Monday

July 28, 2014

July 28, 2014

Total # Posts: 304

**Math**

You have a wireless phone plan that costs $25 per month. You must also pay $.10 per minute for each minute over 500 min. you phone bill was more than $30 last month. Write an inequality to represent the number of minutes m you spent on the phone last month. Suppose you use 525...

**Math**

The Cupcake Cafe makes 4 1/2 times as much revenue on doughnuts as muffins. If the total sales was $44,000 for May, what dollar amount of each was sold?

**microeconomics**

The basis of the argument favoring government intervention to correct informational and rationality problems is that:

**trig**

A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 12 knots with heading 140°, and the second tugboat is traveling at a speed of 17 knots with heading 200°. Find the resulting speed and direction of the barge. (Round your answers to the nea...

**hastings**

In a heating curve, when is the temperature constant?

**Physics**

If the gas in a container absorbs 203 J of heat, has 100 J of work done on it, then does 59 J of work, what is the increase in the internal energy of the gas? Answer in units of J

**science**

Tiffany you posted this question a while back ago and it was for a job. I'm doing the same thing and I was just wondering if it was a scam BANK RECONCILIATION ============================================== On Aug 14th, One of our Partner's ( Compuville ) cash book show...

**Physics**

A rock dropped into a pond produces a wave that takes 14.6 s to reach the opposite shore,21.1 m away. The distance between consecutive crests of the wave is 5.3 m. What is the frequency of the wave?

**Physics**

Consider a force F = 815 N pulling 3 blocks of masses m1 = 7.94 kg, m2 = 15.3 kg, and m3 = 32.4 kg along a frictionless horizontal surface. Find the acceleration a of the blocks. Answer in units of m/s2.

**Geometry**

Find the value of each variable and ST if S is between R and T. Draw a picture and solve each. RS=12, ST=2x, RT=34

**Physics**

A pelican ﬂying along a horizontal path drops a ﬁsh from a height of 4.2 m. The ﬁsh travels 9.1 m horizontally before it hits the water below. What was the pelican’s initial speed? The acceleration of gravity is 9.81 m/s2.

**Literacy**

Which of the following ways of incorporating an idea from a journal article into your research paper is considered best for expressing that entire idea in your own words? A. quote B. Paraphrase C. Copy and paste D. Summarize

**Reimbursement Methodologies Final Exam**

Can anyone please help me with Part A with the 1st question: You're the new director of a hospital health information management department. The chief financial officer has hired you for your experties in health care reimbursement and needs to know how your department can ...

**English**

A more creative or straightforward expressions for The tried and true methods quite often can't be beat.

**business**

What are the advantages of having an ethics office or officer report to a company’s chief executive officer, the legal department, human resources, or audit? What are the disadvantages?

**Math**

Lisa can shovel snow from her driveway in 45 minutes. Bill can do the same job in 65 minutes. How long would it take Lisa and Bill to shovel the driveway if they worked together?

**Physical Science**

What is a nine letter word for the size of a measurement.. and the last letter of the word ends in "E".. Thanks, Priscilla

**physics**

What is the angular speed in rev/min of the Earth as it orbits around the sun? I'm confused with this problem. I know we have to convert from rad/s to rev/rad to s/min in order to get the units as rev/min. But I don't know what to use for rad/s

**Calculus I**

ok thank you

**Calculus I**

Find the derivative ** (sq root) y = (square root) x + (2nd sq root) x + (3rd sq root) x ** All the x's is under three sq roots y' = 1/2(sq rt) x + 1/(sq rt) x + 3/2(sq rt) x Is this right?

**chemistry - synthesis of aspirin**

wait, i misunderstand. You stated that if there's no H2O present then salicylic acid is the limiting reagent. Therefore salicylic acid number of moles is the same as the number of moles of acetic acid???? If this is so, then the mass of acetic acid would also be 2.005 g, r...

**chemistry - synthesis of aspirin**

ok therefore, the mass of the aspirin is equal to the mass of the acetic acid since the ratio is 1:1. Right?

**chemistry - synthesis of aspirin**

This is an experiment for a synthesis of aspirin lab mass of salicylic acid = 2.005 g mass of acetic acid = ? moles of acetic acid = ? volume of acetic anhydride = 4 ml mass of acetic anhydride (Use 1.08 g/ml for the liquid density) = (1.08 g/ml) (4 ml) = 4.32 g moles of aceti...

**Probability Distribution**

total amount of balls = 15 red + 19 white = 34 balls 0 - 0/34 = 0 1 - 1/34 2 - 2/34 = 1/17 3 - 3/34

**chemistry - synthesis of aspirin**

Okay i understand from what you said. But in my lab report, they stated the mass of acetic acid and from that I would have to calculate the number of moles of acetic acid. But since you state acetic acid is just a product should i leave these two questions blank then

**chemistry - synthesis of aspirin**

wanted to calculate the theoretical and actual yield of aspirin. mass of salicylic acid = 2.005 g But isn't salicylic acid differ. from acetic acid? If so, how do we find the mass of acetic acid in this experiment volume of acetic anhydride = 4 ml mass of acetic anhydride...

**chemistry - synthesis of aspirin**

wait, I just have one quick question. I realized the equation for this experiment would be C7H6O3 + C4H6O3 ----> C9H8O4 + C2H4O2 BUT... acetic acid's formula is C2H402 in molecular formula. Is the above equation right? Also, I realized after mixing salicylic acid and ac...

**chemistry - synthesis of aspirin**

ok thank you

**chemistry - synthesis of aspirin**

I wanted to calculate the theoretical and actual yield of aspirin. mass of salicylic acid = 2.005 g But isn't salicylic acid differ. from acetic acid? If so, how do we find the mass of acetic acid in this experiment volume of acetic anhydride = 4 ml mass of acetic anhydrid...

**Chemistry**

ok thank you very much

**Chemistry**

If its okay, can you show me in detail how to find n2^2 because I have done this three times and I'm still a little confused by this.

**Chemistry**

Okay, I was solving out this this equation for n2^2 n2^2 = 1(1/n - E/Rh) Is this right?

**Chemistry**

Calculate the level from which the electron fell, n2, for the hydrogen line you observed. wavelength (lambda) = 400 nm n1 = 2 RH = 2.18 x 10^-18 I keep having trouble with finding n2. Is the above given right to plug in for 1/(lambda) = RH (1/n1^2 - n2^2) thank you for any help

**Intermediate Algebra**

i = -1 () = sq. root i (24) i(4) + i(6) 2i(6)

**Calculus I**

thank you very much

**Calculus I**

Find the derivative of f(x) = sin^2 (e^sin^2 x) I wonder if I'm right F'(x) = 2cos(e^sin^2 x) (sin^2 x e^sin^2 x -1)

**Grade 11 math**

2. If there's no vertical asympotote, then y = 3x^2 + 5 / x^2 This way, for the denominator it shows there is no vertical asymptote. But when you plug in x = 0 for the numerator it equals 5 as the y-intercept. And since the numerator and denominator both have X^2 then this...

**Grade 11 math**

1. - Reflection in the y - axis, since - f(x) - Left 2 units - Taken to the power of -2 (i forgot what they called this, i think you should look up this) 2. Is there any vertical asymptote that you have to include in this function

**Physics**

Two blocks are connected by a string, The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.7kg. The mass of the hanging block is m=3.2kg. Find the direction and magnitude of the hanging blocks acceleration? ...

**science**

its lithosphere

**Chemistry**

ok, thank you very much for your time and patience. I understand, im sorry if I bothered you too much. But thanks a lot.

**Chemistry**

Wait, im not making sense. I know liters x normality gives you the equivalents of an acid. But are you sure it's not the grams I obtained divided by the equivalents of the acid.

**Chemistry**

wait, liters x normality = grams because I wanted to find the equivalent wt

**Chemistry**

I wanted to calculate the average equivalent weight of an unknown acid for an acid-base titration experiment. The mass of the unknown that I had to obtain is 0.2 g and the equivalents of the acid is .001046 L x N. But is this equation right? Does the equivalent mass equal to t...

**Chemistry**

No, I understand. Thank you very much

**Chemistry**

I wanted to calculate the normality of the acid and base solutions for a lab. But I'm extremely confused. I know normality is number of equivalents divided by volume in liters. But are we suppose to be given the number of equivalents of HCl and NaOH? Or are we suppose to f...

**Physics**

The mass of the thread was neglected in the experiment. If this mass were 0.2 gram, estimate the largest error in the acceleration that it might have caused. Could this account for your observed errors?

**Physics**

I think track B would reach the track first since track A has a dip in the middle.

**Physics**

The speed of sound is about 340 m/s. Assume that when the motion detector emits an ultrasonic pulse, it must detect the reflected pulse before it can emit its next pulse. Assuming that the length of the air track is about 2 meters, what is the maximum number of pulses per seco...

**Physics**

ok thank you

**Physics**

In a game of basketball, a forward makes a bounce pass to the center. The ball is thrown with an initial speed of 4.3 m/s at an angle of 15 degrees below the horizontal. It is released 0.80m above the floor. What horizontal distance does the ball cover before bouncing? (delta)...

**Physics**

Thank you very much.

**Physics**

1. While riding on an elevator descending with a constant speed of 1.5 m/s, you accidentally drop a book form under your arm. (a) How long does it take for the book to reach the elevator floor, 1.2 m below your arm? (b) What is your book's speed relative to you when it hit...

**math**

the probability that jim will make 0,1,2,3,4,5 or 6 shots out of six attempted field goals is shown below. what is the probability he will make 5 shots? r= 0,1,2,3,4,5,6 P(r)=.016, .094, .234, .312, .234, .094, .016 possible answers: .094, .312, .234

**3rd grade math**

What. Is a earth model

**Math**

K. =9 3.3 And 2.3= n 4.1

**chemistry**

What is the molarity of OH- in an aqueous solution that is 0.31 M HNO3?

**history**

its B. Irish and Protestant

**physics**

the image you see in a plane mirror appears to be at what distance?

**physical science**

all of the following are true about water except that it:

**Chemictry**

A calorimeter contains 32.0 of water at 11.5. When 1.70 of (a substance with a molar mass of 74.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 26.5. Calculate the enthalpy change, , for this reaction per mole of . Assume that the s...

**social science**

compare the believe systems of the khoikhoi with the early african farmers focus on the moon, singing and dancing, musical instruments and story telling

**Literacy**

Which of the following companies publishes Pediatric Nursing? A. Jannetti Publications, Inc. B. Royal College of Nursing Publishing C. Elsevier Science Publishers D. Advanstar Communication, Inc

**Physics**

What is the path of satellite called?

**Physics**

What is the path of satellite called?

**college algebra**

a Puzzle piece in the shape of a triangle has perimeter 30cm. Two sides of the triangle are each twice as long as the shortest side. Find the length of the shortest side

**college algebra**

The perimeter of a rectangle is 294cm. The width id 57cm Find the length

**calculus**

How do I integrate [1/(x^2+1)] Thx

**Physics**

2.545

**text structure**

c or a.

**text structure**

People have used various methods to measure the depth of the ocean. Long ago sailors lowered a rope over the side of the ship. When the rope touched the bottom,they knew how deep the water was. Today scientists measure the depth of the water with an echo sounder. It bounces s...

**English**

you already answered it.

**math**

i do not know

**pre-cal**

Can someone help me? I'm just really stuck on this question

**pre-cal**

Solve (x+2)/(x+1) -2 < 0 I know the LCD is x + 1. (x+2-2x-2)/(x+1) < 0 (-x )/(x+1) < 0 But somehow, I got the wrong answer. The answer is (4, 7]. But I don't know where I went wrong.

**5th **

hi an array is dots 3*9=27 so put 27 dots i hope this helps bye :D

**5th **

hi an array is dots 3*9=27 so put 27 dots i hope this helps bye :D

**AP US history**

Describe various levels of development and complexity in Native American Cultures around 1500

**12th grade**

3x+3=3 3x=0 x=0

**English (Writeacher/Ms Sue/bobpursley plz help)**

Thank You so much! :-)

**English (Writeacher/Ms Sue/bobpursley plz help)**

May someone who has read/watched both romeo and juliet and west side story help me check the following questions please? 1.Which situation is a similarity between Juliet and Maria, the main female characters in Romeo and Juliet and West Side Story? A. A relative was killed by ...

**English (Writeacher, Please help)**

Thanks so much!

**English (Writeacher, Please help)**

I would like someone to check the following questions for me. Thanks in advance. 1. What issue was a problem for Tony in West Side Story? A. Maria did not return his love B. His job was not a good one C. His parents did not approve of the friends he hung out with D. He could n...

**al**

i mean -8 -7 _ X 7 4

**al**

-8 -7 __ x ___ 7 4 the 7 cancels out, and it left with -8/-4 = 2

**English (West Side Story)**

Thanks Sra for the links, but I still want someone to check this for me cuz I wanna make sure they're right =P

**English (West Side Story)**

I would like someone to check the following questions for me. Thanks in advance. 1. What issue was a problem for Tony in West Side Story? A. Maria did not return his love B. His job was not a good one C. His parents did not approve of the friends he hung out with D. He could n...

**math**

Right! It would be sqrt18/sqrt50 sqrt18=3sqrt2 and sqrt50=5sqrt2 the sqrt2 cancels out, so yes, the answer is 3/5. Good Job!

**English**

Okay, Thanks again! : )

**English (Please read, Ms. Sue)**

I still think it's A... Ms. Sue, could you please tell me why you think choice A is not a theme of the West Side Story? No offence. Just want to know your opinion on that. Thank you so much : )

**English**

What is the theme of West Side Story? A. The prejudice is evil. B. All is fair in love and war C. Any friends you have are okay D. Get revenge for everything E. None of the above I think C and D are just wrong and B is not true at all. I would say it's A as it was the prej...

**english**

Have any of you read or watch the movie of West Side Story? If so, please help me with the question below, Thanks in advance. What characteristic best described Tony? A. intellectual B. idealist C. stupid D. angry E. None of the above I would say it's either B or C. Since ...

**Algebra**

On a standardized test, the distribution of scores is normal, the mean of the scores is 75, and the standard deviation is 5.8. If a student scored 83, the student's score ranks 1. below the 75th percentile 2. above the 97th percentile 3. between the 75th percentile and the...

**chem**

what are the bond angles and extraction and purification of cinnamaldehyde

**Life orientation**

U need to choose one of the topics then answer the questions numbered a-c.

**Physics**

A vibrating 1000-hertz tuning fork produces sound waves that travel at 340 meters per second in air. Points A and B are some distance from the tuning fork. Point P is 20. meters from the tuning fork. 1. If the waves are in phase at point A and B, what is the minimum distance s...

**help ms.sue**

whats one opinion about leukemia.i all ready wrote a fact but i baerly know anything about it so i can not write a opinion please.this is just home work ? please help me ms.sue from, priscilla perez

**help ms.sue**

i need a rymeing chart