Saturday

April 25, 2015

April 25, 2015

Total # Posts: 1,395

**math**

if a cheetah runs 64 mph how far can it run in 15 minutes?
*February 10, 2011*

**geometry**

If a triangle has angle measures 15, 120 and 45, and the length of the side between the 15 and 120 angles is 8, what is the area of the triangle?
*February 10, 2011*

**chemistry**

vinegar is made by adding 33 g of acetic acid to 625 if water what is the percent by mass of acetic acid in this solution of vinigar
*February 8, 2011*

**mathematics**

train L - 3hrs and 12min train M - 2hrs and 48 min
*February 8, 2011*

**math**

Thank you so much
*February 7, 2011*

**math**

on a map with a scale of 2 cm = 25 km, what would be the dimension of a 145 km by 80 km rectangle?
*February 7, 2011*

**math**

Thank You Ms. Sue
*February 7, 2011*

**math**

If it takes a person to walk 30 minutes in 3 miles..how many minutes would it take a person who walks 3.5 miles be?
*February 7, 2011*

**math**

Thank you Ms.Sue
*February 7, 2011*

**math**

if a scale on a map is 1 in. = 250 miles, what would be the map distance if the actual distance between two cities is 1,000 miles?
*February 7, 2011*

**math**

on a map with scale 2 cm:25km, what would be the dimensions of a 145 km by 80 km rectangle?
*February 7, 2011*

**College Math**

row reduced form
*February 5, 2011*

**College Math**

Given the initial augmented matrix 1 -1 0 2 3 -2 -2 3 -2 2 1 -3 RREF?
*February 5, 2011*

**math**

thank you for helping me
*January 31, 2011*

**math**

an object that weighs 234lb on jupiter weighs 100lb on earth. what would an object that weighs 400 lb on jupiter weigh on earth?
*January 31, 2011*

**Math**

COMPUTER PRODUCTION MVE Enterprises can manufacture four different computer models; the Student, Plus, Net, and Pro models. The following gives the configurations of each model: STUDENT PLUS NET PRO Processor Celeron Celeron Celeron Pentium Hard Drive 20 gb 20 gb 20 gb 30 gb ...
*January 29, 2011*

**ecomerce business**

A store specializing in collectible china and plates has decided to move into e-business. However, the store is unsure about how to get the word out about its new site and has hired your team to assist it. Brand and identity: What are the pluses and minuses of keeping the ...
*January 27, 2011*

**Science**

Calculate the change in temperature with respect to height for the following, Height (KM) Mid-Lattitude Temp (C) 0 15 11 -56 16 -56
*January 27, 2011*

**chemistry**

A samples with a mass of 35 grams and a temperature of 97.3 degree c is placed into 75.0 g of water at 19.7 degree c. The final temperature is 22.3 degree c, what is the specific heat of the sample?
*January 25, 2011*

**Intermediate Accounting**

Purchased dental equipment on January 1 for $80,000, paying $20,000 in cash and signing a $60,000, 3-year note payable. The equipment depreciates $400 per month. Interest is $500 per month
*January 25, 2011*

**science**

what is an idea that i could use to explain the water cycle including evaporation, condensation, run off, etc?
*January 24, 2011*

**englsh**

it said use a verb and an ajective, could u give me example of one sentence please so i can follow.
*January 12, 2011*

**MATH**

Thanks a lot:)
*January 12, 2011*

**MATH**

Y-8 = -4/3(x+3) If this was in slope intercept form I would have been able to plot it on the graph, but all the fractions and stuff are mixed up so how do I do this?
*January 12, 2011*

**HELP MATH URGENT**

thx so much helper<3
*January 12, 2011*

**HELP MATH URGENT**

X-5y+10 = 0 I dont know how to convert general form to slope intercept, how do I figure this out? Please help me:(
*January 12, 2011*

**dressmaking**

1} A {2} A {3}B{4}D {5} C {6} A {7} B {8} A {9} C {10} C
*January 12, 2011*

**Econimics**

What has been the effect of DRGs on hospital admissions and the length of stay? What are some advantages and disadvantages of DRGs?
*January 11, 2011*

**math**

how do I find the volume of a pyramid with a square base, 20 meters on each side, and a height of 21 meters
*January 7, 2011*

**English**

Thanks! I think the 4th is dramatic.
*January 7, 2011*

**English**

I am looking for 4 kinds of narration in a short story.
*January 7, 2011*

**healthcare**

Should the United States allow the direct marketing of medications in print and on television? Support your response. How do you feel direct marketing affects the cost of prescription medications?
*January 3, 2011*

**ECONOMICS**

What would be the risks and benefits of a young healthy person choosing a managed care plan What would be the risks and benefits of an older person with a chronic disease selecting a managed care plan?
*January 3, 2011*

**English**

I am having trouble coming up with a thesis statement for an essay. I need to compare and contrast how I view nature to the way Tenyson and Wordsworth view it. I have to focus on what these observations say about my culture, society,a dn religion. My idea: Three contributing ...
*December 31, 2010*

**development**

What is the importance of each domain of adult development physical,coqnitive,and socimotinal.
*December 12, 2010*

**Math**

How could you define the perimeter of a non-simple closed curve? Give an example in your explanation.
*December 11, 2010*

**Chemistry**

10 mole of NH3
*December 11, 2010*

**Business Math**

30 gals. with 15% spoilage=4.5 gals.profit(30x1.58)x1.2=56.88 gals.xpricexcost+20%56.88./.25.5gals.=markupfor remaining gals. no-2.23 round 5gals.spoiled 56.88./.25=2.28 not it so round off 4gals. 56.88./.26=$2.1876 or $2.19
*December 10, 2010*

**Physics**

When a mass-spring system oscillates with a small amplitude of A1, it has a period of 1.0 s. If the system is then made to oscillate with a larger amplitude of A2 = 2*A1, what is the new period? Thanks!
*December 7, 2010*

**Chemistry**

What kind of pressure would be exerted by 5 moles of water vapor if it were contained in a 0.5 liter bottle heated to 1000K?
*December 6, 2010*

**algebra**

the number of cats that are homeless can be modeled by the equation N= 2.1t squared - 82t + 95 where N is the number of cats that are homeless and t=0 set as the current year.Use the quadratic model to find the number of years from now until the number of homeless cats is ...
*December 5, 2010*

**Psychology**

Create an operational definition of self-confidence using peer reviewed articles as reference
*December 5, 2010*

**Calculus**

Represent f(x)= (e^x -1)/x as a power series.
*December 3, 2010*

**PreCalc**

The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of the second resistor. Express the total resistance R as a function of x. How do I...
*December 1, 2010*

**physics**

A loudspeaker is placed between two observers who are 111 m apart, along the line connecting them. If one observer records a sound level of 51.9 dB and the other records a sound level of 82.5 dB, how far is the speaker from each observer?
*November 30, 2010*

**chemistry**

Given the table of Ka values on the right below, arrange the conjugate bases in order from strongest to weakest. Acid Ka HClO 3.5 e-8 HClO2 1.2 e-2 HCN 6.2 e-10 H2PO4- 6.2 e-8 A. ClO2-, ClO¬-, HPO42-, CN- B. ClO2-, HPO42-, ClO¬-, CN- C. CN-, HPO42-, ClO-, ClO2¬- D...
*November 29, 2010*

**calculus**

1. e^ln3 - 2lnx 2. 2(lnx)^2 + lnx - 1 =0 3. d/dx (e^x . e^e^x)
*November 27, 2010*

**Algebra 1**

Thank you!
*November 26, 2010*

**Algebra 1**

is the slope y1-y2 over x1-x2?
*November 26, 2010*

**Algebra 1**

Ok-but what is the formula using x and y variables?
*November 26, 2010*

**Algebra 1**

how do I find the slope of the graph of the linear function "f"? f(2) = -3,f(-2) = 5
*November 26, 2010*

**Substance Abuse**

only certain people can become alcoholics? True or False. I think Its False?
*November 23, 2010*

**Help Please**

True or False? Beer and wine are less intoxicating then whiskey.
*November 23, 2010*

**history**

Writing a paper.... Has Israel gained or lost ground in the last 20 years?
*November 23, 2010*

**history **

I am thinking of writing a paper on Israel. What countries are threatening Israel?
*November 23, 2010*

**Math**

Can you figure out this message? ZASMEZASIXP IP JUT One clue the first word starts with an M
*November 23, 2010*

**chemistry**

calculate the energy of a wave that has a frequency of 3.5*10^8 m/s
*November 22, 2010*

**Banking**

What is the bottom line on an income statement ? A. The gross margin B. The final sales C. The total operating expences D. The net income (or loss)
*November 21, 2010*

**chemistry**

how to balance chemical equations
*November 20, 2010*

**Physics**

A 120 kg astronaut (including space suit) acquires a speed of 3.00 m/s by pushing off with his legs from an 1900 kg space capsule. What is the change in speed of the space capsule? As the reference frame, use the position of the space capsule before the push. if the push lasts...
*November 17, 2010*

**Statistics**

0.8
*November 16, 2010*

**Physics**

A 21.0 kg child descends a slide 3.4 m high and reaches the bottom with a speed of 2.0 m/s. How much thermal energy due to friction was generated in this process?
*November 16, 2010*

**Physics**

A cyclist intends to cycle up a 7.5 degree hill whose vertical height is 170 m. Assuming the mass of bicycle plus cyclist is 95 kg, calculate how much work must be done against gravity. If each complete revolution of the pedals moves the bike 5.6 m along its path, calculate ...
*November 16, 2010*

**Physics**

A 58 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 15 m, and falls a total of 36 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate the maximum acceleration she ...
*November 16, 2010*

**Physics**

A projectile is fired at an upward angle of 25.0^\circ from the top of a 310 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
*November 15, 2010*

**biology**

it is possible that he would be homozygous but not ccertain because some males have an extra chromosome foe example : the normal male has "XY" and another male may have "XXY" which means its possible for a male to be heterozygous but its not common. Now if ...
*November 15, 2010*

**Stout**

A chocolate chip cookie contains about 200 kcal. How many kilowatt-hours of energy per day does it contain. How long could you light a 100-W light bulb with the energy from the cookie?
*November 14, 2010*

**inter Alegbra**

r+s=5 3s+2t=-1 4r+t=14 ican u breakdown the answer I get half way though i forgot the last pat wheater i put it back into the original equationn alot of steps i get lost
*November 14, 2010*

**inter Alegbra**

A start up computer company can sell 1000 computers if they price them at $500. The number sold will increase by 10 for every $1 decrease in the price. The company has fixed costs of $100,000, and each computer costs $300 to produce. Find the price that will maximize the ...
*November 14, 2010*

**inter Alegbra**

thank you henry you rock
*November 14, 2010*

**inter Alegbra**

Pick a car and find its top speed. Assuming that your chosen car reaches its top speed at the top of a ramp, leaving the ramp vertically 20 feet about the ground: 1.) When will the car land back on the ground? 2.) When would the car be traveling the fastest? 3.) When would the...
*November 14, 2010*

**inter Alegbra**

A startup company can sell 1000 computers if they price them at $500. The number sold will increase by 10 for every $1 decrease in the price. The company has fixed costs of $100,000, and each computer costs 4300 To produce. find the price that will maximize the company's ...
*November 14, 2010*

**microeconomics problems**

The GreenAcres mowing company wants to buy the new “Titan3000” lawn mowers. Assume that the lawn mowers are expected to last indefinitely, that operating expenses are negligible, and that the price per acre of mowed lawn is expected to remain constant in the future. ...
*November 14, 2010*

**inter Alegbra**

is $14 by completing the square
*November 14, 2010*

**inter Alegbra**

A band can sell 80 CDs at concert if they sell the Cds for $12 each. For every $1 increase in the price, they will sell 5 fewer Cds. Determine the price for a CD that will maximize the band's revenue.
*November 14, 2010*

**intermidiate algebra**

pick a car find its top speed. Asusuming that your chosen car reaches its top speed at the top of a ramp, leaving the ramp vertically 20 feet about the ground? 2. When would the car be traveling the fastest? 3.)When would the car be traveling the slowest? 4.) based on the ...
*November 14, 2010*

**economics**

A monopolist faces an upward-sloping marginal cost curve. Its profit-maximizing quantity will be a. at the minimum point of the marginal cost curve b. less than the (total) revenue-maximizing quantity c. equal to the (total) revenue-maximizing quantity d. in the unit elastic ...
*November 13, 2010*

**Physics**

You are the design engineer in charge of the crashworthiness of new automobile models. Cars are tested by smashing them into fixed, massive barriers at 51 km/h (32 mph). A new model of mass 1900 kg takes 0.18 s from the time of impact until it is brought to rest. Calculate the...
*November 10, 2010*

**Physics**

A 23 g bullet traveling 220 m/s penetrates a 4.2 kg block of wood and emerges cleanly at 140 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
*November 10, 2010*

**Physics**

A 3600 kg open railroad car coasts along with a constant speed of 11.0 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 3.70 kg/min. Ignoring friction with the tracks, what is the speed of the car after 80.0 min?
*November 10, 2010*

**Physics**

Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1800 kg/s with a speed of 3.8×104 m/s (at the moment of takeoff).
*November 10, 2010*

**Physics**

A 0.145 kg baseball pitched at 37.5 m/s is hit on a horizontal line drive straight back toward the pitcher at 48.0 m/s. If the contact time between bat and ball is 3.50×10^−3 s, calculate the average force between the ball and bat during contact.
*November 10, 2010*

**Physics**

Eight books, each 4.1 cm thick with mass 1.8 kg, lie flat on a table. How much work is required to stack them one on top of another?
*November 10, 2010*

**chemistry**

the value of Kp after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the partial pressure of O2...
*November 7, 2010*

**partial pressure**

1) the value of Kb after the decomposition of sulfur trioxide (S03). 2SO3 (g)--2SO2 (g) +O2 (g) is 1.79 x10^-5 at 350 degree celcius. if SO3 initially at 0.200 atm pressure comes to equilibrium in an otherwise empty tank at 350 degree celcius, determine the partial pressure of...
*November 7, 2010*

**chemistry**

How many moles of sodium acetate CH3COONA must be dissolved in 1.00L of 0.200M acetic acid to make a buffer pH 4.56? ka of acetic acid is 1.76x10^-
*November 6, 2010*

**chemistry**

for a) i got the pH of HF to be 2.07 and for b) i'm a little stuck. the mole of HF is 0.2M x 0.05L =0.1mol the mole of NaOH is 0.2M x 0.02 L= 0.02mols. this is where i'm stuck
*November 6, 2010*

**chemistry**

sorry it's Kp, it's a typo
*November 6, 2010*

**inter alegbra**

$102.00
*November 4, 2010*

**lang. arts**

This is due tomorrow!
*November 3, 2010*

**lang. arts**

Is "good" the adverb and "very" the word it modifies? (adverb)?
*November 3, 2010*

**lang. arts**

We read a very good Japanese folk tale called "Green Willow." Not sure what the adverb is in this sentence? Is "good" the adverb and "read" the word it modifies?
*November 3, 2010*

**lang. arts**

We will soon be going to computer class. Is "soon" the adverb and "going" the word it modifies? Thank you.
*November 3, 2010*

**lang. arts**

Your parents will probably give you permission. Is "probably" the adverb and "will" "give" the words it modifies? Not sure if both words or just "give"?
*November 3, 2010*

**lang. arts**

"Very" sadly, we returned home. Very is the adverb, is "sadly" the adverb it modifies?
*November 3, 2010*

**lang. arts**

Thank you for your help Ms. Sue!
*November 3, 2010*

**lang. arts**

Happy is an adjective?
*November 3, 2010*

**lang. arts**

We are "so" happy for you. Happy is the adverb, is "happy" the verb it modifies?
*November 3, 2010*

**lang. arts**

The play Purlie Victorious was "too" funny for words. "too" is the adverb, is "funny" the verb it modifies?
*November 3, 2010*

**language arts**

She wrote it "very" carefully. "Very" is the adverb; is "carefully" the adverb it modifies?
*November 3, 2010*