Sunday
September 21, 2014

Posts by Abi


Total # Posts: 72

MATH?!!?
a store sells ladders. . the retail price was a 40m percent markup over the manufacturer price. .a month later, the store reduced the retail price of the ladder by 25 percent What percent markup is the new retail price over the manufacturer price?
February 9, 2014

physics
7/8 part of a substance decays in 45 days what is its half life
February 5, 2014

Math
Lactose (MW:342 amu) makes up the vast majority of the carbohydrate. Calculate the molarity of lactose in buttermilk and compare it to that of protein.
October 12, 2013

Math
If each 11 football teams In a college athletic conference played each of the other teams just once in a season, how many games would there be? As part of your answer, make a table. How many games would there be for 12 teams?
August 21, 2013

Precal
:D thank you!!! I guess I've been staring at this for too long and probably not typing them correctly on the calculator! THANK YOU SO MUCH!!!!!!
June 22, 2013

Precal
I'm still not understanding... it's okay i'll keep trying to figure it out. im clearly not double checking it right since i checked for 1 and got a positive answer but its supposed to be negative till 2 :-/ thank you so much for your time! it is honestly ...
June 22, 2013

Precal
but if replace x with -4 i get a positive answer too!
June 22, 2013

Precal
if i replace -.001 with x i get 6001.001 how are you solving that without calculator
June 22, 2013

Precal
yes, it gives me 6001.001 as an answer You're not using a cal?
June 22, 2013

!?
Aww it's not funny, it's frustating! :( you want me to replace x with -3 not sure what you're meaning by that try -3/-.001 where did you get the .001?? I'm so sorry i'm not understanding and thank you so much for helping
June 22, 2013

ugh
See, this is where i have trouble understanding. if i put if in the calculator i see why it'd be -3 to 0 but in the exams the professor makes sure we are not able to graph inequality in calculator my graph was off on paper, i just verified on ti84+ and it looks different :-/
June 22, 2013

Precal
I ended up with SS: (-00,-3]union [2,00) why would it be -3 to 0?
June 22, 2013

Precal
Isn't it x^2+x-6 = 0 (x+3)(x-2) = 0? x = -3 or x= +2?
June 22, 2013

Precal
Sorry i should have put that in parenthesis (x^2+x-6)/x greater than or equal to 0
June 22, 2013

Precal
EDIT WHERE INEQUALITY IS GREATER THAN OR EQUAL TO ZERO
June 22, 2013

Precal
Please help. I'm having a lot of trouble with solving inequalities and graphing them solve the inequality and graph the solution on the real number line x^2+x-6/x I got SS: -infinity to -3 including -3 union -2 to infinity including -2 is that right?
June 22, 2013

Pre-cal
I did have to find those too but i was stuck on the Period! thank you so very much!
June 20, 2013

Pre-cal
I'm supposed to graph y= 4+2sin (pi/6 t -pi/5) i have the vertical shift d=4 amplitude 2 level line y=4 crest line y=6 trough line y=2 but i am not sure what the period is formula for period 2pi/b in this case 2pi/pi/6 => 12pi/pi do the pi's cancel, leaving the ...
June 20, 2013

Precal
An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200-meter running track. a) Draw a figure that visually represents the problem. Let x and y represent the length and width of the rectangular ...
June 13, 2013

Precal
An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200-meter running track. a) Draw a figure that visually represents the problem. Let x and y represent the length and width of the rectangular ...
June 13, 2013

chemistry
Determine the mass of CO2 gas that has a volume of 7.10 L at a pressure of 1.11 atm and a temperature of 31.0°C.
January 21, 2013

Physics Urgent!!!!!
OK, I know, I'm postin this way too many times but I'm halfway there now.... Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G...
May 2, 2011

Physics Urgent!!!!! I really need help with this
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 2, 2011

Physics Urgent!!!!! I really need help with this
I was substracting both radii, now I tryed (6.674E-11)(0.730283)(157.850)/(0.2286)^2 and I got 1.47E-7 and tryed 6.674E-11)(0.730283)(157.850)/(0.2286 +.1524 +.0254)^2 and I got 4.66E-8... but niether is right....
May 2, 2011

Physics Urgent!!!!! I really need help with this
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 2, 2011

Physics (please help!!!!)
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 2, 2011

Physics (please help!!!!)
I showed it.... r1= 0.0254m, m1=0.730283 kg, r2= 0.152m and m2=157.850 kg... I calculated (6.674E-11)(0.730283)(157.850)/(0.152m-0.0254m)^2 and I got 4.77E-7 and multiplyed it by 2 and then I got 9.54 E-7...
May 1, 2011

Physics (please help!!!!)
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 1, 2011

Physics (please help!!!!)
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 1, 2011

Physics Urgent!!!!!
Sorry to repost this, again, but I still don't understand. Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by ...
May 1, 2011

Physics Urgent!!!!!
But I just have to plug in one number for part A that most be E-7 and for part B I have to plug only one number too that must be E-8.
April 30, 2011

Physics Urgent!!!!!
Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in the late 18th ...
April 30, 2011

Physics Urgent!!
Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in the late 18th ...
April 30, 2011

Physics Urgent!!
Is that for A?
April 30, 2011

Physics Urgent!!
Ok, so I have r1= 0.0254m, m1=0.730283 kg, r2= 0.152m and m2=157.850 kg... I calculated (6.674E-11)(0.730283)(157.850)/(0.152m-0.0254m)^2 and I got 4.77E-7 and multiplyed it by 2 and then I got 9.54 E-7... Does this looks right?
April 30, 2011

Physics Urgent!!
Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in the late 18th ...
April 30, 2011

Physics Urgent!!!!!
Newton’s Law of Gravity specifies the magnitude of the interaction force between two point masses, m1 and m2, separated by the distance r as F(r) = Gm1m2/r^2. The gravitational constant G can be determined by directly measuring the interaction force in the late 18th ...
April 30, 2011

algebra
what is the area of length 5 and with 6
April 23, 2011

Chemistry (please check)
1)Which of the following compounds has the largest lattice energy: LiF LiCl NaF NaCl 2)Which of the following compounds has the most ionic character in its bonding: CaBr2 GeBr4 KBr GaBr3 3)Using the electronegativity table on page 364 of your text, which end of the B-N bond is...
April 15, 2011

Calculus
Water is leaking out of an inverted conical tank at a rate of 1100.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 15.0 meters and the diameter at the top is 5.0 meters. If the water level is rising ...
April 12, 2011

Calculus
Water is leaking out of an inverted conical tank at a rate of 1100.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 15.0 meters and the diameter at the top is 5.0 meters. If the water level is rising...
April 12, 2011

Calculus Please Help
Let f(x) = x^3 - x^2 + x - 1. Find an equation for tangent line to f at x = 2.
March 23, 2011

Calculus (pleas help!)
For what values of k is lim x -> INF coshkx/sin2x finite?
March 18, 2011

Calculus (pleas help!)
For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..
March 17, 2011

Calculus (pleas help!)
For what values of k is lim x -> INF coshkx/sin2x finite? (Enter your answer as an interval or list of intervals, for example, (-infinity,3], (5,7). Enter none if no values of k will work.) Please help..
March 17, 2011

Calculus (pleas help!)
Find the slope of the tangent line to the ellipse x^2/36 + y^2/49 =1 at the point (x,y). slope =_______ Are there any points where the slope is not defined? (Enter them as comma-separated ordered-pairs, e.g., (1,3), (-2,5). Enter none if there are no such points.) slope is ...
March 17, 2011

Physics (please help)
Hi Damon, Thanks for your help. Can you explain me how you got alpha (2/3) t^(3/2) ? Because I got alpha (4/3) t^(3/2) = beta (1/2) t^2 and then t= [(8/3)(alpha/beta)]^2 I then used my equation of beta and substituted t with my answer and I got x=(4096aplpha^4)/(162beta^3)
February 11, 2011

Physics (please help)
Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive constants with ...
February 11, 2011

Calculus
Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the limit of f(x) as...
February 9, 2011

Calculus
Consider the function f(x)=(4^x−1)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= I the the falues of f(x) for each interval... (b) Based on your table of values, what would you expect the limit of f(x) as...
February 9, 2011

Calculus
the values I got for f(x) were 4.9; 4.99; 4.999; 4.9999; 5.0001; 5.001; 5.01; 5.1 The two firsts and the two lasts values are not correct and I dont know why... the limit is 5 also what i have for the other part is -.00001<=x<= .00001 4.9999<=y<=5.0001 the values ...
February 9, 2011

Calculus
Consider the function f(x)=sin(5x)/x. (a) Fill in the following table of values for f(x): x= -0.1 -0.01 -0.001 -0.0001 0.0001 0.001 0.01 0.1 f(x)= ( I need the values of f(x) for each x) (b) Based on your table of values, what would you expect the limit of f(x) as x approaches...
February 9, 2011

Physics
Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive constants with ...
February 9, 2011

Calculus
The first value I tried was 3... and it didn't work either, I thought that the fact that it said "x is in degrees" affected. It also said at the end: (Give your answer accurate to at least 0.01...
February 9, 2011

Calculus
Use the graph to estimate the limit: lim x->0 sin(3x)/x When x is in degrees lim x->0 sin(3x)/x = ________ I thought the the answer was (3*180)/pi but it's not... please help... Thanks
February 9, 2011

Physics
Two cars are drag racing, starting from rest at t = 0, on a straight and level road. Team Alpha's car produces acceleration ax = alpha t^(-1/2) ; while Team Beta's car produces acceleration ax = Beta ; for all t > 0, where alpha and beta are positive constants with ...
February 9, 2011

Simple Harmonic Motion
I forgot to mention that the experiment is to teach us error analysis methods... I have to get the values of k for each interval Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 the values for k I got were k (N/m) 0 61.3 55.5 104 261 ...
February 8, 2011

Simple Harmonic Motion
have performed an experiment of simple harmonic motion and the values I got Mass(g) Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having weird values, if ...
February 8, 2011

Physics
I have performed an experiment of simple harmonic motion and the values I got Mass(g)Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having weird values, if ...
February 8, 2011

Physics
Can someone please tell me how to calculate the standard deviation of the following values? 0.985 0.985 1.005 1.455 1.035 And please for the following numbers too 1.47 1.52 1.50 1.45 1.39
February 8, 2011

social studies
do you have any quizes
December 31, 2010

Physics
A 5.4 kg bag of groceries is in equilibrium on an incline of angle θ= 150. Find the magnitude of the normal force on the bag
November 30, 2010

5th grade social studies
whats the question
November 7, 2010

calculus
Two cars, one traveling north and one traveling west, collide at an intersection.The resulting momentum of the two cars together after the collision is 32 000 kg . m/s N30degreesW. Find the momentum of each car before the collision.
May 2, 2010

Maths
(tanÈ+cotÈ)(sinÈ+cosÈ)=secÈ+cosecÈ
September 11, 2008

chemistry
why is it good to be a csi
September 9, 2008

science - refraction
why is refraction important when seomeone uses a camera?
April 25, 2008

Chemistry
actually when you calculate the equilibrium concentrations of each using the 0.010 L you find that the concentration of KSCN is the limiting reagent. so [FeSCN]^2 = mols KSCN/0.010L
April 13, 2008

maths
4x+3y=21 What is your question? You have simply stated the equation of a straight line. what is a prime factorazation?> expressing a number in terms of its Prime factors eg. 126 = 2*3*3*7 all the factors are prime numbers How does this relate to the first problem you posted?
March 23, 2007

Health Project Ideas
Try your brain on Crystal Meth
February 6, 2007

the big idea of energy
Sooooooo Energy can't be destroyed it just changes state So the heat energy used on the iron and sulphur is then changed into chemical bonds, heat energy, light energy etc. The energy is still there but being used as chemical bonds to keeep the compound as a compound. The ...
December 5, 2006

science
science is a natural phenomena
June 15, 2005

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