Wednesday

July 30, 2014

July 30, 2014

Total # Posts: 3,156

**Statistics**

A company has two factories in which they manufacture engines. Once a month they randomly select 10 engines from each factory and test if there is a difference in performance in engines made in the two factories. This month the average output of the motors from Factory 1 is 12...

**Statistics**

A 95% confidence interval for a population mean, ?, is given as (18.985, 21.015). This confidence interval is based on a simple random sample of 36 observations. Calculate the sample mean, x ?, and the sample standard deviation, s. Assume that all assumptions and conditions ne...

**Art**

I left out the following sentences. Thank you, Writeacher. 1) I miss seeing my favourite TV shows. He neglected painting the back side of the house. 2) He neglected to paint the back side of the house (do they have the same meaning?)

**Foreign languages**

Thank you very much for your help. I just wanted you to check these sentences. 1) He begged to leave. He appears to be a nice man. He asked to leave the room. 2) He avoided failing the course. They consider selling their old furniture. 3) He chose not to attend the course. The...

**Foreign languages**

Thank you very much, Writeacher. I need to rephrase sentence 1. I also wonder if you could help me find online tests on verbs followed by the gerund/infinitive and on reporting verbs (possibly different from say, tell, ask). Thank you very much! 1) Briefly outline the main val...

**Art**

Writeacher, could you please check these questions? Thank you. I need to express question number 3 in a different way. 1)Briefly analyze the works of at least two authors (also: of those authors?) (we dealt with in class) who showed a deep social commitment as well as (an) awa...

**Geometry**

I have a parallelogram with sides AB and CD each 36' long and sides AC and BD each 22' long. Corner A to corner D is 43'2" long and corner B to corner C is 41'1" long. How far will corner C have to travel for this parallelogram to become a rectangle?

**Physics **

A 1400-kg car rounds a curve of 57-m banked at an angle of 14 degrees. If the car is traveling at 98-km/h (27-m/s), will a friction force be required? If so in what direction? How much friction force will be required?

**Physics**

What is the maximum speed with which a 1150-kg car can round a turn of radius 71-m on a flat road if the coefficient of static friction between tires and road is 0.80?

**Physics**

A 0.40-kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 2.0-m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 75-N, what is the maximum speed the ball can have?

**Physics**

A 0.140 kg baseball traveling 39.0 m/s strikes the catchers mitt, which, in bringing the ball to rest, recoils backward 13 cm. What is the average force applied by the ball on the glove?

**Physics**

What is the magnitude of the average force required to stop an 1500 kg car in 8.0 s if the care is traveling at 95 km/h? Sum of F = ma?

**Physics**

A 13.0 kg box is released on a 33 degree incline and accelerates down the incline at 0.20 m/s^2. 1. Find the friction force impeding its notion? 2. What is the coefficient of kinetic friction? *Are we dealing with Kinetic or Static Friction...this will effect coefficient corre...

**Physics**

A 13.0 kg box is released on a 33 degree incline and accelerates down the incline at o.20 m/s^2. A. Find the friction force impeding it's motion B. What is the coefficient of kinetic friction

**history- Cuban Revolution- please help**

how did the Cuban revolution affect the Caribbean?

**ALGEBRA**

Consider the following apportionment problem for College Town. Suppose each council member is to represent approximately 2,500 citizens. Use the apportionment plan requested in the problem, assuming there must be 10 representatives. North: 5,500 2.2 South: 9,000 3.6 East: 6,40...

**ALGEBRA**

Consider the following apportionment problem for College Town. Suppose each council member is to represent approximately 2,500 citizens. Use the apportionment plan requested in the problem, assuming there must be 10 representatives. North: 5,500 South: 9,000 East: 6,400 West: ...

**chemistry**

if a solution contains 255mL of ethanol and 375 mL ofwater, what is the percent of ethanol in the soution

**ALGEBRA**

Round 416,000 to two decimal places for me please

**ALGEBRA**

(a) If there are 70 voters and 5 candidates, how many total points would there be in a Borda count? (b) If there are 60 voters and 4 candidates, how many total points would there be in a Borda count? (c) If there are 900 voters and 3 candidates, how many total points would the...

**ALGEBRA**

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 60 people. (a) How many would you expect to be between 159 and 171 cm tall? (b) How many would you expect to be taller than 160...

**Art**

Thank you, Writeacher. Here is the last part of the same summary. Could you please check it? 1) The names of the ingredients are reported using an international code, INCI which is the same for all EU countries though it is also used in other countries, for example USA, Russia...

**Art**

I changed a few things from my previous mail. Could you check grammar and punctuation, Writeacher? Thank you! 1) I suppose you received the remaining balance because my bank has already taken the money from my bank account. 2) However, I would be grateful to you if you let me ...

**Art**

Ms. Sue, Writeacher I urgently need you to check this paragraph and suggest where I should look for more specific details on this topic. 1) The information appearing on cosmetics must be present directly on the container of the cosmetic and, if present, on the outer box. 2) Wh...

**Art**

Ms. Sue, I urgently need you to check this email. Thank you 1) I suppose you received the remaining balance because my bank has already taken the money from my bank account. 2) However, I would be grateful to if you let me know about that all the same. 3) In my previous post I...

**Science**

I left out the following statements. Thank you very much, Ms. Sue 1) The researchers in a group led by Paro, crossed the files of six generations. Thanks to this experiment, they were able to prove the temperature treatment changes the eye of colour of this specific strain of ...

**Art**

Could you please check scientific English in this short dissertation? Thank you, Ms. Sue. 1) Conrad Waddington introduced the term epigenetics in the early 1940s. He defined epigenetics as ‘‘the branch of biology which studies the causal interactions between genes an...

**Art**

Ms Sue, could you please help me express the following ideas? Thank you. 1) Have you thought of a possible common theme? Of course we'll have to wait till September because the school year is about to end. Actually, it ends next Wednesday. 2) If my mother is well, I may co...

**Art**

Ms. Sue, I need to include these sentences I posted a few days ago to Writeacher. Thank you very much! 1) I'm forwarding you the link to the European Etwinning certificate of quality. 2) Online projects carried out among two or more European schools can be eligible to rece...

**Art**

Ms. Sue, could you please check this part,too? Thank you 1) He explained why he wrote Gomorrah; he did it for the new generations, seeing kids who dream to be a killer, who see in crime the only way of achievement. Boys and girls without hope. He saw his land without a future,...

**Art**

Could you please check this paragraph, Ms.Sue? This is the last of the day. 1)He is a 28-year-old young writer and journalist born in Naples. He grew up in its hinterland ruled by the Camorra. Since he was a child, he has been aware of the mob's existence, its huge economi...

**Art**

Could you please check how I can improve the following sentences? Thank you, Ms Sue. 1) Through his novel Orwell describes the totalitarian governments that had governed Europe in the period between the two wars. As a matter of fact, much of Oceanic society is based upon the U...

**Art**

Can you please check if my rephrase is OK? I need to rephrase my previous post. I can't leave the sentences as they were. Thank you, Ms Sue. How does George Orwell describe Winston Smith in the opening of Nineteen Eighty-Four? Make referece to the place where he lives, the...

**Art**

Ms Sue, can you please check my post until Writeacher comes back? I would be extremely grateful to you. I need to rephrase this sentence. 1)Give a detailed description of Winston Smith as he appears in the opening to George Orwell's 1984. Refer to the place where he lives,...

**Art**

Writeacher, will you be on holiday over the weekend? I really hope you'll write a reply.

**Art**

Could you please check these few sentences, Writeacher. Thank you. 1) I'm forwarding you the link to the European Etwinning certificate of quality. 2) Online projects carried out between two or more European schools can be eligible to receive both a national and a European...

**Art**

Could you please check these few sentences. Thank you. 1) I'm forwarding you the link to the European Etwinning certificate of quality. Online projects carried out between two or more European schools can be eligible to receive both a national (in 2) Our participating stud...

**Art**

Thank you very much. Could you please check these few lines, Writeacher? 1) My pupils haven't received any email from their Irish partners yet. What shall they do? They would have liked to get in touch with their partners before the school exchange in October. 2) By the wa...

**Physics**

Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00 m from speaker A directly to your right and 3.50 m from speake...

**ALGEBRA**

Assume that a dart is randomly thrown at the dartboard shown here and strikes the board every time. The payoffs are listed on the board. How much should you be willing to pay for the opportunity to play this game? (Give your answer to the nearest cent.) $48 -$13 $24 $6 $3 $12 $

**physics**

Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the tops of towers. Suppose a siren produces a sound that has an intensity level of 120 dB at a distance of 2.0 m. How far away can the siren be heard?

**trig**

solve equation for exact solution if possible leave answer in degree sinx/2=square root of 2- sinx/2

**math**

A Basic Car Rental charges a daily rate of $29 plus $.20 per mile. Suppose that you rent a car for a day and your bill (before taxes) is $79. How many miles did you drive the car?

**ALGEBRA**

Use Venn diagrams to check the validity of the argument All cats are animals. This is not an animal. Therefore, this is not a cat.

**physics**

The ability to hear a "pin drop" is the sign of sensitive hearing. Suppose a 0.50 g pin is dropped from a height of 27 cm, and that the pin emits sound for 1.4 s when it lands. Assuming all of the mechanical energy of the pin is converted to sound energy, and that th...

**Math**

Samuel is researching what happens during family dinners in his town. He asks five of his friends about a typical evening. Which of the following is not true? 1)His friends are the sample. 2)The population is all families in his town. 3)He used convenience sampling. 4)The town...

**ALGEBRA**

A single card is selected from an ordinary deck of cards. The sample space is shown in the following figure. Find the following probabilities. (Enter the answers either as fractions or as decimals rounded to three places.) P(five of clubs) = Incorrect: Your answer is incorrect...

**ALGEBRA**

A single card is drawn from a standard deck of cards. Find the following probabilities. A face card is a jack, queen, or king. P(face card | queen) = Correct: Your answer is correct. P(three | not a face card)

**ALGEBRA**

I THINK 60 (not sure)

**math **

find the area of a triangle with the base 1 1/4 and height 4/9 ( Hint the area of a traingle is equals half the product of its base and height ) I came up with .55 or 11/20 is this correct ???

**math **

Translate the phrase into a mathematical expression and then simplify. Five time a number decreased by twice the same number This is what I got 5 X x-x-x ? I think and sure am way off

**ALGEBRA**

Find the probability whose odds against are given in the problem. Odds against are 10000 to 7.

**ALGEBRA**

A single card is drawn from a standard deck of cards. Find the following probabilities. A face card is a jack, queen, or king. P(face card | queen) = P(three | not a face card) =

**ALGEBRA**

Two cards are drawn from a standard deck of cards, and one of the two cards is noted and removed. Find the following probabilities of the second card. P(spade | spade) = P(red | red) =

**ALGEBRA**

Evaluate the expression. \( _5^9 \) \( _3^5 \) \( _1^3 \)

**ALGEBRA**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. Assume 365 days in a year. (Round your answer to the nearest cent.) $3,000 balance, 21% ra...

**ALGEBRA**

5% offer based on dealer cost please.

**ALGEBRA**

Make a 5% offer on a Volkswagen New Beetle that has a sticker price of $22,120 and a dealer cost of $20,860. (Round your answer to the nearest dollar.)

**ALGEBRA**

Suppose you have a $1,000 charge on a credit card charging 1.5% monthly interest using the adjusted balance method. The minimum payment due in May is $40. How much will you save in interest charges in June by paying $80 instead?

**fraction**

Can you give me a example of how to campare fraction

**fraction**

How do I campara the fraction 7/8 and 8/9

**Math**

Think about dividing with 15. Give a reason to divide15 into 3 equal groups. Then give a reason to divide 15 into equal groups of 3. How are the stories alike? How are they different?

**Physics**

A 1.4 kg mass is attached to a spring with a force constant of 56 N/m. If the mass is released with a speed of 0.26 m/s at a distance of 8.6 cm from the equilibrium position of the spring, what is its speed when it is halfway to the equilibrium position?

**Foreign languages**

I left out the following examples. Thank you, Writeacher. 1) He told us the match has been cancelled (correct should be: was/had been cancelled?). 2. My father suggested that I should do up the house before selling it. I should have my house done up .... 3. You needn’t ha...

**finance**

the bubba corp. had net income before taxes of $200.000 and sales of $200.000. if it is in the 50% tax bracket ifs after tax profit margin is?

**Math- Radius**

I'm confused on how to use the formula. I got an answer but it wasn't right.

**Math- Radius**

The volume of a sphere is V = 14,130 ft3. What is its surface area? What is it's radius? The volume of a sphere is V = 4443 m3. What is its surface area? What is it's radius?

**Easy Math**

I got surface area = 27.9 And the volume is 4.80 Is that right if I'm suppose to round to the nearest 10th?

**Art**

I still have a few doubts on some corrections you did yesterday, Writeacher. Could you please check them? Thank you very much. 1)It took me a long time to grow into the job. (Also: It took a long time for me to grow into.....?) 2) She handed down a precious string of pearl to ...

**math**

Franklin deposited $1,400 in a savings account that accrues simple interest at 6.75%. What is the balance in his account at the beginning of the third quarter?

**Math**

Bob takes 45 minutes each day for lunch. He does not get paid for the lunch break. How many hours does he work in a 5-day workweek if he checks in at 8:00 a.m. and checks out at 5:15 p.m. each day?

**Health**

Could you please check if these questions are all possible? Thank you, Writeacher. 1)Focus on the first Hanoverians and answer briefly the following questions. What were the first political parties in Britain, where did they descend from and who sided with them? What did the m...

**Health**

Writeacher, could you please check if everything is OK? Thank you very much. 1) My classmates always keep me from work (from the lesson??). I was on the phone with the bank when we were cut off. 2) I was so cross with my boss that I hung up on him.Peter had his house done up b...

**Art**

I left out the following statements. Could you please check them? Thank you. Rephrase the following sentences using a modal verb. 1.Maybe Alan missed the train. Alan may have missed….. 2.I’m sure he didn’t break the vase. He can’t have broken 3.I’m cer...

**NATURAL SCIENCE**

Does a train traveling at 20 mph on a curved track have a constant velocity?

**math**

what is the value of y when x=-3 in the equation y=-x+9?

**language arts**

It also affects the way in which one family relates to another, to the neighborhood, and to the community What correction should be made to this sentence?

**language arts**

It also affects the way in which one family relates to another, to the neighborhood, and to the community What correction should be made to this sentence?

**econ**

Moved along its existing production possibilities curve

**math**

what is the greatest product you can make by multiplying a 3 digit number by a 1 digit number? What were your factors?

**geomety**

thanks so much

**geomety**

A boat is heading due east at a constant speed of 35 mi/h. There is an 8 mi/h current moving north. What is the boat’s actual speed and direction?

**Nutrition**

1. consuming nothing but sugary drinks skipping meals eating to fast eating late at night 2.not really for that was not the full issue 3.maybe he was allergic 4. it has a soothing, coating effect 5 by eating a more balanced meal 3 times a day 6 eat a more balanced meal if no t...

**Chemistry**

The Ksp value for PbS(s) is 8.0x10^-28. By using this value with an electrode potential from Appendix E in the textbook, determine the value of the standard reduction potential for the reaction: PbS(s) + 2e- --> Pb(s) + S2- (aq)

**Physics**

A 52kg ice hockey player moving at 11m/s slows down and stops over a displacement os 8.0m. Calculate the net force of the skater.

**ALGEBRA**

A car dealer will sell you a used car for $8,672 with $672 down and payments of $157.66 per month for 60 months. What is the APR? (Use the formula on page 156. Round each answer to the nearest tenth.)

**ALGEBRA**

Find the amount of interest and the monthly payment for the loan. Purchase a car for $42,800 at 2.4% add-on rate for 5 years. (Round your answers to the nearest cent.) $ interest $ per month

**ALGEBRA**

Simplify the expression. (5 x - 1)(x**2 + 4 x - 3) =

**ALGEBRA**

Solve the inequality. (Enter INFINITY for infinity and -INFINITY for -infinity as needed.) 6<=5 - y

**ALGEBRA**

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) x2 - 5x + 5 = 0 x = x =

**ALGEBRA**

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2+9 x+20

**ALGEBRA**

Simplify the expression. (5 x - 1)(x**2 + 4 x - 3)

**ALGEBRA**

If $835 is invested in an account that earns annual interest of 4.5%, compounded semiannually, what will the account balance be after 13 years? (Round your answer to the nearest cent.)

**ALGEBRA**

If $695 is invested in an account that earns 21.75%, compounded annually, what will the account balance be after 15 years? (Round your answer to the nearest cent.)

**ALGEBRA**

If $835 is invested in an account that earns annual interest of 4.5%, compounded semiannually, what will the account balance be after 13 years? (Round your answer to the nearest cent.)

**ALGEBRA**

Calculate the monthly finance charge for the following credit card transaction. Assume that it takes 10 days for a payment to be received and recorded and that the month is 30 days long. (Round your answer to the nearest cent.) $300 balance, 18% rate, $250 payment, previous ba...

**ALGEBRA**

Suppose an insurance agent offers you a policy that will provide you with a yearly income of $290,000 in 25 years. What is the comparable annual salary today, assuming an inflation rate of 4%?. (Round your answer to the nearest cent.)

**ALGEBRA**

Convert the following credit card rate to the APR. Oregon, 1 3/4% per month

**ALGEBRA**

A car dealer will sell you a used car for $8,734 with $734 down and payments of $384.67 per month for 24 months. What is the simple interest rate? (Round each answer to the nearest tenth.)

**ALGEBRA**

Find the APR for the following loan (monthly payments). (Round your answer to the nearest full percent.) Purchase a refrigerator for $2,100 at 20% add-on interest for 3 years.

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