Trig check my work please?
89,826 results, page 88

Math
A student covers the outside of a show box with construction paper. If the student does not cover the lid, what is the surface area that is covered? Please show work. Possible answers: A) 982.25 B) 1433.50 C) 1964.50 D) 5044.50 
Vince
Please show work for Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and the atom absorbs a photon of light with an energy of 2.044 X 10^18J? thank you very much for your help 
PHYSICS
A skier is gliding along at 2.0 m/s on horizontal, frictionless snow. He suddenly starts down a 10 ∘ incline. His speed at the bottom is 15 m/s . a).What is the length of the incline? b).How long does it take him to reach the bottom? (Please show work) 
math
I'm so lost I have no idea. Please help Write the equation of the line that represents this graph. Show your work or explain how you determined the equations. graph of line going through ordered pairs (0, 300) and (450, 0) 
Physics
At what speed would a 50kg person have to run to have the same kinetic energy as a 1000kg auto traveling at 100 km/h? Help ASAP please!! Show work step by step along with the equation 
density and density error (check calculations)
Calculate the density of earth and its density error d=m/v where m = 6.00*10^24kg and v = (4/3)(pi)(6359000)^3 = 1.07709...*10^21 m^3 therefore d=6.00*10^24/1.07709...*10^21 m^3 d = 5570.5254...kg/m^3 using the sig fig rule, in division and multiplication take the least ... 
PhysicsPlease checkI had something wrong with my
Would changing the frequency of a wave cause a change in amplitude? I would say only if the wave velocity remains the same because if the frequency increases, vibrations increase and then amplitude would decrease, correct? If I had a wave diagram will 4 complete waves showing ... 
math check please
1) True/false: For any real number x, ln e^x = x. I think that is true. 2)true/false: (2 ln x)/ ln 10 = ln x^2  ln 10 for all positive x. I think this is true too. 
Accounting
Beginning work in process inventory 17,000 40%. Transferred in from the prior department 72,000. Ending work in process inventory 18,000 30% According to the company records the conversion cost in the beginning work in process inventory was $63.104 at the beginning of ... 
Physics
A trunk of mass m = 1.100 kg is pushed a distance d = 32.0 cm up an incline with an angle of inclination theta = 26.0 ° by a constant horizontal force P = 150. N. The coefficient of kinetic friction between the trunk and the incline is 0.330. a) Calculate the work done on the... 
Algebra
Could you please check my answers and help me with one? Find the domain of the function. f(x)=8x2 I got the domain being (negative infinity, postive infinity). g(x)= 3x/x^2 49 (This one I don't understand how to find the domain) 
GeometryPLEASE CHECK ANSWERS!
In isosceles triangle DEF, DE=DF. Which of the following is true? 1) <D is congruent to <E 2) <F is congruent to <E 3) <D is congruent to <F 4) <D is congruent to <E which is congruent to <F Is the answer (3)? In triangle ABC, if line AB is congruent... 
U.S history
Was Slavery the basis of freedom in colonial America? This what I hvae written I feel like its to much and would like to shorten it and make it sound more college level plz help. In colonial America slavery was the basis of freedom. In areas such as Europe and foreign ... 
Calculus
Find the area of the region bounded by the curves y = x^2  1 and y = cos(x). I've tried doing this and I got 1.54 which doesn't make sense because area should always be positive right? And I put it in an online calculator to check and it gave me 3.11. I think I may have ... 
Spanish
Hola! Could you please check my work to see if my answers are correct? Muchas gracias! LOS MANDATOS AFIRMATIVOS. Forme mandatos afirmativos directos según el ejemplo: Ejemplo:BUSCARLO (tú)= búscalo 1. CONDUCIR (Ud.)= conduzca 2. PREGUNTARLES (Uds.)= preguntenles 3. COMER (... 
math
how would you solve for y in this problem: x=(y^2+3y)^(1/3) I got: y= x^3/y  3 ? and for this problem: x= 1/[(y^2+3y5)^3] I got: y = y/x + 5/y  3? However, I do not know how to solve for y explicitly. I don't think quadratic formula would work in these problems. Please help... 
Art
Thank you very much. I still need you to check a few urgent things, Writeacher. 1)The line is engaged. Would you hold? Would you like to hold the line? Would you like to hang on/hold on? Which are possible? 2)You needn't have bought the milk; there was some already/there was ... 
Grammar
Can you please check these? Thanks. Vowel Pairs: freezing rain sleet beat gray streets blue play Kay raisin feel easy Vowel Digraphs: looked said caught headline said school because heavy weather good sleigh said could neighbor bread instead 
Math 222
Posted by Monica on Thursday, October 23, 2014 at 6:36pm. Please help me solve these two Rational Expressions? Sorry my addition sign does not work on my keyboard, so that is why I am using the word "plus". 1). g^26g55 __________ g 2). k^3 plus k ___________ k^2 plus k42 
physics
an 85kg concrete block rests on a flat surface with coefficient of static friction us=0.42. find the maximum force that can pull on the block with, angle of 38 degrees above the horizontal without moving the block? please help and show work 
english/check please
Change each of these indirect quotations to direct quotations.Punctuate your quotation properly. examples:  Mrs king said,"I enjoyed our golf game" _Mrs king said that she enjoyed the golf game. 1)Mrs.King said that she wants a new putter. Mrs King said," I wanted a new ... 
Chemistry  DrBob222 please check and help
Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ > Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ > 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+ + Cr2O7^2 > Cr^3+ + Fe^3+ Balanced ... 
Chemistry  DrBob222 please check and help
Can you check these? And I need help on one. Oxidation Number Method of Balancing Redox Reactions 1)Neutral Solution Sn^2+ + Fe^3+ > Fe^2+ + Sn^4+ Balanced equation Sn^2+ + 2Fe^3+ > 2Fe^2+ + Sn^4+ 2)Acidic Solution Fe^2+ + Cr2O7^2 > Cr^3+ + Fe^3+ Balanced ... 
Agility Training
please check my answer thanks :) A runout occurs when a dog A. runs off the course. B. jumps off an obstacle. C. must turn back to complete the next obstacle. D. takes an obstacle out of sequence My answer is D 
math
please check my answer. each test is worth 100 points. the following test have been taken and earned 91, 90, 93. for a total of 360 points to earn an A, what grade should be made on the final test to earn an A my answer is 91.5 
geography, Ms. Sue
Thank You I have two more. Will you check them for me please? 1. What two deserts does the Tropic of Capricorn cross on the continent of Africa? The Kalahari and Namib deserts 2. Is 80 degrees N closer to the equator than is 40 degrees S? No, 40 degrees S is closer Thanks ... 
Child Development
Which of the following groups requires more irregular scheduling than the other three groups? A. 12to 18 monthsold B. 3t0 5 years old C. school age children D. 18  to 36 months old My answer is C can someone check my answer please 
6th Grade Math
Can you check my answers please? 1. Convert 2 and 3/4 qts to pints. 1 qt = 2 pints (unit ratio = 2/1) 2 and 3/4 x 2/1 = 9/4 x 2/1 = 22/4 = 5 and 1/2 pints 2. A 40foot power boat is for sale. How long is the boat to the nearest yard? 1 ft = 3yds (unit ratio = 1/3) 40 x 1/3 = ... 
Please check this :D
Tyler wrote a paper describing life in England in the eighteenth _________, from ______ to ______. I think its A. A. century; 1801, 1900 B. decade; 1701, 1800 C. century; 1700, 1799 D. century; 1701, 1800 
chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ... 
chemistry
Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first ball (system) stops rolling after the ... 
math word problem
Andy and William work together to build a toy house. It will take William 5 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finish their work. If William works alone, how many hours will it take to finish his work? 5 10 15 20 Explain how you arrived at the answer. 
math.can someone check my answers?
can someone check my math answers its only 5 questions thanks. please check my answers ! 21. Find the unit price for each option shown below. Round to the nearest cent when necessary. Indicate which option is the better buy. Option I: 10 candy bars for $6.75 Option II: 12 ... 
physics
A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface with coefficient of ... 
physics
A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface with coefficient of ... 
trig
Which expression is equivalent to tan thetasec theta/sin theta? I don't get this 
Math  Trig
Given that a measures 25.1 mm, x measures 51.2 mm and angle b measures 82°, find the length of y  
trig
if sec theta=5/4 and 180degree < theta< 270degree, find tan theta a.3/5 b 4/5 c.3/4 d.3/5 
trig
if one of a quadratic equation is 1/22i, what is the equation. the other root is 1/2+2I but i don't know how to find the equation 
trig
establish identity 5csc^2theta3cot^2theta=2csc^2theta+3 
PreCalc/Trig...
standard form: y=x^24x5 vertex form: ? intercept form: ? 
Trig
secθsinθ is equivalent to: Ans: tanθ? 
Trig
Which is cos2 theta if sin theta = 2/sqrt13 and 180 < theta < 270? 1. (13/5) 2. (5/13) 3. 5/13 4. 13/5 3? 
Trig
Given Tan(A) = 5 in Quadrant III and Sin(B) = ⅔ in Quadrant II, what is the Quadrant of AB? 
Trig
How do we show (sin 10)^2 + (sin 50)^2 + (sin 70)^2 = 3/2 ??? I can't even think of a way to start this.. 
SCIENCE
CAN SOMEONE PLEASE HELP ME AND TELL ME IF IM RIGHT even a guess would be good ive been trying 4 a answer since 6:00 PLEASE help me :/ i think that the 2nd one is correct because i no that energy is not lost when water is boiled it is gained because of the bubbles and electrons... 
cell biology
1.The________particle halts the translation of the mRNA to a polypeptide before checking to the ER a. singal recognition, permanently b. signal recognition protein receptor, permanently c. singal recognition, temporarily d. signal recognition protein receptor, temporarily I ... 
Child Care
Which of the following statements about children and computers is incorrect? A. To be effective, a child's computer learning experiences must be planned and supervised. B. At a day care center, computer time should be scheduled like any other activity. C. During children's ... 
Language Arts, check!!!
Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should only live there." 3... 
Math
Andy and William work together to build a toy house. It will take William 6 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finiah their work. If William works alone how many hours will it take to finish his work? 
accounting
Can anyone help me with this? Guard Dog Company recently changed its system of internal control over cash disbursements. The system includes the following features. Instead of being unnumbered and manually prepared, all checks must now be prenumbered and written by using the ... 
accounting
Guard Dog Company recently changed its system of internal control over cash disbursements. The system includes the following features. Instead of being unnumbered and manually prepared, all checks must now be prenumbered and written by using the new checkwriter purchased by ... 
language arts help please
9. Which sentence uses the past form of an irregular verb? My friend is keeping a journal. Adam has seen that show twice. Elsa gave me this book. We listened to the weather report.*** 10. What does the present perfect tense show? action that began in the past and continues in ... 
math urgent please help
Mrs Buttler bought 1,800 shares of Stairwell Mutual Fund At an offer price of $3.00 per share. She later sold the shares at a net asset value of $4.60m per share. During the time Mrs Buttler owned the shares, Stairwell Mutual paid adividend of $0.80 per share. What is Mrs ... 
Physics 
The work function of cesium surface is 2.0eV (a)find the maximum kinetic energy of the ejected electrons when the surface is illuminated by violet light with wavelenght = 4.13 x 10^3 Angstroom unit h = 6.63 x 10^934)Js (b) what is the threshold wavelenght ( the largest ... 
U.S.History
please check: 1. Which of the following best describes the ideology of Transcendentalists? a. humans are naturally bad b. Individuals should rely on outward rituals and group worship c. People's lives have been predetermined by God d. humans should be selfreliant and act on ... 
English
Can you check these please? 1)It would be nice if our Italian students could start an email exchange with their new American friends. 2)The committe has organized a buffet farewell party to wish the American students a good journey home. 3) What time are you flying back? Have... 
English
Hi! ____ 13. Which of the following statements would best state the main theme of The Call of the Wild? (1 point) a) Perseverance pays off. b) Only the strong survive. c) If at first you don’t succeed, try and try again. d) Keep your friends close and your enemies closer. My... 
Algebra 2
would some one please check these for me 1. divide x^236y^2 over 5x^2+30y divide (x^26xy) A: x+6y over (5x)(x^2+6y) 2. Add. Express your answer in simplest form. 2x 0ver x^2+15x+54 + 4over x+6 A: 6 over x+9 3. solve: (9 over x5) 1= 8 over x+5 A: 10 and 11 This one I am ... 
physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and á = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is ìk = 0.40. The mass m2 is moving up at a constant speed. (a) What is the magnitude of F? (b... 
Math
A football coach divides 42 players and 12 coaches into groups. Each group will have the same number of players and coaches. What is the greatest number of groups that can be formed? a. 12 groups b. 6 groups c. 2 groups d. 4 groups My answer is 6 groups because I found out ... 
physics
A horizontal force of magnitude F = 116 N is used to push a box of mass m = 9 kg from rest a distance d = 13 m? 1)How much work is done by the force on the box? WF = 2) How much work is done on the box by the gravitational force during this same displacement? Wg = 3) How much ... 
physics
The magnitude of the electric field between the plates of a parallel plate capacitor is 3.0X10^5 N/C. Each plate carries a charge whose magnitude is 0.17 µC. What is the area of each plate? can someone please work with it in numbers!! 
statistics
Assuming that the weights of newborn babies are normally distributed with mean 6.5 pounds and standard deviation 1.2 pounds, how many babies in a group of 80 do we expect to weigh more than 8.9 pounds? Please show work Thank you 
algebra
List all possible rational zeros for the polynomial below. Find all real zeros and factor completely. Please show all your work. f(x) = 2x^4 + 19x^3 + 37x^2  55x  75 
Chemistry
When 50.0ml of 1.00M HCl is titrated with 1.00M NaOH, the pH increases. calculate the difference in pH of the system when you add 49.99ml NaOH and 50.01ml of NaOH. Please work out detailed steps. 
math
Paul multiplied the sum of three and a number by three. This result was equal to fifty four plus twelve times the opposite of the number. What was his number? please explain and show work. 
physics
100 kg car moving at 22 m/s runs into a horizontal spring with spring constant 4200 N/m. How far does the car displace the spring before coming to a stop? Please show your work. 
math 11
The axis of symmetry of a graph is the vertical line x=5. One of the xintercepts is (11,0). What is the other xintercept. Explain how to do this either by showing work or how to enter it into the TI83Plus. Up until now I've had equations to work with so this one has me stumped. 
Algebra 2
In triangle ABC , <C is a right angle. Find the remaining sides and angles. Round your answers to the nearest tenth. Show your work. a = 3, c = 19 c^2= a^2+b^2 19^2 = 3^2+b^2 361= 9+b^2 b= √352 = 18.8 tanA= 3/18.8 A= arctan (3/18.8) A= 9.1 tanB= 18.8/3 B= arctan (18.8... 
Spanish (Sra)
Can someone check my work? English: My cousin came over to play. We were running around the living room. My brother and cousin crashed into each other. And my brother cut the corner of his eye open. Spanish: My primo vino a jugar, Nosotros estábamos corriendo alrededor de la ... 
Computer
What types of issues can you likely resolve by knowing how to access and use the Control Panel? Choose all that apply. network issues*** screen resolution and volume issues**** frozen application issues virus issues What can help prevent issues related to downloading content ... 
Physics, van de graff generators...
When a small metal ball with a charge is placed in an electrical field supplie dby a van de graff generator, it experiences a force from the generator, and thus it applies a reaction force. But does the ball also apply a force met with a reaction force of the generator? Also, ... 
trig
Find the exact value of the trigonometric function given that sin u = − 8/17 and cos v = − 3/5. (Both u and v are in Quadrant III.) cot(v − u) 
Trig
Half Angle Identities cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. 7rt2/10 b. 7rt2/5 c.7/25 d.4/5 I get 7rt2/5 Is this correct?? 
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 ... 
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... 
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 ... 
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
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 
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... 
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?