# Posts by Tiff

Total # Posts: 101

**chemistry**

0.4276-g sample of a potassium hydroxide – lithium hydroxide mixture requires 31.20 mL of 0.3315 M HCl for its titration to the equivalence point. What is the mass percent lithium hydroxide in this mixture? 1.) 0.03120 L x 0.3315= 0.010343 moles HCl I'm not sure ...

*April 15, 2016*

**Maths**

Not sure if this is right but, x=1.4

*April 15, 2016*

**Calculus**

Which of the following integrals cannot be evaluated using a simple substitution? the integral of 1 divided by the quantity x squared plus 1, dx the integral of 1 divided by the quantity x squared plus 1, dx the integral of x divided by the quantity x squared plus 1, dx (MY ...

*March 15, 2016*

**Calculus**

If f(x) and g(x) are continuous on [a, b], which one of the following statements is true? ~the integral from a to b of the difference of f of x and g of x, dx equals the integral from a to b of f of x, dx minus the integral from a to b of g of x dx ~the integral from a to a of...

*March 15, 2016*

**Chemistry**

Anyone got a good explanation for this question.

*May 4, 2015*

**physics**

Figured it out. The answer is N = -122. F = ma In this case, acceleration is negative because it's in the opposite direction (being pushed to the right, but we want to know the effects on the red box which is to the left), therefore m • a = 14.5 • -8.38 = -121.5 N.

*November 2, 2014*

**physics**

In addition: To the nearest newton in problem 5 what force does the blue box exert on the red box? The first answer is a = 8.38 m/s^2 290 = (20.1 + 14.5)a Solve for a. Can't seem to figure out how to find the force on the red box.

*November 2, 2014*

**physics**

The red box has a mass of 20.1 kg and the blue box has a mass of 14.5 kg and the force is 290 N. To the nearest tenth of a m/s2 what is the acceleration of the combination? The diagram looks like this: F --> [Red Box][Blue Box] On a straight plane, not on an incline.

*November 2, 2014*

**algebra**

Thanks!!! I had it right:-)

*September 4, 2014*

**algebra**

joe counted a total of 40 whites and yellow cars. there are 9 times white cars as yellow cars. how many white cars did joe counted

*September 4, 2014*

**history**

Tariff Protection

*July 13, 2014*

**POL 201**

Q:An independent regulatory authority, like the Federal Reserve Board. A)is subject to legislative oversight. B)operates independently of both the President and Congress. C)takes orders from the President. D)engages in partisan politics Q:A clientelist is often appointed to be...

*May 20, 2014*

**chemistry**

The boiling point of another member of this homologous series was found to be 309 K \rm K. What is the likely molecular formula for this compound?

*April 28, 2014*

**Math (Number Theory)**

the following two lines indicate another way to derive the formula for the sum of the first n integers by rearranging the terms in the sum. Fill in the details. 1+2+3+...+n=(1+n)+(2+(n-1))+(3+(n-2))+... =(1+n)+(1+n)+(1+n)+...

*April 21, 2014*

**math**

Mary hits 60% of her free throw shots in yesterdays game. If Mary takes 7 free throw shots in yesterdays game, what is: A. The probability she scores 5 of those shots? B. The probability she scores none of the shots? C. Her average number of hits, or shots that go on? D. The ...

*October 28, 2013*

**Physics**

Actually, Henry is incorrect. The acceleration is NOT equal to 0. The acceleration is F1/m thus, the equation he wrote (160 - Fs = m • a) should have m • a = F1. Final equation: Ft - uF2 = F1 160 - u(461.2) = 494.54 u = .725

*September 16, 2013*

**Physics Lab**

Collision derivation problem. A car is released from rest on a frictionless inclined plane. Assume h/L is approximately equal to y/x. equations. If the car has a mass of 0.2 kg, the ratio of height to width of the ramp is 11/110, the initial displacement is 2.25 m, and the ...

*July 20, 2013*

**economics**

quantity total cost what's the marginal cost? 0 8 2 9 4 10 6 11 8 13 10 19 12 27 14 37

*March 15, 2013*

**ALG2! WORD PROBLEM!very important!!**

The first part is ax is less than or equal to 1200. You substitute a as 41.49. you will get 28.92263195950831525668835640636. The maximum number is 28 because if u purchase 29, you will go over the budget.

*November 30, 2012*

**math**

Its been awhile but here you go: (a)53320 31000*.06=1860 1860*12 (12 is 3 quarter per year for 4 years)=22320 31000+22320=53320 (b)34720 31000*.03= 930 930*4=3720 31000+3720=34720

*November 23, 2012*

**math help please**

I thought B.

*November 23, 2012*

**calculating & reporting healthcare statistics**

an employee currently earning $10.85 per hour has been awarded a 3.5 percent merit raise. What will the employee's hourly salary be with this increase?

*October 7, 2012*

**Math**

A catcher's and a pitcher's uniform numbers are consecutive integers whose product is 756. If the catcher's was the smaller number, determine the uniform number of each player.

*September 28, 2012*

**Math**

The length of the luff is four times longer than the length of the foot of the sail. Find the length of the foot and the length of the luff.

*September 28, 2012*

**Math**

Pool tables are rectangular, and their length is twice the width. Find the dimensions of a pool table if it occupies 162 ft2 of floor space

*September 28, 2012*

**english**

research plan, what does it mean - birth control why do you think this research question is appropriate for a research paper birth control

*September 18, 2012*

**pre-algebra**

if the scale is 3 in. = 50 mi. what is the actual distance if the line segment was 6 in.

*February 21, 2012*

**History**

Which of the following words best describes the climate of New Zealand..a) tropical b) temperate c)arid d)artic

*February 16, 2012*

**Probabilty & Statistic**

mean 100 standard deviation 20 population 1000

*January 23, 2012*

**physics**

A 16kg stone falls 40m. Find the stone's kinetic energy just before it strikes the ground.

*January 22, 2012*

**chemistry**

What is the concentration of a standard solution? - It was prepare to 250mL, it contained 9.7563g (O.lM) of (NH4) and 3mL of sulphuric acid.

*September 20, 2011*

**chemistry 101**

3.45 mol x 5 mol O/1 mol P2O5= 17.3 mol of Oxygen

*July 8, 2011*

**physics**

Suppose that you have a circle with a radius of 4.02 ± 0.39 m, what is the calculated uncertainty in the area?

*February 2, 2011*

**physics**

Suppose you have a circle with a radius of 6.43 ± 0.09 m, what is the average area of the circle?

*February 2, 2011*

**science**

Why doesn't the sand from california beaches' result in froth and bubbles when you pour vinegar on it?

*January 17, 2011*

**math**

If she made the last free throw, then her probability of making the next one is 0.9. On the other hand, If she missed the last free throw, then her probability of making the next one is 0.5. Find the long-run free-throw shooting probabilities for this player:

*December 6, 2010*

**math**

Please and this one 234,000,000 it scientific notation

*November 24, 2010*

**math**

Hello I need help with scientific notation please 0.00000586

*November 24, 2010*

**Calculus**

A rectangle is constructed with its base on the diameter of a semicircle with radius 5 cm and with two vertices on the semicircle. What are the dimensions of the rectangle with maximum area?

*November 7, 2010*

**math**

the system of linear equations below has a unique solution for all but one value of a: 6 x−12 y=−6 58 x+a y=−58 What is this exceptional value for a?

*October 26, 2010*

**math**

Assume that the business makes a profit with probability 0.3 in the first year. For each year thereafter, the business makes a profit with probability 0.7 if it made a profit in the previous year, and with probability 0.2 if it did not make a profit in the previous year. What ...

*October 4, 2010*

**statistics**

Assume that each bag contains 6 balls. Bag a contains 3 red and 3 white, while bag b contains 2 red, 2 white, and 2 blue. You randomly select one ball from bag a, note the color, and place the ball in bag b. You then select a ball from bag b at random and make note of its ...

*October 4, 2010*

**math**

-2(5+2)-3(3-4)-5

*October 1, 2010*

**statistics**

Assume that your sample space is S = {O1, O2, O3, O4, O5, O6 } with associated weights (probabilities) w1 = 0.15, w2 = 0.25, w3 = 0.10, w4 = 0.20, w5 = 0.15, and w6 = 0.15. Determine the probability of the following events: {O3 }∩{O5 }:

*September 29, 2010*

**math**

Assume that your sample space is S = {O1, O2, O3, O4, O5, O6 } with associated weights (probabilities) w1 = 0.15, w2 = 0.25, w3 = 0.10, w4 = 0.20, w5 = 0.15, and w6 = 0.15. Determine the probability of the following events: {O3 }∩{O5 }:

*September 29, 2010*

**5th grade**

Salt is sodium and chloride if the there was only chloride it would be different.

*September 27, 2010*

**5th grade**

Salt is sodium and chloride

*September 27, 2010*

**math**

THe perimeter of a rectangle is 166 inches. The length exceeds the width by 23 inches. Find the lenght and the width

*July 30, 2010*

**Pharmacy**

The instruction take medication with plenty of water is an example of

*June 7, 2010*

**HCR 230**

Write a 350- to 700-word response that familiarizes you with private payer plans and CDHP account types

*May 2, 2010*

**physics**

7.2, 16, and 29

*February 9, 2010*

**medical coding and billing**

i just don't know how to start the letter

*January 2, 2010*

**medical coding and billing**

thank you

*January 2, 2010*

**medical coding and billing**

i just strated school and one of the assignments is to file an appeal for a doctor stating that he wants more money then the insurance company paid him and i have no idea on how to even start this letter can some one help me please?

*January 2, 2010*

**english**

In emphasizing the importance of individual thinking and basing one's beliefs on one's own experiences, Sojourner shows she has much in common with

*November 11, 2009*

**finance**

Today, Mark invested $5,000 into an account that guarantees 7.50% p.a., compounded monthly and Madonna invested $5,000 into account guaranteeing 8.125% p.a., compounded quarterly. How long will it take (in years) for the value of Madonna's investment to be three times as ...

*October 25, 2009*

**finance**

Today, Mark invested $5,000 into an account that guarantees 7.50% p.a., compounded monthly and Madonna invested $5,000 into account guaranteeing 8.125% p.a., compounded quarterly. How long will it take (in years) for the value of Madonna's investment to be three times as ...

*October 23, 2009*

**finance**

You have decided to buy a car that costs $34,100. The dealer offers you a 5-year loan with monthly payments of $695 per month. What is the annual nominal interest rate on the loan?

*October 23, 2009*

**finance help**

You have decided to buy a car that costs $34,100. The dealer offers you a 5-year loan with monthly payments of $695 per month. What is the annual nominal interest rate on the loan?

*October 22, 2009*

**accounting help**

IN 2008, Variman, Incorportated had Gross Accounts receivable of $2,366,420 and management estimated the Allowance for Doubtful accounts to be $243,520. Compute the ratio of Allowance of Doubtful accounts to Net Accounts receivable for Variman, Inc. for 2008 (that is, compute ...

*September 3, 2009*

**integration**

sqrt2 times e^t times t^(1/2) dt bounded between 0 and 1. i tried integration by parts.. but it keeps repeating.. please help. thank you!

*August 27, 2009*

**Math**

Actually Reiny was right, it is 56 I just typed it in and it's correct

*August 23, 2009*

**Algebra**

It's been so long since I've donw combinations, and now I have a question about them in my algebra homework packet. Question is....Marcie has a collection of 9 DVDS. She will choose 4 of them to take in the car to watch during a long trip. How many combinations of 3 ...

*June 12, 2009*

**World history**

how did human life change when the ice age ended?

*May 21, 2009*

**Chem**

Could someone explain to me how to prepare (a) zinc chloride by an acid-base reaction and (b) by a gas formation reaction. If the starting materials available are ZnCO3, HCL, CL2, HNO3, NaCL, Zn(NO3)2, and Zn. Thanks so much for any info.

*December 2, 2008*

**medical coding and billing**

i just strated school and one of the assignments is to file an appeal for a doctor stating that he wants more money then the insurance company paid him and i have no idea on how to even start this letter can some one help me please?

*November 15, 2008*

**Bio**

describe the general body form of a fungus when growing and at time of sexual reproduction...

*October 15, 2008*

**math**

What do all these letters B,D,E,F,H,K,L,M,N,P,R have in common that none of the other in the english alphabet has?

*October 4, 2008*

**science**

What isthe missing word?The Heart has some ----- tissue in it.

*September 19, 2008*

**math**

A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is one less than triple the number of 3 cent stamps. The number of 15 cent stamps is six less than the number of 8 cent stamps. The total value of all the stamps is $2.47. Find the number of 8...

*September 7, 2008*

**college**

The annual rainfall in California’s north valley averages twenty-three inches. So the rainfall next year will be twenty-three inches

*September 2, 2008*

**Chemistry**

Hi GK, For the first step, isn't (1/10)(0.0020) = 0.00020 M? Also, I understand your very clear explanation to the last step: [SCN-] = 0.0010 -C I understand the minus C part, but how did you get 0.0010? Thank you!

*August 8, 2008*

**legal and ethical issues**

select a current or proposed law that impacts the delivery of human services what reliable resources are availiable to learn about the implications of this law? What is the purpose or rationale of the law? How will the law effect da-t-day operations within human service ...

*June 2, 2008*

**Microeconomics**

Indicate how you think each of the following would shift demand in the indicated market: a.Incomes of buyers in the market for Adirondack vacations increase. b.Buyers in the market for pizza read a study linking hamburgers consumptions to heart disease. c.Buyers in the market ...

*October 21, 2007*

**science reading scales**

how to you find the samllest division when reading a scale

*September 10, 2007*

**science**

do you know how to find the smallest division on a scale?

*September 10, 2007*

**math**

The amount of sales tax charged is proportional to the value of the item bought. If the tax on a $110.00 item is $8.50, what is the tax on a $150.00 item? It will be (150/110) x $8.50 150/110*8.50=11.59 $11.59 is your answer

*June 22, 2007*

**history**

What was Wilson’s slogan for entering World War I? Why was his slogan invalid at the time? What happened later in Russia, which provided how invalid was his slogan? http://www.google.com/search?hl=en&lr=&as_qdr=all&q=ww+i+%22Wilson%E2%80%99s+slogan+%22+Make+the+world+safe...

*May 11, 2007*

**history**

9. What three events proved that Theodore Roosevelt spoke softly but carried a big stick? Check this site. http://en.wikipedia.org/wiki/Big_stick_diplomacy

*May 11, 2007*

**religion**

i need to write an essay on mass as a sacrafice. i need help on sacrifice in natural religion, the Old Testament beckround to sacrafice, and the relationship of the mass to sacrafice and calvary PLEASE HELP! Since this is not my area of expertise, I searched Google under the ...

*May 7, 2007*

**religion**

2. What four actions besides stealing are forbidden by the seventh commandment? See my response below.

*May 7, 2007*

**Religion**

1. What three actions we are commanded to do by the seventh commandment? from http://www.vatican.va/archive/catechism/p3s2c2a7.htm "THE SEVENTH COMMANDMENT You shall not steal. The seventh commandment forbids unjustly taking or keeping the goods of one's neighbor and ...

*May 7, 2007*

**Visual Basic**

Notes in a program which explains what the program is doing are called ______ Comments?

*May 3, 2007*

**Visual Basic**

a routine that puts a series of strings or numbers in order is called a ________

*May 3, 2007*

**Visual Basic**

a routine that accepts one or more arguments and returns a single result is called a _______

*May 3, 2007*

**computer**

a routine that puts a series of strings or numbers in order is called a ________

*May 3, 2007*

**computer**

a routine that accepts one or more arguments and returns a single result is called a _______

*May 3, 2007*

**computer**

Notes in a program which explains what the program is doing are called ______

*May 3, 2007*

**Visual Basic**

If you wanted your program to respond to an event every 5 seconds, you would use the ________control. timer having problems getting the name from my txtName box to show up on my lblmessage box. I am working on a simple program that one types there name at the top, click on a ...

*May 3, 2007*

**earth science**

what is the most common sedimentary rock? Since this is not my area of expertise, I searched Google under the key words "sedimentary rock common" to get these possible sources: http://www.cartage.org.lb/en/themes/Sciences/Earthscience/Geology/RocksandMinerals/...

*April 4, 2007*

**earth science**

what class of minerals contains the element oxygen bonded to a metallic element http://en.wikipedia.org/wiki/Iron_oxide

*April 4, 2007*

**earth science**

24. emormous masses of ____ rock all over the world, such as the Columbia Plateau in the northwestern U.S., give evidence of some huge catastrophic action. granite mountainous sedimentary volcanic volcanic right? Yup.... absolutely

*April 4, 2007*

**earth science**

22. an illustration of the fact that a sudden and great _____ struck the earth is the millions fo mammoths and other large animals frozen instantly and preserved, whole and undamaged. catastrophe cold front ice age permafrost ice age right This also makes good sense.

*April 4, 2007*

**earth science**

21. Billions of fossils of plants, fishes, and land animals, many almost perfectly preserved, could not have been buried by natural _______ observable in the world today. DEATHS DISEASES EVELOUTION PROCESSES processes right? That makes good sense to me.

*April 4, 2007*

**AP U.S. History 1920's immigration**

i love stephanie forth!!

*February 21, 2007*

**AP U.S. History 1920's immigration**

this is whatever i mean come. immagrants; its the same legal or illegal...all they want is to be free. plus mexican guys are hawt

*February 21, 2007*

**College Essay**

I edited it from your suggestions is there anything else I could change or add? The smell of exhaust from multiple cars combined with dirt and dust fluttering in the air is my lasting impression of Canton, China. The vivid image frequently reminds me of where my origins came ...

*November 26, 2006*

**College Essay**

Are there any grammar errors or any other errors I should fix? And is there anything I should edit? Also are my paragraphs organized correctly? The smell of exhaust combined with dirt and dust fluttering in the air from multiple cars is my first encounter with Canton, China. ...

*November 26, 2006*

**Physics**

On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? 100N* cos30 -(100sin30+mg)(.1)= m*acceleration [86.6025- [(-50 + (100)(-9.8)](.1)]/100 [86.6025...

*August 24, 2006*

**Physics**

On a mass of 100 kg, a force of 120 N acts right and at an angle of 30 degrees to the horizontal. If the coefficient of sliding friction is .1 what is the acceleration of the mass? 100N* cos30 -(100sin30+mg)(.1)= m*acceleration does "m*acceleration mean the acceleration ...

*August 23, 2006*