Trig check my work please?

89,452 results, page 82

Chemistry(Please check)

List the conjugate base for the following acids: 1) Acid = CH3CH2CH2NH3^+ Conjugate base = CH3CH2CH2NH2^- 2) Acid = CH3CH2CH2OH2^+ Conjugate base = CH3CH2CH2OH^- Are my answers correct? Thank you!

Chemistry: please check

At which electrode does oxidation occur in a voltaic cell? anode only cathode only *both anode and cathode either anode or cathode, depending on the metal Thank You.

science !!! help

please answer these 4 questions about since I know nothing about this. 1. A box of cleaning supplies weighs 15n.if the box is lifted a distance of 0.60m,how much work is done? A. 0.040 j B.9 j C.14 j D.25 j 2.to chop wood you apply 50.0n of force to an ax. The ax applies 600....

English

Can you please check these sentences please? Thank you. 1) Along the wall in front of the left window there is a book closet (correction: book shelf) 2)What distance do you walk to school every day? OR How far do you walk to school every day? 3) They have a 15-minute break. So...

biology

What processes in the transparency release carbon dioxide into the atmosphere? Please check your question. It makes no sense. Please read: http://en.wikipedia.org/wiki/Cellular_respiration what processes in the transparency release carbon dioxide into the atmosphere

ap bio

a population of 600 plants contains 294 AA, 252 Aa, and 54 aa individuals. the AA and Aa produce purple flowers while the aa plants produce white flowers. what are the frequencies of the following? please show work or explain how you got it. please A. Allele A B. Allele a C. ...

English

Can you please check these sentences for me? Thank you very much. 1) Robotiv planes and search robots can be used in rescue situations such as after natural disasters. 2)Tney can be built and launched in 15 minutes. They are equipped with cameras and microphones, too. 3) They ...

French check my answer

I posted this again because i really need help fast!! I am writing a postcard to my friend saying i went on a trip to the country guadeloupe, this is my letter in english and can you please check if i translated it properly into french, thanks :) Hello Louis. I am visiting the...

trig

Solve the given triginometric equation analytically. Use values of x for 0 less than or equal to x less than 2pi P.S Thanks Reiny for your last post, if you are still online.

trig

In a regular octagon, AB is a diagonal and CD joins the midpoints of two opposite sides. The side length of the octagon is 4 cm. To the nearest tenth of a cm. find a)AB and b)CD. I'm stumped.

trig/math

A stained glass window is composed of 20 triangular sections, each with sides 6, 8, and 7inches. Find the total are of the window( to the nearest square inch).

trig

In a right triangle the hypotenuse is 100meters,and alpha, the angle adjacent to the shorter leg. If cos alpha=1/2, find the measures of the two legs.

trig

A missile is fired at an angle of 85 from the horizontal. At one point, its speed was 1,000 mph. Find its horizontal velocity in miles per minute

trig

Let µ be an angle in standard position that contains the point with co- ordinates (-5;-12) on its terminal side. Determine the values of the six trigono- metric functions of angle µ.

trig

the terminal side of an angle theta in standard position coincides with the line y=5x and lies in quadrant 3. find the six trigonometric functions of theta.

Math/Trig

Write the sine function with an amplitude of 1/4, a period of 3pi, phase shift of pi4 to the right, and a vertical shift of 4 units down.

trig

The lengths of 2 adjacent sides of a parallelogram are 42 cm and 36cm. an angle of the parallelogram is 4o degrees. Find the measure of the longest diagonal to the nearest tenth of a centimeter.

TRIG HELP ASAP

I really need help on this problem. A sector has area of 15 in^2 and central angle of 0.2 radians. Find the radius of the circle and arc length of the sector

trig

A 100 kg box slides with constant velocity down a ramp inclined at 20 degrees, with the horizontal. Find the frictional force acting on the box.

trig

Give the component form of the resultant vector in the following. NOTE: Answer must be typed in using the following format -- including the parentheses: (#,#). u =(10, 5) -3u=

trig

my question is find all angles of theta and 2pi whose reference angle is alpha = pi/12. Give exact answers. i cannot for the live of me find this

Math (trigonometry)

How do you solve this trig identity problem without factoring? I just used @ to represent theta: sin^4@ + 2sin^2@cos^2@ + cos^4@ = 1

trig

Solve sin θ = -0.204 for 90º < θ < 270º. Give your answer to the nearest tenth of a degree. Honestly have no idea how to do this.

trig

Write the expression as the sine, cosine, or tangent of a double angle. Then find the exact value of the expression. 2tan 2pi/3 / 1-tan^2 2pu/3

trig

estimate the components of the vector. Round to one decimal place. [v] = 33.9, θ = 65.9° Find the horizontal and vertical components of v, and write in component form.

Pre-Calc/Trig...

Am i correct? It is possible for a system of linear equations to have no solutions. True <-- False i think it's true, if the lines are parallel?

Calculus/pre-trig

Write the formula for the discriminant. State the types of roots for a quadratic equation, explaining how the discriminant helps you determine the type.

Trigonometry

find the value for the indicated trig function for ø, if ø is an angle in standard position with the terminal side defined by the given point. (18,24); find cos ø

maths geometry

A straight road separates towns A (grid ref 42,45) and B (grid ref 52,40) A village is situated at grid ref (46,57) and a new road is planned from the village to road AB. What is the shortest road possible (1 dp) Please define an origin and a set of axes Use Cartesian geometry...

Business Reports and Presentation

What qualities of an oral presentation are most important to you as an audience member? Explain your answer Please note that we don't do students' homework for them. Once YOU have come up with attempted answers to YOUR questions, please re-post and let us know what you think. ...

English

Writeacher, I urgently need your help to check a few sentences on job. 1)When I go to the supermarket, first I get the trolley and then I go to the meat and fish section and finally to the check-out counter. I usually pay cash but sometimes by/with the credit card/I use the ...

Propagating error

Find the absolute and percent relative error for each calc. b) 81.5 (+/- 0.5) x 40.2 (+/- 0.2)/ 21.8 (+/- 0.2) my answer for absolute error was 150. +/- 200, which is outrageous. Can someone show how they would do it so I can compare and find my mistake? error/(81.5* 40.2/ 21....

trig

prove that (2cosx+1)(2cosx-1)= 1 +2cos2x

trig

Solve the following for x, where 0 < x < 2 pi. 2 cos^2 x + cos x = 1

trig

prove: cos*2x=csc*2x-2/csc*2x

trig

How do I solve for theta in tan theta = -1?

trig

sec^2x/tanx -(tanx) how to simplify

trig

if tan(2x+18)degrees = cot(4x-12)degrees

trig

prove that cos 52 + cos 68 + cos172 = 0

Algebra 2 Trig Honors

logof3(x-1)+ logof3(3x-1)=2

Trig

Verify:cos(360degrees-x)=cos x

trig

csc^2x secx/sec^2x+csc^2x

trig

prove as an identity 1/1+sin(x) + 1/1-sin(x)

trig

Find sec theta if theta=3/4 in Q1

trig

1-cos/1+cos= 2(cosec-cot)

trig

If (cosa-sina)/sina = 2 , then what is tga = ?

Trig - Thanks Damon

Thanks for the help Damon. Much appreciated. Don

Trig

(sin/cos)/ ( 1/cos - 1) = I'm stumped

trig

how to graph y = 1/2 cos 2x for 0 ≤ x ≤ 2 p

trig

Which expression is equivalent to cos(4x) + cos(2x)?

trig

inverse tan x = inverse cos 4/5

trig

on a triangle, A = 50 degrees, B = 81 degrees, and c = 12. what does a, b, and C equal?

trig

tan^2theta+6=sec^2theta+5

trig

what is 7pi/3 in degree .13pi/3 in degree

math-trig

tan(t)-sec^2(t)/tan(t)

trig

cos^(2) 20 degrees + sin^(2) 20 degrees +pi/2

trig

find the indicated vector. let u = (-9,1), v=(-5,9). Find 3u+v

trig

simplify (1-cot^2x sec^2x) / ( cot^2x)

trig

simplify (1-cot^2x sec^2x) / ( cot^2x)

trigonometry (Trig Equation)

4 cos 2x + 3 cos x = 1

Math

Help Please: Please Help 1.Essay:Show all work,Find the Product. (x^2-2)(x^3-4x+9) 2.Find the product:(2x-4y)(2x+4y) 4.Find the product:(8x-3y)^2 a.64x^2+9y^2 b.64x^2-9y^2 c.64x^2-48xy+9y^2 d.64x^2-48xy-9y^2 (b)

medical coding True or False

Please check my answer thanks The coding supervisor is interviewing candidates for a new out patient coding position the JOB DESCRIPTION will assist bthe coding supervisor in this process I said true

math 012

will someone please double check my answer to this problem. the answer i get is a fraction, but not sure how to type it on here. 4(4y+2)=2(1+6y)+8 16y+8=2+12y+8 16y+8=10+12y -16 -16 8=-6+12y +6 +6 14=12y divide both by 12 and that leaves y=14/12 then reduce down to 7/6 is this...

math

please check my answers 1.which is smallest 5/8,3/4,9/16,7/8 =9/16 2.subtract 6 3/10-4 11/15=1 17/30 3.estimate 6 1/8* 7 4/5=48 4.lcm of 20,32=160 jon spent 1/3 of his study time doing math and 2/7 preparing for history exam. what fraction of his study time remains? = 8/21 5....

Algebra

Could someone check this equation for me please.I have added the steps I have done so far. 7x +9 = 5x-5 subtract 5x from both sides and simplify 2x+9=5 subtract 9 from both sides 2x=-4 divide by 2 x=-2 Thought I had done it right but each side does not add up equally if x = -2.

geography

What lines of latitude determine the" tropics"? My answer is 23.5 degrees N and 23.5 degrees S latitude. Am I right? Please check me on one more! Why is Greenwich, England, so important to a geographer? My answer is -- Because the prime meridian runs through it. Am I right?

Physics

A car sits at a red light. Once the light turns in green, the driver accelerats at a rat of 3.5m/s^2. How far has the car moved after 6 seconds? I have so far d= (1/2)at^2 please check is it (1/2)(3.5m/s^2)(6 seconds) is the answer 1.75 m/s^2 x 6 sec=10.5 m/s^2? Thank you

Physical Science

Hello! Thanks for checking my question out! ____ 3. During a phase change, the temperature of a substance (1 point) a) increases. b) decreases. c) does not change. d) increases or decreases. My Answer: C Could someone please check my answer? Thanks! - Da Fash

Business Research and writing

How do I analyze this data below? Thank you for taking the time to complete this brief survey for my class project. The information gathered will be analyzed to determine how an individual’s educational background relates to his or her career choice. Your input will be ...

History

What was the purpose of the freedmens bureau A.to allow former slaves to vote B.to grant former slaves a piece of southern land C.to repeal the black codes D.to assist former slaves with getting jobs, education, food, and cloths*** Can someone please check my answer

math ( subtracting fractions)

12 1/4- 4 1/8 When you add or subtract fractions, you have to have the same denominator. In this problem you have to change 1/4 to 2/8. Then subtract the fraction and then subtract the whole number. Please post your answer and we'll be glad to check it.

i need help accounting

Tracy Migre, a certified public accounting, has completed the following transactions. Ms.Migres assests , liabilites, and owner equity account titles and balances are shown in the table below. use the table on the page to show the effect of each transaction. Transactions: 1)...

Chemistry(Please check)

A reaction has a rate law, rate = k times A times B squared. What is the overall order of the reaction. I think that the order is 0. Is this correct?

Calculus

Which of the following functions is continuous at x = 5? I put a for my answer, could someone please check this? a. f(x)=(x^2-25)/(x+5) b. (x^2-25)/(x-5), x cannot equal 5 20 when x equals 5 c.(x^2-25)/(x-5), x cannot equal 5 0 when x equals 5 d. all of the functions are ...

Math

Please check my answers! Proportion worksheet! 1. 17/2 = x/5 17/2 = 42.5/5 2. 22/30 = 100/x 22/30 = 100/136.36 3. 2/1 = 12/x 2/1 = 12/2 4. 400/1 = 1000/x 400/1 = 1000/2.5 5. 125/2.5 = x/6 125/2.5 = 300/6

English

1. I am in the RCY club. We do clean-up activities and help people in need. 2. I am in the gag club. We make scripts and do plays. 3. I am in the science invention club. We make things with plastic and metals and have a display show. 4. I am in the pop music club. We listen to...

Physics

12 kg wagon is being pulled at an angle of 38o above horizontal. What force is applied to the wagon if it accelerates from rest to a speed of 2.2 m/s over a distance of 3.4 m? Is this question a typo? Am I supposed to solve for force or work? Physics - silverback, Tuesday, ...

please check my answer

Consider the following equations. N2H4(l) + O2(g) N2(g) + 2 H2O(l) ÄH = -622.2 kJ H2(g) + 1/2 O2(g) H2O(l) ÄH = -258.5 kJ H2(g) + O2(g) H2O2(l) ÄH = -187.8 kJ Use this information to calculate the enthalpy change for the reaction shown below. N2H4(l) + 2 H2O2(l) N2(g) + 4 ...

English

1. The cooker is used to cook rice. 2. The machine is used to make books. 3. The knife is used to cut vegetables. 4. The table is used for the kids to study. 5. The room is used for him to study. 6. The car is used for his wife to go shopping. -------------------------- Are ...

Math

Write each percent as a fraction and as a decimal. 7. 72% full 72/100 or .72 9. 500% increase Would it be 500/100 or 500/1000? .500 11. 37% profit 37/100 and .37 Please be so kind as to double check my answers and explain to me if I got anything wrong so I can get a better ...

Anatomy and Physiology

Hey! Thanks for checking my question out! ____ 7. Women typically reach the peak of fertility in their (1 point) a) late teens. b) late twenties. c) early thirties. d) late thirties. My Answer: B Could someone please check my answer? Thanks! - Da Fash

Math Please Help me!!!

3x^2+17x+10 *You have to factor completley but I don't know how too.Please help.! (3x+2 )(x + 5) Factoring asks this question: what two factors of 10 add to 17 when one is multiplied by three? Here is how you factor. Place two sets of parentheses. ( ) ( ) To get 3X^2, we may ...

science

On top of one of the peaks in Rocky Mountain National Park the pressure of the atmosphere is 500.torr. Determine the boiling point of water at this location. The heat of vaporization of water is 40.7 kJ/mol? Show work for me please! Thank you

Algebra

I am great at math but for some reason can not wrap my brain around Algebra for the world! Please Help!! Im stumped! Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x – 5y = 61 7x – 5y = -9

Chemistry

Zinc sulfide and oxygen gas react to form oxide and sulfur dioxide. Determine the amount of ZnO that should be produced in a reaction between 46.5 g of ZnS and 13.3 g of oxygen. What is the mass of the xs reactant? Please show work

Algebra

please help me solve my homework with all the work involved. i have trouble paying attention in class so it's hard for me to do my homework. here are a few of the questions. I need to find out what the letters equal. 1.) 10(-4+y)=2y 2.)9(b-4)-7b=5(3b-2) 3.)-(8n-2)=3+10(1-3n) 4...

CHEMISTRY

In each reaction, calculate the moles of product (in parentheses) when 3.00 moles of each reactant is used. A: 4Li+O2 = 2Li2O (Li2O) B: Fe2O3+3H2 = 2Fe+3H2O (Fe) C: Al2S3+6H2O = 2Al(OH)3+3H2S (H2S) Please show work, Thanks

Physics

Find g at a point on earth where T = 2.249 s for a simple pendulum of length 1.250 m, undergoing small-amplitude oscillations. (Enter your answer to four significant figures.) CAN YOU PLEASE PROVIDE AN ANSWER WITH WORK . THANK YOU VERY MUCH!!!!!

Math

In ΔABC, A=75 degrees and b=6. Giving your answer in interval notation, find the range of values of a such that: only one triangle is possible. two different triangles are possible. Please explain or show work!

MATH

1))ten to the seventh power= 8^7 base 8 exponent 7. key Sequence: 8^7=2,097,152 2))ten to the six power= 10^6 base is 10 exponent 6 key sequence: 10^6=1,000,000 3))nine to the fourth power 9^4 base is 9 exponent is 4 key sequence:9^4=6,561 thanks i need someone to check my ...

please everyone post opinions. everyone is welcome

is it wise to plan your life for next twenty years now? i'm asking opinions from people for my project so i will appreciate if you please participate. To start off, this is my answer: i think it is wise because have broad plans in goals in life will give an idea to people on ...

Maths

Please, I still need help with this. I need to make tables of values for both horizontal and vertical stretching, but I wasn't in class and missed the lesson. I don't really understand how to get the values; at first I figured you'd get the value of y by just pluging in ...

government

a labor union is an organization of workers who a. hold exactly the same political beliefs b. represent the interests of the business community c. work in the same job or industry d. work on farms. i think its b

Physics

To compress spring 1 by 0.23 m takes 188 J of work. Stretching spring 2 by 0.27 m requires 211 J of work. Find the force constants. K1 = K2 = I have derived the formula for k as k = W/(2x^2) but when i plug in the values the answer isn't correct.

Calculus

Is x^2 - 2x 1 to 1? I keep getting yes every way I try to work it. Book says no. In the end, I get (with x1=1 and x2=-1 <- I use these numbers because of the x^2) f(x1) = -1 and f(x2)=3. I can't seem to find if x1 = x2 (btw, I know that by the graph it is not, but I am ...

Ethics and social responsibility

You work hard in your office overtime weekends and early mornings.you get paid well but despise that your coworkers are getting paid the same pay for less work then what you are doing and get promoted ahead of you.

math

write an expression using n as the variable for this problem. each day julia rides her bike to and from work. she lives 9 blocks from work and burns 13 cal. per block. how many cal. does she burn in n days

Thematic units-question--Please Help!!

I asked this question yesterday and didn't really get much help with it. Can someone please help? An appropriate way to make connections to thematic units involves: 1. cross-cultural activities 2. developing interpersonal activities 3. the use of an appropriate software ...

physics

A 6.30kg block is pushed 9.50m up a smooth 35.0∘ inclined plane by a horizontal force of 77.0N . If the initial speed of the block is 3.15m/s up the plane. What is the initial kinetic energy of the block, the work done by the 77.0N force, the work done by gravity, the ...

CHEMISTRY

Observations Mass of Fe metal:100 MG Volume of water in Calorimeter: 100 ML Mass of water in Calorimeter (use 1g per ml): 100G Initial Temperature of metal: 20 Initial Temperature of water: 20 Final Temperature (both metal and water): 100 Determine the heat gained by the water...

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