Saturday

June 25, 2016
Total # Posts: 355

**Gen chem 2**

calculate the work performed if a balloon contracts from11.75 L to 806 mL due to an external pressure of 3.9 atm.
*November 6, 2013*

**Algebra 2**

A = 21w + 21h + 2wh Solve for h
*October 26, 2013*

**Algebra**

Markus jogs 4 mi around the track at an average rate of r mi/h. Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout last 1 h. At what rates did Markus jog and walk?
*October 24, 2013*

**Algebra**

At a cafeteria, the automatic ice machine can completely fill itself in 20 minutes. During lunch time, customers can completely empty the ice machine in 30 minutes. At the start of lunch time, the ice machine is completely and it starts making ice at the same time that ...
*October 24, 2013*

**Algebra 1 **

Markus jogs 4 mi around a track at an average rate of r mi/h. Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Solving Rational Equations**

Markus jogs 4 mi around a track at an average rate of r mi/h Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Algebra**

Markus jogs 4 mi around a track at an average rate of r mi/h Then he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 hour. At what rates did Markus jog and walk?
*October 23, 2013*

**Algebra**

To attend a family reunion, Beth drives 100 mi from Fresno and Clara drives 220 mi from San Jose. Both women drive the same speed in miles per hour, but Clara's drive takes 2 hours longer than Beth's. Find the length of Beth's drive. a. 1 hour. b. 2.2 hours c. 1.66...
*October 23, 2013*

**Solving Rational Equations**

Thanks
*October 23, 2013*

**Solving Rational Equations **

To attend a family reunion, Beth drives 100 mi from Fresno and Clara drives 220 mi from San Jose. Both women drive the same speed in miles per hour, but Clara's drive takes 2 hours longer than Beth's. Find the length of Beth's drive. a. 1 hour. b. 2.2 hours c. 1.66...
*October 23, 2013*

**Math - HELP!**

6a(3a+5a-4) 18a^2+30a^2-24a 48a^2-24a
*October 23, 2013*

**Solving Rational Equations **

At a cafeteria, the automatic ice machine can completely fill itself in 20 minutes. During lunch time, customers can completely empty the ice machine in 30 minutes. At the start of lunch time, the ice machine is completely and it starts making ice at the same time that ...
*October 23, 2013*

**Algebra**

Ms. Spinoni can prepare a mass-mailing of 500 letters in 10 hours. Mr. Harris can prepare a mass-mailing of 500 letters in 15 hours. How long will it take them to prepare a mass-mailing of 1000 letters if they work together? (Hint: The complete job is twice as big) a. 6 hours ...
*October 23, 2013*

**Solving Rational Equations **

Ms. Spinoni can prepare a mass-mailing of 500 letters in 10 hours. Mr. Harris can prepare a mass-mailing of 500 letters in 15 hours. How long will it take them to prepare a mass-mailing of 1000 letters if they work together? (Hint: The complete job is twice as big) a. 6 hours ...
*October 23, 2013*

**Algebra**

Markus jogs 4 mi around a track at an average rate of r mi/h THen he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Algebra**

Markus jogs 4 mi around a track at an average rate of r mi/h THen he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Algebra**

Markus jogs 4 mi around a track at an average rate of r mi/h THen he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Solving Rational Equations**

Markus jogs 4 mi around a track at an average rate of r mi/h THen he cools down by walking 1 mi at a rate 3 mi/h slower. His whole workout lasts 1 h. At what rates did Markus jog and walk?
*October 23, 2013*

**Algebra**

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*

**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*

**Algebra**

Explain
*September 13, 2013*

**Algebra**

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*

**Math 117b**

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*

**arithmetic**

7.86x 4.6=
*August 12, 2013*

**math**

A mason's assistant's rate of pay is $0.75 per cubic foot of earth moved. He moves 220 cubic feet of earth to dig a trench. What is his pay for this job? THE ANSWER IS NOT &330
*June 17, 2013*

**Math**

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*

**Math**

A hot water heater measures 20" in diameter. What is the area of a metal base for the water heater, assuming a two-inch overhang for the base beyond the edge of the heater?
*June 17, 2013*

**Trigonomety**

Two buildings are 30 ft apart. The angle of elevation from the top of one to the top of the other is 19°. What is their difference in height?
*May 16, 2013*

**Financial Accounting**

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*

**Calculus**

Use the Evaluation Theorem to find the exact value of the integral ç from 1/2 to 0 (a/ã(1−x^2)dx. The answer should involve the parameter a.
*April 17, 2013*

**Geometry **

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*

**math 118**

On a math test a student where the mean is 50 and the standard deviation is 12, a student has a z-score of 0.83. What did the student score on the test?
*April 8, 2013*

**science**

In guitar, L= 1/2 lambda ; =75/2 =37.5cm
*March 29, 2013*

**Spanish**

8. Juego baloncesto. 9. Juego golf.
*March 28, 2013*

**MATH**

WHY IS IT IMPORTANT TO SIMPLIFY RADICAL EXPRESSIONS BEFORE ADDING OR SUBTRACTING? HOW IS ADDING RADICAL EXPRESSIONS SIMILIAR TO ADDING POLYNOMIAL EXPRESSIONS?
*March 19, 2013*

**Math **

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*

**math**

An 18 kg mass is placed st one end of a steel bar that is 1 m long. A 35 kg mass is placed at the other end. Where should the fulcrum be placed to balance the bar?
*February 19, 2013*

**english**

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*

**math**

total of 17 heads and 42 feet with 3 times more ducks as pigs so how many duck do you have
*January 20, 2013*

**math**

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*

**physics, university**

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*

**Finance**

I dont have a clue how to solve this problem
*November 17, 2012*

**math**

13y-x=7 and 7-y/2=x are parallel, neither or perpendicular lines
*November 16, 2012*

**physics**

A length of wire has a radius of 3.00 ~ 10-3 m and a resistance of 0.200 ƒ¶. 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*

**Geometry**

Suppose you have four identical pieces of wood like those shown below. If m<b=40 can you construct a frame with opposite sides parallel? Explain.
*November 1, 2012*

**Geometry**

Find the measures of an interior angle and an exterior angle of a regular polygon with 6 sides.
*October 24, 2012*

**Ethics**

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*

**Ethics**

What are two examples of how personal values interact with an ethical theory?
*September 29, 2012*

**Ethics**

Is there a difference between decisions based on law versus decisions based on ethics?
*September 29, 2012*

**English**

Write the correct singular possesive, plural form and plural possessive for each word: Witness Attorney Agency Child Notary Public
*September 25, 2012*

**English Poetry Check**

#4 is seven
*August 29, 2012*

**english 11**

Anne Bradstreet was never married.
*August 23, 2012*

**Chemistry**

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*

**Chemistry**

The empirical formula for a compound with the molecular formula C6H12N2O4 is:
*July 8, 2012*

**Chemistry**

The empirical formula for a compound with the molecular formula C6H12N2O4 is?
*July 8, 2012*

**Chemistry**

If 13.75 g of iron (III) nitrate react with an excess of ammonium sulfide, how many grams of iron (III) sulfide are produced? Report your answer to 2 sig figs
*July 8, 2012*

**Composition**

When writing an essay is it ok to switch from past tense to present tense in the last paragragh
*July 2, 2012*

**Stats **

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*

**health**

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*

**English**

Ms. Sue, that was RUDE!
*May 13, 2012*

**Marketing**

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*

**geometry**

Find "a" to the nearest tenth if a= 36° and c=13.5
*March 14, 2012*

**Calculus AP need help!**

i dont know how or what to starts Find the slope of the tangent line to the curve 4x^2+3xy+3y^3=-251 at the point (-4,-5)
*February 29, 2012*

**Math**

A scale drawing of a house is 15 cm high. If the drawing was built with a scale of 1 cm: 2.5ft, how high was the actual house
*February 29, 2012*

**Calculus AP need help!**

1.) 4 cos x sin y = 1 2.) tan(x/y)= x+y
*February 29, 2012*

**Calculus AP need help!**

its difficulty problem. find dy/dx by implicit differentiation 1.4 cos x sin y = 1 2.tan(x/y)= x+y
*February 29, 2012*

**Math**

one postive number is 9 more than twice a number if product is 893 find the numbers
*February 16, 2012*

**math**

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*

**stats**

if IQ is normally distributed with a mean of 100 and a standard deviation of 10, what stand score (z-score) would represent a person with an IQ of 75?
*October 31, 2011*

**stats**

if income in the us was normally distributed, what z-score would represent the top 1%?
*October 31, 2011*

**el camino real**

if income in the US was normally distributed, what z-score would represent the bottom 10%, the poorest 10%
*October 31, 2011*

**business communication**

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*

**Statistics**

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*

**psychology**

Is the “reality” assumed by cognitive theorists relative or absolute? Why?
*September 17, 2011*

**Medicine**

Por Favor What advatage does Computerised tomography have over regular X-rays? Y Gracias!
*September 14, 2011*

**Writing**

My mother and I didn't see any more slang, but the one you told me. we read it out loud, but couldn't find none. Any more examples of slang in my story?
*August 30, 2011*

**Writing**

I revised it myself, I posted for someone else to look and tell me what I need to fix.
*August 30, 2011*

**Writing**

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*

**angles**

find the largest negative co terminal angle of -417 degrees.
*August 26, 2011*

**science**

determine your distance traveled and displacement if you walk 100m forward and then 35m backward
*August 3, 2011*

**accounting**

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*

**Early childhoodeducation**

I want to know what is positive peace
*June 24, 2011*

**chemistry**

how many moles of CO2 in .05M solution in .2L?
*June 7, 2011*

**Geometry**

Find the area of 33m, 30m, and 36.5m.
*May 27, 2011*

**algebra with applications**

what is the operations of 7+3*5
*May 20, 2011*

**spanish**

unscramble these- uolsrrsedeco
*May 9, 2011*

**math**

: Do you feel that mathematicians make to much of the mathematics and nature connection? Why?
*May 7, 2011*

**math**

Do you feel that nature influenced the development of geometry? How?
*May 7, 2011*

**math**

Should number theory be taught to grade school children?
*May 7, 2011*

**math**

In order to determine the amount of liquid a spherical tank will hold, would you need to use volume or surface area?
*May 7, 2011*

**math**

:Explain why a prime number must be deficient.
*May 7, 2011*

**math**

Why is number theory important in mathematics?
*May 7, 2011*

**science acids and bases**

what can you tell about the equations 2 P2O5?
*April 18, 2011*

**Language Arts**

....Poets, whoknow how to express so many beautiful things, are some of the most miserable people on the planet... Why is this Ironic?
*April 16, 2011*

**Language Arts**

Skiing was canceled on account of snow. Why is this Ironic?
*April 16, 2011*

**chemistry**

At what temperature (from your graph) do KNO3 and NaCL have same molar solubility?
*April 5, 2011*

**Chemistry**

Write a balanced equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, CaS.
*April 5, 2011*

**CHEMISTRY**

HOW MANY MG OF C2H4 MUST BE USED TO PRODUCED 875J OF HEAT
*April 4, 2011*

**CHEMISTRY**

WHAT MASS OF WATER CAN BE PRODUCED FROM 30.0G OF AMMONIA
*April 4, 2011*