Trig check my work please?

88,487 results, page 85

trig

ABC- with angles AB, and C and sides AB,BC, and AC, angle B is right 90degree angle, if sin of angle A is 0.5, side BC 8in., what is length of AC

TRIG

the population of a certain city is 1.3 million people. if the population is growing at the rate of 4% per year what will the population be in 8 years

Trig

suppose tan theta equal 4 and theta lies in the third quadrant. find the values of sec theta

Trig

A vertical tower is on a 12° slope. from a 50 m down the hill, the angle of elevation of the top of the tower is 30°. find the height of the tower

Trig

Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2

Trig

Find all values of theta where 0degrees<theta<360 degrees when csc theta = square root 2

Calculus

S=integral sign S3x(4-x^2)^1/2 use trig substitution I am confused I got x sin(sin^-1(x/2))+cos(sin^-1(x/2))

math word problem

the boiling point of water 212 degree f. this is 180 degree more than its freezing point. define the variable. then write and solve an equation to find the frezzing point of water. show your work. the variable would be: d could be the variable. f + 180 = 212 degree f+180 -180...

Chemistry

What is the percent by mass of C in methyl acetate (C3H6O2)? The molecular weight of carbon is 12.0107 g/mol, of hydrogen 1.00794 g/mol, and of oxygen 15.9994 g/mol. Answer in units of %. Please work it out for me so I totally understand it. Thanks!

English

Which of these is the properly punctuated sentence? a)Ted went to work and Bob went home. b)Ted went to work; and Bob went home. c)Ted went to work. And Bob went home d)Ted went to work, and Bob went home. Would the correct answer be D?

Prime Factorization

What is the prime factorization of 1,521? Please show work. Thanks!!

Algebra

please help me to figure out in algebra 2/3-4/5-(-11/15) +7/10-5/2 the answer is 6/5 and I do not know how to work this out

chemistry

N2 + 3H2 --> 2NH3 how many grams of hydrogen are needed to react with 50 grams of nitrogen? Three moles of H2 per one mole of N2. How many moles of N2 is 50 grams? 1.79 moles is 50 grams. You do these problems in steps. Step 1. Write a balanced chemical equation. You have ...

Spanish

Which of the following is NOT a difference between schools in Puerto Rico and schools in Los Estados Unidos? A. Classes are conducted in spanish B. Students wear uniforms*** C. There are homeschooling options D. Students study both Spanish and English Can some one help to ...

Math

Check my answers please. 1. What is the solution to 5 + t = 23 a. 28 b. 18 ** c.-18 d.-23 2. What is the value of b if -7 + b = -8 a. b = 15 b. b = 1 ** c. b = -1 d. b = -15 3. What is the solution to 5q = -75 a. q = -25 b. q = -15 c. q = 15 ** d. q = 25 4. What is the ...

trig help

I need help finding sinA if cosA=(-3/5) and A is greater than 90 degrees, but less than 180 degrees. Draw the quadrant diagram. In the upper left quadrant, greater then ninety degrees, but less than 180, cosine is neg, and sine is positive. Draw a three, four, five right ...

English

Can someone suggest any poems that somehow encapsulates the sentiments of Huckleberry Finn" by Mark Twain? I know of none, but one process you can use that MIGHT work is this: Go to http://www.quoteland.com and wander around until you find something that resembles something ...

physics

A 400g glider moving to the right at 2 m/s collides elastically with a 500g glider moving in the opposite direction at 3 m/s. find the velocity of each glider? please show work so i can understand it! thanks

Exploring Space

rocket engines which work in space still need oxygen 4 the fuel to bur. space is a vacuum. where does the oxygen come from? I'm stumped on this, can someone please lend me help, thanks

Math

3) Explain how the laws of exponents work with rational exponents and give at least one example of an expression containing rational exponents... Please help.. I can't find the answer to this anywhere..

Chemistry

N2+O2 <-> 2NO Equillibrium Concentrations of the gases at 1500K are 1.7x10(-3) mol/L for o2 and 6.4x10(-3) mol/L for N2 and 1.1x10(-5)mol/L for NO. CAlculate the value of Kc at 1500K for these data? Show work please

Physic

The position of a mass on a spring is given by x = (7.6 cm) cos [2 π t / (0.82s)]. Where is the mass at t = 3.1 s? (Answer: 1.45cm) Answer is provided above. Please show all work on how to get the answer. Thank you.

dog behavior

please check my answer thanks so much :) Which one of the following commands is most like a safety net for a dog? A. Controlled walking B. Leave it C. Heel D. Emergency down I am not sure At first I think it would be B because it would stop the dog from maybe eating something ...

algebra

Megan factored the expression3x^2-23x+14 as (x-2)(3x-7) . But when Jacob applied the FOIL principle and multiplied out (x-2)(3x-7) , he got 3x^2-13x+14 ; thus, Megan’s solution does not appear to check. Why is that? Please help Megan to understand this better. Explain your ...

Chemistry(Please check)

1) Which of the following properties of water can be explained using hydrogen bonding arguments? 1. its ability to dissolve most ionic compounds. 2. its high boiling point. 3. its low vapor pressure a) only 1 or only 2 or only 3 b) 1 and 2 only c) 1 and 3 only d) 2 and 3 only ...

Physics(Please check)

A rectangular plate is rotating with a constant angular speed about an axis that passes perpendicularly through one corner, as the drawing shows. The centripetal acceleration measured at corner A is n times as great as that measured at corner B. What is the ratio L1/L2 of the ...

English

Let's write down what you can do with the computer. 1. I use the computer to chat with netizens in chatrooms. 2. I use the computer to do paper work. 3. I use the computer to make documents with the word processor, Excel. 4. I use the computer to surf the Internet. 5. I use ...

Physics please check

A cyclist approaches the bottom of a gradual hill at a speed of 14 m/s. The hill is 4.9 m high, and the cyclist estimates that she is going fast enough to coast up and over it without peddling. Ignoring air resistance and friction, find the speed at which the cyclist crests ...

English

Could you check this? Complete the questions. I wrote my answers with capital 1. Researchers are SUPPOSED TO BE VERY careful when working in the lab. 2. They ARE SUPPOSED TO CHECK and recheck dangerous experiments. 3. They are SUPPOSED TO THINK before acting impulsively. 4. ...

English

How have the definitions of work, success, wealth, opportunity, and family changed over time? what does this question mean? how do you write your opinion? You might consider these questions: Is work what you get paid to do? Is work what you accomplish? What is work? Is success...

Math

An electrician charges $120 after 2 hours of work and $190after 4 hours of work .write a linear model that represents the total cost as a function of the number of hours worked

English

Can you please check my sentences? Thank you very much for your invaluable help. Which sentence (2 or 3) paraphrases the concept of sleep? 1) Sleep is imagined as a bath after heavy work, in which the body can relax and recover from injury. 2) Sleep is then compared to a ...

Calculus (area of base and volume of solid)

Can you check my work and see if I did the problem correctly? Thanks! A solid with a base formed by intersecting sine and cosine curves and built up with semi-circular cross-sections perpendicular to the x-axis. Find the area of the base and the volume of the solid. Integral...

math 012 double check me please

9x+3(x-4)=10(x-5)+7 9x+3x-12=10x-50+7 12x-12=10x-43 subtract -12 from both sides and that leaves -12=-2x-43 add 43 to both sides and that leaves 31=2x then the answer is x=31/2 (a fraction) im so confused and its even harder trying to type it out and not confuse anyone reading...

chemistry

please check my answer(one with star). The solubility of borax is directly proportional to temperature. Therefore, the sign of H is A. negative* B. positive C. unknown with the given information since solubility shifts the reaction to the right, therefore it is exothermic so H...

math

In bowling, a handicap is determined by subtracting your bowling average from 180 and then finding 80% of this difference. Freddie bowls games of 178, 156, 149, 155, 172 and 180. Freddie's handicap is__________. I came up with 12. Could you check if this is correct please? ...

Chemistry Check Please!!!

Using a table of standard electrode potentials (as in Appendix M of your text), calculate the standard cell potential, Eo, for: 2 Fe2+(aq) + Cl2(g) 2 Fe3+(aq) + 2 Cl(aq). Answer: Anode: 2 Fe2+ 2 Fe3+ + 2 e Eox = 0.771 V Cathode: Cl2 + 2 e 2 Cl Ered = +1.36 V Enet = +0.59 V

science (check please (:)

8.Which of the following would help decrease the human ecological footprint? . . . . . . . . . . . . . . . My answer: using public transportation instead of riding in a car? (I have doubts on my choice) but my other choice is using bottled water instead of tap water?

History

Check this please~?~?~ 1. C,A,D 1.Which are correct definitions for history? Choose all answers that are correct. A.the study of human adaptation to the environment B.the story of how the world has changed and how it has not changed much at all C.a retelling of what people did...

Math

please check my answer thanks :) Mike purchased a home the mortgage is $235,000 at 8 3/4 % for 25 years. His annual property taxes on the home are $6,345 he also has to pay hazzard insurance in the amount of $1,479. What is the PITI payment of their loan ? I am not to sure ...

Grammar and Composition

Please check these for me: Write the plurals of the following singular words. 1. hero : heroes 2. sheep : sheep 3. sister-in-law : sisters-in-law 4. journey : journeys 5. princess : princesses 6. spoonful : spoonfuls 7. victory : victories 8. stepchild : step children ? 9. ...

English

Can you check the grammar in these two sentences, please? Thank you. 1) Best would be to know the name of the principal "and" the teacher who is designated with these programs; if I find that information I post it to you. 2) Addressing both would be considered as very polite ...

geography

Will you please check my answers? 1.What states border Lake Michigan? Wisconsin, Illinois, Indiana, and Michigan 2. How many states are on the 60 degrees N line of latitude? Just one state ( Alaska ) 3. What do the following countries have in common: Chad, Paraguay, Hungary, ...

math

Can someone please check my answers and help me with the last question! 1. Solve sin2xcos2x = 4sin2x on the interval [0, 2pi] 0, pi, 2pi? 2. Exact value of sin(pi/12) - sin(5pi/12) root3/4? 3. Using factorial notation, 0! = 1 False? 4. Find the area of the following triangle. ...

algebra

I just need a quick check before I hand in my work if you would...Thanks. 1. I am to use the intercepts to graph the equation x+3y=6 I used the formula y=mx+b using 3 and -6 for x I got these as my ordered pairs to graph (3, 1), (-6, 4)…Is this correct? 2. Multiply -2/1*(-6/...

check my work

1. Which of the following provides the best definition of a strict constructionist interpretation of congressional power? (1 point) Congress must have more powers than the states. Congress should only use implied powers when directly connected to expressed powers. Congress ...

trig

A plane ascends at a 40° angle. When it reaches an altitude of one hundred feet, how much ground distance has it covered? To solve, use the trigonometric chart. Round the answer to the nearest tenth.

Math: Calculus

Find the smallest positive value of which satisfies -- x=4.100cos(2.800x) Give the answer to four places of accuracy._________ Remember to calculate the trig functions in radian mode.

Trig

I need help, I don't remember what to do. Find all solutions of the equation in the interval [0,2pi]. (2cosè+sqrt3)(cscè+1)=0 Write your answer in radians in terms of pi. If there is more than one solution, separate them with commas.

TRIG

1) Find an angle that makes the statement true: costheta =sin(3theta+10degrees) 2) Verify this proof: sec(Pie -x)= -secx Can someone show me how to solve for these. Very much appreciated!

trig

Let P be the point on the unit circle U that corresponds to t. Find the coordinates of P and the exact values of the trigonometric functions of t whenever possible. 2pi 3pi/4 5pi/6 Three questions. I think those are supposed to be t.

Math:Trig.!!!!

You (safely) bungee jump from a 200-feet tall bridge in your town. Your distance above the water's surface depends on the time since you jumped. Sketch a reasonable graph.

English

Please check for any errors and correc them. Thanks!!! As we discussed, I have made reservations for three days for a sweet of rooms at the North British Hotel in Glasgow Scotland. There are three connection rooms in the sweet. It should suite your needs quite satisfactorily. ...

physics again (check answers please)

What net force increases a velocity of a car from 20 m/s to 35 m/s in 8.0 s if the mass of the car is 1600 kg? (3000 N). What force would cause the car to stop? (3000N) What coefficient of friction is needed to supply the force of friction? (.0191) are they correct?

Math - check my answers :)

1. Find the amplitude, if it exists, and the period of y=tan 1/4È Answer: No limits in amplitude, y=tanÈ/4 period is 4pi 2.Solve x = Arctan(-sqrt3) Work: Pythagorean theorem: sqrt(1^2+3)= sqrt4=2 in length. Triangle is 1, sqrt 3,2 Answer: -60° 3. In triangleABC, A = 35°, a...

Math

The height was 30, the width was 25,and the length is 20. What is the volume, in cubic inches, of the block of ice? I think you multiply 30x25x20 and get 15,000. The answer is 15,000 cubic inches. Harry wants to make another block of ice with the same volume. He needs one ...

Social Studies

Buddhism became popular in part because it did not defend.... 1. dharma 2. the Hindu gods 3. the caste system**** 4. life after death This religion believes that the way to stop suffering is to stop desire 1. Buddhism*** 2. Judaism 3. Hinduism 4. Jainism This religion believes...

Math

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for to days , then the fraction of the work ?

Math

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for 4 days , then the fraction of the work ?

Math

Bilawal can build a wall in 15 days and Bilal in 20 days. If the work on it together for 4 days , then the fraction of the work ?

Science

You do 100 J of work in pulling out a nail with a claw hammer. If the hammer does 70 J of work, what is the hammer's efficiency?

Reading Comp.

When we have too much work to do we become very anxious It is vital to set priorities and work on the most important things first. What does the second sentence do? a. It gives an example b. It makes a contrast c. It proposes a solution* d. It states an effect

statistics

Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 50 percent of SOC 390 students work more than ____ hours per week

SS

Kevin decides to go straight to work after high school instead of college. What is the most likely long term consequence of this decision? a)changing jobs often b)making less money c)having lots of debt d)not finding work Is it b?

Social studies

3:Which incentive is non-monetary A:flexible work hours B:buying a suit on sale C:getting cash-back rewards for making purchases with a credit card D:being paid a bonus for dressing well at work I think it might be D?

Check this please?

I am writing about how different groups view the role of the government. I saw this online and wanted to use it to guide me through my essay, but wanted to check its accuracy because I thought Democrats weren't for higher taxes I thought Republicans were. Those in favor of a ...

trig

how do you solve cot theta divided by csc theta is equal to cos theta?

Trig Identities

If tan(theta)=7/13 and cos(theta)<0, what is the exact value of sin(theta)?

trig

Given that tan 45=1, use tan(x+y) to show that tan 22.5= /2 - 1. (/is square root sign

trig

If sinθ>0 and tangθ<0, explain how to find the Quadrant in which θ lies.

trig

If a and b are the measures of two first quadrant angles and sin a = and sin b = , find sin (a + b).

Trig

How do I find the quadrant in which angle thada may lie if cos thada > 0 and tan thada < 0?

trig

How do I name the quadrand in which angle thada may lie if sec thada > 0 and tan thada > 0?

Trig

Given sin theta = -3/5 and 0 is in quad 2, find Cos theta and tan theta

trig

for what values of theta between 0 and 2 pi is the function of theta equal sine theta positive?

trig

What does sin(squared)t + cot(squared)tsin(squared)t equal? and can someone explain it?

trig

If theta is a standard position angle and cot theta = 1.85, in which quadrant(s) could theta lie?

Trig.

I'm trouble solving for theta. Any help is appreciated. 0.73377324 = sin(theta)/cos(theta)

trig

if 5sin theta + 12cos theta is equal to 13 find the value of tan theta

Trig help

1. What is the period of the function? y = 4 cos pi x A. 1 B. 2 C. pi D. 2pi 2. Which represents the reference angle for 2pi/3? A. 2pi/3 B. pi/3 C. pi/4 D. pi/6

English

1. You can check prices for bicycles on the Internet. 2. You can check prices about bicycles on the Internet. -------------- Can we use 'for' and 'about' in the sentence? Which preposition is commonly used? Can we use some other expressions for 'for? Concerning, regarding...

Physics

so I'm doing the back of this worksheet and on the bottom there's a list of a whole bunch of formulas... I'm asked to find the minimum coefficent of friction if the road was flat of a car which I still don't know how to do and posted a question about it below but anyways... so...

NHD (Social Studies)

Please help me out on answering this question: For a working bibliography, how is a title for a website cited? Thank you tutors for reviewing the question. I might have more social studies questions and then algebra questions, so if you see more questions under the subject NHD...

physics

A truck in driving up the interstate with a constant velocity. Is work being done by a net external force acting on the truck? Justify answer. Why doesn't the work done by the engine pushing it forward make its kenetic energy increase?

Trig

Evaluate the trigonometric function using its period as an aid. cos 5pi how would i go about finding the period and what is a period?

trig

simplifying trigonometric expression a) sinx/tanx cosx b)sin^4a + sin^2a cos^2a c)sin0-sin0cos^2+ / sin^20 could someone help me with these?? thank you

trig

If the point (-3,0) lies on the terminal side of angle theta in standard position find: a) csc theta b) cot theta

trig

Use a calculator to find: θ if θ = csc-1 1.7516. θ = _____°. Round to three decimal places.

trig

Two oil Wells are 4 km and 6 km from the river. The points along the river are 8 km apart. Find the common loading point on the river.

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. ÄU = Q - W Where ÄU is the change in the internal energy of the system, Q is the heat/energy gained from ...

ALGEBRA 3

so wat do u mean by that WHICH ORDERED PAIR IS A SOLUTION OF THE FOLLOWING SYSTEM OF LINEAR EQUATION 2X-5Y=NEGATIVE 12 NEGATIVEX +4Y=9 A{NEGATIVE6,0} B{3,3} C{NEGATIVE1,2} D{2,2} I will be happy to critique your thinking on this. I mean I wont do your homework/tests for you, ...

English

Can someone please me with this. Improving Your Writing. Section 1 Facts and Figures that define the problem (the cause) Details that show the impact of the problem (effects) on Jack, Ruth, and the company. Section 2 The steps needed to change the situation Reason to implement...

English composition

I bought a pedometer on the Auction site on-line, so I can measure my steps. If I walk for 10,000 steps a day, it will be helpful for my health. This product was made in China, and it is 1,500 won. It is inexpensive. Because I can check how many steps I can walk, it will be ...

math

Peter received a six month post dated check for Php 100,000.00.(The check can only be cashed after six months.) He offers it to his friend for Php 92,000.00. His friend's money is presently earning 10% compouunded monthly. If there is 20% withholdingtax on interest, which is ...

Simplify 2

Simplify the equation. 〖19〗^(1/2)∙〖19〗^(1/2) I simplified it and I got 19. I used the equation that Steve did to solve the other one in Simplify. Please check, and see if I am correct. I will appreciate it.

French

Please check these sentences for grammar. 1. Ils aiment (or aiment bien) aller à l’école. 2. Tu n'adores pas lire de les romans. 3. Ils n'aiment pas manger de les chocolats.

math

you work at a grocery store. your hourly wage is greater after 6pm than it is during the day. one week you work 20 daytime hours and 12 evening hours and earn $280. another week you work 30 daytime hours and 12 evening hours and earn a total of %276. what is your daytime rate...

math

Please check. (4xy^2)(3x^-4y^5) = 12x^-3y^7 (2x)^5 (3x)^2 = 288x^7 (-3x^2)^4 = 81x^8 True or False: the set of integers is a subset of the set of natural numbers. False All numbers are real numbers. True

Algebra

Can somebody please help me with solving this and show steps if they can. Solve the equation. Check for extraneous solutions. 9|9-8X|=2X+3 For my answer I got X=-1 I divided by 9 on both sides I got 8X=2X-6 Then I divided by 6 on both sides and got X=-1

Math (please check my answer!!)

What other information is needed to prove that the two triangles congruent by SAS? Picture description: there are two triangles showing line LT = line MQ and L=M A. <T = <Q B. <G = <N C. Line GT = line NQ << D. Line LG = line MN

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