Sunday

April 20, 2014

April 20, 2014

Total # Posts: 68,202

**Algebra 1 Explanation (Anyone, please!)**

Reiny's method is fine, but the "standard" method is like this: Find the vertex, which is the highest or lowest point of the parabola. Use -b/2a first. y = ax^2 + bx + c y = x^2 - 2x - 3 2/2 = 1, axis of symmetry. y = 1^2 - 2(1) - 3 y = 1 - 2 - 3 y = -4 Vertex: (...

**Grammar**

That's why some writers don't like the dashes. It can make a sentence really long without having to use standard punctuation (commas, colons, etc).

**math**

Compute the amount of interest earned in the following simple interest problem. A deposit of $8,000 at 9.5% for 120 days.

**math**

Zeller, Inc., has 60,000 shares of stock outstanding. Zeller declares a dividend of $580,000. What is the dividend per share?

**math**

Which of the following situations is an example of a linear function?

**math**

The account balance on April 1st is $50.51. On April 15th a payment of $15.00 is made. On April 25th a purchase of $19.27 is made. The annual rate is 18%. What is the finance charge using the previous balance method? What is the new balance?

**Precalculus**

1. Consider the curve y=x^2. a. write down (dy)/(dx) My answer: 2x The point P(3,9) lies on the curve y=x^2. b. Find the gradient of the tangent to the curve at P. My answer: 2*3=6 c. Find the equation of the normal to the curve at P. Give your answer in the form y=mx+c. My an...

**math**

Chris Shopper received a $800 discount loan to purchase a washer and dryer. The loan was offered at 10% for 120 days. What are the proceeds?

**calculus**

false

**c**

Yes, B.

**HELP!**

btw I took honors biology in 8th grade and this year I'm taking honors earth science. Usually you take honors chem at a sophomore if your an honors student but teachers can recommend you to AP.

**social studies**

How do the words dialect and heritage help understand European culture?

**math**

tameka draws a line that would cut a square in half. she says makes 2 smaller squares. is tameka correct? explain

**Physics**

Magnification=f/f-do m=6/6-2 m=1.5

**Physics**

A magnifying glass (a positive lens) with a focal length of +6 cm is placed 2 cm above a page of print. What is the magnification of this image?

**Math**

(6x4 – 3x + 5) – (3x4 + 4x3 – 6x2 + 1)

**M a t h**

A small plant manufactures riding lawn mowers. The plant has fixed cost (leases, insurance, etc.) of $48,000 per day and variable cost (labor, materials, etc.) of $1,400 per unit produced. The mowers are sold for $1,800 each. So the cost and revenue equations are y= 48,000 + 1...

**Social Studies**

I am the Star Reporter who is going to visit George Washington at his home at Mount Vernon during the years of 1759-1774. I am interviewing him about his political and personal views, activities, goals, and predictions. Develop 10 questions to ask President Washington. 1. What...

**trigonometry**

An angle measuring (468n)° is in standard position. For which value of n will the terminal side fall along the negative portion of the x-axis

**physics**

A hammer with 10 J of kinetic energy hits a nail and pushes it 5.0 mm into a plank. Both the hammer and nail come to rest after the collision. What is the average force that acts on the nail while it moves the 5.0 mm?

**physics**

The drawing shows the top view of two doors. The doors are uniform and identical. Door A rotates about an axis through its left edge, and door B rotates about an axis through its center. The same force is applied perpendicular to each door at its right edge, and the force rema...

**Radioactivity**

Thank u so much :)

**Radioactivity**

The mass number of an atom undergoing beta decay doesn't change. However the daughter nucleus is a different element than the parent. Explain how this is possible

**Science radioactivity**

Thanks a ton!!!!!

**Science radioactivity **

why are alpha and beta radiation referred to as particles while gamma radiation is referred to as rays?

**statistics**

YOU ARE DOOMED!!

**M A T H**

A small plant manufactures riding lawn mowers. The plant has fixed cost (leases, insurance, etc.) of $48,000 per day and variable cost (labor, materials, etc.) of $1,400 per unit produced. The mowers are sold for $1,800 each. So the cost and revenue equations are y= 48,000 + 1...

**physics 1**

A person is sitting with one leg outstretched and stationary, so that it makes an angle of 30.0° with the horizontal, as the drawing indicates. The weight of the leg below the knee is 50.5 N, with the center of gravity located below the knee joint. The leg is being held in...

**Chemistry**

Zn(s)+2HCl(aq) ->ZnCl2(aq)+Hx(g) How many millilters of 2.50M HCl(aq) are required to react with 3.95 of Zn(s)?

**Math**

I did my math wrong, I dont know what I was thinking. Thanks for your help.

**Chemistry **

Can alcohol dissolve any of these? PCl5 NaNO3 NH3 KOH KCl

**american history**

under America's second party system, the whigs stood for?

**LA**

3. In basketball, the most elite athletes would (1 point) be professional. become coaches. fail to make the team. have fun. 4. Read the sentence below. Based on the context clues in the sentence, which is the best definition for the italicized multiple-meaning word? The lawyer...

**science**

If you were riding on a train, which of the following would look as if it is not moving? the conductor walking by you a building you are passing a flying bird<---- a person sitting next to you Which of the following reference points would allow you to observe the speed of a...

**Help**

A homeowner determined that he used 114 gallons of oil every month to heat his home during the winter. This information would be considered part of his _______________________________.

**Math help**

Elizabeth bought 3-inch tomato plants at home depot. Each week after she bought the plants she measured their height. she recorded the data in the table below. Time(wks) 0 1 2 3 4 Height of tomato plants(in.)3 5 7 9 11 what is the Independent variable? What is the dependent va...

**Math**

Jackson jogged a total of 8 9/10 miles this week. His friends Aaron and Tanya jogged 4 3/4 miles and 9 2/5 miles respectively. How many more miles did Aaron and Tanya jog than Jackson?

**LA**

9. B 10.C 11. D

**LA**

In all of recent American history, there has been no worse river flooding than what occurred on the Mississippi River between late June and the middle of August in 1993. Record flooding affected communities from Minnesota to Missouri. Iowa and Illinois joined those states as ...

**Science**

A homeowner determined that he used 114 gallons of oil every month to heat his home during the winter. This information would be considered part of his _______________________________. Idk this one please help!!!

**SCIENCE**

To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of ____________________ polluti...

**algebra 1 question pls help!!!**

Fraction as a percent 4/5

**algebra 1 question pls help!!!**

Welcome!

**algebra 1 question pls help!!!**

mean 23.625 median 24 mode 25

**Science**

In the ocean, there are areas where there are very few living things. _________________________ is the term that describes when this happens to a natural area.

**Science**

what do you call it when there are few living things in an area? Extinguish?

**Chemistry Equilibrium**

For the reaction NO2(g) + NO(g) N2O(g) + O2(g) Kc = 0.914. Equal amounts of NO and NO2 are to be placed into a 5.00 L container until the N2O concentration at equilibrium is 0.0446 M. How many moles each of NO and NO2 must be placed into the container?

**Chemistry Equilibrium**

At 200 °C, Kc = 1.4 x 10-10 for the reaction N2O(g) + NO2(g) 3NO(g) If 0.174 mol of N2O and 0.337 mol NO2 are placed in a 4.00 L container, what would the NO concentration be if this equilibrium were established?

**math**

Define a new class Assistant that represent a faculty member who works a certain number of hours each month. In this case, the salary is computed by multiplying the working hours by the hourly payment rate. Create a new object of class Assistant and add it to the list...

**Science**

Problem: What are parts of a cell and how are animal cells different from plant cells? Hypothesis: Can someone help me get a hypothesis?

**3 questions~~~**

1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images only Educational material is no longer ...

**math**

Tim Worker buys a new sofa for $629.95. He pays 25% down and takes an installment loan to complete the purchase. He makes 12 payments which include his principal and a $60.00 finance charge. What is the APR on his loan to the nearest tenth? The down payment is? The amount fina...

**math**

Find the interest due to the bank on a loan of $1,000 at 7.5% for 280 days.

**math**

Sam decides to buy 100 shares of ABC company. They cost $26.25 a share. The commission is 5% of the total price. What is Sam's total cost?

**Math**

Integrate (5x^2 + 3x - 2)/(x^3 + 2x^2)

**Help!**

1. renewable 2. hydroelectric 3. non point 4. coal

**Help!**

Geothermal power would be classified as a(n) _____________________ resource because its supply will not run out. An example of a renewable and inexhaustible resource that requires the construction of dams is _________________________ energy. To solve the problem of a polluted ...

**Ed tech- Plz, plz help**

express the meaning of (the writer or speaker or something written or spoken) using different words, esp. to achieve greater clarity. so..C?

**Ed tech- Plz, plz help**

1.? I dunno. B? 2.A

**Ed tech- Plz, plz help**

can you check my answers? 1. A 2.? 3. B 4.A,B

**Ed tech- Plz, plz help**

The Second Industrial Revolution was not just marked by new inventions. New business practices were invented that transformed America’s economy. Between 1869–1910, the value of American manufacturing rose from $3 billion to $13 billion. The steel industry produced j...

**Statisttic**

If 3 cards are drawn, without replacement, from a deck of 52 cards, the probability of getting 3 7's is [x]. Round to 5 decimal places.

**Science help!!!!**

A______________________ is a tool used to capture the energy in sunlight. Recycling aluminum cans and taking shorter showers are two ways to practice the ________________________ of natural resources. Some plastics are made from corn. These plastics are biodegradable. This mea...

**English**

Which literary term best matches this? A group of four rhyming lines.

**math**

There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. What is the probability of Jamie picking two blue marbles

**math**

At a boutique,an evening gown is marked at a profit of 40% on the cost price. It is sold in a sale at 20% discount. (a)Find the actual profit as a percentage of the coast price. (b)If a customer bought it for $448, find the actual profit

**math**

A shopkeeper sells a mattress and makes a profit of 10% on the cost price. If he had sold the mattress for $150 less,he would have incurred a loss of 40% on the cost price. Find the cost price of the mattress.

**Astrophysics**

The Earth formed at a redshift of z∼0.53. That means that when our world was young, the universe was quite a bit smaller than it is today. The nearest galaxies to our own are around 10 kpc (kilo-parsecs) in size, lie at a distance of around 1 Mpc from us (Mega-parsecs), ...

**microeconomics**

if nancy pelosi declared that clay firepits are causing global warming, demand for firepits shrink substantially in the U.S, especially in California. Firepits prices fall worldwide to 65 dollars. Now the manager of redstone should produce how many units?

**microeconomics**

if redstone clayworks company want to minimize their average total cost how many units should they produce?

**Algebra**

How do you simplify this? -16^(1/4) Someone showed me like this: (-1)(16^(1/4))=(-1)(2)=-2 But others said ... -16^(1/2)= 4i 4i^(1/2) or the sqrt of 4i=sqrt of 4 times sqrt of i Final answer: 2 times sqrt of i What is the correct answer and what exactly do you do??

**algebra**

4(x-6)-7x

**Math**

how many 5's are in 6

**Science help!?**

. If a kestrel eats a mouse that eats grass, the kestrel is a (1 point)producer. second-level consumer. first-level consumer. decomposer. 2. Which of the following best explains why a species of lizard is able to live in the desert but not in tundra regions? (1 point)High ave...

**IB English**

IT IS END OF THIRD QUARTER AND MY IB ENGLISH GRADE IS A B!!!! MY GOAL WAS TO GET AN A BUT...... ****IF GET AN A ON THE FOURTH QUARTER, WILL MY GPA GO UP!!! I GOT A'S ON ALL OF THE OTHER CLASSES EXCEPT IB ENGLISH......... ***********SO WOULD MY GPA BUMP BACK UP IF I GET AN ...

**Science**

Problem: What are parts of a cell and how are animal cells different from plant cells? Hypothesis: Can someone help me get a hypothesis?

**Physics**

A space probe is traveling in outer space with a momentum that has a magnitude of 7.84 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.29 x 106 N and a direction opposite to the probe's motion. I...

**chemistry**

Given that 4 NH3 + 5 O2 4 NO + 6 H2O, if 3.00 mol NH3 were made to react with excess of oxygen gas, the amount of H2O formed would be?

**Ap Chem**

Fe(s) + Cu2+(aq) Fe2+(aq) + Cu(s) If Ecell = 0.780 V and [Fe2+] = 1.0 M, what is [Cu2+]?

**math**

All of the 5th grade teachers and students from Almond went on a field trip to an archaeology museum. Tickets were $8.50 each for teachers and $2.00 each for students, and the group paid $29.00 in total. A few weeks later, the same group visited a natural history museum where ...

**math**

The Standard blend of coffee uses 4 oz arabica beans and 12 oz of robusta beans per package; the Deluxe blend uses 10 oz of arabica beans and 6 oz of robusta beans per package. The merchant has 80 lbs. of arabica beans and 90 lbs. of robusta beans available. Find a system of i...

**physics**

Horizontal rays of red light (λ = 660 nm, in vacuum) and violet light (λ = 410 nm, in vacuum) are incident on the flint-glass prism shown in the drawing. The indices of refraction for the red and violet light are nred = 1.662 and nviolet = 1.698. The prism is surroun...

**French**

Is that supposed to be "et" or "est?"

**Physics**

convert 220 degree into radians show work.

**chemistry**

You have been asked to do a dilution of a copper sulfate solution. The solution to be diluted is 2.88 M copper sulfate. What volume of the 2.88 M copper sulfate is required to make 250 mL of 1.03 M copper sulfate solution?

**math**

Thanks for the hint :D

**math**

Shelly is making tomato soup. A 1-pint can of tomato juice costs $0.90. A 1-quart can of tomato juice costs $1.65. Which is a better buy for one quart of juice? How much money will she save?

**algebra**

Y= -3/8x + 10

**math**

The map of the school has a scale of half inch 5 yards the distance from the library to the cafeteria is one and a half inches on the map how far is the library from the cafeteria

**math**

Alberto studied the distribution of two sets of data. He found that both sets had the same greatest value and the same center. Alberto says that this does not mean the data distributions are the same. Is he correct? Explain. I really need help.

**math**

Thank you

**math**

Write an inequality using subtraction and the variable x so that solutions to the inequality include x = 3,5,7, and 9. Please help me.

**physics**

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. Only 98% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. No light passes through the second sheet. What angle does the ...

**math**

Thanks

**math**

How do you know that any value for y will be a solution to the inequality y + 3.9 > y?

**physics**

The intensity of the light that reaches the photocell in the figure below is 104.6 W/m2, when θ = 26°. What would be the intensity reaching the photocell if the analyzer were removed from the setup, everything else remaining the same?

**SS**

Is West Bank and Gaza oil rich? I think no.

**English**

If this is a true/false question, the answer looks pretty obvious to me.

**Chemistry Equilibrium **

At 500 ºC, the decomposition of water into hydrogen and oxygen, 2H2O(g) 2H2(g) + O2(g) has Kc = 6.0 × 10-28. What are the concentrations of H2 and O2 that are present at equilibrium in a 2.00 L reaction vessel at this temperature if the container originally held 0.0...

**math**

wheres the answer

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