Wednesday

November 25, 2015
Total # Posts: 275

**Chem**

A gas has density of 1.977 g/dm3 at STP (a) what is its molecular mass? (b) what is its density at 77¢XC and 0.95 atm pressure? (c)If the gas is an oxide and has the formula XO2, what is the atomic mass of X
*November 15, 2015*

**physics**

In the Atwood machine shown in Figure 5.14a, m1 = 2.00 kg and m2 = 8.00 kg. The masses of the pulley and string are negligible by comparison. The pulley turns without friction and the string does not stretch. The lighter object is released with a sharp push that sets it into ...
*October 21, 2015*

**physics**

Suppose that a net force F gives an object with a mass of m an acceleration of 9.65 m/s/s. Suppose that the net force were increased by a factor of 4.7, and the mass were increased by a factor of 3.0. What would be the new acceleration (in m/s/s)? Please help, for I do not ...
*October 14, 2015*

**physics**

A care package is released from a plane moving with a horizontal speed of 123 m/s. The plane flies at a constant height of 1013 m above the ground. a.) Find the speed of the care package just before it hits the ground. b.) Find the magnitude of the angle with respect to the x-...
*October 2, 2015*

**math**

maggie has a 27 feet long ribbon what's the length of the ribbon in yards
*September 11, 2015*

**Math**

I posted this under business the first time and got no answer so since its more mathematical here it is again: I can only put away $1,000 a year toward retirement. I am 22 and plan on retiring at 65 and earning 6%. How much will I have at retirement? Not positive the answer I ...
*August 18, 2015*

**Business**

I can only put away $1,000 a year toward retirement. I am 22 and plan on retiring at 65 and earning 6%. How much will I have at retirement? Not positive the answer I got is correct..my answer is $464,215.00
*August 18, 2015*

**Math**

Farmer Brown planted corn and wheat on his 1200 acres of land. The cost of planting and harvesting corn is $275.00 per acre. The cost of planting and harvesting wheat is $125.00 per acre. If Farmer Brown's total cost was $244,500, how many acres of corn did he plant?
*July 19, 2015*

**Algebra**

what is the interest rate necessary for an investment to quadruple after 5 years of continuous compound interest? I keep getting r=11%
*July 10, 2015*

**Math**

I want to buy a house in 5 years. I need to have a down payment of $50,000. How much do I need to have today in order to have the down payment, if I can earn 5%? I have tried to figure this out and have arrived at 39200.00
*July 8, 2015*

**Business**

I just did the problem another way and got 39200.00 please help me!
*July 8, 2015*

**Business**

This is what I get: 39,176.31 correct?
*July 8, 2015*

**Business**

I want to buy a house in 5 years. I need to have a down payment of $50,000. How much do I need to have today in order to have the down payment, if I can earn 5%? not sure how to go about this problem
*July 8, 2015*

**Business**

I want to buy a car with cash in 4 years. I have $10,000.00 that I can invest today. I can get a bond earning 4%. How much will I have for the purchase? This is what I am thinking for an answer but not quite sure: N=4 years I=4% PV=10,000 for a total of 11698.59 Am I on the ...
*July 7, 2015*

**Algebra**

I am having a hard time trying to figure this out. I have watched a video on how to do it but unable to understand. If i know what to put where in the equation I would be able to figure it out. I know I have to change 4 hours to 240 minutes.
*July 5, 2015*

**Algebra**

Under ideal conditions, a population of e. coli bacteria can double every 20 minutes. This behavior can be modeled by the exponential function: N(t)=N(lower case 0)(2^0.05t) If the initial number of e. coli bacteria is 5, how many bacteria will be present in 4 hours?
*July 5, 2015*

**Business**

It is 10% but should it be? or should it be another amount or percent?
*June 29, 2015*

**Business **

As a Christian, do you see tithing as a requirement? Should it be 10%?
*June 29, 2015*

**Algebra**

Form a third degree polynomial function with real coefficients such that 2+i and -5 are zeros. f(x)= ?
*June 29, 2015*

**Algebra**

The price p and the quantity x sold of a small flat-screen television set obeys the demand equation below. a) How much should be charged for the television set if there are 80 television sets in stock? b) What quantity x will maximize ...
*June 25, 2015*

**Algebra**

A golf ball is struck by a 60-degree golf club at an initial velocity of 84 feet per second. The height of the golf ball in feet is given by the quadratic function h(x)= 16 x^2/(42)^2+72.7/42x where x is the horizontal distance of the golf ball from the point of impact...
*June 25, 2015*

**Science**

Chemical reactions. When we cook anything, the tartness usually flavors down and the natural fruit flavors and inherent sugars expand their presence.
*June 25, 2015*

**Algebra**

Jim wants to build a rectangular parking lot along a busy street but only has 1,900 feet of fencing available. If no fencing is required along the street, find the maximum area of the parking lot.
*June 24, 2015*

**Algebra**

Farmer Ed has 9,000 meters of fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the river, what is the largest area that can be enclosed?
*June 24, 2015*

**Algebra**

A club currently has 300 members who pay $ 400 per month for membership dues. The club's board members want to increase monthly revenue by lowering the monthly dues in hopes of attracting new members. A market research study has shown that for each $ 1 decrease in ...
*June 24, 2015*

**algebra**

A rancher has 4,700 feet of fencing available to enclose a rectangular area bordering a river. He wants to separate his cows and horses by dividing the enclosure into two equal areas. If no fencing is required along the river, find the length of the center partition ...
*June 22, 2015*

**algebra**

A rancher has 4 comma 7004,700 feet of fencing available to enclose a rectangular area bordering a river. He wants to separate his cows and horses by dividing the enclosure into two equal areas. If no fencing is required along the river, find the length of the center ...
*June 22, 2015*

**algebra**

Jim wants to build a rectangular parking lot along a busy street but only has 1 comma 9001,900 feet of fencing available. If no fencing is required along the street, find the maximum area of the parking lot.
*June 22, 2015*

**algebra**

Farmer Ed has 9 comma 0009,000 meters of fencing, and wants to enclose a rectangular plot that borders on a river. If Farmer Ed does not fence the side along the river, what is the largest area that can be enclosed?
*June 22, 2015*

**algebra**

A club currently has 300300 members who pay $ 400$400 per month for membership dues. The club's board members want to increase monthly revenue by lowering the monthly dues in hopes of attracting new members. A market research study has shown that for each $ 1$1 ...
*June 22, 2015*

**Algebra**

The CarryItAll mini-van, a popular vehicle among soccer moms, obeys the demand equation ppequals=negative StartFraction 1 Over 40 EndFraction x plus 19 comma 000−140x+19,000. The cost of producing xx vans is given by the function Upper C left parenthesis x...
*June 22, 2015*

**word problem **

A contractor, Mr. Parker charged his customer $100 for painting a rectangular ceiling of length 5.4m and width 3m. Another contractor, Mr. Lewis charged his customer $115 for painting a rectangular ceiling of length 5.7m and width 3.2m.The quality of work is the same and both ...
*May 7, 2015*

**Chemistry**

Suppose you are assigned to prepare a buffer of 0.10M HNO2 (Ka=1.7 x 10^-4) and 0.10M NaNO2 by mixing equal volumes of both solutions. What is the pH of the resultant solution? How would I first start this question? I have no clue what the steps are to be frank.
*April 15, 2015*

**math**

How many 50 centimeter pieces of ribbon can Casey cut from a roll of 60 meters long?
*March 18, 2015*

**Calculus 2 Trigonometric Substitution**

I'm working this problem: ∫ [1-tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)-[(sin^2x/cos^2x)/(1/cosx) ∫cosx-sinx(sinx/cosx) ∫cosx-∫sin^2(x)/cosx sinx-∫(1-cos^2(x))/cosx sinx-∫(1/cosx)-cosx sinx-∫secx-∫cosx sinx-sinx-∫...
*March 15, 2015*

**Calc**

∫ (2x+1)/(x+1) dx Please show steps if you work it. I think it's a partial fraction and worked with decomposition. Not sure though.
*March 14, 2015*

**Calculus 2**

I got the first two, but I'm unsure with the last one. I got the answer to be -ln |secxtanx|+C Here's what I did: ∫ [1-tan^2 (x)] / [sec^2 (x)] dx ∫(1/secx)-[(sin^2x/cos^2x)/(1/cosx) ∫cosx-sinx(sinx/cosx) ∫cosx-∫sin^2(x)/cosx sinx-∫(...
*March 14, 2015*

**Calculus 2**

∫ tan^2 (x) sec^4 (x) dx ∫ [tan^2 (t) + tan^4 (t)] dt ∫ [1-tan^2 (x)] / [sec^2 (x)] dx Trigonometric integral Please show steps so I can understand!
*March 14, 2015*

**Math**

The table shows the actual retail market share of passenger cards from Ford Motor Company as a percentage of the U.S. market. Year Market Share 1975 23.6% 1980 17.2% 1985 18.8% 1990 20.0% 1995 20.7% A mathematical model for this date is given by f(x) = 0.04x^2 - 0.8x + 22 ...
*February 10, 2015*

**psychology**

In general, the approach to stress embraced by psychoneuroimmunologists focuses on
*December 14, 2014*

**ps316**

There 112 seats there 7 seats in each row and 70 people are seated how many rows are empty
*November 30, 2014*

**physics**

What physics is involved for a passenger feeling pushed backward into the seat of an airplane when it accelerates along the runway during takeoff?
*September 16, 2014*

**algebra**

Write a formula to express the following sentence as an equation: The sale price us 25% off the original price. Use S for sale price and P for original price to express S as a function of P.
*August 31, 2014*

**math problem solving**

yes it is. thanks
*August 28, 2014*

**math problem solving**

the digit 5 occurs two times in the population of fairbanks. what is the value of each 5? explain your answer fairbanks- 35,252
*August 28, 2014*

**Biology**

Suppose that a repressor regulated the expression of the galA gene. Which of the parenthesis would be correct? (((supposing hypothetical bacterium gene: "galA" – encodes an enzyme that is required for cells to digest the sugar galactose/and/ "argB" &#...
*August 9, 2014*

**sociology**

TWO is the wrong answer..I just got it wrong on the quiz. The correct answer is THREE.
*May 18, 2014*

**English**

The astronauts who were selected for this mission had to be in superb physical condition. Is sentence a essential or nonessential?
*April 30, 2014*

**math**

1/32 1/12 times 6/16 equals to 1/12 times 3/8 which equals to 1/32
*April 3, 2014*

**Finite Math**

:
Four cards are drawn without replacement from a well shuffled standard deck of cards. Let X be the number of aces drawn. 12. What are the possible values of the random variable X? Write them in increasing order as a set using roster (or list) notation. 13. Sketch a ...
*December 14, 2013*

**Journalism **

Please im begging you were going to submit the last articles tomorrow, help me make a feature article ... the topic is about unity for what happened in the philippines, the super typhoon yolanda please pleasple please
*December 12, 2013*

**statistics**

Playing game of chance and pay 300 by rolling a fair die one time if you rome a 2 and receive $1300 if you roll a 4 or six you receive $900 if you ore a 3 5 or 9 receive nothing. find expected value for this game. based on value is it a good game to play?
*July 13, 2013*

**statistics**

participant on tv show picke from lage # applicants with equal number of men and woman .amongst the last 9 participant 7 have been women . if they are picked randomly what is the probability of geting 7 more women when 9 people are picked
*July 13, 2013*

**statistics**

Test consist of 10 multiple choice questions each having 4 possible answers one being correct. you guessed all 10 what is the probability of getting less than 30%
*July 13, 2013*

**statistics**

Miller (2008) examined the energy drink consumption of college undergraduates and found that males use energy drinks significantly more often than females. To further investigate this phenomenon, suppose a researcher selects a random sample of n=36 male undergraduates and a ...
*July 10, 2013*

**statistic of behavioral science**

for each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer. A score of x=56, on an exam with the mean =50 and the standard deviation of 4; or a score of x=60 on an exam with the mean=50 and the standard deviation =20
*June 22, 2013*

**Chemistry 12**

When 1.00 g. of MgCO3 is added to 2.0 L of water, some, but not all, will dissolve to form a saturated solution. Calculate the mass of solid that remains undissolved.
*April 4, 2013*

**chemistry**

12g/molC / 44g/molCO2 = x / 1.039g CO2 12/44 (1.039) = 0.2834 g C 2g/mol H2 / 18g/molH2O = x / 0.6369gH2O 2/18 (0.6369) = 0.071 g H 0.5438 - 0.2834 - 0.071 = 0.1939 g O 0.2824gC/12g/molC = 0.0236 mol C 0.071gH / 1g/molH = 0.071 mol H 0.1939gO/16g/molO = 0.0121 mol O Divide ...
*February 21, 2013*

**math**

how do you do the steps for this problem find two exact values for sin(cos^-1 sqrt5/6)
*February 4, 2013*

**Math**

3a+4b=-25 2a-3b=6
*February 4, 2013*

**algebra**

Use factoring and the zero-product property to solve the following problems. 1. z(z-1)(z+3)=0 2. x^2-x-10=2 3. 4a^2-11a+6=0
*November 28, 2012*

**Pschology**

A developing field in psychology is called Positive Psychology. It is exploring ways to help people become happier and productive in life. Describe the field of positive psychology and provide your critique of this particular field. What does the research suggest on the value ...
*November 20, 2012*

**trig**

A ship is headed due north at a constant 20 miles per hour. Because of the ocean current, the true course of the ship is 15°. If the currents are a constant 18 miles per hour, in what direction are the currents running? (Enter your answers as a comma-separated list. Round ...
*November 16, 2012*

**trig**

A 52-foot wire running from the top of a tent pole to the ground makes an angle of 57° with the ground. If the length of the tent pole is 44 feet, how far is it from the bottom of the tent pole to the point where the wire is fastened to the ground? (The tent pole is not ...
*November 16, 2012*

**trig**

Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest whole number. Round your answers for sides c and c' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank...
*November 16, 2012*

**trig**

Find all solutions to the following triangle. (Round your answers for angles A, C, A', and C' to the nearest minute. Round your answers for sides a and a' to two decimal places. If either triangle is not possible, enter NONE in each corresponding answer blank.) B...
*November 16, 2012*

**trig**

Find all solutions to the following triangle. (Round your answers for angles A, B, A', and B' to the nearest minute. Round your answers for sides a and a' to the nearest whole number. If either triangle is not possible, enter NONE in each corresponding answer blank...
*November 16, 2012*

**trig**

Find all solutions to the following triangle. (Round your answers to one decimal place. If either triangle is not possible, enter NONE in each corresponding answer blank.) A = 115.2¡ã, a = 43.6 cm, b = 23.1 cm First triangle (assume B ¡Ü 90¡&...
*November 16, 2012*

**trig**

Given BC = 53 cm, BD = 62 cm, CD = 80 cm, ABC = 53°, and ACB = 66°, find the following. (Round your answers to the nearest whole number.) (a) the length of the chainstay, AC AC = cm (b) BCD BCD = °
*November 16, 2012*

**trig**

A barge is pulled by two tugboats. The first tugboat is traveling at a speed of 16 knots with heading 135°, and the second tugboat is traveling at a speed of 15 knots with heading 195°. Find the resulting speed and direction of the barge. (Round your answers to the ...
*November 16, 2012*

**trig**

A plane has an airspeed of 190 miles per hour and a heading of 24.0°. The ground speed of the plane is 214 miles per hour, and its true course is in the direction of 40.0°. Find the speed and direction of the air currents, assuming they are constants. (Round your ...
*November 16, 2012*

**trig**

A plane is flying with an airspeed of 150 miles per hour and heading 155°. The wind currents are running at 25 miles per hour at 160° clockwise from due north. Use vectors to find the true course and ground speed of the plane.
*November 16, 2012*

**English**

Her responsibilities include assisting other tasks as required / assisting with other tasks as required Which one is correct?
*October 30, 2012*

**UMD**

A solution of H2SO4(aq) with a molal concentration of 3.22 m has a density of 1.183 g/mL. What is the molar concentration of this solution?
*September 30, 2012*

**Physics**

A jet plane lands with a velocity of 100 m/s and can accelerate at a maximum rate of -5.0 m/s2 as it come to rest. Can this plane land at an airport where the runway is 0.80 km long?
*August 26, 2012*

**geometry**

find th measure of DAEB for MDBEC = 127 DEGREES
*July 21, 2012*

**english**

please write a paragraph to show you comprehend what analogies and idoms are. use at least one analogy and one idom in the paragraph
*July 19, 2012*

**Psychology**

How would the researcher randomly select files? (What does the process look like?)
*July 17, 2012*

**Art 101 Art Appreciation**

CAN YOU HELP WIYH THE RESEARCH ON THIS PAPER I DO NOT HAVE MY BOOK
*July 12, 2012*

**geometry**

GRG
*July 1, 2012*

**Finance**

The target capital structure for QM Industries is 38% common stock, 5% preferred stock, and 57% debt. If the cost of common equity for the firm is 17.7%, the cost of preferred stock is 10.4%, the before-tax cost of debt is 7.8%, and the firm's tax rate is 35%, what is QM&#...
*June 29, 2012*

**chemistry**

consider the reaction between copper metal and chlorine gas producing solid copper(1) chloride. when 16.2g of copper is reacted in an excess of chlorine, how many grams of copper(1) chloride will be produced
*April 28, 2012*

**chemistry**

In reverse osmosis, water flows out of a salt solution until the osmotic pressure of the solution equals the applied pressure. If a pressure of 47.0 bar is applied to seawater, what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Mc=? ...
*February 19, 2012*

**Physical Geography**

38 degrees celcius is what degree F?
*February 13, 2012*

**Math**

A juice concentrate containing 65% solids is added to a single-strength juice solution(containing 15% solid), in order to generate a final product which contains 45% solids. Calculate the amounts required for the concentrate and for the single strength solution to produce ...
*February 7, 2012*

**leadership**

total points of the semester you can earn 170 but i scored 140 what is my grade
*February 1, 2012*

**Engineering/Chemistry**

Milk is flowing through a heat exchanger at a rate of 2000kg/h. he heat exchanger supplies 111,600kJ/h. The outlet temperature of the product is 95C. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg*C)
*January 31, 2012*

**Chemistry**

12312
*January 24, 2012*

**geometry**

22. If I drink orange juice, then I am healthy.
*November 6, 2011*

**statistics**

If 86% of households have cable television and three households are picked at random, what is the probability that at least one of those three picked will have cable television?
*September 25, 2011*

**Math**

Thank you!
*August 19, 2011*

**Math**

Determine the solution set of the system. x^2+y^2=9 x+y=3 Very confused on this one! PLease Help!
*August 19, 2011*

**Math**

Write the standard form of the equation for the circle that passes through the points (2, 6), (-4, 6), and (-4, -2). Then identify the center and radius. So far I got 2D+6E+F+40 -4D+6E+F+52 -4D-2E+F-20 IS this correct> and how do I solve it?
*August 19, 2011*

**english**

what is correct barb-and i or barb and me
*August 17, 2011*

**Programming Concepts**

how do you Create a Web page that displays all numbers from 20 to 1 and indicates whether the number is prime in it displays?
*July 25, 2011*

**Physics**

Ohh my bad sorry
*June 24, 2011*

**Physics**

Wait how is this physics??
*June 24, 2011*

**Physics**

If one used a stiff vertical spring rather than a regular one what would be the results? The gravitational PE and the Elastic PE would decrease. Am i right?
*June 24, 2011*

**Physics**

What would the gravitation PE and Elastic PE be like on the moon?
*June 24, 2011*

**Biochemistry**

When you dilute something you are just spreading it out more
*June 24, 2011*