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Question 103462: Word problems are not my stong suit...please help.
A plane flies 720 mi against a steady 30-mi/hr headwind and then returns to the same point with the wind. If the entire trip takes 10 h., what is the plane's speed in still air?
Click here to see answer by checkley75(3666)

Question 103484: Kim traveled a total of 10 km. in 50 minutes.
Sasha traveled 10 km. in 55 minutes.
Barry did 10km. in 60 minutes.
What is their average speeds?
Click here to see answer by checkley75(3666)

Question 103439: A car travels a distance of 1742 miles at an average rate of 40 mph and returns at an average rate of 55 mph. Find the average rate for the round trip to the nearest tenth?
Click here to see answer by checkley75(3666)

Question 103445: two cyclists, 90 km apart, start riding toward each other at the same time. one cycles twice as fast as the other. If they meet 2 hours later at whatspeed are they traveling?
Click here to see answer by checkley75(3666)

Question 103379: Robert can drive 40 miles using the side roads in the same time that it takes to travel 30 miles on the freeway. If Robert's rate on the side road is 7 miles an hour faster than his rate on the freeway, find his rate on the side road. I need help contructing the equation to solve for the rate. I am confused because there is no time given.
Click here to see answer by scott8148(6628)

Question 103550: A cyclist rides D km at a rate of X km/hr and returns D km at a rate of Y km/hr. Write an expression representing the average rate in terms of X,Y and D. Simplify this expression if you can.
rate=distance/time
Total distance = 2D
rate=Total Distance/Total Time
I can't figure out how to get the total time in terms of X and Y. Can you help?
Thanks!
Click here to see answer by stanbon(75887)

Question 103361: A bicyclist rode into the country for 5 h. In returning, her speed was 5 mi/h faster and the trip took 4 h. What was her speed eacy way?
Click here to see answer by ankor@dixie-net.com(22740)

Question 103606: An airplane flies 1,000 due east in 2 hours and 1,000 due south in 3 hours. What is the average speed of the airplane?
This is what I did:
((1,000/2)+(1,000/3))/2
Click here to see answer by edjones(8007)

Question 103623: It takes 175 seconds for Sarah to walk from her house to the store and back. Going there she walks at 3 ft/sec and on the way back at 4 ft/sec. How long did it take her to walk to the store?
Click here to see answer by stanbon(75887)

Question 103532: two people in a canoe travel 6 mi upstream against a 2mi/h current. They then returned to the same point downstream. If the entire trip took 4 hours, how fast can they paddle in still water?
Click here to see answer by ptaylor(2198)

Question 103605: To get to work Sam jogs 3 kilometers to the train, then rides the remaining 5 kilometers. If the train goes 40 km per hour faster than Sam's constant rate of jogging and the entire trip takes 1/2 hour how fast does Sam jog?
Click here to see answer by ankor@dixie-net.com(22740)

Question 103764: During rush hour, Fernando can drive 40 miles using the side roads in the same time that it takes to travel 30 miles on the freeway. If Fernando's rate on the side roads is 7 mi/h faster than his rate on the freeway, find his rate on the side roads.

Click here to see answer by scott8148(6628)

Question 103755: A consultant traveled 8 hours to attend a meeting. The return trip took only 7 hours because the speed was 3 miles per hour faster. What was the consultant's speed each way?
Click here to see answer by oberobic(2304)

Question 103824: Mr. West drove his car from home to Chicago at the rate of 40 mph. and returned at a rate of 45 mph. If his time going exceeded his time returning by 30 minutes, find his time going and his time returning.

time going:
time returning:

Thanks!!
Click here to see answer by scott8148(6628)

Question 103905: Jason traveled 120 miles at an average rate of speed. If he could have increased his speed 25 mph, he could have covered the same distance in 2/5 of an hour less time. How fast did he travel?
Click here to see answer by checkley75(3666)

Question 103901: a boat has a speed of 15 mph in still water. It travels downstream from Greentown, in three-fifths of an hour. It then goes back upstream from Glenavon to Cambria, which is two miles downstream from Greentown, in three fithts of an hour. Find the rate of the current.
Click here to see answer by stanbon(75887)

Question 103893: Doomstown is 200 miles due west of Sagebrush, and Joshua is due west of Doomstown. At 9 A.M. Mr Archer leaves Sagebrush for Joshua. At 1 P.M. Mr. Sassoon leaves Doomtown for Joshua. If Mr. Sassoon travels at an average speed 20 mph faster than Mr Archer and they reach Joshua at 4 pm, how fast is each traveling?
Click here to see answer by ankor@dixie-net.com(22740)

Question 104015: Does it take twice as far to stop a car that is going twice as fast? Explain.
Click here to see answer by scott8148(6628)

Question 104098: The distance between Buffalo, New York and Chicago, Illnois is 600 miles. On a US road atlas, this distance is represented by 10 inches. On the same atlas, the distance between Chicago and Denver, Colorado is 18 inches. What is the distance between Chicago and Denver?
Click here to see answer by jim_thompson5910(35256)

Question 104201: Two cars leave town going opposite directions. One car is traveling 55 mph, and the other is traveling 65 mph How long will it take before they are 180 miles apart?
Click here to see answer by checkley75(3666)

Question 104207: Richie put on his jogging shoes and speed-walked to the park at 5 miles per hour. Then he ran back at 9 miles per hour. If the total trip took 4 2/3 hours, how far was it to the park?
Click here to see answer by checkley75(3666)

Question 104199: Sunset rents an SUV at $21.95 plus $0.23 per mile. Sunrise rents the same vehicle for $24.95 plus $0.19 per mile. For what mileage is the cost the same?
Click here to see answer by checkley75(3666)

Question 104205: A kayaker paddled 2 hours with a 6 mph current in a river. The return trip against the same current took 3 hours. Find the speed the kayaker would make in still water.
Click here to see answer by scott8148(6628)

Question 104204: A kayaker paddled 2 hours with a 6 mph current in a river. The return trip against the same current took 3 hours. Find the speed the kayaker would make in still water.
Click here to see answer by scott8148(6628)

Question 104203: A kayaker paddled 2 hours with a 6 mph current in a river. The return trip against the same current took 3 hours. Find the speed the kayaker would make in still water.
Click here to see answer by scott8148(6628)

Question 104329: A consultant traveled 8 hours to attend a meeting. The return trip took only 7 hours because the speed was 3 miles per hour faster. What was the consultant�s speed each way
Click here to see answer by stanbon(75887)

Question 104333: A car travels at 40 km/h 30 minutes and 60 km/h for 15 minutes. How far does it travel in this time?
Click here to see answer by elima(1433)

Question 104439: This is a wind velocity problem. A plane can fly 340 miles per hour in still air. If it can fly 200 miles downwind in the same amount of time it can fly 140 miles upwind, find the velocity of the wind.
Click here to see answer by stormy(4)

Question 104324: Two friends live 60 miles apart. They ride their bikes to meet each other. Sally heads east at 21 mph. Therese heads west riding at a rate of 15 mph. How far does each cyclist ride in t hours. Write and solve an equation to find when they meet.
Click here to see answer by ankor@dixie-net.com(22740)

Question 104556: a bullet shot straight up is s feet above the ground in t seconds
[[[[where s=f(t)=-16t^2 + 265t]]]]. find the height of the bullet 3 seconds after it is shot
Click here to see answer by checkley75(3666)

Question 104538: bob makes 20 drinks in five minutes, sarah makes 20 drinks in 10 minutes, and Gary makes 20 drinks in 15 minutes. How long will it take them to make the 20 drinks if they were working together?
Click here to see answer by edjones(8007)

Question 104624: marla begins walking at 3 mi/h toward the library. her friend meets her at the halfway point and drives her the rest of the way to the library. the distance to the library is 4 miles. how many hours did marla walk?
Click here to see answer by stanbon(75887)

Question 104520: If you throw a ball straight up with a speed of 20 m/s how fast will it be moving when you catch it ?
Click here to see answer by scott8148(6628)

Question 104935: Question : A twin-engine plane can fly 800 mi in the same time that it takes a single-engine plane to fly 600 mi. The rate of the twin engine plane is 50 miles faster than that of the single engine plane. Find the rate of the twin engine plane.
This is what I have tried:
distance/time=rate.
Twin engine 800 50+r
Single engine 600 50-r
So 800/50+r & 600/50-r
(50+r)(50-r)800/50+r=(50+r)(50-r)600/50-r
(50-r)800=(50+r)600
40000-800=30000+600
-1400=-10000
r=?
I have been trying to find wesites that could help me with this problem all week. The week for this problem is over tomorrow, October 18,2007, at 11:59pm.
Please help me ASAP! I have many other questions that need answering and I am looking forward to someone helping me out.
Click here to see answer by ankor@dixie-net.com(22740)

Question 104984: The time in seconds that it takes for an object to fall to the ground from a building that is 1400 ft high.
t=1/4 sqrt s
any help would be greatly appreciated.
Click here to see answer by checkley75(3666)

Question 104939: Brittani and Lea, two cyclists, start simultaneously. Brittani at point A and Lea at Point B. They travel toward each other at constant sppeds. They pass each other in 30 minutes, and Brittani, headed for point B, arrives there in another 20 minutes. How many minutes after brittani arrives at point B will Lea arrive at Point A?
Click here to see answer by ankor@dixie-net.com(22740)

Question 105126: Ching leaves San Francisco and travels toward Los Angeles at 50 miles/hour. An hour later, Phil leaves Los Angeles and travels toward San Francisco at 60 miles/hour. If the two cities are 380 miles apart, how many hours will it take for Ching to meet Phil?
Click here to see answer by checkley75(3666)

Question 105229: How long must a guywire be to run from the top of a 18ft pole to a point on the ground 12 feet away?
Have have not a clue.
Click here to see answer by edjones(8007)

Question 105278: One carpenter can complete a kitchen in 8 days. With the help of another carpenter, they can do the job toegether in 4 days. How long would it take the second carpenter if he worked alone?
Would you set it up like this?
x/4-x/8=1
Click here to see answer by scott8148(6628)

Question 105277: A boat travels 45 mi to an island and 45 mi back again. Changes in the wind and tide made the average speed on the return trip 3 mph slower than the speed on the way out. If the total time of the trip took 6.75 hr, find the speed going to the island and the speed of the return trip.
Word problems are a problem for me. Do you set this up as 45x=45x-3??

Click here to see answer by scott8148(6628)

Question 105335: an athlete throws a javelin from height of 1.5 meters the horizontal velocity is 9.8 meters per second. (Assume the accerlation due to gravity is 9.8 meters per second).
a) Write a parametic equation that describes the position of the javelin at time t.
Click here to see answer by scott8148(6628)

Question 105482: Tom and John drive 258 miles in 5 hours. Tom drives for the first part, and John drives for the second part. How long did Jon drive for?
Click here to see answer by checkley75(3666)

Question 105585: A window washer accidentally drops a bucket from the top of a 64-foot building. The height (h) of the bucket after t seconds is given by the following formula: h=-16t^2+64. How long will it take for the bucket to hit the ground?
Click here to see answer by Fombitz(32388)

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27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240, 30241..30285, 30286..30330, 30331..30375, 30376..30420, 30421..30465, 30466..30510, 30511..30555, 30556..30600, 30601..30645, 30646..30690, 30691..30735, 30736..30780, 30781..30825, 30826..30870, 30871..30915, 30916..30960, 30961..31005, 31006..31050, 31051..31095, 31096..31140, 31141..31185, 31186..31230, 31231..31275, 31276..31320, 31321..31365, 31366..31410, 31411..31455, 31456..31500, 31501..31545, 31546..31590, 31591..31635, 31636..31680, 31681..31725, 31726..31770, 31771..31815, 31816..31860, 31861..31905, 31906..31950, 31951..31995, 31996..32040, 32041..32085, 32086..32130, 32131..32175, 32176..32220, 32221..32265, 32266..32310, 32311..32355, 32356..32400, 32401..32445, 32446..32490, 32491..32535, 32536..32580, 32581..32625, 32626..32670, 32671..32715, 32716..32760, 32761..32805, 32806..32850, 32851..32895, 32896..32940, 32941..32985, 32986..33030, 33031..33075, 33076..33120, 33121..33165, 33166..33210, 33211..33255, 33256..33300, 33301..33345, 33346..33390, 33391..33435, 33436..33480, 33481..33525, 33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620