Trig check my work please?
42,204 results, page 8

math
Janice conducted a survey at the local calculator factory. She discovered that 10% of every 80 calculators did not work. Using this survey, what kind of predictions can she make about the next 400 calculators? anot enough information b40 will not work c5 will not work d8 ... 
AP Chemistry
Could you please check my work and let me know if my answer is correct? I don't have a solutions guide and I want to make sure I'm really comprehending the material. Calculate the # of grams of barium flouride that will dissolve in 2.50 L of pure water at 25 degrees C. Assume ... 
physics
The internal energy of a system changes because the system gains 180 J of heat and performs 338 J of work. In returning to its initial state, the system loses 111 J of heat. During this return process, what work is involved? If the work is done by the system, then give the ... 
Math
The average of X numbers is 15. If the sum of the X numbers is 90, what is the value of X? A)5, B)6, C)8, D)15 or E)75 What is the correct answer and how do you set up the equation? The answer is b)6 because if there are 15 average numbers and the sum is 90 you just multiply 6... 
GOVERNMENT HELP
Where did classical liberalism start? I know it started in Europe but was it Britain or France or both? I merely want to check my work. Bob Pursley do not answer this since you are so rude by suggesting that I want you to do my homework for me. http://en.wikipedia.org/wiki/... 
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) 
Biology Question
A cell is lacking in its supply of amino acids. Which of the following will occur? A mRNA will not be formed because enzymes may not be present. B The ribosomes will not work properly because there will be no proteins. C tRNA may not be able to fulfill its job. D all of ... 
Chemistry
Does anyone know where I can get an image of the valence bond model for maleic acid? ie. showing the pi and sigma bonds and indicating the hybridization (sp2, sp3.. ) OR could someone describe these things to me? I'm just trying to check my work and make sure I didn't miss ... 
intermediate algebra
Divide and check: show all work (t4 − 2t2 + 4t − 5) ÷ (t2 − 3) 
PLease Help Me IN Math
Problem: 25x^2 6  *  12 5x What I Got: 5x  2 *Please Check My Work And Tell Me If I am Correct or wrong.If I am wrong please help me as much as possible.Thank you~ Wrong. When are you going to factor the 25x^2 ? The 5x then will divide out. oh...so then will ... 
algebra (check my work)
60% of what number is 24? a/w = p/100 24/w = 60/100 24 * 100 = 60* w 2400 / 60 = 60w / 60 w = 40 am i correct? 
English
Can someone please proofread this essay to check for any improvements that need to be made such as possible grammar suggestions Thanks Attendance demands punctuality meaning that not only should you make it a priority to show up but to always be on time. You have to make sure ... 
English
Imagine what will happen in the future world and write down sentences related to the future world. 1. We will go to Mars. 2. We will make robots clean the house. 3. We will not get sick. 4. We will fly in the air. 5. We will go to the USA in 10 minutes from here. 6. We won't ... 
math
A can finish a work in 24 days , B in 9 days and C in 12 days. B and C start the work but are forced to leave after 3 days.The remaining work was done by A in ? any idea please i used work rate concept but i did not reach to the answer 
Business Math
Check My Work (7 remaining) What payment should be made on an invoice in the amount of $3,400 dated August 7 if the terms of sale are 3/15, 2/30, n/45 and the bill is paid on ... a. ... August 19? $ b. ... September 3? $ 
Social Studies 8R  HW. Qs. Check
Why did many freedmen and poor whites become sharecroppers? Answer  Some large planters had held onto their land and wealth through the war. Now they had land but no slaves to work it. am i correct??????????? 
precalculus
can you check my work? In exercises 1012, sketch the curve represented by the parametric equations. Then eliminate and write the corresponding rectangular equation whose graph represents the curve. 10. x=t26 y=1/2t1 answer: t=2y6= (2y+2)26 =4y2+8y2 
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 
math
what is the difference between translation , rotation, relections, and dilation in 8 grade work In 8th grade talk, I recommend you check the examples in your book. OR, if you put your definitions here, I can critique them. 
English
Can you please check these few sentences I'm not sure of. Thank you for all. 1)My work day starts at 7.55 a.m. I nearly always have to drive my child to school. It usually takes me ten minutes to get there (OR: It's a tenminute drive.) After that I drive to work. 2)As soon as... 
Chemistry Dr. Bob
Reacting 1 L of H2(g) with 1 L C2H2(g) (both at STP) results in the formation of 1 L of C2H4(g) if the reaction is maintained at the same conditions (STP) and goes to completion. If this reaction produced 6.3 kJ of heat (absorbed by the surroundings), calculate: a) the PV work... 
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 Check please
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) (0,3.5) 2)The equation x2 + (y + 3)2 = 36 models the boundary on a local map for which Darren can hear his friend Tom ... 
precalculus
can you check my work? 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: √(x^2 + y^2) / (y  4) = 1/4 4√(x^2 + y^2) = y  4 4r = r sin θ  4 (sin θ  4) r = 4 r = 4/(sin θ  4) 
trig
The average depth of water at the end of a dock is 6 ft. This varies 2 ft in both directions with the ride. Suppose there is a high tide at 4 am. If the tide goes from low to high every 6 hours, write a cosine function describing the depth of the water as a function of time ... 
english
Athe dictionary definition of a word Bmaking assertions about a group that are too broad Cparts of a presentation that augment the words Drhetorical devices that rely on faulty reasoning E the emotional associations a work invokes audiovisual(A) connation(E) denotation(D... 
just checking
My method was correct right?, sorry to post again I just wanted to double check that I had the setup right: A 8000N car is traveling 12 m/s along a horizntal road when the brakes are applied. The car skids to a stop in 4.0s. How much kinetic energy does the car have. my work: ... 
Physicscheck answer please (multiple choice)
1. A 2.5 kg mass at rest on a horizontal surface is acted upon by an applied horizontal force of 150 N. A frictional force of 100 N acts on the mass. How much work is done on the mass? my answer: would the work be 0? 2. When a rock is thrown straight up in the air, after it ... 
math
A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished? (explaination please) 
5th grade math word problems
bob started each work on the hour. one day he decided to start work twenty minutes early. he started work when his digital watch had consecutive numbers. what time did he start work 
English
A theme is best described as? A. A moral lesson presented in a work of literature B. The central idea or insight about life revealed in a literary work C. The subject of a work of literature D. A series of related events in a literary work I picked B but it siad it was wrong 
Physics
Starting from rest, a 5kg block slides 2.5 m down a rough 30o incline in 2 seconds. Find a) the work done by the force of gravity. b) the work done by friction. c) the work done by the normal force Help ASAP please!! Show work step by step only with the equation 
math
A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/ 
About work
Hello am new at this work at home but i never find any good site i can work with pls help am from nigeria send me link of good work at home that can suit me nothing is small to earn. thanks 
physics
A mover pushes a couch a distance of 4 m to the top of a ramp into the back of a truck using 500 N of force. A) What is the work input of the mover? B) What is the mover’s power if the task takes 10s? C) If the mass of the couch is 100 kg and the back of the truck is 1.5 m ... 
chemistry calorimetry
how can i get the mass of a liquid when i'm given the heat enrgy that is added, and the specific heat of the liquid to which is added, plus the increase in temperature. q = mass x specific heat x (Tf  Ti) q is heat in Joules. mass in grams specific heat in J/g*C Tf = final T ... 
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 ... 
English
1. You need to check the time. (What kinds of time should be checked acording to the sentence? Does ' check the time' have a lot of meaning according to the context? Does it also mean "Check what time it is now.?" 
English
Thank you very much for encouraging me to go on with my work! Here are some more sentences I'd like you to check. Can I start my exercise with: Fill in the blanks with an appropriate preposition. Complete the sentences using an appropriate preposition. 1) He is a trainer now ... 
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/... 
Physics Please check my answer
How much work is done by the centripetal force (in this case, the friction between the tires and the road) on a 1200 kg car moving on a circular track of radius 50 meters at a constant speed of 31.4 m/s? A. 7.4 • 10^6 J B. 19.7 J < C. 2136.7 J D. 117,600 J E. 0 J 
improving your writing
This was always my worst subject. Can you please check the changes I made? Thank you very much for your time. For the past three months, workrelated problems have occurred in the office and need to be addressed. Before Jessica Hilo’s medical leave, the workload was equally ... 
trig!!
Sin(Xy)sin(x+y)=sin^2 x  sin^2 y work on one side only...so i worked on the right =(sinxsiny)(sinx+siny) does that equal sin(xy)sin(x+y)??? help! 
Trig
Sin(Xy)sin(x+y)=sin^2 x  sin^2 y work on one side only...so i worked on the right =(sinxsiny)(sinx+siny) does that equal sin(xy)sin(x+y)??? help! 
mathvolume
I'm confused with how to solve this problem, so help would be great! The volume of any spherical balloon can be found by using the formula V= 4/3 pi r^3. Write an equation for r in terms of V and pi 4/3*pi*r3 = V Multiply by 3 3*(4/3)*pi*r3 = 3*V 4*pi*r3 = 3V r3 = 3V/(4*pi) r... 
math 1 question  pls check my work!
ok, did i do this right? (is this the right answer) Find the lateral area for the given cylinder. Use 3.14 for and round to the nearest whole number. (1 point) 144 yd^2 288 yd^2 2,712 yd^2 904 yd^2 i think its D, 904?? 
English
please check my answer thanks :) What is this sentence missing and where ? One day my dad and his brother stop me if you've heard this story started on what they thought would be an uneventful drive to work. I thinks it's missing commas 
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 reworked the problem and got f'(x)=5, y=5x+ 14/3 This is from a multiple choice test and this is not ... 
Chemistrycheck 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? 
alalgebra 8th grade check my work
At an amusement park, Tami chooses one each from the following options: 3 movies, 20 rides, 6 snack shops. Find the number of possible outcomes. Is it 3 x 20 x 6 = 360 possible outcomes? thanks!!!!! 
Physics Check My Work Please
A 8 kg block is moving with an initial speed of 6 m/s on a rough horizontal surface. If the force is 12 N, approximately how far does the block travel before it stops? *I have: V^2=Vi^2+2ax 0=(6 m/s)^2 + 2(9.8 m/s^2)(x) 36 m^2/s^2 = 19.6 m/s^2(x) x = 1.83 m. *Is this ... 
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... 
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 
Maths
I am trying to work out the area and perimeter of an equilateral triangle but am only given the altitude (12cm), i have tried everything from c^2 = a^2 + b^2 to b x h / 2 and nothing seems to work. How do i work this out with only one measurement? 
Informal Logic
<21{3[2(08)44]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in this ... 
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
h t t p : / / i m g 2 0 5 . i m a g e s h a c k . u s / i / c a p t u r e b b . j p g / i am stuck on part c how do i find work with out using the spring constant work equals force parallel times displacement at which the force is acted during... Work done by spring = .5 kx^2 ... 
chem
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the work associated with this change? A. Work is negative and is done to the system. B. Work is negative and is done by the system. C. Work is positive ... 
History
Why did Nicholas Copernicus wait to publish his works on his deathbed? His work on the three laws of motion contradicted the Lutheran Church. His work on heliocentric theory went against Catholic doctrine and beliefs. His work included the dissection of cadavers, which was ... 
biology
Why did Nicholas Copernicus wait to publish his works on his deathbed? His work on the three laws of motion contradicted the Lutheran Church. His work on heliocentric theory went against Catholic doctrine and beliefs. His work included the dissection of cadavers, which was ... 
physics
if a particle has work of 8J and doubles its speed. how much work it has done? Can we still determine work in this problem without mass 
trig
prove the following trig identity: a) sin(pi/6 + x) + sin (pi/3 + x) + sin (pi/2 + x) = ((sqrt3) +1)/2 (sinx +(sqrt3)cosx) b) sin(pi/4 + x) + sin(pi/4  4)= (sqrt2)cosx 
psy
<22{3[2(08)]}> Surveys show that people who use calorie information to decide which foods to eat consume on average 100 calories less than they would if they didn’t check calorie information before eating. Strangely though, people who use calorie information in this ... 
English
A typical researchbased paper contains an introduction with a thesis, a body in which the paragraphs begin with topic sentences, a conclusion, and a references page. True False I say True. Please check my work. 
check geo
in which fields do europeans work today? A)heavy duty and mining B)farming and heavy industry c)shipping and transportation d)manufactoring, service and technology industries and agriculture my chioce d 
Health care
Please check my anser thank you :) You work in a doctor's office and have just submitted several claims to a commerical insurance company. Your office will probably be reimbursed based on what? My answer is traditional feefor service system. 
Language Art (Please Check)
1.C which of the following is a simple sentence? A.she lit a lantern and raced toward the bridge B.the lantern did not work,so she tossed it aside C.buck and minnie were the first horses out of the barn D.she was startled by a sound,which turned out to be thunder 
Trig
The angle 2x lies in the fourth quadrant such that cos2x=8/17. 1.Which quadrant contains angle x? 2. Determine an exact value for cosx 3. What is the measure of x in radians?  I know that quadrant 4 has 2x in it, so quadrant _____ has to have x ? for part 2, ... 
Algebra
I got a couple I want to check my work : Both are Solve using the quadratic formula : 1) x^23x=7x2 x^23x7x+2=7x7x2+2 x^210x+2=0 x = 10 + sqrt10^2  4(1)(2) / 2(1) x = 10 + sqrt100  8 / 2 x = 10 + sqrt92 / 2 x = 10 + 2sqrt23 /2 x = 5 + sqrt23 x = 5 + sqrt23 and x... 
algebra
please check and correct thanks Problem: solve and check the inequality if possible 4F+8< 12 positive: negative: 4F+8 < 12 4F + 8 < 12 4F + 8 8 < 12  8 4F +88 < 128 4F < 4 4F< 20 F < 1 F< 5 solutions 1 and 5 or 5 < F < 1 check ... 
chemistry
how many grams of CaCl2 need to be dssolved in 100g of water to prepare a solution which freezes at 2.0 degrees? Work this problem just like the previous one EXCEPT there is another part to the formula. Delta T = i*Kf *m i is the number of particles and CaCl2 will have 3. In ... 
Trig
I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin1.5 3. cos 8x  cos 2x as a product Answer 2sin5x... 
trig
I have these sum and product property problems and I just want to make sure my work is right. Write equations expressing 1. cos 37degrees cos99degrees as a sum Answer: sin136+(62) 2. sin4+sin7 as a product Answer: 2sin5.5 sin1.5 3. cos 8x  cos 2x as a product Answer 2sin5x... 
math
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of assembly work. Each Y model requires 1 hour of electronic work and 3 hours of assembly work. Each model Z requires 3 hours of electronic work and 2 ... 
math
A company produces three types of color TVs: Models X, Y and Z. Each model X requires 2 hours of electronic work and 2 hours of assembly work. Each Y model requires 1 hour of electronic work and 3 hours of assembly work. Each model Z requires 3 hours of electronic work and 2 ... 
Trig
I'm confused on how to determine what the end result angles are for a trigonometric identity (I get how to find the value of sin, cos, etc., and I know how to find the reference angle. I just don't know how to determine further angles from there). For example, 3tan^2x1 equals... 
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. 
Algebra
Can someone check my work please? Write using positive exponents, and simplify if possible. 1. (–3x)^–2 answer: 1/9x^2 2. Multiply. Write the answer in scientific notation. 
math check
Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)? Answer 1 1/2 x $2.00 = $... 
Algebra 2
Q: (x^29/x^25x)(5xx^2/x^2x12)(x^28x+16/x4) 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 2
There are twenty songs from which a disc jockey can chose five to play on her program. How many different arrangements of songs are possible for the program? Please check my work 20x19x18x17x16 
math,correction
okay for the first one i/ve done it twice and both times i got 10, not 10. check your work to make sure you did it correctly. for the second one i got 24 so you are correct Directions solve for x. (x)/(x2)(x+1)/(x)=(8)/(x^22x) The answer i get is : 10=x or x=10 Problem #... 
Math
I cannot come up with the right answers for my matrix. I need to write as a system of equation and solve the system. 1 2 3 x 1 1 1 1 y = 12 1 1 2 z 2 The answers I come up with are 31 15 15 when I check these, they will not work, what I am doing wrong? 
Math(Please check my work.)
(2x3)(x^2+5x3)=2x+10x^215x+9 *Is this correct.? this is a different problem... Here's how this one works out: ......x^2 + 5x  3 ............2x  3 ================== ...... 3x^2  15x + 9 2x^3 + 10x^2  6x ====================== 2x^3 + 7x^2  21x + 9 I hope this will help. 
Ed Tech plz helppppp
What does it mean to troubleshoot your computer? identify problems with your computer and attempt to fix them*** to open your computer to see what's missing from the hard drive to switch the mouse and keyboard plugs to download and print an new computer manual 2. If your ... 
English
1. I can't concentrate on work. 2. I can't concentrate at work. 3. I can't concentrate (on something) at work.  Which one is correct? Does #1 mean #3? •English  Writeacher, Saturday, June 18, 2016 at 8:46am 1 and 2 are fine, but mean different things. 3 ... 
Math CAN SOMEONE PLEASE CHECK MY WORK?
7x+5y=26 x=286y solve using substitution okay so then 19642y+5y=26 then combined like terms so 196+37y=26 37y=222 y=6 is this part correct? 
Phyics
Could you please check my work, I am not too sure what do. An airplane that flies at 100 km/h with a 10 km/h tailwind travels at 110 km/h relative to the ground. If it instead flies into a 10 km/h headwind, its groundspeed is : 110 km/h /2= 55 km/h 
HURRY CHECK THIS MATH
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 ... 
Health/ Basic Clinical Procedures
please check my answer thanks True or False A physical or mechanical device used to remove healyh hazzards from the work place is called personal protective control I said True 
trig
give exact value of cos 75 degrees. give exact value sin 15 degrees. give exact value sin 225 degrees. You will have to use the addition relations here. Notice 75 is 30 +45, 15 is 4530, and 225 is 180 + 45. I will be happy to critique your work. 
algebra
Will someone check my work here and let me know if I am right. Thanks. Evaluate x+y/7 for x=44 and y=12 My answer is x+y/7=8 2. Translate to an algebraic expression. The product of 42% and some number. The translation is .42x=y 3. Use < or> to make the statment true. my ... 
precalculus
can you check my work Given: r = 4/26sintheta What is the eccentricity of the function? r = 4/26sintheta r=4/8sin theta r=2sintheta the eccentricity is 2 
MathPlease Check Work!
Find the image of P(5,3)under each of the given transformations: 1. r xaxis(5,3)? 2. Rorigin (5,3)? 3. R90 (3,5)? 4.T 0,3 (5,0)? 5.r xaxis o T2,2 (7,1)? 6. r xaxis o r y=x (3,5)? 7. r y=x o r xaxis (3,5)? 8. R(2,2) o T5,3 (12,4)? Thank you! 
French 1
Can anyone check my french work please?? 
Algebra/Trig Check Answers please
Please check these answers thanks. 1. The shadow of a vertical pole is 24.8 feet long when the angle of elevation of the sun is 42degrees 0.0'. Find the height of the pole. Answer: 22.3=height 2. From a point on a lighthouse 108 feet above water, the angle of depression of a ... 
Physics (Trig Bit)
A boy and a girl carry a 12.0 kg bucket of water by holding the ends of a rope with the bucket attached at the middle. FI tehre is an angle of 100.0 degrees between the two segments of the rope, what is the tension in each part? I do not understand the work Fw = mg = (12.0 kg... 
math
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 ... 
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. 
PreAlgebra (check my answer)
5. Dave has work shirts in 5 different colors. He works three days each week. How many possible arrangements are there for the shirts each week? A. 15 B. 60 C.120* D.125