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Posts by shannon

Total # Posts: 536

Math
If P(B)=1/5 compute P(not B)? So I am thinking it may be P(not B)=0.2? Is this right?

Math
Ok so it would be P(B)=0.8, the probability that the grade is not a B.? I hope this is right now, if it isn't I give up....lol !

Math
Oh ok I think I get it, so P(B)=0.5, 1/2, and P(not B)=0.5,1/2??? Is that right?

Math
If a grade was drawn at random from the data shown below, what is the probability that the grade is not a B? Grade Frequency A 2 B 8 C 11 D 2 F 1 I think it is 1 out of 5 or 4 but I am not sure? Please help :) Thank you much!

math
a country has 221 mobile cellular telephones per 250 inhabitants. if the country's population is about 2,800 how many mobile cellular telephones does the country have? in your own words, using complete sentences solve the problem

math
Thanks, L. I know - the "why" is a bit tricky, especially for 5th graders, and my daughter is well ahead of grade level. I think your answer will probably work well enough.

math
We figured that part out. The girl was given $3.58 in change. Why was the error made (this is part of the original question).

math
Hanna bought 4 pencils for $.09/each, two notebooks for $1.58 each, and one pack of paper for $3.17 each. She paid with $10 and got $3.58 in change. Is this amount correct, and if not, why? Just need the WHY part of the answer. The correct change should be $3.31

child care
which of the following is an obstacle to learning for a begininning mover? A.knowledge of what elements of the movement to focus on B.chronic indifference characteristics between birth and age three C.shorter time to monitor perceptual input from the visual system D.difficult ...

child care
which of the following is an obstacle to learning for a begininning mover?

6th grade
how do u change a ratio into a percent

Confidentiality in Allied Health Essay
Writeteacher can you delete this whole questions please. I will find all the information on my own thanks and have a good day!!

Confidentiality in Allied Health Essay
Can anyone help me find other resources to the graded project for Penn Foster? I have the AMA, and the Peen foster books. Anything else would be great.

Algebra
Thank You!

Algebra
Find the equation of a line parallel to the line y=3/4x-5?? I am not sure how to do this problem, can someone Please help :) Thank You in advance!

Chemistry
a certain brand of laundry aid called "Oxydoodle" is 12.5% (w/w) sodium percarbonate and 87.5% (w/w) sodium carbonate. Calculate the % (w/w) h2o2 in Oxydoodle

math
A car radiator has a 6-liter capacity. If the liquid in the radiators 40% antifreeze, how much liquid must be replaced with pure anitfreeze to bring the mixture up to a 50% solutions? If I told you the answer is 1 liter, in your own words, using complete sentences explain how ...

algebra 1
What is value of x? What are you suppose to do with problem.

business ethics
Thanks for your response. I do not want you to do the homework for me. I guess I need a starting poing.

business ethics
CONFLICT OF INTEREST Big Company is a large manufacturer of health-care products that is under fire from the government to lower costs. Big Company has an excellent reputation and is widely acknowledged as one of the best managed companies in the country. In spite of its ...

business information systems
Are the alternative methods and tools: agile development, end-user development, and component-based development. I'm unsure how they differ from SDLC. Can you help me with this.

business information systems
list the alternative methods and tools for system development. How do they differ from SDLC?

Physics
Starting from rest, a 98-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 720 N, and his speed at the bottom of the pole is 3.8 m/s. How far did he slide down the pole?

MATH
A rectangular prism has a volume of 6,090 cm3, a width of 14 cm, and a length of 15 cm. What is the height of the rectangular prism?

4th grade
SIXTY SEVEN HUNDRED

HUM/205
What is the role of an artist?

math
the problem is 15x(7-7)+(5x2)= i got the answer 10 but im not sure what order i should do the operations in to get my answer? Help?

Geometry
Triangle FGH has the following side lengths: FG = 5 ft, GH = 10 ft, HF = 12 ft Triangle PQR is similar to triangle FGH. The longest side of triangle PQR, RP = 7.2 ft.

Physics
7 m/s

Medical English essay
Debby, Can you tell me were you got all your infromation for this essay?? I have to do the sameone and I am coming up empty handed.

chemistry 110
what combinations of Zn, Al, ZnSO4 and Al2(SO4)3 would you make to illustrate that Zn is less active than Al?

chemistry
write chemical equations for the reactions when you put each Al, Fe, Cu in 0.5M Al2(SO4)3

chemistry
Zn is less active than Mg. Write the equations describing what occurs when ou mix: a)Zn with 0.5M magnesium chloride, MgCl2 b)Mg with 0.5M ZnCl2

elementary
1.)Measurement of a television if it is approx. 18.5 inches high and just over 26 inches wide, How should the size be advertised in a store, rounding to the nearest whole number? 2.)A TV store owner wanted to make a shelf to display television sets. How long should he make the...

Science
What is an area without pressure called?

Physics
ok and if i have more then two distances then do i add all 3 then divide??

Physics
A person walks 8.4522x10^1 m East, then turns around and walks 7.8409x10^1 m West. The total time to walk this distance was 8.7343x10^2 s. What is the speed of the walker, expressed to 3 significant figures?

Physics
In 1998, NASA launched DS-1 (Deep Space 1). This spacecraft successfully flew by the asteroid 1992 KD. The propulsion system worked by ejecting argon ions at high speed. The propulsion system could increase the velocity by 7.2284x10^0 m/s per day. What was the average ...

Physics
In 1998, NASA launched DS-1 (Deep Space 1). This spacecraft successfully flew by the asteroid 1992 KD. The propulsion system worked by ejecting argon ions at high speed. The propulsion system could increase the velocity by 7.2284x10^0 m/s per day. What was the average ...

Math
An experiment has three possible outcomes: A,B, and, C. If P(A)=P(B) and P(C)=2P(A)what is the probability of each event? Hint: We know that in this case, P(A)+ P(B)+P(C)=1; therefore,P(A)+P(A)+2P(A)=1 Please Help :)

chemistry
when a student removed the crucible cover afer the first strong heating in creating magnesium oxide, some of the white was knocked from the cover to the floor and was lost. did this loss cause the calculated number of moles of oxygen in the compound to be too high or too low?

9th grade
The islamic ...and Arabic ... held the empire together

economics
What is one kind of monopol that the U.S. government generally permits?

vocabulary
i need to put outwit in a sentence

algebra
Solve by the elimination method: 0.3x-0.2y=4 0.4x+0.5y= -29/19 (fraction)?? Please Help I do not understand Algebra!!

geology 101
how do fossils help in determining the relative age of strata? Are the three different localities around the same relative age? Explain your response

math
name three numbers between 0.33 and 0.34

science
what is a control?

Math
$100 is deposited in a savings account that pays 4% interest compounded annually. A) how much is in the account after 5 years? B) use logarithms to determine how many years it will take for the account to grow to $1000. Could someone show me how to do this step by step? Thank you

Math Word Problem
The area of a rectangle is 99 ft2 , and the length of the rectangle is 7 ft more than twice the width. Find the dimensions of the rectangle.

Chemistry
Suppose you are given a sample of a homogeneous liquid. What would you do to determine whether it is a solution or a pure substance?

computer science
hi i'm taking compsci and I need someone to give me some examples of these classes, thanks! You will have to write a class to represent one of the following items. Note that each class must a proper constructor even though the constructor is not explicitly named. 1. a ...

calculus
p(x)=5x^3-4x^2+20-16 use synthetic division to show that x=2i is a zero of p(x)

chemistry
what type of intermolecular force describes the interaction between Ca2+ and Mg2+ with water? a. dipole-dipole b. hydrogen bonding c. ion-dipole d. London dispersion

chemistry
if you burned a marshmallow with a net mass of 0.8g and you heated 49.1 g of water from an initial temperature of 24C to a final temperature of 28C what is the heat energy per gram of marshmallow? (express your answer in J/g) a. 822 J/g b. 1027 J/g c. 4.184 J/g d. 7210 J/g

chemistry
the answer I got was 52.9... right??

chemistry
when a 0.4-g almond sample is burned the heat gained by the water is 7525.4 J and the temperature of the water increased from 24 C to 58 C what was the mass of the water in grams? a. 50 b. 100 c. 45 d. 52.9

nutritian
What is responsible for one food item to have higher energy content than another? a. lower fat content b. higher fat content c. lower carbohydrate content d. higher carbohydrate content

nutritian
what is responsible for one food item to have higher energy content than another? a. lower fat content b. higher fat content c. lower carbohydrate content d. higher carbohydrate content

chemistry
is the burning of a marshmallow a(n) endothermic or exothermic process?

science
Create A 7- To 10-Slide Powerpoint® Presentation That Describes Environmental Benefits And Challenges Of Urbanization. In Your Own Words, Include Descriptions Of Two 1996 Award Winners, Discussing How They Overcame One Of The Challenges Mentioned In Your Presentation.".

science
Create A 7- To 10-Slide Powerpoint® Presentation That Describes Environmental Benefits And Challenges Of Urbanization. In Your Own Words, Include Descriptions Of Two 1996 Award Winners, Discussing How They Overcame One Of The Challenges Mentioned In Your Presentation.".

world liturature and language
Write a three-paragraph comparison between themes in Márquez's "Old Man" and Kafka's "The Metamorphosis".

8th grade
is a shortage of tyrosine the cause of albinism? can u explain the answer.

Microbiology
If a culture starts out with 1000 cells and after 8 hours there are 64000 cells, how many generations have occurred? A. 4 B. 32 C. 6 D. 64 E. impossible to determine

computers
Average typing speed for middle school

Penn Foster
X-rays or are diagnostic tools used to visualize internal organs

chemistry
How do I find n?

chemistry
What volume of O2 gas, measured at 297K, is needed to completely burn all the methane (CH4) in a 3.00L container at the same T and P?

chemistry
A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant? (89.0atm/0.09atm)*6.75=6,680 V2=6680 Is this right??

chemistry
how do I convert 17.4 cubic ft into liters?

chemistry
A gas that occupies a volume of 6.75L at 89.0atm will occupy what volume at 68.55mm Hg if the temperature remains constant?

chemistry
Thanks for your help DrBob but the equation given is the one my teacher gave us. I just balanced it and I am not sure where I went wrong. I understand how to do the rest of the problem. I just need help to balance the equation.

XACC 280 (accounting)
Did you find this..i need it also..

math
One year interest of $500 on an investment of $5000

Math
A tourist in Ireland wants to visit seven different cities. If the route is randomly selected, what is the probability that the tourist will visit the cities in alphabetical order?

statistics
A test given to a class reveals most did well but a few did poorly. what is the distribution of the test scores?

Math
judy and ramey together have 42 stuffed animals. judy has 12 fewer animals than ramey. how many stuffed animals does each girl have?

medical coding
The E/M codes are grouped by location or type of care and may have further subdivision, such as new patient and established patient visits. The layout of the code criteria is consistent with clarifications in a paragraph, the CPT code with description, the components required...

Health Physics
As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?

Health Physics
A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

Health Physics
A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to the amount of work done or the amount of ...

Health Physics
What type of machine are the joints of the human body?

Health Physics
The body can release 20,000 J of energy for each liter of oxygen consumed. How much oxygen must be consumed by the body to release the energy present in a typical 2000 Cal diet?

Health Physics
What is the name of the company that all "good" machines are made of?

Health Physics
As a result of doing work, a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and delivers 900 J of energy in 14 seconds to some object. What is the efficiency of this machine?

Health Physics
The body can release 20,000 J of energy for each liter of oxygen consumed. How much oxygen must be consumed by the body to release the energy present in a typical 2000 Cal diet?

Health Physics
What is the purpose of the metabolic process(combustion process)?

Health Physics
What type of machine are the joints of the human body?

Health Physics
What must a muscle do in order to work?

Health Physics
A machine is used to either do work or to convert energy. To find the efficiency of a machine, one must compare the power input to the machine to the power output of the machine. What does thepower take into account in addition to the amount of work done or the amount of ...

Health Physics
A particular machine has "mechanical disadvantage". What is the purpose of using such a machine?

Health Physics
Why is the property of energy so important in nature?

Health Physics
When work is done by friction, in what form in energy "lost"?

Health Physics
As one exhales, what change in energy takes place between the diaphragm and the air in the lungs?

Health Physics
As the shape of the diaphragm is changed dueing respiration, what does it possess?

Health Physics
As the muscles attatched to the diaphragm pull the diaphragm downward during respiration, what are the muscles doing?

Health Physics
As air moves into the lungs, what does the air possess?

Health Physics
The human body is 20-25 percent efficient. In what form is energy lost?

11th grade
How do you draw the Lewis Structure for SO4,SF6,NH3 and H2S

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