Thursday

July 31, 2014

July 31, 2014

Total # Posts: 168

**MATH HELP NOW**

We are doing solving polynomials using the zero factor property and here is the question: Marie has a rectangular board 18 inches by 23 inches around which she wants to put a uniform border of shells. If she has enough shells for a border whose area is 282 square inches, deter...

**Chemisrty 1**

If ou knew the density of an unknown metal, do you think you could accurately determine the identity of the metal based on that property?

**physics**

Assuming biological substances are 90% water and the density of water is 1000 kg/meter cubed, estimate the mass of a fly, which can be approximated by a cylinder 4 mm long and 2 mm in diameter (volume (length*pi*radius squared) the answer is 1.131 X10 to the negative 5th power...

**physics**

yes I meant the density was 1000 kg/meter cubed. but when I multiply the volume of the cylinder (12.56) by the density of water, (1000), i get 12560. the answer is supposed to be 1.131 X10 to the negative 5th power

**physics**

Assuming biological substances are 90% water and the density of water is 100 kg/meter cubed, estimate the mass of a fly, which can be approximated by a cylinder 4 mm long and 2 mm in diameter (volume (length*pi*radius squared)

**Algebra**

Juan is 8 years older than his sister Rosa.One day, Juan tells Rosa he is twice her age, but will only be twice her age for one year.To figure out the ages of Juan and Rosa you must first identify the variables. What are the variables in this problem?

**science**

Is color a property or a mass?

**english**

The first one.

**chemistry**

Cyanic

**Help Math!**

Battery Power Problem. A certain type of thermal battery for an airplane navigation device backup power has a mean life of 300 hours with a standard deviation of 15hours. What proportion of these batteries can be expected to have lives of 322 hours or less? Assume a normal dis...

**Chemistry**

Calculate the freezing- and boiling-point changes for a solution containing 12.0 g of naphthalene (C10H8) in 50.0 g of benzene.

**MATH**

3/8

**math**

I need a sketch and label of a figure that has an area of 47 sq. cm.

**geometry**

24

**statistics**

what is the actual base of the sears tower

**chemistry**

Choose any two temperatures and corresponding vapor pressures in the table given, and use those values to calculate change in vaporization for dichloromethane (in kj/mol). T(K) (Pvap (mmHg) 263 80.1 273 133.6 283 213.3 293 329.6 303 495.4 313 724.4

**chemistry**

hoose any two temperatures and corresponding vapor pressures in the table given, and use those values to calculate for dichloromethane (in ). () () 263 80.1 273 133.6 283 213.3 293 329.6 303 495.4 313 724.4

**elementary**

correct spelling of the following: two (sister's, sisters') bicycles??

**Algebra**

How would i solve: 1/6(12-6x)= 5(x+4)

**Spanish 1**

How would I complete this phrase. Nosotros BLANK americanos. BLANK alumnos en una escuela secundaria. BLANK alumnos en la escuela martin luther king.

**4th Grade Math**

23 x 17 20 x 10 = 200 3 x 7 x = 21 7 x 20 = 140 3 x 10 = 30 200+140+30+21 = 391 23 x 17 = 391

**Statistics**

For df = 25, determine the value of A that corresponds to each of the following probabilites: a. P(t >- A)= 0.025 b. P(t <- A)= 0.10 c. P(-A <- t <- A)=0.99

**Statistics**

From past experience, an airline has found the luggage weight for individual air travelers on its trans-Atlantic route to have a mean of 80 pounds and a standard deviation of 20 pounds. The plane is consistently fully booked and holds 100 passengers. The pilot insists on loadi...

**6th grade math**

cut each piece into 3s

**physics**

A jumbo jet must reach a speed of 360 km/h on the runway for takeoff. What is the least constant acceleration needed for takeoff from a 1.80 km runway?

**chemistry**

how many grams of solid NaOH are required to prepare 200.0 mL of a .050 M solution?

**Biochemistry**

what molar mass are you supposed to find?

**7th grade math**

got it thank you

**7th grade math**

how did you get the answer

**7th grade math**

alan,bonnie and calvinshared 153 marbles alan gets 3 times as miny as bonnie and calvin gets 6 more than alan .how miny marbles does each person get

**pre-calc**

for f(x)=2^x is f(x) an increasing function.?

**pre-calc**

for f(x)=2^x is f(x) an increasing function.?

**literature**

100% once again! Thanks too ya'll :)

**math**

its the end of the lion

**math**

The average of x and y is 5 and the average of x,y, and z is 8. What is the value of z? a. 19 b. 14 c. 13 D. 11 e. 3 I know that the average of 7 and 3 is 5 (if 7 and 3 are x and y) but I don't know what z is.

**7th grade**

WHAT DOES CONTRASTING ELEMENTS MEAN?

**geometry**

the intersection of two line is a ____?

**Literature-Poetry**

Ashley is right! And so is Country girl! 100% the only one i missed was 5 and thats because I accidentally put A instead of C

**math**

Thank you Paula :)

**math**

I was just thinking maybe I didn't state the question correctly. I wasn't trying to irritate anyone and I don't appreciate being scolded for that.

**math**

I'm sorry to keep asking, but I really need help finding this windows. Usually I put the x and y values as 10 and -10, but with the numbers I don't know how to do it. Is there any way they can be automatically put into the calculator?

**math**

Can someone please help me with my previous question? I'm not sure what window to use for the equation I previously wrote.

**math**

How would I find the right window to graph a parabola in? The equation is -8874.6x+113537.2 My teacher said that if the parabola should be tight. But I can't seem to graph this equation. I don't know window I should use on my graphic calculator for this equation.

**Lit**

I have read the book, and I wasn't sure. In the end Henry is a man, so wouldn't the author think war is good? How does the author say it's bad?

**Lit**

Using only Stephen Crane's novel, the Red Badge of Courage, explain how he felt about war. Didn't he like it because it was glorious and it made boys turn into men?

**Social Studies**

I am working on the same crossword, but we dont have a book only notes. I found that colonists sent to the americas by judges were debtors, and he sent "royal" governor. But i also cant find the sole right to trade in an area, a colony leader representatives who made...

**Math**

28

**science**

if yoy had 1.5 liters of water, how many millilters woud you have?

**Economics**

Do all firms in all market structures have anything in common? I think not. They all consist of buyers and sellers. In Principals of Microeconomics courses, economists make several general economic assumptions (perhaps incorrectly I might add) about firms and the behavior of f...

**Economic**

Suppose that labor is the only input used by a perfectly competitive firm that can hire workers for $50 per day. The firm’s production function is as follows: Days of Labor/Units of Output: 0/0, 1/7, 2/13, 3/19, 4/25, 5/28, 6/29, 7/29 c. Compute the demand schedule showin...

**Economics**

6. Show the effect of each of the following events on the market for labor in the computer manufacturing industry. Use graphs. a. Congress buys personal computers for all American college students. Wouldn't the demand curve shift to the right while the supply curve stays t...

**Economics**

3. Suppose the Clean Springs Water Company has a monopoly on bottled water sales in California. If the price of tap water increases, what is the change in Clean Springs' profit-maximizing level of output, price, and profit? Explain in words and with a graph. I would think ...

**Music**

I heard that "Itsbynne Reel" features stylistic elements of rock and jazz (especially bebop), but I don't recall that this song had bebop elements, can anyone clarify? Yes, according to this article, bebop http://www.scaruffi.com/history/jazz17e.html "Philad...

**Music**

Doesn't Louis Armstrong begins "West End Blues" with a stop time? You might try browsing these 2 links: http://www.google.com/search?as_q=Armstrong+%22stop+time%22+%22West+End+Blues%22+starts&hl=en&num=10&btnG=Google+Search&as_epq=&as_oq=&as_eq=&lr=&as_ft=i&as_fi...

**Economics**

10. An industry currently has 100 firms, all of which have fixed cost of $16 and average variable cost as follows: Quantity / Average variable cost: (1/$1),(2,$2), (3,$3), (4,$4), (5,$5), and (6,$6) b. The price is currently $10. What is the total quantity supplied in the mark...

**Economic**

How is income distribution affected in monopolies? The market for fertilizer is perfectly competitive. Firms in the market are producing output, but they are currently making economic losses. a. How does the price of fertilizer compare to the average total cost, the average va...

**History**

What is western civilization? That usually refers to the civilization of Europe, and lands originally colonized by Europeans, such as the Americas and Australia.

**Music**

Did the Phantom of the Opera have a traditional orchestra without amplification? I thought that the Phantom of the Opera didn't ave a traditional orchestra without amplification is this correct? Did the Phantom of the Opera used successfully opera voices and more tradition...

**Economics**

Consider total cost and total revenue given in the following: (Quantity/Total Cost/Total Revenue): (0/8/0), (1/9/8), (2/10/16), (3/11/24), (4/13/32), (5/19/40), (6/27/48), (7/37/56) Can you tell whether this firm is in a competitive industry? If so, can you tell whether the in...

**Music**

Did Quincy Jones begin his career playing trumpet with Lionel Hampton? Yes. reference: http://www.rhino.com/store/ProductDetail.lasso?Number=74363 Thanks for the information.

**Economics**

1. Your roommate's long hours in chem lab finally paid off--she discovered a secret formula that lets people do an hour's worth of studying in 5 minutes. So far, she's sold 200 doses and faces the following average-total-cost schedule: Q = 199 & ATC = $199 Q = 200 ...

**Economics**

The chapter states that the elderly population in the United States is growing more rapidly than the total population. In particular, the number of workers is rising slowly, while the number of retirees is rising quickly. Concerned about the future of Social Security, some mem...

**Economics**

The chapter states that the elderly population in the United States is growing more rapidly than the total population. In particular, the number of workers is rising slowly, while the number of retirees is rising quickly. Concerned about the future of Social Security, some mem...

**Music**

What are rock ensembles? I went searching around the net to find out and all i came up with was the names of some really good rock bands. I'll try find out something useful but it might take a while =( An "ensemble" is a small group of musicians playing the same ...

**niagara falls**

what are the Physical Featuers of Niagara Falls? The important features are the height of the drop, the widths of the several sections, and the water flow rate. You can find data on these easily with a search engine. http://wonderclub.com/WorldWonders/NiagaraHistory.html The r...

**History**

Who is King Tut's father and where is his tomb. http://www.kingtutone.com/tutankhamun/life/ Fourth paragraph =)

**civic**

homework

**mathh (unit rate)**

i hate math whats the ratio of 270 mi in 5 h as a unit rate ??????