Trig check my work please?

87,593 results, page 19

U.S History

In the road to independence, Were any of the protests, etc. successful? How dou you know? Please note that we don't do students' homework for them. Once you have come up with a response to these questions, please re-post and let us know what you think. Then someone here will ...

mass communication

who is target audience of sex and the city? Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your work. =)

calculus-can someone please help me with this ques

Given the following polynomial f(x)=(x-1)(x-5), find A.the zeros and the multiplicity of each one b. where the graph crosses or touches the x-axis c.the number of turning points d. the end behavior Please show work.

trig

Two airplanes leave a airport at the same time , one going northwest ( bearing 315degrees) at 422 mph and the other going east at 341 mph. How far are the planes after 4 hours ? Please help have no idea of how to solve?

college algebra

Can someone please help me find the x-intercepts and y-intecepts of this equation. I have the radius, and center but I can't seem to get the intercepts. x^2+y^2=16x-18y+145=25 Please show work. Thanks!!

physics

please check these; a container of gas is at pressure of 3.7*10^3 Pa. How much work is done by the gas if its volume expands by 1.6 m. 5.92 * 10^5 A 0.10 kg piece of copper at an initial temperature of 95degC is dropped into 0.20 kg of water contained in a 0.28 kg aluminum ...

physics

please check these; a container of gas is at pressure of 3.7*10^3 Pa. How much work is done by the gas if its volume expands by 1.6 m. 5.92 * 10^5 A 0.10 kg piece of copper at an initial temperature of 95degC is dropped into 0.20 kg of water contained in a 0.28 kg aluminum ...

Algebra 2

Q: (x^2-9/x^2-5x)(5x-x^2/x^2-x-12)(x^2-8x+16/x-4) my answer: -1 How i solved: crossed multiplied 2 of the 3 sets of fractions the multiplied the answer to the remaining one and simplified. Can you check that my work is correct?

Algebra

I've been trying to figure out this equation for over an hour but all the answers I get are wrong. The equation is 0.9=-10I^2+6I . The answer is supposed to be 0.3 and it does work out, but I have tried all different ways to solve for I and nothing seems to work. Could someone...

matn

need help with word problem? half add it Find a number such that when added to numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks for any help (x+2)/(x+11) = 1/2 x is the number you want. Now do the algebra. I will be happy to check your work. thank you

Chemistry-check my work

The equilibrium constant kc for the equation CS2 + 4H2 <--> CH4 +2H2S at 900 C is 27.8. what is the value of kc for the following equation? 1/2CS2 + 2H2 <---> 1/2CH4 +H2S sqr root of 278=5.27?

HELP Please. Geography.

I found some links for the geological history for the appalachian mountains BUT it confuses me. Can you please simplify the formation of the Appalachian mountains?? please? thanks. Basically the mountains were created due to the merging of the continents into Pangea. I know ...

physics problem-check

do i have the following answer right? a tv set is pushed a distance of 2m with a force of 20 N that is in the same direction as the set moves. how much work is done on the set? would it be (2 m)(20 N)= 40 J

Physics ~Work Kinetic Energy~

1.)A ball (m 0.5 kg) starts from rest and has 300 J(joule) of work applied to it. a) what is the initial kinetic energy of the ball? b) what is the final kinetic of the ball? c) what is the final velocity of the ball? 2.)A boy is doing chin-up. If the boy does 450 N of work to...

chemistry

the Ksp of Bi2s3 at room temmperature is 1.60x10-72, what is its solubility in g/100 ml? Please help me with the solution. Our teacher haven't discussed this yet so I have no idea how to solve this.. and if i ever got the answer with your solution. could you please check my ...

MATH CHECK PLEASE

James bought 5 baseball cards at a garage sale for $0.65 each. He sold them to a collector for $2.25 each. what was his profit? A. $3.25 *** B. $8.00 C. $11.25 D. $14.50 Serena has 7/8 yd of fabric. To complete her craft project, she needs 3 times that amount. How many yards ...

Social Studies

What bordered the Gupta Empire to the north? 1. Ganges River 2. India 3. Himalaya*** 4. Bay of Bengal The Hindu Kush are near which river? 1. Ganges 2. Nile 3. Arabian 4. Indus**** Please check my answers Ms.Sue please

Math/Physics(Please check work)

For an experiment on specific heat capacities of metal in physics, I am trying to calculate my percent error but am having some trouble. After collecting my experimental data for c (cal/g) for the object that was used which was aluminum my results are: trial 1 = .19 trial 2...

math

Here's my question: Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the ...

Spanish

Hi there, I need to answer a few questions and I want to make sure I wrote them out correctly. Can you please check my answers? 1. if you were president, what would be your most important decision Si yo fuera presidente, me gustaría bajar los impuestos 2. Do you work hard? S...

ENGLISH

Please check for commas errors, speling and any other grammar error. Please provide the correc answer. The quality in the air in our community interests all of us. We must all work together to keep the air safe for our children. During the past six months we have observed that...

Statistics

Suppose that about 25% of those called will find and excuse (work, poor health, etc) to avoid jury duty. If 12 people are called for jury duty, what is the probablity that 4 or more will not be available to serve on the jury? Please show work Thank you

ENGlish

Please check for errors and correct them. Thanks!!! I received your proposal concerning our collaboration on a play. Your basic plan sound fascinating. I have a cabin on the north shore of Lake Michigan, and if we decide to write the play together I would be happy to offer you...

Chemistry

Can you check if this is correct please? a) How many moles of sodium hydroxide are there in 19.00 cm3 of 0.100 mol dm3? My answer: 0.0019 mol b) How many moles of hydrochloric acid are, there in 25.00 cm3 of the acid solution? My answer: 0.0019 mol c) How many moles of ...

Physics Problem

Could you please check my work? 2. A 2 kg ball of putty moving to the right at 3m/s has a head-on inelastic collision with a 1 kg ball of putty moving to the left at 3m/s. What is the final magnitude and direction of the velocity of the stuck together balls after the collision...

English

Please check my last post as well. I typed a reply. Moreover if I were to come up with an Original and creative essay title. What should it be. For the topic Banning Cellphones while driving. 1. Who is to blame? 2. Blame the cellphone 3. I just wanted to text a friend 4. My ...

Spanish Could someone please check my work? Thank

Mi primera clase que tengo es la orquesta. No es difícil pero el profesor es muy estricto. Mi segunda clase es el álgebra. Es difícil pero es muy importante. Mi tercera clase es la geografiá. Antes mi clase, tengo el almuerzo. Después del almuerzo, tengo mi cuarta clase. ...

College Algebra/pre-calculus

The question is to evaluate each logarithm: My professor wants us to show work. Could you please tell me if I'm on the right track? Thank you!!! 1. log6^(1/36)= -2 2. ln(1/e^4)= 1/e^2 3. log7^1= 0 4. log4^64= ln64/ln4= 3 5. log10^8= ln8/ln10= .9031 6. log3^(radical 3)= I wasn'...

Chemistry

How many moles of compound are present in 17g of Fe2O3? I think I know how to do this, so if someone can show me so I can check my work against it. My answer was .106 moles of Fe2O3.

physics (mechanics)

find the constant force necessary to accelerate a car of mass 1000kg from 15m/s to 20m/s in 10s against resistance of 270N ? pls show work (answer is 770N just in case to check)

fine arts

Describe what work the three brothers from Flanders are known for and how this work was illustrated. i think their most known work is the "Book of Hours" . but i need help in the second part

economics

Does Marx's essay help illuminate any of your own work experiences? Can you relate to his discussion? Why or why not? what if i don't have any work expericence could i just said that or is it talking about another work

Physics

A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20° angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 14 m long. work done by the applied force work ...

English

Could you please check these few things? Thank you, Writeacher. Here is the password connected to the students' class email address. If you want you can check the names of the students who have sent email so far. Could you please ask them all to send a short message so that ...

ENGLISH 11

1. When Thomas Paine writes about reconciliation, he is referring to (1 point) {A.}the southern Colonies staying peacefully connected to the northern Colonies. B.the Colonies staying peacefully connected with Great Britain. C.the Colonists staying peacefully connected to ...

11th garde physics

A grocery cart with a mass of 18 kg is pushed at constant speed along an aisle by a force F = 12 N. The applied force acts at a 20° angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 17 m long. a)work done by the applied force=? b)...

Calculus

let f(x)=x^3(e^-x) Answer using calculus, use graphing calculator only to check work. a) Find the local and global extrema of f. b) Find the intervals where f is increasing/decreasing. c) Find the inflection points of f. d) Find the intervals where f is concave up/down. e) ...

French- another check-over

A group of friends spent the weekend in Paris. Say where they each went, using the passe compose of aller. 1. Nathalie est allee au Louvre. 2. Eric et Jerome sont alles au Musee d'Orsay. 3. Caroline et Claire sont allees au Centre Ponpidou. 4. Vincent est alle au Quartier ...

SCIENCE --- CHECK MY WORK PLS

help pls, check my work asap!?? 1) Which of the following is a chemical change? (1 point) Boiling of water*** Melting a cube of ice Dissolving 10 grams of salt in water Splitting water into hydrogen and oxygen 2) What is the mass of water that results from combining 2.0g of ...

English

Writeacher, thank you very much for giving me advice. Can you please tell me if my sentences are possible? 1) "What about making pizza for dinner”,he said. He suggested making pizza for dinner. 2) “OK. It was me who broke the vase”, she said. She admitted breaking the ...

Check these ASAP please!!!

Please check these: 1.A 2.C 3.C 4.B 5.B ----------------------------------------------------- 1.Which part of speech is the parentheseised word? (Set) the table for me, please. A.verb B.pronoun C.noun D.adjective ---------------------------------------------- 2.Which part of ...

trig

(3 tan^2x-1)(tan^2-3)= 0 can someone please explain how to do this problem and then explain the whole pie thing at the end...like, this is suppose to equal pie/6 b/c it's tan...im soooo confused.....

trig function

Suppose f(x)=cos x - sin x and g(x)=cos x + sin x. Explain why the graph of (fxg)(x) is equivalent to the graph of h(x)=cos x after it has been horizontally compressed by a factor of 1/2. Please help, thank you!

physics

Please see if I am doing this problem right. A mixture of gasoline vapor and air is placed in an engine cylinder. The piston has an area of 7.4 X 10^-3 m^2 and is displaced inward by 7.2 X 10^-2 M. If 9.5 X 10^5 Pa of pressure is placed on the piston, how much work is done ...

English 10 Check

Someone please check! * is the answer I chose. For each of the following pairs of topics select the one that is more focused. 1.)Topic. a.)Why beaches are fun *b.)Why I love Miami Beach 2.)Topic. a.)The wonderful world of vegetables *b.)The health benefits of carrots 3.)Topic...

Powers!

1. Should be 8a15 but I think that is just a typo because the * and 8 are on the same key of the keyboard. 2-4 look ok to me. 5. What you have looks ok to me; however, can't these two terms be multiplied to give 200x8y9 ? Yeah sorry about #1 that's what I had...lol FOr number ...

English

Thank you very much for helping me. Can you please check these last two sentences, please? 1)Pamela’s father believes that a girl’s beauty should be evaluated on the basis of virtue and goodness . It should therefore not be confused with vanity or prettiness. 2) She was so...

socialstudies(CHECK ANSWERS)

PLEASE CHECK MY ANSWERS please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few ...

calc: avg value

Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(b-a))*inegral of a to b for: f(x) dx f ave = (1/(2-0))*integral of 0 to 2 for: x^2 ...

CHEMISTRY

which of the following elements would have the highest melting point?> a)K b)Mg C)Na D)al e)Ca Calcium would have the highest, follwed by aluminum, magnesium, sodium, lowest melting point-potassium. Please double check thank you i found that you are correct with the melting...

Algebra

x-8/x-9-x+1/x+9+x-17/x^2-81 =x^3-81x^2-7x-27/x^2. Can some check this my answer and see if it corre4ct please.

Math 116 algebra please check

Solve -8¡Ü4x-7¡Ü-2 The solution is -1/4,5/4

English

If I post a few essays on here will someone please check them for me?

english

can you please check if this sentence is grammatically correct? "This is rather interesting."

algebra: please check

p/3-3p/8=3 p-3p/8=9 p-3p=72 -316 I am not sure if I did this right. Just guessing.

Math(Please check)

Divide 5x^4 - 3x^2 + 8x + 6 by x^2 + 8 My answer was 5x^2 - 43 with a remainder of 8x - 338. Is this correct?

Math(Please check)

Find the real solutions by factoring. 7x^3 = 2x^2 x^2(x+7) = x(x+2) x=0 x=-7 x=-2 Is this correct?

Math(please check)

1) Differentiate the following: a) y=(x^3+5x)^6 (x^2+1)^7 (6(x^3+5x^)^5 * 3x^2+5) + (7(x^2+1)^6 *2x) * (x^3+5x)^6 b) y=(x+1)^2 / x^2 (2(x+1)*1) * (x^2) - 2x *(x+1)^2 all over (x^2)^2 Are these correct?

Chemistry(Please check)

What is the oxidation number of chromium in K2Cr2O7 so k=+1 (2) = 2 O=-2(7) = -14 2x + 1 +(-14) = 0 2x-12=0 x=6 so Cr is 6 Is this correct?? Thank you!!

algebra

Solve the equation check for extraneous solutions 9[9-8x]=2x+3 please explain

Math

Write the answer in simplest form: 1. 1/3-2/9=1/9; 2. 3/5-1/10=1/2; 3.1/2-1/8=3/8; 4. 2/3-1/6=1/2; 5. 7/12-1/3=1/4; 6. 4/5-2/10=3/5; 7. 7/15-2/5=1/15; 8. 3/4-3/16=9/16; 9. 5/8-1/2=1/8; 10. 1/2-1/5=3/10 please check my answers... Thanks

Ms. Sue

Can you check my answers on basic english makeup exam please

english

Ms sue please check and correct whst I have wriiten

Decimals

What is 0.4536 in expanded form? Please check: 0.4 + 0.05 + 0.003 + 0.0006

Algebra Emergency!!

Find the inverse of f(x)=2x+1/x-1 and please VERIFY(CHECK) Thanks so much

Math? Check Answers Please!!

1. x^16/x^3 x^16/3 x^48 x^19 x^13** 2. 4^4 • 4^6 4^2 4^6** 4^10 4^24 3. 4^4 • 4^44 4^176 4^48 4^40** 4^28 4. 3^4/3^4 Write the value of the expression. 3 0 1 4** 5. 3^3/3^6 1/27** 1/9 9 -27

Math

Given the function rule f(x) = x2 - 5x + 1, what is the output of f(-3)? A. 7 B. -5 C. 25 D. 5 I think its 7, can you check please? Thanks!

French

Please check this sentence. Elle adore voyager en avion.

to writeacher

I think it is C,please check civics on the thread down below.

Math 222

Please check this to see if I am doing it correctly. g^2-6g-55/ g g=0 Because you can not divide by zero

Math

Please check my answer. 11 1/9% of what number is 600? I have 5400.54

math

Could someone please check my answer to this question: Evaluate the expression [(x^n)(y) + (y^n)] ^-2n for x=-2, y=3 and n=-1 =[(x^-1)(y)+(y^-1)]^-2(-1) =[(x^-1)(y)+(y^-1)]^2 =[(x^-2)(y^2)+(y^-2) =y^2/x^2(y^2) =3^2/(-2)^2(3^2) =9/4(9) =9/36 =1/4

math

This is a greater than less than equal to problem, please check if this correct. _ 8/9 = .8

social studies

How do I check my answer on a graph question? someone please help

English

Is Mercutio a foil to the Nurse? I think they are not, but can you please check my answer? Thanks

LOGARITHM

Ln(2x-1)^2=7 solve for x. Please check my answer!!! =17.0577259793 Is this number too big?

Math please check

For the function 2x-x^2 find f(4)-f(2) / (2) I got -8-0/2 so my final answer Is -4

bobpursley, please help me understand

I asked "Show mathematically that to produce an image that is the same size as the object in a concave mirror, the object needs to be at twice the focal length from the mirror." and you answered: "1/o + 1/o=1/f 1/2f + 1/i=1/f 1/i=1/2f i=2f M=di/do= 2f/2f= 1 check my thinking...

Science Please help Ms. Sue!!!

Which of the following does not reduce water pollution? a) cleaning up oil and gasoline spills. b) reducing pollutants such as pesticides and fertilizers. c) increasing the use of gasoline.*** d) properly treating waste water Can you please check my answer?

Physics

Which of the following is true? a. Conserved forces cannot do work b. Work can be performed on an object without moving it c. If the work is done by a conserved force, you do not need to know the path the object took d. To know the total work performed on an object you must ...

TRIG

Can someone please help me? Use identities to find the indicated value for each angle measure. sin θ = 12/13, cos θ > 0 Find cos (2θ).

Math Trig Please Help!!!

Find exact values for all the solutions to the equation cos theta = sqrt 3/2 for -2pi <= theta <= 2pi Theta = Theta = Theta = Theta =

Trig

Verify each trigonimetric equation by substituting identities to match right hand side of the equation to the hand side of the equation. Please help. -tan^2x+sec^2x=1

Chemistry, please help!!!

I have to go to work this weekend so I'm trying to get my homework finished. Could you please help me figure out this question? Calculate the mass of 1.00 mol of each of these substances: a.) silicon dioxide (SiO2) b.) diatomic nitrogen (N2) c.) iron (|||) hydroxide (Fe(OH)3) ...

algebra2

1/3 - 5/6 = 1/X SOLVE 1/3 - 5/6 = 1/X Let's remove the denominators by multiplying by 12X 12X*(1/3) - 12X*(5/6) = 12X*(1/X) Clear the fractions. 4X - 10X = 12 -6X=12 multipy by -1 6X=-12 Divide both sides by 6 6X/6 = -12/6 X = -2 Check my work.

Physics please check repost

The pressure and volume of a gas are changed along a path ABCA in the figure. The vertical divisions on the graph represent 4.0 x 10^5 Pa, and the horizontal divisions represent 4.5 x 10^-3 m3. The diagram is a upright rectangle divided into small squares (8 up and 6 across). ...

Decartes Rule

Can you please check my work? Use Decartes Rule of signs to determine the possible number of postive and negative real zeros for the given function. 1. f(x)=-7x^9+x^5-x^2+6 This is what I did: There are 2 sign changes f(-x)=-7(-x)^9+(-x)^5-(-x)^2+6 There are 2 sign changes So...

how to write a check

this is my second time writing a check, and I know how, but How do i write $1,464.00 in words on a check. Is it "one thousand four hundred sixty four dollars" Is it hundred or hundreds? Do I need to say something about the zero cents?

Chem Home Work Help!

I am a bit confuse with a question from a home work that I need to do by today please help! HW question... 1) A sample of neon gas occupies 8.77 L at 20°C. What is the pressure, in atmospheres, exerted by 1.45 mol of this gas? When you've gotten the answer to this question ...

Chemistry

The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.50 g of naphthalene (C10H8) in 425 g of benzene (Kf of benzene = 4.90°C/m)? I worked this problem for someone just a couple of days ago. delta T = kf m kf = 4.90 m = molality = mols/kg. ...

Calculus derivative

Find the slope and an equation of the tangent line to the graph of the function f at the specified point. f(x)=-1/3x^2+5x+5: (-1, -1/3) Answer: f’(x)=-2/3x + 5 y=-2/3x -1 I re-worked the problem and got f'(x)=5, y=5x+ 14/3 This is from a multiple choice test and this is not ...

English Grammar: Verbs

What are the verbs in these sentences? I just want to check my work. Gasping, Matty called for his gift to come. There was no sense of how to direct it. He became aware, suddenly, that he had been chosen for this. Thanks in advance!

Physics

Hi! Would one of you please check my work? Thanks! ( I used significant digits, by the way) A student throws a 5.00 kg steel shot directly upwards so that it leaves his hand when it is 2.00 m above the ground. If its velocity is 0.15 m/s when it leaves his hand, calculate: 1....

time n work

a and b together can do a piece of work in16 days.b and c can do same work in 32 days.after a worked for 4 days and b for 12 days c takes it up and finishes it in 48 days.in how many days will each of them complete work

Science ~CHECK MY WORK PLEASE~

A scientist is trying to determine the identity of an element. It is highly reactive in water and forms an ionic bond with chlorine. It is also very shiny. The element is likely A. From Group 17 ********** B. From Group 1 C. From Group 15 D. A Noble Gas Which is most likely to...

algebra - check my answer?

A square field has an area of 479² ft What is the approximate length of a side of the field? Give your answer to the nearest foot. Explain A = 479 sq ft 479 = x^2 square root of 479 = square root of x^2 21.89... = x Rounded = 22 ft Is my answer okay? Please check

English

Posted by rfvv on Wednesday, October 27, 2010 at 8:52am. 1. Do you do any volunteer work? How about your friends? 2. Yes, I do. They do volunteer work, too. 3. No, I don't. They don't do volunteer work, either. (Are the answers grammatical?) 4. Do you do any volunteer work? 5...

physics- energy and work

To push a 33.0-kg crate up a frictionless incline angled at 27.0° to the horizontal, a worker exerts a force of 388 N parallel to the incline. The crate moves a distance of 4.10 m. What work is done on the crate by the worker? What work is done on the crate by the weight of ...

Algebra

Can you please help me with these Algebra word problems? Complete the following word problems. 1. Tell whether the table represents inverse variation. If so, write the inverse variation equation and solve for y when x = 4. Show work that supports your conclusions. Table: ...

Spanish

Can someone please check my work? I was in Grade One. We went to the pumpkin patch. I got a really big pumpkin. I tripped while carrying it. I bit into the pumpkin. And lost one of my front teeth. Fui en primer curso. Fuimos al terreno de calabaza. Obtuve una calabaza grande. ...

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