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April 16, 2014

Search: calculus-rate problem

Number of results: 75,595

calculus
My problem is that a stft above the sidewalk. a man 6ft tall walks away from the light at the rate of 3ft/sec. at what rate is his tip of shadow moving
Tuesday, July 26, 2011 at 12:34am by Abdul Muqsit

calculus
You are letting the air out of a hot air balloon at a steady rate. The volume of the balloon is decreasing at the rate of 10pi m^3/min when the diameter is 45 meters. At what rate is the radius of the balloon changing? I need help! How do I solve this problem? Thank you so ...
Sunday, November 18, 2007 at 12:53am by Anonymous

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
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

calculus
oops. yes. I misread the problem. Didn't see the "rate of change" phrase.
Friday, January 4, 2013 at 11:51pm by Steve

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

calculus-rate problem
A conical tank (with vertex down) is 10 feet acros the top and 12 feet deep. If water is flowing into the tank at a rate of 10 cubic feet per minute, find the rate of change of the depth of the water when the water is 8 feet deep.
Thursday, August 30, 2007 at 1:13pm by beth

Calculus
All you have to do is read the problem and identify p', q, p, and q'. Plug them in to get your change in rate of revenue (R').
Sunday, November 25, 2007 at 7:20pm by Michael

Calculus
What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)
Thursday, May 27, 2010 at 12:13am by Sam

calculus
There is a right triangle with x and y legs labeled B and A, respectively. B is increasing at a rate of 1 m/s and A is decreasing at a rate of 2 m/s. At what rate is the angle theta (located on the leg B) changing when A is 10m and B is 20m?
Wednesday, December 15, 2010 at 10:07pm by Nimra

Word Problem-Calculus
A spherical balloon is being inflated in such a way that its radius increases at a rate of 3 cm/min. If the volume of the balloon is 0 at time 0, at what rate is the volume increasing after 5 minutes? my answer is 45 cm/min. is this right. thanks
Thursday, March 14, 2013 at 2:13pm by Mark

Calculus
At the moment OHaganBooks is selling 1000 books per week and its sales are rising at a rate of 200 books per week. Also, it is now selling all its books for $20 each, but the price is dropping at a rate of $1 per week. I need to know at what rate OHaganBooks' revenue is rising...
Saturday, November 24, 2007 at 10:52am by Julie

Calculus
At the moment OHaganBooks is selling 1000 books per week and its sales are rising at a rate of 200 books per week. Also, it is now selling all its books for $20 each, but the price is dropping at a rate of $1 per week. I need to know at what rate OHaganBooks' revenue is rising...
Sunday, November 25, 2007 at 5:26pm by Destinee

Chemistry
rate 1 = k*(PCl3)^0(Cl2)^y rate 2 = k*(PCl3)^0(Cl2)^y The problem says rate increases by 4 when we double Cl2. So let's do that. Let's call rate 1 = 1 to make things simple; also, since (PCl3)^0 = 1 we can dispense with that, too. Then we will call (Cl2)= 1 with rate 1, again...
Wednesday, February 27, 2008 at 5:33pm by DrBob222

Calculus Precalculus
I didn't find any other calculus problem posted by you in the last 24 hours. Please repost the problem and how you think it can be solved.
Saturday, August 27, 2011 at 7:41pm by Ms. Sue

calculus
Most of the cells are on the edge,so A'=k(sqrt(A)) which implies that growth rate is proportional to diameter. growth rate= k(sqrt(A) * (9-A) growth rate ' = -ksqrtA+ k/2sqrtA * (9-A) set growth rate '=0 2A=(9-A) or A=3cm^3
Wednesday, March 24, 2010 at 4:51pm by bobpursley

Calculus
At the moment OHaganBooks is selling 1000 books per week and its sales are rising at a rate of 200 books per week. Also, it is now selling all its books for $20 each, but the price is dropping at a rate of $1 per week. I need to know at what rate OHaganBooks' revenue is rising...
Sunday, November 25, 2007 at 7:20pm by PLEASE HELP! PR

Calculus
Calculus If V volts are measured across a resistance of R ohms in a circuit carrying a current of I amperes, V=IR. At a certain instant, the voltage is 250 and is increasing at a rate of 4 volts/min, while the current is 0.5 AMP and is increasing at a rate of 0.01 amp/min. ...
Thursday, February 28, 2013 at 10:59am by Trevor

Calculus
Sand is being dumped from a conveyor belt at a rate of 20 cubic ft/min into a pile the shape of an inverted come whose diameter and height are always the same. (a) Find the rate of increase of the height when the pile is 10ft high. This is a 2 part problem. Please show me how ...
Monday, November 28, 2011 at 12:34pm by Nathaniel

Calculus
So sales must increase at a rate of 300 books per week. Thank U So much! im gonna work on the second half of the problem now.
Sunday, November 25, 2007 at 7:20pm by PLEASE HELP!

calculus
the management of a company has decided that the level of its investment should not exceed C dollars. Furthermore, managament has decided that the rate of net investment (the rate of change of the total capital invested) should be proportional to the difference between C and ...
Tuesday, April 10, 2012 at 11:38am by mari

MATH
Rate Problem: Mr. Stewart rode a distance of 12miles out into the country on a bicycle and returned on foot. His rate on the bicycle was 4 times his rate on foot. He spent 5 hours on the entire trip. Find the rate of walking and on the bicycle.
Tuesday, October 23, 2007 at 7:03pm by Michi

CALCULUS
A 25 ft ladder is leaning against a vertical wall. At what rate (with respect to time) is the angle theta between the ground and the ladder changing, if the top of the ladder is sliding down the wall at the rate of r inches per second, at the moment that the top of the ladder ...
Thursday, March 29, 2012 at 7:26pm by Anonymous

Calculus
A certain calculus student hit Mrs. Evans in the head with a snowball. If the snowball is melting at the rate of 10 cubic feet per minute, at what rate is the radius of the snowball changing when the snowball is 1 foot in radius?
Sunday, November 6, 2011 at 6:51pm by Rina

Calculus
Yes Reiny i know the Ehrenberg's equation it is ln W = ln 2.4 + 1.84h. It is finding the derivatives to find the rate of change for the child i am having a problem with
Monday, April 15, 2013 at 1:26pm by Deen

Calculus
How would you solve this problem: An airplane is flying in still air with an airspeed of 240 mph. If it is climbing at an angle of 22 degrees, find the rate at which it is gaining altitude.
Wednesday, November 17, 2010 at 10:01pm by Anonymous

organic chemistry
Hi, I was wondering if somebody could help me out with this problem which says: "Why does changing the base have no effect on the rate of an E1 reaction while it does affect the rate of an E2 reaction?" I would appreciate any help I can get on this problem! Sincerely, Manny
Saturday, November 10, 2007 at 1:26pm by manny

mathematics
need help badly. this is the math problem. is the rate three-forth's cup of butter/ 3 eggs equivalent to the rate of 3 cups of butter/12 eggs? Please show the work so I can study this equation for my next problem. thanks kindly
Sunday, August 29, 2010 at 11:23am by cindy

Math
dq/dt is rate of q changing with respect to time. It is a calulus term. dx/dt is rate of change of x, and so on. That is what surprised me about the question, rate is a calculus term.
Friday, December 4, 2009 at 4:05pm by bobpursley

Calculus
A spherical balloon a has a diameter 2 m when it is 1500m high . It is observed that the diameter increases at a constant rate of 4cm/min as it continues to rise. At what rate is the volume increasing when the diameter is 4m . At what rate is the surface area imcreasing then?
Sunday, March 13, 2011 at 11:22pm by Mehak

Calculus
b = the number of books c = the cost of each book db/dt = the rate of change of the number of books sold dc/dt = the rate of change of the cost of each book We're given all this information in the problem, so all we have to do is plug that into our equation.
Saturday, November 24, 2007 at 10:52am by Michael

math(rate of change)
I assume you are not a calculus student. avg rate= (f(6)-f(0))/(6-0)=(48-0)/6=8
Saturday, April 9, 2011 at 8:02pm by bobpursley

calculus
Find the rate of change of the area of a circle with respect to the radius r. What is the rate when r = 12
Wednesday, November 23, 2011 at 1:51am by billy

Calculus
If we expect the rate to be nonnegative, we must have 0 ≤ y ≤ a and 0 ≤ y ≤ b. Since we assume a < b, we restrict y to 0 ≤ y ≤ a. In fact, the expression for the rate is nonnegative for y greater than b, but these values of y are not ...
Sunday, April 10, 2011 at 7:00pm by helplessHelper

Calculus
for f(x)=-x^2 +1, which value is the largest magnitude? a) average rate of change from x=-1 to x=1 b) instanteneuous rate of change at x=3 c) instanteneous rate of change at x=0 average rate of change from x=-4 to x=0
Wednesday, July 4, 2012 at 9:31pm by g

chemistry
At the instant oxygen is reacting at the rate 5.0 x 10-4 mol/L*s, at what rate is NO reacting and NO2 forming? this is a method of initial rate problem. i don't know what to do the chemical equation is 2 NO(g) + O2 (g) ---> 2 NO2 (g)
Saturday, September 8, 2007 at 6:26pm by Chris

Personal Finance
$64,228.24 1.[(40000+4000)/75%]+(50*12) 2.40000-(1000*12)3.52000-60600 4.8600*(rate*#yrs+1).There it is. All you have to do is compute the real return rate for the years off the chart. This problem is an annuity problem. We learned it in week one!
Friday, January 25, 2008 at 5:12pm by Anonymous

calculus
I have the following problem on a takehome assignment and am stuck. A particular stock has value V(t) at time t where V(t)=Ke^(1/2) where K>0. Assume that alternative investments grow in value to e^(rt). Calculate the instantaneous rate of change in the value of the stock. ...
Sunday, March 16, 2008 at 8:30pm by Rey

calculus
Can someone tell me how to do this type of problem? A particle moves along the curve y=sqrt(1+x^3). As it reaches the point (2,3) the y coorindate is increasing at a rate os 4cm/s. How fast is the x coordinate of the point changing at that instant?
Monday, February 21, 2011 at 12:58pm by Susie

Finite Math
Just saw your other post. What don't you understand? I will do the quarterly rate problem. Let the effective annual rate be i so the interest factor will be (1+i)^1 for one year (you should know the (1+i)^n part) you want this to be equal to a rate of 6% per annum compounded ...
Friday, May 6, 2011 at 5:09pm by Reiny

Calculus
(It's a related rate question) A man 6ft tall walks away from a lamp post (15ft) at 5ft/sec. How fast is his shadow lengthening? --- I have the picture, and the constants, the man and the lamp post. I have 5ft/sec as dw/dt, and I know I'm looking for ds/dt, the rate of the ...
Sunday, September 12, 2010 at 1:59pm by Nikki

AP CALCULUS!! HELPPP URGENT
hint: the surface area of the water times the rate of change of depth equals the 2 m^3/second inflow rate.
Friday, April 15, 2011 at 5:39am by Damon

Algebra
I hope that I am typing this particular problem right because this algebra problem was provided on a chart. However, I can't copy and paste the chart on here. The problem says "The given graph represents the number of active servicemen in the region who are overweight." Find ...
Saturday, February 8, 2014 at 3:41pm by Student5

Calculus
Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework: Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density function p(x,y)= x^...
Thursday, December 3, 2009 at 10:01am by shylo

college algebra
Solve the problem. A man rode a bicycle for 12 miles and then hiked an additional 8 miles. The total time for the trip was 5 hours. If his rate when he was riding a bicycle was 10 miles per hour faster than his rate walking, what was each rate?
Wednesday, February 25, 2009 at 11:09am by megan

calculus
The length l of a rectangle is decrasing at a rate of 5 cm/sec while the width w is increasing at a rate of 2 cm/sec. When l = 15 cm and w = 7 cm, find the following rates of change: The rate of change of the area: Answer = cm^2/sec. The rate of change of the perimeter: Answer...
Thursday, September 27, 2012 at 6:59pm by Avi

math word problem
word problem need help: suppose you own a card shop. you buy one line of cards at a rate of 4 cards for $5. you plan to sell the cards at a rate of 3 cards for $5 how may carfds must you sell in order to make a profit of $100.00 i dont understand how to get answer can you help
Saturday, September 8, 2012 at 3:49pm by marko

calculus-rate problem
Let h be the depth. Then the base radius (at the top) at depth h is 5*h/12. So volume of water is V= 1/3 PI (5h/12)^2 h take the derivative, set it equal to 10, solve for dh/dt when h=8
Thursday, August 30, 2007 at 1:13pm by bobpursley

Chemistry
I'm surprised they aren't given in the problem. At any rate, look up the specific heat of Al from problem 1 and Cd from problem 2. Problem 3 gives you temperatures and you are to calculate specific heat. The specific heat of water is 4.184 Joules/grams or 1.0 calories/gram.
Wednesday, September 23, 2009 at 8:18pm by DrBob222

related rates with work shown
this is a relate rates problem in calculus in a right triangle, the hypotenuse is 5 and the vertical side is x and the angle is theta. so if theta increases at a constant rate of 3 radians per minute, at what rate is x increasing in units per minute when x equals 3 units? d(...
Sunday, April 15, 2007 at 2:36pm by Anonymous

chemistry
I have a problem like this: CHCl3 + Cl2 = CCl4 +HCL This is the rate table: CHCL3 Cl2 Initial Rate .010 .010 .0035 .020 .010 .0069 .020 .020 .0098 .040 .040 .027 They want me to find the rate constant and the rate law.
Saturday, February 23, 2013 at 10:18am by Nancy

Calculus
At the moment OHaganBooks is selling 1000 books per week that is book rate b and sales are rising at a rate of 200 books per week.that is db/dt Also, it is now selling all its books for $20 each,Pbut the price is dropping at a rate of $1 per weekdP/dt . I need to know at what...
Saturday, November 24, 2007 at 10:52am by bobpursley

Calculus Rate of Change
Find the average rate of change h(x)=2x^2-4 from x=2 to x=6 Simplify your answer as much as possible
Tuesday, March 25, 2014 at 10:27am by Shelby

pre calculus
Jack invests $1000 at a certain annual interest rate, and he invests another $2000 at an annual rate that is one-half percent higher. If he receives a total of $190 interest in 1 year, at what rate is the $1000 invested?
Tuesday, March 4, 2014 at 12:46am by Danielle

calculus
Let F(s)=5s2+1s+4. Find a value of d greater than 0 such that the average rate of change of F(s)from 0 to d equals the instantaneous rate of change of F(s)at s=1.
Monday, February 1, 2010 at 5:31pm by t

calculus
the side of squyare,s, is increasing at a rate of k unites per second. find the rate at which the area of the square is increasing
Monday, November 29, 2010 at 5:22pm by lindy

Calculus
the side of an equilateral triangle decreases at a rate of 3cm/s. at what rate is the area decreasing when the area is 150cm squared?
Sunday, June 19, 2011 at 6:36pm by Simba

Calculus (Help please)
You have found the rate at which the rate is changing. Unfortunately, your question asked for how fast the height is changing.
Monday, January 9, 2012 at 4:40pm by Reiny

college calculus
1) each side of a square is increasing at a rate of 6cm/s. At what rate is the area of the square is 16 cm^2? 2)the radius of a sphere is increasing at a rate of 4mm/s.How fast is the volume increasing when the diameter is 80mm? 3)A particle moves along the curve y= (1+x^3)^1/...
Wednesday, March 31, 2010 at 1:02am by alissa

Calculus
Let F(s)=5s2+5s+4 . Find a value of d greater than 0 such that the average rate of change of F(s) from 0 to d equals the instantaneous rate of change of F(s) at s=1. d=
Monday, September 13, 2010 at 7:21pm by Melissa

Help meee
Answer from spreadsheet Answer from hand calculation Problem #1: Find the total amount if you deposit $500 at a rate of 5% for two years using simple interest. Year 1 Year 2 Problem #2: Find the total amount if you deposit $300 at a rate of 6% for three years using simple ...
Wednesday, April 17, 2013 at 3:58pm by Katie

Algebra 2
You have titled the post "algebra 2". Does that mean that you have done calculus, or should the solution be without calculus? We usually solve maximization problems by linear programming or calculus. However, this problem can also be solved by tabulation without using calculus...
Thursday, February 24, 2011 at 10:33pm by MathMate

Calculus
let the rate be i then .... 196000(1+i)^5 = 276000 (1+i)^5 = 1.408163... i+i = 1.07085 ..... I took the fifth root of both sides i = .07085 the effective rate was 7.09%
Sunday, July 15, 2012 at 10:30pm by Reiny

Calculus
(a) just plug in t=2 (b) f' = 1.207 e^.71t So, express f'(2) as a % (c) f' is the rate of change. To find how fast the rate is changing, use f". f" = 0.857 e^.71t
Thursday, July 11, 2013 at 7:20pm by Steve

chemistry
Which of the following rate laws suggests that the reaction probably occurs in a single step? why is this problem cant be answer a since it has order of 1 a)(CH3)3CBr + OH- →(CH3)3COH + Br- rate = k[(CH3)3CBr] b)NO(g) + O2(g) → NO2(g) + O(g) rate = k[NO][O2] c)H2O2...
Monday, May 17, 2010 at 9:31pm by eng

chemistry
Which of the following rate laws suggests that the reaction probably occurs in a single step? why is this problem cant be answer a since it has order of 1 a)(CH3)3CBr + OH- →(CH3)3COH + Br- rate = k[(CH3)3CBr] b)NO(g) + O2(g) → NO2(g) + O(g) rate = k[NO][O2] c)H2O2...
Tuesday, May 18, 2010 at 12:34am by eng

Calculus
Water flowing into a hemispherical tank of 5m radius at a rate of ((3m^3)/(hr)) Determine the rate at which the depth of water increases.
Saturday, November 3, 2012 at 11:53pm by Daniella

AP Calculus
At what value of h is the rate of increase of √h twice the rate of increase of h? (a) 1/16 (b) 1/4 (c) 1 (d) 2 (e) 4
Thursday, December 22, 2011 at 9:54pm by T

calculus
Rate of change is 2 because you have a line the rate of change (slope) is constant
Saturday, December 15, 2012 at 10:06pm by Mac

Macroeconomics
Sally had a nominal capital gain of $200. With a 50% tax rate, she has a $100 liability. I believe the inflation rate is a red herring in this problem
Tuesday, May 20, 2008 at 5:25pm by economyst

ratio and rate
As a teacher I can't be a party to misinformation. In this case, the rate quoted is at least 10 times faster than normal. I believe that Tristan miscopied the problem.
Saturday, November 24, 2012 at 10:32pm by Ms. Sue

Calculus Please help!
The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 3500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 7000 centimeters and the area is 87000...
Friday, February 28, 2014 at 2:51pm by ALI

calculus
is average rate of change and average value the same or will you get a different answer for each this is calculus so it's the mean average. it's using the formula and integrating. I dont understand your question, but I can assure you that average rate of change and average ...
Thursday, April 12, 2007 at 4:35pm by david

calculus
if a snowball melts so that its surface area decreases at a rate f 1cm^2/min, find the rate at which the diameter decrease when the diameter is 10cm?
Friday, October 25, 2013 at 6:56pm by Briasn-Ismael vargas

Please Help!!!!!!
Decide whether the following problem can be solved using precalculus, or whether calculus is required. If the problem can be solved using precalculus, solve it. If the problem seems to require calculus, explain your reasoning and use a graphical or numerical approach to ...
Monday, January 9, 2012 at 5:00pm by Anonymous

Math - Ratio or Proportion (I think??)
figure food at rate per person day. amount of food=rate/person*persons*time rate= 6/(3*5) so amount of meat= (rate)people*time = 6/15 * 5*7 = you do it. 2. ratio problem; 1.5yards/2inches=1yard/Xinches xinches=1*2inches/1.5= 4/3 inch
Monday, January 27, 2014 at 7:15pm by bobpursley

calculus-changing voltage
V = IR V is increasing at the rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t = time in sec What is dV/dt? What is dI/dt? Find the rate at which R is changing when V = 12 volts and I = 2 amp
Saturday, December 9, 2006 at 1:18pm by mansoor

Calculus Homework
You are blowing air into a spherical balloon at a rate of 7 cubic inches per second. The goal of this problem is to answer the following question: What is the rate of change of the surface area of the balloon at time t= 1 second, given that the balloon has a radius of 3 ...
Wednesday, October 16, 2013 at 10:49pm by Kelly

Fluid Mechanics
find dV/dt out of the exit pipe. (if you are not in calculus,dV/dt is the flow rate of the water out). That will equal the flow rate of the air coming in, then convert that flow rate to velocity.
Tuesday, September 10, 2013 at 5:35pm by bobpursley

calculus
I need help setting up this problem: A particle moves along the curve y=sqr(1+x^3). As it reaches the point (2,3) the y-cordinate is increasing at a rate of 4cm/s. How fast is the x-coordinate of the point changing at that instant. I could only come up with this: dy/dx=4
Friday, May 8, 2009 at 9:16am by XCS

physics
The flow rate of a liquid through a 2.0cm radius pipe is 0.0080 m^3/s. the average fluid in the pipe is? i know that Av=volume flow rate for this problem the flow rate is 0.008m^3/s. Do i divide by the radius^2 to get velocity or is there someother equation im supposed to be ...
Sunday, November 11, 2007 at 6:11am by BrOwN GuRL

math
Problem #1: Find the total amount if you deposit $500 at a rate of 5% for two years using simple interest. Year 1 Year 2 Problem #2: Find the total amount if you deposit $300 at a rate of 6% for three years using simple interest. Year 1 Year 2 Year 3 Problem #3: Find the total...
Friday, April 12, 2013 at 10:57am by Boobear

calculus-changing voltage
V = IR V is increasing at the rate of 1 volt/sec while I is decreasing at the rate of 1/3 amp/sec. Let t = time in sec What is dV/dt? What is dI/dt? Find the rate at which R is changing when V = 12 volts and I = 2 amp. Thanks. Please ignore this. I got the answer.
Saturday, December 9, 2006 at 1:18pm by Jen

chemistry
rate rxn = k[O3][NO] Substitute for k and each of the cncns (given in the problem) and solve for rate of rxn.
Friday, March 23, 2012 at 1:34pm by DrBob222

Math
that would be dy/dx = -8x - 17 I am somewhat bothered by your question. If you are studying Calculus, then you should have known the answer. If you are not taking Calculus, then the question does not belong. The type of problem you asked is fundamental to the study of Calculus.
Sunday, January 25, 2009 at 12:04am by Reiny

Calculus Please Help
Given the numerical values shown for the function f(x), find approximate values for the derivative of f(x) at each of the x-values given. x= 0 1 2 3 4 5 6 7 8 f(x)= 13 15 16 17 17 14 11 9 7 f'(x)= 2 1 1 1 0 -3 -3 -2 -2 What seems to be the greatest rate of change of f(x)? rate...
Monday, February 21, 2011 at 8:45pm by Celine

Chemistry
IF the rate of consumption of N2)4 (below) is .0221, what is the rate of production of NO2? N2O4(g)<->2NO2(g) Please help and explain. BC i have to actually understand how to do the problem. Thanks
Sunday, January 23, 2011 at 1:58pm by Amber

Calculus
Determine the maximum sustainable yield (the maximum harvesting and still keep the population stable) of population of logistic growth is Kr/4. I know the logistic equation with constant harvest rate, h, is dx/dt=rx((1-x/k)-h) I do not know how to apply that to the problem...
Wednesday, December 14, 2011 at 10:32pm by L.S.

4 CALCULUS study problem
1. How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dV/dt, the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we want to find is dr/...
Thursday, January 9, 2014 at 1:23pm by Samantha

Calculus
for (a) since a < b , for a certain value of y , the value of (a - y) will become negative first, and thus the Rate becomes negative,, then after some time (b - y) will become negative too, and the Rate becomes positive. let's look at some points: at 0 <= y < a , Rate...
Sunday, April 10, 2011 at 12:23am by Jai

math
Okay so i here is the problem......find the unit rate. I dont remember how to solve for the unit rate. Help me please i have a quiz tomorrow.
Monday, January 9, 2012 at 7:24pm by kayla

pre-calculus
For groups of 80 or more people, a charter bus company determines the rate per person according to the formula: Rate=8-0.05(n-80),n(greater than or equal to)80 where the rate is given in dollars and 'n' is the number of people. Now, Express the revenue 'R' for the bus company ...
Friday, October 3, 2008 at 9:28pm by aelisha

MATH
You're right for the monthly rate. However your problem asks for the APR -- the annual percentage rate. Multiply your answer by 12 to get the APR.
Saturday, November 5, 2011 at 7:41pm by Ms. Sue

chemistry
A first-order reaction is 40% complete at the end of 50 minutes. What is the value of the rate constant (in min^-1)? A. 1.8 x 10^-2 B. 1.0 x 10^-2 C. 1.2 x 10^-2 D. 8.0 x 10^-3 E. none of these how would i approach this problem? i know that to find the rate constant, i could ...
Monday, May 26, 2008 at 7:42pm by jesse may

Chemistry
Calculate the rate at which N2O4 is formed in the following reaction at the moment in time when NO2 is being consumed at a rate of 0.0521 M/s. 2NO2(g) <-> N2O4 (g) I am not really sure how to go about this problem. rate = k (N2O4) d(NO2)/dt = -2 d(N2O4)/dt This is what I...
Tuesday, May 19, 2009 at 11:14pm by Martin

Chemistry
A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be a) rate = k (A)^2 b) rate = k (B)^2 c) rate = k (A) (B) d) rate = k (A) (B)^2 I think its D because there are 2 moles of B and 1 mole of A. Do you agree with my ...
Friday, February 24, 2012 at 2:34am by Mohamed

computers
Problem Solving INCORRECT PAY RATE: Recently you received a promotion that indicated a pay raise. You log into your company portal and verify that your rate of pay has increased. After receiving your next paycheck, however, you realize that you were paid at the previous rate ...
Friday, April 26, 2013 at 4:56pm by Anonymous

Calculus
r = 1 meter dr/dt = .02m/min This is the same idea as your cone problem. The rate of change of the volume is the rate of change of the surface area times the added thickness of the surface, dr/dt In other words: dV/dt = 4 pi r^2 dr/dt surface area = A = 4 pi r^2 dA/dr = 8 pi r...
Sunday, March 13, 2011 at 11:22pm by Damon

calculus
I need help with this calculus problem. H(S)=S/(1+S) If F 1/2, -1/2 & (a+1)? I can't figure out what this mean /?
Monday, May 30, 2011 at 12:46pm by Tammy

calculus
The altitude of a triangle is increasing at a rate of 3.000 centimeters/minute while the area of the triangle is increasing at a rate of 2.500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9.000 centimeters and the area is 93...
Monday, May 14, 2012 at 12:26am by remy

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