English
Could you please check these sentences, too? Thank you very much. 1) The witches were associated with the devil. 2) Once you told me I could use this sentence. The daffodils are described not statically as in a painting but alive with motion. 3) He shows the daffodils as part ... 
Grammar
Please check. 3. Our apartment is downtown; theirs is uptown. 4. "Then," the witness continued, "we heard someone yell" 'Who's in there?' 5. Could you find the article "Gulliver's Travels Revisited" in our library? 6. Sheila asked, "Is Chapter 3 of Winter Tales called 'Up the ... 
chemistry
how do i calculate %of arsenic and oygen by mass and chem composition of the oxide that has been formed 0.702 sample of arsenicheated, material in boat, oxide of arsenic with mass of 0.927g please help %As = [(mass As)/mass oxide]x100=?? %O = [(mass O)/mass oxide]x100=?? From ... 
Chemistry DrBob222
Please check. Oxygen (O2) is about 20% of our air, with about 80% nitrogen and a bunch of minor components. In Colorado Springs, where I grew up, the elevation is ~ 6500 feet and atmospheric pressure is only around 9 psi (vs. 14.7 psi at sea level). Under those conditions and ... 
physics
A worker in a warehouse uses a rope passing through some pulleys to lift a heavy crate. The worker exerts a force five times less than the weight of the crate but has to move the rope four times as far as the crate moves. This situation... A) can happen because the extra ... 
Art
Discuss a minimum of two reasons why Jackson Pollock's Convergence (p. 510, Figure 734), is a work of "fine art" as opposed to an arbitrary composition of paint. Imagine that you are a defense attorney for this work of art. Establish a very strong "argument" for this artwork ... 
English
Can you check these sentences,please? 1) It was too bad you couldn't go skiing with your boyfriend 2)I decorated the Christmas tree with lights, angels, bells, snowmen, ribbon, stars and baubles. 3) Antony succeeds in stirring the crowd against Brutus 4 I reiceved a golf club ... 
English
Yes, you are right. Thank you very much for giving me advice, too! By the way, I need to include this sentence in an email. Could you please check it? 1) As promised, I'm sending you both the email address and the password of my first class so that your students can get in ... 
Physics
A mass m1 = 3.3 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.4 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.87 m. 1) How much work is done by gravity on the ... 
English
1. Thanks to his father, he succeded in his business. Instead of 'thanks to' can we use 'because of' or 'owing to'? Are they the same in meaning? Does 'thanks to' have a positive connotation? 2. He retired from the work. 3. He retired from the workplace. 4. He retired from his... 
Physics please help?????
(a) At a certain instant, a particlelike object is acted on by a force F=(2.9N)i(1.7N)j+(5.7N)k while the object's velocity is v= (3.2m/s)i+(4.5m/s)k. What is the instantaneous rate at which the force does work on the object? (b) At some other time, the velocity consists of... 
English
Mom, I'm going to the stationery store. I'll buy some ballpoint pens, fountain pens, and mechanical pencils. I'll buy some notebooks and workbooks, too. I'll come back around 7:00 p.m. Don (Is this passage corect?) 1. I'll be back around 7:00 p.m. 2. I'll come back around 7:... 
English
Could you please check these last few sentences, please? Thank you in advance 1) What did you like most among the various topics we dealt with during your school year? 2) Are you going to continue your study of English at university? 3) Are you going to continue your studies (... 
Chemistry
Could someone please check my Chemistry homework? The molecular formula for cisplatin, a chemotherapy agent, is PtCl2(NH3)2 (The numbers are all supposed to be subscripts) 1. What is the molar mass of cisplatin? Ans: 300.06 g/mol 2. How many moles of hydrogen atoms are in one ... 
us history
what factor caused the anger that led to the Boston massacre? a) Boston was occupied by the British soldiers. b) the colonists did not like the system of British taxes********* c) some american colonist disagreed with he kings policies.******** d) the British thought some ... 
HELP ME!!
What qualities of an oral presentation are most important to you as an audience member? Explain your answer (Broken Link Removed) http://www.tau.ac.il/~smiriam/mugbar/criteria2.htm http://www.ncsu.edu/midlink/rub.pres.html Please note that we don't do students' homework for ... 
college physics
A block of mass 2.50 kg is pushed 2.40 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal. (a) Determine the work done by the applied force. J (b) Determine the work done by the normal force exerted by the table. J (c) ... 
Inclass presentation URGENT history
Hi Look, I'm stuck. I've been trying to get an idea all week. The last thing that I want to do is use a powerpoint as my visual aid. In fact i've removed it from even being considered. At one point I thought about doing a video confrence or asking peopleonthestreet what ... 
Math
Okay i stuck on a problem can anyone help? There are 14 people total.7 are girls a day.Everyone has to work for 7 days also everyone has to have 2 days off.So how many days does a girl work a week? 
science
a womans lifts a 300 newton child a distance of 1.5 meters and carries her forward for 6.5meters. how much work does the woman do in lifting the child? b.how much work does the child do? 
physics
a particle is subject to a force fx that varies with a position shown in figure P 7.15.find the work done by the force on the particle as it moves (a)from x=0 to x=5.00,(b)from 5.00m to 10.0 m,(c)from x=10.0 to x=15.0 m.(d) what is the total work done by the force over the ... 
physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and α = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is μk = 0.40. The mass m2 is moving up at a constant speed. (a) What is the magnitude ... 
physics
1. A 100N block lies on a frictional surface. A force of 50N was applied horizontally where the block had moved 5 m from the positive direction. Find the work done by the applied force and the work done by the weight of the block. 2. Using Example 1, if the applied force is ... 
Algebra
Megan factored the expression 12x^2 +52x35as (2x+5)(6x7). But when Jacob applied the FOIL principle and multiplied out (2x+5)(6x7), he got 12x^2+44x35; thus, Meganâ€™s solution does not appear to check. Why is that? Please help Megan to understand this better. ... 
Intermediate Algebra
Rewrite with positive exponents assume that even roots are nonegative and that all demonintors are nonzero. (6xy) 3  4 The parenthesis is supoose to be around the line as well as the four. I just don't know how to make my computer do that. This is what I get. Can some ... 
Social studies
Which statement best describes the importance of magna carta? A. british judges should hold power B. even the king must respect certain rights of the people C. federalism is the best form of government D. parliament should have the power to determine tax rates. My best answer ... 
Physics
A force of 3.00 N acts through a distance of 12 m in the direction of the force.Find the work done. If I recall correctly, work=force*distance. The units should be newtonmeters. 3*12=36 
Math
Jessica can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work? 
Math
Jessica can jog to work in 4/5 of an hour. When she rides her bike, it takes her 3/10 of an hour. If she rides 10 miles per hour faster than she jogs, how far away is her work? 
math
so i got a math work sheet and i cannot figure out the math puzzle and to get the answer you have to do the work but i need help. Does anyone know what the answer to what did the spanish farmer say to his chicken is? 
Algebra
A dog trainer has 64 ft of fencing that will be used to create a rectangular work area for dogs. If the trainer wants to enclose an area of 192 ft2, what will be the dimensions of the work area? 
Physical science
A 11kg box is dragged across a frictionless surface by a force F=55N. the box travels 4.0ft. what is the work done by the applied force F and the work done by the normal force? 
value
An Effort Of 250N Raises A Load Of 1000N Through 5m In A Pulley System.If The Effort Moves 30m,what Is; (a)the Work Done In Raising The Load (b)the Work Done By The Effort (c)the Efficiency 
english answer check please, 4 questions
1. To plan your time for a research project, it is best to (1 point) divide the time spent on each step evenly. keep your deadlines flexible. start at the beginning and plan from there.***** work backward. 2. Which of the following is not a guideline for choosing a research ... 
READ THIS!
Please answer my question that I posted at 6:10 quickly because I have to in a little while!!! Your answer is posted. However, you're still going to have to do the math to find the equivalencies. If you'd like to post your answers, we'll be glad to check them. We do not do ... 
Health /Law
please check my answer thanks :) Sally who is a minor is being operated by Dr Bob who dicovers a life threatening tumor and the pt could die with in hours this tumor was previously unknown her parents are in the waiting room Dr Bob should 1. remove the tumor 2. ask her parents... 
U.S. History
please check this The War of 1812 end with a. a clear victory for the United State b. a clear victory for Britain c. the removal of all British claims to land in North America d. a return to the prewar boundaries between United States and British territories i picked B 
Business Finance
Sullivan's Handbags marks up their bags at 45% of the selling price. Pat Sullivan saw a bag at a trade show that would sell for her customers for $85. What is the most she would pay for the bag and still retain the 45% markup of the selling price? I came up with 84.99 please ... 
Chemsitry
Check my work? What is the approximate pH of a 0.05 M solution of HSCN that has a Ka of 104? HSCN > H+ + SCN  The equation for calculating pH is pH = log [H+] Now we need to find H+ and solve. [HSCN] = 0.05 M the molarity Ka = [H+][SCN]/[HSCN... 
PHYSICS
(1 pt) An aricraft carrier has a mass of 8.9 x10^7kg and can cruise at 55 km/h. a) What is the work required to stop it? J b) What constant force could stop it in 6 km? N a) If only half of the work required to stop it is done, what is its final speed? km/h 
algebra
Nicole can jog to work in of an hour. When she rides her bike, it takes her of an hour. If she rides miles per hour faster than she jogs, how far away is her work? NEED HELP FAST 
science
a river does 6500J of work on a water wheel every second.The wheels efficiency is 12 percent.A)How much work in joules can the axle of the wheel do in a second? B)What is the power output of the wheel? 
Health insurance
please check my answer thanks If both nondivorced of a dependent child have insurancce that will cover that child , which policy is considered to be the primary carrier for the child ? A the mother's insurance B the father's insurance C The coverage that has been in effect ... 
Physics, Thinking check please
A 9v circuit charges a capacitor to steady state. Then the switch is opened. All resistance units in kiloohms: 2 rsistors, 20 and 40kO in parallel with a single 20 kO resistor. Total R is 3.33x10^4 Ohms. Am I close? If so, and the time constant is 1.6x10^3 seconds, then is ... 
English
Could you check these sentences, please. 1) I went to Ferrero factory in my boss's car, since I had an appointment with the responsible of the technical office. 2) Before leaving home, I had to wait for my husband to take a shower. How long does it usually take you to have a ... 
geography
1. What is the name of the bay that is connected to the Atlantic Ocean by the Hudson Strait? The Hudson Bay 2.What is the body of water that separates Iran from Saudi Arabia? The Persian Gulf 3. Which of the following cities is farthest north: Nebraska, Iowa, South Dakota, ... 
Physics
Would someone please show me a way to work this out A ball is dropped from the top of a building 150 m high. (Ignore air resistance) A. How long does it take the ball to hit the ground? B. What is the speed of the ball when it hits the ground? 
physics
i need help i don't understand how to do this problem so please help me. A student lifts a 5kg chair 0.8m off the floor, walks at a constant speed for a distance 10m, and then puts the chair back down on the floor. calculate the total amount of work done on the chair. 
Physics
A cheetah running at 30 m/s is pursuing a zebra going in a straight line at 14 m/s. If the zebra has a 35 m head start, how much time does it take for the zebra to catch up? (Please show all work. I know the answer, but I need the step by step instruction to understand.) 
Calculus 3
A ball is thrown at an angle of 45 degrees to the ground. If the ball lands 90m away, what is the initial speed of the ball? I know you use x(t)=(v*cos(alpha))t and y(t)=(v*sin(alpha))tg/2t^2 but I'm still really confused about what to do. Please show all work. Thank you. 
algebra 2
to determine the number of deer in a game preserve a conservationist catches 330 deer tags them and lets them loose later 672 deers are cought 168 of them are tagged how many deer are in the preserve I don't now how to get the answer can someone work this for me please. Thank you 
PHYSICS
An applied force accelerates a 50kg crate along a frictionless floor from rest to 5 m/s.The work performed by this force is most nearly 125 J 250 J(x) 500 J 625 J 1,250 J Can someone please explain this to me and help? I thought it was 250 J but my calculation was wrong. 
History
3.)A slave's life was full of hardships and difficulties. Workdays were long and exhausting, full of backbreaking labor, and slaves would work 10 to 16 hours a day. Masters could hire out their slaves to work for other masters; however, the slaves were not compensated for this... 
Algebra
Write the equation of the line satisfiying the givrn geometric conditions. L has yintercept (0, 2) and is perpendicular to the line with equation 2x3y=6 Here is my answer please check. 2/3x2 I can see it is wrong just by looking at the slope. The perpendicular line has a ... 
AlgebraFunctions
Could you please check my answers and help me with two problems? Determine which two functions are invereses of each other. 1. f(x)=5x, g(x)x/5, h(x)5/x I got that f(x) and g(x) are invereses of each other 2. f(x)=x2/(2), g(x)=2x2, h(x)=x+2/(2) I got that f(x) and h(x) are... 
U.S.History
please check The Emancipation Proclamation freed a. all enslaved people living in the U.S b. enslaved people living in areas controlled by the Confederacy c. enclaved people living in the Union states. d. enslaved people living in the territories i chose B 
English
A: Would you like to anything to drink? B: Diet cola, please. A: How many would you like? B: Three paper cups of diet cola. A: Here you go. B: Thank you. (Is the short dialogue grammatical? Would yoiu check the errors in the dialogue?) 
8th grade Math
Can you please check my answers? Wally ordered a pizza. He ordered 4/9 of the pizza with sausage, 1/5 of the pizza with extra cheese, and the rest of the pizza with bell peppers. How much of the pizza had bell peppers on it? My answer: 29/45 of a pizza 
Math help
Can you please check these problems? 1. 4ã2+6ã72ã32=_____ I got 2 2. 5ã28+2ã7ã14=_____ I got 12ã7ã14 3. 3ã72+6ã527ã128=______ I got 89ã8+12ã1356ã2 4. 4ã112+5ã569ã126=____ I got 17ã14+16ã7 
Math
In one school, 5/6 of the sixth graders take a foreign language. Of these students 2/5 take French. What fraction of the sixth graders take French. Answer: 5/6 x 2/5=25/30 + 12/30=37/30=1 7/30 Can you please double check my answer to see if I got it right. 
physics
A batter hits a fly ball which leaves the bat 0.90 m above the ground at an angle of 61° with an initial speed of 29 m/s heading toward centerfield. Ignore air resistance. (a) How far from home plate would the ball land if not caught? (b) The ball is caught by the ... 
Spanish
Please check this Cuáles son algunos comidas típicos de Mexico? Algunos comidas típicos de Mexico son tacos, y enchiladas y frijoles. 
maths
1) If I number the pages os a 36 page book, how many digits do I write? My answers is 63, not sure if this is the correct answer? 2) How many pages does a book have if in numbering them I use: a) 129 digits? A= 69 pages? b) 203 digits? A= 104 pages? Could you please check my ... 
English check please
1. In the poems in this collection, who faces life with the most hopefulness and selfconfidence? the speaker in “Life Doesn’t Frighten Me”********THIS ONE the speaker in “A Dream Within a Dream” the Oysters in “The Walrus and the Carpenter” the Walrus in “The ... 
Calc I (@Reiny)
y = x^3  8x^2 + 6x 2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^216x+6 3x^216x+6=6 3x^216x=0 x(3x16)=0 Solve for x's x=0 3x16=0 ~> x=16/3 Plug x values to ... 
Calc I (@Reiny)
y = x^3  8x^2 + 6x 2 has a slope of 6 at two points, what are the coordinates? I used Reiny's way to help solve this answer. Please check if I've done it correct: y'= 3x^216x+6 3x^216x+6=6 3x^216x=0 x(3x16)=0 Solve for x's x=0 3x16=0 ~> x=16/3 Plug x values to ... 
Physics
An airline pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25.0 N for 10.0 meters. The handle she pulls on makes an angle of 42.5 degrees with the horizontal. How much work does she do over the tenmeter distance? Tried doing: (Cos(42.5) * 25N) * ... 
English,maths,physics,chemistry
Topic:machine,a block and tackle of 6 pulleys is used to raise a load of 300N steadily through a height of 30m.if the work done against friction is 2000J. calculate:the work done by effort,the efficiency of the system,the applied effort. 
Nedd Help Please  PreCalc
The coordinates of the five quarter points for y=sin(x) are given below. Use these quarter points to determine the ycoordinates of the quarter points of y=2sin(1/4x). (0,0) (π/2,1) (π,0) (3π/2,−1) (2π,0) (Type ordered pairs. Type exact ... 
math
it took 12 gallons of gas to fill the family car this is 5/6 the amount that the tank can hold how much gas can the tank hold? A.10 Gallons B.14 2/5 Gallons C.12 5/6 Gallons D.13 5/6 GallonsMy Answer Please check thanks:) 
math
Daniel needs to purchase 5.6 meters of tape for a project. If each roll of tape contains 80cm andcosts $2.50, what is the total cost of the tape Daniel must buy? x=cost of tape meters of tape/cost 5.6/x=.8/2.5 x=17.5 I have the cost is $17.50 Is this correct? They want us to ... 
anatomy physiology/check please
Muscular dysgenesis or dysgeny is a lethal, recessive, genetic disease of mice that is caused by a mutation in the mdg gene. Skeletal muscles from dysgenic mice are paralyzed and the animals die shortly after birth. You are a research scientist interested in the finding the ... 
trig
find the exact solutions (è in degrees) sin^2è+2cosè=2 change the sin^2 to 1cos^2, then rearrage the equation into quadratic form, use the quadratic equaion. 
math(trig)
i need to figure out how to write the formula for the following question In a right triangle a = 30 yds and t5an A = 2. Find b and c. I have the answers but do not know how to write the formula. Can you help me ? 
college Trig
Solve this equation on the interval 0 θ < 2π. Round your answer(s) to two decimal places. 2 sin θ + 3 = 2 (smaller value) (larger value) 
trig
whats the horizontal distance traveled by a model rocket launched with an intitial speed of 120 feet per second when the rocket is launched at an angle of 60 degrees 
Trig/Precal
An airplane flies on a compass heading of 90° at 310 mph. The wind affecting the plane is blowing from 332° at 40 mph. What is the true course and ground speed of the airplane? 
trig
This identity means that translating a basic sine graph 3π/2 units to the right produces a basic cosine graph. True or False? sin(X(3(pi)/2)) = cosX 
trig
From a tower 57 ft high two objects in a straight line from it are sighted at angles of depression of 27degrees and 40degrees5' respectively. Find the distance between the two objects. 
Trig right triangle
A ship leaves port at 6 am and heads due east at 20 knots. At 10 am, to avoid a storm the ship changes course to N 47°. Find the ships distance from port at 4 pm. 
Trig
Two rays with common endpoint O form a 30 degree angle. Point A lies on one ray, point B on the other ray, and AB=1. What is the maximum possible length of OB? 
mATH
1. Compare using <,>, or =. 15 and 21 A < (MY ANSWER) B > C. = 2. Which nuumber is greater than 24? A 42 B27 C 16 (MY ANSWER) D 30 3. Which set of integers is ordered from greatest to least. A 13, 4, 0, 8 B 5, 2, 3, 1 C 12, 8, 4, 7 (MY ANSWER) D 4,6,7...