Monday
December 22, 2014

Posts by greg


Total # Posts: 415

Math - Properties of Logarithm
Can someone show how to this question. Loga(x+3) + Loga(x-3) = 3 I don't know if I'm typing this correctly the a is the base. So, I'm thinking, Loga((x+3)(x-3)) = 3 (x+3)(x-3) = 3^a x^2 - 9 = 3^a, x^2 = 3^a + 9 x = sqrt(3^a + 9) but now I'm stuck, I don't ...
June 9, 2011

Math
Solve the system of equations by graphing. Then classify the system.x+y=8x-y=-2
May 20, 2011

english
how do I correctly punctuate ? "Who wants dessert?," Latisha asked us as she walked into the room with a beautiful steaming apple pie. or is it correct?
May 10, 2011

Math
A man has 2 pennies, 3 nickels, 1 dime and 2 quarters. How many different sums of money can he make using one or more of these 8 coins?
May 5, 2011

Math
Circle C has radius 4 inches. Circle D had radius 9 inches. These two circles are connected. Point A,B,and E are points of tangency. Find AB. From point C to point D(which is the radius of circle C plus the raduis of circle D) it is 13 inches. From point C to point A (radius ...
April 29, 2011

Math
I dont understand someone help me!!
April 11, 2011

chemistry
Does a precipitate form if HCl and Ba(NO3)2 are mixed?
April 3, 2011

english
Every now and then, instead of using e-mail, mail a letter to your grandparents. We live in a fast-paced world. We feel comfortable using computers to send e-mails and Instant Message. Nana doesn’t live in that time zone. Forget all those fancy fonts and emoticons or ...
March 27, 2011

chemistry
A 375 g sample of well water is found to contain 17.0 mg of lead. How much lead (in parts per million) is in the well water? Round to the nearest tenth. Don't forget the unit.
March 4, 2011

bca
____ is the code of acceptable behaviors users should follow while on the Internet; that is, it is the conduct expected of individuals while online.
March 1, 2011

9th grade math
the triange is 31cm, side 1 and side 2 have equal lenghts, while side 3 is one centimeter shorter than twice then length of side 1, how long is each side?
February 18, 2011

Physics
I just need an equation to get me started, the book does not list one that is useful. The example they give uses the equation V1 = Ke(q1/r1) the problem is I dont know q.
February 18, 2011

Physics
A proton is located at the origin, and a second proton is located on the x-axis at x = 5.58 fm (1 fm = 10-15 m). (a) Calculate the electric potential energy associated with this configuration. 1 (b) An alpha particle (charge = 2e, mass = 6.64 10-27 kg) is now placed at (x, y...
February 18, 2011

Physics
never mind wrong question for the previous response. Thanks.
February 18, 2011

Physics
In the equations listed they are refering to a point charge which is different then that of 1.6*10^-19. If I were to use that in the equation it would not work. The point charge in the example is 5.00*10^-6 C
February 18, 2011

Physics
In the book the examples they give have a charge to them, but they dont offer any help with this question because the dont list a charge of the electron
February 18, 2011

Physics
An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.410 cm. (b) Calculate the electric potential VB at point B, x = 0.820 cm. What is the potential difference VB - VA?
February 18, 2011

Physics
Awesome! Thanks it worked out, I had the mass of an electron wrong. That was my problem there.
February 18, 2011

Physics
A uniform electric field of magnitude 410 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.00 cm. (a) What is the work done by the field on the electron?(b) What is the change in potential energy associated with...
February 18, 2011

Math- Please Help!!
739 kilometers per hour. I used an online electronic flight computer.
February 18, 2011

trig
At 2 points 95 ft apart on a horizontal line perpendicular to the front of a building, the angles of elevation of the top of the building are 25 degrees and 16 degrees. How tall is the building?
February 14, 2011

math
a rectangular parking lot has a length that is 10 yards greater than the width. the area of the parking lot is 200 square yards.find the length and the width
February 5, 2011

Mathematics
no;11 1/8 needs to be reduced
January 12, 2011

math
if you have a bill of 1.354 pesos ( philippines money) how can you it equal to a three family. example .Daniel 2 children Rolando 4 children Dante 5 children. how much will he pay per head of the family in order to equal a bill of each children to a bill of 1.354?
January 1, 2011

Math
I think we must add the whole family per head and divided the given bill.then times the number of every per head of the family in order to get a specific equal payment per head of the family. example: (1.439 peso bill philippine money) 1.439 given number.plus 2+3+5=10 per ...
December 28, 2010

Math
f you have a bill of 1.439 pesos how can you equal each person in 3 family in per head? example.family of Joseph-3 family of Daniel-2 family of charles-5?
December 28, 2010

math
how to convert litres to force in newton?
December 18, 2010

education
sorry. it didnt copy like the chart. i needed help on the last column which was determination of the evaluation.
December 3, 2010

education
Professional Growth Statement: __________________________________________________________________________________________ ____________________________________________________________________________________________________________________. Timeline: This plan should address ...
December 3, 2010

Physics: Simple Harmonic Motion
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...
December 1, 2010

Biology
This question refers to the replication cycle of viruses. Can anyone invent a drug that would reduce the severity of a viral infection, where one might block the cycle.
December 1, 2010

Physics
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...
November 30, 2010

Physics
A 10kg particle undergoes simple harmonic motion with an amplitude of 2.0mm, a maximum acceleration of 8.0x10^3 m/s^2, and an unknown phase constant (phi) What are: a.) the period of the motion b.) the maximum speed of the particle c.) total mechanical energy of the oscillator...
November 30, 2010

Logic
Supply steps in a proof of a valid argument and give reasons using rules of inference. 1.)~A*B 2.)C>A 3.)CvD/D
November 29, 2010

Algebra
but if you move things around it could equal something else... like 3 = 2x^3 + x how do you solve from there?
November 18, 2010

Algebra
how? can you show me please?
November 18, 2010

Algebra
0 = 2x^3 + x - 3 solve for x
November 18, 2010

AP Physics
A pole-vaulter approaches the takeoff point at a speed of 9.50 m/s. Assuming that only this speed determines the height to which he can rise, find the maximum height at which the vaulter can clear the bar.
November 13, 2010

geometry
de is equal to 17
November 6, 2010

TEACHING
HOW DO DUE PROCESS RIGHTS DIFFER FOR PROBATIONARY AND TENURED TEACHERS
November 4, 2010

Chemistry
it stands for Mu/meter
October 29, 2010

Chemistry
A heat lamp produces 22.5 watts of power at a wavelength of 6.0 {\rm \mu m}. How many photons are emitted per second? 1{watt}} = 1 J/s i got 7.02*10^20 but that is incorrect, can you help?
October 29, 2010

college Chemistry
Hydrobromic acid is a strong acid. If you have 1 L of a 7.5 M solution of Hydrbromic acid? A) What is the concentration of H_3O^+? B) What is the PH of this solution? C) If you dilute 1 liter of 7.5M in HBR solution to a volume of 2 L what is the new concentration?
October 21, 2010

11th grade
Use the following functions to solve. f(x) = x2 + x + 1; g(x) = 5 - 2x; h(x) = -x2 Solve f(g(-1))
October 20, 2010

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

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