Wednesday

February 22, 2017
Total # Posts: 334

**CALCULUS**

Differentiate: P(t)=50(2)^(t/2)

*June 17, 2010*

**chemistry**

1.0 of a 4.0 solution is added to water so that the final volume is 8.0 .

*May 24, 2010*

**math**

Suppose that a natural number from 1 through through 11 inclusive is selected at random. What is the probability that the number selected is even if you know that it is prime?

*May 23, 2010*

**math**

Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50 inches. The formula for the perimeter of a rectangle is P=2L+2W. a) Set up an equation for the perimeter involving only L, the length of the rectangle. B) ...

*May 11, 2010*

**physics**

the speed of a transverse wave on a string is 450 m/s while the wavelength is .18m. the amplitude of the wave is 2mm how much time is required for a particle of the string to move through a total distance of 1km

*April 25, 2010*

**adult education statistcs**

if a researcher were studying the effects of a teaching method on patient learning outcomes, how must he or she word the research questions to use a t test for statistical differencesand what type of data should be collected?

*April 22, 2010*

**adult education**

if researchers were studying the effects of teaching methods on patient learning outcomes how must they word the research question to use t-test for statistical differences?

*April 22, 2010*

**math**

Can someone assit me with my two math problems Assume that the salaries of elementary school teachers in the united states are normally distributed with the mean of 36,000 and a standard deviation of 6,000. What is the cut off salary for teachers in the bottom 10%? A physical ...

*April 18, 2010*

**math**

Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1 Set 2 Set 3

*April 5, 2010*

**math**

Following are three sets of letters. Draw one letter from Set 1 and place it in Set 2. Then draw one letter from Set 2 and place it in Set 3. Finally, draw a letter from Set 3. What is the probability that the last letter drawn is a B? B C B B B B Set 1 Set 2 Set 3

*April 5, 2010*

**english**

Critique this paragraph:Wife beating affects a woman both physically and emotionally. Having little or no charge of financial matters, or plans, these women devote themselves to their husbands and families, often resulting in a loss of friendship and interests. They live in ...

*March 31, 2010*

**Math**

Oh, okay thank you Jen

*March 20, 2010*

**Math**

I cant thank you enough, Ms. Sue! I hope you have a wonderful evening

*March 20, 2010*

**Math**

Thanks Ms. Sue Perform the computation. (-20) - (-1) A) -19 B) -21 C) 21 D) 19 =-19 Compute the value: |– 6 – 4| =-10 Evaluate: (–9)( –7)( –5)( –2) A) 630 B) -630 C) -621 D) 621 (-63)(-10)=-630 David's company has to ship 3300 boxes of ...

*March 20, 2010*

**Math**

Thank you. If you don't mind can you look over some more problems if available? I just want to ensure that I am doing the problems correctly

*March 20, 2010*

**Math**

oh okay so I jus need to subtract correct? 20*9=180 189-176=4 right?

*March 20, 2010*

**Math**

Hi these are the problems I attempted, can someone tell me If I did them correctly? Thanks in advance3 Jane has invited 126 people for a pizza party. If each pizza has 18 slices and she estimates that she needs 3 slices per person, then how many pizzas does she need to order? ...

*March 20, 2010*

**algebra**

Cole's two student loans totaled $31000. One of his loans was at 2.8% simple interest and the other at 4.5%. After one year, Cole owed $1024.40 in interest. What was the amount of each loan?

*March 19, 2010*

**Math**

Thank you Ms. Sue, for helping me with my problem.

*March 2, 2010*

**Math**

Use the ideas of additive and multiplicative inverses to solve the following equation: –7y + 12 = –2

*March 2, 2010*

**Volume of a rectangular prism**

My daughter has this question and it does not give the length, width, or height of the prism. It only gives the volume and asks to give the approximate volume of the box if the sides are twice as long as they were originally.

*March 1, 2010*

**Math**

Bob's frog can travel 6 inches per jump, Kim's frog can travel 9 inches, and Jack's frog can travel 13 inches. If the three frogs start off at point 0 inches, how many inches will it be to the next point that all three frogs touch?

*February 27, 2010*

**chemistry**

A stock solution was prepared by dissolving exactly 0.4000 g of pure ASA (180.16 g/mol) in 10.00 mL of NaOH and heating the solution to a gentle boil. After cooling to room temperature, the solution was poured into a 250-mL volumetric flask and diluted to the mark with DI ...

*January 28, 2010*

**Chemistry**

how do you find the molar volume of a gas?

*January 24, 2010*

**chemistry**

Determine the ionization energy of a hydrogen atom (in kJ/mol) if the electron is in its ground state. (Hints: Use the Rydberg equation, remember E=hc for a single H atom, and R=109678x10–2nm–1 )

*January 17, 2010*

**chemistry**

divide 25 g by the molar mass of nacl

*January 17, 2010*

**chemistry**

thank you!!

*January 17, 2010*

**chemistry**

i calculated n from pv=nrt but, when i divided it into 40.4 g of c5h12, i got the molar mass of the compound with is around 72. after that, i had no idea what to do

*January 17, 2010*

**chemistry**

A 40.4 g sample of a gas with the empirical formula C5H12 occupied a volume of 3070 mL with a pressure of 5016.0 torr at 168 °C. Enter the molecular formula of the compound.

*January 17, 2010*

**Chemistry**

You have 2.0 g of solid A, 100.00 mL of water (100.0 g of water), and the total mass of solid A combined with 100.00 mL of water is found to be 102.0 g. The mass percent of A in this solution is

*January 14, 2010*

**algebra**

You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. a)Write an inequality that demonstrates how much money you will be willing to spend on the project.

*December 14, 2009*

**math**

Find a rational number between 1/8 and 2/4

*December 14, 2009*

**math**

Order each of the following decimals from greatest to least: a)1.4519, b)1.4519, c)1.4519, d)1.4519, e)-0.134, f)-0.13401, g)0.13401 For this one there lines over these numbers a)519 b)9 c)none d)19 e)none f)401 g)401

*December 13, 2009*

**math**

Paul read 20 pages of a book in 15 minutes. (a) What is Paul’s reading rate of pages per minute? (b) If he continues to read at the same rate, how many pages will he read in 1 hour?

*December 8, 2009*

**National Deploma Graphics**

What are the changes between realisum and abstraction in Europe ?

*November 19, 2009*

**physics**

It is greater than 150 N

*October 9, 2009*

**SOCIAL STUDIES**

without our two great political parties cutting acrOSS ECONOMIC AND GEOGRAPHIC INTEREST, DEMOCRACY AS WE KNOW IT COULD NEVER HAVE BEEN MADE TO FUNCTION, THE AUTHOR OF THIS STATEMENT PROBABLY MEANT?

*October 6, 2009*

**Algebra 1**

13/18 divided by 20/27

*October 6, 2009*

**math**

x^4y^2 when x=5/6 and y = -3/5 pls help .. i don't get this

*September 27, 2009*

**scince**

how many milligrams are in one oz

*September 16, 2009*

**history**

in what ways does Magna Carta still impact laws

*August 10, 2009*

**anthropology**

i am sorry are there links and where can i find it in culutural anthropology

*August 4, 2009*

**anthropology**

There are anthropological links between social science and natural science

*August 4, 2009*

**history**

What was the role of the Mayflower Compact in creating the New Plymouth society?

*August 3, 2009*

**history**

so i don't unerdstand then how were there differences important to the international state of affairs in 1450?

*August 3, 2009*

**history**

so i don't unerdstand then how were there differences important to the international state of affairs in 1450?

*August 3, 2009*

**history**

how were the differences from north america, asia, eurasia, and europe important to the international state of affairs in 1450?

*August 3, 2009*

**Health**

I know how treatments have changed but we are talking about paying for them. How was health care payed for back in the old days. The only method of payment I can think of is giving the physician some meat, or grain.

*June 18, 2009*

**Health**

It refers to the doctors

*June 18, 2009*

**Health**

I need help with this question. I need some more help please. How has healthcare providers eveolved over time. The only thing that i can think of is treating the patient and receiving something that they have such as meat, or grain.

*June 18, 2009*

**mathematics**

Squareroot of (0.0256/25) giving your answer in standard form. Is the ans (0.0256/25)= 0.001024 Squareroot of 0.001024 = 0.032

*June 13, 2009*

**HEALTH**

I don't think that mileage should be included, other test and treatments should be those treatments could prevent a illness. I don't think anybody should be denied anything that would help them remain healthy, in good condition, and to live a longer life.

*June 11, 2009*

**HEALTH**

I think that there should not be limits on the amount of health care provided because the proper treatment is necessary. I feel that everyone should be obligated to received health care help as often as needed for there safety and precautions. When the amount of health care is...

*June 11, 2009*

**HEALTH**

What do you see as the purpose of health insurance? Should there be limits on the amount of health care provided? If yes, what criteria should we use to ration health care? If no, how should health care be financed so that everyone has access?

*June 11, 2009*

**History**

These web site sights didn't help

*April 30, 2009*

**History**

were can I find information about this question? The exploration and settlement of the American continents by Europeans initiated contact between Europeans, Native Americans, and slaves brought from Africa. How did these diverse interactions affect each group? Which group do ...

*April 30, 2009*

**math**

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

*March 15, 2009*

**math**

a bin contains seven red chips, nine green chips, three yellow chips, and six blue chips. Whats the probability od drawing a red chip, replacing it, then drawing a blue chip

*March 15, 2009*

**us history**

What is the International State of Affairs of 1450?

*March 4, 2009*

**Algebra**

Thank you sooo much!

*March 2, 2009*

**Algebra**

40=-0.2x+45 i cant seem to solve this problem.

*March 2, 2009*

**math-help solve please**

how did you get (.035)

*February 19, 2009*

**math-help solve please**

find out how long it takes a $2700 investment to double if it is invested by 7% compounded semiannually. Round to the nearest tenth of a year . Use the formula A=P[1+r/n]^nt

*February 19, 2009*

**geology**

Can you answer this please? What kind of climate coincides with the old Cotton Belt in the United States? How would you characterize it? The U.S. Corn Belt coincides approximately with Dfa climate, which is assigned what name in the North American climate map in your textbook...

*February 8, 2009*

**7th grade**

can there be a prepositin in the subject

*February 5, 2009*

**Poem: Incident in a rose garden: By Donald Justice**

The subject of the poem is talking about death. Is this right?

*January 24, 2009*

**Math**

531 miles on 27 gallons

*November 17, 2008*

**algebra**

-2/17 + p = -2/15

*October 23, 2008*

**algebra**

42xy/54xy

*October 23, 2008*

**Algebra**

find the equivelent of -d(-69)

*October 23, 2008*

**algebra**

x/6=-10 what does x stand for and I need help with 10t + t + 4/9t what is the value of t

*October 23, 2008*

**com 150 week 6**

body parsgraphs and topic outline and working references list check point

*October 8, 2008*

**com 150**

brainstorming and brain mapping

*October 8, 2008*

**Algebra**

Can someone please help me??!!! i don't get this at all!! can you explain it step by step please? :) Ellen and Allen have a lemonade stand. One sixth of their earnings E must be used to pay for supplies for the next day. Each child then gets to keep half of the remaining ...

*September 18, 2008*

**algebra**

Jim is able to sell a hand-carved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him?

*September 12, 2008*

**Math**

Thanks Bob!

*September 4, 2008*

**Math**

Writing to Explain: Which is greater, the greatest whole number with 5 digits or the least whole number with 6 digits?

*September 4, 2008*

**Microeconomics**

You have this chart of combinations of clothing and food. You have to find the marginal opportunity cost and the total cost of producing the second unit of clothing. And then same for the third unit of clothing. Clothing: 4 3 2 1 0 Food: o 7 13 18 22

*August 28, 2008*

**Wi-yu tea**

HAve anyone tried the wi-yu tea? does it works? any side effects?

*August 23, 2008*

**The Human Body**

should i try the wi-yu tea to help me lose weight?

*August 23, 2008*

**HCA 240**

Write a 150- to 200-word script for a radio ad that promotes a healthy musculoskeletal system in old age. Address the risk factors for: arthritis, osteoporosis, injuries from falls. Incorporate prevention strategies such as: proper nutrition (calcium, diet) Don't need any ...

*August 14, 2008*

**HCA 240**

Sara loved to run. Sha watched the track meets at school even as a first grader. An asthmatic. She occasionally had to use an inhaler, but seemed determined to be an athlete. SHould Sara be discouraged from pursuing her goal?

*August 8, 2008*

**ecology**

Identify a viewpoint given in the video that highlights the importance of biodiversity. Do you believe that every species is connected to one another as expressed in the video? Why or why not?

*July 1, 2008*

**Substitution method to solve system of equations**

y - 2x = -5 3y - x = 5 Please help me out.

*May 20, 2008*

**Physics**

An apartment has a living room whose dimensions are 2.5 m 4.8 m 5.9 m. Assume that the air in the room is composed of 79% nitrogen (N2) and 21% oxygen (O2). At a temperature of 27°C and a pressure of 1.01 105 Pa, what is the mass (in grams) of the air?

*April 28, 2008*

**Physics**

An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 4.60 m3 and the temperature raised to 30.5°C, what will be the pressure of the gas? Pa I was able to get 173.81...

*April 28, 2008*

**Physics**

I'm getting 1.415*10^27, but my homework is telling me its wrong. Isn't Avogadro's number 6.022*10^23

*April 28, 2008*

**Physics**

A runner weighs 560 N (about 130 lb), and 74% of this weight is water. (a) How many moles of water are in the runner's body? moles (b) How many water molecules (H2O) are there? molecules I was able to get part (a), but I'm not sure how to get part (b)

*April 28, 2008*

**Physics**

I'm not sure what that is.

*April 28, 2008*

**Physics**

In a diesel engine, the piston compresses air at 302 K to a volume that is 0.0628 of the original volume and a pressure that is 48.2 times the original pressure. What is the temperature of the air after the compression? Can anyone help me work this problem?

*April 28, 2008*

**Physics**

Three moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 430 to 160 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include the algebraic sign. J

*April 20, 2008*

**Physics**

An ideal gas at 6.0°C and a pressure of 1.92 105 Pa occupies a volume of 2.10 m3. (a) How many moles of gas are present? moles (b) If the volume is raised to 4.60 m3 and the temperature raised to 30.5°C, what will be the pressure of the gas? Pa

*April 20, 2008*

**Physics**

In an automatic clothes drier, a hollow cylinder moves the clothes on a vertical circle (radius r = 0.39 m), as the drawing shows. The appliance is designed so that the clothes tumble gently as they dry. This means that when a piece of clothing reaches an angle of above the ...

*April 3, 2008*

**Physics**

A child is twirling a 0.0116 kg ball on a string in a horizontal circle whose radius is 0.102 m. The ball travels once around the circle in 0.560 s. (a) Determine the centripetal force acting on the ball. N (b) If the speed is doubled, does the centripetal force double? yes no...

*April 3, 2008*

**Physics**

A car travels at a constant speed around a circular track whose radius is 2.5 km. The car goes once around the track in 430 s. What is the magnitude of the centripetal acceleration of the car?

*April 2, 2008*

**Geometry**

Thanks! I've been working on that problem like.. all morning.

*January 18, 2008*

**Geometry**

Can the Isosceles Triangle Theorem be written as a biconditional? If yes, rewrite it as one, if no, explain why not.

*January 18, 2008*

**environmental science**

If you were an environmental researcher and were given funding to assist with one environmental issue, which one of the following topics would you choose to spend your funds on? · Human Population · Atmospheric Pollution · Water Resources · ...

*January 14, 2008*

**Math - 3rd grade**

Writing to Explain: Which is greater, the greatest whole number with 5 digits or the least whole number w/ 6 digits?

*January 7, 2008*

**US Gov**

Whay is a congressional support agency and what is its function?

*January 2, 2008*