Posts by mark
Total # Posts: 1,765

9th grade algebra
two volumes one is 8 the other 125, the surface are is 4, what is the other surface area 
Math
make up alist of data with the following landmarks 15, 5,10,20 
Chemistry
When 2.50g of an unknown solute is dissolved in 40.0g of ethanol the solution boils at 79.4C. The normal boiling point of this substance is 78.4C and it has a kb of 1.22C/m. (a) What is the molality of this solution? (b) What is the molecular weight of the solute? 
Language
Which would be correct? They or Them and I are buying some groceries. Would it be They? 
statistics
what is the sample space for this experiment: select two cards from a deck of 52 cards and observe the color of each card drawn. 
java
I hava a Employee class and my main class. But in my netbeans it is saying that cannot find symbol symbol:class Employees location:class Main Why is this?And what should I do? Please send me a detail answer. I will really thankful for all of you. 
math
how do i design a portable barrier to stop a vehicle travelling at 60km/h, weighing 1800kg within a distance of 1m? the tires cannot be damaged. 
college algebra
Compute x +y, given the linear system with T # 1 and with the ordered pair (x,y) as solution x + 2y=3 Tx + ( T+1)y = T + 2 
math
You are forming 3 teams from 25 people. Team A has 8 Team B has 3 Team C has 14 How many ways can team A be selected? How many ways can team B selected from the remaining people? How many ways can team C be selected from the remaining people? How many ways can all teams be ... 
math
2 1/4 double 
College Chemistry
48.70 mL of an HCl stock solution was transferred into a 500 mL volumetric flask and filled to the mark. 47.67 mL of the diluted solution was titrated with 0.179 M NaOH and found to have the concentration of 0.885 M. What is the concentration of the stock solution? 
Geometry
The area of a triangle is 6.75 m squared. If the base of the triangle is 3 m, what is the height of the triangle? 
algebra
24.084 
Math
21% 
french, english
yah i do. I just don't understand it. can you explain??? 
french, english
this is a french fable that I translated but I don't really undersand it. It is called the lion and the hunter... A braggart, lover of hunting, Just lost a dog of good breed, He suspected the body of a lion, Saw a shepherd: "Teach me, please, My thief, he said, the ... 
Physics
A 0.2 kg object that stretches a spring 6.5 cm from its natural length when hanging at rest oscillates with an amplitude of 1.5 cm. The acceleration of gravity is 9.81 m/s2. Find the total energy of the system. 
U.S. History
Describe the policies of our government regarding immigration during the first 100 years of U.S. history. 
Math
Tina had no money until she received her pay from her boss. Afterward, she spent 7.50 dollars on food every day from Monday through friday. She spent 30 dollars on clothes and 25 dollars to repair her bike. If she had 40.50 left over what would be a expression to find the ... 
Math
Andy and Cathy run for class president. There were 598 votes but 36 of the votes were with drawn. How would I write an equation that could be use to find n the number of votes that represent a tie? 
Science
Does blood bring cell things like oxygen and digested food? 
Science
Does blood bring cell things like oxygen and digested food? 
Science
Does blood bring cell things like oxygen and digested food? 
Science
Does blood bring cell things like oxygen and digested food? 
AP Chemistry
You did not completely vaporize the liquid when you heated it. Is that incorrectly high, incorrectly low, or unaffected by the following procedural changes? 
physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2) and the surfaces are ... 
eng 155
i found in this order from top to bottom really, rapidly, slowly, firmly, badly, loudly, shamelessly, wildly, can't. and i think i am missing one, sorry if i am to late 
physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2) and the surfaces are ... 
Physics
Suppose I have a circular metal disk spinning at a constant angular velocity. Now imagine near to, but not in contact with the first disk, I have an identical metal disk spinning at the same angular velocity but in the opposite direction (ie. W1 = w2) and the surfaces are ... 
geometry
28 
Biology
During the cell cycle, when does mitosis occur? 
physics
Hurricanes can involve winds in excess of 120 km/h at the outer edge. Make a crude estimate of the energy of such a hurricane, approximating it as a rigidly rotating uniform cylinder of air (density 1.3 kg/m^3) of radius 120 km and height 4.5 km. Make a crude estimate of the ... 
PHYSICS HELP!
I keep getting 0.68 ????? 
math
Obtain the Taylor series in powers of x + 1 for f(x) = x/(2 + x), giving the general term and the interval of convergence. 
chem
5. The LC50 for fluorine is 0.29 mg/m3. What is this in ppm at 25 oC and 1 atm pressure? How does this compare to the PEL? 
math
try... value = low + ((high  low)(x%)) 
math
high=10 low=5 value=8 what is the formula to identify where 'value' is relative to the high and low (range) 
Chemistry
j 
chem
What is the structure of the addition polymer that results from polymerization of 2chloropropene. 
statistics
12 light bulbs are tested to see if they last as long as claimed. 3 of them fail. 2 light bulbs are selected at random without replacement. find the probablility that at least one of the 2 selected failed the test. 
health
home security 
chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for this recycling reaction. 
college physics
Let the radius of the circular segment be 108 m, the mass of the car 1861 kg, and the coefficient of the static friction between the road and the tire 0.9. The banking angle is not given. Find the magnitude of the normal force N which the road exerts on the car at the optimal... 
chem
Recycling of PET soft drink bottles involves heating with methanol and an acid catalyst to liberate ethylene glycol and dimethylterphthalate (methyl ester of pthalic acid). These can then be used as monomers to make new PET products. Write an equation for this recycling ... 
English
were? 
business
Which pair of accounts follows the rules of debit and credit, in relation to increases and decreases, in the same manner? A. Accounts Payable and Rent Expense B.Repair Expense and Notes Payable C.Prepaid Insurance and Advertising Expense D.Service Revenues and Equipment 
business
thank you 
business
Which measure would a longterm creditor be least interested in reviewing? a.free cash flow b.debt to total assets ratio c.current ratio d.solvency measure 
business
So its $5.00 dollars, thanks Ms. Sue 
business
Please please I need help with this question. thanks For 2010, Fielder Corporation reported net income of $30,000; net sales $400,000; and average share outstanding 6,000. There were no preferred stock dividends. What was the 2010 earnings per share? a.$4.66 b.$0.20 c.$66.67 d... 
business
thanks 
business
Distinguish between static budgets and flexible budgets. When are each an appropriate means of evaluating a manager’s performance and why? 
Calculus
ﬁnd the ﬁrst three nonzero terms of the Maclaurin expansion of y = f (x) where the function is deﬁned implicitly by x^2 + xy + y^2 = 1. Also estimate the error approximating f(0.1) using the ﬁrst two non–zero terms of this series. 
Physics
A model rocket is launched upward with an initial speed of 50 m/s. It accelerates with a net constant upward acceleration of 2.0 m/s^2 until its engines stop at an altitude of 150 m. (a) What is the maximum height reached by the rocket? (b) how long after the lifeoff does the... 
%
How do I find a dollar number plus 7.1% that will come close to $70.00 Here is what Im doing..I rent out packages that are $70.00 and I want to pay 7.1% sales tax out of that $70.00..What dollar amount do I use to add 7.1% to, to make it as close to $70.00 as I can…whats ... 
physics
A 1.20 block is attached to a spring with spring constant 14.0 . While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50.0 . What is the amplitude of the subsequent oscillations? 
physics
A high diver of mass 50.0 kg jumps off a board 10.0 m above the water. If her downward motion is stopped 1.80 s after she enters the water, what average force did the water exert on her? 
To Brittany and Ryan
BUUUUUUURN!!!! 
physics
A motorboat whose speed in still water is 3.00 m/s must aim upstream at an angle of 27.0^\circ (with respect to a line perpendicular to the shore) in order to travel directly across the stream. What is the speed of the current? 
physics
A diver running 1.8m/s dives out horizontally from the edge of a vertical cliff and 3.0s later reaches the water below. How high was the cliff, and how far from its base did the diver hit the water? 
calculus
The height (in feet) of a skydiver at time t (in seconds) after opening his parachute is given by h(t) = 4000 – 19t. Find the skydiver's velocity after the parachute opens. The answer should be in feet per seconds. I would appreciate if somebody helps.... Thank you. 
6 grade
I love basketball more than you. 
Algebra
How many milimiters of pure acid must be added to 150 milimiters of a 30% solution of acid to obtain a 40% solution? I know that the answer is 25 milileters. Could someone show me with steps how to get the answer. 
Algebra
If a computer costs an electronics dealer $300, and she sells them for $800, what is her rate of profit based on the selling price? I know the answer is 62.5% but could someone show me how to get this answer , thanks 
Biology
Why are the intestinal lenghts of algaeeating tadpoles and insecteating adult frogs so different? 
business
Please I need help with this question.. What are some controls that companies use to protect their assets? 
chem
what is(2.25x10*3)(4.80x10*4)= 
calculus
f (4 + h)  f (4) = 4h^2 + 4h (a) What is f '(4)? (b) What is the slope of the secant line through (4, f (4)) and (7, f (7))? 
Finance
Royal Cup’s last dividend was $ 1.00 per share and dividends are expected to grow at a rate of 6%. What is the current value of a share of this stock to an investor who requires a 10 percent rate of return? 
Finance
Caledonia last paid a dividend of $1 per share 2010. In 2007, the Caledonia paid a dividend of $0.84. This dividend growth rate is expected to be constant for the foreseeable future if the merger is not completed. If the merger is successful, the expected dividend for next ... 
12th grade  Math
Justify your answer: 1.) Which line is steeper? y= 4/3x  5 or y= 6/5x  1 2.) Does the slope of line AB exist? A (2,7) B (2,1) 
Finance
Determine the value of a $500 Canadian Pacific Limited perpetual 8 percent debenture if the required rate of return is 14% 
college
lead has density of 11.35g/ml,i have 3.45 cc of lead what is the weight in grams. 
chm
The mass of Oceanis 1.8*10 to 21 kg.The ocean contains 1.076%sodium ion,Na+what is mass of sodium in ocean 
jewelry markings
I have a ring that appears to be gold plate over silver with the markings COP copyright 89 5. Can you tell me what this means ? 
Math Probability
An insurance sales representative selects 3 policies to review. The group of policies she can select from contains 8 life policies, 5 automobile policies, and 2 homeowner policies. Find the probability of selecting” (a) All life policies (b) Both homeowner policies (c) ... 
childcare
nope one is C 
english
need some oratorical piece please 
Physics
Rotational Inertia Particle 1: m=50g x=2 cm y=2 cm P 2: m=25 x=0 y=4 P 3: m=25 x=3 y=3 P 4: m=30 x=e y=4 The question says to find the rotational inertia of the collection about the x, y, and 7 axis in g/cm^2, then suppose the x axis rotational inertia is A and the y axis ... 
Physics
Okay. So first for part b I know the formula I'm going to need is v=wr. That will relate the linear speed to the angular speed and we are given the radius. I'm still a little stuck though on the angular speed. I found the circumference of the wheel to be 10pi cm, and ... 
Physics
n early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the slots at the outside edge of the wheel, travels to a distant mirror, and returns to the wheel just in time to pass through the next slot in the wheel... 
chemistry
A voltaic cell is contructed in which a copper wire is placed in a 1.0 M Cu(NO3)2 solution and a strip of gold i placed in a 1.0 M AuNO3 solution. The measured potential of the cell is found to be 1.36V and the copper electrode is negative. The Ered for the Cu2+/Cu half cell ... 
chemistry
How do you determine if a salt is behaving as an acid or base? 
Maths
A square has an area of S^2 and a regular hexagon has a perimeter of T. If p is the perimeter of the square and h is a side of the hexagon, then find h+p in terms of S and T. 
computer science
Pseudo code: Input a list of employee names and salaries, and determine the mean (average) salary as well as the number of salaries above and below the mean 
college
is project management designed to transfer power from the line managers to the project manager? 
Chemistry
what is the precipitate formed when benedicts solution reacts with glucose? give the net ionic equation for the reaction. 
Calculus
Solve the following initial value problem and determine the interval where the solution exists. dy/dt = 2ty^2 y(0) = y_0 Textbook answer is: When y_0 <> 0, then y = 1/(1/y_0  t^2). When y_0 = 0, then y = 0 When y_0 > 0, the interval where solution exists is t < ... 
math
18.5 
algebra
Could someone please just basically describe how to solve rational equations? I don't understand them. :( 
accounting
0.6 
Chemistry
my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to copy says that In the equation HC2H3O2 + H20 <> C2H3O2( charge) + H3O(+ charge) HC2H3O2 is an acid H2O is a base C2H3O2( charge) is the conjugate base and H3O(+ charge... 
Philosophy
Which of the following ideas is important in virtue ethics? a) community b) duty c) natural human inclinations d) pleasure is it a??? 
English
In Homer Odyssey  According to Odysseus what is the cause of the doom he and his men face on the Island of Cicones? 
Economics
I'm supposed to use a price index for GDP chart to find the GPD deflator of 1983 how do i do that? To get the chart google nipa bea chart,click the first choice, and select tale 1.1.4 
Schindler's List Essay
You also only make mention of the SS, whereas Schindler had to deal with many other people from the German army, like the Gestapo, Members of the Secondary command, and general German army soldiers (Nazis) all of whom are depicted in the film. Also you haven;t made any mention... 
Schindler's List Essay
I would probably give it a 20 out of 50. This essay has a few good ideas, but overall contains much spelling and grammatical errors, and is overall poorly structured. By this I mean there are no links or comparisons between ideas, instead they are just tossed in randomly over ... 
pheonix university
Please select one of the following thesis statements: 1. America's top corporations are successful for a variety of reasons. 2. Scientists have discovered human remains thought to be more than 2 million years older than Lucy, a skeleton found in Ethiopia. 3. A healthful ... 
Math
600,000  x / 600,000 = .10 solve for x. 
ecology
Air pollution impacts us on a global level. What are the implications of global warming?