Solving Rational Equations
100mL of a solution contains 30 mL of acid; this is called a 30% acid solution because part 30 ---- = ---- = 0.30. whole 100 How many milliliters of acid x would need to be added to the solution to turn it into a 50% solution ? (HInt: Adding acid increases both the volume of ...
October 23, 2013
Suppose a square garden has an area represented by 9x^2 square feet. If one side is made 7 feet longer and the other side is made 2 feet shorter, then the trinomial that models the area of the larger garden is 9x^2 + 15x - 14 square feet.
September 13, 2013
describes h(x), the height of a part of a rollercoster track,where x is the horizontal distance in feet from the center of this section of the track. The towers that support this part of the track are the same height and are 150 feet apart .Which is the best estiamate of the ...
August 18, 2013
PLEASE HELP !!! A mason is putting in the foundation for a wall. His assistant digs a trench in roughly the shape of a rectangular solid measuring 50 ft. in length, 12 inches deep along both sides, and 12 inches wide at the top and bottom. How many cubic feet of earth did he ...
June 17, 2013
Wings Inc., a software development firm, has stock outstanding as follows: 25,000 shares of cumulative 1%, preferred stock of $40 par, and 50,000 shares of $120 par common. During its first four years of operations, the following amounts were distributed as dividends: first ...
April 21, 2013
The grade of a road or a railway road bed is the ratio rise/run, usually expressed as a percent. For example, a railway with a grade of 5% rises 5 ft for every 100 ft of horizontal distance. 1. The Johnstown, Pennsylvania, inclined railway was built as a "lifesaver" ...
April 15, 2013
The price of a home is $185,000. A down payment of 10% is required with 2 points at the time of closing. The home is financed over a 25 year period with a fixed rate of 4.5%. Find the monthly payment and total interest paid?
March 5, 2013
Blatant,blight, contrive,garbled,immaculate,gaunt,retaliate .........The little girl was so-after her illness that her parents carefully-ed fattening meals that were sure to arouse her appetite.
February 13, 2013
don break a 4x7 array into a 2x7 array and another array. what is the fact for dons second array? write a number sentence that models the relationship of the 4x7 array to the other two arrays.
January 8, 2013
A length of wire has a radius of 3.00 x 10-3 m and a resistance of 0.200 ohms. When the potential difference across the wire is 10.0 volts, the electron drift speed is found to be 2.98 x10-4 m/s. On the basis of these data, calculate the density of free electrons in the wire.
November 19, 2012
A length of wire has a radius of 3.00 ~ 10-3 m and a resistance of 0.200 ¶. When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 ~ 10-4 m/s. On the basis of these data, calculate the density of free ...
November 15, 2012
CHEM Periodic Trends
Each of the statements below attempts to explain why some periodic property varies predictably among elements in the periodic table. Determine if each statement is true or false. Within a family, elements with higher atomic numbers have higher electronegativity because the ...
November 1, 2012
Write a 400- to 600 -word personal reaction paper using the same ethical theory. This paper must include at least two references and address the following: · The essential points of the theory as you understand them · How this theory intersects with your personal...
September 30, 2012
Calculate the molecular weight (MW) of a compound with the molecular formula C5H4FeN4. Report your answer to the nearest whole number value and do not include units. For example, if the MW was 35.45 amu, you would report "35" as your answer.
July 8, 2012
how did you come to this answer? The answer is approximately =0.017 b) Ten Cobalts are randomly selected and the miles per gallon for each car are recorded. What is the probability that the mean miles per gallon exceed 34 miles per gallon? The final answer will be = 0.0351
May 28, 2012
identify one way in which the role of cdc agency and the product or service it regulates or oversees affects consumer choice in health care marketplace. 2. identify 3 advantages of regulatory oversight for the selected healthcare product or service catagory to the consumer.
May 26, 2012
First, imagine that you are a small business owner with a very limited promotional budget. You cannot afford large-scale mass media advertising, such as expensive television or radio advertising. Next, in your discussion post, identify and briefly describe at least five things...
April 30, 2012
in a class of 30 students, 17 have computers at home and 20 have cassettes. If 4 students in the class have neither a computer or a cassette, how many of the 30 students have both?
November 10, 2011
You are writing to a reader who favors a different solution than the one you recommend. Which of the following is MOST likely to persuade the reader? A. Describe your reader's solution first, explain why it won't work, and then go on to describe your own solution. B. ...
October 26, 2011
People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 90% confidence? Initial survey results indicate that standard deviation= 15.5 books.
October 7, 2011
A perfect person or in other words, a goody-toe shoes is someone that has to have everything right. I'm not a perfect person, but I like things a certain way. Well, in the story, "The Possibility of Evil," a woman named Miss Strangeworth was that perfect person...
August 30, 2011
Jan. 1 Purchased a small company and recorded goodwill of $150,000. Its useful life is indefinite. May 1 Purchased for $90,000 a patent with an estimated useful life of 5 years and a legal life of 20 years
July 8, 2011
Journalizing in a General Fund: Modified Accrual Basis: Issued $20 million in long-term bonds. Acquired several tracts of land at a total cost of $4million, paying the entire amount in cash.
January 13, 2011
The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a distance of 21.0 km. The second path is by reflection from the ionosphere (a layer of ionized air molecules high in the atmosphere). Assume this ...
November 26, 2010
I wrote this for my class and I just want to make sure I have it right. The role of education plays a very big part in the financial world. It's a big part of becoming successful. It can help with learning basic math skills in order to better your finances. It can also ...
November 20, 2010
An unknown weak monprotic acid with the general formula HA has a Ka=5.5 x 10^-7. what is the value of the equilibrium constant that describes the following reaction? A- +H2O = HA +OH-
November 15, 2010
An automobile antifreeze mixture is made by mixing equal volumes of ethylene glycol (d=1.114 g/mL; M=62.07 g/mL) and water (d=1.00 g/mL) at 20 degrees C. The density of the mixture is 1.070 g/mL. Expreess the concentration of ethylene glycol as volume percent. I've tried ...
October 18, 2010
A baker uses sodium hydrogen carbonate as the leavening agent in a banana nut quickbread. the baking soda decomposes according to two possible reactions. 1. 2 NaHCO3 = Na2CO3+H2O+CO2 2. NaHCO3+H=H2O+CO2+Na. calculate the volume in mL of CO2 that forms at 180 degrees C and .975...
October 7, 2010
on a particularly hot 30 degrees C day near the seashore the partial pressure of water vapor in the air is .0303atm. given that the atmospheric pressure is 1 atm and the composition of dry air is 78% N, 21% O and 1%Ar, what is the partial pressure of oxygen gas?
October 7, 2010
Suppose that a firm is currently employing 30 workers, the only variable input, at a wage rate of $60. The average product of labor is 30, the last worker added 12 units to total output, and total fixed cost is: $3,600. what is the averge variable cost?
October 3, 2010
Business Research for Decision Making
1. Decide on the type of tool or instrument you think would be effective given your topic on if there is no relationship between customer relationship and customer loyalty, explain why this type of tool would be optimal, and point to research which has used similar tools. 2. ...
September 19, 2010