Monday

March 2, 2015

March 2, 2015

Total # Posts: 183

**Chemistry**

How much ethylene glycol (C2H6O2, the major component of antifreeze) must be added to 1 L of water to keep it from freezing at -20 oC? Kf = 1.86 oC/m.
*February 3, 2015*

**college, math**

Karen and Wayne need to buy a refrigerator because theirs just broke. Unfortunately, their savings account is depleted, and they will need to borrow money in order to buy a new one. Sears offers them an installment loan at 12% (add-on rate). If the refrigerator at Sears costs...
*November 17, 2014*

**CHEMISTRY **

Total Pressure in a vessel containing Oxygen collected over water at 25 *C was 723 torr. The Vapor Pressure of water at that Temperature is 23.8 torr. What was the pressure of gas?
*October 5, 2014*

**Calculus**

How do I solve for the investment of 20,000 with an interest rate of 7.5 compounded annually for 10 years? This is what I have so far and I don't know if I'm using the right formula. n=10 and I=r=0.075 A=P(1+i)n =20,000(1+0.075)10 This is where I'm stuck
*September 8, 2014*

**HCA 311 Health Care Financing & Information System**

Using the example of “From the Front Lines” in Chapter 6 of your text, calculate the break even for the number of procedures. Use an electronic spreadsheet to show how you computed the break even and embed the spreadsheet in your paper. Discuss the impact of the ...
*June 15, 2014*

**math**

length of blanket is 80 inches and width is 60 inches,how long the border has to be to go around the edge of the blanket?
*May 27, 2014*

**maths literacy,geography,lifescience,,agricultural**

which career can i pick with this subjcts
*February 28, 2014*

**Greatest Common Factor**

There sre 16 rocks that are green and 24 rocks that are blue. Sharon is dividing her green and blue rock collection into bags. Each bag will contain the same number of each color of rock. How many rocks of each colr will be in each bag?
*February 8, 2014*

**chemistry**

You are analyzing a solid isolated from a reaction and find that its boiling point is over 1000 ∘C. You dissolve the compound in water solution and recrystallize it to produce some solid crystals that you use to determine that the compound is a crystalline solid. Which ...
*January 23, 2014*

**MAT126: Survey of Mathematical Methods **

All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: List the ages of two people in your life, one older than you and one younger than you. It would be best if the younger person was 15 years of age or ...
*December 20, 2013*

**advanced pre algebra**

-6 >/= to g + 4
*December 10, 2013*

**algebra**

One cellular phone carrier charges $26.50 a month and $0.15 a minute for local calls. Another carrier charges $14.50 a month and $0.25 per minute for local calls. For how many minutes is the cost of the plans the same?
*December 3, 2013*

**prealgebra**

One cellular phone carrier charges $26.50 a month and $0.15 a minute for local calls. Another carrier charges $14.50 a month and $0.25 per minute for local calls. For how many minutes is the cost of the plans the same?
*December 3, 2013*

**prealgebra**

A number equals six less than four times a number. What is the number?
*December 3, 2013*

**prealgebra**

Four times a number is 21 more than the number. What is the number?
*December 3, 2013*

**math**

Julius sold 5x as many computers as Sam sold last year. In total they sold 78 computers. How many computers did Julius sell. **Solve each problem by WRIING and solving the equation.
*November 13, 2013*

**math**

write -5.5 recurring as a fraction or mixed number in simplest form.
*November 3, 2013*

**math**

Why did you reverse fraction to multiply?
*November 3, 2013*

**math**

if each guest eats 2/3 of a small pizza, how may guests would eat 12 small pizzas.
*November 3, 2013*

**Geometry**

ray OB is the bisector of angle AOC and ray OC is the bisector of angle BOD. m<AOD =120 find m<AOB
*September 5, 2013*

**math **

Find the complex zeros of the polynomial function, and write f in factored form: f(x)= x^3 - 8x^2 + 30x - 36
*August 21, 2013*

**math urgent please**

i think I know the answer to this question but could u please explain it to me how much smaller is the digit in the thousands place than the digit in the ten thousands place in the number 55,512 is the answer 10. could u help explain it
*August 12, 2013*

**basic math**

i think I know the answer to this question but could u please explain it to me how much smaller is the digit in the thousands place than the digit in the ten thousands place in the number 55,512 is the answer 10. could u help explain it
*August 12, 2013*

**Statistic/Psychology**

90
*July 26, 2013*

**math**

(3)-3=
*June 20, 2013*

**algebra**

how many turn around points are in the function f(x)=(x-1/3)^2(x-2)^3
*May 17, 2013*

**Algebra**

7882
*May 14, 2013*

**Physics conceptional question Please help**

THANK YOU DAMON!
*April 24, 2013*

**Physics conceptional question Please help**

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current...
*April 24, 2013*

**Physics PLEASE HELP**

When UV light of wavelength 295nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.50eV. What is the work function of the metal? W0 in eV
*April 24, 2013*

**Physics Please help out**

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current...
*April 24, 2013*

**Physics**

A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 275keV . What was the energy of the photon? E=in MeV What was the wavelength of the photon? wavelength in m Please help thank you!
*April 23, 2013*

**Physics**

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current...
*April 23, 2013*

**Physics**

When UV light of wavelength 295nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.50eV. What is the work function of the metal? W0 in eV
*April 23, 2013*

**Physics**

When UV light of wavelength 295nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.50eV. What is the work function of the metal? W0 in eV Please someone help me out. Thank you.
*April 22, 2013*

**Physics**

Photons of energy 12eV are incident on a metal. It is found that current flows from the metal until a stopping potential of 8.0V is applied. What would happen if the wavelength of the incident photons was tripled? Would the energy be 4eV,so 12/3=4, and there will be no current...
*April 22, 2013*

**chemistry**

A sample of solid sulfur is heated with an electrical coil. If 105 joules of energy is added to a 12.4 gram sample initially at 24.4°C, what is the final temperature of the sulfur?
*April 8, 2013*

**chemistry**

80g of NaCl are dissolved in 400g H2O. if the vapor pressure of the water is 40 mmHg , what is the vapor pressure of NaCl above the solution?
*February 12, 2013*

**math **

Which of the following salaries will have a purchasing power of $24,035 if the inflation rate is five percent?
*January 24, 2013*

**Math**

The cheetah can 60 miles per hour. How many miles the can run for every half. Hour up to 2 hours?
*January 24, 2013*

**science**

what is the difference between weathering and erosion
*January 7, 2013*

**algebra**

12square root(-10)^12
*December 26, 2012*

**HCR/210**

I need to find information pertaining to handling aeministrative data that a doctor does NOT need to see.
*December 14, 2012*

**chemistry**

given 2CH3OH+3O2->2CO2+4H2O 1. Calculate number of grams of CH3OH required to react with 34.0L of O2 at STP. 2. How many liters of CO2 at 18 degrees Celcius and 6.94 atm are produced when 3.40 mol of CH3Oh is burned completely. 3. What volume of CO2 is produced if 7.11L of ...
*November 13, 2012*

**Physical Science**

If liquid pressure were the same at all depths, would there be a buoyant force on an object submerged in the liquid?
*October 23, 2012*

**PHYSICAL SCIENCE**

How do the pressure variation with depth affect our ability to explore the ocean?
*October 22, 2012*

**HCR210**

What is the administrative data a doctor does not need to see? Also whjy do they not need to see it?
*October 1, 2012*

**Physics**

A sandbag is dropped from the helicopter 125 m above the ground. What is its velocity at a height 60.0 m and when it hits the ground?
*September 30, 2012*

**writing algebriac expression**

The total amount of money (in cents) in y quarters, 7y dimes, and (2y - 1) nickles.
*September 26, 2012*

**algebra**

hi i need help on these problems..i have tried online to do it myself but i still dont understand what they are asking... compare the numbers in each exercise using an inequality symbol.. 4/5, square root of 1.3 pie, 19/6
*September 17, 2012*

**Chemistry**

What chemical compound is formed in the reaction when 6M HCl and 1M NaOH is reaction?
*August 30, 2012*

**Physics**

The average speed of a truck is 60.0km/h. How long does it take for the truck to travel 265km?
*August 24, 2012*

**Physics**

Light travels at a speed 3x10^8 m/s. What distance does it travel in a time of 0.1s?
*August 24, 2012*

**Algebra**

Simplify. Please show all work. 6b^2 - 4b + 3b^4 - (7b^3 + b^4 - 4b)
*June 20, 2012*

**Chemistry-Please check**

When the kidneys secrete hydrogen ions, does the pH of the urine drop or is carbonic acid formed in the blood? Secondly, when the kidneys secrete hydrogen ions, it would raise the pH of the blood, correct? I'm really confused onthis and would appreciate some help
*April 25, 2012*

**Statistics**

Thanks MathGuru! Makes a ton more sense now!
*April 20, 2012*

**Statistics**

An automobile dealership has as one of its performance goals that the proportion of its automobiles sold that are deemed “good value for the money” by the purchasers be at least .90. For a random sample of 400 automobiles sold over the past six months, 352 were ...
*April 20, 2012*

**intermediate algebra**

2*49
*April 13, 2012*

**Prob/Stat**

If P(A) = .3 and P(B) = .4 and P(AandB) = .2 what is P(A/B)? P(B/A)? Are A and B indepentent?
*April 1, 2012*

**statistics**

According to a recent studey, 1 in every 4 women has been a victim of domestic abuse at some point in her life. Suppose we have randomly and independently sampled twenty-five women and asked each whether she has been a victim of domestic avbuse at some point in her life. Fidn ...
*March 29, 2012*

**Statistics**

A recent survey found that 72% of all adults over 50 wear glasses for driving. In a random sample of 100 adults over 50, what is the mean and standard deviation of the numbe who wear glasses?
*March 29, 2012*

**Intergrated Arts**

Looking at examples from Whitney collection, what qualities do the art works have in common?
*March 3, 2012*

**math**

thanks Ms. Sue
*February 14, 2012*

**math**

What multiplication fact could you use to find a number that can be divided equally by 8 and 9? My answer is 8 x 9 = 72. Is this correct?
*February 14, 2012*

**Algebra II**

How long would it take to earn $7000 on a 3500 dollar investment at rate of 7.8% compounded continuously? Would it be something like this: 7000=3000*(1+0.078)/? not sure about what to divided by??? Help-I'm really confused!!!!
*November 21, 2011*

**Spanish-9th grade**

Could you please check if I read and answered the questions correctly? My answers are below in the separate area after the questions. Thank you No vivo en una ciudad. Vivo en el campo. La vida en el campo es muy divertida. Me divierto mucho con los animales y con las ...
*November 5, 2011*

**Pre-Calc-bob pursley recheck please**

I thought that once I got to 105/16 I should take the square root which is factored out so I can't take anything out of the 105,however I can take the square root of 16 = 4 and you take the square root of (x+5/4)^2 to get it out of parentheses, so therefore the 2 roots are...
*September 7, 2011*

**Pre-Calc**

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 ...
*September 7, 2011*

**Pre-Calc-Please check my answer-I think I have it**

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 ...
*September 7, 2011*

**Pre-Calc-Please check my answer-I think I have it**

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 ...
*September 7, 2011*

**Pre-Calc-Please check my answer-I think its correc**

Could someone please check these-I had tried one last night but it was really wrong so I'm been working-hopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x-10 =0 2x^2 + 5x-10+10=0+10 2x^2 + 5x = 10 2x^2 + 5x/2 = 10/2 ...
*September 7, 2011*

**Pre-Calc-Please check my answer**

I did do it the long way-you way is much simpler Thank you all
*September 6, 2011*

**Pre-Calc-Please check my answer**

Please help-I'm stuck really bad Thank you for any help you can provide What are the roots of the equation x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are...
*September 6, 2011*

**Pre-Calc/TrigPlease check this answer I redid**

x^2 -4x + 3 = 0 x^2 - 4x = 3 x^2 +2(-2)x + -2^2 = -3 = -2^2 x^2 + -4x + 4 = 1 (x + -2)^2 = 1 qrt (x+-2)^2 = sqrt 1 x+-2 = plus or minus 1 therefore x=1 x=3 roots are 1 and 3
*September 6, 2011*

**Pre-Calc/Trig**

Please help-I'm stuck really bad What are the roots of the equation x^2 - 4x + 3 = 0 I think I was suppose to use b^2 - 4ac so it would be -4 - (-4)*1*3 = 12 so the roots would be 12 and -12 Thank you for any help you can provide
*September 6, 2011*

**biology**

increase in the amount of living material and formation of new structures in an organism: a characteristic of all living things
*August 25, 2011*

**stats.& Prob **

Astudy shoed 53% of college applications were submitted online. Assume this result is based on sa simple random sample of 1000 applications with 530 submitted online. Use 0.01 sig.level to test claim that among all student applications the percentage submitted online is equal ...
*August 15, 2011*

**Algebra**

Annual profit in thousands of dollars is given by the function, P(x) = 12x-100, where x is the number of items sold in thousands x ¡Ý 10. Will this profit function have a maximum if so what is it?
*July 2, 2011*

**English**

Does this poem make sense? Chocolate This is my weakness I must confess The smell of chocolate is so sweet It is so good and a wonderful delight My one and only friend late at night Here to satisfy all my needs and wants Without I don’t know what I would do Chocolate is ...
*June 18, 2011*

**English**

Did I correct my triolet? My Mother My mother always wiped away all my tears God must have sent this woman from above When I cried she had a listening ear My mother always wiped away all my tears She took away all my worries and fears There was no doubt of my mother’s ...
*June 18, 2011*

**English**

Is this better. (Triolet)? Does it make sense? My Mother My mother always wiped away all my tears God must have sent this woman from above When I cried she had a listening ear My mother always wiped away all my tears She took away all my worries and fears There was no doubt of...
*June 18, 2011*

**English**

I have to write a triolet.Would you proof read this one for me? Title: My Mother My mother always wiped away all my tears God must have sent this woman from above When I cried she had a listening ear She took away all my worries and fears My mother always wiped away all my ...
*June 18, 2011*

**sentence skills**

which is the most effective coordinating conjunction to jointhe following independent clauses.... Miriam wants a digital picture frame,___________ she cannot afford one just yet. a) but b) for c) so d) and
*May 26, 2011*

**chemistry**

I need to write an equation tht takes place at a temp of 400 K and with a catalyst of iron to make ammonia gas from gaseous nitrogen and hydrogen
*May 21, 2011*

**physics**

is fluid pressure constant?
*March 29, 2011*

**Algebra II-Please check my calculation**

Thank you
*March 28, 2011*

**Algebra II-Please check my calculation**

Find center, vertices, co-vertices and foci for the following; (x-3(^2/49 + (y-4)^2/4 = 1 Center would be (3,4) A=7 b=2 Vertices would be found this way: (h+-a,k) (3-7,4) (3+7,4) Vertices = (-4,4) (10,4) Co-vertices (h,k+-b) (3,4-2) (3,4+2) Co-vertices=(3,2) (3,6) If ound &...
*March 28, 2011*

**Business Writing**

What comes first the business letter, the interoffice memorandum or the email
*March 6, 2011*

**Physics**

5.6
*March 4, 2011*

**chem**

first part is 2r = 16 second part is 16 * square root of 2 third part is 6 * square root of 3
*February 21, 2011*

**managerial economics**

I believe the answer is C.
*February 14, 2011*

**managerial economics**

assuming that the firm's goal is to maximize present value of the profits in the subsequent 5 years, which of the following flows of profit would achieve that goal? Justify your answer. Note that the flows are represented by 5-tuples, i.e. five number each of which ...
*February 14, 2011*

** dalton state**

what is 20+40=
*February 2, 2011*

**Math**

Simplify 1/2x-3/x+6
*January 25, 2011*

**MATH! PLEASE REPLY ASAP!**

OPQRS is a regular square-pyramid whose base has sides of 7 cm. Given that the total surface area of the pyramid is 161 cm2, find its slant height.
*January 23, 2011*

**chemistry**

A girl is celebrating her seventh birthday. Each guest is served one large slice of chocolate cake, a hamburger, French fries, and some oranges. Identify the food groups mentioned above. If one slice of chocolate cake contains 35g of carbohydrate, 15g of fat and 5g of protein...
*January 17, 2011*

**Physics-Please check my answer-I've been working o**

Thank you for the detailed answer-I actually get it and understand it-thank you again!!
*January 11, 2011*

**Physics-Please check my answer-I've been working o**

If I went tubing with my little sister, and I have a larger mass, why would we both reach, in terms of energy, the bottom of the hill at the same time; Originally I thought because we would both be accerlerating at the same rate but that doesn't explain the energy part ...
*January 11, 2011*

**Physics-Please check**

If I went tubing with my little sister, and I have a larger mass, why would we both reach, in terms of energy, the bottom of the hill at the same time; Originally I thought becuase we would both be accerlerating at the same rate but that doesn't explain the energy part ...
*January 11, 2011*

**crt/205**

I have trouble with labeling these statements if someone can help I would appreciate it. I need to know if the labeling is correct if not what is the correct labeling. I believe these are ambiguous or vague statements-1. federal reserve looking to spend upwards of 1 trillion ...
*October 31, 2010*