Trig check my work please?

89,471 results, page 83

Physical Science

When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the efficiency of the pump?

college

Rs 150 will be given to cultivate one hectare of land.A and B can do this work 12 hours.B and C can do it in 15 hours and C and A ca do it in 10 hours.How much each will get if all the three work together?

math 156

june wants to work for 15 1/2 hours at her part-time job this week. she has already worked 8 3/4 hours. how many more hours does she need to work?

Algebra 2

Q: What is the value of b in the equation 4^2b-3 = 8^1-b? My Work/Answer: Set each sides base to 2 2^2(2b-3) = 2^3(1-b) cancelled bases out solved for b my answer - 9/7 Is my work and answer correct Thank You

French #2

Can someone please check my work? The following people are not engaged in certain activities because they do not have certain things. complete the sentences with son, sa , ses, leur, or leurs and an appropriate object from the list of words provided. Be logical. radio, voiture...

at leasttell me u cant 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)...

Language Art (Please Check...again)

1)Resilient people usually a)complain when they have bad luck b) bring good luck to others c)are able to deal with others** 2)when the someone refers to pausing to " enjoy the view of the trees and the flowers below," he really is talking about a) looking down at the view from...

Please check (history-5 Questions)

Please check these and thanks :D 1.A 2.D 3.A 4.(help because i couldn't get it) 5.B ------------------------------------------------------------------ 1.What signifies the period known as history? A. There are written records. B. It is a much longer period than prehistory. C....

Physics

A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the magnitude of the force exerted by the man. (b) Calculate the work ...

Physics

A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.(a) Calculate the magnitude of the force exerted by the man.(b) Calculate the work ...

English

Can you please check these sentences? Thank you. 1) Fishing was an important source of income in the Maldives. Now it has been replaced by tourism. 2) In Dublin you can go shopping in the busy and noisy streets around Grafton Street. 3) In 1845 Ireland was struck (hit) by a ...

cultural diversity

1. Asian emphasis on the value of filial piety may be noted in: A. A family's reluctance to disagree with an early childhood professional. B. Encouragement of interaction between adults and children. C. Strict adherence to Buddhist teachings. D. A mother's extreme effort to ...

Language Art (Please Check)

8.C 8.Which of the following details supports the main idea that Pa worked hard to try to feed his family? A.Pa and I walked, because I was a big boy of eleven. B.Were prid near out of grub my father told her. C.He traveled twice as far each day as the wagon. D.He glanced at ...

Physics

(a) Determine the amount of work (in joules) that must be done on a 104 kg payload to elevate it to a height of 993 km above the Earth's surface. ______ MJ (b) Determine the amount of additional work that is required to put the payload into circular orbit at this elevation. ...

algebra

^ = exponent **show work please A sheet of 67-pound paper has a thickness of 100^-1 inch. a. write and evaluate an expression for the total thickness of 5 sheets of 67-pound paper b. write and evaluate an expression for the total thickness of 2^3 sheets of 67-pound paper. I've...

English

PLEASE HELP!!! I'm really confused about these question from Romeo and Juliet... I marked the answers that I "think" are right but I'm not sure. Please tell me which ones i got wrong and the correct answer!?!?! 1. Why doesn’t Juliet want to marry Paris? She is already ...

Chemistry

How much water needs to be added to 150mL of an 0.75 molar solution of lithium phosphate to make the solution 0.625 molar? I came up with 70.31mL Can you someone just check this for me please? you want to dilute it 75/62.5, so you are diluting it a factor of 1.2, so add .2 ...

Science

Accordind to the theory of demographic transition,why do birth rates fall during the third stage? Please check your assigned reading and post your answer. We'll be glad to help you when we see your thoughts about this subject. Premature births and abortions Premature births ...

Chemistry

Can someone please check the following answers for me...THANK YOU! 1)Raising the temperature of a reacting system increases the rate of reaction but does NOT increase the: NUMBER OF COLLSIONS 2)Activation energy is: AN ENERGY BARRIER BETWEEN REACTANTS AND PRODUCTS 3)A catalyst...

Physics

A pendulum of a given mass is pulled back through a given vertical height and released to swing back down to a 'wall' where it impacts. Can i use mg delta h to get E kin; and then use E= half mv^2 to get the collision impact velocity? Would someone check my thinking please? ...

Agility training

please check my answer thanks :) Which one of the following acts is considered a fault on a broad jump? A. Moving one of the planks B. Touching the front edge of the first board C. Entering between the marker poles D. Knocking over a corner marker My answer is A

Honors Chemistry

Can someone check my first answer and help me with the second question? Thanks so much!! :D 1. N2 + 3H2 ==> 2NH3 : How many grams of NH3 can be produced from the reaction of 28 g of N2 and 25 g of H2? ==> I got 37.5 grams. 2. How much of the excess reagent in Problem 1 ...

Chemistry(Please check)

. Ksp for Fe(IO3)3 is 10-14. Two solutions, one being iron(III) nitrate and the other being sodium iodate, were mixed. At the instant of mixing, [Fe3+] = 10-4M and [IO3-] = 10-5M. What happens? My answer is that a precipitate forms because Qsp > Ksp. Would you agree?

Physics -- check answer please

Refraction is: a) the way light behaves when it goes through a narrow opening b)the way teo light sources interact to produce interference patterns c) the absorption of one component of the electric field d) none of the above are correct my answer: d

Chemistry

You are a work study student in our chemistry department. Amy, your supervisor has just asked you to prepare 250ml of 2.00M H2SO4 solution for tomorrow's undergraduate experiment. The Stock Solutions cabinet is under the Stockroom Explorer. You will find find a 2.50 liter ...

Physics

The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 72.4-kg person straight up by means of a cable. The person has an upward acceleration ...

physics

The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 85.8-kg person straight up by means of a cable. The person has an upward acceleration ...

Physic

The concepts in this problem are similar to those in Multiple-Concept Example 4, except that the force doing the work in this problem is the tension in the cable. A rescue helicopter lifts a 75.4-kg person straight up by means of a cable. The person has an upward acceleration ...

pre calc

The terminal side of an angle in standard position goes through the poin (-2,5). Find the values of the 6 trig function sin cos tan csc sec cot

trig/math

Two ships leave a harbor together traveling on courses that have an angle of 124° between them. If they each travel 511 miles, how far apart are they (to the nearest mile)?

Algebra 2/Trig

We just started logarithms and exponential functions, and I'm kind of getting the gist but not really. Here is what I tried on one of the homework problems: 2^X=4^X+1 1)2^X=(2^2)^X+1 2)x=x+1 3)0=1 or no solutions I wasn't sure what to do between steps 1 and 2. Thanks!!

Math

What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?

trig

An airplane pilot wishes to maintain a true course in the direction 250° with a ground speed of 400 mi/hr when the wind is blowing directly north at 60 mi/hr. Approximate the required airspeed and compass heading

Trig

Use the equation mg sin A = umg cos A to determine the angle at which a waxed wood block on an inclined plane of wet snow begins to slide. Assume the coefficient of friction, u, is 0.17.

trig

Find the values of sin 0, cos 0, and tan 0ƒáif the angle 0ƒáis in standard position and its terminal side passes through the point (¡V15, 8). Give answers as fractions.

Trig

mercury rotates around the sun in approx. 89 earth days (or 7,689,600 s. use a calculator to approximate its angular speed. choices: 4.09x10^-7 0.035 0.071 8.17x10^-7

English

Could you please check the following sentences, please? Thank you. 1)I'm still waiting to receive an answer from the principal of the German school to see if they are willing to accept your school in our Comenius partership. 2) In any case, our science teachers are really ...

CHEM

how do I work this question out?: 50.00g of NaCl are dissolved in water to give a solution that contains 2.500% NaCl by mass. The density of the solution is 1.030g/mL. The volume of the solution is: a)941.8mL; b)1.942L; c)2.500L; and, d)50.0mL. I know the answer is "b"->1....

Math (Check Answers Please)

(Please tell me if I did a good job!) Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. (My answer:) 3x + 5 = 3x + 5 This equation is equal to its ...

math

A and B together can make a wall in 60 days. A has worked for 12 days, B finishes the remaining work in 36days. How many days will B take to finish the whole work alone?

Please Help!!!!!!

Solve the Trigonometric equation for all solutions between [0,360)degrees. Sinx + 1 = 2.6635 Please, Please, Please Help Me!!!!!!!!!!

HELPPP~Reading! ! !

Can you PLEASE PLEASE PLEASE PRITTY PLEASE WITH A CHERRY ON TOP help me find a link that will give me the meanings of idioms?

English

I was wondering does anybody have answers to the The Renaissance: 1485–1660: Unit Test please I'm failing please please please help me thank you :)

English-(PLEASE CHECK)

Why does Curley's wife pose a threat to Lennie and George? My Answer- She flirts w/ other men + Lennie is interested; Curley might find out; Curley will find any reason to fight w/ Lennie.

Science 8th grade

Please check my answer thanks What makes up most of the volume of blod plasma ? A Reb blood cells B Water C Plasma proteins D White blood cells I think it's Red blood cells

Physics(Please check)

After 14.6 s, a spinning roulette wheel has slowed down to an angular velocity of 1.22 rad/s. During this time, the wheel has an angular acceleration of -4.51 rad/s2. Determine the angular displacement of the wheel. I did w0= wf + (4.51)(14.6) = 1.22+45.1 46.32(14.6) - (1/2)(4...

Math

Mr. R has some money to buy oranges, if he will buy 15 oranges he will need $90 more, if he will buy 10 oranges he will have $60 left. how much money has mr. R? Please kindly solve this using George Polya method.. guess and check...

Math

Part 1: Write two conditional statements for which the converse is true. 1. Statement: 2. Converse: 3. Statement: 4. Converse: Part 2: Write two conditional statements for which the converse is false. 5. Statement: 6. Converse: 7. Statement: 8. Converse: Listen my grandmother...

English Grammar

1. They work on Saturday mornings. 2. They work in the mornings. Is the use of plural nouns, mornings, in the sentences above grammatical?

MATHS

A travel agent arranged a payment plan for a client. It required a down payment of $150.00 and 12 monthly payments of $642.00. What was the total cost of the plan? 2. translate into math expression and solve. Some number divided by negative four is four. 3.The sume of three ...

social studies HELP

Check my answers please 1. Politics most informs a persons actions in a. Civic life *** b. work life c. private life d. school life 2. Which of the following best describes the purpose of the US Constitution? a. it restricts the rights of citizens b. it outlines how the ...

college phsyics

You push your physics book 1.50 m along a horizontal tabletop with a horizontal force of 2.40N. The opposing force of friction is 0.60N. a) how much work does your 2.40N force do on the book? b) what is the work done on the book by the friction force? c) what is the total work...

Science - Please Check This Answer

My problem is: When Christy takes her pet dog for a walk, the dog walks at a very consistent pace of 0.45 m/s. There are 20.1 m between the front of Christy’s house to the nearest dog park. How far will Christy’s dog have walked toward the park after 25 s? My answer is: ...

PHYSICS PLEASE HELP

A very large firecracker explodes in the hallway into 3 fragments. Physics students rush to the scene to enrich their knowledge of the law of conservation of momentum. They report that Fragment 1: mass=1.23kg, v=8.70m/s, north Fragment 2: mass =2.60kg,v=6.10m/s,east fragment 3...

MATH please help CHECK ANSWER

The cones are similar: Small Cone: Radius: 5 Length: 15 Large Cone: Radius: ? Length: 18 What is the radius of the larger Cone? Would it be 8?

English

1. I am too tired to focus on the teaching. I am too tired to do the laundry. I am too tired to mop the floor. I am too tired to iron my uniform. I am too tired to clean the living room. I am too tired to arrange the things in the living room. 2. I am too young to use the ...

Chemistry

What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.

algebra

please bear with me. i'am 58 years old and decided i wanna get my high school on line. my question is. convert the base 10 numeral in the base indicate 504 to base 10, and can i work this problem. so that i can come up with the correct answer.

Physics

I am reviewing for a test and I don't know how to attempt this question. Could someone please work through this problem and then have the general steps that I need to take to solve the question? Here is the question: A rocket expels gases at a rate of 1.30 x 10^3 kg/s with...

Math

please check my answer thanks :) Juan bought a home with an adjustable-rate mortgage. The margin on the loan is 2.7% and the rate cap is 7.2% over the life of the loan. If the current index rate is 4.3%, what isthe initial rate of the ARM ? A. 7% B 9.9% C 14.32% My answer is I...

Agility Training

Please check my answer thanks :) If you want to start training a four-month-old puppy for agility competition, which one of the following obstacles would be best to start with? A. Seesaw B. Dog walk C. Tunnel D. A-frame My answer is C

check please

hi ms. sue i was wondering if you had email that i can have to email you if i need help because i need help with accounting with some type of graph but it wont fit here is there anyway you could help me through your email or i can send it to your email and you help me out ...

Pre-Calc-Please check

I have three questions: 1. What is the remainder of (x^3 + 2x^2 - 5x+4) /(x-3) I think the answer is 34?? 2. Evaluate (4+5i)(2+2i) =4(2) +4(2i) + 5i(2) + 5i(2i) = 8 + 8i + 10i+10i^2(-1) =-2 + 18i 3. Using Rational Roots Theorem, list all possible rational root of f(x) = 2x^3...

PHYSICS - please check my work

pete and john play a game of tug war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2. Sarah decideds to join the game as well. Now pete pulls on Sarah with a force of 45....

math

How would I come about to the solution and what the answers to the question so I can help my son with his school work? 1.Check all the answers that are square roots of 36 a. 36^1/2 b.-(36)^1/2 c.9 d.6 e.-6 f. √36 2.)Which answers are equal to the expression 2 x √9 ...

chemistry,

,I NEED TO DRAW A LEWIS STRUCTURE for C2n2,cyanogen,and to state the noble gas,i know the answer is neon,but i have far to many electrons and am getting the gas argon,please help :N:::C:C:::N: please where do u think i am going wrong I don't know. You didn't show any work. C ...

Physics

You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 770 N and that of your belongings is 1040 N. Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 m) at a constant velocity. I solved...

dog behavior

please check my answer thanks What benefit does an adult dog gain from being petted with long smooth strokes ? 1. The dog grows to be larger 2. The dog learns to be more dominant 3. The petting makes the dog physically stronger 4 The petting reduces stress I pick #4

Science

Can someone please check my answers and if they are wrong can you help me fix them? Thank so much!! 1. Which of the following determines the strength of the force of gravity between two objects? Check all that apply. (2 points) the speeds of the objects the masses of the ...

Algebra 1

Can someone please check my answers? Thank You 1) Find an equivalent expression without parenthesis -(y+87) Answer: -y-87 3) Solve -3x-13x=96 answer: x= -6 4) Find the decimal notation 14/25 Answer: .56 5) Divide if possible 7/0 Answer:0 6) Solve 7x+10=52 Answer: x=6

SS

Can you check my answers? MY NEW ANSWERS ARE............ 1-C 2-A 3-D 4-D 5-A 6-C Correct now?!! 1;what was the effect of WWI on SC? A;state economy shrunk*** B;citizens used more resources C;factoryy production slowed D;women worked mens jobs 2;How did the end of WWI affect ...

Social Studies (Check, Please!)

What methods did Hitler use to try to exterminate Europe's Jewish population? A: Hitler used multiple methods to try to exterminate Europe's Jewish population. One method consisted of rounding up Jews, Gypsies, and Slavs from conquered areas, shooting them, and piling them ...

English (please check someone)

Please check this. Thanks! 1. Which of the following should be put in italics to correct the following sentence? Other famous vehicles that suffered a tragic end include the zeppelin Hindenburg and the ocean liner Lusitania. (1 point) Hindenburg and Lusitania*** zeppelin ...

algebra

solving the equation (x+4)(x-4)=9 Eric stated that the solution would be x+4=9>x=5 or (x-4)=9=>x=13 However one of these solution fails to work when subsituted back to the original equation. Why?olve and explain the reasoning. Can someone please help me?

physics

Calculate the work done in Joules when an athlete of body weight 96 kg bench steps on a bench of height 25 cm for 48 steps. Please present this answer rounded to a whole number without decimal places.

Please help me!!! BIOLOGY

1. Explain how natural selection and sexual selection can work together to cause the evolution of large antlers on male moose. 2. Suggest two ways a synthetic biologist can change the course of evolution.

Calculus

I have two similar problems that I need help completing. Please show all your work. Question: Find the limit L. Then use the å-ä definition to prove the limit is L. 1. lim (2x+5) x->3 2. lim 3 x->6 Thank you for your anticipated help!!

math, medical

A medication is available in 30mg. tablets. A patient is given a prescription for gr. ii. How many tablets should the patient take? I am not sure how to work this problem out, and i am confused on the gr. ii. part, i do not know what it means, please help. thank you

Physics Can you please get me started

In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. Determine the heat transferred between her body and surroundings during this event. ________ J

math

I need help figuring out the formula for this problem. What might the lengths of a horse enclosure border be if the enclosure is 52 square feet? I have to show my work. Please can someone help me figure it out?

Math

At a concession stand, popcorn costs $1.10 and nachos cost $2.35. One day, the receipts for a total of 172 popcorn and nachos were $294.20. How many popcorns were sold. Please show work! I don't understand

Math- Partial Fractions

Decompose the following into partial fractions after factoring the denominator as much as possible. Please show some work so I can understand how you did it. 1)x^2/((x-1)(x^2+5x+4)) 2)(3x^3-5x^2+12x+4)/(x^4-16) 3)1/(x^2 (x+1)^2 ) 4)(x+1)/((x^2+1) 〖(x-1)〗^2

math

Ms. Tweed earns $12 an hour. Deductions for taxes and insurance take 25 percent of her earnings. Which equation could be solved to find Ms. Tweed’s take-home pay, p, after 80 hours of work? please help!

Algebra 2

Can someone help me solve this inequality please? So I'm supposed to write the answer in interval notation and then graph it. The problem is the answer I get is negative and I thought that absolutes cannot be negative? Am I wrong? Here is my work so far: |2x-1|+6<2 |2x-1|+6...

Math

An area is bounded by the x-axis and the parabola y = 16 - x^2. Use four rectangles of equal width and the midpoint approximation method to estimate the bounded area. Could you please show me how to work out this problem? Thanks!

English

This was a question asked in our last test Either of her eyes --------- not work well. (Do, does, is) I answered 'do' but some of my friends say 'does' is the correct answer. Now I am really confused. Please someone help. What's the correct answer???

GK..please check...Chemistry Help Please

Sorry not leting me post entire thing on last post..can you please check Thank- YOu # Chemistry Help Please - GK, Wednesday, October 22, 2008 at 11:24am Reaction #1 (properly balanced): 2ClO-(aq) + 4H+(aq) + 6I-(aq) –> 3I2 + 2Cl-(aq) + 2H2O Reaction #2 (properly balanced...

Algebra

I'm not quite sure about these problems. I know how to do them, but it seems that I get the wrong answer. Maybe I'm supposed to get 'no solution' but I'm not sure. Could someone please help me with them? 5|6-5x|=15x-35 2|3x-7|=10x-8 1/4|4x+7|=8x+16 Ok for 5|6-5x|=15x-35 first ...

English

Could you please check these last sentence? 1) I believe people shouldn't be discriminated against just because of the colour of their skin. 2) In my opinion, we should all be treated as equal and should be given the same opportunities in life. 3) We should stand (?? I can't ...

english

hey people!! im new here and i just got an essay to do on english altough its the first day of school!! please guys i really need your help.. its a essay on the following topics: 1-summer 2-love is not all it's made out to be 3-a glorious sunset 4-stories like ours have happy ...

Math 3

Find the inverse of the function f(x) = 5 – e^(x-1). Determine the domain, range, and asymptotes of the function and its inverse function. Please show all of your work.

Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1 divided by x^2+7x+12 divided by 2x-1 divided by x^2 +x- 12 is the expression Help me please and thank you.

math

Simplify each radical expression. Leave in radical form. Show your work. 6.sqrt 75 + sqrt 3 7. sqrt7(sqrt 14 + sqrt3 ) please.

CHEMISTRY HELP PLEASE

when I use henderson-hasselbach Ka of HOP4^2- = 4.8 x10^-13 pKa= -lg(4.8 x10^-13)=12.3 substituting I get 7.44-12.3 = lg [base/acid] e^-4.86=[base/acid}= 7.75 x10^-3 according to my textbook this answer is incorrect and should be 0.59 Please Help! IF you are trying to work the...

Algebra 2

How much pure acid must be added to 6 milliliters of a 5% acid solution to produce a 40% acid solution? Please Show All Work!

Math

Robert is writting a poem. The poem is divided into 5 stanzas and is on 2 pages. There are 60 lines in the poem. How many lines are in each stanza? shoe work please

Remainder Theorem

Use the remainder theorem to: find the remainder when f(x) is divided by x – c, and determine whether x – c is a factor of f(x). f(x) = x^4 - 8x^3 + 9x^2 - 69x + 24 ; x - 8 Please show all of your work.

Social Studies

1. What effect does having a written constitution have on limiting the powers of officials? (1 point) It establishes the rule of law that everyone, including officials, must follow. It grants the president supreme authority over other officials. It grants state representatives...

dog behavior

Please check my answer thanks Which of the following conditions is an example of an intervening variable ? A painful stimulation applied just after the independent variable B. A loud noise causing a startle reponse C. Deperiving a subject of water 12 hours before training D. ...

law

Revise and edit the following run-on sentence: Data in computerized form is discoverable, even if paper "hard copies" of the information have been produced, the producing party can be required to design a computer program to extract the data from its computerized business ...

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