# Posts by aria

Total # Posts: 296

**Chemistry**

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

**Math**

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

**Math**

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

**Math**

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

**Math**

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

**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??

**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??

**World history**

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

**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..?

**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...

**technoligy**

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

**World history**

What did Machiavelli describe in his book called the prince?

**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...

**Math**

*how

**Math**

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

**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 ...

**Chemistry**

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

**Maths**

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

**Physical Education**

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

**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?

**Chemistry**

THE LIMIT DOES NOT EXIST!

**Algebra 2**

The answer is gotti.

**Calculus**

dfedrdftgvnh b

**Science**

I got 10/10 anyways :3

**Science**

Thanks

**Science**

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

**Science**

Cmon someone!!!!

**Science**

Someone?!

**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 ...

**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?

**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 ...

**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...

**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?

**Algebra**

rational

**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 ...

**Science**

same i go there too

**Calculus**

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

**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?

**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 ...

**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?

**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 ...

**Science Help!**

I think you are right.

**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.

**Math**

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

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

The outcome of what?

**Math**

Anytime

**Math**

Yep

**Math**

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

**math**

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

**MGMT**

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

**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.

**Math**

You're welcome, Amy

**Math**

Well, there is 4 trees in the park.

**Math**

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

**Math**

Yes

**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.

**Math**

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

**Math**

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

**Math**

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

**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?

**Science 8**

What about the third law?

**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.

**math**

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

**math**

Do you need help solving the problem?

**math**

-11 is your answer

**Calculus**

Oh wow, thank you so much!

**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 ...

**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 ...

**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 !

**Biology**

Positive feedback loops contribute to homeostasis.

**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 ...

**Science**

JJ is right! I got 4/4

**Statistics**

Never mind, figured it out :)

**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 ...

**Statistics**

Nevermind! I figured out what I did wrong!

**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

**math**

jdenikljgdlknfrik

**Science Work**

Yup I got 10/10 ! 10 is C

**Math**

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

**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...

**Chemistry**

100 mL of 1.0 M formic acid (HCOOH) is titrated with 1.0 M sodium hydroxide (NaOh). The Approximate pKa is 4 At the pKa, what fraction of the carboxyl group will have been converted to COO-?

**Chemistry**

Thank you very much!

**Chemistry**

Select the statements that correctly describe buffers.? 1) The pH of a buffer solution does not change significantly when any amount of a strong acid is added. 2) The Ka of a buffer does not change when any amount of an acid is added to the buffer solution. 3) The pH of a ...

**Chemistry**

Thank you so much, it makes a lot more sense now! :)

**Chemistry**

Using the reaction and the E∘ given below 2Co^3+(aq)+2Cl^−(aq)→2Co^2+(aq)+Cl2(g) E∘=0.46 V what is the cell potential at 25 ∘C if the concentration are [Co^3+]= 0.565M , [Co^2+]= 0.554M , and [Cl^−]= 0.838M and the pressure of Cl2 is PCl2= 8...

**7th Grade Social Studies**

Thank you Anonymous! I got them all right!

**math**

use the given zero to find the remaining zeros of the function: F9x)=x^3-5x^2+4x-20; zero:2i I don't get it. Can someone please show me what to do with this?

**Math**

Don't know what

**SCIENCE NEED HELP**

Jose buys a new moped. He travels 3 km south and then 4 km east. How far does he need to go to get back to where he started?

**Statistics**

The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal 2.19. Based on this, how many traffic accidents should be expected during a week long period? a. 15.33 b. 10.95 c. approximately 10.36 d. ...

**Statistics**

A sample of 50 values produced the following summary statistics: Q1 = 10, Q2 = 14.6, Q3 = 16.7 and x = 15.3. Based on this information, the left and right ends of the box in a box and whisker plot are, respectively, a. 10 and 14.6 b. 14.6 and 16.7 c. 10 and 16.7 d. 5.3 and 32....

**Physics**

A football was thrown from the line of scrimmage with a velocity of 30 m/s at an angle of 30o above the horizontal. (a) Determine the time required by the ball to reach the maximum height of its flight path. (b)Determine the distance from the line of scrimmage that a receiver ...

**Physics**

A 0.2 kg baseball located at the top of a building which is 100 m above the ground is thrown with an initial velocity 30 m/s at an angle of 30o above the horizontal. (a) Determine the total energy which the ball will have just after the instant that the ball is thrown. (b) ...

**Physics HELP PLZ :(**

A 2.0 kg mass is placed in front of a spring (K = 40 N/m) which has been compressed to its maximum of 20.0 cm. (a)If the spring is released, determine the velocity of the mass at the instant that the spring is only compressed 10.0 cm. (b) Determine the velocity of the mass ...

**Physics**

During a training exercise a cannon ball is fired with a muzzle velocity of 84.9 m/s at an angle of 45o above the horizontal. Determine how far from the cannon the ball will land when it hits the ground.

**Physics**

A 0.22 calibre rifle shoots a bullet of mass 1.8 g with a muzzle velocity of 500 m/s. If the barrel is 25 cm long, what is the average force exerted on the bullet while it is in the barrel?

**math**

Cohen has consistently averaged 120 yd. of horizontal distance with his 7-iron over the last two years playing golf. His ball flight typically reaches a maximum height of 24 yd. (Hint: A rough sketch will help you) a.) Create a function in vertex form that relates these ...

**Math**

Two consecutive integers are squared. The sum of these squares of these squares is 545. What are the integers?

**Math**

A bridge over a river is supported by an arch. The function that describes the arch us h(x) = -0.0274x^2 + 1.34033x, where h(x) is the height, in metres, of the arch above the water at any distance, x, in metres, from one end of the bridge. Could a sail boat with an 18m mast ...

**Calculus**

Thanks a lot, it makes so much more sense now! :)