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September 21, 2014

Posts by Liz


Total # Posts: 1,155

algebra
sorry its not rationalizing
April 1, 2009

algebra
its called rationalizing the denominator
April 1, 2009

algebra
4 square root 22 over 4square root 2 multiply by 4 square root 12 over 3 square root 18
April 1, 2009

algebra
4√22/4√2*4√12/3√18
April 1, 2009

algebra 1
find the common ratio of each sequence: 1. 8,20,50,125......? 2. 0.48,0.9,1.8,3.6.....?
March 31, 2009

chemistry
thank you!
February 16, 2009

chemistry
Write Sulfuric acid and potassium hydroxide where the products are potassium sulfate and water.
February 16, 2009

12th grade
Write the chemical equation for Sulfiric Acid and potassisum sulfate the product is potassium sulfate and water.
February 16, 2009

English
When typing my essay for school the teacher wants the margins to be 1 1/2 half. How would I type that in the box to change my margins. Would it be 1.50
February 10, 2009

Math
My friend and I are both going to start working. I'm starting Sunday and will have every 9th day off. She's starting Monday (the day after me) and will have every 6th day off. When is the first day we'll both have off to go to the mall? I'll need the formula ...
January 31, 2009

calculus
I did do the sum and difference of the cubes and got these as my partial fractions: A / (x+1) Bx + C / (x^2-x+1) D / (x-1) Ex + F / (x^2+x+1) I got the answer for A = -1/6 and D = 1/6. But I was having trouble with the other variables...
January 22, 2009

calculus
I am working on this problem and having some trouble. We're supposed to use partial fractions. The problem is: integral of dx / (x^6-1) . I got the values of A and D, but I am having trouble with the others. Help please!
January 22, 2009

Pre-calculus
Thanks
January 20, 2009

Pre-calculus
Find the first three iterates of the function f(x)=x^2-2, if the intial value is -2. z(0)=-2 z(1)=(-2)^2-2 or 4-2=2 z(2)=(2)^2-2 or 4-2=2 z(3)=(2)^2-2 or 4-2=2 Answer: z(1)=2, z(2)=2, z(3)=2
January 20, 2009

Pre-calculus
Ok thanks i know where i went wrong
January 20, 2009

math
suppose that a width of a rectangle is 5 inches shorter than the length and the the perimeter of the rectangle is 50 set up an equation for the perimeter invlving only l, the length of the rectangle find the length and width
January 9, 2009

Biology
The part of translation that most closely resembles the assistant's job is Ribosomes. The bricks represent amino acids.
December 8, 2008

College Algebra
Slove 5x+4y=12 for y When graph, this equation would be line. By examing your answer to part a what is the slope and y intercept of this line
December 3, 2008

College Algebra
A tennis club offer two payment options option 1. aaaaaaaaaa442 monthly fee plus $5/hour for court rental option 2. No mothly fee but $8.50/hour for court rental. Let x = hours per month for court time. Write a mathematical model represnt toltal monthly cost, C in terms of x ...
December 3, 2008

chemistry
(1) - A gas is released. - An insoluble substance is produced. - A permanent color change is observed. - A heat energy change is noted. * (exothermic reaction: releases heat) * (endothermic reaction: absorbs heat) * (Light is emmitted) not sure about the other two, sorry
December 2, 2008

Algebra II
find each product and simplify if possible: 9z+5 X 5z ---- ----- 15 81z(exponent 2) -25
November 25, 2008

calculus
A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and $15 per foot on land. Express the total cost as a function of x, where x ...
November 9, 2008

11th Grade-math
A power station and a factory are on opposite sides of a river 50 feet wide. A power line must be run from the station to the factory. It costs 25 dollars per foot to run the cable in the river and $15 per foot on land. Express the total cost as a function of x, where x ...
November 9, 2008

math
4 to 34 I think
November 4, 2008

science
what benefit do liquids have over soilds when trying to react the chemicals?
October 30, 2008

6th grade Math
692 two is under 5 so you dont round up its .69 and 657 seven is over 5 so u round up so .66 understand
October 29, 2008

SCIENCE
what poisonous gas is a result of formaldehyde
October 29, 2008

SCIENCE
HOW DO YOU BALANCE NH4CL + Na2SO4
October 29, 2008

SCIENCE
C SQUARE ROOT OF A/TO THE B POWER
October 28, 2008

8th grade
is the square root of -22 rational?
October 20, 2008

Experimental Design
I'm doing research on reasons for the canceling of soap operas. I cant seem to find any information as to WHY they cancelled south of nowhere. Many sites say that it is just ending, but I need help finding what caused it to end. can someone help me on this topic?? thanks! liz
October 19, 2008

7th grade
what is the formula or equation for converting units?
October 6, 2008

Accounting - Adjusting Entries
$750 of insurance expense needs to be accrued. It was originally recorded as prepaid insurance. Do I just debit prepaid insurance and credit insurnace expense for $750?? My other problem is adjustment was made to record interest expense on bonds payable for $500. The payment ...
October 5, 2008

math riddle ALGEBRA WITH PIZZAZZ
Why does lightning shock people
September 14, 2008

Chemistry
I am supposed to find the percent abundancies of two isotopes. I am given the masses of both isotopes, along with the atomic mass. (This is a fictional element with only those two isotopes.) I am not given percentages for either isotope... how do I solve this?
September 8, 2008

Math (alg 2)
The difference of the area of two squares is 223 square feet and the difference of their perimeters is 24 feet. Find a side of each square.
September 7, 2008

Math (alg 2)
The ratio of two numbers is 3 to 2 and the difference of their squares is 20. Find the numbers.
September 7, 2008

Math (alg 2)
The ratio of two numbers is 3 to 2 and the difference of their squares is 20. Find the numbers.
September 7, 2008

Math
If the width of a rectangle is increased by 2 inches, the area is 140 square inches. If the legnth is increased by 1 inch, the area is 120 inches. Find the dimensions of the rectangle.
September 7, 2008

Algebra 2
The difference of the area of two squares is 223 square feet and the difference of their perimeters is 24 feet. Find a side of each square.
September 7, 2008

12th grade
Thanks William
September 3, 2008

12th grade
Given that x is an inetger, state the relation representing each equation by making a table of values. y=3x+5 and -4<x<4
September 3, 2008

ap chem
? I'm not sure what you mean by that... It's a noble gas if that's what you're asking.
September 1, 2008

ap chem
All the electrons of this element are spin-paired. Carbon Nitrogen Oxygen Flourine Neon
September 1, 2008

science
How do organs and tissues work together to help write your name?
August 27, 2008

Math with science
thank you so much!!
July 27, 2008

Math with science
Radioactive iodine treatment is so successful at treating hyperthyroidism that it has virtually replaced thyroid surgery. To the nearest full day, determine how long it will take for 400 millicuries of I-131, which has a half-life of 8 days, to decay to 3.125 millicuries. 56 ...
July 27, 2008

Algebra
Thanks you were a great help
June 27, 2008

Algebra
An office building containing 96,000 square feet of space is to be made into apartments. There will be at most 15 one-bedroom units, each with 800 square feet of space. The remaining units, each with 1200 square feet of space, will have two bedrooms. Rent for each one-bedroom ...
June 27, 2008

Reseach paper
I too am just one of many people on here doing the same paper and so far I havnt been able to find much to help answer the questions and get this paper written. NO I dont want anyone to do my work for me but my goodness a little help would be nice. Good Luck to everyone trying...
June 21, 2008

writing skills
which one of the following sentences contains an unnecessary word? A.Why dont you leave before the crowd arrives B.The snake raised up its head and struck C.She left early, thoguh he told her not to. D.Rich was angry, but he concealed his feelings
June 20, 2008

statics
If a court acquits every defendant, they will never commit a Type I error. A) True B) False 2. The probability of rejecting a true null hypothesis increases as the sample size increases. A) True B) False 3. For a given level of significance, the critical value of Student's...
June 7, 2008

chemistry
so its 2 electrons?
April 15, 2008

chemistry
How many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water?
April 15, 2008

Literature poetry, part 1
If this be error and upon me proved, I never writ, nor no man ever loved. These lines are an example of a/an a. quatrain b. octet c. couplet d. sestet
April 15, 2008

theology
How does the Book of Daniel present a spiritual message? What is the main purpose of this message?
April 5, 2008

math
From the foot of a building I have to look upwards at an angle of 22 degrees to sight the top of a tree. From the top of the building, 150m above ground level, I have to look down at an angle of 50 degrees below the horizontal to sigh the tree top. a.) How hight is the tree? b...
March 25, 2008

math
Two observation posts are 12km apart at A and B. From A, a third observation post C is located such that angle CAB is 42 degrees while CBA is 67 degrees. Find the distance of C from both A and B.
March 25, 2008

math
prove the following trigonometric identity: (cos x/(1+sinx))+tanx = secx
March 12, 2008

world literature
How do poets utilize literary devices and conventions to develop themes in their poetry? I don't understand how to read a poem so I understand what it is really saying either?
March 11, 2008

chemistry
Definitely C
February 10, 2008

simple math
i just wanted to know how many significant figures in the number 100
February 10, 2008

trig
Determine the height of a tree which casts a shadow of 13.7m when the sun is at an angle of 28 degrees.
February 3, 2008

math
find the constant term of the expansion of (3x²+(1/x))^8 I don't know where to start =\
February 3, 2008

math
Find the coefficient of x³ in the expansion of (2x+5)^6
February 3, 2008

Math
Use Pascal's triangle to expand (a+b)^6 and hence find the binomial expansion of: (x-3)^6
February 3, 2008

Spelling/Analogy
i think this site sukes i give it no stares in less you are as dum as dirt
January 30, 2008

math
what is probability
January 28, 2008

astronomy
yes this is explained much better thank you for your time
December 14, 2007

astronomy
my book tells me the answer is 49 AU. I am just not getting the calculation. Please help
December 14, 2007

astronomy
if a comet is 125 years from sun and has a perihelion distance of 1. AU..What is the aphelion distance? I formulated it this way, is this right? 125years^2/1.AU^3= 15,625
December 14, 2007

science
balance FeS2 + O2 < Fe2O3 + So2
December 13, 2007

science
how do you balance the equation below? Mg + O2 > MgO
December 13, 2007

astronomy help please
A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the ...
December 13, 2007

thank you
thank you
December 13, 2007

Astronomy help
If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation
December 13, 2007

Astronomy
Are you saying that as the radius of the planet doubled the surface gravity would double too and it is because of the answer you gave before
December 13, 2007

can you explain what you are saying
cannot understand your point
December 13, 2007

Astronomy
A planet is growing by accretion of material from the solar nebula. Suppose that as it grows, its density remains constant. Does the force of gravity at its surface increase, decrease, or stay the same? Why? Also, What would happen to the surface gravity as the radius of the ...
December 13, 2007

Astronomy
If a comet has a perihelion distance of 1.AU and an orbital period of 125 Earth years.. What is the comet's aphelion? Cannot seem to find the correct calculation
December 13, 2007

Astronomy
Describe in one sentence the rotations and revolutions of the planets.
November 23, 2007

Astronomy
How could you tell if a moon or planet did not form with the rest of the solar system bodies? How might it have gotten there then?
November 23, 2007

Astronomy
Do the rotations of the solar syatem bodies seem to indicate that most of them formed together at the same time in the same way, or seperately under different conditions?
November 23, 2007

thanks
thanks
November 23, 2007

Astronomy
In one sentence I need to describe the shapes of the orbits of the planets. The shape must be accounted for in a model of the solar system, and of the solar system formation. My answer would be that the shapes of the orbits are round. Yet this seems to obvious! Need help.. is ...
November 23, 2007

Math
i feel your hatred. veronica... i feel ya
November 20, 2007

Astronomy
How did the voyager mission change our preconception of Jupiter and its moons
November 9, 2007

physical science
are alkali metals or alkaline earth metals soft silver - white, shiny metals
November 7, 2007

physical science
flourine is a halogen is it also a non-metal
November 7, 2007

science
Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases
November 7, 2007

physical science
do not noramlly react with other elements? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases
November 6, 2007

Physical science
Never found in nature uncombined? Alkali metals Alkaline Earth Metals Boron Family Carbon Family Nitrogen Family Oxygen Family Halogen Family Noble Gases
November 6, 2007

physical science
what is transition metal number 24 a common solid halogen family 13 bears this name
November 6, 2007

pre-algebra
what is the answer for this equation? -4x+9x
November 6, 2007

physical science
The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on the page is review and reinforcement structure of an atom - the three main subtomic particles are the proton, the nuetron and the electron.
November 4, 2007

physical science
The exact question how are the following terms related - subatomic particels and atomic mass unit. The heading on hte apge is review adn reinforcement structure of an atom - the three main subtomic particles are teh proton, hte nuetron and hte electron.
November 4, 2007

physical science
what is a one sentence that describes how subtatomic particles and atomic mass unit are realted?
November 4, 2007

13 colums science
K S S S S S S J S S F S S S S S S S S S D S S R S S S S S S
November 4, 2007

science
The following is a periodic table below All the letters are in squares The S = an empty square 13 Colums in total Questions: 1. What pair of elements is in the same period? D and R 2. Which pair of elemetns is in hte same family? K and F 3. Which element has the smallest ...
November 4, 2007

science Dr. Bob /Pursley
this is the chart we were given S = empty square 13 columns Question which elemnts are classified as metals. K S S S S S J S S F S S S S S S S S S D S S R S S S S S S
November 4, 2007

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