# Posts by greg

Total # Posts: 471

**algebra II**

Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5 - 2x; h(x) = -x2 Solve f(g(-1))

*October 19, 2010*

**math**

could someone show me how to write this or set up this equation?2 ships sail from the same port, one sails dew east at 15 mph and the second sailed dew south at 20 mph, how far apart are the ships after 3 hours?

*October 19, 2010*

**math**

2 ships sail from the same por, one sails dew east at 15 mph and the second sailed dew south at 20 mph, how far apart are the ships after 3 hours? could you show the how you set this problem up?

*October 19, 2010*

**math**

the length of a calculus book is 2 inches more than the width. the perimeter is 36 inches find the width

*October 10, 2010*

**11th grade Algebra**

The answer to this question is -3. The equations work out to be -3n-7=-2n-4, and then you can just work it out for yourself.

*October 3, 2010*

**physics**

Whoops. Slope = Change in y / change in x

*September 29, 2010*

**physics**

Slope = Change in y / change in y How much did y change between the two points? How much did x change between the two points? Divide them.

*September 29, 2010*

**Gradient Vector Fields in Mathematica 7**

How would you plot the gradient vector field of f(x,y)=x^2-3*x*y+y-y^2 on the domain [-4,4]*[-4,4] in Mathematica 7? I know the function is "VectorPlot" (h t t p : / / g o o . g l / p c S f), but I don't know how to isolate the x and y inputs because of the -3*x*...

*September 29, 2010*

**Math**

Thank u ms. Sue. :)

*September 23, 2010*

**Math**

5/8y=40

*September 23, 2010*

**Physics**

Nevermind everyone, I've got it.

*September 22, 2010*

**Physics**

In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the coefficient of static ...

*September 22, 2010*

**physics**

Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s2 lasting for at least 1 ms ...

*September 19, 2010*

**biology**

hello?????????????????????????????????!!!!!!!!!!!!!!!!!!!!!!!!!!

*September 13, 2010*

**biology**

_________ occur when bonds are broken or formed

*September 13, 2010*

**biology**

an atom that gains for loses electrons has an electrical charge and is called an _____.

*September 13, 2010*

**physics**

In the diagram below, qA = 9.8 µC & qB = -1.4 µC. There is no charge at point C. The distance between A & C is 2.1 cm and the distance between B & C is 9.6 cm. Find the electric potential at point C

*September 13, 2010*

**math**

i think -5 + n

*September 13, 2010*

**6th grade/math**

8 and 3.

*September 10, 2010*

**physics**

If your mass is 56 m/s, what is your acceleration? ____m/s

*September 9, 2010*

**science**

You observe that one fox eats 100 rabbits each year. You have the idea that every increase of one in the fox population will cause the rabbit population to decrease by 100.

*September 9, 2010*

**science**

Looking to check the mathematical formula for this: You learn that for every 1,000 meters you rise in the atmosphere, the temperature drops by 6 degress C. You have the idea that if you know the temperature at the base of a mountain and its height, you can figure out the ...

*September 9, 2010*

**math**

F-R=T?? Something seems to be missing.

*September 9, 2010*

**math**

I do not understand how to arrive at the mathematical representation. Thanks.

*September 9, 2010*

**math**

Thanks. I just could not figure out the mathematical representation to illustrate the above.

*September 9, 2010*

**math**

Tka for the assist.

*September 9, 2010*

**math**

D= ___M___ V

*September 9, 2010*

**math**

OOOh - that one stumped me. Thanks.

*September 9, 2010*

**8th grade,math/probability**

2/23 PROBLY

*August 31, 2010*

**english 1**

the couple ordered soup hors d' oeuvres at the wedding

*June 22, 2010*

**Algebra**

Thanks for the help!

*June 10, 2010*

**Algebra**

yes

*June 10, 2010*

**Algebra**

4 sqrt 32 -3 sqrt 2=

*June 10, 2010*

**Algebra**

Solve (x+12)(x-10)(x+3)>0 Solution set is:

*June 9, 2010*

**algebra**

Thanks, I kept coming up with strange answers. That makes sense.

*June 3, 2010*

**algebra**

find the x and y intercepts: f(x)=-x^2 +3x+10

*June 3, 2010*

**Calculus**

a can containing 54 in cubed of tuna and water is to be made in the form of a circular cylinder. What dimensions of the can will require the least amount of material?

*May 27, 2010*

**algebra 2**

In the matrix below, which element is a1,2? 1 4 7 2 5 8 3 6 9 A. 8 C. 6 B. 5 D. 2 Examination

*May 16, 2010*

**Political Science**

I need help on this. What does the term red tape mean, and how does it relate to the federal bureaucracy? To what extent is Congress to blame for bureaucratic red tape? What are some of the benefits of the federal bureaucracy? What are some of the drawbacks to the current ...

*April 29, 2010*

**religion**

this is what I have wrote so far There are many types of religions that exist in our world. With the emergence of so many cultures in the United States comes the existence of numerous religious views. While religions may differ in their goals and in the way they envision and ...

*April 19, 2010*

**religion**

that is my problem it is suppose to be a 350-500 word summary and I will never be able to do it in that many words

*April 19, 2010*

**religion**

what are major similarities and differences among the different religious groups like Atheist, Buddhist Baptist, Catholic, Protestant, Methodist, Hindu, Islam, Jehovah's Witnesses, Mormon Sikh Judaism

*April 19, 2010*

**math-slope**

slope = -2 y intercept = -3

*March 28, 2010*

**math- CAN SOMEONE PLEASE HELP**

Y = mx + B m= slope x= x coordinate y= y coordinate b= y-intecept thus, 5/3 is the slope and 8 is the y-intercept.

*March 28, 2010*

**Algebra**

If a bottle and a stopper costs $1.10. How much does the stopper cost?

*March 28, 2010*

**calculus**

Find the coordinates of all points on yhe graph of y= 1-x^2 at which the tangent line passes through the point (2,0).

*March 23, 2010*

**Math**

0.3(11x+4) greater than 2.1-(x+8)

*March 21, 2010*

**Physics**

At an amusement park, a swimmer uses a water slide to enter the main pool. The swimmer slides without friction, and descends through a vertical height of 2.89 m. Find the swimmer's speed at the bottom of the slide if she starts with an initial speed of 0.870 m/s.

*March 9, 2010*

**math**

Identify n(S) for the given set S = { 5, 10, 15, 20, 25, 30, . . .}

*March 1, 2010*

**math**

Express the ratio in simplest form. 48 feet to 20 feet

*February 21, 2010*

**Math**

42 divided by 2=21 , 21-12=9, 9+21=30,30+12=42

*February 4, 2010*

**Sci**

cool thanks!

*December 10, 2009*

**Sci**

what are good materials to make a wind powered car out of? i mean a fake car like milk jugs stuff like that

*December 10, 2009*

**sci**

no, i mean a fake car like milk jugs stuff like that

*December 10, 2009*

**sci**

what are good materials to make a wind powered car out of?

*December 10, 2009*

**MATH**

solve for x, 4 1/2 + x = 6 1/6

*December 2, 2009*

**Calc**

A metal cable has radius r and is covered by insulation, so that the distance from the center of the cable to the exterior of the insulation is R. The velocity v of an electrical impulse in the cable is v = -C(r/R)^2*ln(r/R) where c is a positive constant. Find the following ...

*December 2, 2009*

**English**

Hamlet: I need to look at the passages from Acts IV and V and assess their impact within the context of the whole play. I have already done so and it's giving me these questions using a passage. I need some help, please. :) Passage 1: " Now, whether it be Bestial ...

*November 30, 2009*

**English**

I need help with this. “What is Hamlet ‘about’?” and “What are its enduring themes and messages?”. The responses you provide do not have to be governed by the Values and Worldviews (Dialectic) approach. Substantiate your own ideas with evidence ...

*November 29, 2009*

**spanish**

It should be abrázame fuerte, which means "hold me tight". The other is toda la noche which means "all night". brasa mi puerta means "grill my door" LOL

*November 21, 2009*

**physics help!!!**

wow, my apology. im sorry. i was expecting to get explainations and get the right equations. im very interesting in physics and i found this great website. you all are very helpful! so i thought i could get as much help as i could. AND you said that i can repost some questions...

*November 17, 2009*

**physics help!!!**

What is the minimum work needed to push a 900 kg car 460 m up along a 17.5° incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.30?

*November 17, 2009*

**8th Grade Science**

It slows down the the dissolving process due to the vicosity of the gas;the gas particules are always together which make the particules move slower but they stay stronger

*November 17, 2009*

**Maths**

change so x is the subject y=2/x and y=-n/x the minus is for the whole fraction please show your working thanks in advance :)

*October 31, 2009*

**Maths**

how would you work out y=2/x and y=-n/x the minus is for the whole fraction please show your working thanks in advance :)

*October 31, 2009*

**Maths**

The book states that the answer is one and a third i got the same answer as Rachel

*October 30, 2009*

**Maths**

x/2 + x/4 = 1 the answer is 1 1/3 can you show me the method please thanks in advance :)

*October 30, 2009*

**Statistics**

For df = 25, determine the value of A that corresponds to each of the following probabilites: a. P(t >- A)= 0.025 b. P(t <- A)= 0.10 c. P(-A <- t <- A)=0.99

*October 3, 2009*

**science**

Hi Ali :)

*September 23, 2009*

**english**

how does the text "lord of the flies" relate to journeys?

*September 10, 2009*

**us history**

In what ways does the Magna Carta still impact law?

*June 24, 2009*

**Physics**

You are told that the volume of a sphere is given by V=(sqrt)d^3/4, where V is the volume and d is the diameter of the sphere. Is this equation dimensionally correct?

*June 20, 2009*

**Physics**

Roughly how high could a 305 K copper ball lift itself if it could transform all of its thermal energy into work? Copper has a specific heat of 386J/kg * K measured near room temperature (293 K) and atmospheric pressure.

*March 20, 2009*

**chem**

Is this a good way to define crystallization: decreasing the temperature or evaporating the solvent can create crystals?

*March 11, 2009*

**chemistry help**

45

*March 8, 2009*

**english**

The essay has to be 350 words What I learned in Home School Home school is easer than public school. I am able to learn all the same subject at home as I did in public school. I am also able to learn other things that you are not able to do in public school. History taught me...

*February 26, 2009*

**Math-Factoring**

Hey I need help factoring 5x^4-180x^2. I'm used to factoring with three numbers, and not two. How would you do just two like this? Thanks

*January 19, 2009*

**pre-algebra**

You want to paint a wall that is 8 3/4 feet high and 11 1/4 feet long. You have a can of paint that will cover 200 square feet with one coat. A. find the area of the wall. b. if you want to apply two coats of paint , do you have enough paint? explain

*January 7, 2009*

**science**

a device that uses electicity to a force to move things

*January 7, 2009*

**5th grade math**

um so number 2 is -1.667? and 3 and 4 is what i don't understand

*January 6, 2009*

**5th grade math**

write the fraction or mixed number as a decimal. 1/5 -5/3 3 4/25 8 5/44

*January 6, 2009*

**Math**

Solve this Equasion x=2y 4x+y=12 using the substitution method. Please give solution

*December 24, 2008*

**math**

to join a gym your friend pays a one-time fee of $75 and $45 per month for the duration of the membership.Your friend has paid a total of $345.How long has your friend been a member of the gym??

*December 10, 2008*

**6 grade**

to join a gym your friend pays a one-time fee of $75 and $45 per month for the duration of the membership.Your friend has paid a total of $345.How long has your friend been a member of the gym??

*December 10, 2008*

**algebra with pizzazzi**

Need help why are Mr and Mrs number so happy?

*December 5, 2008*

**help plzzz**

this is what i do with all my math work

*December 3, 2008*

**calculus**

Consider the function f(x)=12x^5+30x^4–160x^3+5 . f(x) has inflection points at (reading from left to right) x=D , E , and F D= E= F=

*November 25, 2008*

**calculus**

f(x)=x^3/(x^2-1) find the regions of concavity and inflection points

*November 25, 2008*

**Math**

Describe an application for the use of ratios or proportions

*November 22, 2008*

**7th grade**

explain the usefulness of algebra in modern mathematics.

*November 9, 2008*

**physics**

Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.

*November 7, 2008*

**physics**

Consider the 59 N weight held by two cables The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N.

*November 7, 2008*

**Critical Thinking**

THE STATED PREMISE MAKES SENSE, BUT THE CONCLUSION IS STILL VAGUE

*September 29, 2008*

**Math**

If the area of the base of a cone is 25 pi square units, express the volume of the cone as a function of its height?

*September 11, 2008*

**Accounting**

When the net price method of recording purchases is used, the debit to purchases is for:

*August 10, 2008*

**math-116 final is it a timed test?**

It is not a timed test

*June 22, 2008*

**physics**

Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d.

*May 28, 2008*

**Applied Math- Gr.11**

A farmer wants to enclose three sides of a rectangular pasture unsing 1000 yards of fencing. The fourth side does not require fencing because it borders a river. What dimensions (length and width) should the farmer choose in order to enclose the greatest area? a) Find at least...

*May 1, 2008*

**physics**

Okay the second one is the third answer because something like M(a+g) where m is the weight a is the acceleration and g was 9.8 so I got 844.87 the first one I still cant figure it out.

*April 30, 2008*

**Physics**

If an airplane is moving at a constant velocity of 400 m/s for 20 s, what is its acceleration during this period? 0 m/s squared 20 m/s squared 40.82 m/s squared need more information wouldnt it be need more information because isnt acceleration ending velocity minus starting ...

*April 29, 2008*