Trig check my work please?

87,713 results, page 7


2 vectors act on a bolt. vector 1(1200/70 degrees) vector 2(900/205 degrees) then E = ? must show work!


Evaluate the following expression: sin(cos^-1(12/13)) tan(sin^-1(3/5)) I do not know what the inverse values would would I work through this?

Math estimate with benchmark

Could you please check ifI have these right? i need to estimate using benchmarks (show work) 1/8 + 3/5 i got: 0 + 1/2 = 1/2 _________________ 4 3/4 - 1 2/3 i got: 4 +1 = 5 - 1 +1 = 2 so 5 - 2 = 3 _____________________ 43 7/8 divide 10 1/3 43 + 1 = 44 10 +0 = 10 so 44 divide by...


An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the plane is 600 mi/hr. Find the rate at which the angle of elevation is changing when the angle is 30 degrees. I found the answer to be 60 radians/hr by taking the derivative of...

inverse trig HELP PLEASE!!

Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.

Math- fraction equations

How would I solve this equation? d-1 = -1 1 ____ ___ 4 2 (d-1) divided by 4 = -1 and 1/2 Thanks, Ok, I'll set up your problem this way: (d-1)/4 = -1 1/2 -1 1/2 is the same as -3/2. Therefore: (d-1)/4 = -3/2 Multiply each fraction by a common denominator, which is 4: 4 [ (d-1)/...

Algebra (Check My Work)

(7a)^-2 1/(7a^2) 1/49a^2


Plz check my work 8*8=64 9*9=81 7*8=56 7/21=3 8/32=32


What graph is traced by the equation (x, y) = (5sin 12t , 6−5 cos 12t)?Think of another equation that will produce the same graph. Use your calculator to check.


hey. show 2sin(pi/14) is a solution to x^3-x^2-2x+1=0 and hint: let x=2sinu and sin(7u)=1 i can't seem to solve when i sub in the x value. how can i relate this to the seventh root of inifinity. i multiplu by sin^4 but they it just doesnt work.


Can you please check the grammar in the following sentences? They are all about summer holidays. 1) During my summer holiday I got some work experience as a waitress in a guesthouse in the mountains. I just had to serve food at meals. 2) I worked full time for a month and I ...


A-the dictionary definition of a word B-making assertions about a group that are too broad C-parts of a presentation that augment the words D-rhetorical devices that rely on faulty reasoning E- the emotional associations a work invokes audiovisual(A) connation(E) denotation(D...

Can someone check my answer please

Can someone check this for me? Suppose that the number of cars, C, on 1st Avenue in a city over a period of time t, in months, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of cars driven on 1st Avenue can be ...

cultural diversity

1. Young children's functional use of language within a work context is often observed in: A. Mainstream industrialized societies. B. Triadic interactions in Mexican-American groups. C. Rural Appalachian Black communities. D. Native American cultures............ I choose D...

chem/plz/check work studying for a final

23. A 32.3 L sample of a gas at 305oC and 1.20 atm is to be cooled at constant pressure until its volume becomes 28.4L. What will be the new gas temperature? Tf = Vf*Ti/Vi Tf =28.4L x (305+273)K / 32.3L = (28.4)(578)K / 32.3 = 16415.2/32.3 Tf = 508K I got this one wrong on a ...

accounting/check please

(hey i asked for help with accounting with a question i saw the same question at this site but when i click it it doesnt work is there anyway you can check it for me then what they posted there you can copy and post it here for me).my question was Tracy Migre, a certified ...

English please check my answer

Please check my answer thank you. Gastrectomy is listed as the principal procedure on the surgical report. You know that (-ectomy) means excision or surgical removal. What part of the medical word does "ectomy " represent ? A. Root B. Suffix C. Prefix D. Combining form My ...

Physics 11

Can someone explain what work total is? In my lessons it said Work total is the sum of all work & showed an example of different work being added together. An assignment after that however made me think that may not be the case... Do I need to add the work in some cases or is ...


will someone please check my work? find two sets of parametric equations for the given rectangular equation x+y^2=4 x=-y^2+4 y=-t^2 x=-t^2+4 x=-t^3 y=-t^3+4 Find a polar equation of an ellipse with its focus at the pole an eccentricity of e=1/4 and directrix at y=4. answer...

Algebra2 ( Check)

Will you please check my work for me. 1)The equation of a parabola is shown. y=1/14X^2. What are the coordinates of the focus? (0,-3.5) <---- (0,-4) (0,7) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom on his ...

math 115

could someone check my work please? 1.List the factors of each of the following numbers.66 1,11,6 2.Use the following list of numbers for exercises 13 and 14. 0, 1, 15, 19, 23, 31, 49, 55, 59, 87, 91, 97, 103, 105 15,55,105 answer 3.1,55, 1,57, 1,58,1,59,1,61,


Rewrite the following sentence to make it more concise: The referendum was held by the government in the month of August. The Government held a referendum in the August. Please check my work.

Science: Please check answer

2. Once your rocket reaches space, the captain adjusts the speed. Your captain goes from 24,000 km/hr to 17,000 km/hr over 90 seconds. What is your acceleration? Beginning speed= 17,000km/hr Ending speed= 24,000 km/hr Time it took= 90/sec 17000-24000= -7000/90= -77.778km/hr ...

language please check my work

In 2000 an experimental robot performed operations on the damaged valves of ten patient's hearts. in this true: -robot is a noun -performed is a verb -damaged is a noun


I left out a few sentences. Can you please check them? 1)England turned from an agricultural into an industrialized (not industrial) country. 2)The Indutrial Revolution caused an improvement in life (or in the living conditions). 3) The Luddites organized riots in order to ...


A salesperson makes a flat fee of $20 per day plus $8per hour. Which equation or inequality can be used to find h, the number of hours the salesperson will have to work to make more than $60 for a day's work? F. 20h + 8 = 80 G. 8h + 20 < 60 H. 8h + 20 = 60 J. 8h + 20 > ...

Math (Trig)

I have a unit circle graph like the one at the top of a website (do a google search for 'unit circle trig functions' and click the second link, since I can't post links). I need to label the sine, cosine, tangent, secant, cosecant, and cotangent. I found several pictures that ...

For Dr.Bob222 (chem work)

What is the pH of a solution of 120 ml 0.15M acetic acid to which we add 30mL 0.2M NaOH? CAN YOU CHECK MY WORK PLEASE? 0.15 mol/L * 0.12 L = 0.018 mol acetic acid 0.2 mol/L * 0.03 L = 0.006 mol NaOH 0.018 - 0.006 = 0.012 mol of acetic acid in excess pH = pKa + log (acid/base) ...


solve to four decimals places 5.0118 sinx - 3.1105=0 :for all real x values I will be happy to critique your work. Solve for sinx, then arcsinx


If sin = 2/3 and is a second quadrant angle, determine the exact value of sec^2 could be a. 5/9 b. root5/3 c. 9/4 d. 9/5 Please help.......


what is the smallest value of k that would make the roots of the equation x^2-2x-k imaginary? please help, no idea how to do this.


(sec^2x-1)(csc^2x-1)=1 prove the following identity ive been stuck on this for hours please help


Helpp please State the domain and range of each of the following functions: 1. f(x)=1/(x+3) 2. g(x)=√x+6 3. h(x)=x^3+2x+5


Help Please For the function defined by: f(x)= (x^2,x≤1) (2x+1,x>1) Define f(0). and also how would i graph f(x)?


Help me please. List all possible rational zeros for the polynomial function. p(x)=3x^3-2x^2-5x-2


To cite sources correctly in APA, a research-based paper must contain both in-text citations and a references page that contains full citations of each source mentioned in the paper. True False I say True. Please check my work.

English Grammar check

Can you please check this for grammar thank you!! Thank you, for all that you have done and continue to do for me.It means the world to me, that you haven't given up on trying to help me. More importantly, thank you for always believing in me.

U.S. History

please check this answer 1. A major goal of the encomienda system was to a. force Native Americans to work for Spanish colonist b. drive Native Europeans off their land c. help Europeans adapt to Native American culture d. prevent the development of social classes in the ...

History - please check my answers

Which of the following of protections under the establishment clause of the first amendment? Select 2. -A father objects to his sons school including a daily prayer <<< -an Amish family objects to a law requiring schooling until age 16 -restrictions are placed on the ...


how would you simplify this equation: y = (x+3)/[(4-sqrt(16+h))] please help me! you have three variables. I am not certain "simplify" is an appropriate term here. ohhhh it was my mistake. I meant: y = h/[(4-sqrt(16+h))] y = h/[(4-sqrt(16+h))] rationalize the denominator.. y...

Social Studies

1. You are a migrant worker from India who has come to Kuwait. In which industry are you most likely to seek work? A. Fishing B. Oil** C. Farming D. Livestock B? 2. Which of the following has the greatest impact on human settlement in Iraq? A. Oil resources** B. Mountain ...

graphing trig functions

for graphing basic trig functions such as y=2sinx or y=1/3cosx, how do you know what the points are to graph with out using a calculator?

7th grade math please check ASAP please!

Tom buys a shirt for $22.00 plus 7% sales tax. His cousin buys a shirt for $18.00 plus 4% sales tax. a. How much do Tom and his cousin pay for the shirts? Show your work. b. Who spent more on tax? (3 points) Is my answer correct: B: Tom's cousin **I already know A, thanks for ...

Math - hw check

The admission fee for student is $8 and the admission fee for Adult is $15. In one hour, 12 adults and students enter the museum and a Total of $131 in admission was paid. Write a linear system to model this problem and solve this problem graphically. Check you answer by ...


Can you check my work? (4+16)- 20+7= The answer is either 7 or -7?


can you solve this? I need to check my work. 2(x-1)^2=50

Algebre=Please check

Could someone check my answers for these two questions, please? What is the equation of the line which includes points (2,6) and (0,0) y = -3x+1 y = -3x y=3x ( my answer) y = 3x+1 Equation of line with slope m = -3 and including point (5,) is y = - 3x+20 I think its true when ...


In ancient times, most slaves were prisoners of war. You may be able to find a part in your Bible that says that the Israelites were marched to Babylon. Please check your Bible, because it may be what your teacher expects. Who were marched to Babylon to work as slaves?


Can someone please check my work for me. Q: Plot the graph of the equations 2x - 3y = 5 and 4x - 6y = 21 and interpret the result. A: 6(2x ¨C 3y = 5) = 12x ¨C 18y = 30 3(4x - 6y = 21) = 12x - 18y = 63 12x ¨C 18y = 30 + 12x - 18y = 63 0 ¡Ù 93

Algebra-Please check-I'm desperate

Posted by JoniAnne on Wednesday, October 20, 2010 at 11:50am. Please check- Solve 3 > sqrt(3x) 3x >=o x>=0/3 x>=0 square both sides and you have 3x < 3^2 3x,9 x<9/3 x<3 answer is 0<=x<3 correct or not? 3(cube) sqrt(2-5) = 3 cube both sides = 2-5x = ...

alg 1 college

can you guys please help me wwith a math problem, its asking to solve this equatoion, sqare root5x-4=3x-18. to fkire off first 5x-4= 3x-18 squared. foil thatand you are looking AT 9x squared -54x -54x+324/ add the -54 to 108x.then shoot the 5x to to the 108x and subbtract 5x ...


1. I have a staff who works for me. 2. I have a staff who work for me. 3. I have a staff of one who works for me. 4. I have a staff of ten who work for me. 5. I have ten staff who work for me. 6. I have ten staffs who works for me. 7. I have ten step members who work for me...


a skydiver is subject to two forces: gravity and air resistance. Falling vertically, she reaches a constant terminal speed at some time after jumping from the plane. Since she is moving at a constant velocity from that time until her chute opens, we conclude from the work ...

Social Studies (please check Ms. Sue)

Please check this. Thanks! 1. How did World War 1 benefit South Carolina's economy the most? a. The government improved transportation systems.*** b. The government opened military bases for training. c. The people of South Carolina bought Liberty Bonds. d. The people planted ...


1. Using the following system of equations : 4x +2x = 6 2x + y= 3 A: Find the solution(s) algebraically showing all work (4 pts) B: State whether it is independent consistent, dependent consistent, or inconsistent. (2pts) C: Demonstrate how to check the systems of solutions, ...


Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 16x on the interval [−1, 1]. If so, find the x-coordinates of the point(s) guaranteed to exist by the theorem. f(a)=15 f(b)=-15 f'(x)=3x^2-16 f'(c)=-15 I am now lost from here, I do not ...


What is the intergral of: 2x/[(x+1)^3] dx Can someone show me how to work to work it out please? Thanks!!

I need to know how to work this Maths Problem

-2√62+38, how do I work it, please help asap!!

Precalculus(Please check and help)

Find the Equation. Please check the answers and help. Thanks! 1.) Ellipse with center (0,0), foci on x-axis; x intercepts; major axis of length 12, minor acis of length 8. I got : x^2/144 + y^2/64 = 1 2.) A parabola with vertex (0, 0) and focus (5, 0). I got : y^2 = 20x 3.) ...

math (trig)

i have some problems doing trig the first one is: Show that cos(x/2) sin(3x/2) = ½(sinx + sin2x) i know that you are supposed to substitute all those trig function things in it but i kind of forgot how to the only that i can see substituting in is the double angle one for ...


The value of 12 is obtained by multiplying p% by A.12 B.12/p C.p/12 D.1200/p E.100p/12 Is there any work for this?, if so please show work.

Intro to Physics

A sample of an unknown material appears to weigh 295 N in air and 165 N when immersed in alcohol of specific gravity 0.700. (a) What is the volume of the material? ___________m^3 (b) What is the density of the material? ____________ kg/m3 I am getting the wrong answer. Can you...


Find the exact value of sinx/2 if cosx = 2/3 and 270 < x < 360. A)1/3 B)-1/3 C)sqrt 6/6 D)-sqrt 6/6 C, since I KNOW cosx is always positive but I don't know the work involved. I know the half angle formula

Ms.Susy Please Help With Time!!!!!!

My sub teacher today gave us a time problem on our homework. We haven't worked with time yet so I'm not quite sure I got it right: Ed started work at 8:45 AM. He stopped for lunch at 12:00 PM and went back to work at 12:45 PM. He quit for the day at 6:15 PM. How long did Ed ...


A spring with a spring constant of 22N/m is initally compressed by 2.3cm. How much work is required to compress the spring an additional 1.7 cm? I can't find information in my book about compression; only work and exertion. Please help and provide all steps for work. Thank you...


Can you please check my work? You have helped other students I know. Thank you:) Multiply -7(2a2 -4) = -14a2 + 28 Multiply 0.5(a + b -5) = 0.5a + 0.5b - 2.5 Factor bx - by + bz = b(x - y + z) Combine like terms (simplify) 12x + 4 - 11y - 6x - 9 - y = 6x - 12y - 5 Evaluate the ...

Chemistry- please check my work

Question: When 1.97 grams of Pb(OH)2(s) is added to 1.00 liter of pure water at 25 C a saturated solution (some solid is present) is formed that has a pH of 8.97. Compute the Ksp value for Pb(OH)2 using the data. [OH]= 9.334e-6 and the [Pb^+2]= 9.334e-6/2= 4.667e-6. So the ksp...


out of growth of schools, racial discrimination, and education for immigrants, which educational development do you think was most important? Explain. Please remember that we are here to help you learn to do your own work, but not to do it for you. Once you have written your ...


Please explain inverse functions. i.e. find angle if Sin x = 2.3 divided by 8.15. Answer 16.30 degrees. How did they do that??? Tks

trig. identities

sin2x+sin2y=2sin(x+y)cos(x-y) Please helpp mee!! thank you sooo much really!!


solve 6=e^0.2t Round your answer to the nearest hundredth Someone please help me - I don't understand this problem at all!


Go over this with me please, I forgot how to do it. Solve the polynomial equation. 15x^3-119x^2-10x+16=0


how does this work? (Sin2x+cos2x+2sin²x)/(sinx+cosx) = (sinx+cosx

algebra 1

in the equation 5x+y=-1,m= I will be happy to critique your work on this. Please note that we don't do students' homework for them. Once YOU have come up with attempts to answer YOUR questions, please re-post and let us know what you think. Then someone here will be happy to ...


Simplify the expression. (6x^-2)^2(0.5x)^4. Show your work. I know that the answer is 9x^2-+4 I just need help showing the work. PLEASE HELP!


4t+14=6t/5+7 Please help me work out this problem and show your work

third grade math

how do you check addition problems by adding up? Let's use this addition problem as an example. 21 35 ___ First you add 1 + 5. To check your work, add up, 5 + 1. If you have a column of numbers and you go down each column to add them together, that's normal, right? 36 95 15 ...


Can some one please check my work? Thanks! From the words below supply the words needed to complete the sentences. occult; serene; partisans; fervor; fledgling; blasphemous 1. Even though he was a FLEDGLING writer, his work suggested he was a professional. Once in a FERVOR, he...

Honors Chemistry

Can someone check my work please? Thanks :)) 2. Write the formulas for the compounds formed between the following: g. Cu+2 and NO3- (the +2 and - are superscripts, while the 3 is a subscript) ===> I got Cu(NO3)2. h. NH4 and SO4(2-) (the two 4's are subscripts, and the (2-) ...

Math (Check 2 answers please)

1. What is the value of b in the equation b + 8 = 13? A. 5**** B. 8 C. 13 D. 21 2. The steps below show the incomplete solution to find the value of x for the equation 7x − 3x − 4 = −1 + 21: Step 1: 7x − 3x − 4 = −1 + 21 Step 2: 7x − 3x − 4 = 20 Step 3: 4x − ...

Language Arts

1)In all together now, Barbara Jordan's main purpose is to a)persuade readers that a tolerant society is best created by working on a small scale.*** b)inform readers of the civil rights movement in the United States. c)praise the work of the leaders of the civil rights ...

Trig Identities

Please help...I'm not understanding trig identities and how to manipulate and express these two problems in their associated functions. Thanks a)Express as a function of cos (theta) 2 sin^2(theta) - 1 b)Express as a function of sin (theta) or cos (theta) tan^2(theta) - 2 sec(...


can someone check my work? x^2 = 22 xãx-22 if x^2 is 22, then x is +- sqrt 22

Check Work (Math)

1) Find the difference 3-(4-7) my answear 6


Does anyone on here use Writepoint to check your work??

Trig--check answer

Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1-cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2???


use trig identities to rewrite: (1/(1-cos4v))-(1/(1+cos4v))


Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)


Prove the trig identity cos(4x)=2-sec^2(2x)/sec^2(2x)


prove the trig identity cos(4x) = 2-sec^2(2x)/sec^2(2x)

English (please check my work !)

Mr. Williams is the teacher (who, whom) went to such great trouble to help the students. *who 2. Would Agnes like to swim at Holden Pond with Ellie and (I, Me)? *I 3. What do you think about (his, him) being chosen as class president? *him 4. Introduce the guests with (whom/...


A costume designer made 10 costumes that each used 5.8 yards of fabric. If she had 238.2 yards of fabric to start with, about how much fabric does the costume designer have left? Write an equation and estimate the amount of fabric left. A customer went to a garden shop and ...


I need to find the volume of a cylinder. Use 3.14 for pi...I think the answer is 24,501.42 m^2...the picture shown is a cylinder with a diameter of 34m and a heigth of 27m I know how to work these problems out and I got 24,501.42m^2 but the computer is giving me an answer of ...

please check my answer

Please check my answer thanks :) What is the simple interest on $14,500 loan at 9% interest for 5 years Interest = $14,500 x 0.9% = 1305 x 5 = 6525

@Help plzz check asap

I've removed the entire test you posted -- without indicating your answers! Please post only those questions you have serious doubts about along with what YOU THINK the answer is for each. Then when someone comes online who has read that work, he/she may be able to help. Do ...

please check over my work

A 2.5 kg stone is released from rest and falls toward earth. After 4s, the magnitude of its momentum is: My work: J=F*t =(F *t)= 24.5N * 4s F= 2.5 *9.81= 24.5 J=P P= 98kg m/s A sphere X, of mass 2kg, is moving to the right at 10m/s. Sphere Y, of mass 4 kg is moving to the left...


I'm going to do this on my own, but I would like to check mine against yours - give me today to work on it and I will be able to compare. List all possible rational zeros for the polynomial find all real zeros and factor completely. show work f(x)=3x^4-29x^3+89x^2-75x-36 thank...


Can some one please check my work? Thanks! From the words below supply the words needed to complete the sentences. occult; serene; partisans; fervor; fledgling; blasphemous 1. Even though he was a FLEDGLING writer, his work suggested he was a professional. Once in a FERVOR, he...


am i correct on this? question: solve and check square of 5x+6 is equal to x work and answer: square each side 5x+6=x^2 subtract 5x-6 on both sides 0=x^2-5x-6 (x+1)(x-6) x+1=0 subtract -1 on each side x= -1 is a reject x-6=0 add 6 on each side x=6 and 6 was my answer and the ...


A heater cansupply 98000J an hour. If a lot of ice is already at 0 degrees, how much ice can be turned to water? check my work please: Q/l=m 98000J/kg / 3.35 * 10^5J = 029kg of ice can be turned to water


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