Tuesday

July 28, 2015

July 28, 2015

Total # Posts: 3,309

**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.
*May 27, 2012*

**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 ...
*May 26, 2012*

**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...
*May 24, 2012*

**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...
*May 23, 2012*

**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)
*May 23, 2012*

**ALGEBRA**

I THINK 60 (not sure)
*May 23, 2012*

**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 ???
*May 21, 2012*

**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
*May 21, 2012*

**ALGEBRA**

Find the probability whose odds against are given in the problem. Odds against are 10000 to 7.
*May 21, 2012*

**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) =
*May 21, 2012*

**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) =
*May 21, 2012*

**ALGEBRA**

Evaluate the expression. \( _5^9 \) \( _3^5 \) \( _1^3 \)
*May 20, 2012*

**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% ...
*May 20, 2012*

**ALGEBRA**

5% offer based on dealer cost please.
*May 20, 2012*

**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.)
*May 20, 2012*

**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?
*May 20, 2012*

**fraction**

Can you give me a example of how to campare fraction
*May 17, 2012*

**fraction**

How do I campara the fraction 7/8 and 8/9
*May 17, 2012*

**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?
*May 15, 2012*

**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?
*May 15, 2012*

**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 ...
*May 14, 2012*

**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?
*May 13, 2012*

**Math- Radius**

I'm confused on how to use the formula. I got an answer but it wasn't right.
*May 13, 2012*

**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?
*May 13, 2012*

**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?
*May 13, 2012*

**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 ...
*May 13, 2012*

**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?
*May 13, 2012*

**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?
*May 12, 2012*

**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 ...
*May 12, 2012*

**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 ...
*May 12, 2012*

**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 ...
*May 10, 2012*

**NATURAL SCIENCE**

Does a train traveling at 20 mph on a curved track have a constant velocity?
*May 9, 2012*

**math**

what is the value of y when x=-3 in the equation y=-x+9?
*May 9, 2012*

**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?
*May 9, 2012*

**econ**

Moved along its existing production possibilities curve
*May 8, 2012*

**math**

what is the greatest product you can make by multiplying a 3 digit number by a 1 digit number? What were your factors?
*May 8, 2012*

**geomety**

thanks so much
*May 7, 2012*

**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?
*May 7, 2012*

**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 ...
*May 5, 2012*

**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)
*May 4, 2012*

**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.
*May 3, 2012*

**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.)
*May 2, 2012*

**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
*May 2, 2012*

**ALGEBRA**

Simplify the expression. (5 x - 1)(x**2 + 4 x - 3) =
*April 30, 2012*

**ALGEBRA**

Solve the inequality. (Enter INFINITY for infinity and -INFINITY for -infinity as needed.) 6<=5 - y
*April 30, 2012*

**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 =
*April 30, 2012*

**ALGEBRA**

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2+9 x+20
*April 30, 2012*

**ALGEBRA**

Simplify the expression. (5 x - 1)(x**2 + 4 x - 3)
*April 30, 2012*

**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.)
*April 29, 2012*

**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.)
*April 29, 2012*

**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.)
*April 29, 2012*

**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 ...
*April 29, 2012*

**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.)
*April 29, 2012*

**ALGEBRA**

Convert the following credit card rate to the APR. Oregon, 1 3/4% per month
*April 29, 2012*

**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.)
*April 29, 2012*

**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.
*April 29, 2012*

**ALGEBRA**

Fill in the blanks. (Round your answers to the nearest dollar.) Interest Principal Rate Time Future Value
*April 29, 2012*

**Foreign languages**

I left out this short paragraph. Could you please check it? 1) I really hope everthing is Ok with you. My students are really looking forward to starting the email partnership. I would be therefore be extremely grateful to you if you could let me have all the email adresses by...
*April 26, 2012*

**trig**

(sec6x+sin2x)/(sin6x-sin2x)=tan4xcot2x
*April 25, 2012*

**chemistry**

1 _____is defined as one-half of the distance between the nuclei of two adjacent metal atoms in the close packed crystal lattice ionic radius metallic radius covalent radius atomic radius 2 Except for rubidium and caesium, all common cations are smaller than all common anions ...
*April 23, 2012*

**physic**

1 A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true? The passenger is in motion relative to the passer-by The passer-by is stationary relative to the passenger Both ...
*April 23, 2012*

**Math**

Thank you
*April 22, 2012*

**Math**

Part A Lisa has downloaded 260 songs on her mp3 player,of her260 songs, 117 are pop music. What percent of lisas songs are pop music. Part B country music makes up to 20% of lisas 260 songs. How many songs are country music .. PartA already answered I need explanation part B
*April 22, 2012*

**Math**

Part A Lisa has downloaded 260 songs on her mp3 player,of her260 songs, 117 are pop music. What percent of lisas songs are pop music. PartB. Country music makes up 20% of Lisa 260 songs. How many songs are country music.
*April 22, 2012*

**Math**

Lisa has downloaded 260 songs on her mp3 player,of her260 songs, 117 are pop music. What percent of lisas songs are pop music. Can someone explain please
*April 22, 2012*

**statistics**

Joan has j
*April 20, 2012*

**statistics**

Data from the latest census was analyzed. It was determined that one-parent households spend less on food away from home that do two-parent households. The mean amount spent by 30 one-parent households is $1876 and the standard deviation is $113. The mean amount spent by 30 ...
*April 18, 2012*

**math**

find second derivative of 30x+27.
*April 17, 2012*

**Chemistry**

How much volume (in mL) of 0.75 M K2SO4 (aq) and water must be mixed to prepare to 150.0 mL of 0.10 M K2SO4 solution? Thanks!
*April 16, 2012*

**Math**

Simplifying (4ab x (sqrt 2b)) - (3a x (sqrt18b^3)) + (7ab x (sqrt6b))
*April 14, 2012*

**Biochemistry**

In the electron transport chain, electrons from FADH2 are eventually used to reduce O2 into H2O. Experimentally, the proton motive force created by this process will generate 2 ATP molecules from ADP and Pi, using ATP synthase. From the information provided below, calculate ...
*April 10, 2012*

**Chemistry**

Hemoglobin, an oxygen-carrying protein in blood, contains 4 iron atoms per molecule and the iron comprises 0.34% of the molecules mass. What is the molecular weight of hemoglobin? Thanks!
*April 9, 2012*

**Econ**

Explain how a perfectly competitive market promotes productive efficiency (minimum average costs).
*April 9, 2012*

**chem**

If 0.208g of an unknown salt of oxalate ion requires 25mL of 0.02 M MnO4^- solution, calculate the molar mass and write the molecular formula of the unknown ( oxalare is the anion, what is the cation?).
*April 8, 2012*

**Java**

Write a program that will compute the paychecks for a small business. The business owner would like to be able to enter in an employee name, pay rate, and number of hours worked. The owner would like be able to specify the number of employees, and after all have been entered, ...
*April 7, 2012*

**Math**

Kaity draws a scalene triangle. Two sides measure 5 inches and 3 inches? Can the third side measure 3 inches? Why or why not?
*April 6, 2012*

**AP CHEMISTRY**

A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e− -> Cu(s) I2(s) + 2 e− -> 2 I−(aq) The cell is operated at 298 K with [Cu+ ] = 2.7 M and [I− ] = 2.7 M. (a) Determine E for the cell at these concentrations. (b...
*April 6, 2012*

**Pre-Calc Helppp!!!**

Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136 (angle B=38) Round your answer to two decimal places.)
*April 5, 2012*

**Statistics**

Data from the latest census was analyzed. It was determined that one-parent households spend less on food away from home that do two-parent households. The mean amount spent by 30 one-parent households is $1876 and the standard deviation is $113. The mean amount spent by 30 ...
*April 4, 2012*

**Pre-Calc**

For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10°, and y = 10°. Round your answer to two decimal places.) Show work please!!!
*April 2, 2012*

**statistics**

The U.S. Department of Agriculture claims that the mean consumption of coffee by the person in the United States is 24.2 gallons per year. A random sample of 120 people in the United States shows that the mean coffee consumption is 23.5 gallons per year with a standard ...
*April 2, 2012*

**physics**

no it would be false
*April 2, 2012*

**physics **

if a race cars velocity increases from 4 m/s to 36 m/s over a 4 s time interval, it average acceleration would be 10 m/s2.
*April 2, 2012*

** physics **

what is the average velocity of the car from 0.0s to 40.0 s
*April 2, 2012*

**finance**

Weighted Average Cost of Capital)As a member of the Finance Department of Ranch Manufacturing, your supervisor has asked you to compute the appropriate discount rate to use when evaluating the purchase of new packaging equipment for the plant. Under the assumption that the ...
*March 31, 2012*

**macroeconomics**

explin the inner and outer flows of an open system
*March 29, 2012*

**Math**

Points A and B are noted on the straight line y=2x+4.If the distance between them is 5,what is the difference between their y-coordinates?
*March 29, 2012*

**social science**

Professor Koo examined the literature on AIDS and could find nothing that examined children’s attitudes toward parents and friends with AIDS. To examine this study, Dooley should undertake a(n) a. examination of reductionism b. descriptive study c. explanatory study d. ...
*March 28, 2012*

**Transistion to College Math**

A rifle bullet is fired vertically with initial speed 490 m/s. how long does it take the bullet to reach its greatest height?
*March 28, 2012*

**computers**

I need some help with creating a simple, but automatic site status (uptime/downtime) monitor script in ColdFusion. Basically I would like the script to check if an application on my site is accessible or not every 60 minutes. If the application is down at 60 minutes, then I am...
*March 26, 2012*

**physics**

What would the equation for the drag force the ball experiences while it is moving upward at constant velocity be?
*March 24, 2012*

**math**

Simplify. (-3u)^5
*March 21, 2012*

**algebra**

how do i solve 10x+10 over 3x-6 divided by 2x+2 over 3xy-6y
*March 19, 2012*

**physics**

A 4.00-m length of light nylon cord is wound around a uniform cylindrical spool of radius 0.500 m and mass 1.00 kg. The spool is mounted on a frictionless axle and is initially at rest. The cord is pulled from the spool with a constant acceleration of magnitude 2.86 m/s2. (a) ...
*March 19, 2012*

**statistics**

The mean life of a set of batteries in a T83 calculator is 525 with a standard deviation of 35 hours assume normal distribution is normal whats is the probability that set will last for more the 540 hrs
*March 17, 2012*

**Chemistry**

Calculate the pH after 0.011 mol NaOH is added to 1.00 L of each of the four solutions. a) 0.100 M propanoic acid (HC3H5O2, Ka= 1.3 10-5) b) 0.100 M sodium propanoate (NaC3H5O2) c)pure H2O d) 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
*March 15, 2012*

**Safety**

Please help me to unscramble these 40 letters into 2 sentences that has 12 words. A A A A E E E E E E E I I I I O O U U C D F J K L L L N N N P P R S T T T T T Y . The puzzle includes some letters as follows:(use blanks from above) _ _ / _ _ f _ _ _ /_ s / _ / _ _ _ _ , / _ h ...
*March 15, 2012*

**algebra**

5x + 5 = .2x + 29. I know x is 5 but what are the steps to get there?
*March 13, 2012*

**Algebra**

9 inches.
*March 12, 2012*

**algebra**

The Environmental Protection Agency (EPA) monitors air quality in U.S. cities. The function f gives the annual number of days with unhealthy air quality in Los Angeles, California, for selected years. X: 1995 1997 1999 2000 2003 f(x):113 60 56 87 88 (a) Find F(1995)and ...
*March 11, 2012*