Friday
April 18, 2014

Posts by Sam


Total # Posts: 3,849

social studies
i need help with a U.S history question, how would i describe Roanoke? its an 8th grade U.S history question i need it FAST!!!

Chemistry
H2O is the same thing as HOH correct? Does it matter which one you use in a Double Replacement Reaction? To me personally, HOH is easier to balance. Would I get marked down if I left HOH in my balanced reaction, if technically speaking, both are interchangable?

Chemistry
A car travels at 60 miles per hour and gets 15 kilometers per liter of gasoline. How many gallons of gasoline are needed for a 2.2-hour trip? I'm confused on how to set-up conversion factors.

Chemistry
Suppose you have two 100- graduated cylinders. In each cylinder there is 44.0 of water. You also have two cubes: One is lead, and the other is aluminum. Each cube measures 1.5 on each side. After you carefully lower each cube into the water of its own cylinder, what will the n...

chemistry
A can of soda has 1.50x10^2 calories. Convert this energy to units of joules.

math
Factorize the following: 2x^2 + 3x - 7

Marketing
Which one of the following statements about wholesaling is true? a) field warehouses are necessary in order for the wholesaling function to be completed b) wholesaling activities must be performed during distribution of all goods, whether or not a wholesaling institution is in...

Chemistry
1.99 -> rounds to 2

maths
How to find distance and midpoint b\w the given points: a. (-3,-1)and(9,4) b.(3rs,-s2)and(rs,-r2) Find the length of given quadrilateral: (-8,-3),(-2,6),(8,5)and(2,-4)

Chemistry
A sample of a compound of mercury and bromide with a mass of .389 was found to contain .111g bromine. Its molar mass was found to be 561 g mol-1. What are its empirical and molecular formula. Please detail each step in the process. Thanks in advance!

math
5x - 2 + 3x= 17 + 12x - 23

math
the answer is -10 according to the back of my book.. but idk how to get that..

math
thank u very! much! u are very kind!

math
13x + 15= 11x - 25

math
OMg thank u sooo much!!! :)))))))

math
PLEASE HELP!!!!!!!!!!!!! :(

math
Barry's family drove 843 mi to see his grandparents. On the first day, they drove 483 mi. On the second day, how long did it take to reach Barry's grandparents' house if they averaged 60 mi/h?

english
im trying to say like based on other things we can assume that they will end u thisway... is there a word for that

english
is pre-analyzed a word? We have pre-analyzed how they would end up if they think they are in love from comparing to Tom and Daisy.

english
I was trying to say like because everything in the book that seems to shine ends up in a distater their realtionship will end the same way. gatspy party at his house, which was preety bright, ended in a distater because everyone got drunk. similarly, because jordan and nick ha...

english
this pargraph is based on the nvel the great gatspy. how do i make these two sentneces more advanced. Similarly, it’s obvious like the rest of the novel that because Jordan and Nick have bright opinions about each other their relationship will eventually turns into darkne...

chemistry
1)you have a glass of pure water. are chemical reactions occurring in the water ?if so, what are they?if not explain why not. 2)while investigation the effects of acid rain in your area, you discover a lake that is surprisingly resistant to changes in pH caused by acid rain. e...

chemistry
Rust contains an iron-oxygen compound in which there are three oxygen atoms for each two iron atoms. In this compound, the iron to oxygen mass ratio is 2.325:1. Another compound of iron and oxygen contains these elements in the ratio of 2.616:1. What is the ratio of iron to ox...

chem
Can you please explain yourself Dr Bob 222.

english
Sorry! This is based on the poem "crossing the bar" by alfred tynsson. So the poem talks about a passenger on a boat crossing the bar. the passenger decribes things that are out of nature, like the waves moving and not moving at the sametime. the readers clearly unde...

english
how can i make this sentece better If so the boat figuratively seems to be the transportation to heaven. Given that death is experienced alone the next line, “one clear call for me”, endorses that the poet was depicting the scene of passing away and entering heaven.

business
A company has the following alternatives on some real estate that it needs for its new plant. It can lease the facility for $10,000 a month for 15 years, or it can buy the facility now for $800,000. The company’s weighted average cost of capital is 12% and payments are ma...

chemistry
Air consits of 21% oxygen, 78% nitrogen and 1% argon by volume. Calculate the partial pressures in Pa if total pressure is 1 atm. My teacher just converted 1atm in pa and then did 21% of that for oxygen etc etc. Can you explain why she did this, is volume directly proportional...

physics
what does it mean

physics
the change in velocity of a car that starts at rest and has a final velocity of 20m/s north

math
what is the degree of the x^5+x^2+x? and can anybody explain how to get the degree thank you

math
is x^5+x^2+x a polynomial ? explain why or why not

english
i got some good reasons from that website thank you for the help

english
these are negative reasons am searching for some positive ones for my essay :)

english
explain one reason that teaching fables to children is positive

English
Does Education have to be in caps in the following sentence: Wendy is pursuing a position in the Education field or Wendy is pursuing a position in the education field or Wendy is pursuing a position in education? If I am correct education should not be capitalized same as bac...

physics
the velocity of sound in air is 332m/s. if the unit of length is km and the unit of time is hour,what is the value of velocity?

Calculus
Yay!! Thank you both very much! It worked.

Calculus
The computer homework program says that is incorrect. Any other suggestions?

Calculus
Decide whether to integrate with respect to x or y. Find the area of the region. y=e^2x y=e^6x x=1 I have no idea what to do

math
Your answer should be (7-2y)(7+2y). If you multiply the first equation (7-2y)(7-2y) it would equal 49-14y-14y+4y^2. After simplifying it would equal 49-28y+4y^2. The second option multiplies out to 49+14y-14y-4y^2. The 14y's cancel each other. That leaves 49-4y^2. Hope tha...

Statistics
Suppose we have a population of scores with a mean (ì) of 200 and a standard deviation (ó) of 10. Assume that the distribution is normal. Provide answers to the following questions: What score would cut off the top 5 percent of scores? What score would cut off th...

health
hi there i realy need a script about noise pollution plz help me.thanks :D

Chem
A line in the hydrogen atomic line spectrum has a wavelength of 486 nm. What is the frequency of this light (in Hz)?

science
Two masses traveling in the same direction (m1=10kg u1=9ms^-1) (m2=8kg u2=4ms^-1). They both collide and move off together. What is their resultant velocity after collision. The loss of kinetic energy.

statistics
The passing rate for the boards is 34%. If 70 people take the boards, the probability that 30 of them will pass the exam is?

math am i right?
Solve (x+18)(x-18)(x+12)>0 Solution set is {x|-8,-12} Is this correct?

Civics
Texas and Ohio support it, however, I look for West Virginia to be added to the list because all boarder one-another.

psy 240
are neurons there throughout your entire body or just in the brain?

Algebra 2
Simplify: 8rs^2/5s^4 times (2r^3)^-1

Algebra 2
Factor: 10ab^3 – 5a^3b^2

algebra II
The side of a square is (x – 4). What is the area in terms of x?

Principles of Accounting I
Deliverable Length: 5-10 PowerPoint slides / can include an Excel file for financial analysis Details: Choose a public company in the food industry. Analyze the financial statements and assess whether the financial performance has improved or declined year-over-year. Analysis ...

Algebra 1
If g(x) = x^2+2x, find g(a - 1)

Algebra 1
Solve each equation. t(t - 12)+t(t+2)+25=2t(t - 5) - 15

Algebra 1
solve each equation x(x - 3) - x(x+4)=17x - 23

Algebra 1
Solve each equation. p(p+2)+3p=p(p - 3)

Algebra 1
Solve Each equation. 7(x - 12)=13+5(3x - 4)

Algebra 1
The graphs of 3x+2y=1, y=2, and 3x-4y=-29 contain the sides of a triangle. Find the measure of the area of the triangle.

Biology
Good day! I actually just have one question and I have been looking at links and everything, but i still dont understand>>>>... "What abiotic factors seem to be the greatest determinants of terrestrial biome locations?"

psy
How do the evolutionary principles of “natural selection” and “fitness” help to shape the overall behavior and development of the human species? According to the principles of evolution, what are some behaviors that might be “more likely” or “...

Maths C
I need to compare and contrast Weddle's Rule and Simpson's rule and outline a distinguishing difference between them. I understand Simpson's Rule but I am finding it difficult to obtain clear information about Weddle's rule.

PHYSICS
The three ropes in the figure are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls as shown, with T3 = 90 N and θ = 35°. What are T1 and T2, the magnitudes of the tension forces in the first two ropes?

chemistry
write a neutral specie which is isoelectronic chlorides.

math
√3:(x)*√4:(6x) as a single radical expression. 216x?

Algebra
√(y+4)-4=1 Y = or no solution I keep coming back to no solution but am wondering if I am confusing myself Please check Thank you

Algebra
a boy 4 ft tall casts a shadow 6 ft long. he stands next to a monument that has a 52 ft long shadow. how tall is the monument?

Accounting 2
At the beginning of the year, we purchased a generator for $ 56,000. We expect then generator to have a useful life of 12 years, or 60,000 hours. The residual value of the generator at the end of its life is expected to be $ 5,600. We actually used the generator 3,500 hours in...

Math
Assume that the allowance account has a debit balance of $7,000 at the end of the year, before adjustments. If the estimate of uncollectible accounts based on aging the receivables is $10,000, the amount of the adjusting entry for uncollectible accounts would be:

accounting
balance of the accounts with normal credit balance Joseph - capital $25,400 Accounts payable $12,000 Total $37,400

biology
difference between gaseous exchange, respiration and breathing

math
If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2 – 10t + 330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest hundr...

algebra
Solve the system of equations by graphing. Then classify the system. 2x-y=7 2x+3y=3

Algebra
townsville had a population of 90000 in 1998. the population is growing at an annuall rate of 1.5%. Predict to the nearest whole number the population of Townsville by the year 2010.

Algebra plz check
Find all numbers for which the rational expression is undefined -12/5y. The rational expression is defined for every real number is this correct?

Algebra
The Office Jet printer can copy Janet's dissertation in 20 min. The Laser Jet printer can copy the same documents in 12 min. If the two machines work together, how long would they take to copy the dissertation? is 1.25 right?

physics
A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.00 m/s, and the second person is initi...

physics
A 69.0 kg person throws a 0.0410 kg snowball forward with a ground speed of 35.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.00 m/s, and the second person is initi...

biology
1. Record your observations of the roots of the bean and radish plants in the appropriate data chart. Be sure to include a sketch of each plant’s roots. Answer: Data Chart: Bean Plant Nodules present? Number of nodules Number of pink nodules Number of green nodules Sketch...

physics
A charge of 4x10^(-3) coulombs exerts a force of 2,880 Nt on charge q2 at a distance of 0.461 m. The size of q2 is most nearly____ A- 0.017 mC B- 0.032 mC C- o.32 mC D- 3.2 mC E- 0.025 uC F- 0.050 uC g- 2.17 C

management
what is the four elements of financial management.

math
Can one cake be split into portions of 1/3; 3/9; and 8/15? why or why not?

math
Can one cake be split into portions of 1/3; 3/9; and 8/15 or why not?

music
How to set a tune?

chemistry
What are the effects on chemical equilibrium of following; Temperature , Concentration and Pressure.

physics
a man weighing 500N runs up a staircase half a minute he rise up by 4m. a.what work did he do? b.what was his power?

algebra
From a base elevation of 6600ft, a mountain peak in Colorado rises to summit elevation of 14,545ft over a horizontal distance of 15,839ft. The grade of the peak is blank%

algebra
From a base elevation of 6600ft, a mountain peak in Colorado rises to summit elevation of 14,545ft over a horizontal distance of 15,839ft. The grade of the peak is blank%

science
I'm in 5th grade and I'm doing a science project on if seawater can be desalted by freezing... I tested three cups of seawater, each with different times in the freezer.. I have my control which is the seawater at room temperature... What do I chart on my bar graph... ...

math am i right?
the polynomial 0.041h - 0.018a - 2.69 can be used to estimate the lung capacity, in liters, of a female with height h, in centimeters, and age a. find the lung capacity of a 60 year old women who is 190 centimeters tall 9.04 liters

algebra
A car rents for $40 per day plus 20 cents per mile. You are on a daily budget nof $92. What mileage will allow you to stay within your budget?

algebra
The formula R=-0.075 t 3.85 can be used to predict the world record in the 1500 meter run, t years after 1930.Determine an inequality that identifies the years in which the world record will be less than 3.1 minutes.

math
1/2x+1/3x+1/4x+1/5x=77 whats x?

teacher aide
Then it has to be withdrawal, because it said that depression, antisocial behavior, violence, lethargy and the inability to comcentrate. So I'm thinking withdrawl.

teacher aide
Behavior

teacher aide
Please tell me if I have this one right A common symptom of a behavior disorder is A spina bifida B amblyopia C tardiness D withdrawal I'm torn between two of them. I think its A I'm I right.

teacher aide
In a regular school setting, learning challenged children are A always placed in classes with the mentally retarded B usually determined to be below average in intelligence C usually taught best in a resource room D never allowed to exert themselves in sports activities I'...

social studies
why would women want to use the declaration of independence as a source of their own declaration?

statistics
Mean=9 Variance=792 Standard Deviation=28.14

physics
It is well known that bullets and other missiles fired at Superman simply bounce off his chest. Suppose that a gangster sprays Superman's chest with 8 g bullets at the rate of 105 bullets/min, the speed of each bullet being 450 m/s. Suppose too that the bullets rebound str...

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