Saturday

October 10, 2015
Number of results: 64,401

**Statistics**

The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.9 grams per mile and standard deviation 0.15 grams per mile . (a) What sample size is needed so that the standard deviation of the sampling distribution is 0.01 grams per mile ?
*January 12, 2012 by Terra *

**algebra**

A cylindrical oil tank is 2/5 full. If 9 more liters are added, the tank will be 5/8 full. What is the capacity of the tank?
*March 1, 2012 by Gloria*

**Physics (College)**

Driving on asphalt roads entails very little rolling resistance, so most of the energy of the engine goes to overcoming air resistance. But driving slowly in dry sand is another story. If a 1200 kg car is driven in sand at 5.2 m/s, the coefficient of rolling friction is 0.06. ...
*November 26, 2011 by Set11*

**Physics**

A primitive diving bell consists of a cylindrical tank with one end open and one end closed. The tank is lowered into a freshwater lake, open end downward. Water rises into the tank, compressing the trapped air, whose temperature remains constant during the descent. The tank ...
*November 11, 2014 by Jason*

**Physics**

A tank of water has been outdoors in cold weather, and a slab of ice 5.8 cm thick has formed on its surface (Fig. 18-46). The air above the ice is at -14°C. Calculate the rate of formation of ice (in centimeters per hour) on the ice slab. Take the thermal conductivity of ice ...
*January 12, 2012 by Bobby*

**math**

Which situation describes a correlation that is not a casual relationship? 1 The rroster crows, and the sun rises. 2 The more miles driven, the more gasoline needed. 3 The more powerful the microwave, the faster the food cooks. 4 The faster the pace of a runner, he quicker the...
*June 12, 2009 by Anonymous*

**sciencee**

1. What pressure would be needed to compress 25.1 mL of hydrogen at 1.01 atm to 25% of its original volume? 2. If the pressure on a 1.04-L sample of gas is doubled at constant temperature, what will be the new volume of the gas? 3. A 1.04-L sample of gas at 759 mm Hg pressure ...
*March 9, 2010 by Teisha*

**physics**

Write the energy transformation equation for each situation Fireworks explodes An arrow is shot off a bow and flies through the air A paved driveway feels hot on a clear ,sunny day A camper raises an axe to chop a chunk of wood A lawn mower with a gasoline engine cuts a lawn
*April 12, 2012 by Melissa*

**Finance**

Brand advertising is offered a 3/10 net 40 trade discount by its supplier. In the past Brand has been able to get away with paying for supplies on credit in 60days. since it doesnt have money on hand to take advantage of discount, it tries to negotiate a loan with portland ...
*July 19, 2015 by Donna Claire*

**math**

After 75 gallons of oil are removed from a cylindrical thank, its level is lowered from 1/6 to 1/7 of its capacity. How many gallons should now be added to the tank to fill it?
*May 23, 2014 by Rabie*

**Physics**

This is based off of the paper "Scaling -- The Physics of Lilliput", but I think the following questions can be answered out of context: 1. Based on the Lilliputian reading: A) A rectangular water tank is supported above the ground by 4 pillars 5.0 cm long whose diameters are ...
*September 9, 2014 by Emily*

**law**

Ron supervises delivery of flowers for a wholesale distributor of fresh flowers, Flowers. Inc. In order to accommodate one of the company’s best customers, Ron offers to immediately rush a delivery of fresh peonies. All of the delivery trucks are currently out on delivery. Ron...
*February 2, 2014 by Anonymous*

**calculus**

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top. An equation that can ...
*July 22, 2015 by nal*

**chemistry**

If 1.20 grams of sodium metal are reacted with 4.00mL of water, how many grams of NaOH will be produced (density of water= 1.00g/mL)
*September 21, 2009 by Andy*

**Chemistry I**

A scuba diver's tank contains 0.23 kg of O2 compressed into a volume of 3.5 L. (a) Calculate the gas pressure inside the tank at 11°C. ________atm (b) What volume would this oxygen occupy at 20°C and 0.92 atm? ________L what are the formulas for this problem?
*May 17, 2009 by Elizabeth*

**math**

Which has the lower unit price? Soap. brand A:$1.34 for 3 bars. brand B:$1.44 for 4 bars. i think it is b.
*March 16, 2010 by candance*

**chemistry 2**

What is the molality of a solution that has 80 grams of Benzoic Acid dissolved in 400 mL of ethanol. The density of ethanol is .789 grams/moles
*November 11, 2010 by MICHELLE*

**geometry **

The density of a block of wood is 0.78 grams per cubic centimeters. What is the volume of the block if its mass is 28.8 grams?
*February 18, 2011 by mariah *

**Finance**

Brand Advertising is offered a 3/10 net 40 trade discount by its supplier. In the past Brand has been able to ger away with paying for supplies on credit in 60 days. Since it doesn't have money on hand to take advantage of the discount, it tries to negotiate a loan with ...
*April 14, 2012 by Alison*

**Physics Needy Help**

A tank of water has been outdoors in cold weather, and a slab of ice 5.8 cm thick has formed on its surface (Fig. 18-46). The air above the ice is at -14°C. Calculate the rate of formation of ice (in centimeters per hour) on the ice slab. Take the thermal conductivity of ice ...
*January 12, 2012 by Bobby*

**ChemistryDrBob222**

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage batteries(like a car battery). 1....
*January 13, 2011 by Kevin*

**English**

1. They are wearing brand name shoes. 2. They are wearing brand-name shoes. 3. They are wearing name brand shoes. 4. They are wearing anme-brand shoes. (Which one is correct?)
*October 23, 2012 by rfvv*

**Math**

How would you do this problem? At the beginning of the year, the price of gasoline is $1.05 per gallon. The price increased $0.05 per gallon each week for the next 5 weeks. The price then decreased $0.07 per gallon for the next 3 weeks. Find the difference between the cost of ...
*August 26, 2008 by Jillian*

**buisness**

I want a project on 'case study on soft drinks' of about 30 pages which should include information abou history,nature of soft drinks, process of manufacturing and a casestudy on a particular softdrink brand
*December 15, 2013 by yash*

**physics**

A gasoline engine runs with 28 percent efficiency. It expels 3.60x10^4 J of heat in each cycle. a. Find the heat absorbed in one cycle. 128,571.4????? b. Find the work output in one cycle.
*February 19, 2007 by anonymous*

**chemistry**

How would this problem be worked using dimensional analysis? Answer is 1.32g and I can work it (.900/13.6) * 20 = 1.32 But i need it in dimensional analysis and the hint was to first find volume of mercury. How many grams of alcohol with a density of 0.900 g/cm3 will have the ...
*May 25, 2015 by Rachel*

**Economics**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should for U...
*July 6, 2009 by Johnny*

**Math**

A swimming pool size is 42 m long and 55 m wide with an average depth of 7.5 m. Using the density of water as 1 g/ml: A. how many gallons of water fill the pool B. The weight of water in lbs after the pool is full C. How long will it take to fill the ppol if a pump fills the ...
*September 27, 2013 by wendy*

**chemistry 30**

Catalytic converters in automobiles are used a. only to burn uncombusted gasoline b. only to convert carbon monoxide to carbon dioxide c. only to convert nitrogen oxides to nitrogen and oxygen d. all of the above
*December 30, 2011 by Tucker*

**chem**

consider a mixture of air and gasoline vapor in a piston. original V is 30cm^3. if the combustion of misture releases 985J energy, to what volume will the gases expand against a constant pressure of 655 torr if all energy of combustion is converted into work ro push back the ...
*November 20, 2007 by mel*

**Chemistry**

Ethanol, C2H5OH or C2H6O, is mixed with gasoline and sold as gasohol. Given the following thermo-chemical reaction, calculate the kilograms (kg) of CO2 produced when enough ethanol is combusted to provide (or give off) 369 kJ of heat: C2H5OH (l) + 3 O2 (g) --> 2 CO2 (g) +3 ...
*July 12, 2011 by Robert*

**Calculus and vectors**

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top. An equation that can ...
*January 22, 2014 by Annie*

**Calculus - Find volume of cylinder**

There is a cylindrical tank lying horizontally on the ground, its diameter is 8 feet, and length is 25 feet, the depth of the water currently in the tank is 2 feet. (1 gallon=231 cubic inches) How many gallons of water are in the tank? How many gallons of water will it take to...
*May 15, 2007 by Ashely*

**equations**

I am not great at equations... I keep practicing and working these problems and questions out but I always seem to get different answers can someone please guide me on how or tell me the correct way to work these problems out>> The linear equation y=0.15x + 0.79 ...
*October 25, 2009 by Anonymous*

**equations**

I am not great at equations... I keep practicing and working these problems and questions out but I always seem to get different answers can someone please guide me on how or tell me the correct way to work these problems out>> The linear equation y=0.15x + 0.79 ...
*October 25, 2009 by Anna*

**Word Problems**

If your car gets 18 miles per gallon of gasoline, how many pints of gas will you need to take a 698- mile trip? I no that 1pt = 480ml and 1g= 3840 ml so do I x 18 miles per gallon by the amount of pints in a gallon?
*July 22, 2011 by Rina*

**math**

You drive 15 miles each way to go to work. Your car gets 18 miles per gallon and gasoline in your town costs $2.50 per gallon. How much money will it cost you to get to and from work for one five-day work week
*August 21, 2011 by joshu*

**physics**

My answer doesn't make sense. I will show question then my work: A city holding tank for water sits 20 m above the city. If a house was on fire 15 m away from the base of the holding tank, and the tank was originally filled to a depth of 15 m, to what depth would firefighters ...
*September 24, 2015 by Jackie*

**physics**

My answer doesn't make sense. I will show question then my work: A city holding tank for water sits 20 m above the city. If a house was on fire 15 m away from the base of the holding tank, and the tank was originally filled to a depth of 15 m, to what depth would firefighters ...
*September 24, 2015 by Jackie*

**Economics**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force...
*March 17, 2010 by John*

**math check**

Would some please check these and see if I am doing them right thank you 1. Gasoline is about $2 per gallon. You use about 1 1/2 gallons each day driving to and from work. How much should you budget for gasoline over the next month (about 20 workdays)? Answer 1 1/2 x $2.00 = $...
*January 5, 2007 by tara*

**managerial economics**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force...
*February 16, 2008 by jean*

**managerial economics**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force...
*February 18, 2008 by jean*

**Science**

Ethanol has a density of 0.789 grams per centimeter ubed. How many cubic centimeters of ethanol must be poured into a graduatedcylinder to equal 30.3 grams?
*October 4, 2009 by Wanda*

**c**

A hose can fill a swimming pool in 4 hours. Another hose needs 9 more hours to fill the pool than the two hoses combined. How long would it take the second hose to fill the pool?
*September 16, 2014 by Anonymous*

**math**

how do I find the max number of 1.7 inch diameter spheres that can be stored in a cylindrical tank the tank has a radius of 2 inches and height of 4 inches there are 2 inches of water in the tank
*April 26, 2015 by emily*

**Conclusions**

You expect to get forty miles to the gallon in that? Why, that old wreck has a monster V8; besides, it's fifty years old and needs an overhaul. I state possibly true or possibly false due the gasoline that was made then vs. now. Also, cars or trucks in this century gets 29 ...
*August 13, 2008 by Worship*

**Math**

Please help me write this in an equation. "Tyrone bought 15.3 gal of gasoline priced at g dollars per gallon, 2 qt of pil priced at q dollars per quart, and a wiper blade priced at $3.79. Write an expression that represents the total cost of these items.
*November 9, 2014 by Christine*

**^^Brand Extension^^**

wat does brand extension mean? cud u give me an example?
*May 17, 2011 by cassandra*

**MBA Econ**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force...
*May 20, 2009 by Nick*

**economics**

engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. they estimated that in mass production the car would cost 40000 per unit to build. the engineers argued that congress should force ...
*August 10, 2010 by Razu*

**Controls**

If you have a tank of water at sea level and the temperature of the water in the tank is 110 degrees F, what is the height of the water if the pressure at the bottom of the tank is 95 inches of mercury(absolute)
*January 31, 2011 by Kelsey*

**Plzzzzz help urgent math **

A 4.5 m long pipe rests against a 2 m high tank, one end of the pipe is on the ground 3 m from the base of the tank. How much of the pipe overhangs the tank?
*November 28, 2012 by Mia*

**Chemistry**

Sample has 150 grams, 20 mL, and a density of 7.5 g/mL. If I double my sample size what would those values turn into?
*January 30, 2013 by Jonnnie *

**science**

Concentrated sulfuric acid (18.4 molar H2SO4) has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar, the solution has a density of 1.38 grams per milliliter and can be used as an electrolyte in lead storage batteries for automobiles. 1. Calculate ...
*October 24, 2007 by raksha*

**Chemistry;HELP**

Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------- Volume v Adjust the density formula and solve the problems below: m D = ------- Original ...
*January 16, 2013 by Victoria*

**chemistry**

At room temperature pure water has a density of 1.00 g/ mL. What mass of water (in grams) will fit into a container if 1.00 lb. of mercury completely fills the container? Okay, here is what I solved so far. Let's say H2o equals water and Hg equals mercury= 13.6g/mL. equals an ...
*April 7, 2010 by Amy*

**statistics**

The average price of a gallon of unleaded regular gasoline was reported to be $2.34 in Northern Kentucky use this price as a population mean population standard deviation is $.20. question. what is the probability that the mean price for a sample of 30 station is good then $....
*September 24, 2014 by thickhoneybrown*

**math**

Water is Pumped into an underground tank at a constant rate of 8 gallons per minute.Water leaks out of the tank at the rate of (t+1)^½ gallons per minute, for 0<t<120 minutes. At time t=0, the tank contains 30 gallons of water. A) How many gallons of water leak out of ...
*April 30, 2008 by POD*

**Chemistry**

If an aquarium tank holds 100 litres of water, calculate how much heat energy would be required to heat the tank from 18.2 Degrees(C) to 32 Degrees(C)
*September 11, 2015 by Samuel*

**College Physics**

How many gallons of Oil would be in a cylindrical tank that was 24 feet long and had a diameter of 6 feet if the oil was 6 inches deep at the bottom of the tank?
*September 10, 2014 by Meghan*

**managerial economics**

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimate that in mass production the car would cost $40,000 per unit to build. The engineers argued that Congress should force ...
*February 7, 2008 by jean*

**algebra**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...
*March 1, 2014 by Molly*

**math**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...
*March 1, 2014 by Molly*

**MATH**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...
*March 1, 2014 by Mary*

**Brand Image--Need of Extreme Help**

How do the components of Adidas create the product image? The components are the Logo—which is the 3 stripes, is there a trademark for Adidas? The other component is the slogan which is—Impossible is nothing. The Brand name which is Adidas is also a component of Adidas. How do...
*May 27, 2011 by mary*

**math**

Four brands of soap are available in a local store. Compute the unit price and decide which brand is the best buy. Brand Ounces Total Price Unit Price Squeaky Clean 5.5 $0.36 Smell Fresh 7.5 0.41 Feel Nice 4.5 0.31 Look Bright 6.5 0.44 Compute the unit price and decide which ...
*June 25, 2008 by dawn*

**SCIENCE **

WHAT MASS IN GRAMS OF OXYGEN GAS IS CONTAINED IN C 8.5L TANK AT 32 DEGREE CELSIUS AND 3.23 ATMOSPHERE
*March 9, 2015 by FLORA *

**sst**

toothpaste shampoo mobile and telivision are four products used in daily life. create your own brand. make an advertisment to get your friends to buy this brand . also add a slogen a jingle or a catchy line.
*September 5, 2015 by shehzad*

**Physical Science**

A 200-L iron tank has a mass of 36 kg. a) Will it float on seawater if empty? b) What mass of potatoes could be added such that the tank would still float? [Note: 1000 L = 1 m3 ]
*February 21, 2012 by Jessica*

**Calculus**

I have a couple of questions and i wanted to know if my answers are correct. Thanks in advanced! 1. Determine the values of x for which the function f(x)=x+2/x-2 is discontinuous Would the answers be x=2 because the function would be undefined? 2. An oil tank is being drained ...
*April 9, 2014 by Sarah*

**chemistry**

How much ice (in grams) would have to melt to lower the temperature of 350 of water from 24 to 4? (Assume the density of water is 1.0 .)
*August 27, 2010 by sara*

**chemistry**

Ok so i know how to get density but what do you do if the two numbers you are given are 12.993 cm^3 and10.49 g/cm^3.. i know its is mass divided by volume or grams divided by cm but what would i do in the situation?? thanks
*October 5, 2010 by ammmyyy*

**Math/Physics**

Please check my work below and comment. A tank initially contains 80 gallons of fresh water. A 10% acid solution flows into the tank at the rate of 3 gallons per minute. The well-stirred mixture flows out of the tank at the rate of 3 gallons per minute. Find the amount of acid...
*July 13, 2007 by COFFEE*

**CHEM MOLES !@@!**

Mole Calculation Worksheet 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles are in 2.3 grams of phosphorus? 6) How many ...
*December 16, 2014 by Theresa *

**chem**

Forty miles above the earth's surface the temperature is 250 K and the pressure is only 0.20 mm Hg. What is the density of air (in grams per liter) at this altitude? (Assume the molar mass of air is 28.96 g/mol.) PV=nRT n/V= molar desity= P/RT mass density= molar density*...
*March 30, 2007 by Helpme*

**science**

When automobiles burn gasoline, they release many pollutants including sulfur oxides into the air. The release of sulfur oxides is a chief cause of acid rain. Which of the following is a consequence to the natural environment due to acid rain?
*August 29, 2012 by Anonymous*

**math**

On a weekend road trip, the Jensen family drove 210 miles on highways, where their car gets 35 miles for each gallon of gasoline, and 54 miles on city streets, where their car gets 18 miles for each gallon. How many gallons of gas did they use?
*February 26, 2015 by Anonymous*

**CALCULUS**

A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one endof the tank?
*March 12, 2012 by Mishaka*

**Chemistry**

If 5.0 grams of Zinc were added to 35.0 grams of H2SO4, how many grams of hydrogen gas would be evolved?
*November 19, 2013 by Elizabeth*

**acids and bases**

Is everything an acid or a base? it totally depends. It depends on how you define an acid and base. In water systems, yes. But in non water solutions...say oil mixed in gasoline....pH has no meaning. Why acids act in similar ways?
*February 22, 2007 by Wanda*

**six sigma**

If the mean value of the weight of a particular brand of dog food bag is 20.6 pounds and the standard deviation is 1.3, assume a normal distribution and calculate the percentage of bags that falls below the lower specification value of 19.7 pounds.
*November 26, 2014 by stansler*

**physics.**

A flywheel is a solid disk that rotates about an axis that is perpendicular to the disk at its center. Rotating flywheels provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric ...
*January 5, 2008 by Disy*

**chemistry**

A student is performing an experiment to find the density of water. She obtains a 100ml beaker, which weighs 53.257 grams, and she fills it with 60 mL of water. The temperature of the water is 25.5 degrees celsius (room temperature). Again the student takes the weight of the ...
*February 16, 2015 by Samantha*

**linear algebra**

in order to grow a certain crop, it is recommended that each square foot of ground be treated with 10 units of phosphorous, 9 units of potassium, and 19 units of nitrogen, suppose that there are three brands of fertilizer on the market - say brand X, brand Y, and brand Z. One ...
*November 11, 2012 by deel*

**chemistry**

if i mix 4 grams of hydrogen and 32 grams of oxygen how many grams of water would be produced
*May 24, 2010 by kee*

**Chemistry**

If 80.0 grams of methane were reacted with 368 grams of oxygen, how many grams of water would be formed (find limiter first).
*April 3, 2011 by Lisa*

**physical science**

The density of copper is 8.92 g/cm cubed. if you plotted the mass of copper in grams verses the volume in cubic cm what would the slop of the line be?.
*January 24, 2011 by misti*

**chem**

gold hasa density of 19 g/cm^3 if an 18 inch necklace is made of pure gold how much would it weigh in grams if it is 1 cm wide and 1 mm thick
*March 16, 2011 by hillary*

**chemistry**

Ethanol has a density of 0.780 g/mL. What volume would 500. grams of ethanol occupy. Answer with correct number of sig figs
*January 31, 2012 by kr*

**Science**

Ethanol (grain alcohol) has a density of 0.789 grams per centimeter cubed, How many cubic centimeters of ethanol must be poured into a graduated cylinder to equal 30.3 grams?
*January 10, 2012 by Cedquandra*

**Math**

A driver uses about 600 gallons of gas a year to get around his car. For how many years could he drive his car on all the gasoline that is being lost in one day as a result of this spill.. In one day 2,000,000 gallons spilled.
*February 6, 2013 by Sarah*

**math/help**

A driver uses about 600 gallons of gas a year to get around his car. For how many years could he drive his car on all the gasoline that is being lost in one day as a result of this spill.. In one day 2,000,000 gallons spilled.
*February 6, 2013 by Nalini*

**Math**

A tank initially contains 50 liters of water. A hose adds water to the tank at a rate of 2 liters per minute. Write a linear equation for the amount of water in the tank, W, liters in terms of t, minutes. Then use your equation to find how much water is in the tank after 20 ...
*November 15, 2012 by Brigette*

**MACROECONOMICS**

Which of the problems in the construction of the CPI might be illustrated by each of the following situations? Explain. a. the invention of the Sony Walkman b. the introduction of air bags in cars c. increased personal computer purchases in response to a decline in their price...
*April 12, 2009 by SARA*

**maths**

a cubical water tank is filled by tap water at the rate of 1.4liters per second. find the length of the tank in centimeters if the tank if completely filled in 28 sec
*March 13, 2015 by neevetha*

**maths**

a cubical water tank is filled by tap water at the rate of 1.4liters per second. find the length of the tank in centimeters if the tank if completely filled in 28minutes
*March 14, 2015 by neevetha*

**Algebra **

a cylindrical water tank has a volume of 20π cubic feet . the height of the tank is 1 foot more than 2 times of its radius . find the radius and height of the tank
*April 22, 2014 by Anonymous*

**Calculus**

A magic tank starts out 4 inches in length, 4 inches wide, and 12 inches deep. As the tank is filled, it magically expands proportionally keeping it rectangular form just big enough to hold the liquid. If the liquid is being pumped into the tank at 8 cubic inches per minute, ...
*March 12, 2013 by John*

**Grenada**

John has a 25-gallon fish tank. John filled his tank today with 23-gallons of water. The water evaporates at a rate of 1.5 gallons per week. John adds 2 gallons to the tank every other week. At what following time will the tank contain 16.5 gallons?
*January 13, 2013 by Daryl*