Wednesday

October 26, 2016
Total # Posts: 1,099

**Calculus**

Solve for x. Don't do the work using algebra and don't use a calculator. The Laws of Logarithms will be helpful. ln(x^2 - 1)= 3

*October 5, 2011*

**chem**

number of moles in 22.6g C3H7OH

*October 3, 2011*

**Math**

I don't. Know. 2

*October 2, 2011*

**Math**

Choices are 7.421 7.3308 7.5555 7.3 7.49 7.65

*September 28, 2011*

**Math**

By default, your numerical entry is scored as correct if it is within 1% of the correct answer. A rule of thumb is always to enter at least 3 digits for numerical questions. If the correct answer is 7.48809, which of the following entries would be counted as correct? That is, ...

*September 28, 2011*

**Chemistry **

I am having a hard time solving this problem. The formula given is: T=Tin - (Tin - Tinit.)e(-v/v)t If the initial temperature Tinit is 115 (degrees F), the cold water temperature is 35 (degrees F) (1.7 degrees C), and the volume and volumetric flow rate are 3,000 liters and 30...

*September 25, 2011*

**Geometry**

What is the area of a rectangle with a length of 8 inches is 48 square inches. what is the perimeterof the rectangle?

*September 23, 2011*

**calculus**

is it C. or D.

*September 22, 2011*

**calculus**

Assume that x and y are differentiable functions of t. Find dy/dt using the given values. xy=x+4 for x=4, dx/dt=-5 a. 0.20 b. 3.75 c. 1.25 d. 5.00 e. -0.25

*September 22, 2011*

**Calculus**

The area of a circle is changing at a rate of 2 in.^(2)/sec. At what rate is its radius changing when the radius is 9 in.? a. (9/2)in./sec. b. (2/9)in./sec. c. (2/9pie)in./sec. d. (1/9pie)in./sec. e. (1/9)in./sec.

*September 22, 2011*

**Calculus**

C.

*September 22, 2011*

**Calculus**

Find (dy/dx) for the equation (7x+8y/9x-4y)=4. a. (dy/dx)=(-29/24) b. (dy/dx)=(43/24) c. (dy/dx)=(29/24) d. (dy/dx)=(-43/24) e. (dy/dx)=4

*September 22, 2011*

**Calculus**

Thanks, i thought it was B. your awesome.

*September 22, 2011*

**Calculus**

The number of people who donated to a certain organization between 1975 and 1992 can be modeled by the equation D(t)=-10.61t^(3)+208.808t^(2)-168.202t+9775.234 donors, where t is the number of years after 1975. Find the inflection point(s) from t=0 through t=17 , if any exist...

*September 22, 2011*

**calculus**

I will try but there is no diagram.

*September 22, 2011*

**calculus**

A power station is on one side of a river that is 0.5 mile wide, and a factory is 5.00 miles downstream on the other side of the river. It costs $15 per foot to run overland power lines and $23 per foot to run underwater power lines. Estimate the value of x that minimizes the ...

*September 22, 2011*

**algebra**

x/8-1/6=6

*September 20, 2011*

**Algebra 2 math**

What is the 32nd term of the arithmetic sequence where a1 = 12 and a13 = –60?

*September 19, 2011*

**Excel Problem**

the formula giving was T= Tin. - (Tin. - Tint.)e (-v/v) Where Tin = 1.7 degrees C and Tin is the to the temperature of the cold water flowing into the tank

*September 18, 2011*

**Excel Problem**

If the initial temperature is 115 F (46 degrees C), the cold water temperature is 1.7 (degrees C), and the volume and volumetric flow rate are 3,000 liters and 30 liters per minute, respectively, (a) Calculate the expected water temperature at 5-minute intervals for the first ...

*September 18, 2011*

**Chemistry**

How many milliliters of 5M H2SO4 are required to make a 1500ml of a .002M H2SO4 solution. I used the formula M*L=M * L so mL *5 = 1500 * .002 I got .6mL is this right?

*September 18, 2011*

**Chemistry**

Thank you DrBob222! For anyone else with the same problem here is how I did it following the above instructions d=1.24g/ml 1240g in 1L 1240g/342.3moles=3.6M

*September 18, 2011*

**UOP**

(1/15abc)*(5a^3b^5c^2)

*September 12, 2011*

**math**

Angles X and Y are congruent. Angle X has a degree measure of 15. What is the measure of angle Y?

*September 2, 2011*

**American History**

Put these in chronologica order according to their founding dates: U.S. Children's Bureau, FDA, National Park Service, American Legion, Federal trade commission

*August 26, 2011*

**Mathematics**

it has 6 sides

*August 15, 2011*

**chemistry 101**

What is the pH of a solution in which 296 mL of HCl g, measured at 28.0 C and 1.02 atm, is dissolved in 1.5 L of aqueous solution?

*August 10, 2011*

**chemistry**

296mL is the volume

*August 8, 2011*

**chemistry**

I plugged in all my numbers but I am still stuck on how to find n:moles

*August 8, 2011*

**chemistry**

What is the pH of a solution in which 296 mL of HCl measured at 28.0 C and 1.02 atm, is dissolved in 1.5 L of aqueous solution?

*August 8, 2011*

**Algebra**

A solar collector and its stand are in the shape of a right triangle. The collector is 5.00 m long, the upright leg is 2.00 m long, and the base leg is 4.58 m long. Because of inefficiencies in the collector’s position, it needs to be lowered by 0.50 m on the upright leg...

*August 7, 2011*

**physics**

A 2.0-kg wooden block slides down an inclined plane 1.0 m high and 3.0 m long. The block starts from rest at the top of the plane. The coefficient of kinetic friction between the block and plane is 0.35. What is the speed of the block when it reaches the bottom?

*August 1, 2011*

**Phil103 Informal Logic**

1 A 2 A 3 B 4 A 5 C 6 C 7 D YOU WILL HAVE FIGURE OUT THE OTHER 4.... BUT IF YOU GET THOSE 7 CORRECT YOU WILL MAKE A 70. BETTER THEN A ZERO.

*July 31, 2011*

**Business-**

Thank-you!

*July 22, 2011*

**Business-**

Explain how these laws intertwine: Title VII of the Civil Rights Acct of 1964, Civil Rights 1991, Opportunity act 1972, Age Discrimination of 1967, Disabilities act, immigration reform and control act of 1986, Fair labor standards act Also explain how the number of employees ...

*July 22, 2011*

**Business**

Noncompliance as in company's not being in compliance. "Federal legislative laws" Title VII of the Civil Rights Acct of 1964, Civil Rights 1991, Opportunity act 1972, Age Discrimination of 1967, Disabilities act, immigration reform and control act of 1986, Fair ...

*July 22, 2011*

**Business**

Explain how the number of employees in the company affects the company's status if the company is not in compliance. Also explain how federal legislation laws intertwine.

*July 22, 2011*

**physics**

A motorcyclist is trying to leap across a canyon by driving horizontally of the cliff that is 70.0 m high at 38.0 m/s. Ignoring air resistance, use energy conservation to find the speed with which the cycle strikes the ground at a height of 35.0m on the other side of the ...

*July 14, 2011*

**Chemistry 111**

How many moles of methane are produced when 8206 moles of carbon dioxide gas react with excess hydrogen gas?

*July 14, 2011*

**Chemistry 111**

what is the molar mass of Butane,C7H10?

*July 14, 2011*

**Chemistry 111**

How many moles of nitrogen N are there in 71.0g of Nitrous Oxide(N2O)?

*July 14, 2011*

**Chemistry 111**

What is the mass of 7080 moles of magnesium chloride (MgCl2)?

*July 14, 2011*

**physics**

Calculate the quantity of heat required to raise the temperature of 2.00 g of water 4.00◦C.

*July 5, 2011*

**physics**

A system is provided 50 J of heat and work done on the system is 10 J. What is the change in internal energy

*July 5, 2011*

**Physics**

A spherical piece of metal has a radius of .250m and a mass of 503 kg. what is its specific gravity?

*June 30, 2011*

**physics**

A satellite explodes in outer space, far from any other body, sending thousands of pieces in all directions. How does the linear momentum of the satellite before the explosion compare with the total linear momentum of all the pieces after the explosion?

*June 28, 2011*

**physics**

Two identical cars have the same speed, one traveling east and one traveling west. Do the cars have the same momentum?

*June 28, 2011*

**physics**

thanks that wesite is very helpful

*June 23, 2011*

**physics**

Im sorry 3.45 meters

*June 23, 2011*

**physics**

Whats the force of attraction between a 15.0kg box and a 63.0kg person if they are 3.45 apart?

*June 23, 2011*

**Life orentation**

A clear explanation of how smoking is a human factor that may cause ill health, accidents, crises or disaster?

*June 21, 2011*

**Math**

Ben takes 6hrs to get a job done & Ted takes 11hrs to get the same job done. If they work together how long will it take them?

*June 12, 2011*

**Statistics**

What does the scope of the graph refer to?

*June 10, 2011*

**Product of Terms [ 9th Grade]**

Is this exactly the way the terms are presented in our text book?

*June 10, 2011*

**8th grade math**

-First find the cost per ounce: 2.80 divided by 20 = .14 per ounce -Then, multiply by 35 to find the price for 35 ounces: .14 x 35 = 4.90 -Therefore, a 35 ounce bag of popcorn would be $4.90! Hope this helped!

*June 10, 2011*

**aleg/trig**

two forces of 14and 30 act on a body forming an obtuse angle w/ eachother. if the resultant is 60, whats the angle betweeen the 2 forces?

*June 9, 2011*

**alegbra/trig**

x^2+2x-15=0 solve by completing the square

*June 9, 2011*

**statistics**

The table below shows the number of girls who ran certain distance. -------------|---|----|---|----|----|--Distance(Km) | 5 | 10 |15 | 20 | 25 | -------------|---|----|---|----|----|--No. of girls | 2 | 1 | 3 | 4 | X | -------------|---|----|---|----|----|-- Given that the ...

*June 5, 2011*

**life orientation**

5 ways in which alcohol abuse impacts the community

*May 24, 2011*

**Drug addiction substance**

Human factors that cause ill health.accidents,crises/disaster and an appropriate way to deal with these

*May 16, 2011*

**Chemistry**

Can an acidic solution be made less acidic by adding an acidic solution?

*May 11, 2011*

**Physics**

If mass=100 tones, speed=8kn/s,height above ground=100km. What is the mass in kg?

*May 4, 2011*

**life orintation**

Pollution

*May 2, 2011*

**MATH**

We want an estimate of the mean time required for ships of a particular class to cross the Pacific Ocean from San Francisco to Tokyo. Little is known about the distribution of the mean time for this class of ships to cross the ocean due to the age variation of the ships. It is...

*May 1, 2011*

**Geology**

Why isn't the land surface of Earth flat after millions of years of erosion by mass wasting as well as by other erosional agents?

*April 20, 2011*

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting? Be thorough! Give me AT LEAST two things.

*April 20, 2011*

**Geology**

Describe the effect of shear strength on the following: a.) slope angle b.) orientation of planes of weakness c.) water in soil d.) vegetation Be thorough and THINK!

*April 20, 2011*

**Geology**

If you were building a house on a cliff, what would you look for to ensure that your house would not be destroyed through mass wasting?

*April 20, 2011*

**science**

please help.....i don't have my txt book with me an i need 2 kno everything bout Non-Vascular and Vascular plants....please rovide a website...........i cant find any

*April 19, 2011*

**scirence**

hpw do water and dissolved materials move through non-vascular plants?

*April 19, 2011*

**Math**

Draw two different shapes with an area of 6 square units and a perimeter of 12 units

*April 17, 2011*

**Maths**

The right rectangular prirm is the diagqam when x=7cm, y=5cm and z=1ocm

*April 17, 2011*

**math help!**

How many different 5-person subcommittees can be formed from a club having 13 members?

*April 16, 2011*

**chemistry**

why is it a bad idea to use lead in ceramic object that are used to serve food

*April 14, 2011*

**Geology**

PLEASE HELP By applying the various principles, draw a cross section of an area in which the following sequences of events occurred. The relative time relationship for all events should be clear to you from your single cross section that shows what the geology looks like at ...

*April 13, 2011*

**9th grade math word problems**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...

*April 7, 2011*

**math**

i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now? 2) Jennifer is 6 yrs older than Sue. in 4 yrs, she will be twice as old...

*April 7, 2011*

**algebra **

a train leaves at 2pm heading due south at 60 mph. a second train leaves at 3:15pm heading due north at 80 mph. at what time will they be 250 miles apart?

*April 3, 2011*

**Chemistry**

Express the rate of the reaction 2C2H6 + 7O2 -> 4CO2 + 6H2O in terms of: a. Delta [C2H6] b. Delta [CO2] Show work please

*April 1, 2011*

**Math>>>>if anyone could check my answer**

this problem is difficutl for me i have an answer but im unsure so if someone could check my answer please. heres my problem: A light year is the distance that a light travels through a vacuum (space without matter) in one year. A light year is about 9.46 x 10^12km. The ...

*March 31, 2011*

**science**

Replication is called "semi-conservative" because half of the orginal strand is? idk i been workin on the question 4 an hr!!

*March 31, 2011*

**survey of science**

if a automobile with a mass of 500kg hits another car that has a mass of 650kg produces a force of 1800n, find the acceleration

*March 28, 2011*

**Managerial Accounting**

The questions in this exercise are based on JetBlue Airways Corporation. To answer the questions, you will need to download JetBlue’s 10-K/A for the year ended December 31, 2004 (10K/A with a filing date of March 8, 2005). You do not need to print the 10-K/A to answer the...

*March 28, 2011*

**math**

6n2-19n+15=o (the 2 is an exponent) idk how 2 do it the teacher told us how but didn't show us plz help

*March 23, 2011*

**legal terminology**

Defamation through speech or another heard medium is known as A. libel. B. slander. C. damage. D. damage. my answer B

*March 23, 2011*

**algebra2**

f(x)=3(x+18)(x-8)

*March 20, 2011*

**chemistry**

John has three bottle of mineral acid but does not know which is which since he did not label the bottles before filling them. Suggest a method to which could be used to identify the acids.

*March 20, 2011*

**Math**

Convert these unlike fractions to equivalent like fractions and add them. You must use the LCD to get the answer correct. If possible, reduce the final sum. 1/7 = ?/? + 3/14 = ?/? __________ ? - ??

*March 16, 2011*

**MATH**

-9 is a member of which subset of real numbers

*March 9, 2011*

**English**

also check for Capilization!!

*February 24, 2011*

**ENGLISH**

excuse me but I just wanted you to checka nd make sure that my commas was in the right place and if there is any other place I need to put some. I know that it is a little wordless but I am transcribing a message and that is what they said.

*February 24, 2011*

**ENGLISH**

Please read for errors and correct them. Thank you for your request for a credit card with our store. Before we can issue you a credit card, we must ask you to furnish the information on the enclosed credit application. When we receive it we will process your application as ...

*February 24, 2011*

**geometry**

a cable attach to the top of a tv antenna is 100ft long if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?

*February 22, 2011*

**geometry**

a cable attach to the top of a tv antenna is 100 ft. if the cable is fasten to the ground 28 ft from the base of the antenna how tall is the antenna?

*February 22, 2011*

**Life orientation**

Working on holidays. During lunch break.working when you are ill.

*February 21, 2011*

**math**

how do i make this a true sentence? 3=4+3-1/2

*February 16, 2011*

**Finance**

This morning you purchased a stock that will pay an annual dividend of 1.90 per share next year. You require a 12 percent rate of return and annual dividend increases as 3.5 percent annually. What will be your capital gain be on this stock if you sell it 3 years from now?

*February 13, 2011*

**English**

I have to edit these. Add any words needed for grammatical or logical completeness 1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors. 2. Producers of violent video games are not capable or interested ...

*February 4, 2011*

**chemistry**

Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.

*February 2, 2011*