Trig check my work please?

89,471 results, page 42

trig

sin, cos, and tan for −5x + y =​0, x is less than or equal to 0

Trig

what are the intercepts of the graph of f(x)=4cos^2 -3 on the interval [0, 2pi]?

Trig

Find the area of quadrilateral whose verties are A(0,2), B(2,7), C(6,10), and D (9,-2).

Trig

Find the area of a triangle whose vertices are A(0,2), B (2,7), C (0,10).

trig

secx = 4 in Q2 find sin2x,cos2x,tan2x

Trig

For which of the values of m do the graphs of functions y=x^2-mx+4 and y=x^2-19x+9 not intersect?

English

Could you please check these sentences, please? Thank you very much for your invaluable help. 1) This TV programme concerns young people with discipline problems. They are sent to different parts of the world and live with families with very strict parents. 2) The first ...

English

Please check this for me thanks so much for your time :) Write a letter To Mark Jones regardng your finanical hardships you are facing since you have been out of work due to a car accident. Make sure you give as many details as you can. June 17, 2008 Dear Mr. Jones I am ...

Intermediate Algebra

Solve using elimination method. If the system has no system or infinite number of solutions, state this. Please show all work. I need to show how I came about my answer. I need this as soon as possible please. I would appreciate any and all help!! 2x+2y=20 2x-2y=4

Chemistry

Ytterbium, atomic number, 70 is the first element in the periodic table to have the first four shells full. work out the number of electrons in the fourth shell/ level of ytterbium? Please show all working out with no abbreviations and please help

calculus

answer the questions about the following function f(x)= 10x^2/x^4+25 a. is the point (-sqrt 5,1) on the graph b. if x=3, what is f(x)? what point is on the graph of f? c. if f(x)=1, what is x? what points are on the graph? d. what is the domain of f? e. list the x-intersepts? ...

grammar

Could you check my sentences. Thank you very much 1. They used to work that she would forget them when she got famous. 2. She used to tell them that would never happen. 3. She would always call, and go to see them when she was in town. 4. They would thing about her every time ...

Trig/Math

f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift, and vertical shift of the function. Amplitude:1/3 Period:?????? Phase Shift:??????? Vertical Shift:+4 Please Help ?

Trig/Math

f(x)=1/3sin(2/3x-π/4)+4 Find the amplitude, period, phase shift, and vertical shift of the function. Amplitude:1/3 Period:?????? Phase Shift:??????? Vertical Shift:+4 Please Help ?

Algebra HELP PLEASE

A cylinder has a radius of 4x + 2 and a height of 5x — 4. Which polynomial in standard form best describes the total volume of the cylinder? A.80pix^3+144pix^2+84pix+16pi B.20pix^2+26pix+8pi **** C.80pix^3+144pix^2+84pix-16pi D.400pix^4+1040pix^3+996ix^3+416pix+64pi My ...

physics

A 1-kg block is lifted vertically 1m by a boy. The work done by the boy would be one jule or would no work be done. I'm confused, I thought lifting wasn't considered work. The work done is actually about 9.81 joules. Think of gravity pulling on the block as an invisible string...

Math

Can you please check my work since my professor wont. Thanks 50% of 45 solution=90 Predict the height of a woman who's humerus is 40 cm long using H(x)=2.75x+71.48 solution= 181.48cm Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at...

ELA PLEASE CHECK ANSWERS!

1. which of the following words best characterizes the relationship shared by mr. and mrs. winterbottom? a. affectionate b. distant c. indulging (i picked this one) d. nit-picking 2. What is the most likely reason that Mr. Birkway is not upset with Phoebe regarding her ...

math

Please show all of your work in the space below. Please present and organized and complete solution. A garden will be made up of a parallelogram, a rectangle and a triangle. The garden must have an area of 500m square. Draw two possible gardens. Determine the dimensions of ...

ENGLISH

ive done ten sentences, five are verb and five are adjective, please check. 1. Lily bought a pink cat mask for the halloween party. 2. Anna was covering her scar with makeup as she didn't want anyone to make fun of it. 3. Tory dressed up in disguise to scare his little sister ...

English, check my answers

please check if I have put the apostrophes in the right places or if I have forgot to put them in certain places in these sentences: 1. My dog's been so sick lately. 2. We've been having lots of fun in science classes. 3. Why's the dog eating from the cats' dish? 4. It's time ...

medical billing and coding

This 35-year-old female patient has carcinoma of the upper-outer left breast. She had a lumpectomy performed and a sentinel lymph node biopsy of the axillary lymph node. The pathology report for the lymph node states no pathological change. What codes are assigned in this case...

someone answer please

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)...

Algebra

Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^2+6x-5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x-5) , she got 28x^3+42x^2-35x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this ...

Math

Andrew factored the expression 28x^3-42x^2+35x as 7x(4x^2+6x-5). But when Melissa applied the distributive law and multiplied out 7x(4x^2+6x-5) , she got 28x^3+42x^2-35x ; thus, Andrew’s solution does not appear to check. Why is that? Please help Andrew to understand this ...

Physics: Work

1st question: I was solving a question and I was asked the work done by friction. It is natural that work done by friction (a retarding force)should be negative and in my answer it was. However, just to be sure, work can be negative? 2nd question: A block of m = 2.00kg is ...

Math Check

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)

Math

Marilyn got a birthday check from her grandmother. She spent half of it on a soccer ball, and then earned $20 mowing a neighbors lawn. She now has $38. How much was her birthday check? A. 38/2=c+20 B. C+38=20/2 C. 2c=38-20 D. C/2+20=38

Manuscript Speech

How do I write a Manuscript speech on an article? What should it look like? Any examples? Check this site for a lot of information about writing a manuscript speech. http://www.shkaminski.com/Classes/Handouts/ms_spch.htm Thank you for using the Jiskha Homework Help Forum again...

English; Help/Check.

Check, Please? Select the one that is a Not a sentence fragment. A. Asking the interviewer how often he would have to work on weekends. B. To apply for a job at the new store in the mall. C. Shaking his new boss's hand, Tony knew he would like working there. Answer: C Modifier...

PHYSICS

ADDITIONAL INO ADDED AT BOTTOM a spectator at a hockey game is sitting in a seat situated 10.4m above ground leve. if the spectator has a mass of 52.6 kg, calculate her gravitational potential energy relative to: a)ground level Eg=mgh =52.6X9.8X10.4 =5360.99J b)the ice surface...

Physics

You pull on a rope that is attached to a box. The rope makes an angle of 25 degrees with the ground. You are pulling the box at a constant velocity. The force you are pulling with is 78N. The box weighs 25N. You pull the box a displacement of +16m. What is the work done by you...

English

Can you please check these sentences? I'm really doubtful about them. Thank you. 1) Look at the timetable on the departure board to see if your flight is delayed or if it is on time. 2) Then go to the check-in desk of the company you are travelling with. 3) I advise you to get...

Algebra

An inspector of weights and measures uses a special set of weights to check the accuracy of scales. Various weights are placed on a scale to check the accuracy of any amount from 1 oz. to 15 oz. What is the fewest number of weights the inspector needs? What weights are needed ...

Art

I need to let you check a few things later. I hope you'll be there, Writeacher. 1) I need your help for a project work on Emily Dickinson and the theme of anorexia. Could you suggest one of her poems? 2) I also need your help to find a short description (four-five paragraphs ...

technical writing

how to wrtie a home work ? Please clarify. I don't know what you are asking for. Thanks. Bandar. It is difficult to answer you. Is there another student in your class you can ask?

math

Not sure how to complete my home work tonight my first question is 2+8=4+ ___ I don't no how to answer please help thankyou

Math

How do you factor "0 = x^4 - 6x^2 + 5"? Please show all steps. Here's my work, but I just went around in circles..... 0 = x^4 - 6x^2 + 5 -5 = x^4 - 6x^2 -5 = x^2 (x^2 - 6) -5 / x^2 = x^2 - 6 (-5 / x^2) + 6 = x^2 (-5 + 6x^2) / (x^2) = x^2 -5 + 6x^2 = x^2 * x^2 -5 + 6x^2 = x^4 0...

Chemistry

What volume of 0.5M HNO3 is required to neutralize 25 cm3 of a 0.2M NaOH solution? please show work and detail.

9th grade algebra

This is for my daughter. find the product of x^2 -4/5 X x + 2/x - 2 could you please show us the work so we can try to understand how it works?

math

divide $ 680.00 among three children with the ratio 2:4:6 please show me how to work out the answer

Algebra 2 URGENT

Solve the equation using the method that seems easiest. Please Show All Work! x^2+12=0

reactions

if you have 66.6g NH3 how many grams of F2 are required for a complete reaction? PLEASE SHOW ALL WORK AND/OR STEPS!!!!

Chemistry

What is the molarity of a potassium chloride solution that has a volumeof 400.0 mL and contains 85.0 g KCl? Please show work.

8th grade

which of the following is an irrational number? A. 1 B. 9/17 C. 0.4166666666 D. Both A&C with showing work please or putting it in to words.

7th grade

Simplify each of the following expressions using the distributive property. need help please show work 5(x+y) -3(5+t)

algebra

d=(1/2)at^2; solve for a. i got a=d/([1/5])t^2) but i don't see that in any of the possible responses: a. a= (2d)/t^2 b. a= 2dt^2 c. a= (dt^2)/2 d. a= d/2t^2 What did I do wrong? & can you please show detailed work?

Art

what is the meaning of "Tango C.1918-24" of Elie Nadelman? why did he make it? I need some information for that work. Please help me!!!

math

What are the measures of the angles of a right triangle with side lengths of 1, 2, and sqroot of 2? please show/explain work

physics

What is the mass of a lead sinker witha volume of 3cm3? please show work I calculated 11.3*3 = 33.9 Is this correct.. Thank you.

Math

Solve the following equation in the complex number system. Please show all of your work. x^4 – 13x^2 – 90 = 0

pre-algebra

Given the linear equation y=-5x-2. Find the y-coordinates of the points (-1), (-2), and (1). Please show all of your work.

Math - urgent

Evaluate the definite integral 8 S (3x^2 + 3)/(x^2) dx 5 Not sure which substitution to use. Please show your work & explain. Thanks

calculus

Find the derivative of the function. y=cos((1-e^x)/(1+e^x)) Please show all work and explain. I am very confused

chemistry

what mass of water is required for the formation of 175 grams of carbon monoxide? please show work

statistics

Find the (two) z-scores that bound the middle 40% of the standard normal distribution. please show the work.

algebra

Solve the inequality. Express your solution using notation and please show all of your work. x^4<16x^2

precal

For the given functions f ,g and h, find f o g o h and state the exact domain of f o g o h. Please show all of your work. F(x)=inx g(x)=/x/-7 h(x)=5x+6

measurments

which has the least value? 3130 L+38126 cl+ 3403 ml 394 kl+ 1425 Kl+ 490L please show work!

college algebra

analyze the graph of the following function. r(x)= x^2+x-6 -------- x^2-x-2 there are 8 steps but they don't make sense to me... please show work!! thanks

Intermediate Algebra

Solve using the elimination method. Show your work. 14x+18y=54 -4x-14y=42 HELP please

college alg

solve the following inequality x^2(8+x)(x-5)/ (x+5)(x-2)> or equal too 0 this looks like a fraction please show work

stats

. Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.4 0.25 0.35 Please show all of your work.

calculus--please help!!

Graph the function using transformations show your work and state. A. the domain b. the range c. the asymptotes f(x)=4-1/(x+6)^2

calculus

Solve the equation in the real number system X^4+11x^3+24x^2-23x+35=0 Please show work

math

if X is 10% of two other numbers,Y and Z,and Z is 3 times the value of Y.What percentage is X of Y alone ? please show me how you work it out,thanks

Calculus

Determine the equation ofthetangent line in slopeintercept form at x=1 of y^3 +2x^2=1 at x=1. Please show work so I can follow the process. Thanks!

Math

Let R1 and R2 be the remainders when polynomials x^3 + 2x^2 - 5ax - 7 and x^ 3 + ax^2 - 12 x + 6 are divided by ( x + 1 ) and ( x - 2 ) respectively. If 2R1 + R2 = 6, find a. Please work the complete solution.

Chemistry

Propose buffer components to hold a pH of 9.5, let the base have a concentration of 0.1 M show all work please

science

can you please give me a link to a detailed essay on gender differences in depression. I need a guideline to work from

6th grade math

Determine whether each value of x is a solution of the inequality 4x-5<3 a. x=0 b. x=2 c. x=-2 d. x=4 Help please *show the work and answer!!

Math

Write each expression using a single exponent. 20.) 8^10*8^9 22.) 2.6^12 * 2.6^12 Can you please show your work so I can get a better understanding of these problems?

Math

MULTIPLY. WRITE EACH PRODUCT IN SCIENTIFIC NOTATION. 24.) (3 * 10^6)(2 * 10^12) 26.) (6 * 10^9) (5 * 10^4) Can you please show your work so I can get a better understanding of these problems?

Basic Physics

I don't understand how to work this problem out: Find x-component of vector a ⃗ = (7.0m/s 2 , - y-direction) Please help

Algebra 2

Find all of the zeros of each function 1. q(x)=2x^3-17x^2+90x-41 2.x^3-5x^2-7x+51 3.x^4-9x^3+24x^2-6x-40 Please show work!!! I want to learn how to do it.

MATH

For the following system of equations, what is the x-value of the solution? -x + 2y = 6 6y = x + 18 A. -18 B. 0 C. -6 D. 3 Confused? Still trying to work it out. Please help! Thanks

Math

What is the rule for the function shown in the table? x: -1 | 0 | 1 | 2 y: -2 | 1 | 4 | 7 A. y= 1/3x + 1 B. y=3x + 1 C. y= 1/3x D. y= 1/3x + 1 Will someone please help and explain how I can work this out. I have trouble with these.

Math

Write an equation for the tangent to the curve y=sinmx at the origin. I got y=mx, is this correct? Please help by showing work! Thanks

Math

What is the surface area of a rectangular prism with l = 14 in., w = 12 in., and h = 4 in.? * Show your work and solution below. I don't know how to solve this please help ASAP!

Calculus (Urgent, please)

Find the area of the region enclosed by the intersection of the circle x^2+y^2=4 and the parabola y=x^2. Show work

math work

evaluate the expression ( 94 93) please help with this! I don't know what to do! ps there is a big bracket that is around the 94 and the 93, i just couldn't enter that into the box.

calc

determine the intersection pints of the graphs of the equations y=x^3-4x y=-x-2 I dont understand this please show all work.

Science

How dos the pull of a magnet work PLEASE ANSWER I NEED TO TURN THIS IN BEFORE JUNE 9th thank you!!

algebra 2

find the real or imaginary solutions of each equation by factoring. 3x^3+3x^2=27x *please show work so i can learn how to do this.

Pre-Calc P lease check

Please check my answers; 1.Which of the folowing is another representation of (-3,pi)? (3,120degree) (3,0 degree)I think it is this one?? ((-3,0 degree) 2.Which is not a representation of (5,150 degree) (-5,-30 degree)I think it is this one? (-5,330 degree) (5,510 degree) 3....

Physics

A bicycle starts at the origin of a circular track that has a circumference of 126 m and travels at a constant speed a distance s = 38.0 m in a time t = 12s. a)what is the angular displacement (in rad) of the bicycle from its starting position? r=20.1 so theta or angular ...

math-volume

I'm confused with how to solve this problem, so help would be great! The volume of any spherical balloon can be found by using the formula V= 4/3 pi r^3. Write an equation for r in terms of V and pi 4/3*pi*r3 = V Multiply by 3 3*(4/3)*pi*r3 = 3*V 4*pi*r3 = 3V r3 = 3V/(4*pi) r...

English

1. Hello. May I speak to Tom? Speaking. Who's this? Hi,Tom. This is Sam. How are you doing? Just fine. How about you? I'm so-so. How is your school? Oh, it's great. I like it very much. 2. Hello. May I speak to Tom? He is not in now. Can I take a messsage? OK. Ask him to call ...

math. PLEASE HELP.

Question: If A= 29 degrees and a= 4.6, find c. There is a diagram shown in the textbook. b is adjacent, c is the hypotenuse, and a is opposite. I know I'm suppose to use SOH CAH TOA, and i tried using tan, but Im not getting the correct answer. i looked in the back of the ...

Calculus

Find the intervals where the function f(x)=((2x-1)^2)(x-3)^2 is concave up and concave down and find all inflection points. Give decimal answers using two decimal place accuracy. Please help me!!! I really don't understand! and please show your work so that I understand :) ...

english

Im deciding my courses for fall semester please advice if basic math and anatomy&psysiology with religion is too much of workload, my other choice would be a&p,basic english and religion.What do you think. note.. I know whatever is chosen is hard work,i just want to be prepare...

7th grade math help Ms. Sue please

How do you find the sales tax of something? Here is one of my problems: The price of three dolls are $12.99. What is the price of the dolls with a 5% sales tax? Show all of your work! I cannot figure out how to put up an equation and solve this problem. Please help!

Calculus Help Please Urgent!!!

A cone-shaped paper drinking cup is to be made to hold 30 cm^3 of water. Find the height and radius of the cup that will use the smallest amount of paper. (Round your answers to two decimal places.) Height = ? Radius = ? Show work please!!!

Science

A student is trying to identify the different forms of energy described in the following chart: Form of Energy Description Examples Energy A energy that travels in waves through space light radio waves Energy B energy that depends on the height of an object a person at the top...

physics

An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the temperature of 0.230 mol ...

physics

An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the temperature of 0.230 mol ...

physics

An ideal gas is enclosed in a cylinder with a movable piston on top of it. The piston has a mass of 8,000 g and an area of 5.00 cm2 and is free to slide up and down, keeping the pressure of the gas constant. (a) How much work is done on the gas as the temperature of 0.230 mol ...

math

I need help with these questions please. Could someone please check them for me? Thank You. 1. Jane Hilman went to her bank. She had a balance of $1,009.88 in her savings account. She withdrew $130.00 and the teller credited her account with $6.19 What is her new balance. is ...

Math

Calculate the slant height for the given square pyramid. Round to the nearest tenth. Pyramid base= 6cm Height= 5cm 6.2 cm 5.8 cm 7.8 cm 7.2 cm I am usually very good at solving these kinds of problems but I cant focus on anything right now and I keep getting thrown off. I'm ...

MATH STUCK:-(

I am having some difficulties factoring polynomials and I use only one method to figure the stuff out, which is the guess and check method because it's just mental math work and not that complicating. Here is a question that I know how to do, and below it I will list down the ...

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