Saturday

December 20, 2014

December 20, 2014

Total # Posts: 166

**Physics**

Two noises produce sound levels of 70 and 80 dB when acting separately. Find the sound level in dB when the sources act together.
*December 6, 2014*

**math**

Five three digit numbers including N were to be added. While adding, the reverse of N was added by mistake instead of N. Hence the summ increased by 11 times the summ of the digits of N.Eight times the difference of N's units and hundreds digit is 6 more than twice its ...
*November 27, 2014*

**math**

While adding ten two-digit numbers the digits of one of the numbers were interchanged. As a result the sum of all the ten numbers increased by a value which was four less than that number. Three times the sum of the digits of the original number is ten less than the number. ...
*November 13, 2014*

**math**

A bag has balls of four colours - red,blue,green and pink.Half the total number of balls are pink. One-fourth of the number of green balls equals one-third of the numher of blue balls. The number of pink balls is 4 less than twice the total number of green and blue balls. The ...
*November 13, 2014*

**math**

*neat and good
*November 10, 2014*

**math**

Thank you very much. Explained neat and wast. I was breaking my head for this.
*November 10, 2014*

**math**

An amount of $9000 is divided among four persons A,B,C and D. The sum of shares of A,C and D is four times the share of B. The sum of shares of B and D is equal to four-fifths the sum of shares of A and C. Find the share of D. Please help!! How to frame equation for share of ...
*November 10, 2014*

**math**

Thank you!
*November 4, 2014*

**math**

Liz,John and Kim had some amount of money.Liz gives half of her amount to John, who then gives half of what he now has to Kim. Kim gives half of what she has now to Liz, who, now has exactly what she started with. If the sum of John's initial amount and twice Kim's ...
*November 4, 2014*

**Chemistry**

The Ksp for BaCrO4 is 1.2X10-10. Will BaCrO4 precipitate when 10 mL of 1 X10-5M Ba(NO3)2 is mixed with 10 mL of 1X10-3M K2CrO4? I am not sure where to start
*October 23, 2014*

**physics**

a projectile is dropped from the top of a building - it falls 1900 ft prior to reaching the ground. determine the magnitude of the acceleration in ft/second squared to the nearest tenth. Question 1 options:
*October 5, 2014*

**English**

Grammatical ones are #1,3,5,7,8,9,11,13,15,18. All forms of ing are not ungrammatical only some. Most sentences that consists of He is would be He's An example would be He is feeling happy. Incorrect He's feeling happy. Correct
*July 11, 2014*

**geography**

The Alternative for the Americas agreement of the early 2000's is primarily aimed at A. creating a Latin American Union B. inviting foreign investment from Asia C. improving ties with the European Union D. excluding the United States from Latin America My answer is D, if ...
*July 11, 2014*

**Geography**

Regarding tropical rainforests, the term evapotranspiration refers to the fact that A. deforestation causes a decline in atmospheric oxygen. B. the humidity of rain forests can produce local and regional precipitation C. deforestation causes a loss of soil fertility due to ...
*July 11, 2014*

**English**

Answer is number 1
*July 11, 2014*

**geography**

In the post-industrial era, an edge city is a/an A. urbanized development that is an extension of a megalopolis B. complex of warehouses, shopping malls and offices located along traffic routes C. merger of several residential suburbs into one entity D. large suburban ...
*July 11, 2014*

**Statistics**

No idea where to begin... Do men or women watch more T.V. per day? To answer the question two samples were select with the help of SPSS and the following results were produced. Is there a significant difference between men and women in watching T.V.? Perform five-step model to...
*June 22, 2014*

**chemistry: please check work**

How many grams of solute are contained in 64.3 mL of 0.0238M KOH? Do I convert 64.3ml to L=.0643L Multiiply .0643L and .0238M KOH=.00153 Multiply .00153 and 56.105 g/mol KOH=.0858g KOH
*May 5, 2014*

**Chemistry: Please check my work!I am stumped**

When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...
*April 28, 2014*

**Chemistry: please help, I am stumped**

When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...
*April 28, 2014*

**chemistry**

A. 4C3H5N3O9>12CO2+5N2+2NO+10H2O Not sure about the other yet. I am trying to figure it out , so I can explain it to my daughter. Is A correct?
*April 27, 2014*

**chemistry**

When nitroglycerin (C3H5N3O9) explodes, it decomposes into the following gases: CO2, N2, NO, and H2O. If 239g of nitroglycerin explodes, what volume will the mixture of gaseous produces occupy at 1.00 atm pressure and 2678oC? a. Write a balanced equation for the reaction. b. ...
*April 27, 2014*

**chemistry**

I have no clue how to do b and c.
*April 20, 2014*

**chemistry**

If 2.33 L of propane (C3H8) at 24oC and 67.2 kPa is completely burned in excess oxygen, how many moles of carbon dioxide will be produced? a. Write a balanced equation for the reaction. b. Use stoichiometry to find the volume of carbon dioxide. c. Use the ideal gas law to ...
*April 20, 2014*

**chemistry**

How do I actually do this? I am trying to show my daughter how to do it and have no clue.
*April 7, 2014*

**chemistry**

Convert the following pressures to pressures in atmospheres. a. 151.98 kPa b. 45.6 psi
*April 7, 2014*

**Chemistry**

A gas has a pressure of 4.62 atm when its volume is 2.33 L. If the temperature remains constant, what will the pressure be when the volume is changed to 1.03 L? Express the final pressure in mm Hg.
*April 7, 2014*

**CHP**

how to calculate FTE allowing 15% adjustment fact.
*April 6, 2014*

**books (Henry VIII)**

Thank you very helpful
*October 30, 2013*

**books (Henry VIII)**

I know I have posted this question before put under the wrong context I accidentally wrote Hamlet instead of Henry VIII. That's because I was working on both pieces of work. My answers have changed and want to know if they are correct. Please check over my work, any help ...
*October 30, 2013*

**books (Hamlet) (look over questions please)**

c. Cardinal Wolsey suggests that he is absolved from responsibility for Buckingham's death when he states A. "This, and all else... is most false" (lines 24-26) B. "The duke by law / Found his deserts" (lines 26-27) C. "You have as little honesty ...
*October 27, 2013*

**books (Hamlet)**

The Earl of Surrey's most cutting use of irony is..? Choose from either.. A) "Thou art a proud traitor, priest." (line 9) B) "Whilst your great goodness, out of holy pity, / Absolved him with an axe." (lines 22 and 23) C) "Your goodness, / Since ...
*October 27, 2013*

**chemistry**

na+c1-(aq)+hc1(aq)
*September 25, 2013*

**Math**

Math Question = an aquarium holds 6 and 1/4 gallons of water. the water level dropped to 4/5 of this amount .how much water should be added to fill the aquarium Above is my son's math question and we can't figure out how to solve it. The possible answers are: 74 and 1...
*September 16, 2013*

**physics**

a river flows due east at 1.50 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10m/s due north relative to the water. (a) what is the velocity of the boat relative to the shore? (b) if the river is 300 m wide, how far...
*February 28, 2013*

**physics**

a soccer player kicks a rock horizontally off a 40.0-m-high cliff into a pool of water. if the player hears the sound of the splash 3.00 s later, what was the initial speed given to the rock? assume the speed of sound in air to be 343m/s.
*February 28, 2013*

**math**

how to make a parallellagram with a base of 8cm and perimeter is 28cm?
*February 13, 2013*

**Math**

Solve the puzzle =RIGHT(LEFT($B$2,84),1) =RIGHT(LEFT($B$2,17),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,234),1) =RIGHT(LEFT($B$2,138),1) =RIGHT(LEFT($B$2,4),1) =RIGHT(LEFT($B$2,173),1) =RIGHT(LEFT($B$2,2),1) =RIGHT(LEFT($B$2,209),1) =RIGHT(LEFT($B$2,4...
*November 9, 2012*

**Grammar**

Actually this is a run-on.
*October 9, 2012*

**Geometry**

mÚAOC = 7x - 2, mÚDOC = 2x + 8, mÚEOD = 27
*August 30, 2012*

**MATH**

I have to make 4 square dog pens fit into a 169 square meter yard. the yard is square whole numbers If you square the yard it isn't whole numbers. 84.5 One of the pens is 24 square meters Please help me begin.
*April 8, 2012*

**Chemistry**

N2(g) + H2(g) -> NH3(g) ; how many moles of NH3 is is produced when 0.67 moles of N2 reacts with H2?
*March 4, 2012*

**Math**

express each answer in exponential form using the indicated bases: 1. 4 x 4 x 4 x 4, base 2 2. 100 x 100 x 100, bases 2 and 5 3. 4 x 8 x 4 x 8, base 4
*June 23, 2011*

**Chemistry**

What do sodium bicarbonate and magnesium hydroxide have in common?
*June 13, 2011*

**1/2 cup fraction word problem**

Jane is using a recipe to bake cookies.Recipe calls fo a little less than 1/2 of choc chips. Which amount is less than 1/2? 4/8 2/3 4/7 3/7 off the top of my head I see that 4/8 is equal should I use ldc and make 2/3 4/6 4/7 8/14 3/7 6/14 then what?? should I reduce?? then I ...
*June 10, 2011*

**fractions**

fraction word problem. please advise on how to work the problem Phillip and Jane had a pie each. Phippip ate 1/4 of his and Jane ate more of the pie than Phillip. Which fraction of his pie could Jane have eaten. Possible answers: 2/5 1/6 2/8 or 1/8 Please advise whether or not...
*June 10, 2011*

**fractions**

fraction word problem. please advise on how to work the problem Phillip and Jane had a pie each. Phippip ate 1/4 of his and Jane ate more of the pie than Phillip. Which fraction of his pie could Jane have eaten. Possible answers: 2/5 1/6 2/8 or 1/8
*June 9, 2011*

**Math**

STATISTICS Why is collecting data on the same time everyday more accurate when compared to collecting data at different times everyday?
*May 28, 2011*

**math**

What is the sin of 495 degrees?
*May 25, 2011*

**Statistics/Social Psychology**

I have collected ssps data and am having trouble taking the data and putting it into a coherent sentence. I can't paste the chart but here is what I have. An independent-samples t-test was conducted to compare the length of jail sentence given based on the favorability to ...
*April 28, 2011*

**Math**

I need to find the domain of f(x) = (3x+3)/ (x^2 -3). I keep getting (U SQUARE Root of 3 and - Square root of 3 U ) Does that mean that the answer is all real numbers? I know that x can not=3, What am I doing wrong? Thanks.
*April 24, 2011*

**Math**

f(x)=(x^3-27)/(x^2-3x) I need to find the slant. If the vertical asymptotes is x=0 then is the slant y=x+3?
*April 24, 2011*

**6th grade math**

Linda is painting a design. Each tube of paint will cover an area of 51 square centimeters. At least how many tubes of paint will Linda use to paint section c? Note: section c is 6cm The answers to choose fom are a) 1 b) 2 c)3 d) 4 I tried 51 divided by 6 ,but it is not coming...
*April 23, 2011*

**6th grade math**

answer f or g maybe g is the answer ?
*April 23, 2011*

**6th grade math**

Which proportion can you use to find the width of a full size railroad track? of 1 millimeter for every 87 millimeters in a full size train. The model railroad cars run on a track that is 16.5 mm wide. f) 1/87 = x/16.5 g) 1/87 = 16.5/x h) 1/x= 87/16.5 j) 16.5/87 = x/1
*April 23, 2011*

**6th grade math**

These numbes are arranged fom greatest to least. Which value is next? 7/8 0.75 5/8 then blank f)1\2 g) 0.58 h) 6\8 j)0.65
*April 23, 2011*

**6th grade math**

Is there a quick way to get the answer to this problem without doing a calculation of each possible answer. These numbers are arranged from greatest to least. Which value is next. F) 1/2 G) 0.58 H) 6/8 J) 0.65
*April 23, 2011*

**algebra**

How to simplify the square root of 45 plus 4 square root 5
*April 15, 2011*

**algebra**

How to simplify the square root of 45 plus 4 square root 5
*April 15, 2011*

**algebra**

How to simplify the square root of 45 plus 4 square root 5
*April 15, 2011*

**proper fraction to mixed number**

Thanks
*March 19, 2011*

**proper fraction to mixed number**

The instructions say to convert 3/4 - 1/8 to a mixed number the answer I have is 5/8 Can you convert a proper fraction to a mixed number ?? Suzanne
*March 19, 2011*

**chemistry**

How do you compute the rate of effusion of one gas compared to another, like Neon to CBr4?
*March 16, 2011*

**physics**

A group of swimmers is resting in the sun on an off shore raft. They estimate that 1.1m separates a trough and an adjacent crest of surface waves on the lake. In addition, they count 23 crests that pass by the raft in 15.7seconds. What is the frequency of these surface waves? ...
*March 13, 2011*

**Algebra 2**

How can you check if 3+i is a zero of the equation x^4-6x^3+6x^2+24x-40?
*February 25, 2011*

**math/ CIRCUMFERENCE of a circle**

A person has a measuring wheel that records the distance the wheel is rolled along the ground. The circumference of the wheel is one yard. If the wheel is pushed half a mile, how many times will the wheel go around (1mi=5280 ft)?
*January 24, 2011*

**math/ CIRCUMFERENCE of a circle**

A person has a measuring wheel that records the distance the wheel is rolled along the ground. The circumference of the wheel is one yard. If the wheel is pushed half a mile, how many times will the wheel go around (1mi=5280 ft)?
*January 24, 2011*

**6th grade math**

Form and equivalent division problem for 5 / 1/3 by multiplying both the dividend and divisor by 3. Then find the quotient. IS it 5 / 3/9 Do I finish by mutliplying 5/1 x 9/3(reciprocal)?
*January 24, 2011*

**6th grade math**

Is the answer to G - 2 2/5 = 5 4/5 G = 7 6/5 ?
*January 23, 2011*

**6th grade math**

thanks
*January 15, 2011*

**6th grade math**

What is the number of 5/6s in 3? Is the answer 18/ 5 ? If not, please explain.
*January 15, 2011*

**6th grade math**

How many 5/6's are in 1? Is the answer 6/5 ??
*January 15, 2011*

**methods of sbtracting mixed fractions**

How did you change 9 70/84 to 8 154/84?
*December 20, 2010*

**methods of sbtracting mixed fractions**

Hello, I need did a subtraction problem with mixed numbers by converting the LCD of the denominator. However, when I went to Algebra.help they did the problem by converting the mixed problem to an improper fraction and then worked it that way. However, I know that the answers ...
*December 20, 2010*

**pre algebra 6th grade**

Tara's bank account contains $250.00. She made only one deposit exactly one year ago. The bank account pays a simple interest rate of 8%. How much money did Tara deposit in the account one year ago?
*December 7, 2010*

**physics**

Why can't you hit a feather in mid-air with a force of 200 N?
*December 2, 2010*

**mat116**

Graph the system of inequalities: x+3y <or= 9 3x+y <or= 9 x >or= 0 y >or= 0
*November 16, 2010*

**6th grade math**

Problem: How many 3/4ths are in 1? Is the calculation correct? 1 / 3/4 1 x 4/3 = 4/3
*November 14, 2010*

**6th grade english**

Is "reminds" a present, present participle, past, or past participle? Kim "reminds" Robin of their five days at camp.
*November 14, 2010*

**stat**

a sample of 150 adults is composed of 100 women and 50 men. estimate the standard error of the proportion for the female population
*November 9, 2010*

**6th grade fractions**

What does manipulative mean?? Which fraction manipulative covers 1/2 of 1/3 ?
*November 6, 2010*

**math**

What is the opposite of 10?
*October 30, 2010*

**HIS 115**

Thank you for your help!
*September 26, 2010*

**HIS 115**

What does "claims of sovereignty" mean?
*September 26, 2010*

**HIS 115**

I am reviewing the Gutierrez Map and I need to know, what does this mean: How might the map’s indication of where Native American’s lived have strengthened European claims of sovereignty? Could you please reword this question so I can understand what it is asking.
*September 26, 2010*

**trig**

a wheel has a diameter of 18 inches and makes one full turn in 12 seconds and picks up a piece of gym how high off the ground is that piece of gum 18 seconds after the wheel picked it up
*September 11, 2010*

**Body Systems**

The choroid and the auricle are similar because?
*June 8, 2010*

**Com 220**

What does it mean when asked to paraphrase a article? Do I use my own words or the authors words?
*March 29, 2010*

**adult education**

What materials/resources do I need to do a training seminar on sexual harassment and unlawful discrimination in the work place? This is for an exam I am taking through Penn Foster... This is a written exam and does not have any "questions". I only need the above ...
*March 13, 2010*

**Chemistry**

The density of liquid mercury is 13.5 g/cm cube. What mass of mercury (in kg) is required to fill a hollow cylinder having an inner diameter of 2.00 cm to height of 25.0 cm?
*January 27, 2010*

**calc**

What is the volume of the solid with given base and cross sections? The base is the region enclosed by y=x^2 and y=3. The cross sections perpendicular to the y-axis are rectangles of height y^3.
*January 26, 2010*

**grammar**

activity
*October 13, 2009*

**grammar**

drawing horses
*October 13, 2009*

**grammar**

Another activity I enjoy is drawing horses. What is simple subject?
*October 13, 2009*

**grammar**

what is the simple subject in "My favorite activity is skating?"
*October 13, 2009*

**English**

Okay, this is a little lame, maybe slightly corny, but: The English Language: It's Not as Simple as ABC. It really depends on if you mind the corniness.
*February 18, 2009*

**Algebra**

Solve each system graphically. #6. 4x - y = 9 x - 3y = 16 I need to find at least one pair of points that fit. I tried using the elimination method and got (5 and 6/7, -22), which did not even work for the first equation. I also tried graphing it but it was too hard to tell. ...
*February 18, 2009*

**Oh... thanks!**

Silly me... we had just learned the elimination method and I had forgotten about it. Thank you! :-)
*February 18, 2009*

**Algebra**

Solve each system graphically. 4y = x + 8 3x - 2y = 6 Basically, what I have to do is find at least one point that works. I tried graphing it on graph paper, and it looked like about (1, 3.5). But when I tried placing in the equations, it did even work in the first one. I do ...
*February 18, 2009*