Thursday
October 30, 2014

Search: First estimate the answer. Then multiply to find the exact answer 9 9/2* 4 5/6

Number of results: 114,453

Algebra
If a computer costs an electronics dealer $300, and she sells them for $800, what is her rate of profit based on the selling price? I know the answer is 62.5% but could someone show me how to get this answer , thanks
September 19, 2010 by Mark

Chemistry
Calculate the cell emf (in volts) for the following reaction at 25°C: Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M) [Enter only the number of your answer.] Answer
November 15, 2010 by Diana

calculus
Evaluate the integral by interpreting it in terms of areas. int_(0)^(9) (7/2x - 21)dx can someone please help me with this question i keep on getting the wrong answer...the answer i got was -324/4
November 19, 2010 by eddy

Calculus
Can someone give a detailed solution to this integration problem? ∫ dx /(3(1 - x^2 ) - (5 + 4x)√(1 - x^2)) this symbol √ is square root The answer is ( I need the steps and/or u-substitution used to arrive at this answer ) (2√(1 + x)/(3√(1 + x) - √(1 - x ))
December 30, 2010 by Carol

Chemistry
How many moles of helium are contained in a 5.00-L canister at 101 kPa and 30.0 degrees Celsius? I don't understand how to get the answer. My teacher didn't explain the work she just gave me the answer.
March 9, 2011 by Walker

6th grade math
Is there a quick way to get the answer to this problem without doing a calculation of each possible answer. These numbers are arranged from greatest to least. Which value is next. F) 1/2 G) 0.58 H) 6/8 J) 0.65
April 23, 2011 by Suzanne

Calc
Use the Intermediate Value Theorem to check whether the equation x^3–3x+2.1=0 has a root in the interval (0,1) answer: yes or no ? i have no idea how to answer to go about solving this question, thanks for the help!
January 25, 2012 by UCI STUDENT

Cardiovascular Respirtory
Which one of the following words means "the surgical repair of the larynx? A.Laryngectomy B.laryngostomy C.Larynoplasty D. Laryngostenosis My answer is (A) can someone check my answer
April 19, 2012 by Brenna

Cardiovalscular
Phonology refers to the science which treats A. vocal sounds B. heart rhymths C.nutrional deficiencies D. blood disorders my answer is (C) can someone check my answer
April 22, 2012 by Brenna

Spanish
If i knew the answer i wouldnt be asking the question! Is it a bat, bull. If nobody knows the answer just say instead of keep saying ive not dun it properly
July 30, 2012 by Rebecca macdonald

math
Which of the values is in the solution set for the inequality -8-7x>6 It is multiple choice A=-1 b=-2 c=-3 d=2 I did this: -8-7x>6 add 8 to each side -7x>14 -7/-7>14/-7 x<-2 since it is less then -2 should the answer be c=-3 The way they ask the question I am ...
January 4, 2013 by b6

Math
Can you arrange the numerals 1 to 9 (1, 2, 3, 4, 5, 6, 7, 8 and 9) in a single fraction that equals exactly 1/3 (one third)? Could someone explain how you get the answer to the problem, please don't just say the answer!
March 12, 2013 by Janey

chemistry
What will be the average density for a sample of metal with a mass of 12.6 g and volume calculations of 7.8 mL and 8.3 cm3 ? Omit units in the answer and report answer to one decimal place.
January 22, 2014 by Andrea

chemistry
What will be the average density for a sample of metal with a mass of 12.6 g and volume calculations of 7.8 mL and 8.3 cm3 ? Omit units in the answer and report answer to one decimal place.
January 22, 2014 by Andrea

Physics
1 g/cm^3 = _________ kg/m^3 I tried converting g to kg and then cm to m, and then dividing. I get the answer 1x10^(-1). When I type in this problem on the internet, many sources say it is 1000. I am very confused as to how this answer was reached.
July 13, 2014 by Anya

science
Wow, you make me stay here for nearly an hour to wait for you to answer a question. Thanks. By the way, don't say how you didn't know the answer, you could have informed me of that 50min earlier.
September 18, 2014 by tom

Chemistry
If I used 24.6 g of of 0.83 M HC2H3O2 (aq) (0.83 mol per 1 L of solution), how much carbon dioxide would be produced? (IT IS ASSUMED YOUR ANSWER IS IN L CO2 so you do not need to include that in your answer.)
October 25, 2014 by Ali

Astronomy
The volume of a ball is given in terms of its radius by V=4π3R3. Use this to find the average density of Saturn, i.e. the mass per unit volume. Use Earth’s mass in kg from the Table of Constants to express your answer in kgm3. Note for comparison that water has a density ...
December 23, 2012 by sam

Biology
a. Identify each statement as an observation, hypothesis, or prediction. b. Are the groups of statements below examples of an inductive or deductive process. 1. Male red -winged blackbirds display red wing patches to signal superior to other males. Answer: Hypothesis/deductive...
July 4, 2009 by Mike

math,correction,plz
can someone correct these for me plz. Simplify by combining like terms. Problem#32 radical(63) minus 2radical(28) plus 5radical(7) My answer: 4radical(7) Find the perimeter of the triangle shown in the figure. leg...1 = radical (5) + radical (3) leg...2=radical (5) - radical (...
March 10, 2007 by jas20

Algebra Sq Rt
I have a sq rt sign with a 3 on the left side. That means I'm looking for the cube of the number inside the square root? That number is 189xto the 8th power. So I multiply 189x 8 times before I find the cube or do I find the cube of 189?
February 2, 2008 by Micah

Pre Cal
Find the exact value of the cosine and the cosecant of thetha, if thetha terminates in quadrant II and sin theta = 4/5
December 23, 2009 by Jamie

Maths - trig
Solve 3cos2x - 7cosx = 0, when 0<=x<=360 And also, find the exact values for x when 0<=x<=360 if 3tan^2x=1 Thankyou!
October 3, 2010 by Rose

Trig
If the terminal side of theta in standard position contains the point (5,8). Find the exact value of tan of theta
March 10, 2011 by Mark

calculus
f(x)=e^x-x (a) at what x-values does f have relative extrema? (b) find the exact value of -1 to 1 on an interval f(x)dx. (c) show that f does not have any inflection points.
February 19, 2012 by Cleondra

Chemistry
Given 2 moles of NaCl, find the number of moles of Na. If you could show me the exact steps, that would be much appreciated.
September 21, 2012 by Ely

math need help urgent
find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1
November 27, 2012 by zach w

math need help urgent
find the domain f(x)=x/x-8,g(x)=-7/x solve the following exponential equation equation exact answers only 3e x-1 = 2+e^x-1
November 27, 2012 by zach w

Matthew
Given θ = arcsin (tan45°) find the exact degree measure of θ without usiing calculator.
December 4, 2012 by TRIGONOMETRY

Grammar
Choose the best answer. 1. (Your, You're) never going to let him borrow your tools again. Answer: You're ( You are never going to ... 2. (They're, Their) children (are, is) a shining example of (they're, their) belief system. Answer: Their children are a shining example of ...
May 13, 2011 by Leslie

Social studies?
Please ignore my previous post. I prematurely hit the enter key. I've been watching this board all day, waiting for someone to answer my physics question (no one has yet. sigh.) I just have to say Ms. Sue is my hero. She consistently answers almost every student's questions, ...
August 15, 2007 by Anastasia Beaverhausen

Calculus
A tree grows 2.80 m during the first year since it was planted. During each subsequent year the tree's growth is 85% of its growth the previous year. a) Calculate to the nearest 0.001m, the growth of the tree in the fourth year. Tn = ar^n-1 T4 = 2.80(0.85)^10-1 T4 = 2450 I ...
September 21, 2011 by Anonymous

Public Speaking Please Check
1. (TCO1) The route used to transmit messages is known as: my answer:decoding encoding decoding feedback noise channel 2. (TCO1) As Claire tells about her trip to the museum, she notices Emma and Brian yawning. The information that Claire is receiving is known as: My answer: ...
January 10, 2010 by Bryan

Psychology
It is difficult to predict when a slot machine will payoff. Sometimes it takes 200 pulls, sometimes 500, sometimes 1,000 or more. Since you know it must payoff sometime, you keep plugging in the coins. Slot machines like this are set up on: A. Fixed-ratio schedule of ...
November 29, 2009 by Hannah

Art
For this question it asks, what types of material changes were made in building Greek temples and what effect this had on the architectural world. In my book, It says how the earliest Greek temples were made of wood or brick, which later changed to marble and limestone. So i ...
May 10, 2012 by Bella

computers
Using the operator precedence that excel 2007 follows,which calculation wuld be perfomed first from the following equation?119+7*3/(8-6)-4/2 a)119+7 b)7*3 c)8-6 d)4/2 is a) correct answer thank you
September 1, 2011 by vedrana

Math
A cab charges $2.95 for the first 1/4 mi and charges $0.65 for every additional 1/4 mi or apart thereof. What is a possible distance a customer can travel with $67.20? Express the answer to 1 decimal place.
February 16, 2012 by Rose

math
How many of the first 1001 Fibonacci numbers are divisible by 3? I know the correct answer is 250....... but i need solution of how it comes out to be 250........ kindly hellp me sooooooooooon
May 12, 2013 by jamesbond

math
need step by step on how you get the answer Aging in the United States In 2050, about of the population will be aged 65 or over and about 1 over 20 of the population will be aged 85 or over. Estimate the fraction of the population that will be between the ages of 65 and 85 in ...
October 25, 2011 by tony

gce further mathematics
The roots of the equation x^4 - 3x^2 + 5x - 2 = 0 are a, b, c, d. By the relation y=x^2, or otherwise, show that a^2, b^2, c^2, d^2 are the roots of the equation y^4 - 6y^3 + 5y^2 - 13y + 4 = 0. Let y = x^2 and substitute that into the x polynomial. y^2 - 3y + 5 sqrt y -2 = 0 ...
September 11, 2006 by lee

algebra
Minimum Wage: The table shows minmum wage for three different years Year 1940 1968 1997 Wage ($) 0.25 1.60 5.15 (a) Make a scatterplot of the data in the viewing rectangle [1930, 2010, 10] by [0, 6, 1] (b) Find a quadratic function given by f(x) = a(x – h )^2 + k that models ...
April 19, 2011 by jake

History
what is the term meant for "A vote on an initiative" were doing a corssword the answer as far has 10 spaces and acording to my other answers to the cross word the second and fourth letters are "e" Also... "Name of the policies supported by Woodrow Wilson" It's also a ten ...
October 20, 2009 by History

science- cell structure
An inner and an outer membrane are characteristic of which organelle? my answer: Mitochondria and chloroplasts What is the nucleus? my answer- nucleus is a cell structure that contains hereditary information What is the nucleiod? my answer: the nucleiod is like the nucleus. ...
February 4, 2012 by 12-year-old-poet

AP Chemistry
I am doing a lab on finding the molecular mass of a volatile liquid. I first need to find the volume of water in the test tube. (V= m/d) ... but how do I find the density of the water in the first place to use it in the equation? (I am not given the volume (it's what i'm ...
January 5, 2010 by Sarah

childcare
Carlos is playing in the sandbox, Thomas approaches the sandbox, observes Carlos for a moment, then knocks over the bucket Carlos has just filled with sand. Carlos pushes Thomas away saying, "Get out of here". Thomas begins to cry 1 The goal of Thomas's behavior appears to be ...
November 19, 2009 by Rosa

french
Could you check these thanks. Directions: Répondez en utilisant un pronom (en). 1. Il y a combien de chambres dans cet hôtel? (cent) Answer: Il y en a cent. 2. Il y a combien de lits dans chaque chambre? (deux) Answer: Il y en a deux 3. Il y a combien de placards dans chaque ...
October 18, 2010 by Rachel

Social Studies
Could you please check the definition that matches with the term. Here are the terms: free enterprise Economics trade-off economic models market econonmy total costs wants marginal benefit fixed costs rational choice Here are the definitions study of the production, ...
March 23, 2009 by Sam

annual salary
What is the formula to determine someone's annual salary given only the hourly wage? For example, if someone works full time for $20 per hour, how much does he earn in a year? A friend of mine told me the formula before; it's really simple. I just forgot it. Thanks! If you ...
June 13, 2006 by Leo

math
Sara had just rented her first apartment starting December 1 before beginning college in January. The apartment had washer and dryer hook-ups, so Sara wanted to buy the appliances to avoid trips to the Laundromat. The Saturday newspaper had an advertisement for a local ...
June 26, 2014 by kml

math who helps me step by step
A mixture of pure k2cr207 and pure kmn04 weighing 0.561g was treated with excess of ki in acidic medium. iodine liberated required 100ml of 0.15M of sodium thiosulphate solution for exact oxidation. The right answer k2cr207 43.67% kmn04 56.33% K2cr207 =294 kmn04 = 158 x/294 + ...
January 1, 2014 by Fai

math
how do you write an equation and state what the variable n represnts. 54 -n- =24 If you're writing an equation where you need to state what the variable is, then you need to end up with an equation where n is the only thing on one side of the equal sign. Take your equation: I ...
October 4, 2006 by julie

Chem 30
1) Suppose the mass of the NaOH used in a reaction was doubled. What would you expect to happen to the heat given off by the reaction? Explain your answer. 2)Again, suppose the mass of the NaOH used in a reaction was doubled. What would you expect to happen to the heat given ...
January 3, 2012 by Brett

Math (Please help)
you need to make 20ml of a 20% glucose solution. I need to calculate the amount of glucose and water needed. I know that the M.W is 180.16 for glucose. Would I multiply 20ml times 20 percent first? Thank you!
March 26, 2013 by Anonymous

statistics
Estimate the tenure of someone that could have $5.8($k) and 15 years of job satisfaction. Make sure to state your multiple regression equation in your example. What are some of things that you can estimate from the model? How effective is evaluating the R-squared of the model...
May 30, 2013 by Kathryn

physics
Suppose that the displacement of a particle is related to time according to the expression delta x = ct^3. What are the SI units of the proportionality constant c? My answer: delta x = ct^3 m = c s^3 (s: seconds) m/s^3= c The SI units for c: m/s^3 correct? 2) Determine if ...
January 15, 2007 by galileo

physics
when i calculate the density from my measurement,mass=154.4, volume=175.00,and got 0.8823 g/cmexp3 as the answer,so do i have to express the answer in scientific notation or round off it? No, you do not need to express the answer in scientific notation unless the problem asks ...
September 17, 2006 by Katrina

Math
Find the probability of: a) Rolling a three OR a six with a single die Answer: P(3 U 6)= n(3U6)/n(S) = 3+6/6 = 9/6 reduced: 3/ b) Dealing an ACE OR a FACE CARD from a standard deck Answer: P(A U F)= 4/52 + 12/52 = 4/13 2. A 5-committee is to be chosen from 4 teachers and 4 ...
March 6, 2011 by Jacob

Science
A.) A runner is jogging at a steady 6.7 km/hr. When the runner is 3 km from the finish line, a bird begins flying from the runner to the finish line at 20.1 km/hr (3 times as fast as the runner). When the bird reaches the finish line, it turns around and flies back to the ...
August 28, 2014 by Serena

Reserves-PLEASE HELP!
The Norfolk Bank has $18,000 in excess reservces and the reserve ratio is 20 percent. Which level of checkable deposits and reserves might this bank hold? a. $160,000 in checkable-deposit liabilities and $47,000 in reserves. b. $140,00 in checkable-deposit liabilities and $46,...
November 5, 2006 by Amy

7th grade math Ms. Sue ASAP please
Ms. Sue, sorry to keep bugging you with questions, but can you please check my answers? Sorry, I just want to get my answers correct when i turn it in thanks! 8. Four students work to find an estimate for square root 37. Who is closest to finding the true estimate? (1 point) ...
October 24, 2012 by Delilah

bookkeeping
when a window is displayed in front of another window,its said to be? (a)a screen saver (b)minimized (c)the active window (d)multitasked my answer is c which of the following options is used to view a computers memory properties? (a)device manager (b)control panel (c)...
April 3, 2012 by susue

imperative sentence
Helping my son and double checking, could the following 2 sentences be considered imperative sentences? 1. Josh go to your room. 2. You better go to your room. Thanks. The first sentence, Josh, go to your room. is imperative. It's a command or request. The subject of the verb ...
October 18, 2006 by cher

Math
Is my answer and working out correct for this question? A patient requires 0.08g of codeine for pain releif. If a tablet contains 20mg of codeine, then how many of the condeine tablets would be administered to the patient? My answer: 1000mg = 1g 0.08g x 1000mg / 1g = 80mg 80...
February 25, 2011 by Nursing Student

Spanish;CHECK?
State whether the command is formal ("Ud.") or informal ("tú"). Come la sopa. Anwser: Formal Hable más despacio. Anwser: Formal No compres más ropa. Answer: Formal Beba m�s agua. Answer: Informal No vengas tarde. Answer: Informal
January 23, 2013 by Vanessa

trig
use sum or difference identities to find the exact value of the trigonometric function: tan 345 please show work, i cant figure out what im doing wrong!
November 19, 2009 by Anonymous

guilan
1-Use Taylor series expansion (degree 0 to 6) about x’=pi/4 to find an approximation for f(x) = cosx at point x=pi/3 and then compare the result with the exact data.(show the results in a table).
March 22, 2013 by payam

PHYSICS
This is the same question as last time. "A plane is flying 25 degrees north of west at 190 km/h and encounters a wind from 15 degrees north of east at 45 km/h. What is the planes new velocity with respect to the ground in standard position?" Elena kindly gave me this afterward...
February 18, 2013 by Matt, AGAIN

math
in a triangle, the measure of the first angle is twice the measure of the second.the measure of a third triangle is 64 degrees more than athe measure of the second angle. Use the facts that the sum of the measures of the three angles of a triangle is 180 degrees to find the ...
March 13, 2013 by brittany

5th grade math (word problems)
sorry,but I don't understand word problems - like what formula/expression to use. Here's the 1st problem: Rob practiced 3/5 of his music in 25minutes. About how long does it take to practice all of his music? I know that Rob has 2/5 left of music to practice. So, do I multiply...
December 11, 2012 by Alex

geometry
The diameter of circle C is 18 cm. is 60°. Use this information, the diagram, and your experiences in geometry this semester to answer these questions. (Use .) a) Find . Explain. b) Find . Explain. c) Find . Explain. d) Find the length L of . Show your work.
June 1, 2010 by Anonymous

maths permutation & combination - answer pls check
Your password for a given website is made up of three letters followed by four numbers. Find the number of possible passwords if there are no restrictions on what three letters and what four numbers can be used. Pls check if my answer is correct 26C3*10C4 =26!/(26-3)!3! . 10...
April 13, 2008 by matt

Math help
(a) A street guide for Belfast has a scale of 1:15 000. A walkway through the city is 2.4 km long. Find the length of the walkway on the map. Give your answer in centimetres. (b) Ormeau Park in Belfast has an area of about 25 cm2 on the same map. Calculate the area of the park...
May 22, 2010 by JAndu Andu

math
(a) A street guide for Belfast has a scale of 1:15 000. A walkway through the city is 2.4 km long. Find the length of the walkway on the map. Give your answer in centimetres. (b) Ormeau Park in Belfast has an area of about 25 cm2 on the same map. Calculate the area of the park...
June 10, 2010 by Kheladi Nep

Math
The price for 2 tickets with online service charges, large popcorn and 2 medium soft drinks at a sample of 6 theater chains: $36.15, $31.00, $35.05, $40.25, $33.75, $43.00 a) Construct a 95% confidence interval estimate for the population mean the price for 2 tickets with ...
November 1, 2009 by Anonymous

Physic
A vacuum pump is connected to its electric motor by a belt drive (Fig. 9-40, not to scale). The motor rotates at a rate of 1000 rev/min and the diameter of the motor shaft is 2.9 cm. How large (diameter) should the pulley be if it is designed for a speed of 31 rev/s? (Answer: ...
May 1, 2014 by Anonymous

Math Help Please!
My investment in Edgewater stocks is losing half its value every 2 years. Find and interpret the associated decay rate. If I use the formula y=100(1/2)^x (<-- Is that correct?) I got the answer of 0% (its wrong), I used a different formula, which should be wrong and got the...
February 29, 2012 by Amie

SraJMcGin spanish HELP
RESPONDE a estas preguntas con una condicion. PLEASE REVIEW MY ANSWERS 1. Que vas a hacer este verano? Si My answer= voy a viaja. 2. Que vas a regalarle a tu mejor amigo por su compleanos? Si My answer voy regalare una canta 3. No estas muy contendo con tu trabajo, no? Si My ...
April 24, 2009 by sam

Algerbra1
1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a.What ...
November 16, 2011 by Connie

Social Studies
Which dynasty may be the first real dynasty but there is no proof that it existed? I think the answer is Pharanic dynasty. Is this correct???
April 8, 2008 by Taylor

Help Please
Help to solve this 1/2 (3g-2) = g/6 nevermind I was missing a bracket in the solution. multiply both sides by 2 This gives 3g-2=g/3 now cross multiply to get 9g-6=g now add a -g to both sides and +6 to both sides. g=3/4
October 24, 2006 by Confused

Calculus c
Let f be a twice-differentiable function defined on the interval -1.2 less than or equal to x less than or equal to 3.2 with f(1)=2. The graph of f', the derivative of f, is shown on the right. The graph of f' crosses the x-axis at x=-1 and x=3 and has a horizontal tangent at ...
December 19, 2012 by Madeline

calculus please help
the actual problem is integral(2 to +infinity) (1/x^2) dx and after integrating and plugging in the bounds, i got -1/(infinity sign)+ 1/2 does that converge to 1/2, Ln2, 1, 2 or is the answer nonexistent? what i was thinking that everytime the bottom number increases seeing ...
April 24, 2007 by Anonymous

Biology
Please check my answer: Which of the following statement is not true? 1). Mitosis produces new nuclei with exactly the same chromosomal endowment as the parent nucleus. 2). Mitosis may occur without cytokinesis 3). Mitosis and cytokinesis are required for asexual reproduction...
October 24, 2007 by Gulzaman

AP Stats
The distribution of heights of adult American men is approximately normal with mean 69 inches and standard deviation 2.5 inches. Use the 68-95-99.7 rule to answer the following questions: (d) A height of 71.5 inches corresponds to what percentile of adult male American heights...
September 14, 2010 by Emily

HISTORY- Check my answer!
Check my answer and if it is not right, what is it?: How did China become a communist nation? The communists were elected. The communists gained control after a long civil war. The communists gained control in a swift coup d’état. The emperor appointed a communist prime ...
February 4, 2011 by Heather

Spherical Trigonometery
I am trying to apply the formula cos c = cos a x cos b + sin a x sin b x cos C to find the length of c in my spherical triangle. I am working with 2 examples in a book in which the answers are given. In the first example all the sines & cosines calculated are positive and I ...
January 15, 2008 by Mike

math who helps me step by step
A mixture of pure k2cr207 and pure kmn04 weighing 0.561g was treated with excess of ki in acidic medium. Iodine liberated required 100ml of 0.15M of sodium thiosulphate solution for exact oxidation. The right answer 43.67 k2cr207 and 56.33 kmn04 My calculation 0.1L x 0.15M = 0...
January 4, 2014 by Fai

History
Hi I need some help with my history homework I have answer all of the question I just need help with a few about the Sumerian civilization. I just want to get some idea so that I can research these topics better. 1.Type of Governmen- I just some general info here 2.Economic ...
May 26, 2011 by Traveling Girl

maths
Using the fitted regression model, estimate the average change in cry time for infants with severe pain versus those without severe pain, holding group constant. Provide a 95% confidence interval for this estimate.
January 18, 2013 by umer

statistics
Using the fitted regression model, estimate the average change in cry time for infants with severe pain versus those without severe pain, holding group constant. Provide a 95% confidence interval for this estimate
January 19, 2013 by laura

French
Could you please check these thanks. Part 1 Directions: Choose the right word with the right statement. Word Bank A. donner B. téléphoner C. mettre D. décrocher E. commposer 1. ------ le numéro Answer: E 2. ----- le téléphoner Answer: D 3. ------- un coup de fil Answer: A 4...
February 9, 2010 by Kesha

chemistry
i am given equation CH3COOH + NaOH ---> NaCH3COO + H2O 25ml of acetic acid solution 0.025L 12ml of mid point of titration 1mol of NaOH find molar concentration i use a balanced equation it's a 1:1 ratio finding NaOH molarity = mols/litre = mols/L molarity= 1mol NaOH/0.012 ...
April 12, 2008 by unknown

chem
so i posted this question yesturday and got some help. which is the stuff below. can you look at the last thing i said which was the answer i got by doing what DrBob222 said to do and tell me if its correct.(the question is the first section) thanks chem - hannah, A salt ...
November 10, 2010 by hannah

7th Grade Math
What is the radius of a CD in cm? What\'s the height of a CD cm? What\'s the volume of the CD? What\'s the measure of the radius in the center of the CD to the beginning of the music area and the volume of it? Subtract the answer from Part D from your answer in Part C and find...
February 25, 2012 by Anonymous

Math
Choose the equation of a line that is parallel to y = 3x - 2 and passes through the point (-1,-6). y = 3x + 3 y = 3x - 3 y = (-1/3)x + 19/3 y = (-1/3)x - 19/3 *i think it's the last one! The slope must be 3. That is the "m" term in the form y = m x + b So the correct answer ...
November 7, 2006 by Francheska

Statistics
Suppose the U.S. president wants an estimate of the proportion of the population who support his current policy toward revisions in the Social Security system. The president wants the estimate to be within 0.028 of the true proportion. Assume a 99 percent level of confidence. ...
March 31, 2013 by Adam Dane

Algebra 2 ..
Please explain on how to do each of these! *Let (x) be defined for all positive integer values of xas the product of all even factors of 4x. For example, (3)=12x6x4x2=576. What is the value of (5)? Someone says that it is f(5)= 20x10x2x4=1600 I DO NOT GET HOW THEY ARRIVED THAT...
March 28, 2013 by Anonymous

math
Roberto is an employee of a store and receives 20% discount off all items in the store. During a sale, the price of a jacket is reduced by $15. Roberto will receive both his 20% discount and the $15 off. Which is better for Roberto, to take the 20% discount first and then ...
March 16, 2011 by anonymous

Stats Anyone?
The first-year retention rate is the percentage of entering freshman at a given college who return to that same college for their sophomore year. Many colleges use the first-year retention rate as one measure of their quality. Suppose that the first-year retention rate at a ...
October 28, 2009 by CM

QUOTATION MARKS
1.Which of the following is one reason to use quotation marks in a sentence? to show you have used someone’s exact words in your paper and the quote is under four lines to mark an indirect quote to show paraphrased information you borrowed from a source to mark a quote of ...
April 27, 2010 by christopher

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