Trig check my work please?

87,713 results, page 87

Math

At the Highland Hotel 578 of the 850 employees work directly with the guess. What percent of employees work directly with the guests? How do I figure it out?

algebra

Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?; c=20 Answer is b= 5√7 2)a=9; b=12; c=? Answer is c= 15 **How do I show my work to come up with each of these two answers? THANK YOU!!

math

Mr Ahmad starts work at 11.40 on Tuesday.He works for 12h45min.When does Mr Ahmad finish his work?Express your answer usering the 24-hour clock Math

Math/Physics

Please check my work below and comment. A tank initially contains 80 gallons of fresh water. A 10% acid solution flows into the tank at the rate of 3 gallons per minute. The well-stirred mixture flows out of the tank at the rate of 3 gallons per minute. Find the amount of acid...

Algebra

Write the equation of the line L satisfying the given geometric conditions. L has y-intercept (0,2) and is perpendicular to the line with equation 2x-3y=6 Show work I will be happy to critique your work on this. 3x+2y=4?

Math

A river does 6,500 J of work on a water wheel every second. The wheel's efficiency is 12%. a. How much work in joules can the axle of the wheel do? b. What is the power output of the wheel in 1 s?

physics

Consider the following figure. (a) Determine the work done on a fluid that expands from i to f as indicated in the figure. J (b) How much work is done on the fluid if it is compressed from f to i along the same path? J

math

A man,a woman and a boy can complete a piece of work in 20,30 and 60 days respectively.How many boys should join 2 men and 8 women to complete the work in 2 days?

physics

You use an inclined plane to move furniture into a truck. You perform 224 kJ of work, but only do 91 kJ of useful work. What is the efficiency of the inclined plane?

Math

How do you go about solving this? If you got paid $15 for 3 hours of work one day and $45 for 8 hours of work on another day, find your hourly rate of pay for the 2 days

physics

A net force of 1000 N is needed to accelerate a small 1200 kg car from 5 m/s to 8 m/s. Use the work-energy theorem to determine the net work done by the force.

math

a) from a to of 12 flatres, 4 are selected at random. if the lot contains 4 defective flares (flares that wilt fire), what is the probability that all 4 will not work? B) what is the probability that at most 2 will not work?

math

Would this be a good resource for my students? This website? Yes, I believe so. We have several people who are very good at helping students with their math homework questions, from elementary school through college levels. Be sure to check out the Mathematics collection, too...

Physics

please check my answers, they are Capitalized 1. the SI base unite used to measure mass is the a. meter b. second. C. kilogram d. liter 2. how does a scientist reudce the frequency of human error and minimize a lack of accuracy? a. take repeated measurements b. use the same ...

English

Can you please check these two sentences, again? I had misspelt a noun in my previous post. 1) Define the interior monologue providing an example of its use from the readings done in class. Explain then in what way it differs from the stream of consciousness. 2) Focus on Joyce...

Art

Ms Sue, can you please check my post until Writeacher comes back? I would be extremely grateful to you. I need to rephrase this sentence. 1)Give a detailed description of Winston Smith as he appears in the opening to George Orwell's 1984. Refer to the place where he lives, the...

Art

Writeacher, could you please check this sentence? Thank you. 1) The scientist could be consider as a “New Prometheus”: like fire, donated by Prometheus, could be for men a great resource, but at the same time a threat if they had not been able to manage it, so the ...

Math

I need someone to check my answer, can someone please help me? Here is the problem: Business and finance. In a bottling company, a machine can fill a 2-liter (L)bottle in 0.5 second (s) and move the next bottle into place in 0.1 s. How many2-L bottles can be filled by the ...

Technology

Please check this for me: 5. The freezing point of water on the Celsius temperature scale is a. 0 degrees b. 32 degrees c. 100 degrees d. 212 degrees A 8. A measurement for a rectangular box is given as 150 cubic inches. This measurement indicates the _____ of the box. a. ...

Science-Jiskha teacher

Can any jiskha teacher who knows about this subject well, please look at my other previous science posts to check to see if they're correct and all, bacause someone named bob has been going through them, and just saying that they're right, but I'm not too sure about that, ...

English

A: Seho, what are you doing? B: Hi, Inho. I'm doing my math homework. A: Hurry up! We have to play soccer in the playground. B: We have a soccer match on Thursday. Today is Wednesday. A: No, it's Thursday today. Come here quickly. B: Sorry. I'll be there. Wait for me. (Would ...

Math

1) Describe the relationships you discovered in the Fibonacci sequences. 2) what strategies did you use to search for relationships. 3)how many examples of a relationship do you need to check before you start to believe that the relationship might be true for the entire ...

science please check my answer

A mass is moving in uniform circular motion under the effects of a centripetal force. If the force is doubled and the radius is cut in half, by what factor will the speed change? It will double. <---- It will be cut in half. It will not change. It will quadruple. It will be...

History

The United States cut off sales of oil to Japan after the ? A. Japanese attack on Dutch Indonesia. B. Japanese attack on Pearl Harbor. C. Japanese occupation of southern Indochina. D. Japanese occupation of Hong Kong. I think it is C. Am I right please check my answers

math plz check ;-;

Order the following solids from least (1) to greatest (3) volumes. A rectangular pyramid whose base has an area of 60 in2 and whose height is 10 in. third A rectangular prism with a length of 6 in, a width of 5 in, and a height of 10 in. first A right cylinder with a diameter ...

check please

i think its nervous Which word in the sentence is the predicate adjective? During the scary movie, Clinton seemed nervous. A. during B. Clinton C. nervous D. movie

math

Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her brother, Brandon. Anne is 23...

math

Can someone check my math homework? I have to set up an equation... my math teacher said that I didn't show how I set up the equation. can someone show me how to do that please? My work is under the question. 7. Anne is seven years younger than her brother, Brandon. Anne is 23...

math

I need help solving these equations -5s+3s-2s=48 6m=5m-2+m 5d=-2d-24 you need help or you want someone to solve them for you? ;) please solve : ) thanks okay well pretty much solve for s in the first question and m for the second question and d in the third and when you think ...

Social Studies

1) What statement best describes Yokohama? A) Yokohama is an ancient political center B) Yokohama is a rural farming village C) Yokohama is a large, crowded city D) Yokohama is an important mining town 2) What describes a difference between life in japan and life in the United...

Please CHeck my French

Chère Mme Guerit J'ai mal à la gorge. Je ne mange rien. J'ai une mauvaise mine et je suis fatiguée aussi. Je dois prendre un médicament. Dois-je appeler un docteur? Qu'est-ce que je dois faire pour avoir une bonne mine?

Chemistry(Please check)

1) The reaction A + B + C = products has a rate law rate = k times A times C squared. Which of the following will result in an increase in the rate constant for the reaction? #1 - increasing the temperature #2 - adding a catalyst #3 - doubling the concentration of reactant C I...

social studies

How did the Panama Canal benefit American trade. 1)it made it cheaper and faster to ship goods.**** 2)it allowed a higher volume of goods to travel. 3)it improved trade relations with Latin America. 4)it allowed the United States to dominate global trade. Please check answer!

polynomial function

Please check my answers. Find the y-intercept of the polynomial function. f(x) = -x2 - 2x + 8 I got:y=8 f(x) = (x + 1)(x - 6)(x - 1)2 I got: y=-6 f(x) = -x2(x + 6)(x2 - 1) I got:y=0

Math

When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work.

Math

When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work.

Physics

How much work is done in lifting a 6kg object from the ground to a height of 4m? A 12n object is lifted 5m how much work is done How much work is done if a 5n object is lifted from the ground to a height of 8m? How much gravitational potential energy does the object gain?

chemistry 12

sry, a misprint. its: O2+2F2 <--> 2OF2 The question is looking for Kc. 2.50 mo of oxygen and 2.50 mol of fluorine gas are placed in a 2.00L glass container at room temperature. The container is heated to 400K and the following equilbirum is established: O2+2F2 <-->...

biology

Different enzymes work better under different conditions. Where in a human body might it be beneficial to have enzymes that work well in very acidic environments?

7th grade math

i was trying to work out the problem (1.00-x)50/15x. (x=.40g this is the answer) when i work it out i get 50-50x/15x but i dnt understand how this equals .40?? help plse

writing

there are three elements: (1) Difference between college and casual writing, (2) identifying the step from this week’s reading that you need to work on, and (3) the actions items that you will do to work on this step.

Math

I already figured most of these out, but I need to learn how to SHOW MY WORK! Can anybody teach me? I need to find the value of each letter. Once again, how can I show my work? g+g+g=d j+e=j g^2=d b+g=d f-b=c i/h=a(h>a) a*c=a

algebra

Is the following pair of lines paralle or perpendicular? Prove the answer. 2y-x=2 y+2x=4 I think that the lines are perpendicular but do not know how to work the problem. x=6/5 y=8/5 Can some one show me how to work this equation?

Physics

If a box is being pulled up a hill at an angle to find work, its W=Fdcos(angle) If a hiker is walking up a hill, the work done is W=mgh right? When do you know when you can use what formula?

math

Im having a problem understanding this problem so I cant solve it. Bruce knows how many key are on his keyboard, but some don't work. How does Bruce find the number of keys that work? write to explain

Physics

The work required to bend a steel beam with a spring constant of 10^6 n/m is 5 j. If it is treated like a perfect spring, what is the displacement of the beam? A. 3.2 mm b. .03 m C. 2.5m D. 0.026 m e. 0 Pls show work thank u!

physical science

A river does 6,500 j of work on a water wheel every second. The wheel efficiency is 12%. A. How much work in joules can the axle of the wheel do? B. What is the power output of the wheel in 1 s?

english

select the antecedent of the pronoun in the following sentence. The strikers will return to work when the union representatives have completed their negotiations. A. negotiation B. representatives C. work D. strikers

Chemistry

the longest wavelength of light that will cause an electron to be emitted from a metal is 520nm. what is the work function for this metal? (note: the work function is given as kJ/mole of electrons released)

Pre-Calc

Find the vertical asymptotes, if any, of the graph of the rational function. Show your work. f(x) = (x-4)/(x(x-4)) How would I show my work? the x-4 cancel out and I am left with 1/x. The vertical asymp. is x= 0

English

I left out the following sentences. Thank you. 1) Other minor adjustments can be made to improve your situation at work. 2) First, you should communicate your point with clarity and respect. Second, you should do your best to maintain a balanced lifestyle by spending enough ...

data 12

From a lot of 12 flares, 4 are selected at random. if the lot has 4 defective flares, what is the probability that all 4 will not work. B. whats the pobablity that at most 2 will not work?

Math

In the United States workers spend 72% of their gas usage to go to and from work. What fraction represents their non-work travel and gas usage?

College Math II

x/x – 1 - 3/x = 1/4 My problem says to show the work and to solve the equation. I am not sure how to use the steps to show my work and answer the problem. Thanks.

work/science

A 6.2 "kilo" bag of sugar is on a counter. How much work is required to put the bag on a shelf a distance of 0.41 m above the counter?

science

Need to prepare a lab that requires 1000ml of 1.0M HCl. You find some 3 M HCl to work with. What do you need and how would you work it out?

Math

I don't understand this it says If the average of 6 numbers was 58, what could the 6 numbers be? That would take forever to work out. What is the easiest way to work that out

physics

when yo say work is done? ans:work is said to be done when the force acts onthe body &if the body moves in the direction applied by the force

Math

The table shows the number of volunteers that work at a radio-thon for different numbers of hours . How many volunteers can be expected to go to work for 9 hours?

Information Literacy

Plain language searches do not work in Expanded Academic ASAP and may not work in other periodical databases because periodical databases

trig

Find the exact value of the trigonometric function given that sin u = − 8/17 and cos v = − 3/5. (Both u and v are in Quadrant III.) cot(v − u)

Trig

Half Angle Identities cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I get 7rt2/5 Is this correct??

trig

a. A sector that has been cut out of circular plastic sheet which has a circumference of 12.31 m. If the central angle of the sector is 1/4 of a revolution, find the area of the sector.

Trigonometry

How do you solve this trig identity? Using @ as theta: Sin@-1/sin@+1 = -cos@/(sin@+1)^2 I've tried it multiple times but I can't seem to arrive at the answer.

trig

i nead to find to the nearest degree all values of theta in the interval 0 x 360 that satisfy the equation 3 cos 2 theta+ sin theta-1=0

grammar

Label each clause subordinate or independent. 1. If you visit the city of Chicago.subordinate 2.the Art Institute of Chicago is quite famous independent 3.While the Chicago White Sox play in Comiskey Park. subordinate 4.after the sears Tower was built subordinate 5.the Chicago...

English

1. Mark an O on the picture you like, and mark an X on the picture you don't like. 2. Mark O on the picture you like, and mark X on the picture you don't like. 3. Check a circle on the picture you like, and check an X on the picture you don't like. 4. Check circle on the ...

Calculus (Definite Integrals - Work)

Recall that work is defined to be force times distance, and that the weight (force) of a liquid is equal to its volume times its density. A fish tank has a rectangular base of width 2 feet and length 6 feet and sides of height 5 feet. If the tank is filled with water weighing ...

trig

Use an addition or subtraction formula to write the expression as a trigonometric function of one number: tan75degrees-tan15degrees/1+tan75tan15=tanAdegrees =square root B Its asking for the value of A and B. I know A =60 degrees, what I can't figure out is B, I don't ...

Maths

Just need a bit of help understanding what exactly i have to do here to work this out. Rearrage the following equation and hence state the gradient and the y-intercept. 2y = 8x + 10 Do i just go: y = mx + c 2y = 8x + 10 y = (8x + 10) /2 y = 4x + 5 or do i have to rearrange it ...

Math (Algebra/Pre-Algebra)

Ms. Caswell deposits $450 into an account earning 8% interest per year. How much simple interest is earned after 4 years? Please explain.. I'm supposed to show work =] thank you!

maths

how to work out partial fraction decomposition when given 1/x(x^2+1) and 2x-1/(x+4)(x-3) if you could give me an idea of the formula and what changes i need to make to the formula when the denominator changes that would help and please use idiot speak because the text books ...

Physics-Help Please!!!

A 31.0 kg crate, initially at rest, slides down a ramp 2.6 m long and inlined 14 degrees with the horizontal. Using the work-kinetic energy theorem and disregarding friction, find the velocity of th crate at the bottom of the ramp

math

Use the five steps for problem solving to answer the following question. Please show all of your work. The volume of a rectangular box is limited to 1100 cu. in. If the height is 8 inches and the width is 10 inches how long can the box be?

p

you visit the grand canyon on a particularly hot day and like all good tourists, you yell, Hello! Would you expect to hear the echo sooner or later than on a cooler day? Why? please show all work Thank you

Algebra

Solve. Please show the algebraic inequality you used and show all of your work. Stephanie has the following scores on her algebra tests: 85, 92, and 71. What score must she earn on her fourth test in order to have an average of 80 or above?

pre-algebra

Solve the problem. Please show all of your work. A driveway rises 11 feet over a horizontal distance of 112 feet. Find the slope of the driveway. Round your answer to two decimal places.

Physical Science

Two carts ( a's mass = 4.5 kg and b's mass = 1.5 kg) are held against a strong compressed string. The carts are released simultaneously, and B moves off to the right wqith a speed of 2.0 m/s. What is A's initial velocity? Please show work.

Pre-Calculus

Can you show me how to find the rectangular equation: r=2cos(theta) + 3 sin (theta) All I need is an example to work off I was absent today from Pre-Calc and I have homework to do and no explanation with them-Please help with this one Thank you

geometry

A slide 4.1 meters long makes an angle of 35 degrees with the ground. To the nearest tenth of a meter how far above the ground is the top of the slide. Could someone please explain don't want just answer would like to know how to do the work.

Math

Please explain how this is set up and how to work it. thanks A rectangular box is 4cm wide, 4cm tall, and 10cm long. What is the diameter of the smallest circular opening through which the box will fit? Round to the nearest tenth of a centimeter.

math exam tommrow review

an amusment park recorded attendence of 825000 one year. the next year attendance was 975000. what was the percent increase in attendence. please show work/walk through process.

Physics

A cannon is fired horizontally from atop a 40.0 m tower. The cannonball travels 180 m horizontally before it strikes the ground. With what velocity did the ball leave the muzzle? Okay so this is my work for this problem. please help If I did something wrong. Thanks! 40=1/2(9.8...

Help Needed for PreCalc

List all points on the graph of y=tanx on the interval [π/2,3π] that have a​ y-coordinate of -1/radical3 (Type ordered pair) Please teach me and show step by step work so i can learn. Thank you.

English (Please Check My Work)

(Can someone please check my work.) 1. Read the following passage found in From Emperor to Citizen. From my infancy I was accustomed to having people kowtow to me, particularly people over ten times my own age. They included old officials of the Ching Dynasty and the elders of...

check over--

this is a book review for 9th grade honors english. does it look OK? are there any errors or anything? thanks-- The novel Dairy Queen by Catherine Murdock is the story of 15-year-old D.J. Schwenk who lives in Red Bend Wisconsin. Her father gets injured and can no longer take ...

physics

I calculated parts a, b, c, but cannot figure out d. I tried combining all the forces and adding them but I am missing something? There is an 18 kg box on a 32degree incline. a HORIZONTAL force of 150 N is given to the box a) How much work is done by the horizontal force F = ...

Math (Trig) a.s.a.p, thanks!

verify the identities: 1.) 2tanx-(1+tanx)^2 = -secx 2.) cos(x-330degrees)=1/2(ã3cosx-sinx) *the ãis only over the 3* 3.) 1+cos2x/sinx=cotx any help is greatly appreciated!!

trig

Solve the given triginometric equation analytically. Use values of of x for 0 less than or equal to x less than 2pi sin^2x - 2sinx = 1 How do I get towards the answer of 3.569, 5.856 Thank you again

Algebra 2 / Trig

Here is the problem that I'm having trouble with: Rewrite each series in a sigma notation and find its sum. 1+.09+.81+... I have no idea how I find the common difference or ratio in that one.

trig

Give the measure of the acute angle with each given value to the nearest tenth of a degree. cos A = 0.1 (84.3 degrees) sec D = 1.8 (65.3 degrees) That is all it gives :( How would I go about solving this?

Trig/Math

Find all the points having an x coordinate of 2 whose distance from the point (-1,-5) is 5. so far i have 5=sqrt((-1-2)^2+(-2-y)^2) 5=(-3)^2 how do i simplify the rest of the equation so i can find x. do i foil it out? thanks.

Trig

How do you express these problems as single trigonometric function values or as single numbers, using identities? 1. cos^2pi/8-1/2 2. tan34degrees/2(1-tan^2 34degrees) 3. 1/8sin29.5degreescos29.5degrees

Trig

How do you express these problems as single trigonometric function values or as single numbers, using identities? 1. cos^2pi/8-1/2 2. tan34degrees/2(1-tan^2 34degrees) 3. 1/8sin29.5degreescos29.5degrees

trig

2. A circle has a radius of 10 centimeters. Find the length, in centimeters, of the arc intercepted by a central angle of 100 degree. (A) 50pi/9 (B) 100pi/9 (C) 500pi/9 (D) 18pi/5 (E) None of the above.

Trig: Conics

Sketch the graph and find following info: Vertex: Focus: Directrix: Axis of Symmetry: Ends of Latus Rectum: (x-2)^2=4(y-3) I think the vertex is (2,3) is this correct, and how do I proceed on? Thank you!

trig

Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

trig

plot of land ABCD such that AB = 85m, BC = 75m, CD = 60m, DA = 50m and angle ACB = . Determine the area of the plot in hectares correct to two decimal places

Math (Trig)

Find the indicated ratios in the triangle. Right triangle with a height of 2.56cm length of 4.65cm and hypotenuse of 5.31cm a. tan A b. cos C c. sin C How do I figure this out?

trig

Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest degree, if necessary. cos θ = 0.9659 A = ? H = 20

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