# nan

Most popular questions and responses by nan-
## math

Please someone show me how to work this one out? Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits $3000 in a bank acct that pays an annual interest rate of 20%. You can assume that this interest rate is fixed-that is, it

*asked on February 26, 2012* -
## physics

A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.4 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?

*asked on October 3, 2011* -
## Quick calc question

Find the distance, in feet, a particle travels in its first 2 seconds of travel, if it moves according to the velocity equation v(t)= 6t2 − 18t + 12 (in feet/sec). 4 5

*asked on March 3, 2016* -
## Calculus

The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

*asked on March 11, 2016* -
## Calculus

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval. Give three decimal places in your answer and explain, using a graph of f(x), what the Riemann

*asked on March 10, 2016* -
## Social studies

Social studiesWhat promise did Stalin make and break after Soviet occupation of several eastern European countries

*asked on February 20, 2019* -
## economics

Suppose that there are three beachfront parcels of land available for sale in Asilomar and six people who would each like to purchase one parcel. Assume that the parcels are essentially identical and that the minimum selling price of each is $600,000. The

*asked on February 9, 2012* -
## Quick calc question

Find the average value of f(x) = 1 over x over the interval [e, 2e]. the natural logarithm of 2 over e negative 1 over 2 times e squared Ln2

*asked on March 3, 2016* -
## Chemistry

How many liters of Chlorine at STP will react with 35L of 02 at STP given the following reaction? 2Cl2(g) + 7O2(g) - 2Cl2O7(l)

*asked on May 4, 2011* -
## Calculus

Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx. (Your answer must include the antiderivative.) Use a graph of the function to explain the geometric meaning of the value of the integral.

*asked on March 10, 2016* -
## Calculus

The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

*asked on March 10, 2016* -
## Calculus

Find the number b such that the line y = b divides the region bounded by the curves y = x2 and y = 4 into two regions with equal area.

*asked on February 23, 2016* -
## Quick calc question

An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is −32 ft/sec2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at

*asked on March 3, 2016* -
## Chemistry

Determine the rate law, including the values of the orders and rate law constant, for the following reaction using the experimental data provided. Q + X yields products Trial [Q] [X] Rate 1 0.12 M 0.10 M 1.5 × 10-3 M/min 2 0.24 M 0.10 M 3.0 × 10-3 M/min

*asked on March 4, 2016* -
## Chemistry

A match must be struck against an object to produce a spark to start the burning process. Once the match starts burning, it releases a large amount of energy. Describe, in detail, what the potential energy diagram would look like for the burning of a

*asked on March 4, 2016* -
## Biology

Describe a specific type of chemical or audible communication used by animals to respond to an external stimulus and the resulting change in behavior. Explain how this type of communication may relate to natural selection within a population.

*asked on March 4, 2016* -
## Social studies

How did President Truman guard against communist spies in AmericaK he set up immigration quotas on all people from Eastern Europe be he made all kind meanest related activities illegal in the United States see he ordered the investigation of government

*asked on February 20, 2019* -
## economics

Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits $3000 in a bank acct that pays an annual interest rate of 20%. You can assume that this interest rate is fixed-that is, it won’t change over time. At the time of her deposit,

*asked on February 26, 2012* -
## Chemistry

Which reaction did you perform in the hands-on activity? Describe the chemical combination that you investigated. Also describe any observations from the investigation, including the temperature change of the container.

*asked on March 4, 2016* -
## Biology

Explain how cell membranes and their components participate in intercellular signaling. Give a specific example of cell membrane involvement in one particular type of cellular signaling.

*asked on March 4, 2016* -
## Biology

In one signaling pathway, cyclic AMP (or cAMP) acts as a second messenger in a series of reactions that result in the relaxation of smooth muscle cells in artery walls. Define cyclic AMP and describe the role and properties of a second messenger. Then

*asked on March 4, 2016* -
## Calculus

Express the given integral as the limit of a Riemann sum but do not evaluate: the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.

*asked on March 10, 2016* -
## Math

Increase $980 by 5% and then decrease the result by 5%. Calculate the overall percentage loss

*asked on April 5, 2018* -
## critical thinking

I am struggling with deciding which evaluation criteria best fits for writing a critical essay on the passage written by Stephen Chapman...Legal Drugs Unlikely to Foster Nation of Zombies. I believe that this is a non-deductive argument. I was considering

*asked on July 20, 2013* -
## chemistry

Calculate the ionic strength of 100mM solution of Mg3(PO4)2 in 10 mM acetic buffer (CH3COONa)

*asked on December 14, 2011* -
## History

What was Truman’s response when coming as in began spreading beyond the Soviet run Eastern Europe A he made a plate in your nine at Nations to adopt a policy of containment day he said I am military to the Soviet union to pressure them to contain

*asked on February 20, 2019* -
## math

Problem Page Translate this sentence into an equation. 96 is the product of Han's height and 6 . Use the variable h to represent Han's height.

*asked on March 16, 2016* -
## Science

How can you make a lever? In this activity. You will lift a hardcover book with a lever made from a marker and ruler. You need: -marker -hardcover book -tape -ruler What to do? 1/Tape a marker to the table. Place the ruler across the marker. 2/place a book

*asked on April 29, 2019* -
## Social studies

Social studiesWhich one of the following events led to the Korean War and the invasion of Japan and to Korea be sending to you are you and forces into career to assist South Korea de the division of Korean between the Soviets and America is the formation

*asked on February 20, 2019* -
## Biology

Describe what you observed in the hands-on animal behavior lab. What conclusions did you draw from the data? Explain your answer.

*asked on March 4, 2016* -
## Calculus

The particular solution of the differential equation dy/dt=2*y for which y(0) = 60 is y = 60e2t y = 60 e0.5t y = 59 + et y = 30et

*asked on March 10, 2016* -
## Trig

Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < 2pi Find: sin (v + u) cos (v - u) tan (v + u) First compute or list the cosine and sine of both u and v. Then use the combination rules sin (v + u) = sin u cos v + cos v sin u. cos (v - u) = cos u

*asked on December 29, 2006* -
## Business

Assume that WilyMarketer is running an email campaign to acquire new customers. It is considering two options: Option A would use a high quality rental list of 100,000 email addresses. Direct costs under this option would be the rental list at $250/m and

*asked on September 25, 2012* -
## Chemistry

Explain, in terms of collision theory, how and why a reaction’s rate changes as the reaction progresses.

*asked on March 4, 2016* -
## Calculus

Find the specific solution of the differential equation dy/dx = 4y/x^2 with condition y(−4) = e. y equals negative 1 minus 4 divided by x

*asked on March 11, 2016* -
## Calculus

Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval. Give three decimal places in your answer.

*asked on March 10, 2016* -
## Quick calc question

For an object whose velocity in ft/sec is given by v(t) = −t2 + 6, what is its displacement, in feet, on the interval t = 0 to t = 3 secs? 9.000

*asked on March 3, 2016* -
## Chemistry

Fermentation of carbohydrates is a source of 1. ethanol 2. MTBE 3. methanol 4. ethers I am working on self test in the book, but the answer is not in the back of the book for this. Any help??

*asked on November 17, 2011* -
## music

can you give me words that correspond to the count of a half-note and words that correspond to the count of a quarter note? half note (two beats) "one and, two and" quarter note (one beat) "one, two, three, four" Quarter Note: Sit, Pat, Lit Half Note:

*asked on July 20, 2005* -
## Biology

Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.

*asked on March 4, 2016* -
## Chemistry

Exhibit 8-1 For the following questions, consider the equation below. Zinc will react with a solution of hydrochloric acid to produce hydrogen gas: Zn(s) + 2 HCl(aq) ® ZnCl2(s) + H2(g) Refer to Exhibit 8-1. How many moles of hydrochloric acid react with

*asked on December 14, 2011* -
## Calculus

Find the specific solution of the differential equation dy/dx = 4y/x^2 with condition y(−4) = e. y equals negative 1 minus 4 divided by x y equals negative 1 times e raised to the 1 over x power y equals e raised to the negative 4 over x power None of

*asked on March 10, 2016* -
## Biology

Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this

*asked on March 10, 2016* -
## Biology

Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.

*asked on March 10, 2016* -
## Math payment calculation

What isrequired monthly payment for 30-years $100,000 mortgage at 12% APR. What formula?

*asked on March 25, 2015* -
## Biology

Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this

*asked on March 4, 2016* -
## Algebra 2

The sequence is defined by a recursion formula. Write the first four terms of the sequence: a_1=9; a_n=3a_n-1

*asked on August 7, 2014* -
## Chemistry

How much heat is released when 10 g of steam at 100°C is cooled to 10 g of liquid water at 100°C? I am working on a practice test and the answer is not in the back of the book. Can some one help me. 1. 10 cal 2. 5400 cal 3. 800 cal 4. 6200 cal

*asked on November 10, 2011* -
## Calculus

Which of the following is the general solution of the differential equation dy/dx = 2x/y? y2 = x2 + C y2 = 2x2 + C

*asked on March 11, 2016* -
## Algebra 2-Probability

1. What is the theoretical probability of rolling a sum less than 5 using two number cubes? a.1/6 b.1/4 c.1/2 d.3/4 2. Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in

*asked on September 19, 2011* -
## business pre-cal

Find the annual rate, r that produces an effective annual yield of 6.3% when compounded continuosly.

*asked on November 1, 2011* -
## Chemistry

A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH- Some of the answers people are giving me are confusing. I just need to know if

*asked on October 22, 2011* -
## Calculus

The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15

*asked on March 11, 2016* -
## Chemistry

How does the potential energy of the reactants compare to the potential energy of the products in an exothermic reaction, and where does the energy that is given off come from? Explain your answer in complete sentences.

*asked on March 4, 2016* -
## Algebra 2

Recursion formula for a given population for each interval,n, at a time, and k is a constant called the Malthusian factor: a_n=ka_n-1(1-a_n-1) - Assuming n is measured in weeks, calculate the insect population for weeks 2, 3, and 4 if the initial

*asked on August 7, 2014* -
## Biology

Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.

*asked on March 10, 2016* -
## Calculus

Find the area of the region bounded by the graphs of y = 2 − x2 and y = −x.Find the area of the region bounded by the graphs of y = 2 − x2 and y = −x.

*asked on February 23, 2016* -
## business

The Recall Computer Company has six territories, each represented by one salesperson. After extensive planning, the company determines that each territory would be expected to achieve the following percentages of total company sales for 2008: Territory

*asked on September 4, 2012* -
## Biology

Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.

*asked on March 4, 2016* -
## Quick calc question

Find the velocity, v(t), for an object moving along the x-axis if the acceleration, a(t), is a(t) = 2t + sin(t) and v(0) = 4. v(t) = t2 + cos(t) + 3 v(t) = 2 + cos(t) + 1

*asked on March 3, 2016* -
## BIOLOGY

Describe the processes of transcription and translation and correctly identify the anticodon for the following DNA template strand-ACG TGG GCA TGA ACG TGG. Which amino acids do these anticodon represent?

*asked on July 26, 2012* -
## Chemistry

Which equation does not fit the definition of oxidation? 1. Na ® Na+ + e- 2. C2H6 ® H2 + C2H4 3. C + O2 ® CO2 4. Ag+ + e- ® Ag Can some one help. I do not know which one. I am working on a practice test and there are no answers in the back of the book.

*asked on November 3, 2011* -
## math

What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

*asked on November 2, 2011* -
## Public adminstration

The demand for desk lamp is linear,and the price of desk is $30.the demand curve for desk lamp then shifts out parallel to itself in response to increase in consumer income.prove that the demand for desk lamps become less price elastic after the shift in

*asked on August 27, 2017* -
## Calculus

Find the area of the region bounded by the graphs of y = x, y = −x + 4, and y = 0. 1 2 4 None of these

*asked on February 23, 2016* -
## Maths

A 73kg worker needs to transport concrete bricks using a trolley to the construction area via an elevator. The trolley weighs 1000kg while 5 concrete bricks weigh 330kg. If the elevator has a maximum capacity of 1500kg, how many bricks can the worker

*asked on February 20, 2016* -
## Algebra 2

The sequence is defined by a recursion formula, write the first four terms of the sequence; a_1=100; a_n=1/2a_n-1 +4

*asked on August 7, 2014* -
## Algebra 2

The sequence is defined by a recursion formula.Write the first four terms; a_1=-5; a_n=2a_n-1 +7

*asked on August 7, 2014* -
## computer science 104

Create a method areaOfaTrapeziod when given a, b, and h (all doubles), will return the area (double) of a trapezoid. Use the equation pictured below In the code, i should 1. Create the prototype for the method 2. create the method 3. call it from the

*asked on November 3, 2011* -
## Psy

Complate the following chart. The first column shows the name of a research method used in psychology.In the second column, write a brief description of that research method. In the column, provide a situation when this method could be applied. Scientific

*asked on January 25, 2011* -
## agriculture

1)what is agriculture and why is it important in our daily life? can you give and describe 7 garden tools being used at home? http://en.wikipedia.org/wiki/Agriculture

*asked on June 22, 2005* -
## Hudi

Sovereign each system by substitution.check your answer. 1/ y=x_2 y=4x+1 My answer: x_2=4x+1 2 2 x=4x+3 _4 _4 x= 1 y=x_2 y=_2 Solution:(1,_2) 2/ y=x_4 y=_x+2 My answer: x_4=_x+2 +4 +4 x=_x+6 +x +x x=7 y=x_4 y=7_4 y=3 Solution:(7,3) 3/ 2x+y=8 y=x_7 My

*asked on September 16, 2018* -
## Calculus

The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15 xy = 15

*asked on March 10, 2016* -
## Maths

A 73kg workers need to transport concrete bricks using a trolley to the construction area via an elevator. The trolley weighs 100kg while 5 concrete bricks weigh 330kg. If the elevator has a maximum capacity of 1500kg, how many bricks can the worker

*asked on February 19, 2016* -
## math

The Recall Computer Company has six territories, each represented by one salesperson. After extensive planning, the company determines that each territory would be expected to achieve the following percentages of total company sales for 2008: Territory

*asked on September 5, 2012* -
## chemistry

Which HPLC mode can you choose to separate a micture of alkanes? ( Normal-phase, reversed-phase, ion-exchange, or size-exclusion)

*asked on December 14, 2011* -
## Computer science

THIS IS C PROGRAMMING I NEED TO CREATE A METHOD! Create a method areaOfaTrapeziod when given a, b, and h (all doubles), will return the area (double) of a trapezoid. Use the equation pictured below. THANKS IN ADVANCE :)

*asked on November 2, 2011* -
## Math

(4,57)(3,20)(2,1)(5,?) What is the missing number?

*asked on March 18, 2016* -
## Algebra 2

The sequence is defined by a recursion formula. Write the first four terms of the sequence; a_1=0; a_n=5a_n-1 +7

*asked on August 7, 2014* -
## Algebra 2

Year: 1, 2, 3, 4, 5 Sale:.48,1.032,2.198,4.726,10.208 (in millions) -If the sales growth pattern continues, what will be the sales for ABC Company in year 12? -What will be the total sales for ABC Company for years 1 through 12? I know that this is a

*asked on August 7, 2014* -
## Algebra 2

For each sequence, write the next four terms 1. 36,12,4,4/3... I know that the pattern in that the term is divided by 3, but I have no idea how to calculate/write the next four terms.

*asked on August 7, 2014* -
## Chemistry

The fusion of nuclei requires 1. slow moving (thermal) neutrons 2. a critical mass 3. heavy nuclei 4. plasma at extremely high temperatures I have another question that I do not have the answer in the back of my book. I need help. THank you

*asked on December 14, 2011* -
## math

What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

*asked on November 2, 2011* -
## math pre cal

Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?

*asked on November 2, 2011* -
## math

What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

*asked on November 1, 2011* -
## math ratio

The ratio of the distances a driver and a 2 iron can propel a golf ball is 5 to 4. If a golfer averages a distance of 200 yards with a 2 iron, how far should she average with a driver. I get 250 yards is that right? 5/4=x/200 is ratio set-up

*asked on October 25, 2011* -
## Chemistry

A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH-

*asked on October 22, 2011* -
## fractions

what is 5 3/7 x 1/11 equal

*asked on June 7, 2011* -
## 4th grade

What is the correct punctuation in the following sentences. Do I need quotation marks? Sarah: I am going to the game tomorrow. Mary: Okay. Do you want to ride with me?

*asked on April 19, 2010* -
## English

Has the cat got your_______?

*asked on February 20, 2016* -
## Algebra 2

A species of bees make hexagonal, 6 sided, honeycombs.The bees begin with on hexagonal cell then make successive rings of hexagonal cells around the initial cell. Make a table of values for the number of cells in each of the first 8 rings (1st ring, 2nd

*asked on August 7, 2014* -
## Algebra 2

Is this sequence arithmetic, geometric, or neither? 3,10,31...

*asked on August 7, 2014* -
## Algebra 2

Is this sequence arithmetic,geometric, or neither? -111,2.5,115.5

*asked on August 7, 2014* -
## Algebra 2

For the following sequence, determine the indicated geometric means; 180,_,_,_,_,-5.625,... I could hardly even calculate this! Anyone have a better idea?

*asked on August 7, 2014* -
## Algebra 2

-S_16 for the series 5+20+80+...

*asked on August 7, 2014* -
## Algebra 2

Find the sum of the first 12 terms of this sequence: 9,4.5,2.25,... I believe that the pattern is dividing the term by 2,and I keep getting 7.9956 for the sum, but that is incorrect. Anyone understand this?

*asked on August 7, 2014* -
## america gov

Which of the following goods would you guess that the American colonies did not export to England?

*asked on May 31, 2014* -
## calculus

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. (Round your answer to three decimal places.) y = e^−x y=0 x=0 x=7 I got the answer ~10.783 Idk why it's wrong

*asked on January 22, 2012* -
## Physics

A brass trombone

*asked on November 20, 2011* -
## math

Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?

*asked on November 1, 2011*

## Pages

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