Trig check my work please?
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Math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what is... 
check my work
Of the two fractions 15/21 and 19/17 which is smaller? I think 19/17 is smaller.Pleasecheckmy work 
algebra/trig help please
is this graphable??? y=x^24x2 
Trig
what are the rectangular coordinates of (2(pi/6))? please help. 
please check
5 x <  25 can you check. 5x<25 25  0 so that equals x < 0 and i have a question is my teacher trying to find a method or an answer from me? 
Calculus (Check)
This seems to easy. Check please. Find. Lim (x^2)4 x>2 e I substitute in 2 (2^2)4 e gives me 44 e So my answer is e^0 or 1. 
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 ... 
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. 
Please check Algebra
Please take a look at my work and let me know if I made any mistakes. You don't have to give me the answers. I'd just like to know if I made any mistakes so that I can correct them. Thanks! 1. 3x – 7 = 8 + 7 +7 3x = 15 3 3 x=5 2. 14x 2 = 3x + 53 14x – 2 = 3x + 53 +2 +2 ... 
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 
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? 
English and grammar
i need someone to check my work but i cant just copy it and paste it here. i need to send it via email. please give me your email add and ill send it to you. thanks 
Math
Help meh please Check my answers I suck at dis 1. 4y+3≤y+6 Answer=y≤3 2. 2y>2 Answer=y<1 3. y/3<1 Answer=y<3 4. 3y≤2y+3 Answer= y≤1 5. Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 ... 
math please help
please check my answer thanks :) I messed up somewhere.:( Using the FIFO method of inventory pricing, what is the dollaor value of ending inventory if there were 17,000 units on hand on Dec 31 Must show all of work Jan 1 5,ooo @ $0.89 = 4450 Feb 15 10,000 @$ 0.69 = 6900 Apr 15... 
math
2/3 over 10 equals 1.8/r solve for r. (2/3)/10 = 1.8r. First, invert and multiply the denominator; i.e.,10. (2/3)*(1/10) = 1.8/r 2/30 = 1.8/r Now cross multiply. 2r = 30*1.8 2r = 54 Now divide both sides by 2 2r/2 = 54/2 r = 27 check my thinking. check my work. 
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 
Polynomials check my answer
My brother said I did this wrong can someone check this for me please X Y1 = sum(x)+ (y1)=(X+y1) diff(x)(y1)=(x+y+1) Product (x) (x1) = (xy1) = (xy1) 
Physics repost please check
Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final T initial) (2531J  1101J) = 3/2(3.0mol)(8.31)(T final  345K) ... 
Geography
Can someone please check my work? 1. Name the South American countries through which the Tropic of Capricorn passes. Paraguay, chile, Argentina, Brazil 2. Classify each of the following as high, mid, or low latitude. Europe: high South America: low Antarctica: high United ... 
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 ... 
Math gr.12 Trig.
Hi, could someone explain to me how to use a counterexample in trig to prove whether something is either an identity or equation? For ex. how would you do that with this question? sec^2xtan^2x= cos x 
trig
Getting ready for trig semester finals. Can't figure out how they are simplifying these equations. (these are the review not actual test) tanxsqr3=2tanx and 2sin^2+sinx=0 
Environmental Science
Could you please explain the distinction between eutrophication and artifical eutrophication sense eutrophication is the natural process by which a body of water gains an abundance of nutrients? One is natural and occured long before man's time. The other is man caused, ... 
Science, please help!
Please check my answer! Fill in the blank for below: Resources that cannot be replaced in the environment once they are used are _____. renewable resources compost nonrenewable resources I think the answer is nonrenewable resources.I might be incorrect, so please check! This ... 
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 
algebra
x/9 +3 = 8  x/3 Solve?????? First, get rid of the fractions to make the equation easier to solve for x. Let's multiply every term by 9: 9 [x/9 + 3 = 8  x/3] x + 27 = 72  3x 4x = 45 x = 45/4 Substitute 45/4 for x in the original equation to check. It always helps to check ... 
calc check: hooke's law
A force of 27N is required to maintain a spring stretched from its natural length of 12cm to a length of 15cm. How much work is done in stretching the spring from 15 to 25cm? and this is what i did.. please check to see if i did it correctly.. thanks :) f=27N 12cm to 15cm f(x... 
Vectors, please check drawing
Could you check to see if Ive done this right? h t t p : // imageshack . us/photo/myimages/269/vectoriz . j p g / 
Trig  check my answers plz!
1. (P 15/17, 8/17) is found on the unit circle. Find sinΘ and cosΘ Work: P= (15/17, 8/17) cosΘ = a value P = (a,b) sinΘ = b value Answer: cosΘ = 15/17 sinΘ = 8/17 2. Should the triangle be solved beginning with Law of Sines or Law of Cosines... 
Chemistry
Combusting 44.8L of H2 with 22.4 L O2 (both at STP) results in the formation of 44.8 L of H2O if the reaction is maintained at the same conditions (STP) and goes to completion. Given the heat of formation of water (= 241.8 kK/mol) calculate a) the PV work b) the heat evolved ... 
trig
Please evaluate cos 15 degrees 
trig
cos2(120degrees) help me solve this please 
alg2/trig
The expression a/ab + b/ba is equivalent to a) 1 b)1 c) ab/ab d)a+b/a^2b^2 please help! 
Trig
cotxcosx/csc^2x1 Please help me verify 
Variation
Please check my work, the answer I am suppose to get is 17.5, but instead I got 2.5. Solve the problem. 66. y varies jointly as a and b inversely as the square root of c, y=24 when a=6,b=4, and c=49. Find y when a=2, b=5, and c=16. I got: y=kab/ sqrt of c, y=2*5/ sqrt of 16, ... 
Check My Answer! :)
What is the surface area of the square pyramid if the altitude is 4 cm, the length is 6 cm, and the height is 5 cm? a. 48 cm^2 b. 144 cm^2 c. 156 cm^2 d. 96 cm^2 i think the answer is 144 cm^2. Please show me how you did the work so then i know that i at least got partial credit. 
trig/cal
how does pih^3/12 simplify to pih^2/4? If you divide denominator by 3 you get 4 and then I guess the 3 goes away leaving a 2? But if this is correct why does this work? 
grammar(possessive)
"A years worth of hard work has finally paid off." year (my choice) years years' year's Please check. 
algebra
Find the value of y for a given value of x, if x varies directly with x. If y=39 when x=117 what is y when x=132 my answer y=k*x 39=k*117 39/117=k k=0.3 y=k*x y=0.3*1.32 y=3.96 can someone please check my work 
drwl please check
A shotputter puts a shot (weight = 70.1 N) that leaves his hand at distance of 1.53 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.18 m above the ground. Include the correct sign for work. (b) Determine the change... 
6th grade grammar please help
I need a good grade in grammar so please check my answers! Identify the object of the preposition in each of the following sentences. 1. Ashley and her father arrived home from work. a. and b . father c. from d. work 2. Ashley’s bedroom was across the hall. a. bedroom b. was... 
math
Compute delta(y) and dy for the given values of x and dx=delta(x) y=x^2 , x=8 , delta(x)=0.5 Delta(y)= ??? dy = ??? I got dy=8 by doing: dy= (f prime of x)dx dy=2xdx dy=2xdelta(x) dy=2*8*0.5 dy=8 but I have not clue how to find delta(y) please help! deltay = y(x+deltax) y(x... 
Trig
Please help me to simplify using identities 1+tan^2x/tan^2x I don't really understand how to do please help 
DanH I NEED ENGLISH HELP
Almost_________ work would be better than___________. anyone's hers anyone's her's anyones hers anyones' hers' Please check my previous answer. 
physics (CHECK MY WORK PLEASE ASAP)
An object of mass 1.00kg is moving over a horizontal circular path of radius 2.00m, with a speed of 3.00ms^1. Determine: (a) its centripetal acceleration (b) its kinetic energy (c) its period (d) its angular velocity a: 3.00^2/2.00 = 4.5 ms^1 b: 0.5 × 1.00 × 2.00^2 × 3.00... 
math plase check
What number would be used to represent a temperature of 7 degrees below zero. I think its is .70 please check 
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. 
sentence correction
I don't see anything wrong with this sentence: It will be greatly appreciated if the bill is paid by check when possible. You're right; there's nothing wrong with this sentence. But you can make it much better by putting it in the active and not passive voice. We would ... 
Can someone check my answer plzzz!!!
Simplify (6x^2)^2(0.5x)^4 show your work IS this right?? (6x^2)^2 * (0.5x)^4 =6^2 x^4 *(0.5)^4 x^4 =(36 * 0.0625) * (x^4 * x^4) = 2.25 * x^0 =2.25 *1 =2.25 is this right Can you check my answer? 
math
Susan has 8/9 gallons of water. She drinks 2/5 of it. Select all the statements that help you determine what fraction of a gallon she has left. Divide 8/9 by 2/5. No Divide 2/5 by 8/9. Yes Multiply the fractions together. No Multiply 8 x 2 and 9 x 5. No Can someone check my ... 
math
At a quality control checkpoint on a manufacturing assembly line, 8% of the items failed check A, 10% failed check B, and 2% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what is... 
Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what ... 
Math
At a quality control checkpoint on a manafacturing assembly line, 10% of the items failed check A, 12% failed check B, and 3% failed both checks A and B. a. If a product failed check A, what is the probability that it also failed check B? b. If a product failed check B, what ... 
Chemistry
You work at a fastr food restaurant 5 days a week, 6 hours a day, and are paid $840 every two weeks. Each hour you wrap 184 burgers. How many burgers will you have to wrap to make a million dollars? I got $7142857 from the proportion: $1,000,000x 2 weeks/$840 x 5 days/1 week x... 
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 ... 
@Kemon
I deleted your 19 questions because you showed none of your work and posted no answers. If you'd like us to check a few of your answers, please repost no more than five questions along with your answers. 
English (Please check Ms. Sue)
Please check this. Thanks! Imagine you are writing are research paper on Margaret Atwood's feminist ideas. Which of the following sources would you consider a secondary source? a. an interview with the author b. Margaret Atwood's The Penelopiad c. an essay about feminism in ... 
English
Can you please help me work out phrasal verbs related to work? When do you think will you come ...... to work? What are the possible prepositions? back .... are there others? What about "down"? Can you think of any phrasal verbs used with work (apart from take a day off work, ... 
Trig
I need help solving the two problems below. Thanks For each equation, determine whether its graph is symmetric with respect to the axis, the axis, and the origin. Check all symmetries that apply. 1. y=ã(4x^(2)) 2. 34x^(2)+12y^(2)=18 
Physics with work, pls help
A proton is moving in a circular orbit of radius 11.8 cm in a uniform magnetic field of magnitude 0.232 T directed perpendicular to the velocity of the proton. Find the orbital speed of the proton. Answer in units of m/s. I came up with .118/2.83x10^7 and it was incorrect. (... 
English
Now, let's check how well you can use the expressions you've learned. I will distribute handouts. You have to solve the problems. Are you finished? Then, I'll check the answers. Look at the answers on the blackboard. Check your answers. How many students have 10 points? Are ... 
physics, please help
its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various displacements listed below (i won't bother telling ... 
PreCalculusPlease check
Please check: 1.Find polar equation of x^2 + y^2 = 10y subbed r^2 for x^2 + y^2 and sin(theta sin for y =r^2=10sin(theta) 2. y=5 r=5/sin 3. x^2+y^2 =x^2 + y^2 =2x+3y 
Trigonometry
Use the trig Identities to find the other 5 trig functions. Problem 7.)Tan(90x)=3/8 8.)Csc x=13/5 9.)Cot x=square root of 3 10.)Sin(90x)=.4563 11.)Sec(x)=4 12.)Cos x=.2351 I need HELP! 
trig
I am currently taking a trig class. I need help understanding how to solve for sin,cos, and tan in problems which give an angle and a side length or the hypotenus. Any help would be muchly appreciated 
Health care please check my answer
Please check my answer thanks What does term Apex represent . A 65 year old has a murmor over the apex of the heart. A. tip B. nearest the middle C. front D. Back I think it is A tip 
PreCalcplease check
Please check this for me expand (3z2b)^5 using Binomial Theorem (a+b)^n = n on top sigma in middle k=0 to right (n/k)a^(nk)b^k (3a2b)^5 = 5 on top sigma in middle k=0 on bottom(5/k)(3a)^5k(2b)^k (5/0)(3a)^5(2b)^0+(5/1)(3a)^4(2b)^1 +(5/2)(3a)^3(2b)^2 +(5/3)(3a)^2(2b)^3... 
Trighelp please
Sin23=p write cos113 in terms of p 
trig
What is the exact value of 11pi/8? (with steps please) :) 
trig
Please help to find the value of: Sin 17 degree. 
PreCalc/Trig
Help Please Find (fog)(2) and (f+g)(2) when f(x)= 1/x and g(x)=4x+9 
Trig
Please help using identities (2tan30)/(1tan^2 30) 
Geometry (Please check my work)
A segment has endpoints M(6,15) and N(3,9). The image of the segmen for a dilation with center (0,0), has endpoints M'(2,5)and N (1,3). What is the scale factor of dilation? A. 2<<<< B. 3 C. 1/2 D. 1/3 I'm not confident with this answer because I still don't ... 
@Anionymous
You posted an entire test and all the answers, which is one of the kinds of posts Jiskha's owner is regularly contacted to remove. Please post only the 4 or 5 questions you are least sure of, plus their answer choices and your selection. Then someone here will check your work. 
college algebraneed help please!!
solve the equation in the real number system. 2x^423x^3+75x^288x+28=0 What are the real solutions of the equations? please show work. I do not know how to work this at all 
Chemistry(Please check)
Last question, I just want to make sure I understand the concept of hybridization. For carboxylic acid the hybridization is: CH3= sp3 because there are only single bonds COOH= Sp2 because the oxygen is double bonded to the C Is this correct? Thank you for checking my work! 
Social Studies check my answers please
1. Who invented the sewing machine? A.Elias Howe******* B.Robert Fulton C.Samuel Morse D.John Deere Answer A. 2. By 1860 the Midwest and the east were united by a network of_____? A. Roads B. Railroad tracks**** C. Canals D. Steampowered ships Answer B 3. Which invention ... 
English
I urgently need you to check the following sentences on job satisfaction.Thank you. 1) This newspaper article is about job satisfaction. It claims that the root of job satisfaction lies in your attitude and expectations. 2) First, it is essential to consider the kind of ... 
Precalculus
I've tried many times to get the equation to balance using trig identities like halfangle formulas, powerreducing formulas, and double angle formulas, but I couldn't get the equation to equal out. I only need to work one side to make it equal to the other, like a kind of ... 
trig
combine fractions and simplify to a multiple of a power of a basic trig. function.? sin x/cot²x  sin x/cos²x 
Math  Check My Answers, Please
Please help me by checking the following answers for me. 3. A student is attempting to solve the equation below for the variable x. Which of the statements below best applies to the mathematical work shown? Given √(4x6)=12, I square both sides, so (√4x)^26=&#... 
trig
I have heard that trig CAN be super easy, that there are just, like, 10 rules you need to memorize then all the problems are easy. ... Does anyone know what these are? Thanks! 
trig
Solving Trig Functions: How Do You Solve For Sin 7.5 Using HalfAngle and DoubleAngle Identities? 
Trig
Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant. 
Calculus (Please check my work!)
Suppose that y = f(x) = x^2  4x + 4. Then on any interval where the inverse function y = f1(x) exists, thederivative of y = f1(x) with respect to x is: (Hint: x^2  4x + 4 can be factored and rewritten as "something" squared.) Work thus far: Okay, so I know that I can ... 
Trig
I need help solving the two problems below. Thanks For each equation, determine whether its graph is symmetric with respect to the axis, the axis, and the origin. Check all symmetries that apply. 1. y=sqrt(4x^(2)) 2. 34x^(2)+12y^(2)=18 
Algebra 1Please, help me!
Please, will someone check my answers and help me solve the other questions? 1. It takes Dustin 2 hours to shovel the snow from his driveway and sidewalk. It takes his sister 3 hours to shovel the same area. How long will it take them to shovel the walk if they work together? ... 
please check my answer health insurance
Please check my answer thanks :) True or False If an enrollee uses more services then first thought they would per the PPOM calculation then the plan would show a loss for that period I said True 
trig
If cos 0 =  1/2 and tan 0 > 0, find the quadrant that contains the terminal side of 0, and then find the exact values of the other five trig functions of 0. 
Health please check my answer
Please check my answer thank you :) Dr Hannah places a stethoscope to a seven  year old child's chest. The lungs reveal basilar rales. Which method is Dr Hannah using to perform the physical exam? A. Auscultation B. Palpation C. Percussion D. Visualization My answer is C 
English please check my answer
Please check my answer thank you Cardiology is the study of the heart. Which of the following terms describes the foundation upon which the medical word is built that usually relates to the body organ involved ? A. Prefix B. Suffix C. Root D. Combining form My answer is Root (c) 
Math
Please check my answer. Four girls went to Friendly's. The check comes to $36. They want to leave a 20% tip. How much should each girl pay? 36 ÷ 4= $9.00 $9.00 × 20%= $1.80 $1.80 + 9.00= $10.80 each 
chem. check!
Can u please check this and help me on 4 questions I did not do. Thanks 1. 
Algebra
Hello, can someone help me solve and check the following 1) x  8 = 20 Check: 2) x + 15 = 35 Check: 3) x +6 = 3 Check: The symbol 'x' is in italic. If I can understand the symbols better, I belive I can get the hang of the course. 
trig
find the exact values of the six trig functions of theta equals six pi divided by 8 
Time Zones
Check my work. Calculate the correct time in brackets: 1. 1:00am at 30W = (11:00pm) at 60W 2. 3:00pm at 15W = (1:00pm) at 45W 3. 1:00pm at 120E = (9:00am) at 60E 4. 12:00pm at 15E = (6:00pm) at 105E 5. 11:00am at 15E = (9:00am) at 15W Calculate the correct longitude in ... 
Art help please
a cityscape artist completes a portrait of a busy, grimy, dirty, city with no signs of nature. which of the following might he be suggesting humanity's relationship with the surrounding world? A. cities encourage productivity and life B. cities encourage disconnection from ... 
algebra
Could someone please check my work. what is the slope of the line that passes through the given points?(2,12( and (6,11) 1/4 (my choice) 1/4 4 4 My work: 1112/62=1/4 what is the slope of the line that passes through the given points? undefined( my choice) 0 2/3 3/2 My ... 
Maths
i have an answer but im not sure if its right would you tell me please and show me the steps of how to work through the question make f the subject 7f5=3g(2f+h) my answer was f=h5/3g5 and i simplified that to f=h/3g thanks for any help you can give me 7f= 6gf + 3gh +5 f(7... 
Trigonometry/Geometry  Inequalities
Let a, b, and c be positive real numbers. Prove that sqrt(a^2  ab + b^2) + sqrt(a^2  ac + c^2) is greater or equal to sqrt(b^2 + bc + c^2). Under what conditions does equality occur? That is, for what values of a, b, and c are the two sides equal? This looks like a geometry...