Most popular questions and responses by Kimmie
  1. chemistry help

    For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2

    asked on September 24, 2014
  2. math 7th grade

    if a map scale distance is 2cm:15km, what is the actual distance of a map scale that is 6cm? Do I set this problem up like this: 2cm/15km=?/6km and then cross multiply?

    asked on November 3, 2016
  3. Chemistry

    Hey, So a runner wants to run 10.0 km. She knows that her running pace is 7.5 m per hour. How many minutes must she run? Can you explain it?

    asked on August 31, 2014
  4. Math

    An airplane crosses the Atlantic Ocean​ (3000 miles) with an airspeed of 600 miles per hour. The cost C​ (in dollars) per passenger is given by C(x)=150+x/20+36,000/x What is the cost per passenger for quiescent​ (no wind)​ conditions? What is the

    asked on October 9, 2015
  5. Pyhsics

    The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the

    asked on April 10, 2014
  6. algebra

    20. At a local candy store, Malcolm purchased some 25-cent candies and some 30-cent candies. He spent a total of $4.75. Which equation below describes the number of each type of candy he bought? A25x + 30y = 4.75 Bx + y = (4.75)/(0.25 + 0.30) C25 + x + 30

    asked on September 28, 2017
  7. Statstics

    In a random sample of 450 cases of juice, 3 of the 48 chosen cases had major defects. The sampling method had a margin of error of 0.04. What is the interval estimate for the proportion that would have defects in the form (lower limit, upper limit)?

    asked on December 8, 2016
  8. chemistry

    consider mixing 3.5L of co2 and 1.8L of h2o at 35C and 740mm Hg. determine the mass of the unbalanced reaction. CO2 + H2O = C4H10 + O2

    asked on March 18, 2015
  9. Algebra

    What does it mean to refer to a 20 in tv set or a 25 in set?Such units refer to the diagonal of the screen. A 35 in unit also has a width of 28 in. What is it's height?

    asked on June 20, 2011
  10. Accounting

    Determine the amount to be paid in full settlement of each of the following invoices, assuming that credit for returns and allowances was received prior to payment and that all invoices were paid within the discount period.

    asked on November 28, 2016
  11. algebra

    A car rents for 30.00 per day plus 19 cent per mile. You are on a daily budget of 87.00. What mileage will allow you to stay within your budget

    asked on November 18, 2014
  12. accounting

    You issue a $120,000 bond at par on March 31 due in 10 years that pays 11%. You pay interest on September 30. You pay off the bond ten years later. Assume that the company makes no adjusting entries. What journal entries should be recorded to issue the

    asked on December 8, 2012
  13. Finance

    Can anyone explain to me how to use this formula? Cost of failing to take a cash discount Disc  ount percent 100 percent Discount percent 3   60 Final due date  Discount period I am trying to calculate Assume the proceeds from the loan with the

    asked on October 15, 2011
  14. Algebra

    How would I express the coordinates for y20 by x(-20)

    asked on December 24, 2010
  15. pre-calculus

    If sin a = 3/5 when Pi/2

    asked on January 28, 2010
  16. science

    Suppose that a biologist states that the average height of undergraduate students at your university is 205 cm plus or minus a standard deviation of 17 cm. What does this mean? Does it mean that the height of undergraduates at the university ranges from 17

    asked on September 11, 2014
  17. math

    Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please

    asked on September 1, 2014
  18. math calculus

    A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per

    asked on November 6, 2013
  19. Algebra

    For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is $84, what is the maximum number of trees you can buy

    asked on December 23, 2010
  20. Algebra

    A batch of concrete is made by mixing 1 part cement, 2.5 parts sand, and 3.5 parts gravel. How many pounds of sand and gravel are needed to make 300 pounds of cement?

    asked on September 22, 2010
  21. 9th grade

    Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 mile per hour and train B is traveling at 125 mile per hour. Train A passes a station at 3:15pm. If train B passes the same station at 3:27 pm at what time

    asked on March 10, 2010
  22. ethnics

    impact of Orientalism on Muslim and Arab Americans?

    asked on September 3, 2008
  23. math

    Find the maximum and minimum value of the quadratic function g(x) = 2x^2 + 6x + 3

    asked on September 17, 2014
  24. math - please help

    f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5 Find the domain of the function.

    asked on September 8, 2014
  25. Pyhsics

    What would be the final temperature of a mixture of 50 g{\rm g} of 17∘C^\circ C water and 50 g{\rm g} of 44∘C^\circ C water? I have no clue where I should even begin please help.

    asked on April 10, 2014
  26. calculus HELP!

    An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its

    asked on November 6, 2013
  27. Help! Calculus

    An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its

    asked on November 6, 2013
  28. Physics

    Capacitor X is charged to a potential difference 68 V by a battery. It is disconnected from the battery and then connected in parallel to an uncharged 12 µF capacitor. A voltage of 20 V is measured across the parallel combination. Calculate the

    asked on July 15, 2016
  29. math

    rewrite in standard form f(x)=x^2 -x-6

    asked on October 6, 2014
  30. math - please help

    f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5  Find the domain of the function.

    asked on September 9, 2014
  31. math

    Given the graph of y=f(x) 1. y = (-f) **I think this is that you reflect across the x-axis. 2. y = f(-x) = f(x) even I'm not sure. 3. y = -f(x) = f(-x) odd Not sure either.

    asked on September 2, 2014
  32. math

    Factor completely: A. 3x^3/2 -9x^1/2 +6x^-1/2 B. x^3 y -4xy

    asked on September 1, 2014
  33. accounting

    On March 3, a customer gives you $1800 cash for services not yet performed. At the end of the month, only $600 of services are performed. In preparing the March statement, all $1800 was listed as revenue. What errors would this cause? What principles are

    asked on December 8, 2012
  34. accounting

    The balance in the allowance for doubtful account is $30,000 credit. You write off $18,000 on a specific invoice to Bob. Later, Bob pays you $2000 on these written off invoices. At year-end, you estimate that $25,000 of invoices will not be collectible.

    asked on December 8, 2012
  35. human resources 240

    What are the special challenges of criterion contamination and what would be the effects on employees and employers if these challenges are not addressed?

    asked on January 3, 2011
  36. Algebra

    How would I express the coordinates for y20 by x(-20)

    asked on December 24, 2010
  37. 9th

    Solve for: -20

    asked on March 10, 2010
  1. algebra

    is it "a"

    posted on September 28, 2017
  2. algebra plz check answer

    y = 3x 4 - 2x 2 + x - 3 factor (3x^4 -2x^2) (x-3) Factor out x^2 from the first, so you have (x^2) (3x^2 - 2) (x-3), so x^2=0 3x^2 - 2 = 0 x-3=0 So how many zeros can you get after you solve these?

    posted on September 8, 2014
  3. math

    Follow the order of operations. 8 x [5 + (18-7)] ÷ 4 First, the parenthesis, (18-7) = 11, so 8 x [5+11] ÷ 4 Next, the parenthesis again, (5+11)=16, so 8 x (16) ÷4 Multiplication, 8 x (16) = 128, so 128 ÷ 4 Finally, division, 128 ÷ 4 = 32 so your

    posted on September 8, 2014
  4. Help! Calculus

    it's for calculus

    posted on November 6, 2013
  5. Algebra

    Thank you Ms. Sue, I can now understand what it was I was looking for. I kept thinking square and not seeing I was actually measuring a right triangle. Thanks again!

    posted on June 20, 2011
  6. human resources 240

    Thank you for the suggested sites, they were a tremendous help. I was able to understand what criterion defiecncy actually was and how the challenges would affect both the employee and employer if not addressed.

    posted on January 3, 2011
  7. Algebra

    Thank you so much. Sorry if you thought I was being impatient. I have no clue how I managed to do that. I will be careful to make sure it doesn't happen again. Thanks again.

    posted on December 24, 2010
  8. Algebra

    Sorry it must have been a mistake. I would not do that intentionally and I realize there are few people to help and the help isnt instant.

    posted on December 24, 2010
  9. Algebra

    I figured it out, and actually you multiply the 2.5 by 300 and then the 3.5 by 300 to get the amount of sand and gravel!!

    posted on September 22, 2010
  10. pre-calculus


    posted on January 28, 2010