Wednesday
August 20, 2014

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

Number of results: 110,359

Office Management
One taxicab charges 75 cents for the first quarter-mile and 15 cents for each additional mile. The competing taxi company charges $1.00 for the first quarter-mile and 10 cents for each additional mile. 1. what distance would produce the same fare for the two taxi companies? 2...
February 17, 2011 by sandra

math
The corrosive effects of various soils on coated and uncoated steel pipe was tested by using a dependent sampling plan. The data collected are summarized below, where d is the amount of corrosion on the coated portion subtracted from the amount of corrosion on the uncoated ...
June 25, 2013 by tracy10

Physics
An object with a mass of 3.09x10^0 kg is subjected to a force of 8.8505x10^2 N directed at an angle of 1.6968x10^2 degrees from the x axis. A second force of 2.98725x10^3 N acting in the negative Y directions is also applied to the object. To two significant figures what is ...
October 18, 2010 by peter

Math
Simplify: 3/5 x 13.65 - 2/9 x 1.307 When I work this problem I get: 7.899555556 _ Would that be: 7.89 (or) _ 7.8995 The answer depends upon the order of operations, which must be clarified with parentheses and brackets. What you calculated is [(3/5) x 13.65)] - [(2/9) x 1.307...
February 24, 2007 by Rachel

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
A 10 kg block sits on a flat surface whose μs=0.60 and whose μk is 0.40 a. What horizontal force is required to get the block move? b.If we continue to apply the same force as in part a. what will the blocks acceleration be? In the answer: force=.6*mg to move net ...
August 26, 2012 by Lianne

Accounting
If Department H had 600 units, 60% completed, in process at the beginning of the period, 8,000 units were completed during the period, and 500 units were 30% completed at the end of the period, what was the number of equivalent units of production for the period if the first-...
June 30, 2013 by Anonymous

calculus
consider the function f(x)= x^2/4 -6 Rn is the Riemann sum where the sample points are chosen to be the right-hand endpoints of each sub-interval. Calculate Rn for f(x)= x^2/4 -6 on the interval [0,4] and write your answer as a function of n without any summation signs. Rn= ? ...
November 30, 2006 by amanda

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

Physics
Hello recently I was asked to find the time it takes a satalite that is geocentric (that always stays above the same exact spot of the earth) so... I was given the radius of 61 earth radius or simply 3.89 E 6 m mass of earth what G equals and have to use Newtons law of ...
May 7, 2009 by Physics

physics
A model rocket is launched straight upward with an initial speed of 51.6 m/s. It accelerates with a constant upward acceleration of 1.96 m/s2 until its engines stop at an altitude of 230 m. What is the maximum height reached by the rocket? The acceleration of gravity is 9.81 m...
October 12, 2011 by a

Chemistry
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will decrease C)dE...
March 23, 2010 by Val

chemistry
1)) The following two half-cells are paired up in a voltaic cell. How will lowering the pH affect the E of the overall cell? ClO3-(aq) + H2O(l) + 2e- ==> ClO2-(aq) + 2OH-(aq) Eo= 0.35 V I2(S) + 2e-==> 2I-(aq) Eo = 0.54 V A)dE will increase B)dE will decrease C)...
March 23, 2010 by Val

Science
1. A girl on a playground swing makes a complete to-and-fro swing each 2 seconds. The frequency of swing is 1. (0.5 hertz) 2. (1hertz) (ANSWER) 3. (2 hertz) And the period is (FROM THE QUESTION BEFORE) 1. (0.5 seconds) (ANSWER) 2. (1 second) 3. (2 seconds) 2. The period of a ...
January 23, 2010 by Sam

Microeconomics (margin Utility) need clarification
Someone was kind enough to help me with this question, but i was still confused on how they helped me with the first part of my question. The original question was: You go to an auction and set a maximum price of $100 you are willing to bid on an item. However, you are ...
October 15, 2008 by David

microeconomics
Do you think that a firm always pays the lowest wages they can? Why/why not? Relate your answer to productivity. Which workers do you think would be the first to be laid-off in the event of a slowdown. Why?
October 14, 2011 by Timica

7th Grade Language Arts~!!!
What was the first South American nation to receive independence? (1 point) Chile Argentina Paraguay Brazil My Answer: 1) Argentina Is this correct?
April 2, 2013 by Gabby

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

Social Studies (URGENT)
Pleae help. It's urgent! 10. Why did many Native people start adapting to Victorian society? a.) Was this the only way that things could have gone between the Natives and the colonists? Explain your response. b.) Why didn't the settlers adapt to Native customs and traditions? ...
February 15, 2010 by John

Physics
The work function for potassium is 2.24eV. If potassium metal is illuminated with light of wavelength 310 nm, find the maximum kinetic energy of the photoelectrons. I have tried everything and still keep getting the wrong answer. The speed of light is 3 × 108 and Planck’s ...
April 13, 2010 by Emily

Algebra
1.The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=6000/200-2x. a.What is the cost to remove 75% of the pollutant? Answer: $30.2 million dollars b.What is the cost to remove 90 % of the pollutant? Answer: $30.27 million dollars c.What is the ...
January 31, 2008 by Bretagne

basic geometric
a would like to get someone too help me with these math problem. Two angles of a triangle are 40 degrees and 62 degrees; what is the third angle's measur? The angles of a triangle always adds to 180o. You know two of the angles, solve for the third. can you please explained to...
March 11, 2007 by vero

civics
I couldn't not find the answer to this in my book. The county form of local government is found in a. about half the states, b. all but two states, c.only 2 states, d. fewer then half of the states. I am guessing that since my book says " over the past century, the role of ...
April 26, 2010 by Tiffany

5 Pre-Calculus Questions
1. What is the value of x in the right triangle below? If needed, round your answer to two decimal places. 32 angle, 15 inches, find the x in base… 2. A 10-foot ladder is leaning up against the side of a building so that the top of the ladder reaches the top of the building. ...
June 30, 2011 by Anonymous

French
Can you please check these Choose A. Le caissier m'a donné 200 euros en liquide. B. Je suis toujours fauché. C. Le caissier m'a donné 10 billets de dix. D. J'aime mettre de l'argent de côté. 1. -------- J'ai touché un chèque de 200 euros. Answer: A 2. -------- J'ai changé un ...
March 15, 2010 by Vanessa

CHEM Help!
My homework is about translating word equations and I need help in answering this question. Sodium phosphate reacts with calcium nitrate to produce sodium nitrate and calcium phosphate. What would be the answer? I also need help with this other question because it is kind of ...
March 11, 2008 by Anony

8th grade math
The following pattern continues indefinitely. REPEATREPEATREPEAT… 1) What is the 38th letter in the pattern? Explain your answer. 2) What is the 40th letter in the pattern? Explain your answer. 3) What is the 604th letter in the pattern? Explain your answer.
March 3, 2011 by anonymus

Maths!
There has just been a planetary alignment of five planets in the system Blogg, all the astrologers have gone loopy, and they want to know when the next occurance of these five planets will happen again. Krypton the nearest planet to the sun takes 6 days to orbit the sun. Zenon...
June 25, 2005 by -=-=-=-=-=-=-=-=-=-=-

chemistry
Please let me know if my answer to the following question is correct. Question: 25 mL of standardized 0.45 mol/L NaOH is titrated with 21 mL of 0.35 mol/L acetic acid. Calculate the pH of the solution. Answer: Add 25 mL and 21 mL to get 46 mL. Add 0.45 mol/L and 0.35 mol/L to ...
April 15, 2008 by Abigail

probability
3. A bag contains five different lightbulbs. The bulbs are the same size but each has a different wattage. If you select three bulbs at a random,how many different outcomes will be in the sample space if the bulbs are selected without replacement? I understand there is 5 ...
July 15, 2012 by bria

Chemistry
How would you prepare 2.5 L of a 0.05 M solution of iron (III) chloride using iron (III) chloride hexahydrate Since 1 mol iron(III)chloride hexahydrate contains 1 mol iron(III) chloride, use the molar mass of the hexahydrate. M x L = grams/molar mass Solve for grams. In ...
May 2, 2007 by MEl

English
1. Use tips to answer the questions with your partner. (What is the meanig of 'tip'?) 2. What is the reading about? What is the reading text about? (Which one is correct? Are both OK?) 3. What year are you in? I am in my first year in London Middle school. I am in my first ...
March 9, 2009 by John

English-Grammar
Identify how the underlined pronoun in each sentence is being used. 18. Someone sent Ed and (me) a text from an unknown phone. direct object (my answer)indirect object 19. Mr. Simons saw Owen and (us) at the registry. (my answer)direct object indirect object 20. Show Edie and...
February 5, 2013 by Anon

Chemistry-
The question I have to answer is: If two peaks of gas chromatogram are too close, what changes in experimental conditions (factors affecting separation) could you make to separate them more effectively? Answer: I thought the answer would be the length of the column. If you ...
September 8, 2009 by Soojung

PHYSICS
Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #8: A 20 kg block of ice slides without friction down a long hill. The start ...
March 7, 2013 by Anna

Calculus
this homework is due in one hour and i have no idea how to answer these questions. 1. A car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 20 ft/s^2. What is the distance covered before the car comes to a stop? 2. A stone is ...
November 16, 2011 by Sam

Geometry
Linda has two fish tanks in the shape of rectangular prisms. Each of the sides of the second fish tank is 3 times greater than the sides of the first fish tank. If Linda fills both the fish tanks completely with water, the volume of water in the second fish tank will be Answer...
February 15, 2012 by Help me

Introduction to statistics
A researcher would like to estimate the population proportion of adults living in a certain town who have at least a high school education. No information is available about its value. How large a sample size is needed to estimate it to within 0.19 with 99% confidence? n= (...
July 17, 2014 by Elizabeth

calculus
(1 pt) The following table gives the cost and revenue, in dollars, for different production levels, q. Answer the questions below. q 0 100 200 300 400 500 600 R(q) 0 540 1080 1620 2160 2700 3240 C(q) 650 915 985 1115 1270 1870 2605 At approximately what level of production q, ...
October 12, 2010 by nik

Math
Did I do this problem correctly? Solve the following system by first handling the equation of the two lines: x=(0, 2) y=(-2, 1) x=(0, -1) y=(-3, -2) Equation 1: y= -x1 Equation 2: y=4x/3+2T Is this the correct answer?
September 18, 2009 by B.B.

math!
Swan Furnace Cleaners wants to add 0.50% to the effective rate of interest on its credit card. If it currently charges a nominal rate of 4.25% compounded semi-annually, at what value should it set the new nominal rate? The answer for this question is 4.74%, the formula for ...
March 27, 2010 by Amy

Finance
Corporate bonds issued by Johnson Corporation currently yield 8.5%. Municipal bonds of equal risk currently yield 6%. At what tax rate would an investor be indifferent between these two bonds? Round your answer to two decimal places. The answer I keep coming up with is ...
February 7, 2011 by Shan

HELP MATH
Thank you for taking the time to respond. I am in the 5th grade. However word problems are a problem. On my homework sheet it says, Strategies Used.... Visual Thinking... My soloution First I... Then I... Next I... After that I... Finally I... My answer is... I think my answer...
November 16, 2009 by To: Reiny again

Trig
Using a double angle formula how would you find the exact value of this expression? Cos²105° - sin²105°
April 19, 2009 by Brian

precalculus
For the given functions f ,g , and h , find fogoh and state the exact domain of fogoh . Please show all of your work. f(x)=e^x g(x)=sqrt x h(x)=2x^2+3x-35
November 11, 2011 by tonia

Science 7R
What is the EXACT site for cell webquest because when I googled it at home I couldn't find it and went I googled it at school the other day it worked.
January 3, 2012 by Laruen

precal
For the given functions f, g, and h, find fogoh and state the exact domain of fogoh. Please show all of your work. f(x)=lnx g(x)=|x|-2 h(x)=4x-7
January 18, 2012 by Jo

geometry 2
circle K has an area of 64 pi units ^2. Find the exact length of the arc intercepted by a 210 degree central angle in circle K.
April 10, 2012 by Kate Jenson

Geometry
Given that circle Q has a radius of 42, and radii line QR and line QS form an angle of 180, find the exact length of arc RS.
April 15, 2012 by Joe

Math
Rectangle side is represented by (2,3) and (-6,4). Find the perimeter of rectangle. Do I have to find the magnitude of (2,3) and (-6,4) and square root the answer?
March 22, 2012 by Jake

Math please check answer
please check my answer thanks :) A Pet supply store recorded net sales of $423,400 for the year. The store's beginning inventory at retail was $105,850 and it's ending inventory at retial was $127,020. What would be the inventory turnover at retail, rounded to the nearset ...
November 29, 2007 by Michalea

ENGLISH GRAMMAR
KINDLY PPLEASE TO CORRECT IN GOOD GRAMMAER MY ANSWER TO THE QUSTION. CAN YOU HELP TO CREATE GOOD ANSWER. THANK YOU Q.HOES DOES MARKETING INFLUENCE US DAILY AS CONSUMER. ANSWER.MARKETING INFLUENCE US DAILY AS CONSUMER SINCE THE MANUFACTURER AND SERVICES PRODUCING THE PRODUCTS ...
March 16, 2011 by jessie

Calculus- answer check
A brand new stock is also called an initial public offering. This model predicts the percent overvaluation of a stock as R(t)=9t((t-3)^3/2.718) where is the overvaluation in percent and t is the time in months after the initial issue. Use the information provided by the first ...
May 19, 2014 by Liz

Math
Please share a strategy with me. I also added answer choices to the first problem. What is the best way to solve the following problems: Sam's family eats 4 to 6 apples every day. Which is a reasonable number of days that it will take Sam's family to eat a bag of 20 apples? ...
March 14, 2011 by Mattie

Algebra :P... again
Hi! Sorry.. but 1 more question? Direction: Find the domain of the function. Problem: y = - 1 0 / 1 1 - x [A] All real numbers except x= -11 [B] All real numbers except x= 0 [C] All real numbers except x= 10 [D] All real numbers except x= 11 Also.... if the person answering ...
August 20, 2007 by Jason

math, correction
bobpursley. i'm still questioning the problem states find the slope of any line perpendicualr to the line through points (3,3) and (2,8). y= (8-3)/(2-3) the slope i get is. (5)/(-1) for the first slope now to get any line perpendicular to the line through the same points. My ...
January 28, 2007 by Jasmine20

statistics
The data set given below has y^ = 3x - 5 for its regression equation. Find the standard error of estimate. x 3 2 5 8 y 4 1 10 19 A) 1.29 B) 0 C) 2.06 D) 0.17
March 23, 2012 by ericka

math
If alison was rounding to find how much 13 books that were 9$ apiece cost would she get a good estimate?
October 17, 2012 by Deaundre

French
Can you check this to make sure it sounds right. Directions: Your own responses (check if they sound right) Part 1 1. Tu fais un voyage en train? Tu vas où? Answer: Oui, je vais en voyage à Saint Augustin en Florida. 2. Tu arrives à la gare en avance? Answer: J'arrive à la ...
September 15, 2009 by Carrie

math
You are planning to spend no less than $6,000 and no more than $10,000 on your landscaping project. Write an inequality that demonstrates how much money you will be willing to spend on the project. Suppose you want to cover the backyard with decorative rock and plant some ...
May 31, 2008 by Anonymous

calc
how do you start this problem: integral of xe^(-2x) There are two ways: 1) Integration by parts. 2) Differentiation w.r.t. a suitably chosen parameter. Lets do 1) first. This is the "standard method", but it is often more tedious than 2) You first write the integral as: ...
May 15, 2007 by walex

Chemistry
What is the volume of 0.129 M HCl(aq) re- quired to neutralize all of the hydroxide ions in 46 mL of 0.216 M KOH(aq)? Answer in units of mL. Answer: 77.0232 What is the molarity of Cl− ions at the stoichiometric point? Answer in units of mol/L. What is the pH of the ...
March 23, 2011 by Matthew

Math! Please Check My Awnser!
Hello! I need some help with math! I have tried to do this but I am unsure about my answers. My I will identify my answers with a "<--". Also, if I have missed one, please tell me the right answer! Also, Thanks for your help in advance! Have a nice day! 1. Which of the ...
January 14, 2014 by Electro

mAth
story: Diego is building an architectural rendering of a house. For a portion of the roof, Diego cuts and folds a net for a triangular prism. the base of the prism is an isoceles triangle. the triangle has a base of 24 inches and a height of 5 inches. the distance between the ...
March 6, 2013 by MaRk

calculus
i need to find the derivative using chain rule: (x^2 + 2x - 6)^2 (1-x^3)^2 i got the answer from a site but the problem is i cannot get my work to match up with the answer, i dont know what im doing wrong. answer: 10x^9 + 36x^8 − 64x^7 − 182x^6 + 168x^5 + 80x^4 + ...
January 13, 2014 by eric

Math
Please help me with this math problem. A woman is given a loan of $20,000. for 1 year. If the instrest charged is $800, the was was the intrest rate on the loan? To get the answer I set the problem up like this: R= 800/20,000= 25(1/100)= 25/100= 25% but I know this cant be ...
May 25, 2008 by Angela

biology
A plant whose reproductive parts produce nectar is also most likely to a produce sweet-tasting fruit. b have no parts that can perform photosynthesis. c have brightly colored reproductive parts. d rely on wind pollination. e suffer significant seed loss to sugar-seeking ...
February 23, 2009 by Sarah

Algebra 1--Please, help me!
1. What are the x- and y-intercepts of the line described by 6x - 2y = 4? a. x-intercept: 2/3; y-intercept: 2 b. x-intercept: -2/3; y-intercept: 2 c. x-intercept: 2/3; y-intercept: -2 d. x-intercept: -2; y-intercept: 2/3 My answer: ? 2. Which expression is equivalent to 3m^2n/...
June 9, 2014 by Victoria

Calculus
Use the table of values to estimate ⌠6 ⎮ f(x)⋅dx ⌡0 Use three sub intervals and the (a) left endpoints, (b) right endpoints, and (c) midpoints. If f is an increasing function, how does each estimate compare with the actual value? Explain your reasoning...
November 9, 2009 by Carl

Statistics
A researcher wants to estimate the mean serum cholesterol level for college age women. In a past study the stndard devition for this measure was 42 units. If the researcher wants to be off in his estimate by no more than three units ( with 99% confidence), how large must his ...
December 7, 2010 by Marnetta

Stats
A researcher wants to estimate the mean serum cholesterol level for college age women. In a past study the standard deviation for this measure was 42 units. of the researcher wants to be off in his estimate by no more than three units (with 99% confidence) how large must his ...
May 9, 2014 by Frabkie

Law and Ethics in Med
please check my answer thanks :) Confidentiality of medical information is protected by...... 1. the US Constitution 2. no laws at all only by custom 3. none of the above My answer... I said #2
November 17, 2007 by Anonymous

math-check my work
Differentiate y=x(x4+5)3 d/dx = [x(x4+5)3] d/dx = [f(x)g(x)] = f(x)g’(x)+g(x)f’(x) d/dx = [x(x4+5)3] = x • d/dx (x4+5)3 + (x4+5)3 • d/dx x g’(x) = d/dx (x4+5)3 = 3(x4+5)2 • 4x f’(x) = d/dx (x) = 1 = (x) • 3(x4+5)2 • 4x + (x4+5)3 • 1 (factor out the common form (x4+5)2 ) = (x4+...
November 23, 2007 by Scott

Physical Science
Hello, In the following question can someone please tell me if I have the correct answer? Thank You My answer: B The Molecular Mass of Sodium Oxide (Na2O) is- A.38.98917 B.61.97894
March 6, 2008 by Mandi

algebra
I'm having trouble getting the symbols to post correctly on this page so let me try this again..... 3(7+2x) ¡Ü 30+7 (x-1) The answer to this inequality problem is x x ¡Ý-2 -2 I can't figure out how they got this answer. Can you show me the steps?
April 5, 2008 by C

Calc.
What function would have a derivative of ƒ′(x) = 12x2 + 4x − 10? Explain how you arrived at your answer...I believe the answer is this: f(x)=4x^3+2x^2-10x...and I got this using the power rule and multiplying. Thanks.
July 16, 2008 by Derek

Financing and Budget
A full-charge bookkeeper A.is a CPA B.is a tax expert C.can prepare financial statements D.must have child care experience. My answer is C. Can you check my answer.
March 4, 2009 by Cynthia

poetry
question: How do the poetic elements increase my appreciation of the highwayman ? my answer: I love all the repition and the alliteration Noyes put in this poem this one of my favorites.Is it a corrret answer?
April 20, 2009 by john

math
Evaluate. Remember the order of operations. Give your answer as a fraction in simplest terms. (-15)(6-4 divided by 2) + (-3)3rd power __________________________________ 6 / (4-11) my answer was -87/-0.85714 which does not look right. Any help is appreciated
October 30, 2009 by Pat

government
Please can you help me to answer these questions. 1. Does Britain rule itself today? I wasn't sure how to answer this since it joined the EEC in 2009. 2.Is a country ruled by another called dependent, or a colony? Many thanks for your help.
March 9, 2010 by Sam

english
can someone answer my question without sarcasm? Or even answer it? I need help writing a sentence with a linking verb. it has to be about the role of education in sucessful financial planning
June 20, 2010 by Dawn

check answer
rocket launched from a 90 meter high building, upward speed of 20 meters per second. what will it's height be after 3 seconds. given the polynomial h + vt -4.9t^2 90 +(20) (3) - 4.9 (3)^2 Is the answer 130.4 ?
July 15, 2010 by christy

Chemistry
Complete and balance each of the following equations for gas-evolution reactions. HNO3(aq) + Li2S produces ? Express your answer as a chemical equation. Identify all of the phases in your answer.
October 8, 2010 by Anonymous

chemistry-check answer
What is the wavelength (in nanometers) of light emitted from a hydrogen atom when an electron falls from the n = 2 to n = 1 orbital? I got this answer and i wanted to make sure it is right 121.7 Thank you
October 31, 2010 by Anthony

Chem
How many grams of N2 are produced when 125g of NH3 reacts by the following? 4NH3+6NO--->5N2 +6H20 I know the answer but I do not know how to do the problem. The answer in the book is 257g But what do I do? I am not even sure where to start? Thanks
October 1, 2011 by Connie

physics
A long jumper leaves the ground at an angle of 25.2 to the horizontal and at a speed of 11.2 m/s. How far does he jump? The acceleration due to gravity is 9.8 m/s2 . Answer in m What maximum height does he reach? Answer in units of m
October 24, 2011 by anonymous

Math-Corrections
Based on the survey,the librarian predicts that about two-thirds of the students in seventh grade will not like the new encyclopedia.Is this answer reasonable? Answer i got:yes
March 27, 2012 by Zoe

Physics
In a hydraulic lift, the maximum gauge pressure is 16.70 atm. If the diameter of the output line is 24.6 cm, what is the heaviest vehicle that can be lifted? The answer is 80400 N. How do I get this answer? Isn't weight measured in kg? Thank you in advance.
July 2, 2012 by James

Chemistry
NaI(aq)+Hg2(C2H3O2)2(aq)--> Express your answer as a chemical equation. Enter NOREACTION if no reaction occurs. Identify all of the phases in your answer. I need help! Someone please help..
October 27, 2012 by Lalo

To Laura/Joseph
I have taken care of the answer to the SO3 ==> SO2 + O2 equilibrium problem that we worked on last night about midnight. You should obtain the correct answer now.
March 9, 2013 by DrBob222

math
Use a calculator to evaluate an ordinary annuity formula for m, r, and t (respectively). Assume monthly payments. (Round your answer to the nearest cent.) $150; 8%; 35 yr Answer = $12.87 but I am wrong can u please help?
November 21, 2013 by Anonymous

science (check!)
which of the following would be most likely to lead to increased biodiversity? . My answer: National park planning (though I kind of have the answer of farming in thought too)
March 30, 2014 by luna

calculus-answer check
Determine the slope of the tangent line to the curve y=(x^2+3x)(x^2-2) at x=-1. I got 3 as my answer although I am not too sure that it's correct. I found the derivative of the function and then substituted -1 into the equation.
May 9, 2014 by Kim

chem
What is the maximum mass of S8 in grams that can be produced by combining 87.1 g of each reagent? Do not include units in your answer. Answer to three significant figures. 8SO2 + 16H2S → 3S8 + 16H2O
August 1, 2014 by kate

Advanced Math
A circle of center (-3 , -2) passes through the points (0 , -6) and (a , 0). Find a. The triangle bounded by the lines y = 0, y = 2x and y = -0.5x + k, with k positive, is equal to 80 square units. Find k. When the polynomial P(x) = x3 + 3x2 -2Ax + 3, where A is a constant, is...
March 28, 2012 by Brittney Hoang

Calculus
Given the function: f(x) = x^2 + 1 / x^2 - 9 a)find y and x intercepts b) find the first derivative c) find any critical values d) find any local(relative) extrema e) find second derivative f) discuss the concavity g) find any inflection points Please show me how u got this!
April 28, 2013 by Gabby

Calculus
Given the function: f(x) = x^2 + 1 / x^2 - 9 a)find y and x intercepts b) find the first derivative c) find any critical values d) find any local(relative) extrema e) find second derivative f) discuss the concavity g) find any inflection points Please show me how u got this!
April 28, 2013 by Gabby

Chemistry
Energy, q, w, Enthalpy, and StoichiometrySource(s): Consider the combustion of liquid methanol, CH3OH (l). CH3OH (l) +3/2O2 (g) = CO2 (g) + 2H2O(l) H = -726.5 kJ Part A: What is the enthalpy change for the reverse reaction? Express your answer using four significant figures. ...
June 28, 2011 by Lisa

2nd Grade Math
Jordan spent $6.37 on a book and $1.23 on a magazine. How much did he spend all together? First estimate the costs and the totals. _____+______=______ Then use partial sums and solve. _____
May 4, 2011 by Kelly

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