Trig check my work please?
90,377 results, page 89

trig
a. A sector that has been cut out of circular plastic sheet which has a circumference of 12.31 m. If the central angle of the sector is 1/4 of a revolution, find the area of the sector. 
Trigonometry
How do you solve this trig identity? Using @ as theta: Sin@1/sin@+1 = cos@/(sin@+1)^2 I've tried it multiple times but I can't seem to arrive at the answer. 
trig
i nead to find to the nearest degree all values of theta in the interval 0 x 360 that satisfy the equation 3 cos 2 theta+ sin theta1=0 
French
I would like to double check my work on a few questions: 1. Nous voulions sortir mais ________ la neige tomber, nous avons décidé de rester chez nous. Answer: voyant 2. J'attends ________ de ma meilleure amie. Nous allons au concert ce soir. un coup de téléphone  une soir... 
Language Arts
Which of the following situations in "The Censors" represents an example of situational irony? A) Juan ends up being executed after censoring his own love letter to Mariana. B) Juan decides to report a colleague for trying to organize against the organization they work for. C... 
military , math
the emergency water storage capability your squad set up now holds 7,000 cubic feet of water. YOur commander has asked to fill it up. You estimate that a facility will hold 8,478 cubic feet. HOw many gallons are required to fill the facility? 11,055 74,470 63,415 52,360 I will... 
Thank Jiskha tutors
I really appreciate all that you tutors do for us, I know we may be a bit demanding sometimes XD but we really love how you guys are always there to help us out. Coming from experience, I've had some past teachers that aren't as willing to help us when we do not understand and... 
Language Arts (Check my work please?)
2. An example of literal description in the poem is (1 point) a) the sun brightening valleys. b) an audience being moved by a speech. c) the words of the president being relevant for a long time. *** 3. What makes this poem an analogy? (1 point) a) It uses comparison to ... 
Computer Question
This is not a homework question, but does anyone know how I could fix this: my cousin has Norton Internet Security and she has over 200 days of subscription remaining. But the thing is that none of the scans work. Also whenever she clicks Norton Internet Security these boxes ... 
chemistry
A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constanttemperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ... 
Chemistry
A quantity of 0.020 mole of a gas initially at 0.050 L and 20 degrees Celsius undergoes a constanttemperature expansion until its volume is 0.59 L. Calculate the work done (in joules) by the the gas if it expands (b) pressure of 0.20 atm. (C) If gas in (b) is allowed to ... 
U.S.History
please check What message did the Protestant revivalists preach in the early 1800s? a. God places individuals in predetermined and rigid social ranks b. The power of individuals is equal to the power of God c. People are capable of shaping their own destinies d. Society should... 
geography
Will you please check my answers? 1. What continents are located on a single land mass? Antarctica and Australia 2. In what direction would you be going if you were to fly from South Dakota to North Carolina? Southeast 3. In what part of the United States is Washington DC ... 
chemistry (Pls Bob check for me)
0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the percentage of free so3 in the sample My calculation h2s04 = 98g/mol s03 = 80g/mol 98/2 = 49 80/2 = 40 26.7ml x 0.4n = 10.68ml  0.01067L x/49 + x/40 (0.5... 
Chem Check Please!!!
Using standard thermodynamic data from Appendix L of your text, calculate the equilibrium constant at 298 K for the following chemical reaction: CO(g) + H2O(l) CO2(g) + H2(g). Answer: CO(g) + H2O(l) CO2(g) + H2(g) G = (394.359 + 0) (137.168 237.15) = 20.04 kJ/mol G = ... 
Introduction to Graphic Design
Hello! Thanks for checking my question out! ____ 4. What are the two broad categories of painting styles? Select all that apply. (2 points) a) abstract b) acrylic c) realistic d) realistic e) watercolor Yes, there are two answers with the same choice. My Answers: A and C Could... 
PreCalculus
How do you work this problem. I cannot find an example in the book to illustrate how to work it. Find the value of tan(ab) if cos a=3/5, sin b=5/13, 90<a<180, and 90<b<180 Thanks for any help 
English
Define Socialism. George Orwell doesnt think Socialism can work. WHY? How does he prove that it doesnt work by the way Animal farm ends? 
Math
It took Markus half an hour to drive home from work.He averaged 34 miles per hour. How far does Markus live from work? 
Math
Mr Connors drives his car 11 miles each day to and from work. Is this distance mr Connors drives commuting to work proportional to the number of days he works ? How do you know? 
Math
At the Highland Hotel 578 of the 850 employees work directly with the guess. What percent of employees work directly with the guests? How do I figure it out? 
algebra
Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?; c=20 Answer is b= 5√7 2)a=9; b=12; c=? Answer is c= 15 **How do I show my work to come up with each of these two answers? THANK YOU!! 
math
Mr Ahmad starts work at 11.40 on Tuesday.He works for 12h45min.When does Mr Ahmad finish his work?Express your answer usering the 24hour clock Math 
English
Thank you Ms. Sue for your invauable help! Here is the second part of the letter I need to hand in by tomorrow. As writeacher is not there, could you please help me check it? Many thanks in advance. This twoyear project will be mainly about a comparative study on biodiversity... 
Algebra
Write the equation of the line L satisfying the given geometric conditions. L has yintercept (0,2) and is perpendicular to the line with equation 2x3y=6 Show work I will be happy to critique your work on this. 3x+2y=4? 
Math
A river does 6,500 J of work on a water wheel every second. The wheel's efficiency is 12%. a. How much work in joules can the axle of the wheel do? b. What is the power output of the wheel in 1 s? 
physics
Consider the following figure. (a) Determine the work done on a fluid that expands from i to f as indicated in the figure. J (b) How much work is done on the fluid if it is compressed from f to i along the same path? J 
math
A man,a woman and a boy can complete a piece of work in 20,30 and 60 days respectively.How many boys should join 2 men and 8 women to complete the work in 2 days? 
physics
You use an inclined plane to move furniture into a truck. You perform 224 kJ of work, but only do 91 kJ of useful work. What is the efficiency of the inclined plane? 
Math
How do you go about solving this? If you got paid $15 for 3 hours of work one day and $45 for 8 hours of work on another day, find your hourly rate of pay for the 2 days 
physics
A net force of 1000 N is needed to accelerate a small 1200 kg car from 5 m/s to 8 m/s. Use the workenergy theorem to determine the net work done by the force. 
math
a) from a to of 12 flatres, 4 are selected at random. if the lot contains 4 defective flares (flares that wilt fire), what is the probability that all 4 will not work? B) what is the probability that at most 2 will not work? 
math
Double check please Write each of the following as a common fraction or mixed number. Write your answer in lowest term 28. 15.35 Answer: 1535 / 100 = 307/20 = 15 35/100 is 15 7/20 Complete each of the following statement, using the symbol < or > 5/16 _0.313 Answer > 
education
1.Transition planning for children with special needs should focus primarily on: a.maintaining continuity of services b.getting the child ready for school c.the family's needs d.the child's needs. My answer is d.the child's needs. Will someone please check my answer 
trig
Use an addition or subtraction formula to write the expression as a trigonometric function of one number: tan75degreestan15degrees/1+tan75tan15=tanAdegrees =square root B Its asking for the value of A and B. I know A =60 degrees, what I can't figure out is B, I don't ... 
math
Would this be a good resource for my students? This website? Yes, I believe so. We have several people who are very good at helping students with their math homework questions, from elementary school through college levels. Be sure to check out the Mathematics collection, too... 
Math/Physics
Please check my work below and comment. A tank initially contains 80 gallons of fresh water. A 10% acid solution flows into the tank at the rate of 3 gallons per minute. The wellstirred mixture flows out of the tank at the rate of 3 gallons per minute. Find the amount of acid... 
E.L.A. PLEASE CHECK!
Which choice best describes the underlined words in the sentence? Use a star chart to identify the stars and planets on a clear night. Underlined: (The whole sentence is underlined) Asimple predicate B compound predicate C complete predicate D none of the above I think it ... 
Math
Taryn mowed lawns. Taryn mowed 9 lawns within the past week. Time spent mowing lawns (in hours)=7.5 Money Earned=$112.50 How much does Taryn charge to mow a lawn? $15.00 per hour Can you please check to see if this is correct? Thank you 
Math
Hello, could someone check my answers please? The Equation; $4.50h = 20.00 shows the cost to play h hours of miniature golf how many hours of golf were played? Answer choices: A: 3 HOURS B:4 HOURS C: 4.8 HOURS D: 6.4 HOURS My answer: 4.8 hours 
Math (Trig) a.s.a.p, thanks!
verify the identities: 1.) 2tanx(1+tanx)^2 = secx 2.) cos(x330degrees)=1/2(ã3cosxsinx) *the ãis only over the 3* 3.) 1+cos2x/sinx=cotx any help is greatly appreciated!! 
trig
Solve the given triginometric equation analytically. Use values of of x for 0 less than or equal to x less than 2pi sin^2x  2sinx = 1 How do I get towards the answer of 3.569, 5.856 Thank you again 
Algebra 2 / Trig
Here is the problem that I'm having trouble with: Rewrite each series in a sigma notation and find its sum. 1+.09+.81+... I have no idea how I find the common difference or ratio in that one. 
trig
Give the measure of the acute angle with each given value to the nearest tenth of a degree. cos A = 0.1 (84.3 degrees) sec D = 1.8 (65.3 degrees) That is all it gives :( How would I go about solving this? 
Trig/Math
Find all the points having an x coordinate of 2 whose distance from the point (1,5) is 5. so far i have 5=sqrt((12)^2+(2y)^2) 5=(3)^2 how do i simplify the rest of the equation so i can find x. do i foil it out? thanks. 
Trig
How do you express these problems as single trigonometric function values or as single numbers, using identities? 1. cos^2pi/81/2 2. tan34degrees/2(1tan^2 34degrees) 3. 1/8sin29.5degreescos29.5degrees 
Trig
How do you express these problems as single trigonometric function values or as single numbers, using identities? 1. cos^2pi/81/2 2. tan34degrees/2(1tan^2 34degrees) 3. 1/8sin29.5degreescos29.5degrees 
trig
2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above. 
Trig: Conics
Sketch the graph and find following info: Vertex: Focus: Directrix: Axis of Symmetry: Ends of Latus Rectum: (x2)^2=4(y3) I think the vertex is (2,3) is this correct, and how do I proceed on? Thank you! 
trig
Mr. Saurik proposed that the function h(t) = 6sin(3pi(t)  pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain. 
trig
plot of land ABCD such that AB = 85m, BC = 75m, CD = 60m, DA = 50m and angle ACB = . Determine the area of the plot in hectares correct to two decimal places 
Math (Trig)
Find the indicated ratios in the triangle. Right triangle with a height of 2.56cm length of 4.65cm and hypotenuse of 5.31cm a. tan A b. cos C c. sin C How do I figure this out? 
trig
Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest degree, if necessary. cos θ = 0.9659 A = ? H = 20 
math plz check ;;
Order the following solids from least (1) to greatest (3) volumes. A rectangular pyramid whose base has an area of 60 in2 and whose height is 10 in. third A rectangular prism with a length of 6 in, a width of 5 in, and a height of 10 in. first A right cylinder with a diameter ... 
Physics
please check my answers, they are Capitalized 1. the SI base unite used to measure mass is the a. meter b. second. C. kilogram d. liter 2. how does a scientist reudce the frequency of human error and minimize a lack of accuracy? a. take repeated measurements b. use the same ... 
English
Can you please check these two sentences, again? I had misspelt a noun in my previous post. 1) Define the interior monologue providing an example of its use from the readings done in class. Explain then in what way it differs from the stream of consciousness. 2) Focus on Joyce... 
Art
Ms Sue, can you please check my post until Writeacher comes back? I would be extremely grateful to you. I need to rephrase this sentence. 1)Give a detailed description of Winston Smith as he appears in the opening to George Orwell's 1984. Refer to the place where he lives, the... 
Art
Writeacher, could you please check this sentence? Thank you. 1) The scientist could be consider as a “New Prometheus”: like fire, donated by Prometheus, could be for men a great resource, but at the same time a threat if they had not been able to manage it, so the ... 
Math
I need someone to check my answer, can someone please help me? Here is the problem: Business and finance. In a bottling company, a machine can fill a 2liter (L)bottle in 0.5 second (s) and move the next bottle into place in 0.1 s. How many2L bottles can be filled by the ... 
Technology
Please check this for me: 5. The freezing point of water on the Celsius temperature scale is a. 0 degrees b. 32 degrees c. 100 degrees d. 212 degrees A 8. A measurement for a rectangular box is given as 150 cubic inches. This measurement indicates the _____ of the box. a. ... 
ScienceJiskha teacher
Can any jiskha teacher who knows about this subject well, please look at my other previous science posts to check to see if they're correct and all, bacause someone named bob has been going through them, and just saying that they're right, but I'm not too sure about that, ... 
English
A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there. Wait for me. (Would ... 
Math
1) Describe the relationships you discovered in the Fibonacci sequences. 2) what strategies did you use to search for relationships. 3)how many examples of a relationship do you need to check before you start to believe that the relationship might be true for the entire ... 
science please check my answer
A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change? It will double. < It will be cut in half. It will not change. It will quadruple. It will be... 
History
The United States cut off sales of oil to Japan after the ? A. Japanese attack on Dutch Indonesia. B. Japanese attack on Pearl Harbor. C. Japanese occupation of southern Indochina. D. Japanese occupation of Hong Kong. I think it is C. Am I right please check my answers 
math
Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her brother, Brandon. Anne is 23... 
math
Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her brother, Brandon. Anne is 23... 
Social Studies
1) What statement best describes Yokohama? A) Yokohama is an ancient political center B) Yokohama is a rural farming village C) Yokohama is a large, crowded city D) Yokohama is an important mining town 2) What describes a difference between life in japan and life in the United... 
check please
i think its nervous Which word in the sentence is the predicate adjective? During the scary movie, Clinton seemed nervous. A. during B. Clinton C. nervous D. movie 
math
I need help solving these equations 5s+3s2s=48 6m=5m2+m 5d=2d24 you need help or you want someone to solve them for you? ;) please solve : ) thanks okay well pretty much solve for s in the first question and m for the second question and d in the third and when you think ... 
Math
When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work. 
Math
When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work. 
Physics
How much work is done in lifting a 6kg object from the ground to a height of 4m? A 12n object is lifted 5m how much work is done How much work is done if a 5n object is lifted from the ground to a height of 8m? How much gravitational potential energy does the object gain? 
chemistry 12
sry, a misprint. its: O2+2F2 <> 2OF2 The question is looking for Kc. 2.50 mo of oxygen and 2.50 mol of fluorine gas are placed in a 2.00L glass container at room temperature. The container is heated to 400K and the following equilbirum is established: O2+2F2 <>... 
biology
Different enzymes work better under different conditions. Where in a human body might it be beneficial to have enzymes that work well in very acidic environments? 
7th grade math
i was trying to work out the problem (1.00x)50/15x. (x=.40g this is the answer) when i work it out i get 5050x/15x but i dnt understand how this equals .40?? help plse 
writing
there are three elements: (1) Difference between college and casual writing, (2) identifying the step from this week’s reading that you need to work on, and (3) the actions items that you will do to work on this step. 
Math
I already figured most of these out, but I need to learn how to SHOW MY WORK! Can anybody teach me? I need to find the value of each letter. Once again, how can I show my work? g+g+g=d j+e=j g^2=d b+g=d fb=c i/h=a(h>a) a*c=a 
algebra
Is the following pair of lines paralle or perpendicular? Prove the answer. 2yx=2 y+2x=4 I think that the lines are perpendicular but do not know how to work the problem. x=6/5 y=8/5 Can some one show me how to work this equation? 
Physics
If a box is being pulled up a hill at an angle to find work, its W=Fdcos(angle) If a hiker is walking up a hill, the work done is W=mgh right? When do you know when you can use what formula? 
math
Im having a problem understanding this problem so I cant solve it. Bruce knows how many key are on his keyboard, but some don't work. How does Bruce find the number of keys that work? write to explain 
Physics
The work required to bend a steel beam with a spring constant of 10^6 n/m is 5 j. If it is treated like a perfect spring, what is the displacement of the beam? A. 3.2 mm b. .03 m C. 2.5m D. 0.026 m e. 0 Pls show work thank u! 
physical science
A river does 6,500 j of work on a water wheel every second. The wheel efficiency is 12%. A. How much work in joules can the axle of the wheel do? B. What is the power output of the wheel in 1 s? 
english
select the antecedent of the pronoun in the following sentence. The strikers will return to work when the union representatives have completed their negotiations. A. negotiation B. representatives C. work D. strikers 
Chemistry
the longest wavelength of light that will cause an electron to be emitted from a metal is 520nm. what is the work function for this metal? (note: the work function is given as kJ/mole of electrons released) 
PreCalc
Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x4)/(x(x4)) How would I show my work? the x4 cancel out and I am left with 1/x. The vertical asymp. is x= 0 
Language Arts: plz help
In the following sentence, identify the adverb. Joseph went to school early to do makeup work with his teacher. A) makeup B) work C) his D) early I think it is B 
English
I left out the following sentences. Thank you. 1) Other minor adjustments can be made to improve your situation at work. 2) First, you should communicate your point with clarity and respect. Second, you should do your best to maintain a balanced lifestyle by spending enough ... 
Please CHeck my French
Chère Mme Guerit J'ai mal à la gorge. Je ne mange rien. J'ai une mauvaise mine et je suis fatiguée aussi. Je dois prendre un médicament. Doisje appeler un docteur? Qu'estce que je dois faire pour avoir une bonne mine? 
Chemistry(Please check)
1) The reaction A + B + C = products has a rate law rate = k times A times C squared. Which of the following will result in an increase in the rate constant for the reaction? #1  increasing the temperature #2  adding a catalyst #3  doubling the concentration of reactant C I... 
Anatomy and Physiology
Hello! Thanks for checking my question! ____ 15. When the aortic valve opens into the aorta, blood flows (1 point) a) out to the body. b) into the right atrium. c) into the left ventricle. d) out of the pulmonary artery. My Answer: A Could someone please check my answer? ... 
polynomial function
Please check my answers. Find the yintercept of the polynomial function. f(x) = x2  2x + 8 I got:y=8 f(x) = (x + 1)(x  6)(x  1)2 I got: y=6 f(x) = x2(x + 6)(x2  1) I got:y=0 
data 12
From a lot of 12 flares, 4 are selected at random. if the lot has 4 defective flares, what is the probability that all 4 will not work. B. whats the pobablity that at most 2 will not work? 
Math
In the United States workers spend 72% of their gas usage to go to and from work. What fraction represents their nonwork travel and gas usage? 
College Math II
x/x – 1  3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks. 
work/science
A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter? 
science
Need to prepare a lab that requires 1000ml of 1.0M HCl. You find some 3 M HCl to work with. What do you need and how would you work it out? 
Math
I don't understand this it says If the average of 6 numbers was 58, what could the 6 numbers be? That would take forever to work out. What is the easiest way to work that out 
physics
when yo say work is done? ans:work is said to be done when the force acts onthe body &if the body moves in the direction applied by the force 
Math
The table shows the number of volunteers that work at a radiothon for different numbers of hours . How many volunteers can be expected to go to work for 9 hours?