Trig check my work please?

88,487 results, page 53

trig

Solve exactly over the indicated interval: 2sinx+cscx=3, 0<theta<360

math trig

If a ferris wheel has a radius of 20.5meters, how tall would a 45 degree angle be?

trig

for the given angle, name the quadrant in whihc the terminal side lies. -350deg

trig

Find all real numbers in [0, 2π) that satisfy the equation. cos 2x = √(2)/2

trig

Find all values of ¸ in [0°, 360°) that satisfy the equation. 2 sin 2θ - √(3) = 0

Math - Trig

Explain why we cannot solve an oblique triangle with the Law of Sines given SAS.

trig

If $5000 is invested at a rate of 3% interest compounded quarterly, what is the value of the investment in 5 years?

Trig

given that sinx=3/4 and cosy=-5/13 and both x and y are in quadrant II, find the exact value of cos(x-y)

Inverse Trig

How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi

trig

Given that cos A = 5/13 and A and B are both acute angles, calculate the value of Sin2A and Cos2A

Pre-Calc/Trig...

am i correct? What is the axis of symmetry for the graph of y=2x^2-4x+2? x=? the line goes through 1? x=1

trig

Find all angles è between 0° and 180° satisfying the given equation. cos è = 1/9

calc/trig

A 84-ft tree casts a shadow that is 130 ft long. What is the angle of elevation of the sun?

Pre-Calc/Trig

Describe the end behavior for function by writing a limit expression. f(x)=2x^5-x+7

trig

prove that the equation 2sin x cos x +4cos^2 x =1 may be written in the form of tan^2 x -2tan x -3=0

Pre-Calc/Trig

write an equation of the conic section: a hyperbola with vertices (0,-6) and (0,6) and asymptotes y=(3/4)x and y=(-3/4)x

trig

find the exact value of each expression. do not use a calculator. Sec 3.14/4 + 2 csc 3.14/3 4 + tan 2*3.14/3

Purdue Trig

A spherical balloon is being inflated so that radius is increasing at a rate of 10 mm/sec.

trig

half angle formula to find exact value cos 112.5 degree

MAth Trig

Find the diameter of a circle with an arc length of 32 cm and a subtended angle of 72 degrees

Trig

Find the approximate value of cot θ​, given that csc θequals=3.5891420 and θ is in quadrant I.

Trig

In which quadrant would the image of point (5,-3) fall after a dilation using a factor of -3?

algebra help please

The area of a rectangle of length x is given by 3x^2+5x find the width of the rectangle a=l*w =x*(3x+5) I stoped here I am not sure if I am correct i was taken the 3x+5 as the width and x as the length but i am not sure if the 3x+5 should be the area and divid by x the length ...

Chemistry

I'm trying to find if potassium nitrate is polar or non-polar by using the electronegativity scale. Can someone check my work? Electronegativity: potassium: 0.82 nitrogen: 3.04 oxygen: 3.44 =3.44-3.04 =0.82-0.4 =0.4 =0.42 So the final answer is 0.42 and by looking at the ...

maths..HELP!!

this is a question i don't understand..please help! "JAMES GETS £5 POCKET MONEY A WEEK. HE SAVES £1.50. HOW MUCH DOES HE SAVE OVER 6 WEEKS? IS IT £9? y = 1.5x, so ya 9 seems to work. thanks for the help Yes, 1.50 x 6 = 9

calculus

The volume of a right circular cone is given by V=(1/3)3.14r^2*h, where r is the radius and h is the height. Find dV/dt if r=4, h=5, dr/dt=6, and dh/dt=-3 Please try to show as much work as possible

Calculus

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y=ln x, y=0, x=1, x=3 Please show the steps in your work, thanks! :)

Calculus

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y=ln x, y=0, x=1, x=3 Please show the steps in your work, thanks! :)

APChem

does anyone know a good website i could look at so i could answer this question: ? Explain how indicators work using a chemical reaction as part of your explanation. Any websites? please? thank you!!

kwame nkrumah university , ghana

the impact of the 3.5g technology on the computer and human production.its a project work and am supposed to present it in the next 24 hours .please help me.

english

Is it ethical telling an associate and close friend that she should pay more attention to her work responsibilities, or management will fire her please explain why?

physics help please

question # 1 :Estimate the work you do to mow a lawn 13m by 23m with a 60cm wide mower. Assume you push with a force of about 15 N

ALGEBRA 117

HI I am stuck on how they work this one problem S= 4m how fast was the car travling to have skid maks of 121 feet can someone help me please

college algebra

solve the following inequality. write the answer in interval notation x^3-4x^2-21x<0 please show work so i can understand this problem better! thanks

Algebra

.428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work. Thanks:)

Algebra

.428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work.

chemistry

joules needed to melt a 525 g ice cube at 0 degree C and to warm the liquid to 15 degrees C (two steps please show work)

college algebra

find the complete zeros of the polynomial function. write f in factored form. f(x)=x^3-7x^2+25x-39 please show all work. I do not understand this.

calculus

I need help solving the following problem. Could someone please help me and explain how to work the equation. Thanks in advance. [intergral x sqrt3x dx I hope this makes sense

Calculus

Find the instantaneous rate of change of V with respect to r when r=100 V(r)=.2r^2-20r+600 using limit definition. Please show work for understanding, thank you :)

Chemistry

Identify the atom that increases in oxidation number in the following redox reaction. 2MnO2 + 2K2CO3 + O2 2KMnO4 + 2CO2 *A.) Mn B.) O C.) K D.) C Please show work Thank you.

Algebra 2

Using the integers 2,3,4,5, How many 3-digit odd numbers less than 300 can be formed if no repetition of digits is allowed? Please explain and show work.

Algebra2...........

Using the integers 2,3,4,5, How many 3-digit odd numbers less than 300 can be formed if no repetition of digits is allowed? Please explain and show work.

Algebra 2

Using the integers 2,3,4,5, How many 3-digit odd numbers less than 300 can be formed if no repetition of digits is allowed? Please explain and show work.

polynomials

can someone please help me with this problem I have to get the sum diff and product I keep trying to work it out but i really think im blowing it. x^3- ¡¼2x¡½^2 + 3x-1 ¡Ã x^2- x+4

Chemistry test help please

How many liters of chlorine as can be produced when 1.96 L of HCl react with excess O2 at STP Show Work A.0.49L B.0.98L C.1.96L D.3.92L

Math (Elementary Algebra)

What is the value of the expression 2x^2 + 3xy - 4y^2 when x = 2 and y = -4 ? Please help this is for my accuplacer. If you could show your work explaining how you got the answer that would be awesome. Thank you in advance

Pre-Calculus

Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists. Show your work. 4x - y + 3z = 12 x + 4y + 6z = -32 5x + 3y + 9z = 20 Please help me..

English

Write a well organized essay in which you show how the characters relationship to the past contributes to the meaning of the work as a whole. My Question: What is it asking for?? Explain in Details Please

Management Accounting

well i try to solve this problem but it look so complicated I need to cash buget what's the problem? check the problem i don't get it check the problem i don't get it

english grammar

I already answer the grammar exam of 100 question, now I want to check my answers if it is correct or not. How can I check my answers.

Foreign languages

Can you please check if the following examples containing phrasal verbs are possible? Thank you, Writeacher. 1) She sent her children off to school. She had to change a tyre, but she didn’t know how to set about it. (+ ing) 2) The carpet has worn off. After an hour the pain ...

math

can someone check my answers please add -3/5 +(8/35) = -13/35 find the reciprocal of 1/3 (9-4)= 5/3 subtract 7/9-(-13/18)=3/2 find the reciprocal of -1/9(-9-3)=4/3

Math(Please check answer)

Simplify each expression. 1)(sqrt7 + 5)(sqrt7 -6) My answer is sqrt 7 - 30 Am I correct?

Algebra2

Check Please? Determine if the given function is even, odd or neither. 1. f(x) = 3x^4 - 2x^2 =Even. 2. f(x) = x^3 + x = Odd.

Chemistry II

Hydrochloric acid (77.0 mL of .267 M) is added to 236.0 mL of .0730 M Ba(OH)2 solution. What is the concentration of the excess H+ or OH- ions left in the solution? Done two of these. They are all alike. Use the template from the previous problem. Post your work if you get ...

physics

Im confused! How would you calculate the work done by a plane? I know work= f d, i just don't know how to get the force and distance!

science

how much work is required to pull a sled if you use 60j of work in 5 seconds

Physica

How much work is done by a person lifting 2 Kg object from a bottom of a well at constant speed of 2 m is ( work =...... kj )

Management

operational planning sets up work schedules, routine work procedures, and timetable

Math

Mark finished 3/5 of his work in 15 mins how long will it take to finish all of his work?

Math

Mark finished 3/5 of his work in 15 mins how long will it take to finish all of his work?

Math

Mark finished 3/5 of his work in 15 mins how long will it take to finish all of his work?

physics

Guy has to get a piano onto a 2.4 m high platform. He can use a 3.0 m long frictionless ramp or a 4.0 m long frictionless ramp. Which ramp will Guy use if he wants to do the least amount of work? Either ramp as the work done is same in both cases. The shorter ramp will require...

Spanish-SraJMcGin please help ?

I'm so confused with these-please check them. ¿Estudias algo los sábados? No, no estudio nada los sábados.Do I need the no, no or just one no, estudio? ¿Hablas a francés a veces? No, no hablo nunca a francés. Once again, do I need no, no hablos or just no, hablo nunca?

algebra

Complete the following word problems. 14.It takes 9 hours for Isabella to rake leaves by herself,but her brother Matthew can work three times as fast.If they work together, how long will it take them to rake leaves? Rate Time Work Done Isabella Matthew

Programming Logic

How do I write case logic pseudocode and visual logic nested if-then-else flow charts for atm check balances, making remote photo capture check deposits, and perform balance transfers?

"Y912f", please givethis note to your pare

"Y912f", please give the follow note to your parents. Dear Parents of Y912f, Your daughter has been receiving help from Jiskha for quite some time. Our task on this site is to "help" students learn, not do their work for them. It has become obvious that "Y" needs additional ...

physics

A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...

Physics

A 57.5-kg skateboarder starts out with a speed of 1.80 m/s. He does +80.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -265 J of work on him. In both cases, the forces doing the work are nonconservative. The final speed of the ...

Trigonometry

Find cotangent theta given that cosecant theta equals -3.5891420 and theta is in the third quadrant. I was using the trig identity 1+cot^2theta=csc^2theta I wanted to isolate cotangent so I plugged in 1/sin (-3.5891420) and then squared my answer. I then subtracted one from ...

physics

A 800kg , light-weight helicopter ascends from the ground with an acceleration of 3.00m/s2 . Part A Over a 6.50s interval, what is the work done by the lifting force? Part B What is the work done by the gravitational force? Part C What is the work done by the net force on the ...

Math

please help me I am not really sure about this please check answer thanks :) Mary has decided to purchase furniture. She has 2 choices she can pay the full amount of $4,200.The other choice is to finance the furniture for two years with an installment loan. The loan requires a...

soc. stud. --- check my work pls!!!

hi, can someone check my work asap!?? 1. During the election of 1824, which candidate won the popular vote and which candidate won the presidency? (1 point) Andrew Jackson; John Quincy Adams*** Andrew Jackson; Andrew Jackson John Quincy Adams; John Quincy Adams John Quincy ...

Physical Science [repost]

Can someone please check if my answers for these questions are correct? Thanks! 1.Explain in terms of force and distance how using a ramp to load boxes into a truck makes work easier. (Ans-) Less force is applied but the distance is longer. 2.A ball sitting on the top of a ...

Math/Calculus

Please take a look at my work below and provide a good critique: Solve the differential equation using the method of undetermined coefficients or variation of parameters. y'' - 3y' + 2y = sin(x) yc(x)= c1*e^2x+c2*e^x y"-3y'+2y=sin(x) r^2-3r+2=0 (r-1)(r-2)=0 r1=1, r2=2 yp(x)=...

Math

3 men and 4 boys can do a piece of work in14 days , while 4 men and 6 boys do the same work in 10 days . How long would it take one man to finish the same work?

Physics

A certain amount of work is required to stretch a spring from its equilibrium position. (a) If twice the work is performed on the spring, the spring will stretch more by a factor of (1)square root of 2 (2)2,(3)1/square root of 2, (4)1/2. Why? (b) If 100J of work is done to ...

physics

In terms of given quantities, by what amount of time, , does Tim beat Rick? It will help you check your answer if you simplify it algebraically and check the special case . Express the difference in time, in terms of , , and .

math

The estimated completion time for a inspection consisting of 100 check points is 3 1/3 hours if u take away 3hours whats the estimated rate of completion per check point

English

Could you please check these few sentences for me, please? Thanks 1) He is ambitious and thirsty for power. He turns into a murderous tyrant as a result of his ambition. 2) A vote was taken (do you know a synonym) in the late afternoon. On July 4 (on July fourth) but on the ...

Law

If the result of a case is that the defendent has to go o jail for a year then it was likely a malpractice case true or false I said True please check my answer thanks :)

Anatomy and Physiology

PLease check my answer thanks The burn that involves destruction of the epidermis,dermis and subcutaneous layers. My answer A thrid degree burn

Meicare reimbursement

please check my answer thanks True or False A provisionally accredited hospital gets medicare reimbursement so that it can stay open True

maths

decide whether the graphs of the two equations are parallel lines: 1. 2x+3y=5 9y+6x-1=0 answer: yes 2. 15+3x-10y=0 30x+24=10y answer: yes please check if this is right. thanks

Algebra 1A

could someone please help and check my answer thank you. simplify your answer, type an inequality symbol, then type an integer or a decimal solve 7 x + 2 <30 the solution is {x[< 30}, 0.30 is this correct?

algebra

Please help me! Sorry there are 4 questions I need to check my attempts with to see if I am on track. Thanks!! 1. 5-3[2(3x-4)+3] 2. Evaluate when x = -3 and y = 2 3x squared - 4y squared _______________________ 4x - 7y 3. -3/4y = -24 4. m + 1 5 2m - 1 ______ + ___ = ______ 4 6 12

Algebra, Check help please?

42 is 200 percent of what number? So I put 42 over 100 is equal to 200 over x? Is this right? Can someone explain? Thank you -Allyson

3rd math homework

number sense write a subtraction fact using 6 such as 6 - ? = ?. then write an addtion fact you could use to check it. please help! thanks

Chemistry(Please check)

What is molar solubility of Al(OH)3 at 25 degrees C given the solubility product Ksp = 5.0e-33? I set this up as Al^3+ + 3OH^- Ksp=[Al^3+][OH^-]^3 5.0e-33 = (x)(3x)^3 Before I go any further did I do this correctly?

math

if 7 sheets of paper are made per day, how many are made in 1 week: 49 4 weeks:196 52 weeks:364 2 years:728 please check

Physics -- check answers please

Light travelling in water is incident on air refracts at an angle of 27 degrees. What is the angle of incidence? my answer: 37 degrees

Physics Help Please!!!! Check!

if I weigh N on Earth and 5320 N on the surface of a planet, what is the acceleration due to gravity on that planet? mg=702N m=702/9.8=71.6 kg mg=5320N g=5320/71.6=74.3 m/s^2

Derivatives

Find the derivative of the following questions; ³√2t/(t^2-4) Every thing is under the ³√ and the / is a fraction bar. My answer is y'= t(2t)^3 Can you check my answer please

Grammar

Each sentence in a paragraph should relate to the idea that the topic sentence introduces. 1. True 2. False I answered true. Please check my answer and Thank you for your help.

Chemistry(please check my answer)

The transuranium elements A. are the elements with atomic numbers above 92. *** B. occur in nature. C. are sometimes radioactive. D. all of the above

English

The sentence below requires a citation. The United States of America has 50 states. True False I say True. Please check my answer.

Algebra

Ribbon is sold at 3 yards for $6.33. Jackie bought 24 yards of ribbon for a project. How much did she pay? I am pretty sure it is $50.64 PLEASE CHECK MY ANSWER

Science

One way to stabilize the world population is to reduce ______________________ by improving women's status and educational opportunities. Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts about this subject.

English-(PLEASE CHECK)

How have things changed for African Americans and women since the 1959 first performance of A Raisin in the Sun? My Answer- They are more respected and there is less discrimination against them. Should I add anything else?

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