Friday

May 22, 2015

May 22, 2015

**algebra**

The loudest sound measured one night during a hockey game was 112 dB. The loudest sound measured during a hockey game the next night was 118 dB. What fraction of sound intensity of the second game was the sound intensity of the first game?
*Friday, May 22, 2015 at 12:12am*

**Social Studies PLZZ Thanks **

A person’s ethnicity is his or her socioeconomic group. retirement goals. national or cultural heritage. religious affiliation.* 2. What state did Texas pass in 1994 to become the second most populous state in the country? California New York* Florida Pennsylvania 3. The ...
*Thursday, May 21, 2015 at 9:15pm*

**Math: related rates**

A street light is at the top of a 26 ft pole. A 5 ft tall girl walks along a straight path away from the pole with a speed of 7 ft/sec. At what rate is the tip of her shadow moving away from the light (ie. away from the top of the pole) when the girl is 23 ft away from the ...
*Thursday, May 21, 2015 at 5:59pm*

**History **

Last question haha Steve Jobs created competition in the industry of technology in the late 1970s by his creation of the first personal computer. true or false is it true?
*Thursday, May 21, 2015 at 3:22pm*

**periodic functions**

At time 4 minutes your submarine is at its deepest, y= -1000m. At time 9 minutes you are at your shallowest, y= -200. Sketch the graph. Write the equation. Your sub is designed to cruise below y= -300 meters. At time zero was your submarine at its cruising depth? Between what ...
*Thursday, May 21, 2015 at 12:00pm*

**Finance, Math**

You take a short position in one European put option contract, with strike price 100 and maturity six months, on a stock that is trading at 100. The annual volatility of the stock is constant and equal to 25%. The dividend rate is zero. The annual (continuously compounded) ...
*Thursday, May 21, 2015 at 10:18am*

**calculus **

Peter the punter decided to place $10,000 into a high growth share portfolio. After 3 weeks his investment was looking rather sad, with the value of his portfolio falling $2,025. Unperturbed, Peter stuck with his original plan to hold the stock for at least 6 months. But after...
*Thursday, May 21, 2015 at 6:24am*

**Prob and Stats**

For questions 1- 5 use confidence intervals to test the hypothesis. 1) A light bulb producing company states that its lights will last an average of 1200 hours with a standard deviation of 200 hours. A sample of 100 light bulbs from the company were tested and the researcher ...
*Thursday, May 21, 2015 at 12:49am*

**physics**

solid gold statue with mass of 7.55kg, weight of 74.0N, and disperses 680 cubic meters of water when immersed. i need to find the density. but im unsure how to find the volume first to put it into the formula?
*Thursday, May 21, 2015 at 12:38am*

**Calculus and quadratic equations**

Peter the punter decided to place $10,000 into a high growth share portfolio. After 3 weeks his investment was looking rather sad, with the value of his portfolio falling $2,025. Unperturbed, Peter stuck with his original plan to hold the stock for at least 6 months. But after...
*Wednesday, May 20, 2015 at 11:50pm*

**college chemistry**

predict the order of reduction and which of the following ions will reduce first at the cathode of an electrolytic cell: Ag^(+), Zn^(+2), IO3^(-)?
*Wednesday, May 20, 2015 at 9:48pm*

**History Help Thanks **

1. One reason Texans elected William Clements governor in 1978 was his political experience. lack of political experience.* support for urban dwellers. association with the Democrats. 2. Workers in maquiladoras receive low wages.* receive high wages. are generally middle...
*Wednesday, May 20, 2015 at 9:40pm*

**Managerial Economics**

Suppose your company is considering three health insurance policies. The first policy requires no tests and covers all preexisting illnesses. The second policy requires that all covered employees test negative for the HIV virus. The third policy does not cover HIV- or AIDS-...
*Wednesday, May 20, 2015 at 5:44pm*

** Strategies for the independent learner**

1.When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 7.You might want to review as you exercise because A...
*Wednesday, May 20, 2015 at 4:33pm*

**Algebra 2**

Orlando is making a design for a logo. He begins with a square measuring 20 inches on each side. The second square has a side length of 16 inches, and the third square has a side length of 12.8 inches. Which square will be the first square with a side length of less than 8 ...
*Wednesday, May 20, 2015 at 3:33pm*

**Strategies for the independent learner**

1.When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 2.The proctored exams for your degree courses are A. ...
*Wednesday, May 20, 2015 at 2:33pm*

**L A/The Giver**

Downward, downward, faster and faster. Suddenly he was aware with certainty and joy that below, ahead, they were waiting for him: and that they were wailing too, for the baby. For the first time, he heard something that he knew was music. He heard people singing. Behind him, ...
*Wednesday, May 20, 2015 at 2:21pm*

**math**

Ten participants are randomly selected from a population of patients with history of heart disease to be tracked in a health study. The study begins with an initial assessment of health status. The participants are instructed to return for a follow up visit one year after the ...
*Wednesday, May 20, 2015 at 3:52am*

**chemistry**

A solution contains 2.0 × 10^–3 M Ba^2+ and 1.0 × 10^–2 M Sc^3+. A source of F^– is slowly added to the solution. Will BaF2 (Ksp = 1.84 × 10^–7) or ScF3 (Ksp = 5.81 × 10^–24) precipitate first? I believe that ScF3 would ...
*Tuesday, May 19, 2015 at 9:19pm*

**caley**

A solution contains 2.0 × 10^–3 M Ba^2+ and 1.0 × 10^–2 M Sc^3+. A source of F^– is slowly added to the solution. Will BaF2 (Ksp = 1.84 × 10^–7) or ScF3 (Ksp = 5.81 × 10^–24) precipitate first? I believe that ScF3 would ...
*Tuesday, May 19, 2015 at 8:57pm*

**Probability**

A fair coin is tossed repeatedly and independently. We want to determine the expected number of tosses until we first observe Tails immediately preceded by Heads. To do so, we define a Markov chain with four states, {S,H,T,HT}, where S is a starting state, H indicates Heads ...
*Tuesday, May 19, 2015 at 7:27pm*

**Science (Chemistry)**

Hello DrBob222 Regarding the answer you gave me thank you very much. However when you expand the denominator, I don't get -0.14 but I get -0.28. I get that because when I first expand I get 0.0049 - 0.14x - 0.14x + 4x^2. So when I simplify that I get -0.28x. So could you ...
*Tuesday, May 19, 2015 at 4:35pm*

**probability self study**

each of three identical jewelry boxes has two drawers. in each drawer of the first box there is a gold watch. in each drawer of the second box there is a silver watch. in one drawer of the third box there is a gold watch while in the other there is a silver watch. if we select...
*Tuesday, May 19, 2015 at 2:29pm*

**mathematicalmodel**

You take a short position in one European put option contract, with strike price 100 and maturity six months, on a stock that is trading at 100. The annual volatility of the stock is constant and equal to 25%. The dividend rate is zero. The annual (continuously compounded) ...
*Tuesday, May 19, 2015 at 2:22pm*

**mathematics**

1.1 the third term of an arithmetic sequence is 8 and the 15 term is 44 . Calculate: 1.1 the common difference and first term. 1.2 the sum of the first 50 terms. 1.2 1;4;7;10.... Is an arithmetic sequence .find: 1.2.1 the 30 term.
*Tuesday, May 19, 2015 at 1:14pm*

**English**

1. Identify the choice that best describes the sentence: The dog always barks with pleasure when she sees us. A. declarative****** B. exclamatory C. imperative D. interrogative 2. Identify the correctly punctuated sentence. A.I'd love to see that movie again [maybe next ...
*Tuesday, May 19, 2015 at 9:41am*

**Quadratic Functions and Calculus **

Peter the punter decided to place $10,000 into a high growth share portfolio. After 3 weeks his investment was looking rather sad, with the value of his portfolio falling $2,025. Unperturbed, Peter stuck with his original plan to hold the stock for at least 6 months. But after...
*Tuesday, May 19, 2015 at 2:49am*

**science**

the resultant of two forces 13n and 20 n is f if the first forces is doubled the resultant is also doubled to 2f find the angle betwen the two forces
*Monday, May 18, 2015 at 10:56pm*

**History**

Who did Lincoln command as the first "General of the Union army"
*Monday, May 18, 2015 at 10:51pm*

**Math**

One phone company charges $12 per month plus $.05 per minute after the first 500 minutes. A second phone company charges $10 per month plus $.04 per minute after the first 300 minutes. How many minutes would a subscriber have to use so that the cost of the two plans is the ...
*Monday, May 18, 2015 at 9:24pm*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
*Monday, May 18, 2015 at 8:08pm*

**math**

Write the first 5 terms of the sequences defined by the recursive formula t1= 7, tn= 2tn-1 - 3n, n>1
*Monday, May 18, 2015 at 8:02pm*

**History**

1. Jackson's party believed that the national government should... 2. Decisions made by the John Marshall's Supreme Court generally.... 3. What was the first state to be carved out of the Louisiana Purchase?
*Monday, May 18, 2015 at 7:54pm*

**Calculus**

Find the x-coordinates of any relative extrema and inflection point(s) for the function f(x) = 3x^(1/3) + 6x^(4/3). You must justify your answer using an analysis of f '(x) and f "(x). I found the first and second derivative which i think is (8x+1)/(x^(2/3), and the ...
*Monday, May 18, 2015 at 7:09pm*

**MathematicalModels**

Consider the Black-Scholes-Merton model for two stocks: dS1(t)=0.1S1(t)dt+0.2S1(t)dW1(t) dS2(t)=0.05S2(t)dt+0.1S2(t)dW2(t) Suppose the correlation between W1 and W2 is 0.4. Consider the dynamics of the ratio S1/S2, where A,B,C,D,F,G,I,J,K,L are constants to be found: d(S1(t)/...
*Monday, May 18, 2015 at 6:18pm*

**math**

what are the first four numbers of the sequence represented by the expression n(n-2)-3 a)-5,-2,1,4 b)-4,-3,0,5 c)-3,0,3,6 d)-2,0,2,4 i think its c am i right?
*Monday, May 18, 2015 at 2:43pm*

**Math Help!!!**

How many 3 letter sequences can be formed if the first letter must always be a consonant (not a, e, i, o, u), the second letter must always be a vowel (a,e,i,o,u) and 3rd letter must be different from the first. A. 2100 B. 4056 C. 3250 D. 2625 I chose A... i guessed
*Monday, May 18, 2015 at 2:30pm*

**Ms. Sue PLZ HELP!!!(science)**

When evolution was first proposed, which of the following was used as evidence to support the idea? A. observations of nature *** B. laboratory experiments C. extensive fossil collections D. genetic sequences
*Monday, May 18, 2015 at 2:08pm*

**Math**

There eight girls competing in an ice=skating competition. In how many ways can they finish in first, second and third place? 366 1,680 2,016 40,320 I think it is 2,016
*Sunday, May 17, 2015 at 7:25pm*

**Math**

An oil company in Houston, Texas is hiring a geologist. The company interviewed 16 candidates. After the interviews, they ranked the top 5 candidates from first to 5th. How many lists can be formed?
*Sunday, May 17, 2015 at 5:59pm*

**Math**

Count the number of ways to award first place to third place to the top three groups in an engineering competition.
*Sunday, May 17, 2015 at 4:10pm*

**Math**

Geoff planted dahlias in his garden dahlias have bulbs that divide and reproduce underground in the first year Geoff garden produced 4 bulbs in the second year it produced 8 bulbs and in the third year it produced 16 bulbs if this pattern continues how many bulbs should Geoff ...
*Sunday, May 17, 2015 at 3:23pm*

**Math (Solving Equations) **

Find all solutions (answers should be given in simplified form). Some answers may involve the number i. *I will use lowercase l to represent absolute value lines.* 3 lx-1l + 4 = 19 We've never really worked with absolute value in solving equations before. Do I distribute ...
*Sunday, May 17, 2015 at 2:25pm*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16. Find S20
*Sunday, May 17, 2015 at 10:49am*

**math**

The areas of two similar triangles are 144cm square and 81cm square. If one side of the first triangle is 6cm, what is the length of the corresponding side of the second?
*Sunday, May 17, 2015 at 7:53am*

**Algebra**

Christy drove 300 miles on her vacation. She drove 1.25 time faster on the second 150 miles of her trip than on the first. Which expression represents the time she spent driving? Let x be her speed for the fist half. a. 375/x b. 33.5/x c. 270x d. 270/x
*Saturday, May 16, 2015 at 8:47pm*

**algebra**

a motorist left a city for a 295 mile. 7 hour trip. for the first part of the trip, the average speed was 40mph. for the remainder of the trip, the average speed was 55mph. How long did the motorist drive 55mph
*Saturday, May 16, 2015 at 7:22pm*

**Spanish**

These were recordings that I had to interpret and decide whether they are Past, Present, or future. I'm not sure on the first one which form it is I was hoping you could help me decide which sounds better. Thank you. 1. Se (celebra/Celebré) La feria de Abril cara ...
*Saturday, May 16, 2015 at 6:49pm*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16? Find S20
*Saturday, May 16, 2015 at 5:38pm*

**math**

The sum of the first 15 terms of an arithmetic series is 1290. The sum of the first 16 terms is 1464. Find t16? Find S20
*Saturday, May 16, 2015 at 3:02pm*

**probability**

Consider a Markov chain {X0,X1,…}, specified by the following transition probability graph. P(X2=2∣X0=1)= - unanswered Find the steady-state probabilities ð1, ð2, and ð3 associated with states 1, 2, and 3, respectively. ð1= - unanswered ð2= - ...
*Saturday, May 16, 2015 at 11:55am*

**probability**

For each one of the following definitions of the state Xk at time k (for k=1,2,…), determine whether the Markov property is satisfied by the sequence X1,X2,…. A fair six-sided die (with sides labelled 1,2,…,6) is rolled repeatedly and independently. (a) Let ...
*Saturday, May 16, 2015 at 11:53am*

**Science**

Which is the first layer of the atmosphere?
*Saturday, May 16, 2015 at 2:02am*

**History **

The 1964 Civil Rights Act did all of the following except: a. ban discrimination on the grounds of sex b. prohibit racial discrimination in employment c. prohibit racial discrimination in privately owned businesses that provided public accommodations (movie theaters, ...
*Friday, May 15, 2015 at 11:58pm*

**math**

**Problem 3: Create a linear function (y=mx+b) and graph the line for the following set of data. x | y 2 | 1 4 | 2 6 | 3 First, use the slope formula to find slope: (y2-y1)/(x2-x1) Then, put the slope (m), a 'y' point, and matching 'x' point into the formula y=...
*Friday, May 15, 2015 at 8:01pm*

**Probalility**

A fair coin is tossed repeatedly and independently. We want to determine the expected number of tosses until we first observe Tails immediately preceded by Heads. To do so, we define a Markov chain with four states, {S,H,T,HT}, where S is a starting state, H indicates Heads on...
*Friday, May 15, 2015 at 1:29pm*

**Chemistry**

The thiosulfate ion (S2O32-) is oxidized by iodine as follows: 2S2O32-(aq) + I2(aq) → S4O62-(aq) + 2I-(aq) In a certain experiment, 4.41×10-3 mol/L of S2O32- is consumed in the first 11.0 seconds of the reaction. Calculate the rate of production of iodide ion in ...
*Thursday, May 14, 2015 at 8:35pm*

**Math**

Q. Mrs.Ramirez's class was getting ready to plant tomatoes. They we're wondering if each package of tomato seeds contained the same number of seeds. They counted the seeds in four packages and found that there was a average of 73 seeds in the package. The first three ...
*Thursday, May 14, 2015 at 7:20pm*

**science**

Suppose some natural disaster occurs and a species of finch is forced to relocate from its original island where it dined on cactus flowers to an adjacent island with many fewer cacti but an overabundance of orchids. What would be the immediate consequences to the species in ...
*Thursday, May 14, 2015 at 4:55pm*

**algebra**

A relay team is going to participate in a 150-mile bicycle race. One rider averages 12 miles per hour. The second averages 16 miles per hour. Write a function modeling their trip, where x = the hours ridden by the first bicyclist and y = the hours ridden by the second bicyclist.
*Thursday, May 14, 2015 at 3:32pm*

**English**

6.) "Then felt like some watcher of the skies/When a new planet swims into his ken..." This excerpt from John Keats's "On First Looking into Chapman's Homer" is an example of a(n) A.) metaphor B.) simile C.) stanza D.) apostrophe Answer: 6.) B Thank...
*Thursday, May 14, 2015 at 2:50pm*

**psychology**

PLEASE HELP LAST QUESTION.??? Among William James's contributions to the science of psychology is that he A. he wrote the first American text in psychology b.. developed a psychodynamic treatment for mental illness. c.experimented with classical conditioning d. developed ...
*Thursday, May 14, 2015 at 1:46pm*

**Language Arts Ms. Sue?? Writeacher?? Reed?**

Which of the following sentences contains a pronoun in the objective case? -What costume should I wear to the party tonight? -Maybe Martha will loan me something.*** -Her costumes are always the best. -She won first prize in a Halloween contest last year! Thank you!
*Thursday, May 14, 2015 at 12:08pm*

**probability**

Problem 3: Checking the Markov property For each one of the following definitions of the state Xk at time k (for k=1,2,…), determine whether the Markov property is satisfied by the sequence X1,X2,…. A fair six-sided die (with sides labelled 1,2,…,6) is rolled ...
*Thursday, May 14, 2015 at 11:35am*

**Math**

Write the rule for this table as an equation. Write your answer as an equation with f first, followed by and equals sign z=3, f=50 z=4, f=61 z=5, f=72 z=6, f=83
*Wednesday, May 13, 2015 at 7:08pm*

**Language Arts Ms. Sue?? Writeteacher??**

"The River" 1 I sit on the bank in my special place, 2 Feel the breeze that lifts my hair, 3 And watch the ripples run across the river. 4 It is so peaceful here. 5 Deep enough to justify a fishing pole, 6 Quiet enough for my every thought, 7 The perfect place to ...
*Wednesday, May 13, 2015 at 5:22pm*

**Social Studies **

Which description characterizes volcanic islands and not coral atolls? A. Good soil for farming B. Islands are made of tiny skeletons C. Danger of flooding from raising ocean levels D. Sea salt in soil I don't know What was a likely motivation to send colonists to ...
*Wednesday, May 13, 2015 at 5:10pm*

**Science: Space**

I'm having trouble finding the answers to these fill-in-the-blank questions: Our understanding of the solar system has changed from an Earth-centered model of ____ and ____ to the sun centered model of _____ and _____. I was thinking for the first 2 blanks: rocks; oxygen ...
*Wednesday, May 13, 2015 at 5:09pm*

**Math**

A drawer contains 2 red socks, 3 white socks, 3 blue socks. Without looking , you draw out a sock, then return it, and draw a second sock. What is the probability that the first sock is blue and the second is red? 3/8, 2/5, 29/32, 3/32 I chose 3/8 is that correct
*Wednesday, May 13, 2015 at 2:13pm*

**Honor's Personal Finance**

What is the difference between the cost of attending a particular school and the expected family contribution, minus any other financial aid?
*Wednesday, May 13, 2015 at 1:40pm*

**Geometry/Math**

Two right circular cylinders have equal volume. The first cylinder has a radius of 6 inches and a height of 12 inches. What is the number of inches in the height of the second cylinder if its radius is 8 inches? Express your answer as a common fraction, without units.
*Wednesday, May 13, 2015 at 11:57am*

**Math**

The number of sequence is 17 ,the second is 3.what is the first number?
*Wednesday, May 13, 2015 at 1:54am*

**Pre-Algebra**

1. Given the function rule f(x) = x² – 3x + 2, what is the output of f(–2)? 2. Suppose you earn $12 each time you mow the lawn. Write the function describes the relationship between your total earnings E and the number of times you mow the lawn, m? 3. Mia ...
*Tuesday, May 12, 2015 at 11:13pm*

**math**

IN a geometric sequence the 5th term is 60 and the first five terms are 783/2. What is the sum of the first 10 terms.
*Tuesday, May 12, 2015 at 9:07pm*

**algebra**

brittany wrote a computer program that generates two random numbers between one and eleven when she runs t what is the probability that the first value will be more than 9 and the second will be less than 3
*Tuesday, May 12, 2015 at 8:56pm*

**Math**

Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue eyes? If her first ...
*Tuesday, May 12, 2015 at 6:26pm*

**English**

At Eastman High School reunions, the conversation usually gets around to the question “who was our best teacher?” And year after year, the (1) ____(Consensus)of the graduates has been that Mr. MacDonald was the best. Many remember Joe MacDonald as the epitome of ...
*Tuesday, May 12, 2015 at 6:08pm*

**Probability**

Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue eyes? If her first ...
*Tuesday, May 12, 2015 at 5:27pm*

**Math 231**

In Mr. Everett's first-period class, 18 of 25 students passed the last test. In his second period, 17 of 23 passed. Use the percents to conclude which class did better. Show all work.
*Monday, May 11, 2015 at 6:33pm*

**math**

We throw 250 darts (one by one) at 1200 dart boards. Each dart strikes a board randomly. No dart's strike affects any other. What is the probability that two darts will strike the same board? I make it 1 in 1200, b/c the probability of the 1st dart striking a board is 1. ...
*Monday, May 11, 2015 at 3:42pm*

**M**

A woman spend half of her money on book and give 1 rupee to a man,than she sped half of rest money and give 2 rupee to a man,than spend half rest money give3 rupee to a man.at last 1 rupee left.what amound he have at first
*Monday, May 11, 2015 at 5:33am*

**History--Ms. Sue, Writeacher, Reed??**

The women's-rights movement in the United States was first started by women who -faced economic discrimination in the workplace -had experience in other social-reform movements*** -were important figures in the Second Great Awakening. -had an impact on the outbreak of the ...
*Monday, May 11, 2015 at 2:18am*

**Stats**

Makers of a new pain-relieving medication claim that it relieves chronic pain faster than the current top-selling pain reliever on the market. A double-blind experiment was conducted in which 10 people who experience chronic pain were randomly selected to take either the new ...
*Sunday, May 10, 2015 at 8:14pm*

**math**

a locker combination has tow nonzero digits and digits can be used twice. the first number is 8.what is the probality that the second number is 8
*Sunday, May 10, 2015 at 7:05pm*

**S.S**

The merrimack and the monitor changed naal warfare because they engaged in the first battle between A. metal covered ships B. wooden ships C. aircraft carriers D. ships carrying guns I say its B, please check.
*Sunday, May 10, 2015 at 2:38pm*

**Physics**

Laser light of wavelength 632nm is incident on a diffraction grating having 600 lines per mm. Determine the angular separation between the first and second order maxima
*Sunday, May 10, 2015 at 9:17am*

**Algebraic Geometry **

A 33 kilometer bicycle race course is designed in the shape of a triangle. The first leg of the race is 5 km shorter than the second, and the third leg is twice the first. Find the distance of each leg of the race.
*Sunday, May 10, 2015 at 4:23am*

**Math**

A bag of five apples contains three ripe apples and two rotten apples. If a ripe apple is selected first, what is the probability that a second apple selected is rotten?
*Saturday, May 9, 2015 at 4:42pm*

**Chem 100**

An electrochemical cell is made from two half cells. The first contains 1M hydrochloric acid above 1 atm Cl2gas (w/ a platinum electrode). The other half cell contains a solution of H2O2 above 1 atm of O2 (also with a platinum electrode). A spontaneous reaction occurs. a. ...
*Saturday, May 9, 2015 at 4:15pm*

**math**

i started with the first charges: sqrt[2(20)(100))/0.05]. I don't know I'm doing right. Here the problem: Suppose you have a choice of three suppliers for footballs. the first charges $100 per delivery but won't deliver more than 200 at a time; the second charges $...
*Saturday, May 9, 2015 at 3:47pm*

**maths**

The 5th term of an arithmetic sequence is 11,12th term is 32.What are the first 3 terms?
*Saturday, May 9, 2015 at 4:01am*

**math**

the first and last term of an AP is a and l.show nth term from begining and nth term from end is a l
*Saturday, May 9, 2015 at 3:26am*

**Chemistry**

What is the pH, pOH, [H+] and [OH-] for a solution that contains 5.25 x 10^-3 moles of HCl dissolved in 3.25 L of water? I was gone the day my teacher explained this and I'm completely lost on what to do. An outline of steps needed to solve the problem would be helpful. ...
*Friday, May 8, 2015 at 8:39pm*

**MATH**

Your original purchase price was $825.00 plus 7% sales tax. You enter into an agreement where the interest (12.5% APR) is waived for the first 12 months provided you make the required monthly payments; otherwise the interest is accrued from the date of purchase. You miss the ...
*Friday, May 8, 2015 at 4:56pm*

**analytical chemistry**

Any help is greatly appreciated 5mL of a solution A (unknown concentration) was transferred into sic 25mL volumetric flask. The following volumes of a standard solution of A with with a concentration 75ppm were added to the flask: 0mL, 0.5mL, 1mL, 1.5mL, 2mL, and 2.5L. The ...
*Friday, May 8, 2015 at 3:06pm*

**English Ms Sue/Writeacher**

Which sentence is punctuated incorrectly? A.) When you get there, you will see him, of course. B.) Hey, Chris, do you want to watch the game on TV tonight? C.) Needless to say, nobody thought that her joke was particularly funny. D.) The story was, far too long and way too ...
*Friday, May 8, 2015 at 12:29pm*

**7th grade math (probability)**

I'm re-posting corrections originally from Wednesday in addition to new ones. Still not sure how to answer #4. 2. Edwin rolls a number cube and then spins a color from a color card (red, yellow, blue, green, white). What is the probability that he will roll an even number ...
*Friday, May 8, 2015 at 8:16am*

**English**

I am "applying"(practicing writing resumes in english) for a leadership position at a local non profit and I am writing my cover letter, expressing why I want to serve as a president or marketing director. Though this is my first time taking on an exec position role ...
*Thursday, May 7, 2015 at 9:45pm*

**Calc/Precalc**

Find the derivatives of 1. ln[(2x^3⋅2e^x)] 2. xy = cot(xy) 3. y = cos(x^3 + 27) I don't really know where to start with these. The answer is (3+x)/(x) for the first, y/-x for the second, and 35. -3x^2 sin(x^3 + 27) but I have no idea how they got there. Thank you!
*Thursday, May 7, 2015 at 9:15pm*

**Calculus**

Consider a differentiable function f having domain all positive real numbers, and for which it is known that f'(x)=(4-x)x^-3 for x>0. A. Find the x-coordinate of the critical point of f. Determine whether the point is a relative maximum, a relative minimum, or neither ...
*Thursday, May 7, 2015 at 9:03pm*