Trig check my work please?
90,377 results, page 81

Trig
Find sin(s+t) and (st) if cos(s)= 1/5 and sin(t) = 3/5 and s and t are in quadrant 1. =Sin(s)cos(t) + Cos(s)Sin(t) =Sin(1/5)Cos(3/5) + Cos(1/5)Sin(3/5) = 0.389418 Sin(st) =sin(s)cos(t)  cos(s)sin(t) =sin(3/5)cos(1/5)  cos(1/5)sin(3/5) =Sin3/5 cos3/5 = 0.46602 HELP ... 
psychology
Which of the following is stressed by the APA professional code? A. high levels of competence, integrity, and responsibility B. use of the scientific method in testing hypotheses C. application of scientific research methods to the study of human and animal behavior Please ... 
Spanish
I had to answer the questions in the negative please check 1.Hay alguien en la puerta? No, no hay nadie en la puerta. 2. Hay algo en la mesa? No, no hay nada en la mesa. 
Spanish
Please checkI had to correct the first sentence to make it correct in the second No hablé con alguien en la escuela No, hablé con nadie en la escuela. 
Spanish
Please checkI had to correct the first sentence to make it correct in the second No hablé con alguien en la escuela No, hablé con nadie en la escuela. 
math
A graph is given with the line going from (2, 2) to (2,8). a) Find the length of this line. b) Find the midpoint of the line. c) write an equation for this line. my answers a) 2√10 b) 0,5 c) y = 1.5x + 5 please check these answers. 
English
Can you please help me check these sentences? Some of them don't make sense at all.I tried to check some of them though. 1) Brutus has a strong sense of republican liberty 2) Brutus fears what Caesar could (would/may) become if he were crowned. 3) He is not sure about this: he... 
U.S History (Please Check)
Which factor contributed most to the increased importance of literature in American culture during the 19th century? The success of major socialreform movements***** The spread of utopian communities throughout the nation The migration of European intellectuals to the United ... 
Calc Help
q=2500+(600/r+2)40p Find dq/dp q=3000100z+(400/p+5) Find dq/dp Please help. Final tom and can't figure this out. I know it's simple. Yes, they are simple. Show your work, I will critique it. 
Algebra
Can someone please help? I have to solve.... An employee produces x units per hour earns an hourly wage of y = 0.50x + 11 (in dollars.) What is the wage? How many hours does the employee work? 
need help in math
Please show your work thanks for your help. A children's store sells a toy racetrack for $94.25. The owner uses a 45% markup based on cost. What was the whole sale cost of the racetrack? 
Physics
On vacation, your 1500 kg car pulls a 540 kg trailer away from a stop light with an acceleration of 1.60 m/s2. (a) What is the net force exerted by the car on the trailer? please show work 
Chemistry
Could you please tell me how to work out the net balanced equation of 'aqueous solutions of sodium sulfate and barium nitrate when they are mixed?' *Do we just ignore sulfate and nitrate??????? 
science
At the speed of 2.5 m/s, how many seconds will it take the kayak to run a 4,500 m course? What is the speed of the kayak inn kilometer per hour? I want to work it on my own, just need help with formula please thanks 
physics
What would happen the the wavelength of an organ pipe if you fill it with helium instead of air? What would happen to the fundamental frequency? Explain Please show all work, Thank you 
College Algebra
Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log base 6 (64x^3+1)log base 6 (4x+1)=1 
Physics wavelength problem! Please Help!
A communications satellite transmits a radio wave at a frequency of 5 • 109 Hz. What is the signal’s wavelength? Assume the wave travels in a vacuum. Show your work Thank You! 
Intermediate Algebra
I am having trouble with these two. Can you please help me?? Find the following product: 4x^2y (4x^3y^5) Essy, Show all work. Find the following quotient: 16x^225y^2 ___________ 4x + 5y 
math
solve the polynomial inequality and graph the solution set on a real number line. express the solution set in interval notation x^3+x^2+64x+64>0 show work please 
sci
Find the change in the force of gravity between two planets when the masses of both planets are doubled, but the distance between them remains the same. Please include your work! 
Math
If the total cost function for producing x lamps is C(x) = 90 + 36x + 0.1x^2 dollars, producing how many units will result in a minimum average cost per unit? PLEASE EXPLAIN YOUR WORK Thank you 
Math
The sum of two numbers is 15. Three times the second number minus four times the first number equals 4. What are the missing variables? Please show your work. 
chemistry
It takes 445.76 J of heat to increase the temperature of a 50.0 g piece of metal from 20.0 °C to 65.0 °C. What is the specific heat capacity of the metal (assuming the phase doesn\'t change)? Also please show work 
intermediate algebra
Hello, I am so stuck...I even watched two hours of videos, but it didn't really help me:( I am working on these kinds of problems... 3x4+5>32 And...as part of our homework, we have to enter it on the computer in interval notation. So I know that I solve it for both sides ... 
Compliments
Hey, Im trying to find lots of compliments. For example, if someone makes a really nice drawing or whatever, and enhances it with their own techniques and stuff, what comments could I give to them? Here is my list: *Very creative work *Like the blend and flow of all the ... 
Chemistry: please help, I am stumped
When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ... 
Science
For my science class I have to make a machine that attempts to convert heat energy into work. I'm not really sure how to do this, but I do have some ideas, however I'm not all the way there. If you told me your opinion of my ideas or if you gave me one of your ideas that would... 
dwrls,math
PLEASE LOOK IN THE BOTTOM OF THIS MESSAGE...... solve for x: 3x  2y = 6 i need help in solving this: the possible answers has to be one of these: A)2y +6 divided by 3 b)3x 6 divided by 2 C) 2 + 2y D) 2/3y + 6 but how i keep trying and i don't get non of these. For Further ... 
Chem
At 58.8 degrees C and at a total pressure of 1.00 atm the mole percent of acetone in the vapor state above a solution of acetone and water containing 70. mol % acetone is 87.5%. Assuming the solution to obey Raoult's Law, determine the vapor pressure of pure water at this ... 
Math Analysis
Can someone check my answers please? Thank you! If tan x = 3/5, evaluate: 1) tan 2x 2) tan 3x ==> For #1, I got 15/8; for #2, I got 99/5. Are these answers correct? 
powers of exponents math
simplify each expression: can you check and help me please a) 3*3*3 i got: 27 b) (2)(2) i got: 4 c) (125)(125)(125) i got: 1953125. d) (2)(2)(2) i don't know: e) (1) (1) i got : 1 f) 4*4 i don't know: 
Write each expression using a single exponent.
Write each expression using a single exponent. 34.) 5^10/5^7 36.) 76^11/76^5 Please, Please, show work. 
Spanish
Can someone please check my work? These students are at school. Put the senence in the correct order using the correct form of the verb ir. 1. Sandra y Pablo/gimnasio (ir) Sandra y Pablo van al gimnasio. 2. yo/todos los dís/a la escuela (ir) Yo estoy a la escuela todos los d... 
math
If 1/2 of a number, 1/3 of the number, 1/4 of the number, and 2/7 of the number are added together, the sum is 575. What is the number? Please show steps/work. 
Langauge
I NEED HELP WITH MY LANGAUGE WORK!!! I need to unscramble "PRLAUGNILIBETLIC"! sOMEONE PLEASE HELP!!! 
check chem!
Can u please check. Would this answer be right? #1) In reference to the information given above, determine the following. A 0.10 mol/L solution of H2Te(aq) is prepared and found to have a pH= 1.85. Calculate the Ka value for H2Te(aq). The Ka value for H2Te is 0.002279mol2/L2... 
Math
5L= ?cL 102mL= ?L 1895g= ?kg 2.3kg= ?g What is the square root of 36/49? Please check this table to find the equivalents. (Broken Link Removed) Using my calculator, 36/49 = 0.7346938 Hitting the square root button gives us 0.857148 << What is the square root of 36/49?>... 
Health info
please check my answer thanks :) Mr. Jones, angry at Dr. Bob , throws a punch at him but misses. Dr Bob sues for battery. why will Dr Bob lose? 1.There was no physical contact 2. Dr Bob was not harmed I picked #1 no physical contact 
How dogs learn
Please check my answer thanks True or False The statement below describes classical conditioning... Classical conditioning involves the paring of a conditioned stimulus with an unconditioned stimulus I picked True 
Math(Please check)
The following function is onetoone; find its inverse f(x)=x^3+5 I know that the first step would be to set y = to x so I did y=x^3+5 Then you swap x with y so x=y^3+5. Then you solve for y and this is where I think i messed up. I did y^3=x5 = y=x^35 Then the inverse would ... 
Spanish 8th gradeCould someone please check this
Mexico DF is the word for Mexico City in Spanish I think that is false because they either say Mexico or el DF referring to Districto Federal, correct? They never say Mexico DF do they? 
Trigonometry, can someone check this please
A sled travels from point A at the top of a hill to point B at the bottom. If the sled travels 120 m from A to B and the vertical descent AC is 50 m, what is the angle of depression to the nearest degree? arctan=50/120 
Social Studies (Check, Please!)
With that policy is John Foster Dulles associated with? A: John Foster Dulles is associated with brinkmanship—the willingness to go to the brink of war to force the other side to back down. 
Spanish
Please check my answer. Are all the accent marks, grammar, and spelling correct? ¿Qué hago para ponerme en forma? Para ponerme en forma hago ejercisios y como bien. 
Government
Compare and contrast how public versus a private organization might address the immigration policy differently. include an explanation of how the delivery system of a public organization would be different than that of a private organization. for placement agency and private ... 
English
I used your synonym link. I included the words I found in parentheses. Can you check if they are appropriate, please? Thank you. ) The festival is held in Park City, Utah and represents one of the world’s premier showcases (synonym: main settings?) for new, independently ... 
ENGLISH CHECK
English is my second language; please help me to solve few sentences Which one is a complete sentence? Yesterday in the morning while I was asleep Cornered by deer in late evening while talking on my cell and listening radio Because I finished my home work, I may go out. I ... 
algebra inequalities
can you check these tell if the number after the: color is a solution x < 7; 7 i say yes p > 3;3 i say yes k is greater than or equal to 5; 0 i say no 3z is less than or equal to 12;4 i say yes n  5 > 3; 6 i say no 2g + 8 is geater than or equal to 3;1 i say yes ... 
Physical Science
How much work is needed to raise a 110kg load of bricks 12 m above the ground to being under construction? work in joules= weight*height where weight is mass*9.8m/s^2 
Algebra 2 help
1. (3ã6 * 4ã6)^12 Answer :6^7 2. 3ã9 * 3ã6 / 6ã2 * 6ã4 Answer: 3 Can you guys show me how to work those? I got the answers from back of the book, but I have no idea how to work it. The number behind the square root sign is the nth. 
algebra
A survey of 2,000 people was given to find their mode of transportation to work each day. The pie chart below gives the results. Of the people surveyed, how many travel by bike to work? 
Intergrated science
I need help... I don't know where to begin to answer this question. We are working in force/work ok... This is the question: A pole vaulter weighing 175 lbs leaps 16 ft over a bar . How much work is done? 
science
how do you calculate the missing variable in work and power;example:you must exert a force of 4.5N on a book to slide it across a table .if you do 2.7J of work in the process,how far haveyou moved the book 
Math
Jake can carry 6 1/4 pounds of wood in from the barn. His father can carry 1 5/7 times as much as Jake. How many pounds can Jake's father carry? Answer: 1 3/28 Can you please double check the above answer. I don't know if it is right or wrong. 2. A glass can hold 3 1/3 cups of... 
math
It takes Bill 24 minutes to type and spell check 10 pages. Find how many pages he can type and spell check in 5.5 hours. Round to the nearest whole number if necessary. A. 55 pages B. 138 pages C. 792 pages D. 229 pages 
chemistry
ho do you calculate final temperature? anyone please help thanks that's a little vague. Are you dealing with ideal gases? If so you would use the formula PV=nRT P = pressure V = volume of container n = moles (grams/molar mass) R = gas constant (0.0821) T = temperature sorry ... 
help asap please
GUIDELINE: Set achievable goals for your work unit. If I were going to set achievable goals they would be meet the deadline. Have the work be the best it can be. An example: Writing a research paper and the goals for it could be the following. To beat the deadline, to have the... 
spanish
Estoy interesado en conocer gente Quiero ver y experimentar otras culturas. Quiero aprender otras culturas. Quiero descubrir nuevas comidas y las personas. Quiero ver cómo es la vida sobre. Estoy interesado en sacar fotos de otros del país. Quiero probar diferentes alimentas... 
Math
please check my answer thanks :) How much money must be deposited now, at 6% interest compounded semiannually to yield an annuity payment of $4,000 at tha beginning of each sixmonth period,for a total of five years? Round your answer to the nearest cent. A. $38,120.80 B. $35,... 
spanish
"tengo que llevar un plato a la fiesta de Marta, pero no sé cocinar muy bien. ¿Qué debo hacer?" "Sugiero que _____ una enselada de frutas." a. prepares b. preparas c. preparabas d. preparo B i know i asked this before, but i forgot if Sra said it was correct or not please ... 
English
Could you please check these sentences, too? THank you. 1) I've just received an email from our national agency informing me that the deadline to apply to them for a preliminary visit to define the topic of our project was 18 November. What do you think we can do now? Do you ... 
English/Lit
I posted this earlier and someone suggested googleI did research various sites but I was wondering if anyone could perhaps check my answers and see if they would be a correct analysisthank you I have two questions I'm working on for home workcould you check my answers and ... 
chemistry can you check my answers?
can you please check my answers?? 9. For the following reaction delta H=2816 kj. 6 CO2(g) + 6 H2O(l) > C6H12O6(s) + 6O2(g) how is the equilibrium yeild of C6H12O6(s)affected by each of the following? a) increasing pressure of CO2 increase decrease no effect Answer: ... 
GeometryPlease check
I have two questions If a parallelogram is a rhombus, then the diagonals are congruent I don't think sothey can bisect each other and are perpendicular, correct but not congruent Secondly, A kite is a quadrilateral that has exactly 2 pairs of consecutive congruent sidesI ... 
Foreign languages
Can you please check these questions, Witeacher? Thank you. 1) Focus on Chapter 10 of Stevenson's Dr. Jekyll and Mr. Hyde and describes how Dr. Jekyll manages to separate his two identities. 2) What kind of narrative technique does Stevenson adopt? 3) In what way are Dr. ... 
Chem Check Please!!!
A voltaic cell is constructed that uses the following reaction and operates at 298 K: 2 Al(s) + 3 Mn2+(aq) 2 Al3+(aq) + 3 Mn(s). What is the potential, E, of this cell when [Mn2+] = 0.10 M and [Al3+] = 1.5 M? Answer: The EMF of this cell under standard conditions is : +1.66 V... 
English
Could you please check my sentences, please? Thank you, Writeacher. 1) You can't get out of it: you must confess that you have broken the vase. We were having dinner when the lights went out. 2) The teacher invited me to look up the unknown words in the dictionary. 3) Would ... 
MATH!+ check please~ thanks in advance!
the equation 2x^2+ cy^2+Dx+Ey+f= 0 represent a conic. state the value(s) of C for which each of the following are possible: A circle: My answer: c= 2 an ellipse: My answer: c>0, cant equal 2 Parabola: My answer:c=0 a hyperbola: My answer: c<o ( any negative number) are ... 
HIPPA Law
At what point during the course of treatment of a new pt should the notice and disclosure of health info ,required under HIPPA be given and why ? Please check my answer. I think that it should happen before treatment begins. does anyone else agree or have any other thoughts 
Science 8th grade
Please check my answer thanks What's the potential benefit of administering CPR to a person whose heart has stopped beating? A. Prevent blood clots B Prevent permanent brain damage C Prevent pericardial effusion D Prevent heart failure I picked D 
Advanced Math
Can someone check these for me? Please? Use halfangle identity to find the exact value of cos165 degrees. (1/2) sqrt(2+sqrt(3)) Write the equation 2x+3y5=0 in normal form. (2sqrt(13)/13)x (3sqrt(13)/13)y+ (5 sqrt (13)/13) = 0 Find the distance between the lines with ... 
CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?
1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2.625=4.575 1/4.575= .2185 I tried .22 & .21. They are both wrong. I... 
Mathplease check
5. Find three solutions of the equation y=9x4. (A) (5, 49), (2, 22), (3, 23) (B) (5, 49), (2, 22), (3, 23)*** (C) (5, 49), (2, 22), (3, 23) (D) (5, 49), (2, 22), (3, 23) 9.Which is a rule that describes the translation of a point from (4, 8) to (7, 10)? (A) (... 
Chemistry(please check, thank you!!)
Is this equation balanced? CoCl2(aq) + Na2CO3(aq) > CoCO3(s) + 2NaCl(aq) I think that it is because there is 1 Co on the left and 1 on the right. There is 2 cl on the left and 2 on the right. 2 Na on the left and 2 on the right and 3 CO on left and on right. Am I correct... 
math
Winborne has 35 coins consisting of dimes and nickels. If the value of his coins is $3.30 then how many of each type does he have? Please help to check on correct answer my answer is 31 dimes and 3 nickels 
Algebra 1
1.) Which best describes a system of equations that has no solution? •consistent, independent •inconsistent, dependent •consistent, dependent •inconsistent* ANSWER: D Please check my answer, thank you! 
Ethics
describe the role civil disobedience played in the civil rights movement It was central. http://www.answers.com/civil%20disobedience <~~Be sure to scroll down and read Britannica's and other entries. Please note that we don't do students' homework for them. Once you have ... 
Algebra II
Please help me out with this The numbers 1 through 50 are written with red marker on slips of paper while the numbers 51 through 100 are written with blue marker on slips of paper. All the papers are put into a bag and shuffled. One card is randomly selected. a. Find the ... 
math
From the following data calculate final balance and forward it in the pay stubs. Beginning balance $2000 Jan 2 Deposit $500 Jan 10 Check written to Alex company $600 Jan 16 Check written to Angels Company 
Algebra
Ok, I tried watching a video on how to solve a system by substitution. But I feel like I did it wrong, so can someone check my work and show/ tell me where I went wrong. So the system by substitution 2x3y=2 Y=2x+6 First I combined my 2 equations but without y so I’d have ... 
geometry
User: Courtney Thompson In Course: Geometry V8 ( 2167) Instructor: Tracie Morgan  WARNING: You must not leave this exam form! If you try to click back into this exam again prior to submitting, your... 
Math
This is the same equation as before just with different numbers. y=yo + (vo sin Q) t  1/2gt^2 This time the numbers are: 0 = 1.005 + (3.021 sin 30)t  1/2(9.8)t^2 4.9t^2  1.5105  1.005 = 0 This is the part where I am stuck. Did I do this correctly? sin 30 = 0.50 X 3.021 = 1... 
Social Studies
Which statement explains why division of labor increases work productivity? 1. Employers can pay workers more money when they get more done. 2. Employers must fire some of their workers so fewer people have to get the work done. 3. Workers learn their jobs more quickly when ... 
English
1. Take exercise on a regular basis, and you will be a happy person. 2. Earn a lot of money, and you will be a happy person. 3. Drive in the country, and you will be a happy person. 4. Play the violin, and you will be a happy person. 5. Play soccer with your friends, and you ... 
As Physics
Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2 mm are joined end to... 
math
I am a little confused on the first question of this problem could someone please check my answers and please explain why and what I need to do to get correct answer thank you Calculate the mean, and write this as a mixed fraction. 12,9,4,6,8,12,13,14,11,5,12,2,9,13 answer I ... 
english
Good suggestion from Bob Pursley. Also, if you want someone to check your work, please be sure to repost with the answers you've come up with. =) words that begin with IN a narrow strip ofwater which goes from a sea or lake into the landI N _ _ T food or drink that is I N _ ... 
social studies
We were worked in all weathers. It was never too hot or too cold it could never rain blow hail or snow too hard for us to work in the field. Work work work The longest days were short for him and the shortest nights too long for him. Which statements best paraphrases the view ... 
physics
A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work done by the 124N force. ... 
physics
A 15.2 kg block dragged over rough horizontal surface by constant force of 124N acting at an angle of 34.9 degrees above the horizontal. The block is displaced 37.8m. The coefficient of kinetic friction is .171. Acceleration is 9.8 m/s^2. Find the work done by the 124N force. ... 
bioethics
explain Dale Jamieson's "Denver Smog Argument" Is the argument good I couldn't find a copy of this work online. Please post your explanation of his argument and opinions about it. We'll be glad to critique your thinking. 
Math
Landon is working one plans for a 12acre housing development. A park will cover 2 1/2 acres, and paved areas will take 1 3/4 acres. How many acres are left for home sites??? Please show work, for how you did it 
Physics (please check)
Please let me know if my answers are not correct/not thorough enough. 1) Q:What happens when the number of loops in the armature of a generator is increased? 1) A:More loops= more voltage _________________________ 2) Q: Why does a piece of iron behave like a temporary magnet ... 
History of health care
Please check my answer thanks :) The American Association Of labor Legislation helped to Decrease public hospital costs or to implement fee schedules I said decrease public hospital costs 
language please check
1the baby was the PRINCIPLE reason for his happiness 2the jury heard only the PRINCIPLE facts 3It's not the facts that upset me,it's the PRICIPALS of the case 4his hay fever was the PRINCIPLE reason for his sneezing 5she was a person of strong PRINCIPLE 
english
Please check the meaning: "Like a cat in a corn crib, the girl pup sneaked in from behind and sank her needlesharp teeth in the coon's back." Just the "like a cat in a corn crib" part. Thanks! 
Chemistry(Please check, thanks)
Which choice below has the highest standard molar entropy? SiCl4(s), CCl4(g), CCl4(l), Si(Cl4(l) I know that the gas state has the largest entropy so SiCl4(s) would have the highest. Is my answer correct? Thank you!! 
Grammar
Recent graduates often demonstrate poor writing skills, hiring managers say. Subjects is graduates Verb is often Object is skills Please check my answers for subject, verb and objects. 
math help please check my answer
A roofer is standing on the roof of a house 60 ft above the ground. His truck is parked 25 ft from the house. What is the angle of depression from the roofer to his truck? Round to the nearest whole degree. 22° 23° 67° 68° <my answer choice 
math
log4(x3)=2 4^2=x3 16=x3 19=x Does this mean the solution would be x=19 or no solution? How would I check this to know if 19 is a solution. I know I plug it back in. Like so: log4(193)=2 4^2=193 16=16 Did i check correctly?