Saturday

December 20, 2014

December 20, 2014

Total # Posts: 501

**Probability**

1. Suppose there are two full bowls of cookies. Bowl #1 has 10 chocolate chip and 30 plain cookies, while bowl #2 has 20 of each. Our friend Fred picks a bowl at random, and then picks a cookie at random. We may assume there is no reason to believe Fred treats one bowl ...
*December 12, 2014*

**Statistics**

I plugged in the numbers and here's my answer... Company A: 1% x 550 = 5.5 are bad Company B: 6% x 850 = 51 are bad Total bad of defective stereos = 5.5 + 51 = 56.5 P(A | Bad) = 5.5 / 56.5 = 11/113 So Probability that the defective one is from A = 0.097345
*December 12, 2014*

**Statistics**

Use Bayes' theorem to solve this problem. A storeowner purchases stereos from two companies. From Company A, 550 stereos are purchased and 1% are found to be defective. From Company B, 850 stereos are purchased and 6% are found to be defective. Given that a stereo is ...
*December 12, 2014*

**math**

7 nails has a of 50g how many nails have a mass of 1/2kg
*November 15, 2014*

**algebra**

solve the literal equation for x. Square root 3x + 2y +5x=4, for x
*September 1, 2014*

**health**

I need help with this question. How do I code a 42 year old white male who accidentally injured his left index finger on a circular saw while working on broken shutters at home in his garage. The patient sustained a jagged laceration over the dorsal radial aspect of the index ...
*August 16, 2014*

**no**

A man on CNN News is during for this amt. 3,followed by 36 zeros. How much is that. . Thank you . Debbie
*May 20, 2014*

**Statistics **

You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random sample of 420 ...
*May 1, 2014*

**Statistics **

You want to know if there's a difference between the proportions of high school students and college students who read newspapers regularly. out of a random sample of 500 high-school students, 287 say they read newspapers regularly, and out of a random sample of 420 ...
*May 1, 2014*

**statistics**

construct a 95% confidence interval for the difference betwen the proportions of high-school students an college students who read newspapers regularly.
*April 30, 2014*

**Math**

The distance d1 in miles, a small plane is from its final destination is given by d(t) = 250 – 100t, where t is the time, in hours, remaining for the flight. Find and discuss the meaning of the intercepts of the graph of the function. (You must first solve and graph this...
*April 22, 2014*

**Social Gerontology**

I need an outline for the political embattlement for the aged (exp.,medicaid, medicare, disability, welfare, supplemental security income. Can you help me?
*February 23, 2014*

**AP Chemistry**

Approximately how much water should be added to 10.0 mL of 12.4 M HCl so that it has the same pH as 0.90 M acetic acid (Ka = 1.8 10-5)?
*February 16, 2014*

**Chemistry**

What is the typical 13 c nmr chemical shift range in ppm?
*February 7, 2014*

**math**

The formula Total cost = Cost + Shipping cost + Holding cost is used to find the total cost of a business asset. The formula can be written in symbols as T=C+S+H. Solve the formula for H, the holding cost of the asset.
*December 14, 2013*

**math**

thank you Eden
*December 14, 2013*

**math**

4x-11=25 what is x?
*December 14, 2013*

**math**

Thank you.
*December 13, 2013*

**math**

One company has $200,000 to distribute in dividends. There are 17,000 shares of preferred stock that earn dividends at $0.60 per share and 80,000 shares of common stock. How much per share does a common stockholder receive in dividends to the nearest cent?
*December 13, 2013*

**Math**

I need help understanding inequalities - like a+2<-3 or d-1.9<-8.7
*December 4, 2013*

**math**

rick borrows 48,000 the loan will be a 10% add-on loan interest will be charged for 2 full years, rick will repay on monthly basis what will the total amount of interest paid,what will be the monthly amount paid,what is true rate interest paid?
*November 2, 2013*

**biorganic**

equations of thereactions of both maleic acid and fumaric acid with (a) bromine (b) hydrogen chloride (c) catalytic hydrogenation.name the products of these reaction
*October 31, 2013*

**math**

water tower is 11 feet high diameter is 18 feet,how many cubic feet are in this tower?
*October 3, 2013*

**math**

a water tower that is 11 ft. high and the diameter 18 ft. how many cubic feet are in this tower?
*September 24, 2013*

**math **

The mean attendance of spectators at ball games is 120, the median is 125...what is the total attendance in 20 games?
*May 31, 2013*

**math**

Which fraction is greater than one whole? a. 1/7 B. 6/5 C. 9/9 d. 13/15
*May 12, 2013*

**Medical Transcription**

Thanks for your help!!
*April 5, 2013*

**Medical Transcription**

The patient obtained records in order to save the nurse a phone call to her previous doctor and she made sure to ask right away for this to be done to save time. Is this sentence a run-on, usable, or correct as is?
*April 5, 2013*

**Medical Transcription**

PUNCTUATION AND CAPITALIZATION The patient has had recurring episodes of paroxysmal nocturnal dyspnea and 3 pillow orthopnea. Associated symptoms such as lightheadedness, breathlessness, and exertional dyspnea occur during daytime hours. Is this statement correct for spelling...
*April 5, 2013*

**Chemistry**

Calculate the pressure of 0.800 moles of helium gas, when the gas is in a balloon with a volume of 2.30 L at a temperature of 32°C.
*March 24, 2013*

**math**

Tina completed 2/3 of her homework before dinner. George c ompleted 4/7 of his homework before dinner. Who completed a greater fraction of homework?
*February 21, 2013*

**calculus**

y= (x^3 - 2sqrx)/(x) y'=
*February 21, 2013*

**Math**

a square pizza measuring 8 inches by 8 inches that costs $10 or a round pizza with a 9 inch diameter that also cost $10
*February 2, 2013*

**algebra**

I need to graph f(x)=-2x Does it go, through -2 and y side of 2?
*January 30, 2013*

**algebra(help)**

The amount of money, in dollars, raised each year by a student club can be estimated by the function f(x)=150x-240,000 where x is the year with 2000<x<2010. How much money did the students raise in 2008? What is the slope of the graph of f? Interpret the slope as rate of...
*January 30, 2013*

**college algebra**

Identify where f increases and where f decreases. f(x)=5x+3 I think it's (3,5) increases and (3,-2) decreases?
*January 29, 2013*

**college algebra**

Find the domain: h(x)=√(x+4) How do I work this problem?
*January 29, 2013*

**Chemistry**

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.
*January 26, 2013*

**college algebra**

From 1988 to 2008 average annual tuition and fees at public colleges increased from $525 to $5500. Calculate the percent change over this time period. How do I set this up and solve it? Thanks for your help:-)
*January 24, 2013*

**college algebra**

(9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right
*January 23, 2013*

**college algebra**

(9.87x10^6)(34x10^11) I got 3.3558e19 but I don't think its right
*January 23, 2013*

**social impact on technology**

i think the answer is productivity. It also has offshoring.
*January 23, 2013*

**social impact on technology**

what the biggest cause of unemployment today? A. outsourcing B. Productivity
*January 23, 2013*

**college algebra**

Order of operation done by hand
*January 22, 2013*

**college algebra**

13√9+16 |5-7|^2 I got 9.40 but I think I might have done it wrong
*January 22, 2013*

**college algebra**

Find the center and radius of the circle (x+3)^2+(y-5)^2=13 I think the center is (-3,5) Radius is (13) but I don't know how to show the work for it.
*January 22, 2013*

**physics **

A uniforbm beam 6m long weighing 4kg rest on supports at p and q placed left and right 10m from each end of the beam weights of mass 10kg and 8kg are placed near p and q respectively on each end of the beam . calculate the reactions at p and q ?
*January 20, 2013*

**social impact on technology**

The article "Young at Risk" purposes that the young of humans and animals are more vulnerable to chemical pollutant exposure due to all of the following reasons except that: A. their brains are less sensitive than those of mature humans and animals. B. the young et ...
*January 18, 2013*

**tenchnology**

According to the textbook, there is an infinte amoount of time that our civilization can exist based on the following? A. our civilization is based on non-renewable resources B. Our production of nuclear weapons will lead to mass distruction C. At the present birth and death ...
*January 17, 2013*

**4th. grade english**

what is the rule for why "achieved' is spelled that way instaed of "achieveed"?
*January 16, 2013*

**math**

you are 6 years older than your sister she is 4 years older than your brother. write expressions to show your age and your sisters age if your brother is 4 years old.
*January 10, 2013*

**composition**

Develop a “Welcome Letter” for the visiting students. Keep in mind that the students have not lived in the United States nor attended a U.S. college before. What do they need to know about making and keeping friends here in the U.S.?
*December 17, 2012*

**Math**

4 9/20 make sure you have the same denominator. this is a subtraction problem. 7 1/4 turns into 7 5/20 and 2 4/5 turns into 2 16/20. since you can not subtract 16/20 from 5/20 you need to borrow from the whole which is 7. so 7 becomes a 6 and you add 20/20 +5/20 and get 25/20 ...
*December 5, 2012*

**Math**

make your denomimators the same. change 7 1/2 to 7 5/10 and subtract 6 3/10 = 1 2/10 or simplify and make it 1 1/5
*December 5, 2012*

**science**

its ok dear leaf no worries
*November 29, 2012*

**english**

where can I get a comparism and contrast for the perils of indifference and the power of non-violence
*November 7, 2012*

**BIOLOGY/CHEMISTY**

a student uses the unduiluted glucose stock solution in a reaction and finds that the absorbance values over 90 seceonds are all 1.900. What does this result tell you abou the enzyme activity of glucose oxidase in this reaction after the 90 seconds time point? Would it be ...
*October 28, 2012*

**math**

Since 12n = 12(5m+1)= 60m +12, our goal is to now count integers m such that 100 less than or equal to 60m +12<1000. Subtracing 12 from each part of the inequality, we get 88 lees than or equal to 60m<988. Dividing by 60, we get 2 less than or equal to m less than or ...
*October 25, 2012*

**math**

How many three-digit integers are multiples of both 4 and 6 and have a unit digit of 2?
*October 25, 2012*

**Physics**

PLEASE SOMEONE HELP ME WITH THIS DARN QUIZ. I'm so lost and all my teachers are too 'BUSY' to help me. :/ I'm getting so sick and tired of studying and not getting it but then having to take the blame for my instructor's folly. 2. Which of the following is...
*October 17, 2012*

**chemistry**

Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
*September 24, 2012*

**chemistry**

Describe how you would prepare 10 mL each of 2 M, 1.5 M, and 1 M NaCl solutions from a 2 M stock NaCl solution. Describe your actions–exactly what you woulddo–step-by-step–when preparing thissolution. Also show all calculations. Be sure all amounts include un
*September 24, 2012*

**Biology**

Write a brief description of the procedure required to make 10mL each of 2 M, 1.5 M, and 1 M NaCl solution from a 2 M Stock NaCl. Write the description.
*September 23, 2012*

**Biology**

Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.
*September 23, 2012*

**Chemistry**

Need Help!! Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water. I got help earlier but still could not figure out the calculations. Please help, it has been a while since i took chemistry. Thank you soo much
*August 29, 2012*

**Chemistry**

Describe how to make 2.5L of 0.1M HCL solution from 12M HCL concentrated solution and water. Thank you
*August 29, 2012*

**algebra 1**

how do you solve this equation with the substitution method. 1) 6x + 4y = 6/5
*August 21, 2012*

**geometry**

In Exam Figure 7, AA′ = 33 m and BC =7.5 m. The span is divided into six equal parts at E, G, C, I, and K. Find the length of A′B. Round your answer to two decimal places.
*August 19, 2012*

**Chemistry**

the structural formula,with atoms A,B,and C unspecified,is? [Q2] the formula is C3 H6 Br2 If the compounds is called 1,2-dibromopropane, A,B,and C must be...what?
*August 5, 2012*

**Chemistry**

in describing an equilibrium reaction involving hydrogen gas, iodine gas, and hydrogen iodide gas, all of the statements about equation Q=[Hl]2 divide [H2][l2]are true except for which one?
*August 5, 2012*

**chemistry**

with the exception of the transition elements, Groups3-12 in the periodic Table, and the noble gases, Group 18, atomic radii___ within periods, while atomic radii___ within groups.
*August 5, 2012*

**chemistry**

if a small piece of sodium is dropped into water,it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na(s)+2H2O(l) 2NaOH(aq)+H2(g),the sodium hydroxide that is formed is a..
*August 5, 2012*

**Math**

find the value of the expression 3*45 divide 9-2 (10-6) -4 divide 2
*July 3, 2012*

**Mathmatic**

7+7.9 add
*June 24, 2012*

**SCI -241**

I having problems understanding food labels assignment
*June 15, 2012*

**language**

what is bssmyale unscramble
*June 10, 2012*

**Finance**

How long will it take you to accumulate $10,000 if you save $250 a month starting next month? Assume you can earn an APR of 2.4% on your savings.
*May 14, 2012*

**health**

Your health care organization has called upon you to lead a work team to identify service-quality problems within the environment. Individual Portion Answer the following questions about work teams: What are the benefits of a strong work team? What are the common problems that...
*May 6, 2012*

**health**

Your health care organization has called upon you to lead a work team to identify service-quality problems within the environment. Individual Portion Answer the following questions about work teams: What are the benefits of a strong work team? What are the common problems that...
*May 6, 2012*

**Chemistry**

Thank you. You have been so helpful. I appreciate it. Deb
*April 30, 2012*

**Chemistry**

Dr. Bob, thank you kindly. Do you know if copper sulfate is considered an mm solution? Thanks. Deb
*April 30, 2012*

**Chemistry**

Dr. Bob, thanks for answering. What does w/w and w/v and soln mean? i am an a student in chemistry but am having difficulty with this piece. Deb
*April 30, 2012*

**Chemistry **

How do you prepare 2% Cu S04? How does this solution differ from 2M CuS04? I am stumped. Thank you. Deb
*April 30, 2012*

**government**

Describe one or two ways in which the US government subsidies might affect the rate of production for petroleum within the US. Should the US use tax dollars to increase subsidies and thereby encourage more oil exploration and petroleum production associated with new drilling ...
*April 24, 2012*

**Science**

A boat is moving east at 50 km/ hr on a river that is going west at 7 km/hr. What is the velocity of the boat.
*April 12, 2012*

**Chemistry 2**

calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O that could ...
*April 7, 2012*

**Chemistry 2**

Which is the oxidizing agent in the reaction below. Cr2O72- + 6S2O32- +14H+ > 2Cr3+ + 3S4O62- +7H20 A. Cr3+ B. S4O62- C. Cr2O62- D. S2O32- E. H+ I believe it's D or is it C not 100% sure please help. THANKS
*April 5, 2012*

**Chemistry 2 **

Which is reduced in the following reaction: Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
*April 5, 2012*

**Chemistry 2**

_________is reduced in the following reaction: Cr2O72-+6S2O32-+14H+>2Cr3+ + 3S4O62- + 7H20 A. H+ B. Cr6+ C. S4O62- D. S2+ E. O2- I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
*April 5, 2012*

**Chemistry**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find number of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2 HELP**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find number of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

left a line out of answer 1.546x10-2mols CuSO4x2=3.09x10-2 mole ions
*April 2, 2012*

**Chem 2**

Need help.... calculate the theorectical yield of the compounds to be prepared in the experiment. The metal ion in both cases is the limiting reagent.Find nuber of moles of Cu(II) in the sample of CuSO4 x 5H2O that you used. The equal the number of moles of [Cu(NH3)4]x H2O ...
*April 2, 2012*

**Chem 2**

Is this the correct formula for dichlorotetramminechromium (III) nitrate? (CrCl2(NH3)4 NO3)
*April 1, 2012*

**Chem 2**

Is this how I right this formula for dichlorodiaquoplatinum (II) (PtCl2(H2O)2)
*April 1, 2012*

**chemistry**

The oxyanion, CrO4 2- the chromate ion, is not in the solubility rules in our text. Examine your results from this lab and write a solubility rule CrO4 2-, the chromate ion. Cite experimental eidence to support your rule. This what our professor wants us to do.
*April 1, 2012*

**chemistry**

I need some help with making a solubility rule for CrO4 -2 for my chemistry homework.
*April 1, 2012*

**chemistry**

Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10–20, in 0.91 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ⇌ Cu(NH3)42+, K = 5.0 × 1013. Round your answer to two significant figures and do NOT use scientific notation.
*March 31, 2012*

**Chem 2**

need to figure out how to calculate. the value of DeltaH for the reaction below is -72kj_____kj of heat are released when 1.0 mole of HBr is formed in this reaction. H2(g)*Br2(g)> 2HBr(g) I know the answer is 36 but need help
*March 30, 2012*

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