Saturday

March 28, 2015

March 28, 2015

Total # Posts: 111

**Chem **

How many moles of NH3 must be added to 1.00 L of solution to dissolve 0.979 g of CuCO3? For CuCO3, Ksp = 2.3 × 10-10. Ignore hydrolysis of CO32-, but consider the formation of the complex ion Cu(NH3)42+.
*March 9, 2015*

**trig**

An airplane is traveling at a speed of 724 km per hour at a bearing of N30°E. If the wind velocity is 32 km per hour from the west, find the resultant speed and direction of the plane.
*February 23, 2015*

**nusyu**

A small, spherical bead of mass 3.00 g is released from rest at t = 0 from a point under the surface of a viscous liquid. The terminal speed is observed to be £oT = 2.00 cm/s. Find (a) the value of the constant b that appears in Equation 6.2, (b) the time t at which the ...
*October 17, 2014*

**probability**

Let Y=X2. Calculate the following probabilities: P(Y=0)= P(Y=1)= P(Y=2)=
*February 27, 2014*

**phy**

What is the distance between an object and its real image formed by a thin converging lens with focal length f = 21 cm, if the object distance is 100 cm? (b) What is the minimum object-image distance for a real image formed by that lens?
*November 8, 2013*

**Math**

a gym charges an intitL $100 membership fee and $60 each month. Write an equation that represent the total cost, C, for belonging to the club for M months
*October 7, 2013*

**ACC**

PATTYS BAKER HAS A COST OF GOODS SOLD FOR THE YEARS 2011,2010,AND 2009 RESPECTIVELY , OF $28,600,$26,900. AND $25,600. IF 2009 IS THE BASE YEAR, THE TREND PERCENTAGE FOR 2011 IS?
*September 22, 2013*

**BUS**

PROVIDED ACCOUNTING SERVICES,AND ANALYZED THE FINANCIAL STRENGTH OF HER CLIENTS BUSINESSES. CARMEN IS WORKING AS A
*August 12, 2013*

**Math**

A man bought a house for 76,000. he made a down payment of 26,000 and agreed to pay 2,500 each year with a interest of 14% on an unpaid balance. His payment at the end of the second year was?
*August 8, 2013*

**heeeeeeelp math**

For every positive integer n, consider all monic polynomials f(x) with integer coefficients, such that for some real number a x(f(x+a)−f(x))=nf(x) Find the largest possible number of such polynomials f(x) for a fixed n<1000.
*July 11, 2013*

**heeeeeeeeelp math**

A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. Determine how many subsets of {1,2,…,25} are packed. Details and assumptions i and j need not be distinct. If i=j is in the set, then clearly so is &#...
*July 10, 2013*

**heeeeeeelp math3**

For every positive integer n consider all polynomials f(x) with integer coefficients, such that for some real number a *x(f(x+a)−f(x))=n*f(x) Find the largest possible number of such polynomials f(x) for a fixed n<1000?
*July 10, 2013*

**heeelp math2**

Find the number of polynomials f(x) that satisfy all of the following conditions: f(x) is a monic polynomial, f(x) has degree 1000, f(x) has integer coefficients, f(x) divides f(2x^3+x)
*July 10, 2013*

**heeeeeelp math**

i am Clavin
*July 10, 2013*

**heeeeeelp math**

A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. Determine how many subsets of {1,2,…,25} are packed. Details and assumptions i and j need not be distinct. If i=j is in the set, then clearly so is &#...
*July 10, 2013*

**cananyone solvethis math**

A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. Determine how many subsets of {1,2,…,25} are packed. Details and assumptions i and j need not be distinct. If i=j is in the set, then clearly so is &#...
*July 9, 2013*

**heeeeeeeeelp math**

For every positive integer n consider all polynomials f(x) with integer coefficients, such that for some real number a *x(f(x+a)−f(x))=n*f(x) Find the largest possible number of such polynomials f(x) for a fixed n<1000?
*July 9, 2013*

**heeeelp math**

Find the number of polynomials f(x) that satisfy all of the following conditions: f(x) is a monic polynomial, f(x) has degree 1000, f(x) has integer coefficients, f(x) divides f(2x^3+x)
*July 9, 2013*

**heelp math**

A graph is constructed iteratively according to the following algorithm. The graph starts as a single vertex. With probability p, the graph stops here. Otherwise, 3 new vertices are constructed and joined to this vertex. If we have a graph with more than one vertex, for each ...
*July 8, 2013*

**heeeeeelp math**

For every positive integer n, consider all polynomials f(x) with integer coefficients, such that for some real number a x*(f(x+a)−f(x))=n*f(x) Find the largest possible number of such polynomials f(x) for a fixed n<1000?
*July 8, 2013*

**Computer pls help**

A Harshad Number in a given number base is an integer that is divisible by the sum of its digits when written in that base. For example, the number 11 in base 5 (which is 6 in base 10) is divisible by 1 + 1 = 2 in base 5. It is therefore a Harshad number in base 5. 1 is the ...
*July 7, 2013*

**heeeeeelp math**

In a tetrahedron ABCD, the lengths of AB, AC, and BD are 6, 10, and 14 respectively. The distance between the midpoints M of AB and N of CD is 4. The line AB is perpendicular to AC, BD, and MN. The volume of ABCD can be written as a√b, where a and b are positive integers...
*July 7, 2013*

**heeeeeelp math**

x)=x ^2 +bx+c , b and c real .Find the minimum of (max|f(x)|)for x∈[−10,10]?
*July 7, 2013*

**heeeeeelpm math**

A strip of 41 squares is numbered 0,1,2,…,40 from left to right and a token is placed on the square marked 0. Pinar rolls a pair of standard six-sided dice and moves the token right a number of squares equal to the total of the dice roll. If Pinar rolls doubles, then she ...
*July 7, 2013*

**Math (Geometry)**

150
*July 7, 2013*

**plls help maaath**

f(x)=x ^2 +bx+c , b and c real .Find the minimum of (max|f(x)|)for x∈[−10,10]?
*July 6, 2013*

**heeeeeeelp math**

f(x)=x ^2 +bx+c , b and c real .Find the minimum of (max|f(x)|)for x∈[−10,10]?
*July 6, 2013*

**heeeeeelp computer**

A Harshad Number in a given number base is an integer that is divisible by the sum of its digits when written in that base. For example, the number 11 in base 5 (which is 6 in base 10) is divisible by 1 + 1 = 2 in base 5. It is therefore a Harshad number in base 5. 1 is the ...
*July 5, 2013*

**heeeeeeeelp math**

In triangle ABC, ∠A=20∘ and ∠B=80∘. Let D be a point on line segment AB such that AD=BC. What is the measure (in degrees) of ∠ADC?
*July 5, 2013*

**helllllppp math**

In a tetrahedron ABCD, the lengths of AB, AC, and BD are 6, 10, and 14 respectively. The distance between the midpoints M of AB and N of CD is 4. The line AB is perpendicular to AC, BD, and MN. The volume of ABCD can be written as a√b, where a and b are positive integers...
*July 5, 2013*

**heeeeeeeeeeelp math**

A strip of 41 squares is numbered 0,1,2,…,40 from left to right and a token is placed on the square marked 0. Pinar rolls a pair of standard six-sided dice and moves the token right a number of squares equal to the total of the dice roll. If Pinar rolls doubles, then she ...
*July 5, 2013*

**heeeeeeeelp math**

Find the smallest n such that for some prime p, at least 20 of the numbers 1,2,...,n are quadratic non-residues modulo p.
*July 5, 2013*

**physics helpdifficult**

i want the answer just dont leave it upon me just giving the process..................................................................................................Two thin and identical steel rods move with equal speeds v=1 m/s in opposite directions and collide ...
*June 27, 2013*

**math waaaaarning**

Find the sum of all primes q<1000 such that for some prime p<q , both q divides p^3-1 and p divides q^3-1
*June 26, 2013*

**heeeeeeeelp physics**

Two thin and identical steel rods move with equal speeds v=1 m/s in opposite directions and collide longitudinally.The collision is perfectly elastic and the rods swap their velocities. How long does the collision last in seconds if the length of the rods is l=30 cm. Assume ...
*June 26, 2013*

**Math (Combinatorics)**

Two thin and identical steel rods move with equal speeds v=1 m/s in opposite directions and collide longitudinally.The collision is perfectly elastic and the rods swap their velocities. How long does the collision last in seconds if the length of the rods is l=30 cm. Assume ...
*June 26, 2013*

**Math (Combinatorics)**

16
*June 26, 2013*

**help maaaaath**

Find the largest possible number of distinct integer values {x_1,x_2,…,x_n}, such that for a fixed reducible degree 4 polynomial with integer coefficients, |f(x_i)| is prime for all i?
*June 23, 2013*

**plsheeeeeeeeeeelp math**

Find the largest possible number of distinct integer values {x_1,x_2,…,x_n}, such that for a fixed reducible degree 4 polynomial with integer coefficients, |f(x_i)| is prime for all i?
*June 22, 2013*

**heeeeeeeeelp math**

Optical fibers are devices used for guiding light in many applications, most notably for fast communication. A fiber consists of a glass cylinder surrounded by a wall covered in a special coating. The fibers work on a principle called total internal reflection: light enters ...
*June 20, 2013*

**geometry**

sodium has a body-centered cubic structure with a unit cell that is 430 picometers wide. estimate the radius of a sodium atom. please help me, I don't know how to get the solution. THank you
*January 28, 2013*

**math**

The following numbers can be represented as 8-bit numbers in the binary representation.Which of these has a ‘1’ in the second place from the right in the binary representation? A. 171 B. 185 C. 214 D. A and C
*January 15, 2013*

**statistics**

considering that a research can test at the <p=.05(95%), p=.001 (99.9%) level for statistical significance, how would you use these 3 levels in relationship to risk to patients in implementing the decision of your research?
*December 22, 2012*

**college biology**

1/4 A 1/4 B 1/4AB 1/4 O
*December 9, 2012*

**math**

Assume the $8,000 Treasury bill, 1.75% for 50 weeks. Calculate the effective rate of interest.
*October 31, 2012*

**physics**

A certain elevator cab has a total run of 204 m and a maximum speed is 321 m/min, and it accelerates from rest and then back to rest at 1.21 m/s2. (a) How far does the cab move while accelerating to full speed from rest? (b) How long does it take to make the nonstop 204 m run...
*October 16, 2012*

**chemistry**

A 10.0 ml diluted chloride sample required 44.89 ml of 0.01982 M AgNO3 to reach the Fajans end point. how many moles of Cl- ions were present in the sample? What was the concentration of chloride in the diluted solution?
*October 8, 2012*

**algebra**

A total of $12,000 is invested in two funds paying 9% and 11% simple interest. If the yearly interest is $1,180, how much of the $12,000 is invested at each rate? We have two unknowns: the amount of money invested at 9% and the amount of money invested at 11%. Sentence (1) &#...
*October 6, 2012*

**math**

Facebook is becoming a social superpower with 126 million registered members who log in at least once daily. They share 1.6 billion photos and 10.6 million videos each month. What is the average number of photos and videos that each active member posts? Round to the nearest ...
*September 5, 2012*

**Calculus**

Suppose f(x) is a differentiable function with f(-1)=2 and f(2)=-1. The differentiable function g(x) is defined by the formula g(x)=f(f(x))' A. Compute g(-1) and g(2). Explain why g(x)=0 must have at least one solution A between -1 and 2. B. Compute g'(-1) and g'(2...
*April 1, 2012*

**math**

32.5
*November 23, 2011*

**English**

Hi can you please help correct this paragraph or give me direction. Thank you, the assignment is: Your cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to ...
*September 9, 2011*

**English**

I have posted this in 2 different places. I get confused about what corrections I submit. sorry
*September 8, 2011*

**science**

13.333333
*May 19, 2011*

**algebra II**

Find the payment necessary to amortize the loan. 11) $ 1500; 6% compounded annually; 7 annual payments 11) _____ A) $ 271.33 B) $ 241.55 C) $ 305.05 D) $ 268.70
*March 27, 2011*

**Physics**

The first one is the diagram, the image is yuer365.info/pictures/4 Diagram.jpg Sorry that I have to post image as the question is based on the diagram. Thank you!
*February 27, 2011*

**Physics**

Physics question on identify the reaction? I am having trouble with the question a, b, and c in this physics problem: One or more external forces are exerted on each object enclosed in a dashed box shown in the figure below. Identify the reaction to each of these forces. (...
*February 27, 2011*

**algebra**

on three consecutive passes a football team gains 7 yards, loses 22 yards, and gains 33 yards, what number represents total yardage?
*February 9, 2011*

**math**

log
*January 31, 2011*

**calculus**

Find the dimensions of a right circular cone, that holds one liter and is made with a minimum amount of sheet metal. It is open on the top.
*December 15, 2010*

**Physics**

If given the ratio of temperatures in Celsius to Kelvin for Gold to silver as 1.10614 to 1.08265. How can I find the temperatures of each individual element form just this information?
*December 8, 2010*

**Chemistery**

How much heat is contained in 4 liter of liquid methanol (CH2OH) when it is completely combusted (excess oxygen) to form carbon dioxide and water. the density of metanol is 0.7918 g/ml.
*October 30, 2010*

**math**

x 0 0.2 0.4 0.6 0.8 1 1.2 f(x) -2 4.16 4.32 4.48 4.64 7.8 7.96 estimate of f′′(0.6).
*October 8, 2010*

**math**

The population of bacteria in one cubic centimeter of the blood of a sick person has been modeled by the function P(t) = 115 t(0.88^t) where t is the time, in days, since the person became ill. Estimate how fast the population is changing 14 days after the onset of the illness...
*October 6, 2010*

**Chemistry**

Thank you so much. That makes more sense. I had in 85, not 15.
*July 17, 2010*

**Chemistry**

A reaction is first order and it takes 324 minutes for the reaction to be 50.0% complete. How long will it take for the reaction to be 85.0% complete at the same temperature? 2. N2O5 decomposes to N2O4 and O2 and the reaction is first order in N2O5 with a specific rate ...
*July 17, 2010*

**sociolgy**

It has been said that modernization theory assomes that in backward areas modernity-inhibiting characteristics are dominant. This suggests that the effects of international factors and positive of traditional culture have no bearing on the lack of modernization. Defend or ...
*December 18, 2009*

**Math**

How do I write each of the factors as multiples of 10 or 100, group them so the multiples of 10 are together and determine the final product?
*November 22, 2009*

**child development and human behavior**

1/c 2/c 3/ab 4/a 5/c 6/d 7/d 8/a 9/b 10/a 11/a 12/b 13/c 14/d 15/a 16/b 17/a 18/c 19/a 20/a 100% Right
*October 20, 2009*

**FINANCE II**

THE EXTENT TO WHICH INVENTORY FINANCING MAY BE USED DEPENDS ON?
*October 6, 2009*

**math word problems**

A ladder is leaning against a building. The distance from the bottom of the ladder to the building is 9 ft less than the length of the ladder.how high up the side of the building is the top of the ladder if that distance is 2 ft less than the length of the ladder? the ladder ...
*August 1, 2009*

**muet**

summary about parental guidance and home enviromen are the key to a childs academic excellence
*July 11, 2009*

**muet**

summary about parental guidance and home enviromen are the key to a childs academic excellence
*July 11, 2009*

**english**

summary about Parental guidance and home enviroment and the key to a dhilds academic axcellence.
*July 11, 2009*

**economics**

It doesnt give educational background or family matters or skills. it says that she is white and she is in a management position. but i find it hard to believe that she is only 21 with 1 year of work experience and she is in management already.
*June 7, 2009*

**economics**

Is it possible for a female only 21 years old and 1 year of work experience to have an income of $92560 US in the 1980s?
*June 7, 2009*

**math help please**

if the product of two whole numbers is zero, then one of the factors is zero. To what axiom does this refer? I am unsure of the answer dealing wth axiom but im thinking it would possibly be the non zero divisor?? I dont know if im right
*April 16, 2009*

**SKILLS FOR THE EFFECTIVE TEACHER AIDE**

1/b 2/a 3/b 4/b 5/a 6/a 7/a 8/c 9/c 10/b 11/a 12/c 13/b 14/d 15/c 16/b 17/b 18/a 19/c 20/d I just got 100% on this exam
*January 9, 2009*

**English**

Which of the following statements is true of a summary? 1. A summary condenses the main points of an article. 2. A summary is quicker and easier to write than a longer original article. 3. A summary should not include evaluation and criticism. 4. A summary should direct the ...
*October 21, 2008*

**English**

When applicable, entries on an MLA Works Cited page must include all the following except: 1. author, title of article, title of periodical in which the article was published. 2. date of publication, volume and issue number of periodical, page numbers. 3. city of publication, ...
*October 21, 2008*

**English**

What does voice refer to in a sentence? What does tense refer to?
*October 9, 2008*

**English**

What does it mean to vary the sentence pattern within a written work?
*October 9, 2008*

**English**

Explain how reading, critical thinking, and writing relate to one another.
*October 9, 2008*

**English**

are you asking or telling?
*October 9, 2008*

**English**

What do you believe differentiates academic writing from other types of writing?
*October 9, 2008*

**data**

A die is thrown 20 times and a sucess is defined as on or a six on the upace of the die,. Use binomial distribution to determine the probability of getting exactly 5 successions in 20 trials
*October 8, 2008*

**data**

I dont understand how to do it, there are no examples in my book
*October 8, 2008*

**12 data**

I took 100 and - 10 bags because they were taking them as a sample= 90 then there is one bag that doesnt meet requirements to it would be 89. but once i got here if this is even right i dnt know what to do
*October 8, 2008*

**12 data management**

I am unsure out the mattrix. for he ball being thrown back to her i thought it woud be 1/5
*October 8, 2008*

**social studies**

thank you, but I still have no idea how to do a visual presentation??
*September 17, 2008*

**social studies**

Not much - it was a policy that US remain uninvolved in others wars..
*September 17, 2008*

**social studies**

how would you suggest making a visual presentation to explain moral diplomacy
*September 17, 2008*

**social studies**

moral diplomacy is considered a policy and I am trying to find out the pros, cons, perspective of other countries to determine the success of the policy as well as a deep understanding of the policy, who created it, when and where. Can you direct me???
*September 17, 2008*

**social studies**

Imperialism - foreign policy assessment of big stick, panama canal, dollar, moral and open door policies - regarding moral policy where is information about the policy, who created it, when and where it was applied, etc. I cannot find information regarding a moral policy
*September 17, 2008*

**French**

La santé des jeunes gens n'est pas comparable aux jeunes de nos jours. Actuellement, les jeunes aiment miex rester dans la maison, jouer aux vidéojeux, regarder la télévision toute la journée au lieu de faire des sports du dehors. il y a ...
*April 27, 2008*

**French**

thank you so much Christiaan and SraJMcGin!:-D!yes, i have corrected my essay and i am retyping it now. yeah, when i write french essays, i always tend to draft out an english version of it first if i have time. i just don't feel confident enough to write in French at ...
*April 27, 2008*

**French**

Hello, can someone please proof-read this for me? thanks. sigh,i can do the exercises in the grammar workbooks but when it comes to writting passages like this...i make so many mistakes it is not funny... could someone please point out the mistakes? thankyou! La santé ...
*April 27, 2008*

**French**

P.S: i am not so sure about the [modifying the subject "les phares" ] that you have mentioned. could you please explain it to me? or could you tell me which section i should look at, for the explaination of this in a grammar book?thanks
*April 27, 2008*

**French**

thanks!this is fine, i can correct it and read through it again. thankyou so much!
*April 27, 2008*

**French**

hi there, could anyone please proof-read this for me? many thanks! il y a cinq ans que j'ai vu un accident. il faisait beau, et ma parents et moi allions du supermarché. Ma père conduisait. Quand nous passé le feux de signalisation, nous avons voyions ...
*April 27, 2008*