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August 31, 2014

Posts by MAry


Total # Posts: 3,238

Math
I got B 4.545
July 14, 2012

Math
Divide: 100/22 = A. 5.011 B. 4.545 C. 4.98 D. 4.345
July 14, 2012

Math
Convert the mixed number, 1 3/4 , to a fraction. Reduce fraction if necessary. A. 4/12 B. 4/7 C. 7/4 D. 12/4
July 14, 2012

Math
Thank you Bob :)
July 14, 2012

Math
What is the volume of a cylinder with the following dimensions: Radius 6ft Height 24ft A. 33.14 ft3 B. 2712.96 ft2 C. 2712.96 ft3 D. 33.14 ft2
July 14, 2012

Math
Reduce the fraction 20/100. A. 4/20 B. 2/20 C. 1/5 D. 5
July 14, 2012

Case Study
Gladys strengths includes her desire to see help concerning the spousal abuse she receives at the hands of her husband and the fear she has for her children
July 2, 2012

intermeidate algebra
solve using elimination method -3x+4y=1, -6x+6y=-3
June 29, 2012

Algebra
2a+3b-c+(a-b-c)-(2a-4b+3c)
June 28, 2012

physics
1. A yacht is tacking into the wind on a zigzag path. On the rst leg of the course, the yacht has a displacement of 12 km at 840 north of east. After a second leg has been completed, the yacht's resultant displacement is 10 miles at 230 west of south. Determine the ...
June 27, 2012

Math
find the perimeter and area of a right triangle if the shortest side is 9 inches and the longest side is 41 inches
June 26, 2012

math
A recreation room has the following dimensions. Carpeting will cost $1.50 per square foot. How many square feet of carpet will be needed and how much will it cost?15 ft, 33 ft, 12 ft, 12 ft.
June 26, 2012

chemistry
Titration of 50.00 mL of 0.0521 M sodium oxalate, Na2C2O4, required 38.71 mL of a potassium permanganate solution: 5 C2O42- + 2MnO4- + 16H+ = 2Mn2+ + 10 CO2 + 8H2O Calculate the molarity of the potassium permanganate solution.
June 23, 2012

chemistry
A 0.8378 g sample of calcium oxalate is heated to 1000oC, CaC2O4 = CaO + CO + CO2 Calculate (a) the moles of CaO remaining after ignition (b) the mmoles of CO evolved (c) the weight of CO2 produced.
June 23, 2012

chemistry HELP!
How much of a 0.10 M H2SO4 solution is required to neutralise 1g of NaOH? Express your answer in cm3.
June 23, 2012

math
how do you do 16.1 divided by .023 ?
June 20, 2012

social studies
Between 1935 and 1957, a period that included World War II, the birth rate rose from 16.9 to 25 per 1000 people. What was the most likely cause of this "baby boom?" A) the change in view toward artificial birth control methods B) the return of young American soldiers...
June 18, 2012

Algebr 1B
Simplify if possible x^2+17x/x^2-9x+x^2-10x/x^2-9x
June 10, 2012

literature
In the call of the wild,what did Buck dream about by the campfire?
June 6, 2012

Math
I know that 35 divided by 7 equals 5, knowing this how does it help me to find 42 divided by 7? Explain
June 5, 2012

Math
I know the answer I just need to know how to explain it!
June 5, 2012

Math
How could knowing that 35 divided by 7 equals 5 help me find 42 divided by 7?
June 5, 2012

Chemistry
A sample of methane gas at room temperature has a pressure of 1.50 atm and a volumne of 10.5 L. If the temperature is kept constant, what will be the new volume if the pressure is increased to 2.00 atm?
June 3, 2012

Chemistry
a basketgball is inflated to a pressure of 1,50 atm in a 20.c garage. What is the pressure of the basketball outside whre the temperature is -5.00 C?
June 3, 2012

fractions
I need a fraction example using 1024 x 768. It is for building a web page. So I guess the fractions would be 1024/1 x 768/1 .Any help would be great. The 1024 and 768 is what size monitor the screen is
May 31, 2012

world geography
japan
May 30, 2012

10th grade chemistry
What is the oxidizing agent during discharge
May 29, 2012

algebra
Add 12/5 and 8/13. Fractions show how it is done please.
May 28, 2012

methods and analysis of quantitative research
The graduate selection committee wants to select the top 10% of applicants. On a standardized test with a mean of 500 and a standard deviation of 100, what would be the cutoff score for selecting the top 10% of applicants, assuming that the standardized test is normally ...
May 26, 2012

Physics
Two cubic blocks are in contact, resting on a frictionless horizontal surface. The block on the left has a mass of mL = 6.70 kg, and the block on the right has a mass of mR = 18.4 kg. A force of magnitude 112 N is applied to the left face of the left block, toward the right ...
May 25, 2012

writing
how could bad therapeutic communication affects a patients outcome?
May 24, 2012

Reimbursement Methodologies
Your're a coder who's reviewing the record of a 62-year-old woman who was admitted to the hospital with shorness of breath and minor ches pain. The doctor diagnosed the patient with Staphylococcus aureus pneumonia and you assigned a code of 482.41. Additionally, you ...
May 21, 2012

Statistics
A researcher found a sample proportion of 0.94 for estimating the population proportion of freshmen at a university who had Facebook accounts. If the standard deviation of the sampling distribution of the sampling proportion is 0.02, what is a 95% confidence interval for the ...
May 18, 2012

Statistics
From random sample of 200 college students, 40 students indicated that they smoke cigarettes. Use the information from the sample to calculate a 95% confidence interval for the population proportion of college students that smoke cigarettes (round to nearest hundredth). A. (0....
May 18, 2012

Statistics
1000 scientists create 95% confidence intervals for parameters of interest. If they all compute the confidence intervals correctly, how many of the intervals would we expect to contain the true population parameter? A. 950 B. 0 C. 95 D. 1000
May 18, 2012

Statistics
Which of the following statements best describes the uncertainty associated with a 95% confidence interval for a population proportion, computed from a simple random sample? A. We don't know whether the particular confidence interval is successful or not, but 95% of ...
May 18, 2012

Statistics
A Gallup Poll reported the percentage of Americans who approve of the President's job performance was 47% with a margin of error of 2 percentage points. What is a 95% confidence interval for the population percentage? A. 41% to 53% B. 45% to 49% C. 46% to 48% D. 43% to 51%
May 18, 2012

Statistics
In a poll of 1,000 adults, 57% believed that there was too much inappropriate content on TV. A 95% confidence interval for the proportion is given as 0.54 to 0.60. What is the margin of error of this poll? A. 0.54 B. 0.015 C 0.03 D. 0.57
May 18, 2012

Math equation
I have no idea how to solve this. f(x)=3x-4 a) f(10) b) f (-2) c) f (0) d) (b)
May 17, 2012

Human Services
develop at least one process evaluation measure and at least one outcome evaluation measure that you suggest for the Consultation and Education department at Greenby Community Mental Health Center to display the program’s effectiveness and efficiency.What issues and ...
May 15, 2012

Math
Sales tax on nonfoor items is 7%. Which equaation shows relationship of the price of item p to the total cost c? p=1.07c c=1.07p p=7c c=7p Why is this the correct one?
May 9, 2012

Physics
A flywheel of a radius .5 m starts from rest and under goes a uniform angular acceleration of 3 rad/sec2 for a period of 5 seconds. Find the angular velocity of the flywheel at the end of this time? Find the angular displacement (in radians) that the wheel turns through during...
May 9, 2012

math
A=1/2bh=1/2 (b)(b+4) 22.5=1/2 (b2+4b) 45=b2+4b b2+4b-45=0 (b-5)(b+9)=0 b-5=0 b=5 h=b+4=5+4=9
May 9, 2012

HUM111
How do you think you can be best prepared and ensure a successful outcome when interviewing someone?
May 7, 2012

Math
A box contains 4 red cubes, 3 blue cubes, 2 green cubes, and 1 yellow cube. You pick two cubes at random, replacing each after you pick. Find the probability of each compound event.
May 2, 2012

Math
The dividend is 5600. The divisor and the quotient have a difference of 10. Write the division sentence
May 1, 2012

phi 103
false
April 30, 2012

algebra
It took a contractor 1285 hours to manufacture their first unit of an item. If the contractor expects to acheive a 92% unit learning curve, how many hours would be required to manufacture units 51-100/
April 27, 2012

history
by 1910, why had public-school enrollment reach a record high a. increased funding for scholarships b. improved conditions in the school c. higher family incomes d. passage of laws requiring attendance
April 26, 2012

Trigonometry
Do I have to solve the right side of the equation first or bring it over to the left side?
April 25, 2012

Trigonometry
Fine the complete exact value of sin x = -sqrt3/2. I'm very lost as to how to even begin this problem.
April 25, 2012

computers
powerpoint presentation assignment how will i explore the role that family and society play in the development of the individual's sense of self.
April 23, 2012

History
The roots of the Iranian hostage crisis resided in: 1. Jimmy Carter’s emphasis on human rights. 2.the Shah of Iran’s despotic regime. 3.economic inflation in the United States. 4. America’s isolationist stance in foreign affairs. I think it's either 3 or 4??
April 23, 2012

Statics
A solid, round simply supported steel shaft has a diameter of 25mm and span length of 500mm. The shaft supports a concentrated load of 3kN at midspan. Calculate the maximum deflection of the shaft.
April 23, 2012

Statics
An aluminum wire has a diameter of d in. Determine the minimum diameter D of the coil in which the wire can be wound without exceeding a bending stress of 30,000psi
April 23, 2012

Algebra 2
The angular speed of a larger pulley wheel (radius=15cm) is 50 rev./min. Find the angular speed of the smaller wheel (radius=6cm).
April 22, 2012

geometry
the volume of a cylinder is 88 m. If the radius of the cylinder is quadrupled, what will be the volume of the new cylinder in cubic meters?
April 22, 2012

Chemistry
ÄH is enthalpy
April 21, 2012

Chemistry
What is the ÄH of CF4 (carbon tetraflouride)? What is the ÄH of HF (hydrogen flouride)? Lastly, what is the ÄH of C2H4 (ethane gas)? Please help.
April 21, 2012

probability
48
April 21, 2012

probability
of the 2598960 different 5 card hands possible from a deck of 52 playing cards, how many would contain all 4 tens?
April 21, 2012

statistics
yes thank you
April 20, 2012

statistics
Using the Chi-square test I am having problems when I get to the part of adding the the fractions and getting the percent that must be rounded to three decimal places. I have looked in the text and searched the internet. Can you please me
April 20, 2012

Math
The answer is some number
April 16, 2012

physics
a helicopter is ascending vertically with a speed of 5.20 m/s. at a height of 110 m above the Earth, a package is dropped from a window. how much time does it take for the package to reach the ground ? (hint: v0 for the package equals the speed of the helicopter).
April 15, 2012

math
Please explain in detail how to solve this problem: h = -16t^2 + 156t + 105
April 14, 2012

math
Please explain to work this: A rocket is launched from atop a 105-foot cliff with an initial velocity of 156ft/s. the height of the rocket above the ground at time t is given by h= -16t^2 + 156t + 105. When will the rocket hit the ground after it is launched? Round to the ...
April 13, 2012

Stats
A study of the students taking distance learning courses at a university finds that they are mostly older students not living in the university town. Choose a distance learning student at random. Let A be the event that the student is 25 years old or older and B the event that...
April 10, 2012

Physics
Thank you so much, Elena!
April 9, 2012

Physics
A large solid cylinder rolls without slipping down a 40 m long hill with a 30 degree slope. The cylinder then rolls a short distance over level ground and then off a 20 meter high sheer cliff. How far from the base of the cliff does the cylinder land? Ignore friction and air ...
April 9, 2012

p
A roller coater has a first drop of 140 meters and then enters a circular loop. Find the maximum radius of the loop such that the coaster never leaves the track at the top of the loop. Using the radius found in part 1, calculate the largest centripetal acceleration experienced...
April 9, 2012

Physics
A pool ball initially traveling 5 m/s strikes a second pool ball of identical mass in a totally elastic collision. After the collision the first ball has veered off its original path and is now traveling at 3 m/s. Find the speed and angle of each pool ball after the collision...
April 9, 2012

Physics
A bullet mass 10 g strikes a log with a mass of 25 g suspended from a 3 meter long string. The bullet lodges in the log which swings up through an angle of 30 degrees. Find the speed of the bullet just before it hit the log.
April 9, 2012

algebra
the population of a city is expected to triple every 25 years . when can the city planners expect the present population of 180 persons to double?
April 4, 2012

government
This one i am stuck between A and B i need help. Which correctly lists the three factors of production in a capitalist economy? A. land, labor, and a laissez-faire economy B. socialism, labor, and capital C. land, labor, and capital D. land, capital, and monopoly
April 2, 2012

Math
Find y^1 for the relation 2 sin (x^2y)-5x^3=3y^2. Please explain so I can work similar problems.
April 2, 2012

Math
Find the points at which the relation 3x^2-2xy+y^2=24 has a vertical or horizontal tangent line.
April 2, 2012

Math
Find two lines passing through (-1, 1)which are tangent to the ellipse x^2-4x+y^2+3=0. Please write out how to get there. Thank You.
April 2, 2012

Chemistry help please
i need some help understanding this problem please. How many moles of O are there in 32.4g N2O5, how many oxygen and nitrogen atoms are there in the 32.4g?
March 31, 2012

Chemistry
How many moles of O are there in 32.4g N2O5, how many oxygen and nitrogen atoms are there in the 32.4g?
March 31, 2012

AP Science
A 2 N and 6 N force pull on an object to the right and a 4 N force pulls to the left a 0.5 kg object. What is the net force on the object? Is the answer 4N to the right
March 28, 2012

Science
How do these rank in momentum 1 being least and the most 5 Fast car, stopped truck, slow car, Fast baseball, Fast feather I have 1. Stopped truck
March 28, 2012

Science
A 2 N and 6 N force pull on an object to the right and a 4 N force pulls to the left a 0.5 kg object. What is the net force on the object?
March 28, 2012

science
if a person is pushing a cart with a force of 40 newtons and it accelerates at 0.5 m/s2 what is the mass of the cart
March 28, 2012

biology 2 ap
b. transfer energy with ATP
March 28, 2012

math
what is the lateral surface area of a right hexagonal prism whose base is a regular hexagon with sides measuring 8 incheslong and altitude measuring 6 inches tall
March 27, 2012

math
find the lateral surface area of a right triangular prism if its altitude is five inches and its base is an isoceles right triangle with hypotenuse of length 10 inches
March 27, 2012

Chemistry Help!!!
I seriously dont understand this...i cant even begin to think of what to do please help... How many moles of Ba(OH)2 does it take to neutralize 2.5 moles of HNO3?
March 26, 2012

statistics
(Quiz 240 ) Stratified Sampling: The owner of a private food store is concerned about employee morale. She decides to survey the mangers and hourly employees to see if she can learn about work environment and job satisfaction. From the list of workers at the store, obtain a ...
March 26, 2012

Chemistry help please
What is the pH of a solution whose hydronium ion concentration is 0.0010 M?
March 26, 2012

Chemistry help please
What is the pH of a solution whose hydronium ion concentration is 0.0010 M?
March 26, 2012

Chemistry Help Please
What is the OH- concentration of a solution that has a pH of 9.66?
March 26, 2012

Chemistry
never mind u have already responded thanks I was right the first time.
March 25, 2012

Chemistry
DrBob22 please help with the pH. I am not sure if I would use pKa=-logKa=-log(1.9*^-5)=4.74 or do I use [H3O]= 10^-pH =.0040=10*^-ph
March 25, 2012

Chemistry
I too am trying to understand. So far I have figured this but do not know if correct. Acidity constant=Ka=[A^-][H3O]/[HA] A^-= [CH3OO^-]=0.0040M [H3O]=0.0040 [HA]=0.8537 So plug them in and you get 1.8*10^-5 im lost at the pH value help with that please.
March 25, 2012

Algebra 2
The concentration of hydrogen ions in a batch of homemade ketchup is 10-4,. What is the pH level of the ketchup?
March 25, 2012

history
During a remarkable period of change from roughly 1865 to the early 20th century, the great cities that we know and love today expanded at an incredibly rapid pace and went through a fundamental transformation in composition and construction. Select one of the ways that the ...
March 24, 2012

College Physic
2) A car traveling with 5 m/s encounters a deer. The drivers slams on the breaks, the breaks lock. The car skids to a complete stop on the road ahead (and the deer runs away). Why does the car stop (where does all the kinetic energy it had go)? Find the magnitude of the ...
March 23, 2012

double integrals
Combine the following two integrals into one by sketching the region, then switching the order of integration. (sketch the region) im gonna use the S for integral sign..lol SS6ycos(x^3-3x)dxdy+SS6ycos(x^3-3x) And the first integration limits for x are between -1 and y, for y ...
March 21, 2012

Math
28,487.32 is the answer, Sorry.
March 20, 2012

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