Monday

December 22, 2014

December 22, 2014

Number of results: 5,844

**physics**

part 1 Simpson drives his car with an average veloc- ity of 47.5 km/h to the east. How long will it take him to drive 137 km on a straight highway? Answer in units of h part 2 How much time would Simpson save by in- creasing his average velocity to 105 km/h to the east? Answer...
*September 6, 2011 by ashley*

**Statistics**

Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate independently, and at least one drive must be operating for the sytem to eperate successfully. Both drives have a mean length of life of 25,000 hours. A...
*August 2, 2012 by Danielle*

**South America**

an aeroplane flies horizontally at 80m/s in still air if the aviator wishes to fly due south and the wind is blowing from the south-east at 30m/s 1.what course must he steer 2.how long will it take him to arrive at his destination 200km away
*March 16, 2013 by Mehmood*

**physics**

It takes you 7.6 min to walk with an average velocity of 2.5 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m What is your direction? (multiple choice) 1. West 2. North 3. South 4. East
*September 29, 2011 by Sam*

**physics**

What is the angular speed in rev/min of the Earth as it orbits around the sun? I'm confused with this problem. I know we have to convert from rad/s to rev/rad to s/min in order to get the units as rev/min. But I don't know what to use for rad/s
*April 17, 2012 by Priscilla*

**math**

a motorist goes 78km in 40minutes calculate it speed
*July 4, 2011 by Anonymous*

**English check**

1.)Supported the ideas of plainness, divine mission, and grace =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 2.Came to America to find freedom to worship and the Promised Land =a.)The North--Puritanism b.)The South---Gentlemen Planters c.)Both 3.Believed ...
*August 24, 2010 by Ariel*

**Math**

If niti drives her car at 5okm/hr from her home,she reaches the office late by 10min. However if she drives at 60km/hr,she reaches the office 5min early.find the distance of the office from her home.
*September 8, 2012 by Simran kaur*

**physics**

Heather and Matthew walk eastward with a speed of 0.98 m/s. If it takes them 34 min to walk to the store, how far have they walked? If Joe rides south on his bicycle in a straight line for 15 min with an average speed of 12.5 km/h, how far has he ridden? It takes you 9.5 min ...
*September 20, 2006 by anonymous*

**pre-algrebra**

I just do not understand dimensional analysis. Can anybody explain this question: 32 cm = ?m ---- ---- s min Although your dimension labels to not seem to be lined up correctly, it looks like you are being asked to convert 32 cm/s to ? meters/minute. You can do that by ...
*March 20, 2007 by Janet*

**Chemistry**

The instantaneous rate of appearance of water from the reaction 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(g) at some moment in time is 21.3 mmHg per minute. What is the instantaneous rate of disappearance of NH3 at the same moment in time? 10.7 mmHg/min 14.2 mmHg/min 21.3 ...
*May 16, 2011 by dude*

**geography**

which of the following statements is true of Singapore a. Singapore's government condemned u.s. military actions in Afghanistan. b. Singapore finally became self governing in 1965 c. Singapore is member of the federation of Malaysia d. Singapore is a major manufacturer of ...
*January 20, 2014 by cali*

**Physics **

A forklift driver at the Acme W&W warehouse drives a forklift from the main entrance to a loading dock 20m away. He then turns back towards the entrance and drives 13m to pick up a pallet of equipment. Finally, he turns back towards the loading dock, drives 10m and deposits ...
*August 30, 2014 by Yalin*

**Geography**

Which continent extends farther south, Australia or South America? South america
*October 4, 2006 by Ian*

**physics**

A train moving at a constant speed of 68.0 km/h moves east for 33.0 min, then in a direction 40.0° east of due north for 30.0 min, and then west for 59.0 min. What is the average velocity of the train during this run? Magnitude km/h Direction ° (counterclockwise east)
*December 14, 2008 by john*

**math**

john types 20 pages in 40 min, sue types 20 pages in 30 min, bob types 20 pages in 24 min. working togehter how long to type 20 paqes
*February 5, 2012 by cliff*

**PHYSIC**

If a blue car drives 10km/h across the deck of an ocean liner that is traveling at 90km/h, what is the blue car's speed relative to the surface of the water when it drives toward the front of the ocean liner?
*October 6, 2010 by ANA*

**math**

jimmy swam for 5 more min than tim. write an expression showing the number of min tim swam. let m represent the number of min.
*April 4, 2011 by madsion*

**Physics. Please help. Thanks**

in the last three years, Fred's basketball team won 30 more games than they lost. if they won 150 games, what was their ratio of wins to losses? What are three different ways to show the ratio? what is the unit rate if Ramon drives his car 180 miles in 3 hours? what is the ...
*September 26, 2012 by sk8rgurl*

**math**

how to solve this problem: max min(x-y)..... here where the max have written, under it x>=0 is also given. also under min y>=0 is given. Also tell that is this is equals to min max(x-y) ? (same as above under max x>=0, under min y>=0 is given) x and y both in R
*November 16, 2011 by shiya*

**Statistics**

The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) $34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Perform an F test and determine if the price and the number of flash drives sold are related. Let (...
*April 29, 2012 by Paul*

**Math**

Christian drives 120 miles in the same length of time while Julius drives 200 miles. If the speed of Julius exceeds that of Christian by 35mph, find the speed of each
*July 20, 2014 by AD12*

**biostatistic**

recent suggestion is 60 min of exercise per day. A sample of 50 adults in a study of risk factor report exercising a mean of 38 min per day with a standerd deviation of 19 min .based on sampal data, is physical activity significantly less than recommended? Run the appropriate ...
*November 20, 2012 by nono*

**Maths**

An aeroplane leaves a point on latitude 54degree south at 10 a.m. It flies due south at a steady speed of 800km/h. (a) what is its latitude at mid-point? (b) at what time does it pass over the south pole?
*November 23, 2012 by Tosin*

**math**

the first planhas a $16 monthly fee and charges an additional $.08 for each min. of calls. the second plan charges $10. fee and charges an addition $.13 for each min. for how many min. of calls will the cost be equal?
*August 27, 2014 by lisa*

**Physical Science**

How does a Doppler effect aid police in detecting speeding motorist?
*April 5, 2008 by Rachel*

**Physics**

A motorist travels 90 km at 120km/h , and 70km at 75km/h . What is the average speed for the trip?
*September 7, 2011 by Shay Baby*

**calculus**

Determine the rate at which the surface area is changing with respect to time at t=2 min, assuming that r = 3 at t = 0 Assume that the radius r of a sphere is expanding at a rate of 14 in / min. Its surface area is 4(pi)r^2 Ds/dt= 4pi2rdr/dt i got 4pi2(28)(14) is that right or...
*October 14, 2010 by Help asap!! plz*

**math**

Timmy and Kenny raced in biking and running. Timmy won first place by clocking in at 5.75 min. in biking and 8.2 min. in running. Kenny won 2nd place by clocking in at 6.2 min. in biking and 9.4 min. in running. What is the difference of their clock-ins together?
*August 1, 2014 by asdasd*

**Biology**

Hey I am doing a lab, the link is down h t t p : //w w w . sd67 . bc . ca/schools/salc/biology%2012/module%20c%20-%20human%20biology/unit%2010%20-%20respiratory%20system/Homeostasis%20Lab .pdf And I really would like help with #1 My data is right here Pre exercise 0 min - Temp...
*February 7, 2013 by Shreya*

**math**

Write the following ratio in simplest form: 32 min : 36 min
*October 31, 2012 by Isa*

**Chemistry**

How long will it take to collect 1.0 L of H2(g) at STP in the electrolysis of 2.0 M HCl with a current of 4.25 A? a. 15 min b. 34 min c. 2.8 hr d. 11 hr
*June 5, 2013 by Anonymous*

**Physics**

A car travels 30 km north in 25 min. and 40 km east in 35 min. What is the total distance traveled?
*June 13, 2013 by Isis*

**Chemistry**

Nitric oxide reacts with chlorine to form nitrosyl chloride, NOCl. Use the following data to determine the rate equation for the reaction. NO + (1/2)Cl2 -> NOCl Expt.[NO] [Cl2] Initial rate 1 0.22 0.065 0.96 M/min 2 0.66 0.065 8.6 M/min 3 0.44 0.032 1.9 M/min
*February 6, 2013 by Anonymous*

**Math**

determine max and min value 3,- 36/7,-1,-2/3,5/4,-5,26/9 answer max3 min-5 ? put in asending order -2/9,-1/9,3/7,5/9,1/8
*October 17, 2009 by david*

**Chemistry**

If the time elapsed is 4.26 min, what is the value of the rate constant, k? ln[R]t / [R]o = -0.0237 I am not sure how to slove this. Is Rt 4.26 min?
*March 5, 2012 by Hannah*

**Math Help!!!**

Write the following ratio in simplest form: 32 min: 36 min A. 8:9 B. 8:36 C. 32:9 D. 128:144 Is the answer A? Thank you
*November 11, 2014 by Callie*

**math**

If a CD makes 58 and half revolutions in 3 fourths a min ,how many in a min
*November 19, 2014 by theodore*

**math**

marcus drives a delivery truck and spent$89 on gas his frist week.if he drives 8 months using about this much gas each week,how much would he spent on gas ?use estimation to find the answer to the nearest $1000.
*February 28, 2011 by cindy*

**Math**

Elephant speed (666m/min Zebra speed (1066m/min Assume they maintain these speeds and run away from each other. How far away from each other would they be after 3 min? How long would it take them to be 3464m apart? Need help figuring out the formula to do these.
*September 30, 2008 by Larry*

**math**

express distance as a function of time traveled. jason leaves detroit @ 2pm & drives at constant speed west. he passes ann arbor, 40 mi. from detroit at 2:50 pm. i understand that d=rt. but i'm stuck. is this the answer-- d(t)=t/rt ?? You could make a table like this 2pm 0m ...
*September 27, 2006 by hawkstar*

**Chemistry(Please help, thank you!)**

If the time elapsed is 4.26 min, what is the value of the rate constant, k? ln[R]t / [R]o = -0.0237 I am not sure how to slove this. Is Rt 4.26 min?
*March 6, 2012 by Hannah*

**Math**

If an individual wants a work of 1300 kg m/min with a cycling speed of 300 m/min, how much resistance is needed?
*October 6, 2013 by Natasha*

**Chemistry**

Consider the following hypothetical aqueous reaction: A (aq)-->B(aq)}. A flask is charged with 0.065 (mole) of A in a total volume of 100.0 (mL}. The following data are collected: Time (min) 0 10 20 30 40 Moles of A .065 .051 .042 .035 .031 Calculate the average rate of ...
*February 9, 2012 by Emily*

**Physics**

route that takes it 12 km [E] of its starting position in 24 min. In another 24 min, the bus turns around and retraces its path to the terminal.
*October 2, 2014 by Han*

**algebra**

1. 18 m/min = cm/s 2. 5.7 gal/h = c/min 3. 264 yd/s=? mi/h Anyone know the answers to these?
*January 24, 2008 by kt*

**Physics**

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*February 6, 2012 by Alice*

**Physics**

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*February 6, 2012 by T mann*

**physics**

A train at a constant 41.0 km/h moves east for 38 min, then in a direction 44.0° east of due north for 25.0 min, and then west for 59.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*February 6, 2012 by T mann*

**physics**

A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*October 7, 2012 by tatiana*

**physics**

A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*October 7, 2012 by tatiana*

**Physics**

A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*October 9, 2012 by Devin*

**Physics**

A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*October 9, 2012 by D*

**phyics**

A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west for 51.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*October 10, 2012 by D*

**Physics**

A train at a constant 41.0 km/h moves east for 28 min, then in a direction 53.0° east of due north for 15.0 min, and then west for 64.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of north negative) of its ...
*February 9, 2014 by Robin*

**Kinesology**

A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?
*February 29, 2012 by Sam*

**Science**

A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?
*February 29, 2012 by Sam*

**Physics**

A train moving at a constant speed of 61.0 km/h moves east for 35.0 min, then in a direction 50.0° east of due north for 10.0 min, and then west for 49.0 min. What is the average velocity of the train during this run? What is the magnitude of that velocity? What is the ...
*January 27, 2014 by Anonymous*

**math214**

Use the following data to justify the amount of time that you expect to assign for weekly homework to classes in grades K–4 and grades 5–8. National Survey of Teachers Concerning the Amount of Homework Assigned per Week k-4 (percentages) 5–8 (percentages) 0–30 min 48 8 31–60 ...
*September 25, 2011 by darcel78*

**Statistics**

A disk drive manufacturer has determined that his product has a “mean time to failure” of 10,000 hours, with a standard deviation of 500 hours. Due to the many factors involved, it is assumed that the time to failure is normally distributed. A network operations center ...
*March 4, 2010 by Fran*

**statistics**

A researcher conducted a study of the access speed of 40 hard drives and concluded that his maximum error of estimate was 15. If he were to conduct a second study to reduce the maximum error of estimate to 5, about how many hard drives should he include in his new sample?
*May 10, 2012 by Koia*

**Physics! another one i need help with**

the velocity of the wind would be: (42km/h)cos(30)=36.37 After flying for 15 min in a wind blowing 42 km/h at an angle of 30° south of east, an airplane pilot is over a town that is 50 km due north of the starting point. What is the speed of the airplane relative to the air in...
*February 3, 2007 by Troyyyy*

**Algebra**

A athlete runs 40 ft in 5 minutes. i have to find the rate help please per min... 40ft/5min= 8ft/min
*August 21, 2007 by MEL*

**math**

maria shoveled snow fromher driveway in 55 min. tom can do the same job in 30 min. how long will it take to do it together?
*April 11, 2013 by pam*

**Geography**

if you traveled south from South America, What is the next continent you would reach? Do you have a globe you can look at? If not, do you know which continent is located at the very southern-most point of the earth? if you traveled south from south america,waht is the next ...
*October 31, 2006 by cindy*

**us history**

Which of the following statements is FALSE about Andrew Johnson's perspective about the South? Answer He viewed Southern plantation aristocrats with contempt. He wanted to treat the South similar to a conquered province. He blamed individuals for leading the South to war. He ...
*April 17, 2012 by Dave*

**Calculus**

RP^2=RQ^2 + QP^2 -2(RQ)*(QP)cosQ (1) QP = 24 (km/min) t (2) Diffentiate both sides w.r.t. the time t: 2 RP* d Rp/dt = 2 t [24 (km/min)]^2 -2(RQ)* 24 (km/min) cosQ (3) Using (1) and (2) you find out what RP is at t = 4 minutes. You plug that into (3) and solve for d Rp/dt. A ...
*November 14, 2006 by Count Iblis*

**chemistry**

33) A first-order reaction has a rate constant of 0.33 min-1. It takes __________ min for the reactant concentration to decrease from 0.13 M to 0.088 M. A) 1.4 B) 0.13 C) 1.2 D) 0.85 E) 0.51 how can i set this up?
*November 1, 2010 by JES*

**phsics**

a car moving with an initial velocity of 60 m/s south has a constant acceleration of 10 m/s^2 north. After 12 seconds its velocity will be: A) 60 m/s south B)60 m/s north C) 40 m/s north D) 40 m/s south
*September 2, 2013 by jack*

**MATH**

Lenny,mark,andliza are going to jog along 3 different trails in the park. To complete one circuit , lenny takes 6 min., Mark takes 12 min., and liza takes 9 min. if they start at the same place and the same time, how long will it be before they are together again at the ...
*September 25, 2007 by kejuan*

**health**

i was completing my study guide so i can study and i ran across these questions and needed help? An activity done in a short burst at a high level of intensity without oxygen is___. A.aerobic B.anaerobic C.intense D.maximal Sarah wants to know her target heart rate zone.Her ...
*December 17, 2013 by matt*

**MICRO ECONOMICS**

You have been allocated an investment budget of $100 million U.S. You are to make a strategic assessment of the microeconomic strengths and weaknesses of the industry in South africa in REFREIGRATORS & FREEZERS as a potential location for this new capital investment. An your ...
*March 3, 2007 by AKHIL*

**Math**

Petra has 20 min.to finish pumping the water out of the pool. There are 1850 gallons of water left in the pool. Will Petra be finished in 20 min.? Why or why not? I say no because I multiplied 1850 by 20 and got 37,000. She want be finished in 20 min. Is this correct
*November 3, 2014 by Amy*

**English 11**

The motorist, confused by conflicting directions, lost his way. Verbal phrase: Gerund Being used as: Adverb?
*September 26, 2012 by Anonymous*

**Math**

Find the critical points and the interval on which the given function is increasing or decreasing, and apply the First Derivative Test to each critical point f(x)= (7/4)x^4+(28/3)x^3+(-63/2)x^2-252x critical points in increasing order: c1=? min or max? c2=? min or max? c3=? ...
*December 10, 2014 by Samantha*

**pre alg**

2.5 qt/min. = _gal/min
*December 10, 2007 by john paul*

**geometry**

Lenny’s favorite radio station has this schedule: news: 15 min. commercials: 3 min. music: 42 min. If Lenny chooses a time of day at random to turn on the radio to his favorite station, what is the probability that the news will be on?
*October 22, 2013 by tamara*

**Physics**

To get to a concert on time, Dakota has to drive 122 miles in 2.00 hrs. (a) if he drove at an average speed of 55.0 mi/hr in a due west direction for the first 1.20 hr what must be his average speed if he is heading 30 degrees south of west for the remaining 48.0 min? (b)what ...
*September 12, 2010 by Dakota S*

**Elapse time**

3h 40min 10 h 15 min Renaming 11:00 as 10 hours 15 minutes -7h 35 min Subtract the beginning time ------------------ 3h 40 min Subtract So I actually subtract all of it and not add the minutes right? So my answer should be 3h 20min right? How can I check if this is right?
*December 3, 2012 by Moby*

**maths magic**

There are A,B,C,D at one end of the bridge.they have to cross within 17 minutes.only 2 can cross the bridge at atime .since it is very dark one has to come back to show the light and its said that A can cross the bridge in 1 min ,B can cross at 3min ,C in 5 min and D in 10 min...
*October 27, 2012 by nanbala*

**physics**

a bus travels 280 km south along a straight path with an avg velocity of 88 km/h to the south. then it travels 210 km south with an avg velocity of 75 km/h to the south. a) how long does the 1st trip last? b) how long does the 2nd trip last? c) what is the avg velocity for the...
*September 21, 2014 by nicole*

**math**

Tank 1 initial contains 70 L (liters) of water and 450 g of salt, while tank 2 initially contains 20 L of water and 200 g of salt. Water containing 10 g/L of salt is poured into tank1 at a rate of 1 L/min while the mixture flowing into tank 2 contains a salt concentration of ...
*February 6, 2009 by alice*

**Geography (Ms. Sue)**

1). Which countries besides Spain sent settlers to South America? A: ? 2). Which countries in South America have the highest literacy rates? A: Argentina, Chile, and Uruguay have the highest literacy rates in South America. 3). What have been some obstacles to democratic ...
*September 27, 2013 by Anonymous*

**physics**

3- An electric motor can accelerate a Ferris wheel of moment of inertia (I =20 000 kg.m2) from rest to (10.0 rev/min) in (12.0 s). When the motor is turned off, friction causes the wheel to slow down from (10.0 to 8.00 rev/min) in (10.0 s). Determine (a) the torque generated ...
*March 16, 2013 by a*

**PHYSICS**

an arctic flying to antarctica encounters a storm. The term changes direction to fly around the storn. if the tern flies 46 km at 15degrees south of east , 22 km at 13 degrees east of south , and finally 14km at 14 degrees west of south what is the tern's resultant displacement
*December 20, 2010 by mike*

**math **

need to check answers please 9/11-3/11+7/11=13/11=1 2/11 evaluate then to lowest form One task took 7 minutes (min), a second task took 12 min, and a third task took 21 min. How long did the three tasks take, as a fraction of an hour?2/3 find perimeter of triangle 3/8 then ...
*September 10, 2009 by p*

**Algebra**

he spreadsheet shows the length of 3 movies in each of 3 categories. Choose the formula that could be used in cell B2. Â A B C D E 1 Type of Movie Movie 1 (min. long) Movie 2 (min. long) Movie 3 (min. long) Mean Length 2 Animated 72 63 84 73 3 Drama 92 104 113 103 4 Action ...
*October 15, 2012 by Algebra*

**Social studies check answers ***damon*****

please check these answers 1.A 2.C 1. where would you most likely find south americas largest cities? A. Mountains B. rain forests C. coastlines D.deserts 2. how did human migration most contribute to ethnic diversity in south america today? A. people came to south america ...
*March 13, 2014 by dalia*

**Math**

Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?
*November 7, 2010 by Chris*

**math**

Samantha can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?
*February 7, 2011 by Bob*

**math**

Ashley can ride her bike to work in 2/3 of an hour. When she drives to work it takes 1/3 of an hour. If she drives 12 miles per hour faster than she rides her bike, how fast does she ride her bike?
*March 1, 2011 by morgan*

**Calculus**

1.At noon of a certain day,ship A is ^0 km due north of ship B. If A sails east at 12 km/hr and B sails north 9 km/hr,determine how rapidly the distance between them is changing 2 hrs later. Is it increasing or decreasing? 2.At a given instant the legs of a right triangle are ...
*August 31, 2014 by 123*

**gym question?**

we were told to pick a good exercise routine to exercise to i picked this one and i was wondering if its good cardio. if you have one please share. 30 min treadmill 30 minutes bike 30 min treadmill 30 min "swishy thing that goes circular" (dont know the name) 30 minute bike is...
*February 5, 2010 by maci*

**Statistics & Probability**

A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he include in his new sample? ...
*January 11, 2013 by Alia*

**Statistics & Probability**

A researcher conducted a study of the access speed of 45 hard drives and concluded that his maximum error of estimate was 28. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he include in his new sample? ...
*January 11, 2013 by Alia*

**LA**

How did the Civil War affect the Northern and Southern economies? A;The North experienced more severe inflation than the South. B;Overall the South fared much worse economically than the North. C;The South experienced a boom in manufacturing. D;The North's economy was ...
*April 11, 2013 by justin*

**PHYSICS**

A BUS TRAVELS 280 KM SOUTH ALONG A STRAIGHT PATH WITH AN AVERAGE VELOCITY OF 88 KM/H TO THE SOUTH. THE BUS STOPS FOR 24MIN, THEN IT TRAVELS 210 KM SOUTH WITH AN AVERAGE VELOCITY OF 75 KM/H TO THE SOUTH. A. HOW LONG DOES THE TOTAL TRIP LAST? B.WHAT IS THE AVERAGE VELOCITY FOR ...
*September 5, 2007 by Susie*

**S.S.**

Which of the following was NOT a reason why there was less industrial development I the South than in the North? a. because of the rockiness of southern land made it difficult to develop railroads. b. because there was a lack of capital in the South. c. because agricultural ...
*March 7, 2014 by Amy*

**8th grade math URGENT**

1 1/4 miles in 2 min and 4 seconds, or 1 3/16 miles in 1 min and 55 sec. Which is greater? $1.60 for 5 min or $19.50 for 1 hour. Which is greater? Look for a pattern in the expressions shown below. Use the pattern to write an expression for the sum of the whole numbers from 1 ...
*September 8, 2013 by help!!*

**chemistry**

why would lowering the temp and decreasing the pressure not increase the rate of the reaction: carbon monoxide gas is combusted in the presence of oxygen gas into carbon dioxide. (DeltaH for this reaction is -285kJ.) CO + O2 ==> CO2 + heat decreasing P drives the reaction ...
*April 29, 2007 by alexa*

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