Friday

January 30, 2015

January 30, 2015

Total # Posts: 172

**chemistry**

How many Milliliters of 3.50 M HCl (aq)are required to react 5.75g of Zn(s)?
*November 3, 2014*

**Measurements & statistics in Kinesiology**

In a class of 34 students, how many of them will have a z-score above 1.0?
*July 14, 2014*

**Math - PreCalc (12th Grade)**

If the distance covered by an object in time t is given by s(t) = 2t2 + 3t, where s(t) is in meters and t is in seconds, what is the average velocity over the interval from 2 seconds to 4 seconds? A) 15 meters/second B) 14 meters/second C) 13 meters/second D) 12 meters/second ...
*March 21, 2014*

**Math - PreCalc (12th Grade)**

The function f(x) = 6x + 5 is defined over the interval [-1, 4]. If the interval is divided into n equal parts, what is the value of the right end point of the first rectangle?
*March 21, 2014*

**Math - PreCalc (12th Grade)**

What is the value of this expression when n approaches infinity? 4−(4/n)+(5/n)+(15/3n^2) A) 20 B) 10 C) 5 D) 4 E) 1
*March 21, 2014*

**Math - PreCalc (12th Grade)**

How many 4-digit numbers are possible if the hundreds digit is 8 and if repetition of digits is allowed? A) 100 B) 1,000 C) 9,000 D) 900 E) 1,800
*March 21, 2014*

**Math - PreCalc (12th Grade)**

Which statement about a uniform probability distribution defined on a given interval is true? A) The mean is always 0. B) The mean is always 1. C) The standard deviation is always 1. D) The mean is the midpoint of the interval. E) The standard deviation is equal to the width ...
*March 21, 2014*

**Math - PreCalc (12th Grade)**

The function f(x) = x2 − 5 is defined over the interval [0, 5]. If the interval is divided into n equal parts, what is the area of the kth rectangle from the right? A) [(2+k(5/n))^2+5](5/n) B) [(k(3/n))^2−5](5/n) C) [(k(5/n))^2+5](5/n) D) [(k(3/n))^2+3](5/n) E) [(k...
*March 21, 2014*

**Math - PreCalc (12th Grade)**

A fair coin is tossed 3 times in a row. If X is the number of heads counted, what is the mean of the probability distribution of X? A) 1.0 B) 1.5 C) 2.0 D) 2.5 E) 3.0
*March 21, 2014*

**Math - PreCalc (12th Grade)**

The function f(x) = 2x + 1 is defined over the interval [2, 5]. If the interval is divided into n equal parts, what is the value of the function at the right endpoint of the kth rectangle? A) 2+3k/n B) 4+3k/n C) 4+6k/n D) 5+6k/n E) 5+3k/n
*March 21, 2014*

**Math - PreCalc (12th Grade)**

Use the inverse matrix to solve this system of equations: 4x+3y=7.5 7x+9z=14 4y-z=8.3 4,3,0 7,0,9 0,4,-1
*March 21, 2014*

**Math - PreCalc (12th Grade)**

If Sn = 1 + 6 + 11 + 16 + 21 + 26...... where an = (5n − 4), what would be the mathematical expression represented by Sk + ak + 1? A) (k(5k − 3)/2)+ 5k + 1 B) (k(5k − 3)/2)+ 5k − 4 C) (k(5k − 3)/2)+ 5k + 2 D) (k(5k − 3)/2)+ 5k − 3 E) (...
*March 20, 2014*

**Math - PreCalc (12th Grade)**

What is the slope of the tangent line passing through the point (2, 3) of the graph of this function? f(x)=x^2+2x−5 A) 1 B) 2 C) 3 D) 4 E) 6 f(2)=2^2+2(2)-5 f(2)=3 so is it c?
*March 20, 2014*

**Math - PreCalc (12th Grade)**

So it is D?
*March 20, 2014*

**Math - PreCalc (12th Grade)**

What value must be defined for f(4) to remove the discontinuity of this function at x=4? f(x)=(x^2−16)/(x−4) A) 0 B) 4 C) -4 D) 8 E) -8 f(4)=(4^2−16)/(4−4) f(4)=0/0 you can't divide by zero. I don't understand the question.
*March 20, 2014*

**Math - PreCalc (12th Grade)**

I believe it is A. But I'm not sure.
*March 20, 2014*

**Math - PreCalc (12th Grade)**

Which statement is true for any linear system of two equations in two variables? A) The system is independent if the slopes of the two lines are equal. B) The system is inconsistent if the y-intercepts of the two lines are equal. C) The system is independent if the graphs of ...
*March 20, 2014*

**Math - PreCalc (12th Grade)**

I chose C. Is that correct?
*March 20, 2014*

**Math - PreCalc (12th Grade)**

x->4**
*March 20, 2014*

**Math - PreCalc (12th Grade)**

Which combination of limit properties is required to evaluate this limit? lim x->((24/x)-2x+2)^3 A) sum, difference, product, root B) sum, difference, product, power C) sum, difference, quotient, power D) sum, difference, quotient, root E) A limit does not exist.
*March 20, 2014*

**Math - PreCalc (12th Grade)**

If Sn represents the sum of the squares of the first n natural numbers, use proof by induction to find which of the following expressions for Sn is true? A) Sn = n(n − 1)/3 B) Sn = n(2n − 1)/3 C) Sn = n(n + 1)/3 D) Sn = n(n + 1)(2n + 1)/3
*March 20, 2014*

**Math - PreCalc (12th Grade)**

Thank you!! you really are helping me alot.
*March 19, 2014*

**Math - PreCalc (12th Grade)**

Honestly, i don't get any of them..
*March 19, 2014*

**Math - PreCalc (12th Grade)**

What is the first natural number that causes the statement 1 + 3 + 5 +... + (2n − 1)<=4n − 1 to fail? A) 2 B) 3 C) 4 D) 5 E) 6
*March 19, 2014*

**Math - PreCalc (12th Grade)**

So would it be none of the above?
*March 19, 2014*

**Math - PreCalc (12th Grade)**

What does this function show at x = 5? f(x)=x^2−25/x−5 A) removable discontinuity B) jump discontinuity C) infinite discontinuity D) continuity E) none of the above
*March 19, 2014*

**Math - PreCalc (12th Grade)**

What is the first natural number that causes the statement:(2+3)^n<=4^n+3^n to fail? A) 1 B) 2 C) 3 D) 4 E) 5
*March 19, 2014*

**Math - PreCalc (12th Grade)**

-1 ?
*March 19, 2014*

**Math - PreCalc (12th Grade)**

What is the right-hand limit of this function at x=2? g(x)=x^2−3/x−3 A) -1 B) 0 C) 1 D) 2 E) 3
*March 19, 2014*

**Math - PreCalc (12th Grade)**

What is the left-hand limit of f(x)=|x−3|/x−3 as x approaches 3? A) 1 B) 2 C) 0 D) -1 E) -2
*March 19, 2014*

**Math - PreCalc (12th Grade)**

As explained , C, D and E cannot be correct. A + B + C = 15000 A = B + C + 3000 3A + 2B + 2C = 30000 Solve these equations to get A, B and C
*March 19, 2014*

**Math - PreCalc (12th Grade)**

I believe combined.
*March 19, 2014*

**Math - PreCalc (12th Grade)**

Jake has decided upon three business ventures to invest in. The total cost of investing in all three ventures will be $15,000. Investing in the first venture will cost $3,000 more than investing in both the second and the third venture. According to Jake’s research, his ...
*March 19, 2014*

**Math - PreCalc (12th Grade)**

If the length of the minor axis of an ellipse is 6 units and the length of the major axis is 10 units, how far from the center are the foci located? A) 4 units B) 2 units C) √4 units D) √8 units E) 5 units
*March 19, 2014*

**PRE-CALC**

A number is selected at random from the set {2, 3, 4, … ,10}. Which event, by definition, covers the entire sample space of this experiment? A) The number is greater than 2. B) The number is not divisible by 5. C) The number is even or less than 12. D) The number is ...
*March 18, 2014*

**Math**

The supply and demand for a business manufacturing toy cars are given by these two equations, where y is the price in dollars per item and x is the number of toy cars sold in thousands. Supply: y = x^2 − x + 0.5 Demand: y = x^2 − 1.6 The two graphs intersect at the...
*March 18, 2014*

**Math**

What is the limit of f(x)=4x^2−6/4x^2−1 as x approaches infinity? A) 1 B) 3 C) 4 D) 6 E) -4
*March 18, 2014*

**Math**

Point A lies at (2, 3) on a coordinate system. If the coordinate axes are rotated 45°, what is its position on the new coordinate system?
*March 18, 2014*

**Math (7th grade)**

I have a math question that I do not really understand how to answer is there someone who can walk me through it? In Pinecrest middle school there are 58 6th graders 76 7th graders, and 38 8th graders. The counsel is made up of 35 students who are chosen to represent all three...
*December 17, 2013*

**Physics **

A car starts from rest on a curve with a radius of 150m and tangential acceleration of 1.5m/s2 . Through what angle will the car have traveled when the magnitude of its total acceleration is 2.6m/s2 ?
*October 16, 2013*

**Economics**

Which of these products or services is likely to have an inelastic supply in the short run? A. cargo ships B. haircuts C. newspapers D. staples I chose D and got it wrong so would it be C instead?
*November 5, 2012*

**American History**

Did the Taft-Hartley act of 1947 strengthen the Wagner Act? I'm not really sure, but I thiiiiiiink it did.
*October 18, 2012*

**American History**

Never mind:) it is southeast:)
*October 17, 2012*

**American History**

Were the majority of states that did not ratify the Equal Rights Amendment located in the Southeast?
*October 17, 2012*

**american history**

Was Zbigniew Brzezinski directly involved in continuing the SALT talks or did he try to reverse the policy of detente, during the Carter administration? Those are 2 of the 4 multiple choices given to me to answer the question,but I'm confused because I'm pretty sure he...
*October 1, 2012*

**Daily word problems**

You Must divide 294 by 1/3 to get the length of the missing side of the building. You get 98. Then you add all the sides together to get the perimeter. 294+294+98+98=784 The sign will be 784 feet long.
*October 1, 2012*

**american history**

Thank you
*September 27, 2012*

**american history**

Was it Ivy Lee or Henry Ford that pioneered the field of corporate public relations? Ive read that Ivy is considered one of the founding fathers of the public relations but then I also read that Henry was the first major industrialist to use the public relations concepts!
*September 27, 2012*

**Math**

For every 4 miles, she sees 1 sign. There are 36 miles. 36/4=9 She will see 9 signs
*September 27, 2012*

**american history**

Ok, I know it isn't D because Spanish troops called the black soldiers that...
*September 27, 2012*

**Math**

44 is greater than 43 and less than 52 and 4+4=8
*September 27, 2012*

**american history**

Oh ok. I was misinterpreting it. Haha. Thank you
*September 27, 2012*

**american history**

Ok so it was W.E.B Du Bois?
*September 27, 2012*

**american history**

The Niagara Movement, headed by ____, sought equal rights for blacks A: William Lloyd Garrison B: William E Walling C: Booker T Washington D: W.E.B Du Bois I'm torn between C and D. The book I'm studying from and the websites I've looked at aren't very clear.
*September 27, 2012*

**Order of Operations**

I got 31.166 repeating?
*September 27, 2012*

**american history**

Thank you
*September 27, 2012*

**american history**

Theodore Roosevelt's first major trust-busting victory resulted from a suit brought against____
*September 27, 2012*

**american history**

Thank you very much! I'm awful in this subject, I always have been:/
*September 27, 2012*

**american history**

Following the Spanish-American War, and especially in regard to American occupation of the Philippines, most anti-imperialists argued that____
*September 27, 2012*

**Economics**

The answer is A because the other choices have requirements you have to meet before you are considered. Most organizations have to invite you to join
*May 15, 2012*

**Economics**

it's not staples
*April 19, 2012*

**types of business writing**

Fixed :) BROADWORTH GENERAL HOSPITAL Interoffice Memo TO: Miriam Hopkins, Director of Human Resources FROM: Shawna Parker, Administrative Assistant DATE: March 22, 2012 SUBJECT: Sexual Harassment and unlawful discrimination in the workplace seminar We have received ...
*March 29, 2012*

**types of business writing**

Revised and wanting to know if it's ready for submittance: BROADWORTH GENERAL HOSPITAL Interoffice Memo TO: Miriam Hopkins, Director of Human Resources FROM: Shawna Parker, Administrative Assistant DATE: March 22, 2012 SUBJECT: Sexual Harassment and unlawful discrimination...
*March 29, 2012*

**Types of Business writing**

Is this better the second occasion was help-line? Can I submit do you think? TO: Deb.Walker@ CC: Jeremy.Dittmer@; m_hopkins@ SUBJECT: Sexual harassment and unlawful discrimination in the workplace seminar Dear Deb: I would like to confirm the arrangements for our seminar about...
*March 29, 2012*

**Types of Business writing**

Revised ...Let me know if it's ready for submittance: TO: Deb.Walker CC: Jeremy.Dittmer@; m_hopkins@ SUBJECT: Sexual harassment and unlawful discrimination in the workplace seminar Dear Deb: I would like to confirm our arrangements for our seminar about sexual harassment ...
*March 29, 2012*

**Types of Business writting**

Supplying probably lol :)
*March 29, 2012*

**Types of Business writting**

Revised and errors corrected , is it ready for submittance? Dear Mr. Dittmer: I am writing to you to request a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would also like to take ...
*March 29, 2012*

**types of business writing**

Memorandum Revised: BROADWORTH GENERAL HOSPITAL Interoffice Memo TO: Miriam Hopkins, Director of Human Resources FROM: Shawna Parker, Administrative Assistant DATE: March 22, 2012 SUBJECT: Sexual Harassment and unlawful discrimination in the workplace seminar We have received ...
*March 26, 2012*

**Types of buisness writing**

Email Revised TO: Deb.Walker@ CC: Jeremy.Dittmer; m_hopkins@ SUBJECT: Sexual harassment and unlawful discrimination in the workplace seminar Dear Deb: I would like to confirm our arrangements as we previously discussed on our seminar about sexual harassment and unlawful ...
*March 26, 2012*

**Types of Business writing**

REVISED : Dear Mr. Dittmer: I am writing to you to request a trainer for our seminar on sexual harassment and unlawful discrimination in the workplace for twenty of our office supervisors. Our company would also like to take this opportunity to thank you for Wydade’s ...
*March 26, 2012*

**types of business writing**

Draft an email of at least four complete sentences to Deb Walker the designated trainer: Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right time. Copy both to Mr, Dittmer and Ms. Hopkins Create an ...
*March 23, 2012*

**Types of BUsiness writing**

Memorandum part. Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've received confirmation from Jeremy Dittmer for the date, time, and materials needed. The trainer he has assigned is Deb Walker (e-mail: Deb.Walker@blah...
*March 23, 2012*

**Types of Business writing**

BUSINESS LETTER ASSIGNMENT Assigment: write a business letter according to the background. Background:Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human ...
*March 23, 2012*

**types of businesss writing**

I'll revise , thanks so much !
*March 22, 2012*

**types of businesss writing**

My third piece. Draft an email of at least four complete sentences to Deb Walker, the designated trainer: A. Confirm the arrangements for the seminar providing only the information she needs to arrive at the right place at the right time. B. copy both Mr. Dittmer and Ms. ...
*March 22, 2012*

**types of business writing**

I'm all over it now Thanks guys !!!!!!! :) repost tomorrow !
*March 22, 2012*

**types of business writing **

Memorandum part. Draft an interoffice memorandum to Miriam Hopkins, the Director of Human Resources: A. Assume that you've received confirmation from Jeremy Dittmer for the date, time, and materials needed. The trainer he has assigned is Deb Walker (e-mail: Deb.Walker@blah...
*March 22, 2012*

**Types of business writing**

In the book it says refreshments are provided that is why I wrote that. and I see how we is better than I but i don't get what word or comma is missing. Gonna post my memorandum as well for you to check out. And will correct what you said.
*March 22, 2012*

**Types of business writing**

Here is what I changed ...Working on my next one will post soon....... March 21, 2012 Jeremy Dittmer Employee Relations Specialist Wydade Consulting Services 1918 Church St. Burlington, VT 05672-0752 RE: Trainer request for hospital seminar Dear Mr. Dittmer: I am writing to ...
*March 22, 2012*

**Types Of Business Writing**

Thanks I'll repost after work sometime this afternoon . Thanks :)
*March 21, 2012*

**Types Of Business Writing**

Assigment: write a business letter according to the background. Background:Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, ...
*March 21, 2012*

**Improving your writing!**

Results are in ....I got a 92% :) thanks again !!! On to the next paper !
*February 5, 2012*

**Improving your writing**

Changed it to between and changed the 200 part...... Gonna submit it now and pray I get a good score. This one was tough ! :)
*February 3, 2012*

**Improving your writing**

Oops forgot about the 200 and is it between? :) hehe
*February 3, 2012*

**Improving your writing**

I hope I got it this time...Is the use of my semi colons and colon correct ? For the past three months there seems to be an ever-growing problem at our company of DMD Medical Supplies: The quality of work has been poor; the morale of various employees has been brought down; ...
*February 3, 2012*

**Improving your writing Revised**

For the past three months there seems to be an ever-growing problem at our company of DMD Medical Supplies: The quality of work has been poor; the morale of various employees has been brought down; and the workflow has been uneven amongst both teams and the executives. The ...
*February 2, 2012*

**Improving your writing**

Not sure how to fix the run on's considering I have to explain everything! Any tips ?
*February 2, 2012*

**Improving your writing**

REVISED, let me know what you think :) For the past three months there seems to be an ever-growing problem at our company of DMD Medical Supplies. The quality of work has been poor, the morale of various employees’ has been brought down and the workflow has been uneven ...
*February 2, 2012*

**Improving your writing**

Thanks I will revise it that is basically my rough draft before another rough draft :) I basically just typed and didn't care to think of anything else but a solution . I'm thankful u feel it's strong this assignment is making my head hurt ! Will repost in a couple...
*February 2, 2012*

**Improving your writing**

Please help!! Background: Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides ...
*February 2, 2012*

**IMPROVING YOUR WRITING**

Background: Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides secretarial support ...
*February 1, 2012*

**Improving your writing**

See that is sorta my thought on it too but I think that probably isn't an option. Before I even think of writing this one I'm gonna ask around for suggestions... That's what my book says is a good idea to do when your stuck and I must admit this one has me ...
*January 19, 2012*

**Improving your writing**

Here is the assignment: Ten years ago, you started working as a clerk for DMD Medical Supplies. Six months ago, Liz Jakowski, the human resources director, promoted you to office manager. You manage two employees: Jack Snyder and Ruth Disselkoen. Your office provides ...
*January 19, 2012*

**Special Thank you to Writeteacher**

Thanks to all your help and guidance I received a 93% on my exam :) Just wanted you to say Thank you!!! Will post new questions once I"m done writting my next module's paragraph ;)
*January 18, 2012*

**Writing Sentences and Paragraphs**

Then why do they always say two spaces after periods? In school in my younger years I was told 2 spaces after a comma and I could swear in my Penn foster administrative assistant writting book they said two after a period ! so confusing lol ! Thanks again for all you`ve done.
*January 12, 2012*

**Writing Sentences and Paragraphs**

Ok I worked real hard on this :) I hope I nailed it this time. My other question is : Is it one space after commas? Two spaces after a period ? and one space after an exclamation mark. Ok fingers crossed ! Anna, I am so happy you’ve moved back to Burlington from Bay view...
*January 12, 2012*

**Writing Paragraphs and sentences**

I will work on it tomorrow after work and I'll reread the website again ! Thanks :)
*January 10, 2012*

**Writing Paragraphs and sentences**

I don't understand the parallel problem at all if u could help with that, that would be great. I will work hard on this tomorrow .
*January 10, 2012*

**Writing Paragraphs and sentences**

Paragraph 2 good copy... Revised and corrected. Anna, I am so happy you’ve moved back to Burlington from Bay view, Ohio! Especially since there are many more job oppurtunities here considering it’s a bigger city. In fact just yesterday I was talking with my boss at ...
*January 10, 2012*