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December 19, 2014

Posts by robert


Total # Posts: 852

Calculus
67. dy/dx = 0 Would it be all the points of the function.
October 8, 2007

Calculus
55. Find an equation of the tangent line to the graph of f(x) =x^3 - 2x + 1 a) at (2,5); b) at (-1,2); c) at (0,1). I believe the answers are: a) y= (3/2 x) - (3/2) b) No solution c) No solution For each function, find the points on the graph at which the tangent line is ...
October 8, 2007

Maths
bobpursley have I got the answer right to this sequence question 3n - 1 answer 2,5,8,11,14,
September 27, 2007

Maths
bobpursley is this the correct answer to the sequences question 3n-1 Answer 2, 5, 8, 11, 14,
September 27, 2007

Maths
The Full question is Write down the first five terms for these rules a) 2n + 2 b) 3n - 1 c) 10n + 6
September 27, 2007

Maths
Could somebody help me with this Maths squence 2N + 2, 3N - 1 , 10N + 6
September 27, 2007

English
Is this puncuated correctly
September 23, 2007

English
On his way home from school, Tom found a bag on the ground. "Is this yours?" he asked Tara. "No, it's not my bag! I left mine at school. I think it might be Emma's bag, because hers is blue and green." Tom laughed and said, "You may be right, ...
September 23, 2007

English
Could you Please help me punctuate this paragraph. on his way home from school tom found a bag on the ground is this bag yours he asked tara no its not my bag I left mine at school I think it might be emma's bag because hers is blue and green tom laughed and said you may ...
September 23, 2007

Math, Still Need Help!
Ok, This is the question: The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? This is what I did: 2x+400=1050 -400=-400 ----------- 2x=650 x=325 3y+400=...
September 22, 2007

Math
Ok, I'm really confused. Where did you get 800? I don't really understand. Is it like this: 2(S+A)=400 2S+SA=800 Is this right? If so, what do I do after this?
September 22, 2007

Math
The attendance at a baseball game was 400 people. Student Ticket cost $2 and adult tickets cost were $3. Total Ticket Sales were $1050. How many tickets of each type were sold? Ok, this is what I did: 2x+400=1050 -400=-400 ----------- 2x=650 x=325 3y+400=1050 -400=-400...
September 22, 2007

math
The Rossi family wants to install new tiles on the floor on their kitchen. The tiles they plan to use are 3 in x 3 in squares. The floor space to be covered is shown in the diagram below with measurements given in feet. How many square tiles will the Rossi family need to cover...
September 10, 2007

Math (Sorry, Forgot to add Part B)
For Part A: I multiplied 2*3*2= 12 feet Then I multiplied 10*8*2=160 feet Then I divided 35000 by 13 and got 2692.3, then I rounded it to 2, 692. Is this right? Part B: I really don't understand this one. I tried but I just can't get the answer.
September 5, 2007

Math (Sorry, Forgot to add Part B)
The Pleasant Valley Library is moving to a larger building. To get ready for the move, the staff is packing all of the books into boxes. The library owns 35,000 books. On average, each book measures 8 inches by 10 inches by 2 inches. Each box measures 2 feet by 2.5 feet by 1.5...
September 5, 2007

Econ Help
Please help! Trying to study for exam! An article in the New York Times (Oct. 18, 1990) described a successful marketing campaign by the French champagne industry. The article also noted that “many executives felt giddy about the stratospheric champagne prices. But they ...
September 4, 2007

Econ Help
Trying to study for test, don't understand. (3) Suppose that the slope of a curve showing the relationship between the number of burglaries per month (on the vertical axis) and the number of police officers (on the horizontal axis) is –0.60. a. Compute the change in ...
September 3, 2007

Microecon help
Having trouble with this question on study guide. Please Help! (1) An article in the New York Times (Oct. 18, 1990) described a successful marketing campaign by the French champagne industry. The article also noted that “many executives felt giddy about the stratospheric ...
September 3, 2007

Computer (Excel)
This is my assignment (actually a quiz) You work at an accounting firm and you need to design a spreadsheet for a business customer's income and expenses. The business is divided into four departments: Sales, Marketing, Development, and Executive. Each dept. keeps track of...
June 21, 2007

Economics
In the Monetary policy transmission mechanism, explain what could go wrong between the following points 1. Change in the monetary policy and Change in the money supply 2. Change in the money supply and Change in the aggregate demand curve Change in the aggregate demand curve ...
June 12, 2007

Economics
In the Monetary policy transmission mechanism, explain what could go wrong between the following points
June 12, 2007

Palm beach state college
7/63
May 6, 2007

Math
This problem is really confusing, I have been trying and I can't get the answer, can you help me? An Afternoon event was a race through the park. The race started at the point with the coordinates of (2,3). The first turn was at (2,6), the second turn was (6,6) and the ...
May 6, 2007

UNSCRAMBLE 33 letters to make 9 words
kslilokosloitjebnsjiklecow
April 16, 2007

Math
Hi, I really need help on this question, I'm stuck. Lake View Middle School is having elections for Class President. Shawn has received a certain amount of votes. April has 6 more votes than Shawn, and David has 6 times as many votes as April. Michael received 1/2 the ...
April 14, 2007

Psycology
What makes a stressor worse? repetition, repulsiveness, pressure, or exhaustion
March 20, 2007

Calc Help
Find two functions that this could be the derivative of: y'=4x+7 I have one: y=2x^2 + 7x I cant think of another one!! add a constant. Remember that you can add an arbitrary constant to any integral. The derivative will be the same.
March 7, 2007

Calc Limits
lim (1+x)^1/x. Give an exact answer. x->0 This reads: The limits as x approaches zero is (1 plus x) to the 1 divided by x. The log of each term is (1/x) ln (1 + x) = ln (1+x)/x Using L'Hopital's rule for the limit of f(x)/g(x), the limit if the log is lim f'/g&#...
February 16, 2007

Calc Help
A manufacturer's revuenve in dollars is given by R(x)=1500x-0.02x^2 where x is number of units sold. Find the marginal revenue function. Use the derivative to estimate the revenue gained from selling the 35th unit. The marginal revenue function is the derivative, dR/dx = ...
February 16, 2007

Calc Help
Find the derivative. Express answer in radical notation with no negative exponents. s=4(sqroot t)+(3/t)+2t^5 This reads (4 times the square root of t) plus (3 divided by t) plus 2t to the 5th. Differentiate it one term at a time, using the rule: d/dt(t^n) = n*t^(n-1) s(x) = 4 ...
February 16, 2007

Calc Help
Find the derivative. Express answer in exponential notation without any negative exponents. y= 1/(sqroot5x+2)^3 This reads: 1 divided by the square root of (5x+2) to the third
February 16, 2007

diversity
This is a group with distinct national origins or cultural patterns. For example, Norwegian Americans belong to this type of group. Thank you for using the Jiskha Homework Help Forum. Do you mean "ethnic groups?"
February 7, 2007

Science
What type of energy always stays the same? There are chemical, electric, magnetic, gravitational, nuclear, and thermal (kinetic). All can be changed for the other. I can not think of an exception. Your teacher must have something specific in mind, I have no idea.
February 5, 2007

spelling
brother:mother::fly:
January 16, 2007

english
brother:mother::fly:
January 16, 2007

First US Government Building
f*** u
January 12, 2007

english help!!?!?
Mom smiles sweet as cold cash at each salesman in the carpet & dapery store where they offer my sister & me white mints fat as mushrooms while we walk up and down the aisles trying to make earth match the sky. What does the narrator mean when she says “make earth match ...
December 26, 2006

Physics
A roulette wheel with a 1.0m radius reaches a maximum angular speed of 18 rad/s before it stops 35 revolutions ( 220 rad ) after attaining the maximum speed. How long did it take the wheel to stop? Unless you mean the 35 revs occur after max speed, it cannot be solved. The ...
December 19, 2006

Chemistry
0.74
November 26, 2006

physics
Must use meters, not kilometers.
November 12, 2006

English question!
what is historical context ? how do I Identify and describe details that develop the historical context of a story? Hi Robert, 'Historical Context' basically means, at what period in history the story is taking place. To identify and describe details that develop the ...
November 10, 2006

English
What is the name of the island in the latest Lemony Snicket book "The End" I'm sure it tells you in the book. Have you read it?? ??
November 9, 2006

English+ check!!!
from informal to formal: Informal: After work, Rebecca hung with her friends for a bit. Nothing much happening. She should of headed off to the store for dinner, but instead she grabbed some junk food. Killed some time by checking out a softball game in the park. formal: After...
November 9, 2006

chemistry
im getting that the moles C = .347 moles H = .436 moles O = 0.025 and getting a formula of C14H17O However, i looked it up on wiki and saw that the formula for ibuprofen is in fact i C13H18O2. the C/H discrepancy is understandable, but the O2 to O is not. Could i have missed ...
October 17, 2006

Simplifly variable Expressions
by dividing 5 into 5 and it equals 1 with a square root of 2 and that equals 1.
September 20, 2006

Simplifly variable Expressions
54n
September 20, 2006

WHAT IS THE PROBLEM?
Is there anyone kind enough to provide any suggestions? I see that others have been responded to at least once and not this one. What is the problem? And if its a matter of not putting a particular subject, than perhaps it should also be addressed to others who do not do it ...
September 5, 2006

Any suggestions? [No subject]
I have a team project due on Saturday. I need to know what how to approach my first appearance. For example, indicate times I am avaliable and mode of communication (not a short bio because I have done that already). What else should I inform the group of me or the project ...
September 4, 2006

problem!
Atherosclerosis is a condition also called "hardening of the arteries", resulting in reduced elasticity of the arteries. Identify two circulatory problems that might arise from this effect on the vessels. I have no idea Atherosclerosis causes two main problems. First...
August 5, 2006

history native american indians
what kind of discrimination has the native american indians dealt with? for example Environmental justice issues Affirmative action Redlining Double jeopardy Institutional discrimination Reverse discrimination I would like to know where I would be able to find this information...
July 26, 2006

Statistics
I'm looking for some help with my statistics homework...I'm good with the basics, but I really bombed on my last class anyone??? To help you, we need to know specifically what problems you have. Please repost with specific problems. I hope this helps a little. Thanks ...
July 13, 2006

Pre Calculas
Complete the identity sin theta / cos theta + cos theta / sin theta = ? Do you mean (sin theta/cos theta) + (cos theta/sin theta) ? That would equal tan x + cot x = tan x + (1/tan x) = (tan^2 x + 1)/ tan x I don't see any way to further simplify it. 1/(cosx)(sinx) or sin^...
June 10, 2006

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