Number of results: 16,370
train X travels west at 50 mph and train Y travels east at 40 mph. train X leaves at 2 p.m. and train Y leaves at 1 p.m. train X is located 100 miles east of Durham and train Y is located 75 miles west of Durham. which train will get to Durham the earliest?
March 7, 2011 by Roxy
Is this f'(x) or partial derivative?
Find d VC/ d y = ((y/240)^2)(w) = 2yw/240^2 + 0 + y^2/240^2 but final answer is.... = 2yw/240^2 So, is the question asking for partial derivative or first derivative? I think partial because the final answer only took the derivative with respect to y.
October 14, 2009 by Anonymous
Pre Calculus 2
A ship regularly travels between two ports that are 350 miles apart. When traveling directly from A to B, the ship sails on a bearing of . However, to avoid a storm, one day the ship leaves A on a bearing of and travels for 6 hours at 17mph. When the bad weather has passed, it...
August 4, 2013 by Sara
Two cars travel at the same constant speed. The first car travels for 10 minutes, the second for 27 minutes. If the second car travels 18 miles farther tht the first, how far does each car travel?
September 19, 2010 by Rose
jasmine bought 6 gallons of apple juice. after filling up 4 bottles of the same size with apple juice, she has 0.3 gallons of apple juice left. hhow many gallons of apple juice are in each container?
November 12, 2014 by kelsey
Chemistry - Van't Hoff Factor
How does the van't hoff factor relate to freezing points? If one van't hoff factor is bigger than another, is its freezing point lower or greater? delta Tf = iKfm. So increasing i will increase delta Tf Van't Hoff factor is the concentration of particles in a solute, so, if it...
January 5, 2007 by Belinda
A car company says that the mean gas mileage for its luxury sedan is at least 21 miles per gallon. You believe the claim is incorrect and find that a random sample of five cars has a mean gas mileage of 19 miles per gallon and a standard deviation of 4 miles per gallon. Assume...
July 27, 2010 by sue
the speed of train A is 8 mph slower than the speed of train B. Train A travels 220 miles in the same time it takes train B to travel 260 miles. Find the speed of both trains. Speed of train A = Speed of train B =
November 12, 2012 by pam
A speedboat racer travels at a steady rate of 0.75 of a mile per 0.25 of a minute. How many minutes does it take for the boat to travel 3 miles? I have 0.75 (is that correct?) How long will it take for the boat to travel 7.5 miles? I have 1.88 (is that correct?)
May 5, 2011 by derrius
Math please Hurry !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Choose the correct answer. Milo wants to make a mixture that is 50% lemon juice and 50% lime juice. How much 100% lemon juice should he add to a juice that is 20% lemon juice and 80% lime juice to make 4 gallons of the 50% lemon/50% lime juice mixture? A. 0.5 gallon B. 1.5 ...
December 10, 2012 by Becka
a train leaves a city heading west and travels at 50 miles per hour. three hours later, a second train laeves from the same place and travels in the same directionat 65 per hour. how long will it take for the second train to overtake first train?
January 27, 2011 by Jasmine
Ben conserves water in his home.He conserves 3 gallons each time he turns off the faucet when brushing his teeth.He conserves 30 gallons by running the dishwasher once a day instead of twice a day. What expression represents the total number of gallons,g,Ben saves each day? 3g...
April 25, 2013 by Brooke
Organizational Ethics and Social Responsibility
analyze the following ethical scenario: You are attending a National Covention in San Luis Opisbo for work. This is a convention that is annually attended by representatives from your employer and this is your first time attending. The convention registration fees and other ...
May 12, 2011 by Anita fields
The distance that light travels in 1 year (a light year) is 5.88 x 10^12 miles. If a star is 2.4 x 10^8 light years away, what is the distance to that star in miles? How would you even begin the problem?
October 3, 2009 by Anonymous
during the first part of a trip, a conoeist travels 70 miles at a certain speed. the canoeist travles 7 miles on the second part of the trip at a speed of 5 mph slower. the total time for the trip is 5 hrs. Ehat is the speed on each part of the trip?
July 6, 2012 by todd
you just got a n ew dirt bike with really advanced four stroke engine that burns fuel efficiently and you wonder what kind of gas mileage you are getting. like most dirt bikes your new machine has no odometer to record the miles traveled.The rear tire's outside diameter is ...
March 15, 2009 by roy
A 3.00 gram lead bullet travels at a speed of 240 m/s and hits a wooden post. If half the heat energy generated remain with the bullet, what is the increase in temperature of the embedded bullet? (clead = 128 J/kg C)
February 5, 2014 by Nina
Suppose your car gets 36 miles per gallon of gasoline, and you are driving 45 miles per hour. Using unit analysis, find the number of hours it takes to use 1 gallon of gas. I got 48 minutes but I'm not sure.
December 8, 2012 by ben
1.5gal/min=?qt/h Help!!!! First thing you need to do is figure out how many gallons an hour it is. Since there are 60 minutes in an hour and it's going at 1.5 gallons a minute, we can multiply 1.5 * 60. That's 90 gallons per hour. Now, just figure out how many qts are in 90 ...
April 12, 2007 by Elyssia
A car traveling 95 km/h slows down at a constant 0.80 m/s^2 just by "letting up on the gas. A) Calculate the distance it travels during the second second. B) Calculate the distance it travels during ninth second.
July 8, 2011 by mike
A plane flies with a ground speed of 160 miles per hour if there is no wind. It travels 350 miles with a head wind and in the same time it takes to go 450 miles with a tail wind. Find the speed of the wind. I'm pretty bad with word problems, but this is how I answered it: set ...
May 6, 2008 by Jennifer
Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a constant rate. At 3:00 P.M. it is 55 miles north of a city. At 4:15 P.M. it is 80 miles north of the city. If d represents the distance in miles, and t...
October 11, 2011 by Mary
At the last school pep rally 4 out of every 6 students wore school colors. Based on this information, if 120 students wore school colors, how many total students attended the pep rally? A.30 B.180 C.240 D>480 B Melissa has to drive 420 miles to arrive at her destination. ...
June 4, 2013 by Jerald
Hello, could someone help me solve/show the following algebra problem? If there's not enough info given, indicate that no solution can be found. 'Two planes leave chicago - one traveling due east and the other due west. The first travels 100 miles per hour faster than the ...
June 3, 2010 by Charlezetta
during the first part of a trip, a canoeist travels 47 miles at a certain speed. the canoeist travels 16miles on the second part of the trip at a speed 5mph slower. the total time for the trip is 4 hours. what was the speed on each part of the trip.
April 11, 2011 by tricia
Speed of passenger train is 6mph faster than the freight train. The passenger train travels 260 miles at the same time the freight train travels 230 mph. WHAT would be the speed of both the passenger and freight trains?????
December 13, 2011 by Chelsea
MATHHH!!!! PLEASE HELP
An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two trains traveling? ...
October 24, 2012 by awade
Problem 4- Speedy car, driving at 30 m/s. The driver suddenly observes a slow-moving van 155 m ahead traveling at 5 m/s in the same direction. The driver of the car immediately applies the brakes causing a constant acceleration of 2 m/s2 in a direction opposite to the cars ...
September 29, 2013 by Maryam
Courtnytravels south on her bicycle riding 8 miles per hour. One hour later, her friend Horacio starts riding his bicycle from the same location. If he travels south at 10 miles per hour, how long will it take him to catch Courtney?
August 18, 2010 by Ola
1. Suppose you are at the gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation: a) What does the number 3.03 represent? The amount of gas gallons that you pumped b) Find C(2) c) Find C(9) ...
November 27, 2009 by Anonymous
Solve the problem. The volume V of a gas varies inversely as the pressure P on it. The volume of a gas is 240 cm3 under a pressure of 23 kg/cm2 What will be its volume under a pressure of 30 kg/cm2?
February 25, 2009 by tony
PLEASE HELP MEEE!!!!
A canoe in still water travels at a rate of 12 miles per hour. The current today is traveling at a rate of 2 miles per hour. If it took an extra hour to travel upstream, how far was the trip one way? about 33 about 35 about 37 about 39
October 6, 2014 by Kitty
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
A mass M = 21.00 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 28.00 degrees with respect to the vertical, what is the acceleration a of the van?
September 25, 2011 by archi
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
2. Miniature painting continued into the Romanesque period. These paintings were found a. on the top of columns b. in churches c. in religious manuscripts d. monasteries 4. Which of the following artists used small flat planes of colors to compose a look that was three ...
January 24, 2011 by mysterychicken
A water treatment plan is built with three cylindrical tanks to contain the water for a town. Each tank has a radius of 15 feet and a depth of 25 fee. If there are about 7.5 gallons in a cubic foot of water, approximately how many gallons of water can be treated at the plant ...
February 10, 2009 by lucy
Two cars leave the same point at noon. One car travels North and the other car travels East. Suppose the North bound car is travling 40mph and after two hours, the two cars are 100 miles apart. How fast is the other car going?
November 2, 2012 by dell
Algebra distance problem
I can't figure this one out During a trip, a canoe travles 47 miles at r speed. The second part of the trip the canoe travels 9 miles, but 5 mph slower. The total trip is 5 hrs. What is the speed of each part of the trip? I start with 47/r+9/r-5=5hrs Then I multiply both sides...
February 7, 2008 by Marysvoice
Both car A and car B leave school at the same time, traveling in the same direction. Car A travels at a constant speed of 77 km/h, while car B travels at a constant speed of 89 km/h. 1. How long does it take car A to reach a gas station a distance 247 km from the school? ...
September 8, 2013 by Anonymous
I eat a 500 Calorie lunch and go hiking up a mountain afterwards. Assuming that chemical energy is converted to gravitational potential energy with 50% efficiency, approximately how many miles up the mountain can I go before I need my dinner? 0.5 miles 1 mile 2 miles 3 miles 4...
October 7, 2012 by StressedStudent
Ashley is the manager of a theater. She has $240 to spend on posters to advertise a new play. If she buys small posters only, Ashley can print 48 posters for $240. If she buys large posters only, Ashley can print 30 posters for $240. A. Write an equation that can be used to ...
November 29, 2013 by nick
In algebra right now, we're doing inverses and stuff. And I'm not sure if this problem can be solved with using an inverse formular, or just solved regularly.... Brian is rowing in a marathon. When rowing downstream, he is traveling at a rate of 10 miles per hour. While he ...
October 22, 2007 by Jen
al flynn wants to buy a van that cost 16,000 with an interst charge of 2,000. Al figures he can afford a monhtly oayment of 700 per month, If there aew 24 equal payments required could al afford the van.
May 6, 2012 by erica
It turns out that the Van Dar Waals constant b is equal to four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of the volume in a container actually occupied by Ar atoms: a) at STP b) at 100 atm pressure ...
January 9, 2011 by Anonymous
If two planes leave the same airport at 1:00 PM, how many miles apart will they be at 3:00 PM if one travels directly north at 150 mph and the other travels directly west at 200 mph? I understand that d = sqrt[300^2 + 400^2] d = sqrt[250,000] But im not sure how you get 500 ...
June 28, 2012 by Becky
Cari Bean was on her way to the islands in her yachet. Because of the waves and the currents, she was making irregular progess. The first day she traveled 100 miles. The second day she traversed 120 miles, and the third day only 90 miles. On the fourth day she made 110 miles, ...
October 23, 2012 by Terry
A small truck is to be driven 300 miles on a freeway at a constant speed of x miles per hour. Speed laws on the freeway require that a truck must be driven between 30 miles per hour and 70 miles per hour. assume that fuel cost $3.50 per gallon. in addition, assume that for a ...
April 24, 2007 by nancy
Mike makees the following table of the distances he travels during the first day of the trip. A suppose Mike continues riding at this rate. Write an equation for the distance mike travles after t hours. B sketch a graph of the equation. How did you choose the range of values ...
August 29, 2011 by david
Derive the general expression for the work per kilomole of a van der waals gas in expanding reversibly and at a constant temperature, T, from a specific volume V1 to a specific volume V2.
January 22, 2013 by Anonymous
1. 24 quarts equals 6 gallons? 2. 5 cups equals 40 quarts? 3. 8 cups equals 4 pints? 4. 81000 pounds equals 4 1/2 tons? 5. 1 quart equals 4 cups? 6. 8 gallons equals 32 quarts? 7. 32 quarts equals 8 gallons? 8. 13 quarts equals 1/4 gallons? 9. 24 full ounces equals 1/5 pints? ...
January 8, 2010 by Dakota
9)You are taking a road trip to the beach for Spring Break. You leave at 12:00pm. At 12:10 you stop for lunch 10 miles down the road. You get back on the road and travel 75 more miles and realize that you need to stop for gas. You notice that it is now 1:10pm. At this point in...
March 30, 2008 by Jon
The The speed of a passenger train is 12 mph faster then the speed of a freight train. The passenger train travels 270 miles in the same time it takes the freight train to travel 210 miles. Find the speed of each train.
February 14, 2008 by Debbie
The speed of a passenger train is 20 mph faster than the speed of a freight train. The passenger train travels 250 miles in the same time it takes the freight train to travel 150 miles. find the speed of each train.
June 3, 2011 by Francessca
The density of concentrated sulfuric acid is 1.84 g/mL. If this corresponds to 18 M, what is the molality of the solution? Molar mass= 98. 98 x 18 =1764g/L - 1.84 =1762.16/1000 = 1.76 kg 18/1.76=10.23 m But my only options are: a) 18 m b) 95.5 m c) 240 m d) 0.240 m?
May 5, 2013 by ramire2
Stem and Leaf Probability
Please advise-Thanks Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in 10ths of gallons) in a month by 25 drive-through car wash operations in Phoenix. 9 | 147 10 | 02238 11 | 135566777 12 | 223489 13 02 A. If a ...
July 23, 2008 by Fiza
During the first part of a rip a canoeist travels 43 miles at a certain speed. The canoeist ravels 19 miles on the seond part of the trip at a speed 5 mph slower. The total time for the rip is 2 hours. What is the speed on each part of the trip?
November 20, 2010 by Kim
When buying gasoline, you notice that 14 gallons of gasoline is approximately the same as 53 liters. Use this information to find a linear model that relates gallons to liters. Then use the model to find the number of liters in 25 gallons. Round your answer to the nearest tenth.
October 2, 2014 by Sue
A 1093 kg van, stopped at a traffic light, is hit directly in the rear by a 715 kg car traveling with a velocity of +2.38 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is the final velocity of ...
February 26, 2012 by Tom
A 1075 kg van, stopped at a traffic light, is hit directly in the rear by a 705 kg car traveling with a velocity of +2.06 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is the final velocity of ...
October 23, 2014 by matt
the speed of train A is 16 mph slower than the speed of train B. Train A travels 210 miles in the same time it takes train B to travel 290 miles. Find the speed of each train. Train A = 58 mph Train B = 74 mph Can you tell me if this is right
October 17, 2009 by Help
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
A straight driveway perpendicular to a straight highway leads to a house located one mile away. A truck travels past the house traveling 60 miles per hour. How fast is the distance between the truck and the house increasing when the truck is three miles past the intersection ...
October 25, 2010 by Fred
A mass M = 40.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 21° with respect to the vertical, what is the acceleration a of the van? What is the ...
December 24, 2013 by Lina
During the first part of a trip, a canoeist travels 69 miles at a certain speed. The canoeist traveled 23 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 2 hrs. What was the speed on each part of the trip?
March 28, 2012 by Terry
6th grade math
Chan drove for X miles at 45 miles an hour, Y miles at 60 miles an hour, and Z miles at 55 miles an hour. Which expression can be used to find the total numbers of hours that Chan drove? A. (45+60+55)(XYZ) B. 45X + 60Y + 55Z C. (45+60+55)/XYZ D. X/45 + Y/60 + Z/55
September 25, 2011 by Kate
Your municipality withdraws 10,000 gallons per day from an aquifer that originally held 1,000,000 gallons. The recharge rate to the aquifer is 2,000 gallons per day. Determine how long it will take before the aquifer is depleted
August 2, 2012 by Nick
You pull out the plug from the bathtub. After 40 seconds, there are 13 gallons of water left in the tub. One minute after you pull the plug, there are 10 gallons left. Assume that the number of gallons varies linearly with the time since the plug was pulled. Write the ...
August 18, 2013 by Preston
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. How many gallons of water leak out of the ...
April 30, 2008 by POD
i really need the answer quickly 1. Linda travels by car around one city to another with different constant speeds between pairs of cities. She travels for 35 min at 84 km/h, 17 min at 105 km/h and 50 min at 42 km/h and spends 25.0 min eating lunch and buying gas a) Determine ...
February 19, 2011 by alya
Data managment math
1:There are 7 seats in the family new van. if 4 of the 7 family members can drive,how many possible seating arrengements are there for a family trip in the van? 2:How many even five digit numbers can be formed using only the numbers through 1 and 7?
January 21, 2008 by Samir
math (a whoole lot)
the el paso middle school girls basketball team is going from el paso to san antonio for the texas state championship game. the trip will be 560 miles.their bus travels at an average speed of 60 miles per hour.suppose the bus travels at an almost steady speed throughoout the ...
October 2, 2006 by chemiii
A student accelerates from rest at a rate of 3 miles/min^2. How far will the car have traveled at the moment it reaches a velocity of 65 miles/60 min? a(t) = 3 miles/min^2 so v(t) = 3t + k miles/min but when t=0, v=0 so k=0 then v(t)=3t d(t) = 3/2 t^2 + c but when t=0 d, the ...
April 5, 2007 by Andrea