Friday
September 19, 2014

Posts by tina


Total # Posts: 987

statistics
Is it ever inappropriate to report the mean? If so, when?
April 4, 2011

math
find mass of 2.7 grams of aluminum if volume is 1 cubic meters
April 1, 2011

math
find mass of 2.7 grams of aluminum if mass is 1 cubic meters
April 1, 2011

ENG 121
what are some examples of similarities and differeces in working mothers vs stay at home mothers?
March 31, 2011

marketing
discuss the legal and ethical implications that could affect the marketing process with nutrition life cycle of school age children
March 29, 2011

Math
Sketch the graph of a function f that satisfies all the following conditions. (a) f(0)=0,f'=1 (b) f''(x)>0 for x<0, f''<0 for x>0
March 28, 2011

Math
Find the vertical and horizontal asymtotes of y=1/x^2+6x+9
March 28, 2011

Math ( calculas)
find the intervals on which the curve y=x/(x+1)^2 is concave upward or concave downward.
March 27, 2011

Math
Rchel has 14 red, 9 blue, and one yellow towel. In haw many ways can the towels be arranged if the towels of the same colour must be side by side?
March 23, 2011

chemistry
The electron in a hydrogen atom is excited and makes a transition from n=2 to n=7 a. calculate the energy of the photon absorbed in joules. b. calculate the wavelength of the photon in meters HOW DO I DO THIS?
March 21, 2011

Chem
what occurs during the reaction below 4Hcl+MnO2-->MnCl2+2H2O+Cl2 1.the manganese is reduced and its oxidation number changes from +4 to +2. 2.the manganese is oxidized and its oxidation number changes from +4 to +2. 3.the manganese is reduced and its oxidation number ...
March 20, 2011

Elements of Statistics
the world health organization's center of aids research is planning to write a report on aids infection among drug users all of the world. in a recent study conducted on 1,000,000 drug users, 52% indicated that they are using heroin on regular basis, 37% indicated that ...
March 19, 2011

Chemistry (organic)
compound x C29H48BrCl reacts with excess H2/pd to give C29H56BrCl. How many double bonds and how many rings are in X?
March 18, 2011

math
How do the 2000 and 20pyg cancel out...the first pyg is still there?
March 14, 2011

math
(Px – 20) (100 – 2 Px + Pyg) Differentiating with respect to P we get 100 – 4Px + Pyg + 40 = 0 I dont understand how this is calc... whenever I multiply through and take the deriv I get another answer. Do you first multiply Px through then 20??
March 14, 2011

chemistry
CH3C (triple bond) CH 1.BH3, THF ----> 2.H2O2, -OH ---> Na, NH3----> 1.Hg(OAc)2,H2O--->
March 11, 2011

8th grade honors english
How do I properly site sources on my research paper?
March 8, 2011

calculus
Consider the solid obtained by rotating the region bounded by the given curves about the x-axis. y = 9 - 9x^2 , y = 0 Find the volume V of this solid. Sketch the region, the solid, and a typical disk or washer. Any help or tips would be greatly appreciated; not sure how to ...
March 8, 2011

Math
There are two flavors; vanilla and chocolate.
March 6, 2011

Math
There are 256 students in this outstanding 7th grade class. How many scoops of ice cream would have to be used in each cone in order to make a different cone for each person?
March 6, 2011

math
The rule is to multiply by 1/4. 2 x 1/4 = 1/2 3 x 1/4 = 3/4 5/6 x 1/4 = 5/24 2/3 x 1/4 = 1/6
March 6, 2011

math
n = -4 or 4 (-4)^2-16=0 -4 x -4 = 16, so 16-16 = 0 or 4 x 4 = 16, so 16-16 = 0
March 6, 2011

psy
Learning the skills to achieve your financial long term goals will help you to be a more responsible adult.
March 4, 2011

English
In general, which skills, tasks, and academic areas tend to come more easily to you? Which require more focus and effort and present more of a challenge?
February 28, 2011

Physical Science
A stationary but moveable 450-kg cannon is fired and the 12-kg cannonball moves off to the right with a velocity of 20.0 m/s. What is the connon's velocity (both magnitude and direction) due to the kickback from the firing?
February 26, 2011

physical science
What numbers go where on the formula? I am sorry I just don't get it.
February 26, 2011

physical science
Two 5.0kg rocks are 0.20m apart. What is the magnitude of the gravitational attraction between the rocks?
February 26, 2011

Physical Science
If a 2.0kg object is initially moving with a speed of 10 m/s and a 6.0 N force were applied in the direction of the motion, what would be the acceleration?
February 26, 2011

Unix Shell script
Shell script Using "if" statement checks for a file called "student.txt" in the current directory. Removes (deletes) the file if it exist. This file will collect last name, first name, and grade for 5 people. Use a while loop to get the information (last ...
February 26, 2011

Unix Script
"Using "if" statement checks for a file called "student.txt" in the current directory. Removes (deletes) the file if it exist. This file will collect last name, first name, and grade for 5 people. Use a while loop to get the information (last name, ...
February 26, 2011

comsumer math
victoria has a total of twenty-four nickles and quarters. she has ten more quarters than nickles.how much money does she have?
February 24, 2011

Science
the water and waste materials we washed down toilets and sinks are called: A. pesticides B. sewage C. industrial chemicals D. fertilizer
February 22, 2011

Organic Chem
Is it possible to obtain pure (200- proof) ethanol using fractional distillation from a fermentation mixture that contains equal amounts of water and ethanol? why or why not?
February 22, 2011

Physics
A loudspeaker of mass 25.0 kg is suspended a distance of 1.00 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of 2.50 m . What is the tension in each of the cables?
February 20, 2011

accounting
debit accounts recievable for 9000 credit sales revenue 9000 debit cash 2500 credit accounts recievable 2500
February 16, 2011

Chemistry
which of the following is insoluble ? (1)calcium chloride (2)ammonium phosphate (3)barium sulfate (4)potassium chromate so its 3 ?
February 13, 2011

Chemistry
Draw the lewis dot structure showing what happens during the reaction Lithium and Chlorine produce Lithium Chloride. how do you draw this, please help .
February 13, 2011

chem
what happens when NaCl(s) is dissolved in water? (1)Cl-ions are attracted to the oxygen atoms of the water (2)Cl-ions are attracted to the hydrogen atoms of the water. (3)Na+ions are attracted to the hydrogen atoms of the water. (4)no attractions are involved; the crystal just...
February 13, 2011

algebre
a flower bed is the shape of a triangle with one side twice the length of the shortest side and the third side is 30 ft more than the shortest side. find the dimentions if the perimeter is 102 ft.
February 13, 2011

Chemistry
what happens when NaCl(s) is dissolved in water? (1)Cl-ions are attracted to the oxygen atoms of the water (2)Cl-ions are attracted to the hydrogen atoms of the water. (3)Na+ions are attracted to the hydrogen atoms of the water. (4)no attractions are involved; the crystal just...
February 13, 2011

Immediate accounting
debit cash 1600 credit prepaid rent 1600 after 1st month of rent is used up u have to expense it debit prepaid rent 400 credit rent expense 400
February 12, 2011

chemistry
how to convert 4.8x10^5 hL to ml?
February 7, 2011

Math 156
If a figure has two right angles, then it is a rectangle? I said that the figure is in not a rectangle if it has two right angles, because a rectangle has four right sides.
February 5, 2011

Bus Ops
Is the set up times relevant to the production time and how does it affect the due dates when using each rule?
February 5, 2011

Business
Which of the following is NOT an example of parallel structure? "Yoga can help you develop flexibility, reduce stress, and increase relaxation." "Learn how to analyze business audiences, improve your style, and edit thoroughly." "You are all encouraged...
February 2, 2011

HCS/335
so how can i strech that into 3 hundred words??
February 2, 2011

HCS/335
Are laws and regulations the problem or the solution in addressing ethical problems? Explain. What would be an alternative?
February 2, 2011

fractions
what is 2/3 of 180/3
February 1, 2011

finance
A work at home oppurtunity is available in which you will receive 3 % of sales for customers you refer.The franchise fee is $ 840.00.How much will your customers have to buy to cover the cost?
January 31, 2011

finance
Richard likes the car price of $10,000 but financing through the dealer is no bargain.He has $2,000 for a down payment,so he needs $8,000 for the loan.Richard borrows $8000 for a period of four years at an add on intrest rate of 11 %.What is the total intrest on the loan?What ...
January 31, 2011

finance
a $200 cash advance by using checks linked to to her credit card account.The bank charges a 2 % cash advance fee on the amount borrowed and offers no grace period on cah advances.Sidney paid the balance in full when the bill arrived.What was the cash advance fee? What was the ...
January 31, 2011

finance
what is the interest and cost on a 6 month loan of $1,500 at13.2% simple annual intrest
January 30, 2011

physics
A body is dropped from a height of 10 meters on Earth and hits the ground with a certain velocity. The body is then taken to the moon, which has a gravitational constant that is 1/6th the value as compared to Earth. It is dropped from the same height, hitting the ground with a...
January 25, 2011

organic chemistry
What volume of physiological saline solution (90% by weight NaCl, in water) would give you a gram of salt when evaporated?
January 23, 2011

chemistry
How to draw a lewis Dot structure for LiCl
January 18, 2011

Art Appreciation
How you feel the form of the sculptures expresses the content. And what is visual elements and principles design
January 14, 2011

Human Service
Generate a list of helpful and unhelpful responses that you personally have experienced in specfic situations- (give examples) give list of unhelpful behaviors and helpful behaviors.
January 14, 2011

Science
I have already tried.
January 12, 2011

Science
Food web of Baltimore Checkerspot butterfly. MUST NEED HELP ASAP.
January 12, 2011

Science
Different species of plants have structure/characteristics that allow them to adapt to their environment. What is this called
January 11, 2011

psy 210
examples of statistical graphs from any Internet source. Copy and paste these into your discussion response, and then explain how it is set up to give an impression that leads the reader to agree with the subject’s conclusion. Then, suggest an alternate presentation of ...
January 10, 2011

MATH 12 HELP!!
a pizza store offers 15 different toppings on its pizzas. what is the probability that 4 randomly selected toppings will include salami and green pepper?
January 9, 2011

MATH 12
two cards are drawn without replacement from a shuffled deck of 52 cards. determine the probability of each event: a) the first card is a heart and the second is the queen of hearts b) the first card is the queen of hearts and the second is a heart
January 9, 2011

Physics
I know how to do displacement, I just get confused by the directions. I walk 6 blocks east and 5 blocks north-I come up with 7.8 because I squared 6 + squared 5 and took the square root of 61 but do I say the final displacement is 7.8 blocks east of north or 7.8 blocks north ...
January 5, 2011

Chemistry
what is the total number of moles in 80.0 grams of C2H5Cl (gram-formula mass=64.5grams/mole)? (1)0.806 (2)1.24 (3)2.48 (4)5.16 please help !
January 3, 2011

geometry
Find the approximate perimeter of triangle abc with vertices a(0,8 b(6,-2 c(-4,4
December 28, 2010

Communications
Techniques for Creating Behavior Change in a Staff Member
December 16, 2010

algebra
D. to solve for x: Since y= 2x you would plug in the 2x where the y is making it 2x=-x +3. Then add an x to both sides to get all the x's on one side of the equation. So it would then look like 3x=3. Divide both sides by 3 to get the x alone and you now have x=1 then to ...
December 15, 2010

college
What are the pros and cons of matching clients and clinicians in terms of gender, ethnicity, disability, sexual orientation, or language? Does matching people along those lines ensure common experience and easy bonding?
December 9, 2010

Teachers aide
Test 02604400
December 8, 2010

science
thanks this also helps one no the probability of his or her chances or risks factors for getting the same disease (s)
December 8, 2010

science
why is it important to know your family medical history
December 8, 2010

math
A rectangular skating rink measuring 30m by 20m is doubled in area by adding a strip at one end of the rink and a strip fo the same width along one side of the rink. Find the width of the strips if the enlarged rink is still rectangular.
December 5, 2010

bonar law
Colonel Harry a. Froboess of Switzerland jumped upward and outward from a windonw of a blimp and landed in a body of water on June 22, 1936. His jump was 120m, about the height of a 40-storey building. The path of his jump can be represented by the quadratic relationship h = ...
December 5, 2010

Chemistry
Hydrogen bonding is strongest between molecules of (1)H2S (2)H20 (3)H2Se (4)H2Te
December 2, 2010

4th grade
CHIEF OR RULER OF A NARRAGANSETT TERRITORY
November 30, 2010

Pen Foster Child Care
the staff
November 28, 2010

Calculus
Find the critical numbers of the function on the interval 0 ≤ θ < 2π. Small & large value f(θ) = 2cos(θ) + (sin(θ))^2
November 26, 2010

wor wic
is 3.5% more than 54%
November 24, 2010

UOP
The final project for HSM 240 is a 1,750- to 2,100-word proposal paper on a social program that you create. Pretend that you have the power and capacity to create an agency or organization and decide to create a new social program. You need funding and decide to write to a ...
November 21, 2010

Chemisty
Describe how you would prepare 250 ml of a 0.10M NaCl solution?
November 17, 2010

algebra
what did the baby porcupine say when it backed into a cactus?
November 16, 2010

algebra
what is the perimter of a rectangle. the length is 6 more than the width and the perimeter is 44
November 10, 2010

Physics
I have a question. 2.7104 was that suppose to actually be 2.7*10^4?
November 4, 2010

computer science
what is the cost(most expensive,expensive or less costly)performance(powerful, most powerful or average)reliability(highly reliable or less reliable) size(large, medium or small)and installed in numbers(few, many or large) of super compters, mainframe computers, personal ...
November 4, 2010

spanish 6th grade
What is your favorite food
November 1, 2010

trigonometry
2 cos^2=1 [0, 2pi)
October 30, 2010

math
in the diagram, lime m is parallel to line p, line t is a transversal, m<a = 3xt12, and m,b =2xt13. find the value of x. thanks !-
October 28, 2010

BIOLOGY ( please Help me)
In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated that green leaf tissue ...
October 27, 2010

BIOLOGY( please help me)
Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive reducing ...
October 27, 2010

biology
In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated that green leaf tissue ...
October 27, 2010

biology
In both lecture and lab, the significance of water (H2O), molecular oxygen (O2), and carbon dioxide (CO2) has been emphasized with regard to their energy content or participation in metabolic oxidation and reduction reactions. This lab has demonstrated that green leaf tissue ...
October 27, 2010

Biology
please help me
October 27, 2010

Biology
Oxidized (blue) DPIP becomes colorless when it is reduced – that is, when it receives electrons. A diagram of the photosynthetic light reaction shows that water molecules are the source of these electrons. How is it that the DPIP was only able to receive reducing ...
October 27, 2010

english
edith for spelling and punctuation? its a good idea to put the matches into a waterproof case before you put them into your pack?
October 19, 2010

english
cub scout is to eagle scout as rookie is to
October 19, 2010

math
8y-(2y-3)=9
October 18, 2010

math
standard deviation is 16.58312. the variance is 275
October 18, 2010

statistics
0.95
October 15, 2010

physics
as a hiker descends a hill, the work done by gravity on the hiker is a.) positive and depends on the path taken b.) negative and depends on the path taken c) positive and indepedent of the path taken d.)negative and independent of the path taken
October 11, 2010

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