Wednesday

January 18, 2017
Total # Posts: 67

**math**

A rational function is defined as this: $$ f(X) = \frac{a_0 + a_1X + a_2x^2 + \cdots a_n X^n } {b_0 + b_1X + b_2 X^2 + \cdots + b_mX^M} $$ Which allowing complex numbers can be factored to this: $$ f(X) = \frac{a (X - \alpha_1)^{e_1} (X - \alpha_2)^{e_2} \cdots (X - \alpha_r...

*December 4, 2016*

**Statistics**

In a simple random sample of 80 patients that go to a certain dentist, 9 patients had their teeth whitened. which interval is the 95% confidence interval for the percent of all the dentist's patients who had their teeth whitened? (4.4, 18.2) (8.4, 14.2) (5.5, 17.1) (7.8, ...

*May 5, 2016*

**math**

Determine the vertex and the axis of symmetry for the function below: y = -648-05-01-00-00_files/i0110000.jpgx2 + 6x + 6

*February 24, 2016*

**government**

Imagine that you're a member of the Virginia House of Burgesses. You've submitted a proposal for a law that requires colonial inspectors to place grades on different qualities of harvested tobacco. The law passes, but you know it won't go into effect until it'...

*December 30, 2015*

**Science**

A vitamin C tablet was dissolved in 50.0 mL of water. The resulting solution was titrated to the equivalence point with 28.5 mL of 0.100 M I3− solution. What is the starting mass of the tablet assuming the tablet is 100% vitamin C? I found the moles in I3- to be .00285. ...

*September 21, 2015*

**Science**

In the following total ionic equation which ions are spectator ions? 2 Na+ (aq) + 2 Cl−(aq) + Pb2+(aq) + 2 NO3−(aq) ¨ PbCl2 (s) + 2 Na+ (aq) + 2NO3− (aq) I think the answer is all of them because I DO NOT see any that cancel from one side to the ...

*September 20, 2015*

**physics**

A seesaw has a mass of 30 kg, a length of 3.0 m, and fulcrum beneath its midpoint. It is balanced when a 50-kg person sits on one end and a 65-kg person sits on the other end.Locate the center of mass of the seesaw (a distance from the 50-kg person)

*March 1, 2015*

**english**

Writers often make common errors by adding improper punctuation. Identify and explain the sentence structure error in the following sentence: Terrance has collected sand from all of the exotic islands he’s visited, his favorite sample is the green sand from Hawaii.

*December 9, 2014*

**Physics**

(II) Every few hundred years most of the planets line up on the same side of the Sun. Calculate the total force on the Earth due to Venus, Jupiter, and Saturn, assuming all four planets are in a line, Fig. 5–44. The masses are mV = 0.815 mE, mj = 318 mE, mSat = 95.1 mE, ...

*October 2, 2014*

**physics**

A flower pot is thrown out of a window with a horizontal velocity of 8 m/s. If the window is 1.5 m off the ground, how far from the window does it land?

*September 12, 2014*

**physics**

A soccer ball is kicked at an angle of 30° to the horizontal with an initial velocity of 16 m/s. How far does the soccer ball go?

*September 12, 2014*

**science**

calculate the concentration for the reaction of 0.25mole 0f sodium hydroxide NaOH and water H20 solution of 250cm^3. Provide the answer in cubuc decimeter

*September 16, 2013*

**college algebra**

Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y-intercept as the line given by 2y+3x=-4 (show work) I am stuck with this problem. Can you please show me how to do these types of equations? Thank you

*February 9, 2013*

**Physics**

A cylinder with a movable piston contains gas at a temperature of 27 degrees celsius, a volume of 1.50 meters cubed, and an absolute pressure of 0.200 X 10 to the fifth Pa. What will be its final temperature if the gas is compressed to 0.700 meters cubed and the absolute ...

*January 23, 2013*

**Calculus**

Find the local linearization of g(x)=sqrt 4x near x=2 use local linearization to estimate g(2.05) is your estimate too high or too low?

*December 21, 2012*

**Statistics**

The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) μ and standard deviation σ = 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5, but measurements on a random sample of 400 ...

*November 27, 2012*

**Statistics**

A simple random sample of 50 female 14-year-olds is selected. The sample mean height of the girls is found to be 62 inches. Assume the height of 14-year-old girls is normally distributed with a standard deviation of 5 inches. 1. Based on these data, a 95% confidence interval ...

*November 27, 2012*

**Math**

You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches long. How should you ...

*October 4, 2012*

**math**

Can a forest that is 9/10 acre be divided into an even number of plots that are 1/7 acre? Explain how you know?

*September 18, 2012*

**Science**

By how much does the total partition function (excluding electronic) increase when 20 m^3 of Neon at 1.00 atm and 300 K is allowed to expand by 0.0010% at constant temperature?

*May 10, 2012*

**Chemistry**

Calculate the translational partition function for Ar confined to a volume of 1000 cm^3 at 298 K. At what temperature will the translational partition function of Ne be identical to that of Ar at 298 K confined to the same volume?

*April 25, 2012*

**chemistry**

5.00 grams of hydrogen is found to diffuse through an opening in 20.00 minutes. under the same conditions, how many grams of carbon monoxide would diffuse through the same opening in 20.00 minutes of time?

*March 19, 2012*

**algebra**

35 in class 7 more girls than boys how manyh girls and how many boys

*February 9, 2012*

**geometry**

20. D

*December 14, 2011*

**Physical Science**

Thats right!!

*December 12, 2011*

**Physics!!!**

How much heat does it take to raise 1.0 kg of lead from 0 degree celsius to 90 degree celsius?

*December 12, 2011*

**Physics**

How much heat does it take to raise 1.0 kg of lead from 0 degree celsius to 90 degree celsius?

*December 11, 2011*

**Physics**

How much heat does it take to raise 1.0 kg of lead from 0 degree celsius to 90 degree celsius?

*December 11, 2011*

**Physics!**

so 1*90*90?

*December 11, 2011*

**Physics!**

How much heat does it take to raise 1.0 kg of lead from 0 degree celsius to 90 degree celsius?

*December 11, 2011*

**Physics**

How much heat does it take to raise 1.0kg of lead from 0 degree celsius to 90 degree celsius

*December 11, 2011*

**Physics**

Your car has been setting out in the hot summer sun all day. The metal hood, the glass windshield, and the fabric upolstry are all at 180 degrees farenheit. If you touch the hood with your hand it could be burned, if you touch the windshield it will be very hot, if you touch ...

*December 10, 2011*

**Science/Physics**

Your car has been setting out in the hot summer sun all day. The metal hood, the glass windshield, and the fabric upholstry are all at 180 degrees farenheit. If you touch the hood with your hand it could be burned, if you touch the windshield it will be very hot, if you touch ...

*December 9, 2011*

**Science/Physics**

Your car has been setting out in the hot summer sun all day. The metal hood, the glass windshield, and the fabric upholstry are all at 180 degrees farenheit. If you touch the hood with your hand it could be burned, if you touch the windshield it will be very hot, if you touch ...

*December 9, 2011*

**physics**

drwls. I thank you again whoever you are. i owe you ten fold! you really help me out more than you can imagine!

*December 7, 2011*

**physics**

A 220lb worker loses 8 pounds of sweat during the day. All of the sweat evaporates. How much heat will he lose through evaporation? (Hint. Convert all measures to metric)

*December 7, 2011*

**physics**

I am quite amazed. I appreciate your help!

*December 7, 2011*

**physics**

if you take a 1 liter bottle of water out of the refrigerator at just above 0 celsius., how much heat will it take to raise the water to 90 celsius, so you can make tea out of it.

*December 7, 2011*

**chemistry**

For which salt in each of the following groups will the solubility depend on pH? Pb(OH)2 PbCl2 could you explain too? thanks!

*December 4, 2011*

**calculus**

45.3434

*November 29, 2011*

**Physics**

A diver in Acapulco jumps off a 150 ft cliff. His forward motion is 10 feet per second. The base of the cliff at the waters edge extends 38 feet beyound the top edge of the cliff. Will the diver land in the water?

*October 26, 2011*

**MAT 7th GRADE**

2.-39

*October 26, 2011*

**Physics**

A diver in Acapulco jumps off a 150 ft cliff. His forward motion is 10 feet per second. The base of the cliff at the waters edge extends 38 feet beyound the top edge of the cliff. Will the diver land in the water?

*October 25, 2011*

**Physics**

Thanks a lot you are a genius

*October 24, 2011*

**Physics**

a 10 foot long teeter-totter pivots in the middle. a 50 lb boy sits on one end. Where must a 100 lb boy sit to balance the beam?

*October 24, 2011*

**science**

What would be the effect on satellites now in orbit if the earth stopped rotating

*February 16, 2011*

**math**

How many ways can a person select four books, two CDs, and one DVD from ten books, twenty CDs, and five DVDs?

*February 12, 2011*

**math**

Evaluate the function f(x) = -x2 + 5 for x = 4

*February 11, 2011*

**Physics**

38 cm is the amplitude

*November 22, 2010*

**statistics**

Let x be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with sigma =2.3%. A random sample of 17 Australian bank stocks has a sample mean of x bar 7.74%. For the entire Australian stock market, the mean ...

*July 24, 2010*

**stats**

Let z be a random variable with a standard normal distribution, P(-1.9<=z<=2.1)

*July 24, 2010*

**statistics**

You draw two card from a standard deck of 52 cards and replace the first one before drawing the second. Find the probablity of drawing a 4 for the frist card and a 9 for the second card

*June 26, 2010*

**Christianity**

Okay so during and after the time of Jesus, it was okay for people to marry their relatives. People married their half sister or brother. Even in the 1500s royal families still married their relatives in England. So then how did the the law of not being able to marry close ...

*December 21, 2009*

**AP Physics**

your doctor's scale has arms on which weights slide to counter your weight. these weights are much lighter than you are. explain how this works. does this relate to stress/strain?

*October 29, 2009*

**physics - linear momentum with rockets**

A rocket of total mass 3180 kg is traveling in outer space with a velocity of 115 m/s. To alter its course by 35.0 degrees, its rockets can be fired briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 1750 m/s, how much ...

*October 16, 2009*

**physics air bags**

The longer the impact time of an impulse, the smaller the force can be for the same momentum change, and hence the smaller the deformation of the object on which the force acts. On this basis, explain the value of air bags, which are intended to inflate during an automobile ...

*October 15, 2009*

**6th grade geography**

Where is the nearest river source to Bremerton, Washington?

*November 11, 2008*

**Science**

Have people gone near to the eaths crust?

*October 26, 2008*

**writing**

or english, i have to write a creative paper about the stuff weve gone over in class. we have read one flew over the cuckoos nest, and a few other short sotries. i was wondering what i should write about becasue im stumped. this ranges all the way from re writing a scene from ...

*October 19, 2008*

**Project Management**

That's what I was thinking. I just wasn't sure I understood the question correctly. Thank you very much.

*September 26, 2008*

**Project Management**

How can a project manager be sure that he or she has chosen the correct metrics to assess project performance?

*September 26, 2008*

**literary**

what is the literary term in this sentence. We will continue to work on grammar next week. I postponed our sceheduled test on subject-verb agreement until we got in a little more practice.

*September 24, 2008*

**social studies**

thanks so much.

*August 27, 2008*

**social studies**

need to unscramble this word, alshciirto pma it is a map,the definition is the map that shows information about past events and where they occurred.

*August 27, 2008*

**Chemistry**

I'm trying to find the dry gas pressure of H2 in mmHg. The barometric pressure is 765.3 mmHg, the vp of H20 is 23.76 mmHg and the gas collected was 25.6 mL. this is what i did. 765.3 mmHg - 23.76 mmHg - (25.6 Ml/13.6 mmHg) = 739.66 = 740 mmHg 93 sig figs). Then I have to ...

*September 26, 2007*

**science**

what are some of the advantages and disadvantages of genetic engineering? Since this is not my area of expertise, I searched Google under the key words "genetic engineering advantage" to get these possible sources: (Broken Link Removed) http://www.actionbioscience....

*January 26, 2007*

**science**

what are some of the advantages and disadvantages of genetic engineering? Genetic engineering allows thought to go into the design of genetic makeup, which is much faster than random mutation. Disadvantages? One has to try to explain it to the educationally disadvantaged.

*January 26, 2007*

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