Monday

November 30, 2015
Total # Posts: 528

**math **

A bicycle wheel whose radius is 30 cm covered a distancein 70 revolutions.how many kilometres was this distance
*April 18, 2013*

**math**

The platform is 1 foot by 4 feet by 6 feet. What ha the surface area of the platform?
*April 9, 2013*

**Probability**

An oil-drilling company knows that it costs $25,000 to sink a test well. If oil is hit, the income for the drilling company will be $355,000. If only natural gas is hit, the income will be $130,000. If nothing is hit, there will be no income. If the probability of hitting oil ...
*March 2, 2013*

**Math**

formulate but do not solve the linear programming problem. Tracy has at most $200,000 to invest in stocks,bonds, and money-market funds. She expects anual yields of 15%, 10%, and 8%, respectively, on these investments. If Tracy wants at least $50,000 to be invested in money-...
*March 1, 2013*

**College Algebra**

Develop a tree diagram for tossing two, eight-sided gaming dice to figure out how many possibilities there are. Discuss the purpose of using such a visual in working out probability.
*February 26, 2013*

**College Algebra**

Provide one example to show how you can use the Expected Value computation to assess the fairness of a situation (probability experiment). Provide the detailed steps and calculations.
*February 26, 2013*

**calculus**

Find a formula for the exponential function that satisfies h(2)=22 and h(4)=14.08
*February 16, 2013*

**Math**

Find a formula for the exponential function that satisfies h(2)=22 and h(4)=14.08
*February 16, 2013*

**ENGLISH**

I Need Someone to check my essay for me and give me some input please.
*January 12, 2013*

**Math**

Which function includes the data set (0, -1), (2, 5), (5, 14)? Can you show me how to solve this? A) 3x-1 B) 2x+4 C) 2x+1 D) x+1
*January 10, 2013*

**Statistics**

please help having difficulty with this problem. It was noted that 40% of the people in Dallas read the morning newspaper. A random sample of 18 people is selected from the city. On average, how many people would you expect to read the morning newspaper in a sample of 18?
*December 13, 2012*

**Statistics**

I'm having a problem with this problem. Please help. Thank you.. Find the probability that more than 13 people will read the morning newspaper..
*December 13, 2012*

**Statistics**

Please Help!!! I am having a small Problem Working this Problem. I am just not understanding. Could someone please assist? The lifetime of a brand of DVD player follows a normal distribution with a mean of 8 years and a standard deviation of 6 months. Find the probability that...
*December 5, 2012*

**English**

I have to draw Helen Robinson from To Kill a Mockingbird for English. I have no idea how to start or what she looks like. Any help?
*November 18, 2012*

**Science and Math Combined**

Can someone please help me understand how I figure out how much electricity I used when using a small appliance (lets say 300 watts. For the duration of 3 hours? Does anyone know the formula to figure this out?
*November 14, 2012*

**chemistry**

given 2C6H6+15O2->12CO2+6H2O 1. Starting with a confined volume of 4.80L and O2 with a partial pressure of 223.1 torr at 25 degrees C. C6H6 is in excess. The reaction is allowed to proceed to completion. The container is returned to 25C. Both liquid water and benzene are ...
*November 13, 2012*

**chemistry**

given 2C6H6+15O2->12CO2+6H2O 1. Starting with a confined volume of 4.80L and O2 with a partial pressure of 223.1 torr at 25 degrees C. C6H6 is in excess. The reaction is allowed to proceed to completion. The container is returned to 25C. Both liquid water and benzene are ...
*November 13, 2012*

**finance**

If the principal P=800, the interest I= 384, and time t = 6 years, find the following: What is the rate? What is the future value?
*October 30, 2012*

**Chemistry**

write the conjugate acid of this base. PO4^3-
*October 15, 2012*

**Chemistry**

Balance MgCO3 > CO2 + MgO
*October 15, 2012*

**Chemistry**

At constant temperature, a sample of 3.0L of Argon gas at 2.0 atm is compressed until the new pressure is 3.524 atm. What is the new volume?
*October 13, 2012*

**Chemistry**

How do we prepare 500mL of 0.5 percent w/v solution of NaOH if we have stock solution of 50 percent w/v NaOH on hand?
*October 12, 2012*

**Chemistry**

How would we make 500mL of a 1.5 percent w/v solution of KCl in water?
*October 12, 2012*

**chem**

Ethanol, C2H6O, is very soluble in water. Describe how water dissolved ethanol.
*October 11, 2012*

**Chem**

To a tank already containing N2 at 2.0 atm and O2 at 1.0 atm, we add an unknown quantity of CO2 until the total pressure is 4.6 atm. What is the partial pressure of the CO2?
*October 11, 2012*

**Chem**

How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?
*October 11, 2012*

**Chem**

In carbon monoxide poisoning the hemoglobin is incapable of transporting oxygen to the tissues. How does oxygen get delivered to the cells when the patient is put into a hyperbaric chamber?
*October 11, 2012*

**Chem**

At constant temperature, a sample of 3.0L of Argon gas at 2.0 atm is compressed until the new pressure is 3.524 atm. What is the new volume?
*October 11, 2012*

**Chem**

How would we make 500mL of a 1.5 percent w/v solution of KC1 in water?
*October 11, 2012*

**Chem**

Balance C3H6 + O2 > H2O + CO2
*October 11, 2012*

**Chem**

What is the [H3O+] of an aqueous solution having a pH of 11?
*October 11, 2012*

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?
*October 9, 2012*

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?
*October 9, 2012*

**Math**

The mean of 40 scores is found to be -29. If each score had 5 added to it, and then divided by -4, what would the mean of these new scores be?
*October 9, 2012*

**maths**

how many piece of 3/4 inch long can be cut from a foot long card
*October 4, 2012*

**statistics**

. Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?
*June 12, 2012*

**Am. History**

thank you
*June 10, 2012*

**Am. History**

Evaluate President Kennedy’s performance during the Cuban Missile Crisis. Did he give up too much to the Soviets or were his strategic decision sound?
*June 10, 2012*

**math-Probablity**

46
*June 5, 2012*

**Constitutional Law**

thank you very much for the help
*April 18, 2012*

**Constitutional Law**

are there any websites available that will provide information that can back this up?
*April 18, 2012*

**Constitutional Law**

is the exclusion of evidence that is obtained through an improper search the appropriate response to an improper search or is there a better way to deal with such situation
*April 18, 2012*

**Law**

as always, just what i needed. thank you very much.
*April 7, 2012*

**Law**

How have Congress and the courts justified placing limits on the freedom of speech?
*April 7, 2012*

**Sign Language**

English: What will the weather be like today? ASL: TODAY WEATHER LIKE WHAT? English: The sun will be out and it will be windy. ASL: WILL SUNSHINE (shoulder shift) WIND. English: I thought it was going to rain. ASL: ME THINK SHOULD RAIN English: It is going to rain tomorrow on ...
*April 4, 2012*

**math**

what is 3/8, 1/4, 3/4 in order from least to greatest
*March 27, 2012*

**algebra**

$6300 is invested, part of it at 10% and part of it at 69%. For a certain year the total yield is $598.00. How much invested at each rate?
*March 26, 2012*

**Economics**

Would the correct answer be : d. By consumers and suppliers interacting through market forces
*March 15, 2012*

**Economics**

How does a laissez faire economy make the decision about what goods and services will be produced? a.) Lawmakers in government vote on what will be produced b.) Producing firms decide what they choose to produce, cusumers will follow c.) What will be produced is determined by ...
*March 15, 2012*

**what does this mean?**

What does it mean when my teacher says "quantify your conclusion." ???
*March 6, 2012*

**Budgeting**

A well-established coffee shop, the Hot New Café, wants to build a new café for increased capacity. It’s expected sales are $800,000 for the first 5 years. Direct costs including labor and materials will be 50% of sales. Indirect costs are estimated at $100,...
*March 5, 2012*

**Constitutional Law**

That is exactly what I needed, thank you very much.
*February 29, 2012*

**Constitutional Law**

What authority stems from the necessary and proper clause? just wanting some links that will help get the ball rolling please.
*February 29, 2012*

**COLLEGE CALCULUS. HELP!**

thanks byant
*February 28, 2012*

**COLLEGE CALCULUS. HELP!**

i got the result number 1 is cos(x)cos(sin(x)). im still stuck with number 2.
*February 28, 2012*

**COLLEGE CALCULUS. HELP!**

i dont know how to start this problem. i dont like cos and sin. im so confuse. 1.f(x)=sin(sin(x)), find f'(x) 2.f(x)= 4sin^4x, find f'(x). this problem i couldnt find it in my math book. i never see it before. because of sin exponent 4 -->sin^4
*February 28, 2012*

**Math**

What is 1/2+1/3 EQUAL
*February 27, 2012*

**COLLEGE CALCULUS. HELP!**

1. If f(x)=sin(x^2), Find f'(x) and f'(1) 2. If d/dx(f(3x^3))=9x^2, Calculate f'(x). 3. Let f(x)=cos(6x+6), find f'(x) 4. Let f(x)=-2sec(2x), find f'(x)
*February 27, 2012*

**Calculus**

a ladder is 20 feet long and its top is slidding at a constant rate of 2 feet per second. How fast is the bottom of the ladder moving along the ground when the bottom is 16 feet from the wall?
*February 22, 2012*

**Chemistry**

How much energy in Joules is released from the complete combustion of one mole of glucose?
*February 17, 2012*

**trig**

Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line on ,find the measure of theta in degrees.
*February 8, 2012*

**Physics **

You are driving south on a highway at 24.0 m/s (approximately 54 mi/h) in a snowstorm. When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 26.6° to the horizontal. Calculate the speed ...
*February 7, 2012*

**Physics **

A hunter aims directly at a target (on the same level) 61.0 m away. If the bullet leaves the gun at a speed of 176 m/s, by how much will it miss the target? At what angle should the gun be aimed so as to hit the target?
*February 5, 2012*

**Physics**

Thanks so much!!! If you have time can you help me figure out their max speeds?
*February 2, 2012*

**Physics**

In a 100 m race, Maggie and Judy cross the finish line in a dead heat, both taking 10.6 s. Accelerating uniformly, Maggie took 2.20 s and Judy 2.90 s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration?
*February 2, 2012*

**algebra**

-5-y-1=0 -6 = y -6 = x+1 -7 = x
*February 2, 2012*

**sociology**

thank you so much for clearing that up, you are the best
*January 27, 2012*

**sociology**

the only thing that i get from the reading material that is provided to me is: the obstruction that terrorism places on the pursuit of peace is the unknown (the fact that it is hard to figure out who the terrorist is and whom they are acting on behalf of) I just did not know ...
*January 27, 2012*

**sociology**

what is the obstruction that terrorism places on the pursuit of peace and what approaches to peace are deterred by terrorism
*January 27, 2012*

**criminal investigations**

how does investigating a robbery differ from investigating an assault
*January 26, 2012*

**geometry**

The legs of a right triangle measure 3x 8. A cube has edge lengths and 15. If the hypotenuse measures of 6 inches. What is the 3x+3, what is the value of x?
*January 23, 2012*

**physics**

How long does it take a 25 kW steam engine to do 5.6 × 10^7J of work? Answer in units of s
*January 5, 2012*

**Calculus**

Thank you so very much for your help....
*December 11, 2011*

**Calculus**

Stuck on this problem. Please help! 1+u^4/u du
*December 11, 2011*

**math**

The median weekly earnings for people working in sales is $450. Assume that the weekly earnings are approx. normally distributed with a standard deviation of $90. What is the mean weekly earnings for people working in sales?
*December 11, 2011*

**Math**

The median weekly earnings for people working in sales is $450. Assume that the weekly earnings are approx. normally distributed with a standard deviation of $90. What is the mean weekly earnings for people working in sales?
*December 10, 2011*

**physics**

An ore car of mass 42000 kg starts from rest and rolls downhill on tracks from a mine. At the end of the tracks, 6.8 m lower vertically, is a horizontally situated spring with constant 3.8 x 10^5 N/m. The acceleration of gravity is 9.8 m/s^2. How much is the spring compressed ...
*December 8, 2011*

**Calculus**

Thank you so much. I had the integral part, but was off on the rest. :)
*December 2, 2011*

**Calculus**

definite Integrals (using fundamental Theorem) Evaluate from -1 to 2(x^2 - 4x)dx
*December 2, 2011*

**Math**

Which probability interpretation is most reasonable to use: relative frequency, subjective, or classical? The probability your company's sales will exceed seven million dollars this year. Is this relative frequency? The probability that the S&P will increase or decrease by...
*November 19, 2011*

**Math**

Thanks!!
*November 19, 2011*

**Math**

That's the question in my textbook. I thought it wasn't possible. So the answer would be 0. Correct?
*November 19, 2011*

**Math**

What is the probability of rolling a two and a five in a single toss of a die?
*November 19, 2011*

**Pre-Calculus**

Thank you Steve. But i'm still a little confused. The answer in my answer list shows minimum as 620 at t=3.?
*November 19, 2011*

**Pre-Calculus**

This is application question. Bacterial Control. If t days after treatment the bacteria count per cubic centimeter in a body of water is given by C(t) = 10t^2 - 120x + 800 0 <= t <= 9 Thn in how many days will the jcount be a minimum? I got this result: 20(t^2 - 6 + 40) ...
*November 19, 2011*

**Pre-Calculus**

Thank you so much. This is a great help. I can see where I started to go wrong.
*November 19, 2011*

**Pre-Calculus**

I'll rewrite the equation. y = f(x) = x^3 -12x + 12 -3 <= x >= 5
*November 19, 2011*

**Pre-Calculus**

I'm having problems solving this and showing the steps: Find the absolute maximum and absolute minimum, if either exists, for y = f(x)= x^3 - 12x + 12 -3 less equal to x greater than equal to 5
*November 19, 2011*

**Pre-Calculus**

Thank you so much for your help. Now that I look at it more closely. I understand what I wasn't seeing!
*November 19, 2011*

**Pre-Calculus**

Need help with the following along with all steps. Find y" for y = 3x + 4/x
*November 19, 2011*

**laguadia**

we are 95% confident that the mean number of weekly hours that u.s. adults use computers at home is between ?
*November 18, 2011*

**chemistry**

Assuming that the total volume does not change after 0.200 g of KCl is added to 1.0 L of a saturated aqueous solution of AgCl, calculate the number of moles of Ag+ ion in the solution after equilibrium has been reestablished. For AgCl, Ksp = 1.8 × 10¯10
*November 16, 2011*

**Eng comp**

thank you, I really like that website
*November 8, 2011*

**Eng comp**

which of the following statements about arguments is true -they always involve a direct conflict -they are always about something that has not yet been decided -they always call for some kind of action on the part of the reader -they try to establish some common ground with ...
*November 8, 2011*

**comp**

To avoid financial hardship during your golden retirement years, it is important not to depend on Social Security benefits. Is this a proper topic sentence, the subject is about Social Security being around in the future or not? Thank you!
*October 13, 2011*

**history **

The Indo-European migration brought many changes to several ancient civilizations. What major civilizations were impacted and what changes did they bring?
*October 9, 2011*

**Chemistry**

132. Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated...
*October 5, 2011*

**Physics**

A ball is thrown horizontally from a height of 29 m and hits the ground with a speed that is 4 times its initial speed What is the initial speed
*September 29, 2011*

**chemistry**

What are the major products produced by heating the following isomeric alkyl bromides with NaOEt? Name the products.
*September 26, 2011*

**math**

how many shelves measuring 8 in by 12 in can be made from a 36 in by 56 in plywood?
*September 26, 2011*