Friday

September 19, 2014

September 19, 2014

Total # Posts: 41

**Calculus**

he rate of growth of the profit from an invention is approximated by P'(x)=xe^-x^2, where x represents time measured in years. The total profit in year 1 that the invention is in operation is $15,000. Find the total profit function. I know the answer is +.199 but how? I ...
*May 2, 2014*

**math**

Evaluate cot -220o Round your answer to the nearest hundredth. A. -1.31 B. 1.56 C. -1.19 D. -0.84
*March 19, 2014*

**physics**

An unknown material has a normal melting/freezing point of -20.4 °C, and the liquid phase has a specific heat capacity of 179 J/(kg C°). One-tenth of a kilogram of the solid at -20.4 °C is put into a 0.130-kg aluminum calorimeter cup that contains 0.198 kg of ...
*December 4, 2013*

**Physics **

How can you find the velocity of a bullet fired from a nerf gun the second it leaves the gun, if all you have is the angle it was shot at, and how far it traveled? (All in degrees) 0 degrees=2.54m 10=6.24m 30=6.54m 45=6.58m 60=1.6m 80=.94m
*September 26, 2013*

**physics**

two metra trains are on separate but parallel tracks. One has a speed of 90 km/hr, the other 80 km/hr. Initially, the two trains are 2.71 km apart. How long will it take the two trains to pass each other?
*September 25, 2012*

**math**

what is a translation over a vertical line?
*April 9, 2012*

**trig**

Find the general solution for x if cos2x + sin3x = sinx
*March 18, 2012*

**Chemistry**

What must be the molarity of an acetic acid solution if it has the same percent ionization as 0.150M HC3H5O2 propionic acid,Ka=1.3*10^-5 )?
*February 16, 2012*

**math**

x2+20x+100=64
*January 25, 2012*

**Physics**

how high above pool level
*January 22, 2012*

**Physics**

President Obama has set up a slide for his young children so they( and he) can slide into the pool behind the White House. The White House staff puts the bottom of the slide ( Which is flat for 2m) at the rim of the window sill which is 10m above the ground. Given that the ...
*January 22, 2012*

**Physics**

In 35s, Samsonite lifts his 8kg case from the floor to .8m above the ground (in his arms), carries it 24m across the room ( at the same height), and puts it on a conveyor belt 1.8m above the floor. At this point, the machine raises the bag 13 more meters in a mere 2s. Compare ...
*January 22, 2012*

**math**

Five years ago, you bought a house for $171,000. You had a down payment of $35,000, which meant you took out a loan for $136,000. Your interest rate was $5.6% fixed. You would like to pay more on your loan. You check your bank statement and find the following information. ...
*November 11, 2011*

**social studies landforms**

hi
*October 29, 2011*

**trig**

in a circle of radius 26, find the length of the arc spanned by a central angle of pi/4 radians. round your answer to 2 decimal places. use 3.1416 as an approx for pi.
*October 5, 2011*

**Civics**

I Have A Dream
*July 12, 2011*

**Chemistry**

Will CuCI2+Na2SO4->CuSO4=NaCI2 precipitate and how can you determine this?
*May 12, 2011*

**math**

3.2m+1.2=4.56
*April 8, 2011*

**math **

what is 320/380 (or in fraction term) in lowest terms? and what is 54 over 126 in lowest terms?
*March 28, 2011*

**math**

solve using the elimination method.show your work. if the system has no solution or infintite number of solutions, state this 4x-6y=30, 3x-5y=24
*February 16, 2011*

**French**

Identify each clothing article as un, une or des: -casquette -echarpe -chemise -cravate ceinture montre anneau cape chaussette soulier pantalons sac a main gant foulard boucles d'oreilles lunettes chapeau
*January 18, 2011*

**english**

Read the following sentence. Decide if the BOLD adverb modifies a verb, adjective, or adverb. He did a VERY good job. 1. verb 2. adjective 3. adverb
*January 10, 2011*

**math**

what inequality is true if x=3.04/1.48, y=1.99+0.33, and z=(1.3) to the 3rd power
*January 6, 2011*

**math**

what does this mean |2|???????? (those arnt one outside the twos there lines;])
*January 6, 2011*

**Math**

[60]___[-60] < > = Please help me!!
*January 5, 2011*

**calculus**

i understand optimization but im stuck on this problem.. mrs.day is building a new deck. she has 580 square feet to enclose. if one side is bounded by a wall, find the minimum cost to build the deck if one pair of opposite sides cost $12 per foot and remaining sides cost $19 ...
*January 2, 2011*

**precalculus**

1. Express (3x)^(1/5)(3x^2)^(1/3) using radicals 2. Simplify (8x^6 times 32y^5)^(1/2) 3. Approximate the real zeros of f(x)= 2x^4 + 3x^2 - 20.
*December 12, 2010*

**algebra**

Althea is 5 years older than Leah, and Leah is 4 years older than Jessica. The sum of thier ages is 34. How old is Althea?
*October 14, 2010*

**home economics**

hi
*September 30, 2010*

**college physicalscience**

the air speed of a plain is 223km/h and the pilot keeps the plane pointed north. A wind is blowing73.6km/h from the west. Determine the speed (in km/h) of the plane relative to the ground
*September 19, 2010*

**5th Grade Math**

Find the missing numbers and landmarks for the set of numbers: 18,20,20,24,27,27,__,30,33,34,36,36,__ A range:22 B mode:27 C Minimum ____ D Maximum ____
*August 31, 2010*

**Oil Spill**

what caused the oil spill in texas?
*May 30, 2010*

**Physics**

Power= V^2/R 40=120^2/R R=360 R=pL/A RA/p=L (360)(pir^2)/(5.0x10^-7)=L L= 2.77 (5.0x10^7) is the reisisttivity of tugsten at 1500 degrees
*March 14, 2010*

**college**

Write a 350- to 700-word response describing three case law decisions from the chapter you believe have the most substantial impact on policing today.
*February 13, 2010*

**11th grade**

what were knights social status and daily lives like?? its kind of confusing how this site puts it to me please help me understand..
*January 6, 2009*

**11th grade**

what were the most significant tecchnological innovations of the medieval period? need help this subject kills me!!!!!!
*January 6, 2009*

**Spanish**

When you conjugate the word ir--to go in spanish, the vosotros conjugated word would be vais. But is the a accented in vais or not?My teacher has written it on the board both ways. I just need a clarification. Thanks!
*April 21, 2008*

**Math**

50%
*April 9, 2008*

**Biology**

What is the different between codominance, multiple allele, and polygenic patterns? Also, what about dihybrid cross patterns?
*April 9, 2008*

**language arts**

The moonless,brisk night was perfect for holloween . cany you tell me the simple and complete subject?
*September 12, 2007*

**word unscramble**

Hi you
*September 28, 2006*

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