Thursday
October 27, 2016

# Posts by erica

Total # Posts: 602

math
CAN YOU SHOW ME THE QUICKEST WAY TO DO ALGEBRA
November 24, 2009

Estimate 5,602_2,344
September 29, 2009

psychology
What task component distinguishes the Wechsler Scales from the SBIS?
September 7, 2009

followhich of the wing accurately shows the correct terms for the two sides of a chemical equation, correctly placed to the lelf or to the right where they belong ,and also shows the correct symbol that is written between them
August 23, 2009

English - A lesson before dying
what are two plot related titles and their pose or tone related title?
August 10, 2009

college
how to work symbolic representatios? i need to find the domain and range
April 24, 2009

Chemistry
there is a picture on google images... if you type in "crystal structure of lithium sulfide"......
April 15, 2009

Chemistry
The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this structure, determine: a)the coordination number of Li and S b) the number of formula nunits in the unit cell c) the density of Li2S
April 15, 2009

Chemistry
The crystal structure of lithium sulfide (Li2S) is pictured here. The length of the unit cell is 5.88 x 10^2. For this structure, determine: (I could not paste the actual picture from the assignment here, but if you go to Google Image and type in "crystal structure of ...
April 14, 2009

Physics: Electricity and Magnetism
Four charges on a rectangle that is 6 cm by 3 cm. All but one of the corners has a positive charge. The magnitudes of the charges are all 8.40e-12 C. What is the net electric field at the center of the rectangle?
April 10, 2009

algebra 1b
i need to know how to solve certain problems like this 4x=2y-10 x+2y=5 i need examples of this and shown to me step by step
March 21, 2009

Psychology
I haven't watch that movie before, do you mind telling me exactly which part relates to memory and learning? I tried to find it in youtube, but not sure which part. thanks!
March 12, 2009

Psychology
This is a homework assignment for my Psychology course on Memory and learning. Find a Movie/video clip (1-3 mins)that demonstrate a concept / phenomenom relevant to learning and memory? My prof used Matrix (what we see is just our neuron firing) and Bourne Idenity(amnesia)for ...
March 12, 2009

Englsih
This is one of my english homework. Can someone have a look at it and give me some suqqestions. Thank you. The Summary of English Grammar defines the major word-classes in terms of meaning rather than structure. By references to any one of the major wordclasses state the ...
March 9, 2009

English
My other friend with the same assignment put dual for all of them.
March 9, 2009

English
YesYes. The question original is: Indicate the case, person, number and gender of the bracketed words. I only have trouble with indicating the gender. Thanks!
March 9, 2009

English
Indicate the gendr of the bracketed words. I tired them but I am not sure am I right or not. Please look over it and give me suggestion if they are wrong. Thank you!! (They) told the (children) the (stories) they had heard (themselves). They - collective children - collective...
March 9, 2009

English
I have did the corrections for my english homework I posted a few days ago. Can someone check it over again and give me some suggestion if they are still wrong. Thank you!! Identify the phrase in the sentence below, and name the kind and function of each phrase. a)Having had a...
February 7, 2009

English
This is my english assignment, hope someone will look over it for me!! Thanks Identify the phrase in the sentence below, and name the kind and function of each phrase. a)Having had a good season, they hoped to win the trophy. having had a good season: participial to win the ...
February 4, 2009

BUS 210
This isn't that hard, just read the f*ing chapter
December 3, 2008

Math
did u say divide 6 3times
December 2, 2008

The Pilgrims were seeking freedom
November 18, 2008

chem
how do i calculate the concentration of F ions using pH in ppm
November 16, 2008

Statistics
Assume that men constitute 49% of population in a country. Assume also that among men there are 5% of color-blinded. Find the proba- bility that a person chosen at random is a color-blinded man.
November 14, 2008

Chem
find pH of 0.050 M HCLO4 plus 0.050 M HBr> You must consider activities>
November 12, 2008

math
the edges of a cube are 3 inches long. what is the surface area, in square inches, of this cube?
November 9, 2008

health
the main reason you should rduce your intake of eggs is because egg yolks
October 28, 2008

math
Is the following set of numbers a perfect triple? 13, 15, 18 Why are they, or why not
October 27, 2008

chemistry
What does the statement the properties of salt are different from the properties of elements that go into making them mean
October 13, 2008

Math word problem
I am having problems with this part: add the equations... 33+63)km/time=64km/hr then time= 96/64 hr (I know this is 1.5) Now solve for speed of wind in the first equation.. (is it 33km/1.5 =22) 33km/time=32km/hr-speedwind.
October 12, 2008

Math word problem
Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What is the speed of the wind? I don't understand any of the responses. You have to assume in this case the wind retards and assists with the same ...
October 12, 2008

Help
Erik bicycles 32 km/h with no wind. Against the wind he bikes 33 km in the same time it takes to bike 63 km with the wind. What is the speed of the wind?
October 12, 2008

MATH
WHAT ARE THE BEST WAYS TO STUDY FOR MATH TEST...
September 19, 2008

physics
at 10:15 am, Snail 1 crossed the 65-cm mark with a velocity of 4cm/min. in a great burst of energy, snail 1 raced to the 90-cm mark in 3 minutes. his velocity as he crossed the 90-cm mark was 7 cm/min. what was the acceleration of snail 1?
September 18, 2008

your pet dog runs around in circles, chasing his tail. Does this mean acceleration?
September 18, 2008

biology
if boron has 5 protons in its nucleus how many neutrons are there?and how many electrons? what if b-7 was an isotope how many nentrons are present in this atom? thanks for your help
August 4, 2008

Pre calc
How do you write a quadratic equation in standard form for a given set of zeros?
August 2, 2008

science
what is a flatcurved surface called
July 9, 2008

history
Nixon's policy of "engagement" with the Communists was called detente. Rather than military confrontation, Nixon championed diplomatic conversations. Nixon ended the Vietnam war, went to Red China, and started the nuclear arms reduction treaties. Nixon's ...
July 2, 2008

algebra
i figured it out :)
June 12, 2008

algebra
If y varies jointly with x and z, and y=24 when x=3 and z=2, then the value of x when y=6 and z=0.5 is 12 6 1 3 1/3
June 12, 2008

ecology
what part of the plant absorbs the most water?? Is it the stem?
May 27, 2008

CRITICAL THINKING
not sure
April 3, 2008

math
Thank you.
March 6, 2008

math
How would I find the a for the equation y= a(x-h)^2+k. I'm looking at a graph, and I can solve for everything except for a. What is it supposed to be?
March 6, 2008

U.S. History
What were the key arguments for and against U.S. imperialism during the Spanish American War??
March 2, 2008

molarity
what mass of sodium hydroxide, NaOH, must be dissolved to make 460 ml of a 1.10 M solution
February 27, 2008

english
the subjuect of a sentence may be what parts of speech?
February 12, 2008

math Thanks to everyone for the help it's needed!
what would be the radius of a circle with a diameter of 8 inches?
February 12, 2008

math
what is the average of 132,145,140,128? do u add them all togher then divide ? or just add them and get the answer?
February 12, 2008

math
robert bought a used car for \$1,500.00 if the sales tax is 5% what is the total that he paid?
February 12, 2008

math
2/3+4/6+?
February 12, 2008

math its been years since school
a cube measures 3 inches on all its sides. Wgat is its volume in inches?
February 12, 2008

math
what is the perimeter of a triangle which sides mesure 6,8,and 10 inches?
February 12, 2008

geometry
what is the area of a rectangle with a width of 12 feet and a length of 10?
February 12, 2008

math
1 pie with diameter of a to b then radius of top to bottom half of c to o the chord is angle cob right. the questions are a. which chord is not a diameter b. name a central angle that is a right angle c. name a inscribed angle
December 3, 2007

math
8/9 x 1 1/5 x 10
December 3, 2007

science
Why does covering and refrigerating food help reduce spoilage from mould?
November 3, 2007

physics
If the filliament resistance in an automobile headlamp is 3 ohms, how many amps does it draw when connected to a 12 volt battery? I got 36 watts? would I divide 12 volts/3 ohms= 4 amps
October 25, 2007

physics.
please check my answers. when a lamp is plugged into a 120 V socket, each coulomb of charge that flows in the circuit is raised to a potential engergy of 120 joules? which offers more resistance to water flow, a wide pipe or narrow pipe? I got wide as my answer. Similarly ...
October 25, 2007

math
I am havnig a problem understanding the rules of long division with decimals can you explain
September 10, 2007

Math
Factor pairs
August 29, 2007

Math(Factoring)
x^2+4 x^2+4 = (x + 2 i) (x - 2 i) Wouldn't you need a value for x? Or do u just have to make an expression? An expression for this example would be xx+4 O never mind my answer was incorrect. Sorry about that.
June 29, 2007

Factor:
x^2+4
June 29, 2007

Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them! Problems: 2.Your quiz grades are 19, 17, 20, and 15. What is the lowest grade you can receive on the next quiz and maintain at least an 18 average? 3.Stacey and Luis volunteer at the local hospital. ...
June 22, 2007

Math
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them! Problems: 2.Your quiz grades are 19, 17, 20, and 15. What is the lowest grade you can receive on the next quiz and maintain at least an 18 average? 3.Stacey and Luis volunteer at the local hospital. ...
June 21, 2007

Math
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them! Problems: 2.Your quiz grades are 19, 17, 20, and 15. What is the lowest grade you can receive on the next quiz and maintain at least an 18 average? 3.Stacey and Luis volunteer at the local hospital. ...
June 21, 2007

Math
Directions:Write inequalities for the numbers 2 - 4 below. Do not solve them! Problems: 2.Your quiz grades are 19, 17, 20, and 15. What is the lowest grade you can receive on the next quiz and maintain at least an 18 average? 3.Stacey and Luis volunteer at the local hospital. ...
June 20, 2007

Math Help
Directions are that i have to solve the equation and graph it using words.I have to include whether itis a solid or dotted line and which way the shading is. Problem: -2x+3y<-6 dotted line. There is no equals in the problem. Which way for shading... solve for y y<2/3 x -...
June 13, 2007

Algebra
Directions say that I have to solve and graph the equation using words.I have to include whether the lines are dotted or solid, how to graph each of them and where the solution is shaded. 2x-3y>_9 and -x-4y>_8 both should be solid, because the solution is greater than OR...
June 12, 2007

Science
How do clouds form, and where in canada would you expect to see certain types of clouds. What is the difference between clouds and fog? http://en.wikipedia.org/wiki/Cloud
May 20, 2007

Science
1. How do meteorologists forecast El Nino and La Nina? 2. Effects of El Nino and La Nina with regards to ocean currents and air currents. Meteorologists have not been very successful at forecasting them so far; it is mainly a question of monitoring it to see of they is there. ...
May 16, 2007

Science
Why is it impossible to have an Arctic Circumpolar Current? http://www.whoi.edu/science/PO/arcticgroup/projects/proshjohnson-two-regimes.pdf
May 12, 2007

Language Arts
How do I do a Bibliography for an interview? Thank you for using the Jiskha Homework Help Forum. Here are some sites on how to write a Bibliography and the second one is good for an interview: 1. http://dicksonc.act.edu.au/Library/bibliog.html 2. (Broken Link Removed) Here'...
May 10, 2007

Science
Can someone tell name 6 effects of ocean currents? Thanks Since this is not my area of expertise, I searched Google under the key words "'ocean currents' effects" to get these possible sources: http://www.thecanadianencyclopedia.com/index.cfm?PgNm=TCE&Params=...
May 9, 2007

12 chemistry
What is the average ion concentration in a 7.9 mL saturated solution of calcium hydroxide containing calcium chloride (CaCl2)?
April 24, 2007

Community College
waht is the impact of a stock repurchase on a companys debt ratio? Does this suggest another use for excess cash? The correct subject in the subject line will get you help in a more timely manner, and will aid in not wasting the time of other teachers. When a company ...
April 22, 2007

math
a small farm field is a square measuring 340 ft on a side. what is the perimeter of the field?
March 19, 2007

What are the sectores of the economy? Since this is not my area of expertise, I searched Google under the key words "economy sectors" to get these possible sources: http://www.tutor2u.net/economics/content/topics/development/development_economy_sectors.htm http://...
January 15, 2007

unit rates
\$60 for 8 h
December 19, 2006

Physics
Spent steam from an electric generating plant leaves the turbines at 120.0 degrees Celsius and is cooled to 90.0 degrees Celsuius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling tower water for each kilogram of spent ...
November 21, 2006

Physics
A 50.0 g silver spoon at 20.0 degrees Celsius is placed in a cup of coffee at 90.0 degrees C. How much heat does the spoon absorb from the coffee to reach a temp. of 89.0 degrees C? Rememeber this equation. It, or a slight modification of it, will work all of these heat ...
November 21, 2006

physics
lead is a soft, dense metal with a specific heat of 0.028 kcal/kg degrees C, a melting point of 328.0 degrees C and a heat of fusion of 5.5 kcal/kg. How much heat must be provided to melt a 250.0 kg sample of lead with a temperature of 20.0 degrees Celsius? q1 = heat to move ...
November 21, 2006

Physics
Which provides more cooling for a styrofoam cooler, one with 10 lbs of ice at 0 degrees C or one with 10 lbs of ice water at 0 degrees C. Explain. qice=mass*heat of fusion. qH2O=mass*specific heat x delta T However, you aren't given a two temperatures; therefore, you can&#...
November 21, 2006

Physics
a 1.0 metal head of a geology hammer strikes a solid rock with a velocity of 5.0 m/s. Assuming all the energy is retained by the hammer head, how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp.
November 21, 2006

ethical issues
What international moral code, if any, is being violated by the Bank? What bank? What did "the Bank" do that might have violated international moral code? Please explain and we'll be glad to help you find the answer.
November 2, 2006

pre-calc
solve each system of equations using matrices x+2y-3z=0 2x-4y=z=-7 -2x+2y-3z=4 I don't see how it is possible to even attempt a matrix on this text oriented site.
October 24, 2006

pre-calc
find real numbers a,b,c so that the graph of the function y=ax^2+bx+c contains the points (-11,4), (2,3) , and (0,1) Write three equations, with each point in one. Then solve the three equations.
October 24, 2006

pre-calculus
Solve eacy system of inequalities. If the system has no solution, say that it is inconsistant. x -y -z = 1 2x +3y +z = 2 3x +2y = 0 add the top two equations. 2x+2y =3 That is inconsistent with the last equation.
October 24, 2006

Pre-Calculus
The logistic growth model p(t)=0.90/1+3.5e^-0.339t relates the proportion of new personal computers sold @ Best Buy that have Intel's latest coprecessor t months after it has been introduced. a) what proportion of new personal computers sold @ Best Buy will have Intel'...
October 19, 2006

Pre-Calculus
A culture of bacteria obeys the law of unlimited growth. If 500 bacteria are present initially and there are 800 after 1 hour, how many will be present in the cultrue after 5 hours? How long until there are 20,000 bacteria? Hmmm, what is "the law of unlimited growth"...
October 19, 2006

Pre-Calculus
The formula D= 5e ^-0.4h can be used to find the number of milligrams D of a certain drug that is in a patient's bloodstream h hours after the drug has been administered. When the number of milligrams reaches 2, the drug is to be administered again. WHat is the time ...
October 10, 2006

Pre Calculs
The pH of a chemical solution is given by the formula pH = -log10 [H+] where [H+] is the concentration of hydrogen ions in moles per liter. Values of pH range from 0 (acidic) to 14 (alkaline). (a) what is the pH of the solution for which [H+] is 0.1? (b) What happens to pH as ...
October 10, 2006

Pre-Calculus
The period T (in seconds) of a simple pendulum is a function of its length l (in feet), given by T(l) = 2pi sq root of l/g, where g = 32.2 feet per second per seconds is the acceleration of gravity. Express the length l as a function of the period T. If T=2pi*sqrt(l/g) then do...
October 5, 2006

Pre-Calculus
The function f(x)= x^4 is not one-to-one. Find a suitable restriction on the domain of f so that the new function that results is one-to-one. Then find the inverse of f. Restrict it to be non-negative to meet the 1-1 requirement.
October 5, 2006

pre-calculus
the spread of oil leaking from a tanker is in the shape of a circle. If the radius r (in feet) of the spread after t hours is r(t)= 200 square root of t, find the area A of the oil slick as a function of the time t. You know that the area of a circle is A=pi*r^2. You're ...
October 3, 2006

Pre-Calculus
The surface ares S (in square meters) of a hot air ballon is given by s(r)=4 pi r^2 where r is radius of balloon (in meters). If the radius r is increasing with time (in seconds) according to the formula r(t) = 2/3t^3, t is greater than or equal to 0, find the surface area S ...
October 3, 2006

Pre-Calculus
The monthly revenue acheived by selling x boxes of candy is calculated to be x(5-0.05x)dollars. The wholesale cost of each box of candy is \$1.50. How many boxes must be sold each month to achieve a profit of at least \$60. Can someone please let me know how to set up this ...
September 19, 2006

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