Saturday

February 28, 2015

February 28, 2015

Total # Posts: 130

**chemistry **

DNA is approximately 2.5nm in length. IF an average man is 5ft 10 in. tall, how many DNA molecules could be stacked to extend from the ground to the top of the head of an average man.
*January 27, 2015*

**history (presidents)**

Which of the following lists of presidents is in correct chronological order? A. Roosevelt/Taft/Arthur/Wilson/Grant B. McKinley/Roosevelt/Johnson/Buchanan/Cleveland C. Jefferson/Monroe/Taylor/Harrison/Harding D. Coolidge/Hoover/Adams/Reagan/Lincoln E. Washington/Clinton/Bush/...
*March 3, 2014*

**Statistic**

A statistic instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags.They weighed 10.4, 10.9 , 10.8, and 9.9 pounds.assume that the distribution of the weights is normal. Find a 95% confidence interval for the mean weight of all bags ...
*December 6, 2013*

**physics**

A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?
*October 7, 2013*

**Math**

The price of an electric fan increased by 25% to $48.75. Find the original price of the fan.
*March 6, 2013*

**Math**

Your parents took your family to dinner. Your parents wanted to give the waiter a 15% tip. If the total amount of the dinner was $42.00. What should be paid to the waiter as a tip.
*March 6, 2013*

**english**

How important of a factor does money play in the lives and happiness of individuals? is this sentence grammatically correct?
*January 16, 2013*

**Physics**

1. The mass of Kerry and the sledge together is 40 kg. Sam pushes with a force of 50 N for 4 s. a. What is the value of the quantity: (force x time) during which the force acts? 50 x 4 = 200 b. So what is the increased momentum of Kerry and the sledge? c. What speed does Sam ...
*October 17, 2012*

**Math**

Please help solve and explain it, thank you. 1. Juan, Steve and Gabriella bought a total of 30 markers at an art store. Juan bought 3 more markers than Steve. Gabriella bought 7 times as many markers as Steve. How many markers did each buy? 2.
*September 25, 2012*

**American History**

Which of the following was John Rolfe's chief contribution to Virginia's economy A. His alliance with the Powhatan through his marriage to Pocahontas B. His invention of a better way to grow short-staple cotton C. His innovations in cultivating tobacco D. His ...
*February 23, 2012*

**math**

a student is painting one wall of a room. a square window is located in the middle of the wall to be painted. the window measures 3 feet on one side. the area of the wall, not including the window, is 80ft squared. find the height of the wall to the nearest tenth.
*January 10, 2012*

**math**

can u please help me with this math problem. i dont get how to do this question. Mrs. Mabie has a rectangle swimming pool that measures 25 feet by 14 feet. She wants to have a cement walkway installed around the perimeter of the pool. The combined area of the pool and walkway ...
*January 8, 2012*

**alg2/trig**

Which expression is defined for all real numbers? a) x + 3/x^2 b) 5/(x + 2)^2 c)4/(x − 2)^2 d)7/x^2 + 3
*October 2, 2011*

**geometry**

Find the length of a side of a square whose perimeter and area have the same value. help? perimeter of a square is P=4s & the area of a square is A=s^2
*September 25, 2011*

**anatomy'**

disease is an unhealthy state of a. organ system b.the entire body c. an organ d.all are true
*September 19, 2011*

**math **

solve the absolute value problem : 3x+|4x+5|=10
*September 18, 2011*

**Basic Statistics**

Q1. A population has a mean of µ = 80 with σ = 20. a. If a single score is randomly selected from this population, how much distance, on average, should you find between the score and the population mean? b. If a sample of n = 4 scores is randomly selected from this...
*July 25, 2011*

**HHS**

YES
*April 4, 2011*

**HHS**

What is the molality of a solution in which 15g of I2 is dissolved in 500g of alcohol?
*April 4, 2011*

**English**

what news of julilet does Romeos servant Balthasar bring?
*November 16, 2010*

**math**

Julian is interested in building a new house. Three architects have given him plans. The first plan is for a house that will be 2,250 square feet. The total cost of the house will be $281,250. The second plan is for a house that will be 2,400 square feet. The total cost of the...
*October 29, 2010*

**spanish**

C.sacarlos
*October 29, 2010*

**physics**

The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.020 s, falls back to zero at t=0.062 s, and reaches a maximum force of 55 N at the peak. Determine with an error no bigger than 25% (high or low) the magnitude of the...
*October 13, 2010*

**stats**

A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of that survey.) The ...
*October 2, 2010*

**math help**

A survey was done recently by the Royal Bank with Ipsos Reid (reported in Globe and Mail Aug 16 2010) about financial issues that university students face. (Data used here is based on that survey, but randomized to be still within the margin of error of that survey.) The ...
*October 2, 2010*

**Algebra**

Damon, Thanks for your help. Appreciate it.
*July 6, 2010*

**Algebra**

Explain why x^2 +5x + 8 is prime(not factorable) How do you know? Give 2 examples of a prime polynomial(can't be both binomials) Give 2 examples of polynomials that are not prime(they can't be both binomials),factor them,explain what you did to factor them. How would ...
*July 6, 2010*

**algebra**

Thank-you Damon
*July 6, 2010*

**Environmental Science**

microorganisms can't break down plastics because... I'm stuck between a) plastics are made from oil d) plastics don't occur in nature. Both of them are true, but I'm not sure which is the most true.
*February 20, 2010*

**communication**

When someone weighs their response to a health issue that they are confronting, knowing that they need to go to one healthcare facility or another for treatment, or, one physician or another for care...........what impact does reputation and word of mouth have on the direction...
*January 30, 2010*

**communication**

within the workplace.......let's try to apply the health belief model to that environment......when you have a mix of cultures and socioeconomic status and perspectives.......how difficult is it to get folks to 'move' together? How much should each person change in...
*January 30, 2010*

**summoner's tale**

what is funny about the summoner's tale
*December 4, 2009*

**spanish 2**

How do you say ways to get around in spanish and directions around the city
*December 4, 2009*

**spanish 2**

how do you say start, beginning, end, stay in spanish
*December 3, 2009*

**making a travel guide**

i need help creating a powerpoint of a travel guide about flordia
*December 3, 2009*

**Algebra**

How do you factor x-5x^3-6x^3? Thanks!
*November 23, 2009*

**Factoring**

Can you show me how to factor x-5x^2-6x^3, and why each step is done? I'm not sure how to factor something where the x is in front instead of the highest power, and something with both a ^2 and ^3 variable. Thanks!
*November 23, 2009*

**Algebra**

Why does 5x/6x^2 become 5/6x? How did x-x^2 become an x on the bottom? Thanks!
*November 22, 2009*

**Algebra**

How do you factor an x^3 as in x^3+5x^2+6? Is there a general rule you can follow?
*November 22, 2009*

**Algebra**

A few questions on simplifying rational expressions... 1). 15x^2/10x this simplifies to 3x^2/2 according to my book. But I would think it should be 3/2x since x^2-x=x. Why not? 2). Simplify 3xy/xy+x. How come the (xy)'s don't cancel so you are left with 3/x? 3). Can ...
*November 22, 2009*

**Dividing Rational Expressions**

x^3-8/x^2-4 divided by (x^2+2x+4)/(x^3+8). This becomes ((x-2)(x^2+2x+4)/(x+2)(x-2) times ((x+2)(x^2-2x+4))/(x^2+2x+4). I understand that (x-2)(x^2+2x+4)=(x^3-8) when I distribute it, however, if I didn't have the help of my book, I'd have no clue how to come up with ...
*November 21, 2009*

**COLLEGE LETTERS**

why would you want a teacher to write you a college recommendation? WHAT ARE REASON WHY THEY WOULD BE A GOOD RESOURCE
*September 10, 2009*

**SENIOR PROJECT IDEAS**

What are some good topics for a senior project to do?
*September 10, 2009*

**pre calc**

is 4,5, and 6 as well
*September 8, 2009*

**pre calc**

list the positivve integers between -3 and 7.
*September 8, 2009*

**algebra**

how did you do that
*April 30, 2009*

**algebra**

solve. 3x/2 + 8-4x/7=3
*April 30, 2009*

**social studies**

I need facts about infectious diseases in Ecuador
*April 23, 2009*

**social studies need more info**

which link to use?
*April 22, 2009*

**social studies need more info**

What does Ecuador plan to do about infectious diseases and what can the united nation do about it>
*April 22, 2009*

**social studies**

What does Ecuador plan to do on Infectious Diseases and what the United Nations plan to do>?
*April 22, 2009*

**social studies**

where do i go?
*April 22, 2009*

**social studies**

What can the United Nation do about this as well?
*April 22, 2009*

**social studies**

so the government is like weak they really don't want to help with the cause
*April 22, 2009*

**social studies**

What does Ecuador plan to do on Infectious Diseases?
*April 22, 2009*

**chemistry**

Why are water molecules polar?
*April 19, 2009*

**algebra need help**

Determine whether the geometric series converges or diverges. 27 + 18 + 12 + 8 + . . .
*April 14, 2009*

**algebra II**

Determine whether the geometric series converges or diverges. 27 + 18 + 12 + 8 + . . .
*April 14, 2009*

**english 3**

ok thank you I will try tha!!
*April 9, 2009*

**english 3**

can you give me some ideas of what to talk about
*April 9, 2009*

**english 3**

okay I will use the movie the blue lagoon
*April 9, 2009*

**english 3**

How can I compare Lord of the Flies to another work like a book or a movie? What should I inclued in the comparison in the powerpoint to make it creativity?
*April 9, 2009*

**chemistry**

The densities of the liquid and solid states of a substance are often similar. Explain.
*April 2, 2009*

**pre calc**

The terminal side of an angle in standard position goes through the poin (-2,5). Find the values of the 6 trig function sin cos tan csc sec cot
*April 2, 2009*

**pre calc**

1. com- 50 degrees sup=140 degrees 2. com = 1 degree sup= 91 degrees
*March 31, 2009*

**pre calc**

Find the complement and supplement of each angle. 1. 40 degrees 2. 89 degrees
*March 31, 2009*

**chemistry**

13 times 6 =78
*March 24, 2009*

**chemistry**

Determining a Molecular Formula from an Empirical Formula 1. A compund has an experimental molar mass of 78g/mol. Its empirical formula is CH. What is its molecular formula?
*March 24, 2009*

**algebra check these answere please**

so what to change #2 to? could you fix that one for me thanks
*March 23, 2009*

**algebra check these answere please**

Four quilters are preparing patches for a quilt. When finished, the quilt will contain 200 patches. The quilters’ contributions thus far are in the table below. Name Number if patches Lia 65 Brian 17 Elle 88 len 6 Find the probability that a randomly chosen patch: 1. Will...
*March 23, 2009*

** Independent and dependent events**

these are the answers for them
*March 23, 2009*

** Independent and dependent events**

can you show me how to start
*March 23, 2009*

** Independent and dependent events**

A six-sided-cube is labeled with the numbers 1, 2, 2, 3, 3, and 3. Four sides are colored red, one side is white, and one side is yellow. Find each probability. Tossing 2, then 2. Tossing red, then white, then yellow.
*March 23, 2009*

**ap stats**

Continuous Random Variable, I Let X be a random number between 0 and 1 produced by the idealized uniform random number generator described. Find the following probabilities: a.P(0less than or equal to X less than or equal to 0.4) b.P(0.4 less than or equal to X less than or ...
*March 18, 2009*

**history**

are there more beside that one person
*March 18, 2009*

**history**

What other poets wrote about the Middle Passage besides Robert Hayden?
*March 18, 2009*

**stats need help**

so for c. do i subtract the amounts of the two
*March 17, 2009*

**stats need help**

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample who ...
*March 17, 2009*

**chemistry**

so a= 1.075*10^16
*March 16, 2009*

**chemistry**

Find the mass in grams. a. 4.30 x 10^16 atoms He, 4.00 g/mol b. 5.710 x 10^23 molecules CH4, 16.05 g/mol c. 3.012 x 10^24 ions Ca^2+, 40.08 g/mol
*March 16, 2009*

**CHEMISTRY**

can you help me wih the first 2
*March 16, 2009*

**CHEMISTRY**

Find the number of moles. a. 3.01*10^23 molecules H2O. b.1.000*10^23 atoms C. c. 5.5610 *10^22 ions Na^+.
*March 16, 2009*

**stats need help**

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample who ...
*March 14, 2009*

**stats**

Violence in School, I An SRS of 400 American adults is asked “What do you think is the most serious problem facing our schools?” Suppose that in fact 40% of all adults would answer “violence” if asked this question. The proportion p of the sample who ...
*March 13, 2009*

**algebra**

Permutation For the lunch special, you can choose an entrée, a drink, and one side dish. How many meal choices are there
*March 13, 2009*

**algebra II**

permutation A “make-your-own-adventure” story lets you choose 6 starting points, gives 4 plot choices, and then has 5 possible endings. How many different adventures are there?
*March 12, 2009*

**chemistry**

A certain amount of chlorine gas was placed inside a cylinder with a movable piston at one end. The initial volume was 3.00 and the initial pressure of chlorine was 1.75 . The piston was pushed down to change the volume to 1.00 . Calculate the final pressure of the gas if the ...
*March 10, 2009*

**chemistry**

Mole and Particle practice How many representative particles (atoms, ions, molecules, etc) are present in each of the following? 1) 4.3 mol of tungsten 2) 2.45 * 10-6 mol nickel (II) selenide (NiSe) 3) 0.923 mol of selenium tetrabromide (SeBr4) How many moles are equivalent to...
*March 10, 2009*

**chemistry help**

si this is how you do a correct
*March 8, 2009*

**chemistry help**

Determine the number of moles of each specified atom or ion in the given samples of the following compunds.( Hint: the formula tells you how many atoms or ions are in each molecule of formula unit.) a. O atom in 3.161x10^21 molecules of CO2 b. C atom in 3.161x10^21 molecules ...
*March 8, 2009*

**algebra help asap**

Simplify: 5square root 9^10
*February 24, 2009*

**algebra**

solve and simplify 9^4/3 / 9^2/3
*February 23, 2009*

**chemistry**

what can i write as the result.
*February 19, 2009*

**chemistry**

The law of conservations of mass used for the chemical reactions will show that it will work. Cause mass can neither be created or destroyed. Can you add some more clues as well.
*February 19, 2009*

**chemistry**

so how can i write that as a result
*February 19, 2009*

**chemistry**

so it does not work
*February 19, 2009*

**chemistry**

Dose the law of conservation work when doing an expirement with vinegar and baking soda.
*February 19, 2009*

**history**

they were the native americans
*February 18, 2009*

**history**

is that also the french colonists
*February 18, 2009*