Monday

August 31, 2015
Total # Posts: 522

**AP Biology**

In 1918 a particularly virulent strain of influenza (an RNA virus) wiped out millions of health humans in the prime of their lives. Epidemiologists fear that such a super bug could revisit us in the future. And thus there was quest to find samples of the virus, and make a ...
*March 28, 2012*

**Math**

A company that produces a particular machine component has 3 factories, one each in Buffalo, Detroit, and Pittsburgh. 39% of the components produced come from the Buffalo factory, 36% of the components come from the Detroit factory, and 25% of the components come from the ...
*March 22, 2012*

**Algebra 2**

Write a rule for the nth term of the arithmetic sequence. ( I'm not sure how I'm suppose to write the numbers below a :C so bare with me ) a(2) = - 28, a(20) = 52 I used the formula a(n) = a(1) + ( n-1)d a(20) = a(1) + (20-1)d > 52 = a(1)+19d a(2) = a(1) + (2-1)d &...
*March 15, 2012*

**Math(alg2)**

solve the exponential equation 5(2)^2x - 4 = 13 thanks
*March 13, 2012*

**science**

a car starts from a stopped position at a red light at the end of 30 second its speed is 20 meters per second what is the acceleration of the car
*March 2, 2012*

**chem**

How much heat is required to heat 0.1 g of ice at −30 degrees C to steam at 100 degrees C
*March 1, 2012*

**chem **

The standard molar heat of vaporiza- tion for water is 40.79 kJ/mol. How much energy would be required to vaporize 2.54 ×1010 molecules of water? Answer in units of kJ
*March 1, 2012*

**physics**

If a wheel 211 cm in diameter takes 2.25 s for each revolution, find its period. T=?s
*February 18, 2012*

**Chemistry**

Heating an ore of antimony (Sb2S3) in the presence of iron gives the element antimony and iron(II) sulfide. Sb2S3(s) + 3Fe(s) ---> 2Sb(s) + 3FeS(s) When 15.0 g Sb2Sb3 reacts with an excess of Fe, 9.84 g Sb is produced. What is the percent yield of this reaction?
*January 25, 2012*

**Spanish-9th gradePlease check**

Thank you
*January 25, 2012*

**Spanish-9th gradePlease check**

Thank you very much
*January 25, 2012*

**Spanish-Please check SraJMcGin if possible-9th gradePlease check**

I'm not sure if SraJMcGin is still answering questions but I would appreciate her checking this if she still does Thank you
*January 25, 2012*

**Spanish-9th gradePlease check**

I have a question-I have to write the verb correctly for these two sentences Did I do them correctly? 1. nosotros/lavarnos Nosotros nos lavamos. 2. yo/ponerme Yo me pongo.
*January 25, 2012*

**PreCal**

Projectile Motion: An object is propelled upward at an angle theta, 45 degree < theta <90 degree, to the horizontal with an initial velocity of v0 feet per second from the base of an inclined plane that makes an angle of 45 degree with the horizontal. If air is ignored, ...
*January 18, 2012*

**PreCal**

Angel of Elevation: You are skiing down a mountain with a vertical height of 1500 feet. The distance from the top of the mountain to the base is 3000 feet. What is the angle of elevation from the base to the top of the mountain? Traveling at 25 miles per hour, how long does it...
*January 18, 2012*

**English**

Connections does not give you enough resources and their lessons you pull up and a joke. they aren't even that good and informative. Everything is click here go there ad half the time it doesn't work. I hate not having an actual book in front of me. Not digging ...
*January 9, 2012*

**spanish**

Adonde vas despues de comer?
*January 6, 2012*

**Economics**

so D?
*December 4, 2011*

**Economics**

If the government announced the economy is headed into an expansionary period of rising real GDP and prices, businesses would most likely respond by: a. lowering wages so that they could afford to hire more workers b. dismantling some of existing production facilities c. ...
*December 4, 2011*

**Mnagemeny**

I need assistance with a problem. can anyone help?
*November 19, 2011*

**Math**

Change them all to the same denominator. The common denominator is 120
*November 11, 2011*

**math**

600 times .06 times 12. Add this answer to 600.
*November 10, 2011*

**algebra**

m to the second
*November 10, 2011*

**algebra**

There is no answer. You cannot divide by 0.
*November 10, 2011*

**Algebra 2**

P=the principal ( the amount borrowed) R=the rate(percent) T=time the amount is borrowed I=interest You must multiply P R T together to get the interest
*November 8, 2011*

**ENGLISH**

PLEASE HELP !! Identify the pronoun in the sentence below. Also identify the class and noun function of the pronoun using the abbreviations from the chart. For intensive pronouns, put NONE for noun function. 1.Robert was successful because his planning paid off 2.Tim said he ...
*November 3, 2011*

**english**

Identify the pronoun in the sentence below. Also identify the class and noun function of the pronoun using the abbreviations from the chart. For intensive pronouns, put NONE for noun function. That was a very long phone call.
*November 3, 2011*

**physics**

The coefficient of static friction between the 3.0 kg crate and the 31° incline shown below is 0.300. What is the magnitude of the minimum force, F, that must be applied to the crate perpendicularly to the incline to prevent the crate from sliding down the incline?
*October 23, 2011*

**Spanish**

If I wanted to say "Those butterflies are the prettiest of all." would I say this sentence or should the "esas" be "estas"? Esas mariposas son las más bonitas de todas las mariposas
*October 22, 2011*

**Physics**

Awesome, thanks!
*October 19, 2011*

**Physics**

A force of 15.00 N to the right causes a 2.02 kg book to have a net acceleration of 0.81 m/s2 to the right. What is the frictional force acting on the book?
*October 19, 2011*

**Physics**

A pure copper penny is slid along a steel counter top. If the coefficient of kinetic friction between the copper and the steel is 0.36, what is the magnitude of the penny's acceleration?
*October 19, 2011*

**Physics**

Hi! Sorry the math for the proposed answer is wrong. The equation was manipulated incorrectly and will give a wrong answer
*October 17, 2011*

**ochem**

is cis-1,2-dimethylcyclohexane a conformational isomer of trans-1,2-dimethylcycloehexane? Please explain.
*October 13, 2011*

**Science**

What did Sir Humphry Davy do with the battery he built? I've looked online and haven't been able to find anything. Please help me!!!!
*October 2, 2011*

**Statistics**

9 trucks arrive per hour. It takes 6 minutes after reaching the loading station. Two alternatives to modify the situation. One is to change the trucks and add a helper at the loading station at a cost of 50,0000. This would change the arrival time of the trucks to 6 per hour ...
*September 29, 2011*

**WRITE THE NUMERAL MATH**

3,000,859
*September 28, 2011*

**MATH**

85,700,038
*September 28, 2011*

**math 11 grade**

sequence of 2,5,14,41
*September 26, 2011*

**math**

^the answer is -12, it says so in the back of my book. But once everything is multiples of 1/32, simplify. then the problem should now be 24x-21x=-36 . then subtract that, you get 3x=-36 . -36/3=-12 therefore, your answer is x=-12. Don't forget the negative.
*September 21, 2011*

**chemistry**

A student suspected that an unknown was undergoing a chemical change at its melting point. Suggest a simple method for testing this hypothesis.
*September 15, 2011*

**English **

Also, for the first one-I've reread the paragraph, and now I think it would be two characters-Montrsor is the I and Fortunato is "he" because "you" is not a character,is it? Here is what I meant by number: 3Natural consequence is just something that ...
*September 13, 2011*

**English **

We had to read the opening paragraph of "The Cask of Amontillado" and analyze it with the following questions. I really need help. I understand Montresor is going to seek revenge upon Fortunato. 1.In the first paragraph, how many characters are mentioned? I think 3 2...
*September 13, 2011*

**chem101**

Why is CH3CH2NH2 the least acidic?
*September 11, 2011*

**chem101**

which of the following compounds have polar bonds and a net dipole moment? a) H3COH b) H3CCOCH3 ALSO PLEASE CHECK THIS, RANK THE FOLLOWING FROM MOST TO LEAST ACIDIC COMPOUND: A)H2SO4>H3CCO2H>H20 B)H3CCH2NH2>H3CCH2OH>H3CCO2H
*September 11, 2011*

**math**

Add 3 to both sides. Result is 1/2x=6. Now multiply both sides by 2. This gives you 12. This is the final answer.
*September 1, 2011*

**Math**

I have a square cake. The cake is iced on top and all the sides. I need to cut the cake in 6 pieces all pieces getting the same amount of cake and icing. Please help me if possible with a diagram.
*September 1, 2011*

**math**

Use the quadratic formula
*September 1, 2011*

**Science**

Abbreviations you can use for science?
*August 25, 2011*

**4th grade math**

100,000
*July 25, 2011*

**Social STUDIES**

I agree with all of the answer
*July 7, 2011*

**Trigonometry**

Solve: 2 cos[x-ð/8]-sqrt2=0
*May 30, 2011*

**Trigonometry**

If tan theta= 3 and ð<theta< 3ð/2, find cos theta.
*May 30, 2011*

**Math (pre-algerbra)**

I've tried this sooo many times I have huge marks on my paper and I just can't figure it out: 3a/8-a/12+7/2=7
*May 9, 2011*

**math**

47 divide by 6
*May 4, 2011*

**speech**

why is australia a luck contry
*May 3, 2011*

**5 grade math**

$3,000,000,000,000,000 how much is this in words?
*May 2, 2011*

**math**

which of the numbers are integers? 11/3,9.7,-163,-3/8,1
*April 26, 2011*

**math**

The following scores were recorded on a 100-point examination: 95, 75, 76, 86, 96, 71, 68, 81, 95, 76, 69, 82, 93, 88, 94 Find the mean and median final examination scores.
*April 25, 2011*

**math**

1.)Name the property that is illustrated. a) 7 „e 6 ƒ 6 „e 7 b) 7 ƒy (1 ƒy 9) ƒ (7 ƒyƒn1) ƒy 9 2.) a) Identify the base in the following statement b) Solve for the amount. What is 81% of 285? 3.)a) Find the supplement of...
*April 25, 2011*

**Math**

Corinne rolls two six-sided number cubes with sides labeled 1-6. What is the probability that she rolls a 6 on both cubes? A. 1/36 B. 1/12 C. 1/6 D. 1/3 I think its A
*April 20, 2011*

**chemistry**

The legal limit for drunkenness is 0.08 ( 0.08 grams of alcohol per 100ml of blood). expired air contains the following main gaseous components by volume: 74.1% N2; 15.0% O2; 6.0% H2O; 0.9% Ar; and 4.0% CO2 at 37 degrees Celcius and 1 atm. Determine the density of ethanol.
*April 19, 2011*

**Math**

Which statement is correct? A. All intergers are rational numbers. B. All irrational numbers are whole numbers. C. A real number must be a rational number. D. A repeating decimal is an irrational number I think it's either A or C.
*April 18, 2011*

**Math**

I have three more questions I do not understand. 1. Two points (-1,1) and (3,-2) are graphed on a coordinate plane. What is the shortest distance between the points? A. 3 B. 4 C. 5 D. 7 I have no idea how to do this. 2. Which expression represents the nth term in the sequence ...
*April 18, 2011*

**Math**

Thanks so much!
*April 18, 2011*

**Math**

The chart shows the number of cars sold per week at a car dealership during the month of June. Salesperson Week 1 Week 2 Week 3 Week 4 Tim 4 8 2 1 Geena 1 2 7 1 Rafael 2 1 5 4 Sonny 4 1 1 10 How should the data be displayed to make the most convincing argument that sales ...
*April 18, 2011*

**Math**

Check my answer please? Yuri is wrapping presents. The first box measures 9 inches by 12 inches by 2 inches. He has a second box with dimensions that are each half of the length of the first box. How does the surface area of the second box compare with the surface are of the ...
*April 17, 2011*

**Math**

Could you please check my answer? Subtract: (6a+2b-5c)-(3a+2c) My answer was: 3a+2b-7c
*April 13, 2011*

**Math**

I'm confused on two questions that are kind of similiar: State the slope and y-intercept of y= -1/2x I know the slope is -1/2 but I don't know the y-intercept State the slope and y-intercept of y= 3x-4 I know the slope is 3, but I don't know if the y-intercept is 4...
*April 11, 2011*

**Math**

Vera wrapped a package that measured 8 in. by 10 in. by 5 in. Find the surface are of the package. I really don't know why I'm having trouble with this problem, but for some reason I just don't know where to start it.
*April 5, 2011*

**Math**

Which measure of central tendency best describes these data? 100, 5, 90, 95, 100 A. the mode only B. the mean and the median C. the mean only D. the median only I've never really understood central tendency
*March 31, 2011*

**Math**

Thank you!!
*March 31, 2011*

**Math**

B. every twenty-fifth name in the town's census directory
*March 31, 2011*

**Math**

Charlotte wants to conduct a survey to find out if the people in her town think that the town should build a new library. Which group of people would be a representative sample to survey? A. parents with children in middle school B. every twenty-fifth name in the town's ...
*March 31, 2011*

**Math**

What is the probability of drawing a heart or a diamond from a standard deck of 52 playing cards? I got 1/2, is this correct?
*March 30, 2011*

**Math**

Okay thanks
*March 30, 2011*

**Math**

What is the probability of rolling a number cube and getting an even number or a multiple of 3? I got 4/6 as the probability, but that isn't a choice. 6 is a multiple of 3 and an even number, so if I count 6 once, then I get 4/6 as the probability. But if I count 6 twice (...
*March 30, 2011*

**Math**

Okay, so the first quartile would be 40, right?
*March 29, 2011*

**Math**

You received scores of 70, 40, 70, 90, and 40. Find the first quartile. I don't even know what a quartile is.
*March 29, 2011*

**Chemistry**

When someone buys fish at the fresh fish market, they should smell the fish to test for freshness, the less “fishy” the smell the fresher the fish. I am supposed to explain the source and chemistry, including reactions, structures, and names of the compounds, behind ...
*March 28, 2011*

**marketing**

to encourage managers to disregard the criterion that a product-market segment should be substantial
*March 27, 2011*

**3rd grade math**

47 by 6
*March 27, 2011*

**Math**

Thanks, I was confused on this problem! And yes, that's what I thought when I read that gas was only $1.22!
*March 21, 2011*

**Math**

The gas tank of a car holds 20 gallons of gas. A gallon of gas costs $1.22. When the tank was filled it cost $20. About what percent of the tank was filled?
*March 21, 2011*

**Math**

Thank you both!!
*March 14, 2011*

**Math**

A molecule of water is made up of 2 atoms of hydrogen and 1 atom of oxygen. What percent of the atoms of a water molecule is oxygen?
*March 14, 2011*

**Penn Foster**

Haha!Glad someone finally got to bottom of this!Happened where I met some people and they said how it was easy to get their degree with getting answers of this site!Made me mad!
*March 8, 2011*

**geometry**

the ratio of the perimeter of two similar squares is 5 to 4. If the area of the smaller square is 32 square units, what is the area of the larger square?
*March 7, 2011*

**Math**

Okay I get it now. Thank you so much!
*March 1, 2011*

**Math**

I have no idea how to do this problem: Select the expression below that is equal to 4(9-m). A. 4m-36 B. 13-m C. 36-m D. 36-4m
*March 1, 2011*

**Math**

Thank you!!
*February 27, 2011*

**Math**

Could you please check my answer? I did this: 10+10=20. 5.49/20=0.2745 per battery 4+4=8 2.98/8=0.3725 per battery The better deal is if you buy the one 10 pack for $5.49 and get one free.
*February 27, 2011*

**Math**

Find the unit price and tell which is the better buy: Buy one 10 pack of AAA batteries for $5.49 and get one free, or buy two 4 packs for $2.98.
*February 27, 2011*

**Math**

Find the unit price and tell which is the better buy: A 64 oz. bottle of juice costs $2.39, and a 20 oz. bottle costs &0.79. You can use a 20-cents-off-coupon if you buy four 20 oz. bottles or a 15-cents-off-coupon if you buy a 64 oz. bottle. Which is the better buy?
*February 27, 2011*

**chemistry help**

so is it 900 and 4180 is that the difference???
*January 17, 2011*

**chemistry help**

a kilogram of aluminum metal and a kilogram of water are each warmed to 75 degree celisus and placed in two identical insulated containers. one hour later, the two containers are opened and the temperture of each substance is measured. the aluminum has cooled to 35 degree ...
*January 17, 2011*

**chemistry help**

a kilogram of aluminum metal and a kilogram of water are each warmed to 75 degree celisus and placed in two identical insulated containers. one hour later, the two containers are opened and the temperture of each substance is measured. the aluminum has cooled to 35 degree ...
*January 17, 2011*

**chemistry**

a kilogram of aluminum metal and a kilogram of water are each warmed to 75 degree celisus and placed in two identical insulated containers. one hour later, the two containers are opened and the temperture of each substance is measured. the aluminum has cooled to 35 degree ...
*January 17, 2011*

**Algrebra II-please check my answer**

Determine the zeros of the function 7x^2 + 9x = 0 answers were: {-9/7} {-9/7,0} {o,9/7} {9/7} I think the answer is {-9/7,0} but I'm not positive when I worked it-If this is wrong please steer me into the correct calcs because then I don't what I'm doing wrong 2....
*January 14, 2011*