
Math
20. The time t required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 1.64 hours b. about
asked by Anonymous on May 23, 2014 
Math
The time t required to drive a certain distance varies inversely with the speed r. If it takes 4 hours to drive the distance at 35 miles per hour, how long will it take to drive the same distance at 45 miles per hour? about 3.11 hours********* 140 hours
asked by Mike on May 11, 2016 
mathematics
The cost of making a dress is partly constant and partly varies with the amount of time it takes to make the dress.If the dress takes 3 hours to make ,it costs 2700 naira. If it takes 5 hours to make the dress, it costs 3100 naira. Find the cost if it
asked by david t on June 23, 2020 
math
Three water pipes are used to fill a swimming pool. The 1st pipe alone takes 8 hours to fill the pool, the 2nd pipe alone takes 12 hours to fill the pool, and the 3rd pipe takes 24 hours to fill the pool. If all 3 pipes are opened at the same time, how
asked by bob on May 26, 2011 
Teaching in Early childhood progras
1)When children rely on outside controls to guide their actions, they're operating at the _______ level of selfregulation. A. adherence B. amoral C. internalization D. identification 2)Which statement most accurately describes the Developmentally
asked by Eva on August 18, 2014 
3 questions Math
18. What is the simpler form of the following expression? (6x^3  1x +1) divided by (2x + 1) 3x^2 + 2x  1 3x^2  2x + 1 3x^2 + 2x  1 3x^3 + 2x  1 19. Solve the equation. 1/2x + 14  9/x + 7 = 6 x =  101/12 x = 101/12 x =  67/12 x = 67/12 20. The
asked by This Girl on June 13, 2014 
5th grade math
It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower? 1/4answer
asked by Beverly on March 5, 2015 
Algebra 1
The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 2 hours to drive the distance at 67 miles per hour, how long will it take to drive the same distance at 55 miles per hour? about 1.64 hours about 134.00 hours
asked by rei on May 21, 2018 
Algebra
The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 7 hours to drive the distance at 55 miles per hour, how long will it take to drive the same distance at 65 miles per hour? • about 6.25 hours • about
asked by Sandra on May 4, 2014 
math
Suppose that the time (in hours) required to repair a machine is an exponentially distributed random variable with parameter λ (lambda) = 0.5. What's the probability that a repair takes less than 5 hours? AND what's the conditional probability that a
asked by raksha on October 28, 2007 
statistics
The time it takes Jessica to bicycle to school is normally distributed with an average of a third of an hour and a variance of 9 minutes. Jessica has to be at school at 8:15 am. What time should she leave the house so she will be late on 5% of the time?
asked by Pat on March 27, 2012 
Math
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean
asked by angela on May 4, 2016 
algebra
An airplane takes off from an airport and takes 6.5 hours to fly west (against the wind current) 2600 miles. The return trip (with the wind current) takes 5.2 hours. Find the airspeed and the wind speed.
asked by McKenzie on February 27, 2014 
Math HELP!!!!!
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean
asked by angela on May 5, 2016 
math
Nelia takes 3/4 hour dress and get ready for school. it takes her 4/5 hour to reach school. if her class starts promptly at 8:15 am, what is the latest time she can jump out of bed in order not to be late for school?
asked by Arvee on September 15, 2016 
MATH
A musical instrument company reduced the time it takes for a worker to build a guitar. Before the reduction it took 5 hours. Now in 7 hours they can build 3 guitars. By how much did they reduce the time it takes to build each guitar?
asked by Hadeel on March 24, 2020 
math
if julie takes 4 hours to type up a manuscript and pat takes 6, if they work together at 12:00, what time would they finish??
asked by Anonymous on October 25, 2010 
math
A man can paint a fence in 8 hours. Another man can paint that fence in only 7 hours. A third man can paint that fence in only 5 hours. How long will it take for all three men to paint the fence? in one hour, man1 can paint 1/8 of the fence, man2 can pain
asked by bob on December 5, 2006 
Physics
You are driving home on a weekend from school at 65mph for 130 miles. It then starts to snow and you slow to 45 mph. You arrive home after driving 4 hours. How far is your hometown from school? First I found the time with d/v=t so 130/65= 2 hours Then I
asked by Tammy on September 11, 2007 
Math
It takes Marty 11/4 hours to get ready for school. If 1/5 of that time is used to shower and 1/3 of that time is used to eat breakfast, how long does it take him to shower and eat breakfast?
asked by Jamie on March 21, 2019 
Health
Read the passage below, and then answer the questions that follow. "As Marty pulled away from the curb, he thought about Sina's answer. He didn't understand it. Her response was ambiguous. Marty thought that maybe she wouldn't skip school with him and his
asked by Anonymous on October 17, 2013 
math
5. A bus on a regular schedule takes 3 1/4 hours to reach its destination. The express bus takes 2 1/2 hours to make the same trip. How much travel time can be saved by taking the express? A. 1 1/4 hours B. 3/4 hour C. 2 hours D. 5 3/4 hours it C right?
asked by lola on May 16, 2013 
Physics
You are driving home on a weekend from school at 65mph for 130 miles. It then starts to snow and you slow to 45 mph. You arrive home after driving 4 hours. How far is your hometown from school? First I found the time with d/v=t so 130/65= 2 hours I used d=
asked by Tammy on September 12, 2007 
Statistics
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Cavalier shows that the mean is 4.5 hours and the standard deviation is .6 hours. If 42 mechanics are randomly selected, find the probability that their mean rebuild
asked by Elizabeth on July 20, 2015 
math
This is the question that is on my worksheet If Stephanie is scheduledto begin practiceat 12:30p.m., what is the latest time in which she could start getting ready to leave? How long does it take Stephanie to get ready? How long does it take Stephanie to
asked by Brooke on November 30, 2006 
math
if the teacher begins recording on a digital camera with an hour available,is there enough time to records everyone if she gives a 15 minutes introduction at the beginning of class and every student takes a minute to get ready?
asked by sharmour on September 20, 2015 
Algebra
The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 15 hours for a car moving at 54 mph. What is the speed of a car that makes the trip in 27 hours?
asked by Marie on February 14, 2016 
Algebra
The time it takes to cover the distance between two cities by car varies inversely with the speed of the car. The trip takes 15 hours for a car moving at 54 mph. What is the speed of a car that makes the trip in 27 hours?
asked by Caleb on March 8, 2016 
MATHS
THE COST OF MAKING A DRESS IS PARTLY CONSTANT AND PARTLY VARIES WITH THE AMOUT OF TIME TO MAKE D DRESS IF IT TAKES 3 HOURS TO MAKE IT COST 2700 AND TAKES 5 HOURS TO MAKE THE DRESS COST 3100 FIND THE COST IF IT TAKES 11/2HOURS TO MAKE THE DRESS
asked by ROSSY on August 28, 2017 
arithmetic
A model airplane takes 2.7 hours to contruct and 13.5 hours to finish. Determine the ratio of construction time to finish in simplest form
asked by Chad on April 25, 2010 
Math
The time t required to drive a certain distance varies inversely with the speed, r. If it takes 4 hours to drive the distance at 40 miles per hour, how long will it take to drive the same distance at 55 miles per hour? a. about 2.91 hours b. about 160.0
asked by jimmy mic dimmy on May 14, 2016 
geometry
hai takes 12 minutes to walk to school. he wants to get there 15 minutes early to meet with his lab partner. what time should he leave his house if school starts at 8:10am?
asked by Anonymous on September 25, 2013 
College Economics
Assume that it takes four hours of labor time to paint a room and three hours to sand a floor.If all 24 hours were spent painting, how many rooms could be painted by one worker? If a decision were made to sand two floors, how many painted rooms would have
asked by Meg on August 28, 2007 
Math
It takes Marty 1 1/4 hours to get ready for school. If 1/5 of that time is used to shower, what fraction of an hour does it take him to shower?
asked by Brian on January 3, 2017 
math
Marty walks to school 4 days each week. The walk talks 15 minutes. How much time does it take marty to walk to school & home each week. Is this correct? 15×4=60 it takes him an hour each week
asked by Joe on April 14, 2013 
math help
Jimmy spends ¾ of an hour getting ready for school. It takes 30 minutes to travel to school. If he needs to be at school at 9:00 am, what time should he get up?
asked by erika on January 12, 2016 
Math
Sorry about last post. :( Graph: Students Hours _______________ Jack  4.5 Mike  6.25 Adam  3 Jim  2.5 Marty 7 Ben  6.75 At your high school, you randomly surveyed male students to find that they play video games a certain amount of hours per week.
asked by Bronte on September 15, 2015 
Math
School is out at 3:50 pm. Band practice is 2 1/2 hrs dinner takes 3/4 of an hour homework takes 1 1/4 hrs. You have to go to bed at 10. About how much time is left to play video games? A. 3 1/2 B.5 hours C.1 hour D. 2 hours D?
asked by Lance on September 17, 2012 
math
which of the following correlation demonstrate a casual relationship? 1 the distance student live from school and the time it takes each to walk there. 2 the amount of money received for allowance and the number of DVD's purchased. 3 the number of hours
asked by Anonymous on May 9, 2009 
math
which of the following correlation demonstrate a casual relationship? 1 the distance student live from school and the time it takes each to walk there. 2 the amount of money received for allowance and the number of DVD's purchased. 3 the number of hours
asked by Anonymous on May 9, 2009 
pre calc
it takes my father 3 hours to plow our cornfield with his new tractor using the old tractor it takes me 5 hours. if we both plow for 1 hour before i go to school, how long will it take dad to finish the plowing. I got 2.5 hours but i think that is totally
asked by kayla on September 25, 2008 
English
Can you please help me check these sentences? Thank you very much. 1) We have fiftyfive minute lessons except for the first and the last lesson which last sixty minutes 2) I have 5 hours of lesson on Mondays, Tuesdays and Thursdays. I have afternoon
asked by Franco on November 14, 2010 
Math
Mr. Smith was deciding when to get up in the morning. He needed 45 minutes to get ready for school. His bus ride took 25 minutes. He wanted to get to school 20 minutes early. If school starts at 8:30, what time should he get up?
asked by ... on February 26, 2020 
English
I forgot to include the following statements. I really hope you can have a look at them too. 1) They regretted missing OR having missed the bus. 2) They escaped with a ship or by a ship. 3) I have my groceries delivered by the supermarket. 4) Petra lives
asked by Franco on October 17, 2010 
help making equations
Superbats, Inc., manufactures two different quality of wood baseball bats, the Wallbanger and the Dingbat. The Wallbanger takes 8 hours to trim and turn on a lathe and 2 hours to finish it. It has a profit of $17. The Dingbat takes 5 hours to trim and turn
asked by kim on April 2, 2013 
statistics
Question 1 A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students
asked by need help on April 6, 2011 
stats
a study of the amount of time it takes a mechanic to rebuild the transmission of a 1992 chevrolet cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours. if 40 mechanics are randomly selected, find the probability that their mean
asked by shasha on May 25, 2010 
math
A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A
asked by tina on July 8, 2011 
System of Linear Equations
A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A
asked by neeha on July 8, 2011 
linear equations
A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A
asked by nmh on July 8, 2011 
English
First paragraph. I changed my satire topic yet again. I figured I didn't really know enough about crude oil prices and opec to criticize it well enough to be effective... So, I'm trying to persuade high school students to enjoy life without the worry of
asked by Adams on June 21, 2008 
AP Statistics
A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students from their
asked by Anonymous on April 26, 2013 
Math
A manufacturer makes two products A and B, each of which is processed in two departments, production and finishing. Each A takes 3 hours to produce and six hours to finish, whereas each B takes 5 hours to produce and 2 hours to finish. How many units of A
asked by Anonymous on July 10, 2011 
math
which of the following correlations demonstrates a casual relationship? 1)the distance students live from school, and the time it takes to walk there. 2)the amount of money received for allowance and the number of dvd's purcashed. 3)the number of hours
asked by derek on May 30, 2008 
statistics
The duration of time it takes General Motors to build a car is normally distributed with a mean of 31 hours and a standard deviation of 2 hours. a) What is the probability that a single car, selected at random, will take between 28 and 34 hours? b) What is
asked by kevin on April 25, 2013 
Algebra 2
Dawn is writing a computer program to find the salaries of her employees after their annual raise. The percentage of increase is represented by p in the program. Marty's salary is $23,450 now. Write a polynomial to represent Marty's salary in one year and
asked by Tom on January 12, 2012 
Math
Marty is a cheerleader. His school colors are red,white,and blue. Marty's uniform consists of a red sweater and a blue sweater/ He has 3 pairs of uniform pants: one red one white and one blue. Draw a diagram showing all the possible ways Marty can combine
asked by Jerald on December 6, 2012 
Math
A model airplane takes 2.7 hours to construct and 13.5 hours to finish. Determine the ratio of construction time to finish time in simplest form
asked by Natatlie on March 18, 2010 
MATH HELP!!!!!!!!!!
If the first bell is at 8:12 but the all the buses are at the school at 8:00 (around 8:05 they let all the students out of the bus). It's takes 41 minutes from home to get to school. What time does your bus comes in the morning and what time you have to
asked by KIM on April 20, 2013 
math (rate)
I need help! Ok here's the problem. Melissa lights 2 candles that are the exact same height at the exact same time. The blue candle takes 6 hours to burn completely. The purple candle takes 9 hours to burn completely. After how many hours will the slower
asked by Kasie on October 25, 2006 
statistics
A company that manufacturers bookcases finds that the average time it takes an employee to build a bookcase is 23 hours with a standard deviation of 8 hours. A random sample of 64 employees is taken. What is the likelihood that the sample mean will be 18
asked by Diane on March 6, 2012 
math
Paul takes longer to paint the door than pete does.When they work together it takes them 2 hours.How long would each take to do the job alone? thanks for your time and help.
asked by Anonymousab on June 12, 2013 
statistics
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean
asked by phia on April 16, 2015 
statistics
The weekly study times for all students in a school are normally distributed with μ = 18 hours and σ = 6 hours. If 36 students are randomly selected, find the probability that their mean study time is greater than 20 hours. My work:
asked by Judy on September 15, 2016 
English
I wrote 5 phrases and several alternatives. Can you please check tif they are grammatical? Thank you. I urgently need them. I include 2/3 phrases each time. Thank you 1) While I was getting ready for school it started to rain, my mum cooked brakfast, my
asked by Henry1 on May 1, 2011 
math
which unit would be BEST to use to measure the time it takes a school bus to drive from its first stop to school? a)hour b)week c)month d)second
asked by lidia on April 15, 2012 
reading
where does marty place the can of food for shiloh to prevent from spoiling? this is from chapter 7 of shiloh. Thank you for using the Jiskha Homework Help Forum. Marty puts the can in the stream to keep it cool.
asked by joseph on October 23, 2006 
Math
The time it takes to clean the house varies inversely with the number of people cleaning. If it takes 1 person 4 hours to clean the house, how long will it take 3 people? 12 hours
asked by M on April 15, 2015 
math
the least common multiple of 3, 6,9 i say 18 Sheila practiced hours Monday, hours Tuesday, and hours Wednesday. What is the total number of hours that she practiced? A) hours B) hours C) hours D) 6 hours Complete the statement, using the symbol < or >. 0.6
asked by dawn on June 26, 2008 
Albebra 2
A school wants to determine the average time it takes students to get to school. Every student coming off the bus is surveyed. What is the sampling method used? Does the sample have a bias?
asked by Lea on April 8, 2013 
math
A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat. How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? 1512.0 hours
asked by Lucy on June 18, 2015 
math
the el paso middle school girls baxketball 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. estimate the distance the bus travels in 2
asked by chemiii on October 2, 2006 
English
Hello. I will be grateful for some grammar help. 1)Which tense is correct in the context: "they will get the documents ready by Friday" or "they will have got the documents ready by Friday"? Are both structures possible? 2)Is it possible to use "after" in
asked by Ilma on February 8, 2013 
Math
An airplane takes 5 3/4 hours to reach its destination and 4 1/2 hours to return. If the plane was on the ground for 1 1/4 hours, what was the total time the plane was gone? My answer is 11 1/2 hours, i just added all three numbers am I right?, or was I
asked by John Dosley on May 29, 2015 
social studies
1.For one day, keep track of what you do from the time you get up until the time you go to bed. For each hour, record one of these activities: *work *play *school *recreation *other I've made my chart, but I need help on the second part which is: 2.Make a
asked by Kelly on December 21, 2009 
MathAlgebra
A car takes 3 hours to travel a distance of 240 km with a speed of 80 km/h while a motorbike can cover the same distance in 4 hours if its travels at a speed of 60 km/h. Explain why the speed and the time it takes for the vehicles to travel a certain
asked by McKenna Louise on November 13, 2013 
math
Clovertown students attend school five days a week for thirtysix weeks. Each school day is six hours long. How many hours do students spend in school each year?
asked by Anonymous on January 8, 2013 
algebra
Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?
asked by mark on March 8, 2009 
algebra question
Marty leaves the airport in his private plane and flies due east at 186 mph. Two hours later, a jet leaves the same airport and flies due east at 434 mph. When will the jet overtake Marty's plane?
asked by Angela G on March 8, 2009 
10th grade algebra
mary takes 3 hours to mow the yard. it takes sally 5 hours. how long would it take with them mowing it together? give the exact decimal answer.
asked by natalie on November 12, 2009 
Im very confusedmath
Brandon is baking cookies for a school bake sale. If he can make 2 dozen cookies in 23 minutes which is a reasonable estimate of the amount of time it will take him to make 12 dozen cookies? A) between 4 and 5 hours B) between 3 and 4 hours C) between 2
asked by Anonymous on February 16, 2018 
social studies
Your flight takes off from the eastern United States at 10 AM. What time will you arrive on the west coast, if the flight takes six hours?
asked by Cecilia on September 8, 2008 
algebra 1
Jaun drives to work. he averages 22mph, he returnes home averaging 32mph. total travel time is 2.25 hours. a. define a variable for the time Jaun takes to travel to work. write an exprension for the time it takes to return home. b. write and solve an
asked by skot on September 17, 2007 
math
Suppose that 28 crayons, of which four are red, are divided random among Jack, Marty, Sharon, and Martha (seven each). If Sharon has exactly one red crayon, what is the probability that Marty has the remaining 3?
asked by rita on February 7, 2011 
Algebra
the time t required to drive a certain distance varies inversely with the speed, r. If it takes 4 hours to drive the distance at 35 miles per hour, how long will it take to drive the same distance at 45 miles per hour? about 3.11 hours 140 hours about 5.14
asked by Adam on May 27, 2018 
algebra
If A and B are two different numbers selected from the first thirty counting numbers from 1 to 30 inclusive, what is the largest possible value of A+B/ AB? Ann takes medicine for a cold. She must take one pill every 8 hours and a teaspoonful of cough
asked by Randy M on January 2, 2013 
English
1. You grew so much the last few days. 11. You grew so much for the last few days. (Was 'for' omitted in #1? Are both OK?) 2. I am ready to go abroad. I am ready for going abroad. I am ready for the trip. I am ready for soccer. I am ready for playing
asked by John on March 5, 2009 
math
Jill has a total of 12 1/2 hours of football practice after school five days a week. a. How many hours of practice will he have for 15 school days? I think the answer is 37 1/2 hours. b. How many hours of practice will he have for 22 school days? I think
asked by Anonymous on January 13, 2015 
Math
Flying to the wind, an airplane takes 4 hours to go 960 km. The same plane flying with the wind takes only 3 hours to make the same trip. Find the speed of the plane and the speed of the wind. I wasn't here for the lesson from my teacher but told me to ask
asked by Njex on February 21, 2015 
math
It takes mary x hours to travel 100 kilometers. If she increases her speed by 5 kilometers per hour, the journey will take her 3 hours less time. Find x.
asked by Taylor on January 24, 2011 
Math
The time it takes to complete a given trip varies inversely as the speed traveled. If it takes Tim 10 hours tro travel from Cleveland to Albany at 42 mi/h, how long will it take him to make the trip at 60 mi/h?
asked by M on April 15, 2015 
Early Child Ed" reposted question"
I asked this question yesterday and several resposponders said that (D) the child's needs would be the best answer. Why couldn't (B) getting the child ready for school be a possible correct answer? Transition planning is to get the child into school to
asked by Tamera on August 3, 2007 
general
Some states have high school starting at 9th grade while some start only in 10th. so when are the kids ready for AP classes? is this school dependent?
asked by andy on November 6, 2008 
Math
Gabby travels from Baltimore to Boston each year. It takes him 10 hours to get to Boston. He stops 3 times, for an hour each time. If he only stopped once, is it reasonable to say that he could get there in 6 hours? Explain.
asked by Jed on December 3, 2013 
economics
Assume that it takes four hours of labor time to paint a room and three hours to sand a floor. If all 24 hours were spent painting, how many rooms could be painted by one person? If a decision were made to sand two floors, how many painted rooms would have
asked by MATTHEW on June 15, 2011 
algebra 1
juan drives to work. Because of traffic conditions, he averages 22 miles per hour. He returns home averaging about 32 miles per hour. the toatle time traveled is 2 and 1/4 hours.define a variable for the time Juan takes to drive to travel to work write an
asked by nathan on March 26, 2008 
Math
Seth has already walked 5/8 mile. It takes 1 3/8 miles to get to school. How much farther does he have to go? 3/4? Aviva needs fresh lemon juice to make cheesecake. She bought 2 lemon but needed only 1 1/4 lemons for the amount of juice she needs. How much
asked by Jerald on October 30, 2012 
8th Grade Algebra
I don't know how to do these types of problems whatsoever. 1) It takes a small jet plane 4 hours less time than it takes a propellerdriven plane to travel from Glen Rock to Oakville. The jet plane averages 637 km/h while the propeller plane averages 273
asked by Gabrielle on March 7, 2009 
Math
If the time is 10:00 when Jina goes to school, and the time is 12:00 when she comes back, how much hours did Jina spend in school?
asked by Blaze on January 9, 2020 
Algebra
The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 12 hours to drive the distance at 60 miles per hour, how long will it take to drive the same distance at 85 miles per hour? A. About 7.08 hours B. About 5.00
asked by AJ on June 2, 2015