# Posts by erica

Total # Posts: 613

**History**

Was the answer to this question ever determined?

*September 28, 2011*

**Math**

^^^kids

*September 21, 2011*

**business**

Amyris Biotechnologies was building a plant in 2009 and had synthetic technology to change sugarcane to fuels and chemicals that can be renewed. Their marketing firm was looking for a chemical and a fuel that could be recycled for future use. In 2011, it was decided that the ...

*September 21, 2011*

**Speech**

Oh okay I see now. It's just seemed kind of confusing because I have never had a speech class before.

*September 21, 2011*

**Speech**

Scrapbooking can be fun and release stress and it can be a good memory for yourself and for your loved ones especially if you have kids. You can also make birthday cards and invitations. More than anything scrapbooking can help you be creative. Does that make sense :/?

*September 21, 2011*

**Speech**

My speech can be about anything so I'm going to write and talk about scrapbooking because that is something I enjoy doing.

*September 21, 2011*

**Speech**

Hi I have a speech to present and my professor gave me the outline on how to prepare it but I'm having a hard time setting it up. Is their any kind of way you can help me. Thank you, Erica

*September 21, 2011*

**Acct**

Journalize the following transactions -Received cash from investment made by owner,$15000. Received cach providing accounting services, $8000. Billed customers on account for providing services, $4000. Paid Advertising expense 400. Received cash from customers on account 3500.

*September 20, 2011*

**College English**

I need to write a 700 word essay on what my name means. Can I please get some help!!!

*September 19, 2011*

**English**

It needs to be with my first name which is "Erica". Sorry I am new to this website and I did not see your question.

*September 19, 2011*

**English**

I have to write a 700 word essay on what my name means ????????????? And I need help!!!!

*September 19, 2011*

**Science**

What is the pressure at the bottom of a tube of mercury that is 0.2 m deep? An elephant with a mass of 1000 kg stands on a circus platform that weighs 50 kg. The area of the bottom of the platform is 1.25 m². How much pressure is exerted on the floor beneath the platform...

*September 15, 2011*

**SCIENCE**

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a plastic cup filled with ...

*September 15, 2011*

**SCIENCE**

When the following are placed in water, for which of them will the buoyant force be more than as its weight? A) an ice cube B) a piece of frozen glycerin C) a gold ring D) a piece of aluminum foil 2. Sometimes when I get in my swimming pool I take a plastic cup filled with ...

*September 15, 2011*

**Science**

thanks so much

*September 11, 2011*

**Science**

A satellite orbiting at an elevation of 3200 km does what a) Stays beyond the earth's gravity, which is why it stays up there. B) in an elliptical orbit, since its speed is less than the escape velocity. C) Falling toward earth with an acceleration equal to g. D) Falling ...

*September 11, 2011*

**Algebra**

5(2n + 4) - 3(4n - 6) = 2(20 - n) I solved this equation and this is what I got. 10n + 20 - 12n + 18 = 40 - 2n -2n + 38 = 40 -2n 38 ≠ 40 What does this mean? Thank you!

*August 31, 2011*

**Chemistry**

A mixture of gases at 760.0 torr contains 35.0% nitrogen, 22.0% oxygen , and 43.0% carbon dioxide by volume. What is the pressure of the carbon dioxide gas in torr?

*August 19, 2011*

**Greek**

The Greek base HELI- means?

*July 19, 2011*

**anatomy and physiology 1**

which membrance surround and protect the vital organs in the chest cavity?

*July 15, 2011*

**anatomy and physiology 1**

give examples of the various tissue types that exist in your arm. please help me test monday.

*July 15, 2011*

**anatomy and physiology 1**

describle two vision disorders that cause abnormal eyeballshape.

*July 15, 2011*

**algebra II**

Simplify: a^4-b^4/a-b

*July 3, 2011*

**algebra II**

Simplify: (3c^2)(-6cd)^-2

*July 3, 2011*

**physics**

Find the final velocity of the two balls if the ball with velocity v2i = -19.5 cm/s has a mass equal to half that of the ball with initial velocity v1i = +26.8 cm/s. PLEASE HELP!! i have tried so many different ways and can't seem to get the answer

*June 2, 2011*

**physics**

Find the final velocity of the two balls if the ball with velocity v2i = -19.5 cm/s has a mass equal to half that of the ball with initial velocity v1i = +26.8 cm/s.

*June 2, 2011*

**calculus**

3. A deposit of ___(i)___is made into an account paying an interest rate of 5% compounded annually. How many annual payments of ___(iii)___can be made from this account? a) (i)$100,000 (ii)$10,000 b) (i)$200,000 (ii)$20,000 c) (i) 10x (ii) x d) (i) 10x (ii) x at r% compounded ...

*June 1, 2011*

**global history**

the wealth that enabled the Italian city-states to lead in the development of Renaissance arts was derived mainly from? a)the quantities of gold and silver brought back to Italian explorers b)concentration of riches in the hands of the king and his court c)their participation ...

*May 31, 2011*

**physical science**

you are standing on a street corner, and you hear a fire truck approaching. does the pitch of the siren stay constant, increase, or decrease as it approaches you? does the pitch of the siren stay constant, increase, or decrease as it moves away?

*May 23, 2011*

**stats**

A company with a large fleet of cars found that the emissions systems of 18 out of the 65 randomly selected cars they tested failed to meet pollution control guidelines. Is this strong evidence that more than 20% of the fleet might be out of compliance? Test the appropriate ...

*May 11, 2011*

**Calc**

To what limit does the sequence Sn = (3+n) /3^n converge as n approaches infinity?

*May 3, 2011*

**Calc**

How do you know what shape the graph in the xy-plane represented by x=3sin(t) and y=2cos(t) is?

*May 3, 2011*

**calc**

The rate that an object cools is directly proportional to the difference between its temperature ( in Kelvins) at that time and the surrounding temperature (in Kelvins). If an object is initially at 35K, and the surrounding temperature remains constant at 10K, it takes 5 ...

*April 25, 2011*

**Calc**

A particle moves along a path described by x=cos³t and y=sin³t. The distance that the particle travels along the path from t=0 to t=π/2 is... Thank you!

*April 25, 2011*

**calc**

If f(x)= (3x)^(3x), then f'(x) = ? Thank you!

*April 25, 2011*

**Calc**

What is the volume of the solid generated by rotating about the y-axis the region enclosed by y=sinx and the x-axis, from x=0 to x=π? Thank you for your help!!

*April 25, 2011*

**calc**

If a particle moves in the xy-plane so that at time t>0 its position vector is (e^(t²), e^(-t³)), then its velocity vector at time t=3 is...? Thanks so much!

*April 25, 2011*

**Calc**

Find the integral from 1 to 0 of arcsin(x)dx Thank you!

*April 25, 2011*

**Calc**

Use differentials to approximate the change in the volume of a cube when the side is decreased from 8 to 7.99 cm. (in cm^3) Thank you so much!!

*April 25, 2011*

**Calc**

Use differentials to approximate the change in the volume of a cube when the side is decreased from 8 to 7.99 cm. (in cm^3) Thank you so much!!

*April 25, 2011*

**Calc**

What is the limit as x approaches infinity of 4xsin(1/x)? Can you also show me how you get the answer? Thank you so much!!

*April 25, 2011*

**goverment**

For the first eleven years of its existence, the United States was a _____.

*April 12, 2011*

**macroeconomics**

a description of a specific macroeconomic phenomenon or event and how it has impacted you

*March 30, 2011*

**hcs 341**

How can an organization forecast future staffing needs in order to maintain consistent staffing levels?

*March 18, 2011*

**social studies**

Christopher Columbus' treatment of Native Americans can BEST be described as friendly, peaceful but not friendly, violent& hostile,or fair?

*March 11, 2011*

**Chemistry**

What is the percentage of potassium chloride to oxygen?

*March 7, 2011*

**Chemistry**

What is the percentage of potassium chloride to oxygen?

*March 7, 2011*

**Calc**

I have to find the integral of 1/(sq. rt. of (4x-x²)) dx. I know I have to complete the square of the denominator, but im confused on how that process works when im only given 4x-x². Could you demonstrate how to complete the square for that equation? Thank you so much!

*February 22, 2011*

**Calc**

The line y = mx+b with b≥2 is tangent to the graph f(x) = -2(x-2)² + 2 at a point in the first quadrant. What are all possible values of b?

*February 22, 2011*

**Calc**

If dy/dt = 2y/(t(t+2)) for t>0 and y = 1 when t = 1, then when t = 2, y = ?

*February 22, 2011*

**Calc**

A rectangle is to be inscribed in a semicircle of radius 8, with one side lying on the diameter of the circle. What is the maximum possible area of the rectangle?

*February 22, 2011*

**calc**

If dy/dx = xy - y^2 and y(1) = 3, then y (2) = ?

*February 22, 2011*

**Calc**

If n is a positive integer, find the limit as n approaches +∞ of 1/n(sin (π/n) + sin (2π)/n + ... + sin (nπ)/n)

*February 21, 2011*

**Calc**

Let f(x) = x^3 - 7x^2 + 25x - 39 and let g be the inverse function of f. What is the value of g'(0)?

*February 21, 2011*

**Calc**

If the substitution u=x^2 + 1 is made, then the integral from 0 to 2 of [(x^3)/(x^2 + 1)]dx = ? Thank you for your help!

*February 21, 2011*

**chemistry**

at 327 degrees C, the equilibrium concentrations are [CH3OH]=0.15M, [CO]=0.24M, and [H2]=1.1M for the reaction: CH3OH(g)<-->CO(g)+2H2(g) Calculate Kp at this temperature

*February 16, 2011*

**Calc**

Find the indefinite integral. Integral of [1/(4+3x²)]dx Thank you so much for your help!

*February 16, 2011*

**Calc**

Find the indefinite integral. Integral of (2x)/(x-4)dx Thank you so much!

*February 16, 2011*

**Calc**

Find the indefinite integral. Integral of (x+1)/(√(x²+2x-4))dx Thank you for your help!

*February 16, 2011*

**Calc**

What is the antiderivative of dy/dx = x/(x^2 + 1)?

*February 15, 2011*

**Calc**

The base of a solid is a circle of radius a, and its vertical cross sections are equilateral triangles. The volume of the solid is 10 cubic meters. Find the radius of the circle.

*February 10, 2011*

**human resource management**

Which of the following would not be an informative or positive message? a. Summary b. Claim adjustment C. Transmittal d. Direct request

*February 8, 2011*

**HUMAN RESOURCE MANAGEMENT**

When writing informative and positive messages, you should include reader benefits when:

*February 8, 2011*

**human resource management**

Informative and positive messages are not necessarily short: Instead , the length of a message depends on all the following EXCEPT:

*February 8, 2011*

**math**

Look at a multiplication table.

*February 7, 2011*

**problem solving**

Try to first multiply it. You should get your answer correct that way. :-)

*February 7, 2011*

**Writing**

what is your guess?

*February 7, 2011*

**REPORT CARD QUESTION**

cooll!

*February 7, 2011*

**Measurments**

What don't you understand the inches or the millimeters?

*February 7, 2011*

**Math**

go to google and type in ixl then click on the website. click on first grade. try this site, and let me know if this helps. :-)

*February 7, 2011*

**Math**

What grade is he in?

*February 7, 2011*

**Math**

Okay is it 1 or i?

*February 7, 2011*

**Math**

Your question is not a question. What are you asking help for? 52 and what number?

*February 7, 2011*

**8th grade science**

Is predator-prey the most important ecological relationship? Thanks everyone!

*February 7, 2011*

**8th grade science**

YESS!!! you are a life saver! ;-)

*February 7, 2011*

**8th grade science**

HELP!!!

*February 7, 2011*

**8th grade science**

On one of my tests they are asking me if Symboin pandora has a symbotic reletionshio with the Norway Lobster. In my lesson the answer is yes but with the NORWEIGAN lobster. Is this a typo or are the two lobsters the same lobster but with different names? I am soooo.... ...

*February 7, 2011*

**Calc**

Set up and evaluate the definite integral for the area of the surface generated by revolving the curve about the y-axis. y = cube rt. (x) + 2 Thank you so much!!

*February 7, 2011*

**Calc**

Set up and evaluate the definite integral for the area of the surface generated by revolving the curve about the x-axis. y = (x³/6) + (1/2x), 1≤ x ≤ 2

*February 7, 2011*

**Calc**

Find the arc length of the graph of the function over the indicated interval. y = (x⁵/10) - (1/(6x³)) , [1,20] Thank you so much!!

*February 6, 2011*

**Calc**

What is the area bounded by the graphs of y = 4x - x² and y = x? Thank you!!

*February 2, 2011*

**Calc**

What is the area of the region located between the graphs of y = -x² + x + 4 and y = 2? Thank you so much!

*February 2, 2011*

**Calc**

How do you integrate sin²x?

*February 2, 2011*

**Calc**

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y = sin x, y = 0, x = 0 I just need help setting up the formula. So far I got V= the integral from 0 to pi of [(sin²x) - 0²]dx. Is that correct? ...

*February 1, 2011*

**Pre-Calculus-Trig**

77

*January 30, 2011*

**physics**

I do not know

*January 24, 2011*

**Calc**

The slope of a curve at each point (x,y) is given by 4x - 1. Which of the following is an equation for this curve if it passes through the point (-2,3)? A) y=4x²-x-15 B) y=x²-4x-9 C) y=2x²-x-7 D) y=2x²-x E) y=2x²-x+7

*January 23, 2011*

**Calc**

Given function f defined by f(x) = ( 1- x)³. What are all values of c, in the closed interval [0,3], that satisfy the conditions of the Mean Value Theorem?

*January 23, 2011*

**Calc**

A rectangular box, with a square base and open at the top is to be constructed. If the volume of the box needs to be 108 cubic feet, what is the minimum surface area?

*January 23, 2011*

**Calc**

Various values for the derivative, f'(x), of a differentiable function f are shown below. x=1, f'(x) = 8 x=2, f'(x) = 4 x=3, f'(x) = 0 x=4, f'(x) = -4 x=5, f'(x) = -8 x=6, f'(x) = -12 If f'(x) always decreases, then which of the following ...

*January 21, 2011*

**Calc**

y = x^2 y = 6 - x Find the area of the region by integrating (a) with respect to x and (b) with respect to y.

*January 18, 2011*

**Calc**

y = x^2 y = 6 - x Find the area of the region by integrating (a) with respect to x and (b) with respect to y.

*January 18, 2011*

**Calc**

If y = (cos²x)/(1 + sin x), then dy/dx = ?

*January 18, 2011*

**Calc**

If y = (sec x)/(tanx), then dy/dx = ?

*January 18, 2011*

**Calc**

Limit as x approaches +∞ of x sin (1/x)

*January 18, 2011*

**Calc**

Find the limit as x approaches 0 of (sin x)/(x + tan x)

*January 18, 2011*

**Calc**

Find the limit as h approaches 0 of sin²(3x+3h) - sin²(3x) / h

*January 18, 2011*

**Calc**

Find the limit as x approaches π of (cos x +1)/(x-π)

*January 18, 2011*

**health, safety, and nutrition for the young child**

a child who moved from throwing a ball using only an elbow movement to throwing a ball using her elbow, wrist, and shoulder is showing signs of _____ development. (a)intertask (b)spatial (c)joint-plate (d)intratask

*January 17, 2011*

**Anatomy and Physiology**

Urine passes from the bladder to the outside of the body through a tube called the .Urethra Muscles are attached to bones by structures called .Tendons Communication, integration, and control are the primary functions of two body systems called and . Nervous and Endocrine The ...

*January 12, 2011*