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April 16, 2014

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Related Rates Problem
A runner sprints around a circular track of radius 150 m at a constant speed of 7 m/s. The runner's friend is standing at a distance 300 m from the center of the track. How fast is the distance between the friends changing when the distance between them is 300 m? (Round to 2 ...
Friday, October 1, 2010 at 1:45pm by Calculus

math/rates and unit rates
I can't figure out my homework because I don't know what rates & unit rates are.
Thursday, May 8, 2008 at 6:35pm by wyatt christopherson

math
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Sunday, November 13, 2011 at 11:49am by Nabiha

Math(Please help. Thank you)
Is number 3 considered a related rates problem?
Sunday, May 1, 2011 at 9:41am by Hannah

Math Calculus
Related rates are quite difficult. I'm still mastering them. I would recommend googling "related rates" without the quotes. There is a great website called "Pauls Online Notes: Calculus I - Related Rates" that gives detailed analyses for many different problems. There are ...
Wednesday, November 21, 2007 at 9:01pm by Michael

Math
Divorce rates, high school graduation rates, welfare rates are just a few you could consider.
Thursday, March 3, 2011 at 7:45pm by PsyDAG

Math - Calculus
Im trying to understand related rates here and im getting stuck at this word problem. It says if V is the volume of a sphere with radius r, and the volume of the sphere decreases as the time passes. express dV/dt in terms of dr/dt. Describe the relationship in words. I dont ...
Thursday, December 7, 2006 at 1:57am by Cosmo

Related rates
Incorrect
Thursday, November 11, 2010 at 9:21pm by Michael

Related rates-calculus
3.1831
Sunday, November 13, 2011 at 7:37pm by dfsgsdf

maths
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Saturday, November 12, 2011 at 12:34pm by Nabiha

maths
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Saturday, November 12, 2011 at 1:28pm by Nabiha

maths
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Saturday, November 12, 2011 at 1:57pm by Nabiha

Maths
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Saturday, November 12, 2011 at 9:41am by Nabiha

maths
This is actually maths homework but the question sounds like geography: 1)Why do you think the UK is so high up in the list for mortality rates due to drug-related diseases. What do you think we can do to lower drug-related deaths in the UK? 2)Why do you think the UK is so ...
Sunday, November 13, 2011 at 10:42am by Nabiha

Related rates
thank you so much. :) you really help me a lot. Godbless!
Monday, May 14, 2012 at 11:49pm by :)

Related rates
i'm sorry, this is about optimization problems.
Sunday, May 20, 2012 at 9:02pm by :)

math/rates and unit rates
Can you help me with my math homework on rates
Thursday, May 8, 2008 at 6:35pm by jessica

Related Rates Problem
your kind of really bad at this
Friday, October 1, 2010 at 1:45pm by Josh

Related Rates
Thank you very much. I understand it now. :-)
Monday, May 6, 2013 at 8:08pm by Shania

SCI 275
Birth rates, death rates, migration rates. These are partially caused by poverty, malnutrition, and disease.
Thursday, January 10, 2008 at 6:15pm by Ms. Sue

Calculus - Related Rates
I must have dropped a PI.
Sunday, November 29, 2009 at 5:42pm by bobpursley

calc- please help im so confused
differentiation & related rates
Sunday, January 1, 2012 at 4:51pm by lilly

Calculus - Related Rates
now all u got to do is plug in the 3 for r and u will get the answer
Sunday, November 29, 2009 at 5:42pm by Anonymous

Related rates
hii... am in the solution with the V = (1/3)π (h^2/4)(h) still have h in 2/4?? isn't the derivative of r = h/2 is just 2/4??
Monday, May 14, 2012 at 11:49pm by z

math/unit rate
please help me find the definition for unit rate. It depends upon what kind of unit. Go to www.google.com and type in unit rate. There is one source there for hotel unit rates, another for unit rates for the medical field, etc. You may also go to www.dictionary.com and type in...
Tuesday, September 26, 2006 at 5:58pm by hannah

Calculus - Related Rates
Bacteria are growing in a circular colony one bacterium thick. The bacteria are growing at a constant rate, thus making the area of the colony increase at a constant rate of 12 mm sq. per hour. Find an equation expressing the rate of change of the radius as a function of the ...
Sunday, November 29, 2009 at 5:42pm by Joel

math-rates
.....rates....6th garde.....lesson6-2 5pounds for $2.49
Thursday, December 2, 2010 at 2:32pm by alex

math/rates and unit rates
uhm what do you need?
Thursday, May 8, 2008 at 6:35pm by jessica

Business/Economics
What is strengths and weaknesses regarding monetary polcies, and how is related to treasury bill and note rates?
Wednesday, March 2, 2011 at 4:05pm by Tanya

calculus: related rates
:O Thank you so much, for some reason i totally forgot about the product rule! hahah... :)
Sunday, March 11, 2012 at 4:47pm by mary

math-rates
1,680 kilobytes in 4 minutes ..........how do u get it....... lesson 6-2 ......rates....6th grade pg. 289 ......#2
Thursday, December 2, 2010 at 2:36pm by alex

finance
Inflation is expected to be high in the distant future if long term (10 to 30 year) loan rates are much higher than short term rates (6 months to two years). Long term rates are usually only a few percent higher. Sometimes long term rates are lower, if the Federal Reserve is ...
Monday, March 10, 2008 at 8:49pm by drwls

Derivative-Word Problem
I read more about related rates, and have now understood these types of problems. Thank you!
Thursday, March 14, 2013 at 2:14pm by Mark

Chemistry
Just a few questions about rates of reaction. A) Why are the units for average and instantaneous rates the same? -because they are both measures of how quickly a reaction is occuring per unit time B) For a given set of data, two students determined different average reaction ...
Sunday, May 16, 2010 at 2:59pm by Jamie

related rates
Rats. dr/dt = -.2, not -.4 (diameter d/dt) So, take half of that answer.
Monday, October 24, 2011 at 10:06am by Steve

Related rates
Thank you for answering my question. I just can't understand how it come up to the equation 10=2Π(64)dr/dt. I will be very thankful if you elaborate. :)
Monday, May 14, 2012 at 11:49pm by :)

Math
this is not the question i was looking for!!! >.< i wanted a related rates question!!!!!! i have a test on it!!!!! omg ><
Wednesday, February 14, 2007 at 8:42pm by michael

Economics
I think I understand your question. The answer is yes. Price and consumption are inversely related as too are interest rates and consumption.
Tuesday, March 11, 2008 at 6:57pm by economyst

Calculus 1 Related Rates
Thank you so much Reiny you rock! I was putting that .406 in for V but i did have 620 with the 33.0^-1/2. Thanks you Rock!!!!!
Sunday, November 21, 2010 at 6:50pm by jahil

Math
Rates And unit rates 120mi. to 10 gal of gas I'm not sure what you are asking, but this reduces to 12 miles per gallon. Does that help? If not, repost your question in different terms. Thanks for asking.
Thursday, February 8, 2007 at 5:33pm by Ruthie

comp
can you help me Underline the topic sentence for this paragraph??? Interest rates have a decidedly large impact on purchasing decisions. Interest rates affect our purchases in a couple different ways. Interest rates are what you pay for the use of someone else's money. When ...
Monday, May 16, 2011 at 2:30pm by needhelp

finance
Which of the following is true with regards to rising interest rates. A. Use long-term loans to take advantage of current low rates. B. The term of the loan is ot impacted by rising interst rates. C. Use short term loans to take advantage of low iterest rates. D. Select long-...
Sunday, November 3, 2013 at 12:28pm by Michelle

criminology
First of all, you'd need to state your facts. What crimes? Who calculated the "rates" and how? Compared to what crimes and rates in the past decade or two? Who calculated those rates and how? Please ask a more specific question and you'll probably be able to get a better ...
Tuesday, October 9, 2007 at 3:06pm by Writeacher

MATh/UNiT RATES
FIND THE UNIT RATES AND WRITE THEM BOTH IN FRACTION AND WORD FORM. 7.Gabrielle bikes 78 miles in 6 hours.
Tuesday, September 23, 2008 at 5:23pm by DEANZA

Calculus
All of my work was correct. It can be solved using the same method as a related rates problem. Your equation is the same as the one I came up with.
Saturday, November 24, 2007 at 10:52am by Michael

Related rates
I'm very thankful for being kind to me. Last one thing, 8 meters is the height of the conical pile. Does it also mean that it is the same as the height of the sand?
Monday, May 14, 2012 at 11:49pm by :)

Chemistry
A) Why are the units for average and instantaneous rates the same? -because they are both measures of how quickly a reaction is occuring per unit time That sounds ok to me. B) For a given set of data, two students determined different average reaction rates. If neither student...
Sunday, May 16, 2010 at 2:59pm by DrBob222

Finance
which of the following is true with regards to rising interest rates? A. Use Long-term loans to take advantage of current low rates. B. The term of the loan option is not impacted by rising interest rates. c. Use Short-term to take advantage of low interst rates. D. Select ...
Thursday, October 31, 2013 at 10:29pm by Michelle

Introduction to Finance: Harvesting the Money Tree
7) The problem in stretching out the maturity of marketable securities is that A. long-term rates higher than short-term rates. B. interest rates are generally lower. C. you are legally locked in until the maturity date. D. there is greater possibility of loss. I think B
Saturday, August 8, 2009 at 1:35am by scooby9132002

Math, Related Rates
y = 1/x dy/dt = -1/x^2 dx/dt -1 = -1/x^2 dx/dt dx/dt = x^2 Looks good to me.
Tuesday, September 10, 2013 at 9:40am by Steve

Chemistry
On the first, the law of diffusion is used: Effusion is inversely related to mole mass.. rateHe/rateH2= sqrt ( molmassH2)/sqrt(molemassH2) in your case, rates is volume/time
Sunday, October 5, 2008 at 12:53am by bobpursley

Macroeconomics - inflation vs unemployment!!!!
I had to graph both the U.S. inflation and unemployment rates on the same graph between the years 1990-2004. I need to analyze the data. How are the two rates related? How does one affect the other, if so? One way to analyze the data is to put the inflation data on one axis, ...
Saturday, September 9, 2006 at 10:44pm by Samantha

Environemtal science
I believe they are birth rates, death rates, immigration and emigration
Tuesday, December 2, 2008 at 1:39pm by kia

Sociology
What does the author think best explains the number of lower-class offenders in the criminal justice system? a) They have higher offending rates. b) They have higher rates of recidivism. c) There are both disparities in crime rates and discrimination in the system. d) ...
Sunday, November 11, 2012 at 5:33pm by Tammy

Math, Related Rates
Consider the hyperbola y = 1/x and think of it as a slide. A particle slides along the hyperbola so that its x-coordinate is increasing at a rate of f(x) units/sec. If its y-coordinate is decreasing at a constant rate of 1 unit/sec, what is f(x)? -I arrived at the answer f(x...
Tuesday, September 10, 2013 at 9:40am by xavier

6th grade
Hello, I need help in trying to figure out rates (as in ratios and rates). What is a formula that I would use? Thanks in advance.
Tuesday, January 6, 2009 at 6:50pm by Bobby

Maths
It would help if you gave us specific questions about rates or define more specifically what type of rates concern you.
Friday, November 11, 2011 at 6:45am by PsyDAG

7th Grade Math
examples of ratios are rates: 36miles/gallon 2inches/year 4cups/recipe 546mg Salt/DoubleCheesburger 4inches rise/10ft horizonal all those are ratios, and rates. Actually, thinking on it, I cant think of a ratio what could not be a rate.
Thursday, September 20, 2012 at 9:18am by bobpursley

Government
1. Both corporate and individual income tax rates are set at ______ rates. a. high b. low c. progressive d. regressive I think it's C?
Tuesday, July 19, 2011 at 7:56pm by Anthony

FIN301 Business Finance
http://www.economicshelp.org/blog/89/interest-rates/why-are-there-so-many-different-interest-rates/
Monday, January 28, 2013 at 2:12pm by Ms. Sue

Related rates-calculus
You are eating soup from a hemispherical bowl of radius 6cm at a constant rate of 40ml/min. Find the rate at which the soup level is going down in depth of the soup is 2cm.
Sunday, November 13, 2011 at 7:37pm by A

ECO/372
what happens to the monry interrest rates and the economy if the federal reserves is not the seller of government bonds? I know the interest rates go down but not sure what else?
Friday, April 27, 2012 at 2:15pm by at

social studies
how is grant and mainland related how is colony , colinist , and plantation related how is northwest passage trade network and agent related how is pilgrim mayflower compact rewlated
Wednesday, March 26, 2008 at 8:56pm by Jillian

Calculus - Related Rates
I'm sorry, I'm not following what you did. I get that we know dx/dt = 12mm^2/hr and we want to find dr/dt but I don't know how you linked them together as a function of r. Maybe show me more steps and how you got the derivative dr/dt. Thanks
Sunday, November 29, 2009 at 5:42pm by Joel

statistics
Investment analysts generally believe the interest rate on bonds is inversely related to the prime interest rate for loans; that is bonds perform well when lending rates are down and perform poorly when interest rates are up. Can the bond rate be predicted by the prime ...
Monday, July 8, 2013 at 12:08pm by Tony

Stats
Question 3 Investment analysts generally believe the interest rate on bonds is inversely related to the prime interest rate for loans; that is, bonds perform well when lending rates are down and perform poorly when interest rates are up. Can the bond rate be predicted by the ...
Monday, August 20, 2012 at 11:53am by David

related rates calculus problem
A balloon is being filled with air at a rate of 3 cubic meters per minute. Find the rate at which the radius is changing when the volume is 113.0973355 cubic meters.
Thursday, December 30, 2010 at 4:58pm by elizabeth

Calculus
At what point are you in the study of related rates? Are you not differentiating with respect to "time" ? If not, then you would simply have x^2 + y^2 = 1296 2x + 2y dy/dx = 0 y dy/dx = -x dy/dx = -x/y or -x/g(x), so that agrees with your answer.
Friday, June 22, 2012 at 8:12am by Reiny

COM155
Write two paragraphs about how interest rates affect our purchasing decisions. High interest rates make us stop and think, do we need this item? Is it a necessity? When interest rates are high people tend to finance things less. Why pay a lot in interest when you can just ...
Tuesday, August 9, 2011 at 9:37pm by Jessica

Related rates
Two people start from the same point. One walks east at 1 mi/h and the other walks northeast at 2 mi/h. How fast is the distance between the people changing after 15 minutes?
Thursday, November 11, 2010 at 9:21pm by Michael

Chemistry 152
to obtain the rate of the reaction 5Br-(aq) +BrO3- (aq) + 6H+ (aq) ---3Br2(aq) + 3H2O(l) you might follow the Br concentration or the BrO concentration.How are the rates in terms of these species related?
Friday, December 6, 2013 at 4:31pm by Annette

Calculus
Related Rates Problem An isosceles triangle with a base of 20root3 cm long. If the length of the leg decreases at rate 3 cm/h, find the rate of decreasing of the area of the triangle in the instant at which the triange becomes equilateral.
Saturday, May 4, 2013 at 6:58pm by Mostafa

Business Finance
a.) Inflation b.)rising interest rates c.)change in hedging activities d.) declining interest rates
Sunday, February 14, 2010 at 3:22pm by Anonymous

critical thinking
does it actually say "crime rates" or "violent crime rates" and are these numbers for the USA only?
Wednesday, May 13, 2009 at 3:46am by bob

Exchange Rates Help
This site will show you a graph. http://www.oanda.com/currency/historical-rates/
Wednesday, October 5, 2011 at 12:08pm by Ms. Sue

Environmental Science
How do birth, death, fertility, and migration rates affect population size? What factors can affect these rates?
Wednesday, September 5, 2007 at 9:56pm by Patricia

sci
How do birth,death,family and migration rates affect the population? What factors can affect these rates
Wednesday, August 22, 2007 at 8:49pm by renee

geography
I have to put indicators of measuring development in countries in order of importance they are :- literacy rates number of people per doctor, gross national product, % of population access to clean water, population density, % people employed in agriculture, % population ...
Monday, May 10, 2010 at 5:47pm by sue

Calculus
your a) and b) are correct c) write your opening equation as x = 24cosŲ differentiate with respect to t, (t in seconds) dx/dt = -24sinŲ dŲ/dt (#1) we are given dx/dt = 2 when x = 6 when x=6 we can get the height h of the triangle by Pythagoras h^2 + 6 ^2 = 24^2 h = √540 ...
Wednesday, March 23, 2011 at 12:39am by Reiny

english
Can someone please check my homework for me? · Write two paragraphs about how interest rates affect our purchasing decisions. · Identify the topic sentence in each by underlining it. · Post your paper as an attachment. Interest rates affect the buying of homes in real estate. ...
Sunday, May 8, 2011 at 9:25pm by icelocsgirl

economics
Are you sure you worded this question correctly? If employment rates are higher in Canada, then wouldn't employment (not unemployment) rates would be lower in the U.S.
Sunday, March 15, 2009 at 11:44am by Ms. Sue

chemistry
Predict the relative rates for the reaction of butadiene and a)ethene, b)methyl propentanoate, c)maleic anhydride? Please Help!!!How do I determine the relative rates of the reactions?
Thursday, May 21, 2009 at 2:12pm by gizelle

SS
Rising demand for a certain type of car will probably lead to: a. lower interest rates for all types of vehicles. b. lower interest rates for that type of car. c. higher interest rates for all types of vehicles. d. higher interest rates for that type of car. D
Thursday, January 23, 2014 at 2:41pm by Anonymous

Macroeconomic
1. An example of an automatic stabilizer is A. a temporary tax rebate. B. the progressive income tax.Student Response C. cost of living adjustments to social security payments. 2. Which of the following represent expansionary fiscal policy? A. an increase in average individual...
Tuesday, June 8, 2010 at 4:22pm by Bob

math & finance
A bank offers a rate of 5.3% compounded semi-annually on its four year GICs(Guaranteed Investment Certificates). What monthly and annually compounded rates should it quote in order to have the same effective interest rate at all three nominal rates?
Wednesday, July 29, 2009 at 10:29pm by Thara

Related rates
Sand is being dropped at the rate of 10 cubic meter per minute onto a conical pile. If the height of the pile is always twice the base radius, at what rate is the height increasing when the pile is 8 meters high?
Monday, May 14, 2012 at 11:49pm by :)

related rates problem-calculus
A spherical balloon is being filled with air in such a way that its radius is increasing at a rate of 2 centimeters per second. At what rate is the volume of the balloon changing at the instant when its surface has an area of 4 pi square centimeters?
Thursday, December 30, 2010 at 3:25pm by james

Criminal Justice
Could someone please help me with this question? What are crime rates? This is what I have so far: Crime rates are the number of offenses reported for each unit of population. How could I expand on this? Thanks for your help!
Friday, April 15, 2011 at 6:56pm by Helen

SCIENCE/ECOLOGY
I NEED HELP IN PREPARING A DEMOPRAPHIC AND ENVIRONMENTAL TIMELINE WHICH INCLUDES DEATH RATES, BIRTH RATES, POPULATION CHANGES, AND MAJOR HISTORY CHANGES
Tuesday, April 2, 2013 at 4:00pm by EVELYN

calculus (related rates)
A particle moves in the plane along the curve y=xln(x). At what rate is the distance from the origin increasing at the moment its x-coordinate is 2 cm and its x-coordinate is increasing at a rate of 17 cm/sec?
Tuesday, October 27, 2009 at 9:05pm by drew

accounting
the longer the time to maturity: the greater the price increase from an increase in interst rates; the less the price increase from an increase in interest rates; the greater price increase from a decrease in interest rates; the less the price decrease fron a decrease in ...
Friday, April 3, 2009 at 11:24am by pookie

Related rates
Hey, I have a question on related rates and I'm a little rusty at them. I have an idea how to do this one but at a certian point i get stuck. The question is: Two cars leave the intersection, the first travelling south at 40 km/hr and another travelling west at 90 km/hr. How ...
Thursday, November 2, 2006 at 6:56pm by Tracy

pre-algerbra
"When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates." http://www.eduplace.com/math/mathsteps/6/e/
Monday, April 7, 2008 at 5:05pm by Ms. Sue

related rates problems
Water pours out of a conical tank of height 10 feet and radius 4 feet at a rate of 10 cubic feet per minute. How fast is the water level changing when it is 5 feet high?
Thursday, December 30, 2010 at 8:02pm by elizabeth

law
Over the past decade, some countries have shown high crime rates while other countries have lower crime rates. For example, the lowest homicide rates in 2000 existed in Saudi-Arabia and Japan, while France and Germany had the highest homicide rates. Their rates, however, were ...
Sunday, January 2, 2011 at 7:27pm by michelle

Micro Economics
take a shot. What do you think. Hint: what could a spread between short-term rates and long-term rates imply about what people see in the future.
Friday, February 1, 2008 at 8:25pm by economyst

Related rates
Since we assume that the pile of sand forms a cone, the height of the cone is equal to height of the sand pile
Monday, May 14, 2012 at 11:49pm by Reiny

social problems
Increase in divorce rates over the last century related to :A)rejection of the ideology of the "good"family B) increasing financial independence of woman c)increasing abuse and conflict in families d) change in social norms toward greater acceptance of divorce IS C CORRECT ...
Wednesday, February 23, 2011 at 1:52pm by vedrana

Psychology 240
If this is related to your previous post, I don't know whether you are referring to humans or any species. Some of the factors like diet, protection and feeding of young etc. would effect survival rates, which in turn could have an impact on evolution. These behaviors must be ...
Thursday, January 21, 2010 at 4:59pm by PsyDAG

Related rates-calculus
The surface area of the soup times its speed down = 40 ml/min By the way on ml is 1 cubic centimeter so no conversion is required Just find surface area from pi r^2 where r is the radius of the surface when 2 cm depth is reached.
Sunday, November 13, 2011 at 7:37pm by Damon

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