Wednesday

July 23, 2014

July 23, 2014

Number of results: 72,000

**high school**

How many revolutions are made by a 28inch bicycle wheel min over one mile
*October 14, 2010 by maria*

**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*

**calculus**

a road that runs perpendicular to a highway leads to a farmhouse located one mile off the highway an automobile travels down the highway past the road leading to the farmhouse at a speed of 60 mph how fast is the distance between the farmhouse an automobile increasing when the...
*March 1, 2013 by diego*

**physics**

The volume flow rate in an artery supplying the brain is 3.10 10-6 m3/s. (a) If the radius of the artery is 4.50 10-3 m, determine the average blood speed. 1 m/s (b) Find the average blood speed at a constriction in the artery if the constriction reduces the radius by a factor...
*December 12, 2010 by sarah*

**math**

A man is walking at an average speed of 4 miles per hour alongside a railroad track. A freight train, going in the same direction at an average speed of 30 miles per hour, requires 5 seconds to pass the man. How long is the freight train? Give your answer in feet. What would ...
*October 5, 2010 by Amy*

**algebra please help**

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle can travel 32 miles per...
*February 17, 2011 by Carly*

**Physics**

An automatic drier spins wet clothes at an angular speed of 4.8 rad/s. Starting from rest, the drier reaches its operating speed with an average angular acceleration of 3.6 rad/s2. How long does it take the drier to come up to speed?
*March 6, 2008 by Zach*

**physics**

An automatic dryer spins wet clothes at an angular speed of 4.4 rad/s. Starting from rest, the dryer reaches its operating speed with an average angular acceleration of 4.2 rad/s2. How long does it take the dryer to come up to speed?
*July 16, 2013 by fred*

**SCIENCE**

WHAT IS THE AVERAGE SPEED OF A BALL FALLING FROM THE HIEGHT OF 125 METERS AT THE SPEED OF 5 SECONDS TO HIT THE GROUND IN METERS PER SECOND?
*November 30, 2010 by SPARK*

**Pysics**

A caiman swims 185 meters at a speed of 6 m/s. It then enters a stream and slows to 2 m/s for 310 meters. What is the average speed of this cousin of the crocodile?
*September 14, 2013 by Carlos*

**precalc**

Write a formula for converting a measure of degrees in degrees, minutes, and seconds to a decimal number of degrees. The formula should convert, for example, 39º 5’ 34” to 39.093º. The model includes the assumption that a full degree equals 60 minutes and one minute equals 60 ...
*August 25, 2010 by Anonymous*

**Trig. application**

Hello.. In your previous solution to the question: "Dave is going for a ride on his unicycle. The radius of the wheel is 25.5cm. When he gets on, the valve of the wheel is at its maximum height. He pedals along a path at a speed of 30km/h. At what height will the valve be ...
*April 28, 2012 by Anonymous*

**Physics**

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.9 m until, at t = 1.56 s, it is traveling east. The car does not alter its speed during the turn. Find the car's speed. Find the change in its velocity ...
*February 7, 2010 by Max*

**physics**

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find the change in its ...
*February 14, 2010 by candace*

**physics**

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.1 m until, at t = 1.64 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find the change in its ...
*January 28, 2014 by Colin *

**math**

A thermometer reading 7 degrees C is brought into a room with a constant temperature of 29 degrees C. If the thermometer reads 15 degrees C after 4 minutes, what will it read in 6 minutes? 11 minutes?
*October 29, 2011 by Sushmitha*

**Science**

In a measurement of precipitation (rainfall), a raingauge with an orifice (collector) area of 30.50 in2 collects 1.30 litres of water over a period of 26 minutes and 45 seconds.[10] Calculate: 1) The depth (amount) of rain that fell (in mm). 2) The intensity (mm h-1) at which ...
*October 26, 2009 by Bubble*

**math**

In a measurement of precipitation (rainfall), a raingauge with an orifice (collector) area of 30.50 in2 collects 1.30 litres of water over a period of 26 minutes and 45 seconds.[10] Calculate: 1) The depth (amount) of rain that fell (in mm). 2) The intensity (mm h-1) at which ...
*October 28, 2009 by ScienceConfusion*

**English**

1. People were lining up in front of the pay phone. 2. People were standing in line in front of the pay phone. 3. People were standing in a line in front of the pay phone. (Are they all correct?) 4. I am ready to go out. 5. I am ready for going out. (Are both grammatical?) 6. ...
*June 30, 2009 by John*

**math 101**

Write and answer the hidden question. Then solve. 1. Gloria talked on her cell phone for 320 minutes the first month, 243 minutes the second month, and 489 minutes the third month. Her payment package does not allow her to pay per minute; she can only buy groups of minutes. If...
*September 21, 2011 by mathhater2192*

**Math :)**

1.Try to solve this problem without using a formula. Suppose a disease is transmitted from an individual to one other during the period of a week. Each of those two gives the disease to two more people in the second week, so that the total of newly infected people is now four...
*December 2, 2013 by Kim*

**Maths**

Calculate speed give your answers in km/p hour Distance = 18 KM Time = 12 minutes S - T
*November 6, 2011 by Tom*

**science**

you are riding your bike at 9km/h. ten minutes later; your speed is 6km/hr.
*March 31, 2012 by Britt*

**Statistics**

A forest fire is burning down a narrow valley 3 miles wide at a speed of 40 feet per minute. The fire can be contained by cutting a firebreak through the forest across the valley. It takes 30 seconds for one person to clear one foot of the firebreak. The value of lost timber ...
*January 29, 2012 by Xander*

**algebra**

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle can travel 32 miles per...
*February 13, 2011 by kathy*

**algebra**

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle can travel 32 miles per...
*February 14, 2011 by kathy*

**algebra**

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle can travel 32 miles per...
*February 14, 2011 by kathy*

**algebra**

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle can travel 32 miles per...
*October 5, 2011 by hannah*

**Science**

The rest stops the driver made are included in the calculations because that is hoe the problem is defined. However, suppose the bus driver's manager wants to know the average speed at which the driver was actually driving the bus that day while he was on the road. In this ...
*February 18, 2012 by Angelica *

**Biology**

We cut a slice of the target gene from the gel which ran electrophoresis. And then purified the gene from the gel by using Gel-M column, WN buffer and WS buffer. After these steps, we ran another electrophoresis of the purified gene and there was no band showed on the picture...
*April 11, 2010 by Holly*

**Physics**

1) A jetliner, traveling northward, is landing with a speed of 69.3 m/s. Once the jet touches down, it has 787 m of runway in which to reduce its speed to 13.6 m/s. Compute the average acceleration (magnitude and direction) of the plane during landing (take the direction of ...
*May 27, 2012 by Hannah*

**math**

Anxious Billy Bob pulled out his math recording sheet and saw the following scores 54,62,65,68,70,70,78,82,84 A. He want to calculate his average.Which measure of center is the average?compute it ? I have this :The measure of center is the average, mean 633/9=70.33=about 70% B...
*April 19, 2014 by edu*

**physics**

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 9.3 m until, at t = 1.38 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. ___ m/s (b) Find the change in ...
*February 8, 2010 by Cindy*

**Math**

Marc took 3 hours to mow a lawn, while Angelina took 150 mins to mow the same lawn a week earlier. Write the ratio of Marc's time to Angelina's time as a ratio of whole numbers. 180/150? Marc's time/Angelina's time = 3 hours/150 minutes = 180 minutes/150 minutes = 18 minuts/15...
*June 14, 2007 by Cindy*

**ALGEBRA**

A 5-mile cab ride costs $9.30. A 11-mile cab ride costs $17.70. Find a linear equation that models cost c as a function of distance d.
*March 31, 2010 by Cynthia*

**math**

Rents a van at daily rate of $19.95 plus .39/mile, another company will rent same van for $39.95 plus .29/mile. for what mileage are the costs the same?
*April 11, 2013 by rj*

**math**

Yolanda and Yoko ran in a 100 yd dash. When Yolanda crossed the finish line, Yoko was 10 yd behind her. The girls then repeated the race, with Yolanda starting 10 yd behind the starting line. If each girl ran at the same rate as efore, who won the race? By how many yards. ...
*October 27, 2011 by Kyle*

**Decision modeling**

A forest fire is buring down a narrow valley 3 miles wide at a speed of 40 feet per minute. The fire can be contained by cutting a firebreak through the forest across the valley. It takes 30 seconds for one person to clear one foot of the firebreak. The value of lost timber is...
*May 5, 2012 by anonymous*

**Math**

There are four people that want to cross a bridge. Sam can cross in 1 minute, Joe can cross in 2, Jack can cross in 5, and Steve can cross in 10. They have one flashlight, and two can cross at a time, but they must go at the same pace. So if Steve and Sam cross together, they ...
*February 26, 2012 by Jacob*

**math70**

An executive drove from home at an average speed of 30 mph to an airport where a helicopter was waiting. The executive boarded the helicopter and flew to the corporate offices at an average speed of 75 mph. The entire distance was 156 mi. The entire trip took 3 h. Find the ...
*October 22, 2011 by Helo*

**Physics**

A vessel contains 10 kg of water and an unknown mass of ice at 0°C. The temperature of the vessel is monitored for 60 minutes. During the first 50 minutes, the temperature remains at 0°C. For the next 10 minutes, the temp steadily increases from 0°C to 2°C. a. Find the rate ...
*December 8, 2011 by Megan*

**MATH/SCIENCE HELP**

1. In a measurement of precipitation (rainfall), a raingauge with an orifice (collector) area of 30.50 in2 collects 1.30 litres of water over a period of 26 minutes and 45 seconds.[10] Calculate: a. The depth (amount) of rain that fell (in mm). b. The intensity (mm h-1) at ...
*October 23, 2009 by RANI*

**Environmental Science**

In a measurement of precipitation (rainfall), a raingauge with an orifice (collector) area of 30.50 in2 collects 1.30 litres of water over a period of 26 minutes and 45 seconds. Calculate: a. The depth (amount) of rain that fell (in mm). b. The intensity (mm h-1) at which the ...
*October 29, 2009 by Please Help*

**math**

by how many order of magnitute is the speed of light greater than the average speed of grey sound? Rose Diamond when he set the hight gate track 710 m record of for this 47.43 sec in April 2003 710m/47.43s = close to 15 m/s. The speed of light is 3 x 10^8 m/s or 30 x 10^7 m/s...
*October 16, 2006 by math*

**physics**

Please decide which of the following statements for car collisions are true or false. 1)Crumple zones on cars are parts of the front of the car that are designed to receive maximum deformation during a head-on collision. The essential safety benefit of crumple zones results ...
*April 11, 2012 by Marc*

**English**

Thank you for your help. Can you help me find the mistakes in this paragraph please? 1) Last week we tried to go to the stadium, but during the trip we ran into very strange problems 2) First of all, a tyre burst, so we stopped the car, and we tried to change the wheel with a ...
*January 23, 2010 by Franco*

**physics**

it takes you 8.8 minutes to walk with an average velocity of 1.3 m/s to the north from the bus stop to the museum entrance. how far did you walk? answer in units of m
*September 23, 2011 by jasmin*

**maths urgent please**

A vessel is being filled at a variable and the volume of liquid in the vessel at any time t is given by V = A( 1- e^-kt) V a) Show that dV/dt = k(A-V) b) if one quarter of the vessel is filled in 5 minutes, what fraction is filled in the next 5 minutes? c) show that lim (x->...
*July 17, 2012 by Michelle*

**math**

One thousand three hundred and twenty feet are what part of a mile? Answer has to be in lowest terms.
*April 6, 2010 by Anonymous*

**science one question? **

3. Which of the following is an example of a SI unit for distance? (1 point) mile meter second inch
*March 13, 2014 by TTR+S<3 *

**Calculus Help Please!!! Check **

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round the answers to two decimal place.) (a) What is the temperature of the drink after 60 minutes? (b) When will its temperature be ...
*April 2, 2014 by Tenshi*

**Math**

TRIATHLONS Irena is training for an upcoming triathlon and plans to run 12 miles today. Jorge offered to ride his bicycle to help her maintain her pace. If Irena wants to keep a steady pace of 6.5 minutes per mile, how fast should Jorge ride in miles per hour? Thank you so ...
*May 10, 2011 by Gabi*

**physics help please!**

A race car is one lap behind the lead race car when the lead car has 57 laps to go in a race. If the speed of the lead car is 66.2 m/s, what must be the average speed of the second car to catch the lead car just before the end of the race (i.e., right at the ﬁnish line...
*September 3, 2012 by Amanda*

**Math**

How would you solve this word problem in one variable inequality form? One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend minutes. Another company offers a plan that costs $19.99 and charges 35 cents per minute during nights ...
*September 25, 2013 by Leah*

**Math**

Hi can someone help me with this question. This is on my review. Thanks! The monthly cost C, in dollars, for international calls on a certain cellular phone plan is modeled by the function where x is the number of minutes used. (a) What is the cost if you talk on the phone for...
*March 10, 2014 by Matt*

**precal**

Write a formula for converting hours, starting with midnight as zero, to a decimal number of degrees. Assume that a full day equals 360º, 60 minutes equals one hour, and 60 seconds equals one minute. Use x, y, and z to represent hours, minutes, and seconds respectively. Use T ...
*August 28, 2010 by Anonymous*

**MATH URGENT!!!**

A researcher is interested in the effects of monetary incentives on task performance. She recruits 60 undergraduate business students and offers to pay them each $5 for a 1 hour research session. She then randomly assigns these students to either a control group or an ...
*November 21, 2011 by Jill*

**statistics**

The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10 minutes. Using the 68-95-99.7 rule, if students are given 90 minutes to complete the exam, what percentage of students will not finish?
*April 13, 2010 by abby*

**statistics**

Times for a surgical procedure are normally distributed. Method A has a mean of 28 minutes and a standard deviation of 2 minutes for completion. What is the probability that a surgical procedure conducted by method A takes at most 33 minutes to complete?
*March 17, 2012 by Matthew*

**Precalculus**

A nautical mile equals the length of arc subtended by a central angle of 1 minute on a great circle on the surface of Earth. If the radius of Earth is taken as 3960 miles, express 1 nautical mile in terms of ordinary, or statute, miles.
*January 12, 2012 by Jillian*

**Physics**

A hockey puck is hit on a frozen lake and starts moving with a speed of 12.2 m/s. Ex- actly 6.70 s later, its speed is 6.20 m/s. The acceleration of gravity is 9.81 m/s2 . a) What is its average acceleration? Answer in units of m/s2
*February 3, 2014 by Charlie*

**physics**

A baseball has a mass of about 0.14 kg, and it is pitched towards home plate at a speed of about 46 m/s. If the bat exerts an average force of 9500 N for 1.7 ms, what is the final speed of the ball in m/s?
*February 23, 2014 by Jacob Szczepanski*

**math**

It took Aaron 4 hours to drive 232 miles. Use the equation below to determine what his average rate of speed was. D = r x t D = distance, r = rate of speed, t = time
*May 1, 2014 by Anonymous*

**algebra 2**

A chauffer must decide between driving his clients in the rolls royce or the mercedes benz. the rolls royce costs 1.75 per mile to operate and the mercedes benz costs 2.00 per mile. The chauffer can charge 4.00 per mile for the rolls royce and 6.50 per mile for mercedes benz. ...
*January 24, 2013 by Elizabeth*

**algebraic expression**

Whitney is speaking to four different classes at the local grade school . She will spend m minutes with each class, and she will have to wait 30 minutes before seeing the last group. How many minutes will Whitney spend at the school? Thank you.
*July 13, 2014 by S. Fuentes*

**Algebra**

If it takes Mary 45 minutes to basic cleaning of her house, and it takes her daughter 65 minutes to do the same basic cleaning, then how many minutes will it take for them to clean together? Can I please get help with ho to set the equation up?
*January 23, 2011 by Anonymous*

**Algebra**

If it takes Mary 45 minutes to basic cleaning of her house, and it takes her daughter 65 minutes to do the same basic cleaning, then how many minutes will it take for them to clean together? Can I please get help with ho to set the equation up?
*January 23, 2011 by Anonymous*

**chemistry**

The conversion factor relating miles to meters is 1 mile= 1610m The speed of light is 3.00×10^8 m/s. How fast is this in miles per hour (miles/h \rm miles/h)?
*September 8, 2013 by randy*

**physics**

A car moves at a constant speed of 24m/s. How long (in minutes) will it take to travel 15.0 km?
*August 10, 2011 by Martha*

**MATHEMATICS_motion**

Find the speed of a train if an increase of 6kph lowers the time for a journey of 72 km by 10 minutes.
*February 7, 2012 by PDF*

**MATHEMATICS_algebra**

Find the speed of a train if an increase of 6kph lowers the time for a journey of 72 km by 10 minutes.
*February 7, 2012 by PDF*

**physics**

Sally travels by car from one city to another. She drives for 30.0 min at 80 km/h, 12 min at 105 km/h, and 45 min at 40 km/h. She spends 13.0 min eating lunch and buying gas. what the average speed for the trip?
*October 11, 2010 by Anonymous*

**math**

a park has 4 hiking trails. Trails A and B go from the lodge to the dock. Trail A is 1/2 mile long, and Trail B is 2/3 mile long. Trails C and D go from the dock to the park entrance. Trail C is 1/4 mile long and trail D is 1/3 mile long. Draw a picture of the possible trails...
*December 4, 2013 by Anonymous*

**math**

a park has 4 hiking trails. Trails A and B go from the lodge to the dock. Trail A is 1/2 mile long, and Trail B is 2/3 mile long. Trails C and D go from the dock to the park entrance. Trail C is 1/4 mile long and trail D is 1/3 mile long. Draw a picture of the possible trails...
*December 4, 2013 by Anonymous*

**Physics**

When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 75 kg man just before contact with the ground has a speed of 6.1 m/s. (a) In a stiff-legged ...
*January 12, 2012 by Alexis*

**physics**

A pump slowly lifts 3.0*10^6 kg of water an average distance of 80.0m in 12minutes. 1) how much work is done in the first 12 minutes? 2)How much power is delivered by the pumps?
*November 8, 2012 by Anonymous*

**Math**

It took a boat 6 h to travel 84 km up a river against the current but only 4 h and 12 minutes for the return trip with the current. Find the speed of the boat in still water and the speed of the current water.
*May 27, 2012 by Henry P*

**Math**

Jonathan can type a 20 page document in 40 minutes, Susan can type it in 30 minutes, and Jack can type it in 24 minutes. Working together, how much time will it take them to type the same document?
*February 15, 2011 by Molly*

**Algebra**

One person can complete a task in 3 minutes. A second person can complete the same task in 5 minutes. How long will it take to complete the task of the two people work together?
*April 15, 2014 by Anonymous*

**math**

Irena is training for an upcoming triathlon and plans to run 12 miles miles today. Jorge offered to ride his bicycle to help her maintain her pace. If Irena wants to keep a steady pace of 6.5 minutes per mile, how fast should Jorge ride in miles per hour?
*December 3, 2012 by deborah*

**Algebra**

Can you help me set this up? Mr. Smith could ride his 10-speed bike 4.8 miles to his mom's house in 11 minutes. His return trip home took 14 minutes. The times are different due to there being a slight downhill slope on part of the trip to his mom's house. If Mr. Smith was ...
*December 12, 2012 by Kate*

**Math**

Now can you please tell me if I am right for the following problems: The speed of rain is about 1,100 feet per second. If you observe a flash of lighting and then hear the thunder 5 seconds later how far away from you did the lighting strike? Is this less or more than a mile...
*August 18, 2005 by giggly child*

**Physics III**

The “average” driver drives ~15,000 miles per year. Let’s assume ~10,000 miles of that is interstate driving. Using your models from parts (b) and (c) again, how much does the average driver spend per year if their average speed is 55 mph, 65 mph, and 75 mph? 15K/10K and then ...
*March 4, 2013 by Henry*

**Science**

If oxygen, Carbon dioxide, and xenon gases are heated at 500k with a probable particle speed of 1094 and an average particle speed of 1234, what id the mass of an atom or molcule for each?
*July 20, 2012 by Carolyn*

**physics**

When the string is pulled a distance of 40 cm in 2.50 s, the wheel turns though 5 revolutions. What is the average speed of the string, and what is the average angular velocity of the wheel? What is the radius of the wheel?
*March 6, 2012 by Amy*

**college math**

It takes Mike 8 minutes to walk to the store from his house. The return trip takes 13 minutes because he walks 1mph slower due to the bags he is carrying. How fast did Mike walk on his way to the store? Carry out one decimal place. Thanks in advance!
*April 5, 2013 by Lorie*

**Climograph**

On one of my problems it says: What is the average temperature in January for each place? On one climograph, the average temperature is 40 and the other climograph is 50. So, do I just put the average temperature in January in each place is 40-50?
*May 21, 2013 by Celest*

**Pre algebra**

A cyclist rides her bike at a speed of kilometers per hour. What is this speed in kilometers per minute? How many kilometers will the cyclist travel in minutes? Do not round your answers.
*April 26, 2014 by David*

**Algebra 2**

A factory is producing DVD and Blu Ray discs. For each case of DVDs they make $180 profit. For each case of Blu Ray they make $250. The DVDs take 3 minutes of machine time and 7 minutes of labor. The Blu Rays take 4 minutes of machine time and 12 minutes of labor. The maximum ...
*January 31, 2012 by Precious*

**statistics**

An automobile shop manager times six employees and found that the average time it took then to change a water pump was 18 minutes. The SD of the sample was 3. Find the 99% of the interval of the true mean.
*March 6, 2011 by katelyn*

**math**

distance of 12 km was walked at a speed of 4 km/h on the way, and 6 km/h on the way back.What was the average speed?
*October 20, 2012 by wan*

**let's try this again - precal**

Write a formula for converting hours, starting with midnight as zero, to a decimal number of degrees. Assume that a full day equals 360º, 60 minutes equals one hour, and 60 seconds equals one minute. Use x, y, and z to represent hours, minutes, and seconds respectively. Use T ...
*August 28, 2010 by Anonymous*

**PHYSICS**

An odometer in a car has a reading of 50 km at the beginning of a trip and a reading of 125 km half an hour later. What is the average speed of the car? A. 3.75 km/h B. 62.5 km/h C. 1250 km/h D. 250 km/h The only way to find the average speed is to divide the total distance by...
*July 21, 2010 by Anonymous*

**math**

one thousand three hundred twenty feet are what part of a mile? give answer in lowest term
*September 6, 2007 by Anonymous*

**Precalculus**

1. A plane takes off, making an angle of a = 17° with the ground. After the plane travels m = one mile along this flight path, how high (in feet) is it above the ground?. (Round your answer to one decimal place.)
*December 13, 2010 by Anonymous*

**Physics**

You and your friends are organizing a trip to Europe. Your plan is to rent a car and drive through the major European capitals. By consulting a map you estimate that you will cover a total distance of 5000 \rm km. Consider the euro-dollar exchange rate given in the ...
*January 23, 2010 by John*

**physics**

A person walks first at a constant speed of 4.90 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 2.70 m/s. (a) What is her average speed over the entire trip?
*August 31, 2010 by mattie*

**physics**

A person walks first at a constant speed of 4.90 m/s along a straight line from point A to point B and then back along the line from B to A at a constant speed of 2.70 m/s. (a) What is her average speed over the entire trip?
*August 31, 2010 by mattie*

**Algebra**

George paid $31.25 in taxi fare from the airport to the hotel. The cab charged $3.75 for the first mile plus $2.50 for each additional mile. The equation to find the number of miles, m, from the airport to the hotel would be: a. 3.75 + 2.50m + 31.25 = 37.50 b. 3.75 + 2.50m = ...
*March 11, 2008 by Mike*

**Navigation**

What is the necessary rate of turn ,for a vessel that moves with a speed of 25 miles per hour to complete a 90 degrees turn ,starting the turn 1 mile prior of the way point of altering course?
*November 27, 2009 by Dimitris*

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