Trig check my work please?
90,505 results, page 79

Trig
solve over the indicated interval expressed in degrees to 2 decimal places. sec(theta/2)=1.4275, 0<theta<360degrees 
Trig
Suppose a CD player makes 48 revolutions per minute. Through how many degrees will a point on the edge of a CD move in 1 minute? In 2 sec? 
trig
How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated! 
trig
How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated! 
trig
Points X, Y, and Z are on the circumference of a circle with radius 2 such that <YXZ = 45 degrees and <XZY = 60 degrees. Find the area of triangle XYZ. 
trig
if the balloon is currently floating 60 feet in the air (measure from the bottom of the basket) , what is the approximate angle of depression of the person in the basket? 
MATH: TRIG
IF X IS AN ANGLE IN THE FIRST QUADRANT AND COSX= 3/5, FIND THE EXACT VALUE OF SIN2X DONT UNDERSTAND, KNOW THAT THE COSX IS ON A 3,4,5 TRIANGLE 
trig
bike tires are 22 inches in diameter and has an angular speed of 5 miles per second, how fast is the bike traveling in mph 
math pre calc/trig
Find the length of each side of a square if the diagonal is 7(square root 2)? How do I solve or set up this problem? 
Trig
the angle of elevation to the sun is 65 degrees. A building casts a shadow 16m long. What is the height of the building to the nearest meter? 
trig
A gear with a radius of 32 centimeters is turning at pi/9 radians/sec. What is the linear speed (velocity) at a point on the outer edge of the gear? 
trig
The angle relative to the horizontal from the top of a tree to a point 12 feet from its base(on flat ground) is 30*. Find the height of the tree. 
trig
In a certain right triangle, the two sides that are perpendicular to each other have lengths h = 4.40 m and b = 8.70 m. What is the length of the third side of the triangle? 
Spanish Help
Hola! Can you check my work and tell me if it's all right? State whether the command is formal ("Ud.") or informal ("tú"). 1. Come la sopa. Formal. 2. Hable más despacio. Informal. 3. No compres más ropa. Informal. 4. Beba m�s agua. Formal. 5. No vengas tarde. ... 
physics
A mass of 0.116 kg hangs from a vertical spring in the lab room. You pull down on the mass and throw it vertically downward. The speed of the mass just after leaving your hand is 5.60 m/s. (a) While the mass moves downward a distance of 0.04 m, how much work was done on the ... 
math
Hi again. I don't understand these two questions so um please help me. Also explain me how to do it. Please 1. An electrician charges $40 to come to your house. She also charges $55 for each hour that she works. The electrician charges you a total of $190. How many hours does ... 
Math
Could someone simplify this? (3a)(3a)^3 The "^" is an exponent, so it means "cubed" or "to the third power" in this case. its means to the third power I know that. _ I need to simplify that monomial. (3a)(3a)^3 (3a)(3a)^3 = (3a)^4 = (3^4)*(a)^4 = 81a^4 could you help me get ... 
Help me please
Find a number that is decreased by 12 when you form half of the number, explain how you got your answer. It reads to me that n/2 + 12 = n multiply each side by two... n+24=2n subtract n from both sides nn+24 = 2nn 24=n check it. Take one half of 24, or 12. Is that the same ... 
math
please check my answer. each test is worth 100 points. the following test have been taken and earned 91, 90, 93. for a total of 360 points to earn an A, what grade should be made on the final test to earn an A 
Physics=Please check
I have an electrical circuit which has 20V shown on left side I=0.8A on top I = 0.3A on bottom I have to find the resistance Would I add 0.8 + 0.3 and then use the formula V = IR so it would look like this: 20V = 1.1A x R 20V x 1.1A = R 
Anatomy and Physiology
Hello! Thanks for checking my question out! ____ 9. What type of bone is a skull bone? (1 point) a) long bone b) short bone c) flat bone d) irregular bone My Answer: C Could someone please check my answer? Thanks!  Da Fash 
French this is just for a checkover
Complete the following sentences with a verb from the box. In the box are the following words: apprendre, comprendre, prendre, and mettre. 1. Pour aller a l'ecole, nous prenons le bus. 2. Je ne comprendons pas. Parle plus fort! 3. Florence prend un disque de jazz. 4. Mon petit... 
Physics
A glider (mass = 0.12kg ) on a frictionless horizontal air track is connected by a light string over a pulley to a metal block (mass = 0.13kg ) hanging vertically (see figure below). The objects are released from rest and move 0.44 m . a)Find the objects' acceleration. b)Find ... 
calculus
The circumference of a sphere was measured to be 76 cm with a possible error of 0.2cm. 1. Use differentials to estimate the maximum error in the calculated surface area. Please round the answer to the nearest tenth. 2. What is the relative error in the calculated surface area... 
statistics/please check calculations
questions reads as follows: sat scores around the nation tends to have a mean score around 500, a standard deviation of 100 points and are approximately normal distribution. a person who scores 600 on the sat has approximately what percentile rank within the population? please... 
Social Studies
Please check thanks! 1. Which action on the part of the progressives had the LEAST immediate effect on South Carolina? a. ending child labor b. ending business trusts*** c. outlawing the use of alcohol d. extending suffrage to women 2. Which amendment to the U.S. Constitution ... 
Algebra (Please check)
PLEASE CHECK MY ANSWERS (: I just want to make sure I am doing this correctly __________________________________ Graph the system of constraints and find the value of x and y that maximize the objective function. Constraints: x ≥ 0 y ≥ 0 y ≤ (1)/(5) x + 2 5... 
HUM/205
Select one artwork that expresses a human experience you have encountered in your own life. Human experience, or the human condition, includes birth, death, love, loss, pleasure, pain, hope, frustration, elation, despair, values, and beliefs. Your chosen work must be from ... 
SS
Can you check my answers? 1;what was the effect of WWI on SC? A;state economy shrunk*** B;citizens used more resources C;factoryy production slowed D;women worked mens jobs 2;How did the end of WWI affect farmers in SC? A;crop prices dropped*** B;rural farmers got electricity ... 
mAth EQUATION/FRACTIONS
Solving equations with fractions can you check these? 16) 51m = 3 i got: m =17 18) 5j = 50 i got : j = 10 20) 1/4c = 9 i got: c= 36 22) 11e = 15 i got: e = 1.363636363 24) 19 = 1/6q i got: q = 114 26) z/4 2 = 10 i got: z = 48 28) 5/6n 2 = 8 i got : n = 12 30) j/7  10 = 32 i... 
chem/plz/check work studying for a final
A 20.5 lb cast iron boat anchor displaces 1.33 qt of water when submerged. What is the density of the cast iron, in g/cm3? 1L=1.057 qt 1kg=2.205lb 1lb=453.6g 20.5lb X 453.6g/ 1lb = 9298.9g 1.33qt X 1L/1.057qt = 1.26L 1.26L X 1000cm3/1L = 1260cm3 9298.9g/1260cm3 = 7.38g/cm3 **... 
Statistics
Local food distributor claims that 18% of all food sold are vegetables. If 112 food items are sold are randomly selected, what is the probability that the proportion of vegetables sold differs from the population proportion by more than 2%? I am trying to plug in the formula ... 
Science 6TH Grade
What would the application be to my experiment which was "We dig through soil and check for inorganic and organic matter in the soil and look for natural things in the soil(ex; beans,feather,rocks,sticks,and grass)" Please help! ive been on this for 4 hours now and have had no... 
Language Art (Please Check)
i think its C. when does juan catch the bus for school? Which of the following correctly names the subject and the verb of the sentence? A.juan;catch B.when;catch C.juan,does catch D.when;does catch 
Physicscan anyone check my work?
A particle starts from the origin with velocity 2i m/s at t = 0 and moves in the xy plane with a varying acceleration given by 2 (sq root t) where is in meters per second squared and t is in seconds. (a) Determine the velocity of the particle as a function of time. So I ... 
math
please help me with my math. Use the distance formula to find the distance between the following points. Show all your work. Round to the hundredths place. (4,5) and (7,3) (2.4,8) and 1,6.3) (29,4.1) and (53.2, 100) 
Math
Find all complex zeros for the following polynomial function. Please show all of your work. f(x) = x^4  91x^2  900 Hi, I need help... I'm not understanding this complex zero.. 
Math  Graphing a function
Graph the function below. Determine the domain, range, and horizontal asymptote. Please show all of your work. Submit your graph to the Dropbox. f(x) = (3/2)^(4x) 
calculus
The point on the curve for y = sqrt(2x+1) at which tangent is perpendicular to the line y = 3x + 6 is.... a. (4, 3) b. (0,1) c. (1, sqrt3) d. (4, 3) e. (2, sqrt 5) I'm not sure, but do you find the perpendicular slope (1/3) set that as dy/dx and solve for x or y? I tried ... 
Statistical Math
Starting with the data values 70 and 100, add three data values to the sample so that the mean is 90, the median is 91, and the mode is 91. Please show all of your work. 
Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. I am not sure how to start this. 
Physics(Please respond)
A system does 210 J of work on its environment and gains 80.6 J of heat in the process. Find the change in the internal energy of (a) the system and (b) the environment. I am not sure how to start this. Thank you for the help. 
calculus
The midppoint of the line segment from P_1 to P_2 is (5,4). If P_1=(2,2), what is P_2? For the given equation list the intercepts and test for symmetry. 49x^2+y^2=49 Please show work 
Math
An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete solution. 
Math
An equilateral triangle ABC has AB=20√3. P is a point placed in triangle ABC and D,E and F are the foot of the perpendiculars from P to AB, BC and AC, respectively. If PD=9 and PE=10, what is the value of the length of PF? Please work the complete solution. 
math
Find the area of the shaded region. View the graph and image at: postimg.o rg/image/dg4kt89v1/ Please help me explain this one. I know the ans to this one but can not work out. 
Physics
Help me please I'm stuck on this question 2.In a thunderstorm at 20.0°C, Karen sees a bolt of lightning and hears the thunderclap 3.00 s later. How far from Karen did the lightning strike? Show your work. 
Math
Louis paid $42 for a dozen magazines with her annual and subscription to her favorite sport magazine. What is the unit cost for each magazine?(How many magazines did she subscribe to) Please show work. 
math please help
In the diagram below, we have DE = 2EC and AB = DC = 20. Find the length of FG. I have no idea how to do this. I did a problem almost exactly the same and approached it the same way, it did not work. 
Geometric progression
sum of 4 terms of g p is 30 & sum of first and last term is 18 . Find gp a(r^41)/(r1) = 30 a + ar^3 = 18 a(1+r^3) = 18 it's easy to see that if a=2, r=2 Does that work on S4? 2*15/1 = 30. Yes So, the GP is 2,4,8,16,... But sir I want not logic proof , please give complete proof 
Math
Bill's baseball bag weighs 4 pounds . If he takes out 2 pairs of cleats that weigh 6 ounces each . How much will his bag weigh? Please show the work 
6th grade math
You roll a number cube 20 times. The number 4 is rolled 8 times. What is the experimental probability of rolling a 4? A. 40% B. 25% C. 20% D. 17% How do I work this problem out? Please explain. Thank you. 
Math
A rectangle's length and width is a ratio of 17:2. The area is 136 square yards. What is the length and width. I have no idea on how to even attempt to work this problem. Please help! 
Math
A ferris wheel has a diameter of 10 m and takes 24 sec to make one revolution. The lowest point on the wheel is 1 m above the ground. (4 marks) a. Sketch a graph to show how a rider's height above the ground varies with time as the ferris wheel makes a rotation. Assume the ... 
English
MEMORANDUM To: Managers of Semper Absum Insurance From: Walter smith Date: October 29, 2008 Re: Increase Employees work efficiency Effective from one week from today, all employees must have their onehour lunchtime away from their desks. This new policy benefits the employees... 
Statistics (Check Work)
Can Someone help me with these 2 problems? I am certain I am solving them correctly, but for some reason the computer keeps marking my answers as incorrect. Question 1: Minnesota had the highest turnout rate of any state for the 2012 Presidential election. Political analysts ... 
math(please help)
Allison, Ashley, and Becky weigh 124 kg altogether. Allison and Becky weigh 102 kg altogether. Allison and Ashley weigh 86 kg altogether. How much does each person weigh? please show your work. 
Health of young children
5.) A child in your program has just returned after having chickenpox. You notice that she still has a few dry scabs. What should you do? A. Send her home. She is still contagious. B. Welcome her back and let her know what there is to do today. C. Allow her to stay, but ... 
grammar check PLZ HELP ;;
Which sentence contains an error in the use of end marks or commas? A.Miss K.C. Fairchild will lead the band in a Sousa march. B. Mom, what does B.C. mean? C.Dr. and Mrs. Majeck will attend the party on March,12,2007. D. Address inquiries to Ella Adams, 315 Elm St., St. ... 
Physics check
A performer, seated on a trapeze, is swinging back and forth with a period of 9.55 s. If she stands up, thus raising the center of mass of the trapeze + performer system by 20.0 cm, what will be the new period of the system? Treat trapeze + performer as a simple pendulum. (a) ... 
College Physics
(a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's working out? 2 h (c) Calculate the amount of mechanical work necessary to lift a 126 kg barbell 2.10 m. 3 J (d) He drops the barbell to the ... 
Survey of Math 140
on march 8, you sign a $4000 note with simple interest 10% for 240 days. You make partial payments of $1300 on May 26 and $2300 on july 31. How much will you owe on the date of maturity (November 3)? Please show work!!! 
math
the distance of fencing reqired for 75 acres but fist changing it to meters squared i think that it is 304 969 m sq but i still don't know how much fence wire i need foe the circunferance please ckeck my work and give me the correct answer 
Ms. Sue Help me please!
Mrs. Miller sells a house for $179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. I don't understand how to do it, I have seen the other questions and I don't get how you got 1074000. Can this be explained? 
Math (check my work)
Angle A measures (x + 13) °. Angle B is complementary to angle A and measures (2x +23) °. a. Write and solve an equation to find the value of x. Not sure how to write the equation but the value of x = 18 b. What are the measures of angle a and angle b? angle a = 31° angle b... 
Foreign languages
Writeacher, thank you very much! Can you please check these sentences, too? 1) They left for the supermarket a few minutes ago.My child is with them. They need to buy food for lunch and won't be back until noon. We'll spend the afternoon at home because it's scorching hot ... 
maths
Here are two pots. Diagram: Pot A Height: 8cm Pot B Height: 10cm Pot A and pot B are MATHEMATICALLY SIMILAR. The area of the base of pot B is 160cm2. Work out the area of the base f Pot A. My work: 1)Labelled POt B diagram as having area of abse of 160cm2 2)160*10= 1600cm2 3... 
Algebra
I'm trying this again, I'd like the quadratic form, so i can then work the intercepts myself. SO: what's the quadratic form of 1/4(x+3)^24 I need it to find the intercepts of the parabola it describes. Check: I think the parabola is 1/4 scaled, moved 3 to the left and down 4 ... 
Math
The area of a regular pentagon with a perimeter of 35 units. Join the centre to each vertex to form 5 eq Join the centre to each vertex to form 5 equal triangles. Consider one of those triangles the central angle is 72º and each of the other two equal angles is 54º, and the ... 
Chemistry
What is the solubility of lead bromide at 25C? (Ksp = 4.6 x E^6) You have used another name here but work the problem the same way I showed you for AgCl. The only difference is that PbBr2(s) ==> Pb^+2 + 2Br^ Post your work if you get stuck. 
Physics
Does using (Fcos(theta))d work for this problem or should cos be replaced with sin? A cheerleader lifts his 66.4 kg partner straight up off the ground a distance of 0.718 m before releasing her.If he does this 27 times, how much work has he done? 
Science, Maths
A block and tackle of 5 pulleys is used to raise a load of 5o kgf steadily through a height of 20m. The work against friction is 2000J.Calculate the work done by effort, efficiency and mechanical advantage. 
Math(Please check)
Use the fundamental identities to simplify the expression. tan^2 Q / sec^2 Q sin^2/cos^2 / 1/cos^2 = sin^2 / cos^2 times cos^2 / 1 = The cos^2 cancels out so sin^2 is left. Is this correct? 
Math, Algebra,
Help! I can't understand or find out the answer, I tried but I keep getting lost! George rides a cab to work 3 days a week. He pays $3.50 for the cab to pick him up. He pays an additional fee for each mile driven. In one week, George paid $35.25. If he rides 11 miles each day... 
algebra
a survey of 2000 people was giuven their mode of transportation to work each day, the pie chart below gives the results of people surveyed, how many traveled by bike to work? 
Health Sciences
How could you relate work of podiatrist with speech and language therapist and occupational therapist? They are three different professions but the question asks about how they work together as a team 
English
What is a work's theme? A. Is absolute B. can be interpreted by differently by different readers C. is always implied D. is usually state in the title I would pick B or D but im not sure what a work theme even is 
math plz help!!!!!!
What do angles, acute angles, and complementary angles have in common??? they are all angles duh! my teacher said that that's too obvious Please check your book for the similarities. This site also has several explanations about the similarities. (Broken Link Removed) 
help...solving a polynomial....algebra
solve this please....help me....12x(squared)+7x10 Do you wish to factor this trinomial? If so, the factors are: (4x + 5)(3x  2) You can use the FOIL method to check. If this is supposed to be an equation: 12x^2 + 7x  10 = 0 ...then set each factor equal to 0: 4x + 5 = 0 3x... 
math
Wondering the answers to these: Find the value of each of the following. Leave your answers as fractions where appropriate. [I did these myself but need to answercheck] a) log[base4](1/8) b) 10^(10log3) c) 2log[base3](9) d) log[base3](3)^(2x) ans: a) 3/2 b)(1/3)^10 c) 4 d)... 
Physics  check answers please
I am to fill in the blanks without a word bank, my answers are in brackets. 1. A ____ diffraction pattern is unique because it has a larger central maximum. (single slit) 2. the brightest, clearest diffraction pattern is created with a _____ (barrier) 
Math
integrate (x^2+8)/(x^25x+6) by partial fractions method. I first did long division, and came up with 1+((5x+2)/(x^25x+6)). Then I did partial fraction for (5x+2)/(x^25x+6) by going A/(x3)+B/(x2) and I got 17/(x3)12/(x2) to take the integral of. But when I check online ... 
Please check my answer(Social Studies)
In the Mayflower compact, why do the pilgrims "all due submission and obedience"? To show that they will remain sevants of God To show that they will follow the colony's rule•• To show that they will elect a colonial leader To show that they will follow the king of England 
Calculus help PLEASE
It is known that an object traveling in straight line with velocity function v(t) = t^2t, where v is measured in meters per second. Find following. The position function s(t) when we know the position 5 meters after 2 seconds. I tried to work this out and got s(t) = (t^3)/3... 
college
Assignment Testing a Theory Write at least 300 words describing a time when you had to test a theory. This theory may be something you have tested at work, school, or even at home. Answer the following questions in your summary: • What type of informal research method did ... 
Introduction to the Criminal Justice System
There is a large round up of gang members, this is a federal case but is being supported by about 50 local officers and state troopers. I need help please, coordinating he informaiton for briefing on the jprocess at the federal court building. the briefing is to detail what ... 
Science 8th grade
Please check my answer thanks A woman who recently came home from a tropical vaction now has abdominal pain and diarrhea// Her blod test show an elevated eosinophil level. Which of the following organisms is most likely the cause of her illness? A Bacteria B Worm C Virus D ... 
U.S.History
please check: One of the characteristics of postmodern fiction is the use of a. linear, chronological plots and standard methods of character development b. nontraditional forms that blur the boundaries between fiction and nonficitioin. c. themes advancing the idea that life ... 
Grammar and Composition
please check my answers: write the plurals of the following singlular words. 1. guess : guesses 2. tongue : tongues 3. attorneyatlaw : attorneysatlaw 4. theory : theories 5. leaf : leaves 6. tomato : tomatoes 7. mouse : mice 8. beach : beaches 9. piano : pianos 10. monkey... 
English
Can you please help me check these school rules in case of an evacuation? 1) During an evacuation you have to (must?) 2) stay calm 3) queue with the respective openline and closeline 4) go calmly to the nearest emergency door 5)if you need, go down the stairs, always quietly 6... 
English
Which of these words has the same denotative meaning a, but a different connotative meaning than, the word COPIOUS. A. meager B. abundant C. lavish ******* D. sparse An award is given every year to the student ______ has the highest gradepoint average. Which of these ... 
Social Studies Check Answers Please
What was a common thread in the fall of communist regimes throughout Eastern Europe? A) a decline in education and health care B) poor economies and demands for more rights C) a lack of strong leaders in communist governments D) support for military alliance with the United ... 
Chemistry
Iron 59 has a half life of 45.1 days. How old is an iron nail if the Fe59 content is 25% that a new sample of iron? Show all calculations leading to a solution. Can you work the problem? I don't know how to solve for t!!! Please. 
physics
A 380 piano slides 3.8 down a 22 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. a.Determine the force exerted by the man. b.Determine the work done by the man on the piano. c.Determine the work done by the force of gravity. d... 
university of oklahoma
A 85g bullet is fired from a rifle having a barrel 0.582 m long. Choose the origin to be at the location where the bullet begins to move. Then the force (in newtons) exerted by the expanding gas on the bullet is 15750 + 9900x  27500x2, where x is in meters. (a) Determine the... 
Calculus
Would you please check my answer to make sure I did it right? Bus travel, a bus company finds that monthly costs for one particular year were given by C(t) = 100 + t^2 dollars after t months. After t months the company had P(t) =1000 +t^2 passengers per month. How fast is its ... 
Science
China has implemented a campaign to reduce birth rates that includes _____________ rewards for single child families. Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts about this subject. great? Yes. The rewards are ... 
Enlglish
please check my answer thanks :) Which sentence is the hypen used correctly? 1. Molly my beagle loves to fun in the field. 2. She wore her hair in a closelycropped style. 3. Jan's house was painted lightblue 4. We stayed at a first class hotel. I picked lightblue 
history
please check this President Wilson convinced the Allies to a. divide the spoils of war among the victors b. accept his plan for the League of Nations c. make Germany pay heavy war reparations d. allow Germany to keep its overseas colonies i'm stuck between b and C but i think ... 
Algeblease check my answer
Posted by Annie on Monday, October 18, 2010 at 7:20pm. Choose the equivalent expression(3h^2j^3k)^2(hj^5k^3)^2 The signs that look like minuses are negative signs Answers: 3h^6j^16K^4 9h^2j^5j^16k^4 9h^6j^4k^4 9h^6j^4k^4 Please help I'm so lost right nowIreally ...