Wednesday

September 28, 2016
Total # Posts: 214

**Physics**

A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? how long after it is fired will the target be hit?

*September 24, 2016*

**Chemistry **

The efficacy of certain drugs is affected by pH. Many drugs are absorbed into the blood through cells lining the stomach or the small intestine by direct diffusion across the plasma membrane. Since the interior of the plasma membrane is hydrophobic, uncharged molecules cross ...

*September 23, 2016*

**chemistry **

Bicine is an amino acid, but not a building block of proteins. Rather, it is a reagent commonly used in the biochemistry laboratory. Bicine contains two ionizable groups: tertiary amine (pKa 8.3) and carboxyl (pKa 2.3) a. For each of the ionizable groups in bicine, draw its HA...

*September 23, 2016*

**chemistry **

You discovered a new diprotic acid, which you have named edmontonic acid. You want to characterize the pKa’s of edmontonic acid, so you perform a titration experiment. Your data are summarized in the table below. Your titration sample contains 150 mmol of edmontonic acid...

*September 23, 2016*

**chemistry **

In a titration of malic acid, what is the pH after: a. 0.75 molar equivalents of NaOH have been added? 1 b. 1.30 molar equivalents of NaOH have been added?

*September 23, 2016*

**History**

I'm pretty sure it's C, the appeal for preservation of democracy.

*September 12, 2016*

**World history **

What were the effects of Islam on the different culture of ancient African empires ?

*June 8, 2016*

**World history **

What were the effects of cultural diffusion on ancient Africa empires ? Is it because the three main kingdoms maintained vast trading networks across Sahara desert and into the the Middle East and North Africa

*June 8, 2016*

**Calculus**

when i plugged in ∫[1,4] π(25-(5-1/x)^2) dx into the calculator i got 41.196 but when i plugged in π(10log(4)-3/4) i got 16.558 which one is the right answer?

*May 27, 2016*

**Calculus**

for b, yes, everything is the same but instead of rotating around the x-axis, it is being rotated around the line y = 5

*May 27, 2016*

**Calculus**

Volume created when the area bounded by the curve y = 1/x, the x-axis, and the lines x = 1 and x = 4 is rotated about: a) the x-axis: 2.356 units^3 Is this correct? b) the line y = 5 I'm not sure how to do this one.

*May 27, 2016*

**Social Studies **

What did Frederick Douglass, and Andrew Jackson say about their hopes for the future of the United States? How did they each work to help change the United States? How did they each react to key events happening in the United States? Were there any key events in each person&#...

*May 16, 2016*

**Social Studies **

Which of the plans is best for the nation? In what ways is the plan best for African Americans? In what ways is the plan best for former Confederates? In what ways is the plan best for the nation’s future? Explain why the other two plans would not work.

*May 16, 2016*

**Social Studies/History**

Reed, I have tried that, but I can only fin some of the information that I need. Here is what I have left to answer: What did they say about their hopes for the future of the United States? How did they work to help change the United States? How did they react to key events ...

*May 16, 2016*

**Social Studies/History **

Can someone please help me(without giving me the answers) with some research. Each question asks about to people, but I have to answer for each person separately. The two people are Frederick Douglass, and Andrew Jackson. After all of that is done it still has to be turned ...

*May 16, 2016*

**Social Studies **

Evaluate the effectiveness of Nixon's solution to the promise he made(to find a way to stop the Vietnam war, pledging america would have peace with honor.). was it successful? how do you determine this?

*May 12, 2016*

**history**

Thank you so much Ms. Sue!

*May 12, 2016*

**history**

His solution to the promise he made, which is: to find a way to stop the vietnam war, pledging america would have peace with honor.

*May 12, 2016*

**history**

Evaluate the effectiveness of nixon's solution. was it successful? how do you determine this?

*May 12, 2016*

**Chemistry**

Consider the generic reaction between reactants A and B: 3A+4B→2C How many moles of B will be in the reaction vessel once the reactants have reacted as much as possible? (Assume 100% actual yield.)

*April 29, 2016*

**Math **

What angle in the first quadrant could you reference to help you find sine and cosine of each of the following angles ? 330 120 113 203

*April 12, 2016*

**Chemistry**

The rock in a particular iron ore deposit contains 84 % Fe2O3 by mass. How many kilograms of the rock must be processed to obtain 1100 kg of iron?

*March 31, 2016*

**Chemistry**

A sample of propane, C3H8, contains 10.0 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carbon and hydrogen numerically.

*March 30, 2016*

**Chemistry**

Mole calculations: How much does 2.5 x 10^24 molecules of p2o3 weigh ?

*March 3, 2016*

**Math **

Solve: 0=x/30-0.01y+0.07

*February 23, 2016*

**Math **

Add or subtract rational expressions. 16x-12/4x^2+5x-6-3/x+2

*February 9, 2016*

**Math **

Solve the equations below. Check your solutions. 3x-5/2=4x+1/4

*February 1, 2016*

**Math **

Solve the equations below. Check your solutions. 8/k=14/k+3

*February 1, 2016*

**World history**

How did Ghana, Mali, and Songhai get so advanced? The main export was gold, which made each kingdom wealthy and strong, and provided them with the conditions necessary for cultural and intellectual achievement. Is this the answer??

*December 17, 2015*

**World history**

The main export was gold, which made each kingdom wealthy and strong, and provided them with the conditions necessary for cultural and intellectual achievement. Is this the answer??

*December 17, 2015*

**World history**

How did Ghana, Mali, and Songhai get so advanced ?

*December 17, 2015*

**computer **

The field names in a database are also known as A. category or column heading ** B. The name of a row C. Individual cells in a database D. Records Am I right..?

*December 1, 2015*

**Science plz help **

Describe how community residents and authorities can prepare for an earthquake and its aftermath. Review earthquake advice from the USGS, the American Red Cross, and other agencies. If you live in an area that is susceptible to earthquakes, include suggestions specific to your...

*November 30, 2015*

**technoligy**

I knew the answer was Sum thought I was wrong. Got an F on it

*November 22, 2015*

**World history **

What did Machiavelli describe in his book called the prince?

*November 9, 2015*

**Science help**

The length of a football field is 100 yards. When you compare geologic time (4.6 billion years) to the length of a football field, you will find that each yard on the field will equal 46 million years, and each 10-yard section will equal 460 million years. Use this information...

*November 4, 2015*

**Math**

*how

*October 29, 2015*

**Math**

3d-10=5 (d-4) i don't understand hoe to solve the problem... plz help

*October 29, 2015*

**Algebra 2 **

The cows at the evaleen dairy produce enough milk to fill a 4800 gallon tanker truck each day. The milk is then hauled to processing plant where it is put into smaller storage containers and then used to fill gallon jugs that are delivered to local stores. The storage ...

*October 25, 2015*

**Chemistry **

Ion flame test Why is it important to not let the wooden splint burn ?

*October 25, 2015*

**Maths**

how would you solve for 't' with this equation? 10=-2^(-t+2.5)+10

*October 19, 2015*

**Physical Education**

#7 is the only one that is wrong. It should be a) forward The rest are good! :)

*October 19, 2015*

**Math**

Allen has a piece of rope that is 84 inches long. He cuts off one piece that is 43 3/4 inches long and another piece that is 31 5/8 inches long. What is the total length of the remaining piece of rope after the two cuts are made?

*October 13, 2015*

**Chemistry**

THE LIMIT DOES NOT EXIST!

*October 13, 2015*

**Algebra 2**

The answer is gotti.

*October 13, 2015*

**Calculus**

dfedrdftgvnh b

*October 13, 2015*

**Science**

I got 10/10 anyways :3

*October 8, 2015*

**Science**

Thanks

*October 8, 2015*

**Science**

But I need the answers and help =( I don’t wanna fail

*October 8, 2015*

**Science**

Cmon someone!!!!

*October 8, 2015*

**Science**

Someone?!

*October 8, 2015*

**Science**

1. Which of the following traits is acquired? A. The number of petals that grow in a plants flower B. the wing shape of a wild bird C. The ability of some gorillas to learn sign language** D. A cheeta’s ability to run faster than any other land animal 2. The height of a ...

*October 8, 2015*

**6 grade math**

Erin buys a bag of peanuts that weighs of 3/4 of a pound. Later that week, the bag is 2/3 full. How much does the bag of peanuts weigh now?

*August 27, 2015*

**Science help**

and a sob is an arrogant person who commonly looks down on people who are lower than them who beg for help and such so arent you basically being a snob towards someone just because they ask for help and do not understand some things and just want the answer? So how is someone ...

*April 24, 2015*

**Science help**

i stumbled upon more of a cat fight rather than a question. Doesnt make sense how someone is an immature snob if they came for answers when everyone here does that. Calling someone an idiot just makes you look more immature than the rest. Why is there always that one hypocrite...

*April 24, 2015*

**Math**

A new fence is constructed on three sides of a housing block with area 240 m2. The fourth side facing the road is left open. If 52 m of fencing is used, what are the dimensions of the block?

*March 29, 2015*

**Algebra**

rational

*March 26, 2015*

**Math**

An open-topped box is constructed from a piece of cardboard with a length 2 cm longer than its width. A 6 cm square is cut from each corner and the flaps turned up from the sides of the box. If the volume of the box is 4050 cm3 , find the dimensions of the original piece of ...

*March 24, 2015*

**Science**

same i go there too

*February 16, 2015*

**Calculus**

Thank you. :) I was wondering, did you break up the fractions and then integrate it?

*February 9, 2015*

**Calculus**

Can someone show me a step by step process, along with explanations on how to do this problem? Thank you. :) Evaluate the integral ∫ [(x^2 - 1)/(x^2 + 1)]dx?

*February 9, 2015*

**Physics**

I don't really know where to start on the problem. Would I use V = k(q/r)? But what would I do afterwards. Much explanation on how to go about the problem is much appreciated. Thank you. 1) Three point charges are arranged at the corner of a square of side l. What is the ...

*February 8, 2015*

**Calculus**

Thank you so much. Although for problem number 1, I realized that I inputted it incorrectly (having problems with my + key). It is actually: 75/(1+6e^0.2x) = 30 Would I still solve it the same way but subtract 1 to the other side?

*January 31, 2015*

**Calculus**

Hello, I really need help on these two homework problem. >< In problem #1, I believe it is related to the exponential functions and their derivatives section...in Calculus II? So, surely there should be a ln in the solution as well? I would like a step by step process ...

*January 31, 2015*

**Science Help!**

I think you are right.

*November 12, 2014*

**PLEASE HELP ASAP Language Arts**

Us tutors won't do your work for you. We are happy to check your answers but we won't give you the answer.

*November 10, 2014*

**Math**

I think she would have 12 choices because: She has four colors: 4 She can choose three: 3 4 * 3 = 12

*November 5, 2014*

**data analysis w/spreadsh w/lab**

The outcome of what?

*November 4, 2014*

**Math**

Anytime

*November 4, 2014*

**Math**

Yep

*November 4, 2014*

**Math**

So, you have to do the same thing like in th last question. 20 * .10 =??

*November 4, 2014*

**math**

I am not completely sure, Laura but I think the answer would be feet.

*November 4, 2014*

**MGMT**

Yeah, Ms. Sue is right. You definitely need to include those factors into it

*November 4, 2014*

**MGMT**

Well, if you set a good example, or if you aren't rude to any of the worker, they will respect you better. Their is a higher chance of the workers treating the manager with respect if the manager is kind and hard working like all the other workers.

*November 4, 2014*

**Math**

You're welcome, Amy

*November 4, 2014*

**Math**

Well, there is 4 trees in the park.

*November 4, 2014*

**Math**

This is how I wold solve this: 9 * .45 = ? Use a calculator or something to figure it out. Hope I helped. :)

*November 4, 2014*

**Math**

Yes

*November 4, 2014*

**Math**

The equation would be 16/12 because there are twelve boxes and all of them added up together would be 16. So you would write your equation like this: 16/12 = 1.33... and so on.

*November 4, 2014*

**Math**

Okay. I got it. I know how to do this question now.

*November 4, 2014*

**Math**

Oh, wait. I'm sorry. Hold on. I got this wrong. I hope you aren't mad. Let me re read the question.

*November 4, 2014*

**Math**

Okay, good. So you have $1.92 per box So your equation that you would put down would be...?

*November 4, 2014*

**Math**

Okay, so you have twelve boxes of pencils. Lets say this: $ was one box of pencils Well, you have twelve so... $ $ $ $ $ $ $ $ $ $ $ $ each of those boxes cost 16 bucks. So what is 16 * 12?

*November 4, 2014*

**Science 8**

What about the third law?

*October 8, 2014*

**Science 8 **

How are Newton’s second and third laws of motion important to your everyday life? Please help me! I've looked everywhere and I can't seem to find an answer.

*October 8, 2014*

**math**

If you had $3.00, but you used $4.00 how much would you have left?

*October 8, 2014*

**math**

Do you need help solving the problem?

*October 8, 2014*

**math**

-11 is your answer

*October 8, 2014*

**Calculus**

Oh wow, thank you so much!

*May 27, 2014*

**Calculus**

Find all values for c in the intercal (1,4) so that the slope of the tangent line at (c,f(c)) equals the slope of the secant line through (1,1/3) and (4,2/3) where f(x) = x/(x+2) 1 </ x </ 4 (<-- that is suppose to be the less than or equal to sign) I'm not sure ...

*May 27, 2014*

**chemisrty**

A solid acid is dissolved in enough water to make 200 ml of a solution. 40.0ml of the solution is titrated to a phenolphthalein en point with an NaOH solution. The neutralized solution and the remainder of the acid solution are then mixed and the PH of the resulting solution ...

*April 16, 2014*

**chemistry**

Propionic acid has a ka of 1.3x10^(-5), 50.0ml of a buffer solution having a pH of 4.65 is to be prepared using a 0.20 M solutions of propionic acid and sodium propionate. How many ml of each of these solutions must be mixed? Thanks in Advanced !

*April 16, 2014*

**Biology**

How does diving bradycardia reflex help explain why we can survive after falling into cold water and being submerged for long periods of time? Give a physiological reason that explains the relationship between lung size and body size. From a physiological perspective, why is ...

*March 24, 2014*

**Statistics**

Never mind, figured it out :)

*February 28, 2014*

**Statistics**

Two of the biggest soft drink rivals, Pepsi and Coke, are very concerned about their market shares. The pie chart that follows claims that PepsiCo's share of the beverage market is 25%. Assume that this proportion will be close to the probability that a person selected at ...

*February 28, 2014*

**Statistics**

Nevermind! I figured out what I did wrong!

*February 27, 2014*

**Statistics **

Let X be a binomial random variable with n = 100 and p = 0.2. Find approximations to these probabilities. (Round your answers to four decimal places.) P(17 < X < 28) I get the answer as 0.7059 but it is wrong. I can't seem to figure this out... Help please

*February 27, 2014*

**Science Work**

Yup I got 10/10 ! 10 is C

*December 16, 2013*

**Math**

Is -4+2y=-2 a direct variation, and if it is what is the constant?

*December 2, 2013*

**Biochemistry **

1. What is the overall charge of the tripeptide below pH 1.0? 2. What is the overall charge of the tripeptide at pH 12? 3. What type of intermolecular attractions could the side chains of the amino acids make with the solvent (water) at pH 7.4? (Note that these are attractions...

*October 5, 2013*