Friday

May 6, 2016
Total # Posts: 262

**chemistry**

If you burn 38.9 g of hydrogen and produce 348 g of water, how much oxygen is reacted?
*February 6, 2012*

**chemistry**

If you burn 38.9 g of hydrogen and produce 348 g of water, how much oxygen is reacted?
*February 6, 2012*

**geometry**

Did you get 200 for this particular problem? cause that's what I got, which doesn't make sense to me because it's suppose to be less than 120 since it's the smaller polygon
*February 4, 2012*

**geometry**

How do you find the perimeter of a second polygon given just the scale factor of both polygons and the perimeter of the larger polygon? The problem is Two similar polygons have a scale factor of 3:5. The perimeter of the large polygon is 120 feet. Find the perimeter of the ...
*February 4, 2012*

**math**

Cheryl is training for a long bicycle ride. Jim will drive Cheryl back and her bicycle 60 miles from town, drop them off, and then drive back to town. Cheryl then will ride her bicycle back to town. On the way back to town, Jim will travel at 50 miles per hour and Cheryl will ...
*February 1, 2012*

**math**

daniel collects $87.00 by selling paperback books for $0.50 each and hardcover for $4.00 each. let p be the number of paperback books he sells and h be the number of hardcover books he sells write an equation to represent this situation.
*February 1, 2012*

**math**

58 - 16= 42 42/6 = 7
*February 1, 2012*

**math**

jamie is saving money to buy a cd player that will cost $58, including tax. she has already saved $16. she can earn $6 per hour doing yard work. how many hours will jamie need to work to earn enough money to buy the cd player?
*February 1, 2012*

**Business**

#14 is B WTO #16 is A Perfect Competition
*January 24, 2012*

**math**

let fbe a function that is even and continuous on the closed interval [0,3]. the function f and itsderivatives have the properties indicated in the table below. sketch the graph. x 0 0<x<1 1 1<x<2 2 2<x<3 f(x) 1 (+) 0 (-) -1 (-) f’(x) DNE (-) 0 (-) DNE...
*January 22, 2012*

**math**

(x^3+7x+12)/(x-4) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval
*January 22, 2012*

**math**

f(x)=x/(x^2+x-2) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval
*January 22, 2012*

**math**

f(x)=x^3+6x^2+9x find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval
*January 22, 2012*

**Anatomy and Physiology**

Discussion Topic: Chemistry of Life, Cells, and Tissues Select an organ and provide an example of how it uses the following: carbohydrates, lipids, proteins, and nucleic acids. Also, describe an area of interest related to one of the types of molecules, for example, ...
*January 14, 2012*

**Anatomy and Physiology**

Discussion Topic: Chemistry of Life, Cells, and Tissues Select an organ and provide an example of how it uses the following: carbohydrates, lipids, proteins, and nucleic acids. Also, describe an area of interest related to one of the types of molecules, for example, ...
*January 14, 2012*

**physics**

A string under a tension of 43 N is used to whirl a rock in a horizontal circle of radius 3.3 m at a speed of 26.46 m/s. The string is pulled in, and the speed of the rock increases. When the string is 0.635 m long and the speed of the rock is 80.5 m/s, the string breaks. What...
*December 19, 2011*

**A=LxW**

Length of a rectangle is 13 cm less than 5 times it's width. Its area is 28 square cm. Find dimensions of rectangle
*December 6, 2011*

**Geometry**

how do you find the orthocenter of a triangle with the vertices A(4,0) B(-2,4) C(0,6)? Please explain to me how you get x after doing point slope form for the two slopes.
*December 4, 2011*

**chemisty**

give the conjugate base for HNO2
*November 29, 2011*

**geometry**

never mind...i understand
*November 19, 2011*

**geometry**

Hey Steve, Thanks....but how could it be -4?
*November 19, 2011*

**geometry**

what is the orthocenter of triangle with the vertices of X(-11,0), Y(-11,-8), Z(-1,-4)?
*November 19, 2011*

**Reading**

i think it is line 14
*November 14, 2011*

**Chemistry**

Thanks page
*November 9, 2011*

**Psychology**

How do the ideas of positive psychology differ from the traditional model of illness?
*October 18, 2011*

**Arrays and Expanded Algorithm**

82
*September 22, 2011*

**science**

The physical properties of carbon vary widely with the allotropic form.
*September 19, 2011*

**Uni Math**

Simplify and state the domain: x'2 +1 . x'2 - 9 x'2 + 2x – 3 x'2 – 2x -3
*September 15, 2011*

**Geometry. Please help.**

1. The complement of an angle is 10 degrees less than the angle itself. Find the angle and it's complement. Find the perimeter and area of the following figures with the vertices given: a) A (3, 5) B (3, 1) C (0, 1) b) Q (-3, 2) R (1, 2) S (1, -4) T (-3,-4) c) G (-4, 1) H...
*September 14, 2011*

**Geometry. Please help. **

Thank you!!!(= I get it now
*August 30, 2011*

**Geometry. Please help. **

1) Two angles are complementary. The measure of one angle is 21 more than twice the measure of the other angle. Find the measure of the angles. 2) If a supplement of an angle has a measure 78 less than the measure of the angle, what are the measures of the angles? Please don&#...
*August 30, 2011*

**physical science**

what is the freezing point depression when 153g of bromine is added to 1000g of benzene?
*August 18, 2011*

**physical science**

what is the freezing point depression when 153g of bromine is added to 1000g of benzene?
*August 18, 2011*

**physical science**

what is the freezing point depression when 153g of bromide is added to 1000g of benzene?
*August 18, 2011*

**Pen Foster**

checking my answers in Introduction to Allied Health anyone have that one?
*August 12, 2011*

**algebra**

So the answer would be to be able to pay 89.09 more a month.
*August 9, 2011*

**Algebra**

Evaluate log36(1/6) I believe the answer is -.5 but I just wanted to check to make sure I was doing this correctly. Thank you!
*August 7, 2011*

**Algebra**

Thank you - that is exactly what I thought!
*August 7, 2011*

**Algebra**

I think this is a easy trick question, so I probably know the answer but I just wanted to double check. What is the domain and range of the function f(x) = 3^x Find the f^-1 and its domain and range? Thanks for your help.
*August 7, 2011*

**algebra**

Suppose a sample of Cesium-137 with initial mass of 200 grams decays to a mass of 160 grams voer the course of 10 years. Find the half-life of Cesium-137 (Round to the nearest year) How much Cesium-137 is left in the sample after 60 years? Round to the nearest tenth of a gram.
*July 30, 2011*

**chemistry**

what is the volume of a rectangle that has a mass of 19.0 and a density of 10.50 g/mL
*July 16, 2011*

**College Algebra**

Thank you bobpursley!
*July 15, 2011*

**College Algebra**

A farmer has 100 yeards of fencing with which to enclose two adjacent rectangular pens both bordering a river. The farmer does not need to fence the side with the river. What should the dimensions of the two pens together (a rectangle) be in order to yield the largest possible...
*July 15, 2011*

**Chemistry**

How many grams are in 8.2x10 to the power of 22 molecules of Fe2O3?
*June 15, 2011*

**math**

A partial payment is made on the date(s) indicated. Use the United States Rule to determine the balance due on the note at the date of maturity. (The Effective Date is the date the note was written.) Assume the year is not a leap year. P $1900, R 6%, effective date april 10, ...
*June 13, 2011*

**Empirical Probability**

Explain how empirical probability can be used to determine whether a die is “loaded” (not a fair die).
*May 30, 2011*

**Chemistry **

Which shows 15/c9d3 in simplified radical form with the smallest possible index?
*May 25, 2011*

**Science**

There's a grauph and obove the grauph it says gravity (mass movement) and then it says pg 67 69 and i dentify 4
*May 5, 2011*

**MP Marking**

It stands for maylin products.. I have a ring with same MP.. And I've. Been on google tryin to find out more info
*April 28, 2011*

**chemistry**

At room temperature, 20° C, water (H2O) is a liquid and oxygen (O2) is a gas. Based on kinetic molecular theory, which answer best explains the states of the two fluids?
*April 18, 2011*

**Science PLEASE HELP!!**

Relate the function of the following protist structures to human organs with similar functions: a)nucleus b)contractile vacuole c)food vacuole
*April 12, 2011*

**chemistry**

Calculate how many mL of the 5% w/v AgNO3* solution must be added to 0.4020g of the sample to precipitate all the chloride. Assume the sample is NaCl. * this means tat there are 5 grams of silver nitrate present per 100ml of solution.
*April 3, 2011*

**math**

Algebra:Functions Tell whether each represents a function. Explain. Area=LenghtxWidth
*March 29, 2011*

**Chemistry**

What happens if a student adds distilled water to a flask before starting the titration?
*March 29, 2011*

**Chemistry**

What happens when NaOH has been sitting for a couple of days without cover before starting the titration?
*March 29, 2011*

**Math **

Yeah that's what I thought. But I wasn't sure which was greater, the larger exponent or the smaller one. It's kinda confusing when your dealing with decimals and negative exponents. But thankss :)
*March 28, 2011*

**Math **

Which expression represents the larger number? A. 40.1 x 10 to the -6 power B. 4.1 x 10 to the -7 power C. 0.411 x 10 to the -6 power D. 0.04001 x 10 to the -5 power I got A, but I'm not quite sure if it's the right answer :/
*March 28, 2011*

**physics**

a 650 newton crate rests on the floor. how much work is required to move it at a constant speed, 3 meters against a friction force of 150 Newtons
*March 22, 2011*

**Word Problems**

The manager has one type of coffee that sells for $5 per pound and another type that sells for $11 per pound. The manager wishes to mix 90 pounds of the $11 coffee to get a mixture that will sell for $10 per pound. How many pounds of $5 coffee should be used?
*March 7, 2011*

**Chemistry**

If you react 55g of hydrazine and 55g of oxygen gas, what is the maximum moles of nitrogen dioxide gas that can be made and what is the limiting reagent?
*March 1, 2011*

**Math please help!!**

Solve the system using substitution. y = -2x + 5 3y = -x - 5 I already got the answer, just wanna make sure it's correct. Please show work as well.
*February 28, 2011*

**Math**

Solve each system x + 3y = 6 4x - 5y = 7 I need to know what x and y equal??
*February 23, 2011*

**Math**

Solve each system x + 3y = 6 4x - 5y = 7 I need to know what x and y equal??
*February 23, 2011*

**Math**

Oh alright I got it thank you :)
*February 23, 2011*

**Math**

What is 10x + 2y - 10 = 0 in slope intercept form ? and can you also explain how you got the answer cause I'm not really sure how to convert that into slope intercept (y = mx + b) m = slope and b = y intercept
*February 23, 2011*

**Math**

solve each system 1) 3x + y = 6 2x + 3y = 13 2) 2x + 5y - 6 = 0 -2x + y - 2 = 0 3) x + 3y = 6 4x - 5y = 7
*February 22, 2011*

**Math**

Okay so no one wants to help... alright -_-
*February 22, 2011*

**Math**

OMG SOMEONE HELP PLEASE !!!! :/ I'm desperate
*February 22, 2011*

**Math**

So my teacher is making me solve systems by graphing. One of them was 3x + y = 6 and 2x + 3y = 13 . I converted both of them into slope intercept form and got y = -3x + 6 and y = -2/3x + 13/3 . The thing is I don't know how to graph a fraction ?!?!?! And if I turn that ...
*February 22, 2011*

**Biology**

Kay so these are the strands of DNA 5' C C A G T A G T T 3' 3' G G T C A T C A A 5' Let's say the DNA molecule above were the parent strand of DNA. when the strands are split for replication, which strand would be the template for the leading strand? And ...
*February 20, 2011*

**Math **

1) What is the slope of a line that is parallel to y = 2? 2) What is the slope of a line that is perpendicular to y = 2? 3) What is the slope of a line that is parallel to x = -4? 4) What is the slope of a line that is perpendicular to x = -4? I don't get any of these ...
*February 16, 2011*

**Math**

I'm sure about it now :) Thank you for your help. I know it is C because once I put in the x and y axis into the equation, I multiplied 1/5 with -10 then added one and the result was three that's how I knew it was C :)
*February 15, 2011*

**Math**

Ummm is it C?
*February 15, 2011*

**Math**

For 1, I got G and for the second one I got B. are they correct?
*February 15, 2011*

**Math**

I need help with two problems. Just want to make sure that the answers I put are correct. 1) Which of the following is an equation of a vertical line? F. 4x + 5y = 0 G. -4 = 16x H. 3y = -9 I. 4x + 5y = -1 2) Which equation is the equation of a line that passes through (-10, 3...
*February 15, 2011*

**chemistry**

11 g over 100 g H2O at 20 degrees celsius
*February 8, 2011*

**5th math**

Math fractions decimals and percentage
*January 27, 2011*

**Math **

Please... someone help! :(
*January 26, 2011*

**Math **

For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's the slope, How am I...
*January 26, 2011*

**Math **

For the equation y = -6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = -6x, what is the slope and y intercept? Is -6 the y intercept or the slope? Because if it's the slope, How am I...
*January 26, 2011*

**Math**

Thank you (: Yes, I did. It's correct right?
*January 15, 2011*

**Math**

1. What are the next two terms of the following sequence? -3, 1, 5, 9... 2. What are the next two terms of the following sequence? -2, 4, -8, 16... 3. What is the common difference of the following arithmetic sequence? 13, -7, -27, -47... 4. What is the ninth term of the ...
*January 15, 2011*

**Math**

Write an equation in slope-intercept form of the line that passes through the given points. 1. (-3,4), (1,4) 2. (3, -2), (6,1)
*January 13, 2011*

**Math **

Describe a pattern in the sequence 4, 6.5, 9, 11.5 & find the next two terms of the difference.
*January 12, 2011*

**Math**

The domain of t(x) = -3.8x - 4.2 is {-3, -1.4, 0, 8}. What is the range?
*January 12, 2011*

**Math **

You earn $7.25 per hour babysitting. Write and solve an inequality to find how many full hours you must work to earn at least $200
*January 11, 2011*

**math**

What is a function rule for the perimeter P of a building with a rectangular base if the width w is two times the length l?
*January 4, 2011*

**Math**

The general gist of the question: Peter has to go to an office store, an electronics store, a clothing store, and a sporting store. There are 4 office stores, 4 electronic stores, 8 clothing stores and 5 sporting stores. How many combinations are there? Do I need to do a ...
*December 12, 2010*

**english**

What are you trying to say? It all depends on what you're trying to express. If you're answering a question "When did x happen?" you should answer "X happened when I was spoon-feeding her soup." The key here is that every sentence is a complete, ...
*December 11, 2010*

**chemistry**

146 mL of wet H2 gas is collected over water at 29.0 degrees celsius and room pressure of 750 torr. give the volume of the dry H2 gas collected at STP, give the mass of the dry H2 collected, and give the volume of the dry H2 at room conditions and the volume of H2O in the ...
*December 8, 2010*

**algebra 2**

27x^3-8=0 (difference of two cubes)
*December 6, 2010*

**bonar law**

I just want to know if when I am doing this equation, that the answer to b) is figuring out the x-intercept
*December 5, 2010*

**6grade**

5*5*2*
*December 2, 2010*

**social studies**

It affected them because there was more demand for them and a lot of big plantations.
*November 15, 2010*

**physics**

how do you find the initial velocity and final velocity of a ball shot up and off a cliff using only the distance and max height and time
*November 11, 2010*

**English**

How did boy come into modern English
*November 4, 2010*

**Ecology**

4. B 5. D 6. C 7. D 8. B 9. B? 10. D
*October 29, 2010*

**8th grade pre algerbra**

7.5
*October 21, 2010*

**grammar**

what would be a good thesis for a Jay Z paper?
*October 19, 2010*

**Physics**

A 325 kg boat is sailing 15.0 degrees north of east at a speed of 2.00 m/s. Thirty seconds later, it is sailing 35.0 degrees north of east at a speed of 4.00 m/s. During this time three forces act on the boat: a 31.0 N force directed 15.0 degrees north of east (due to an ...
*October 14, 2010*