September 25, 2016

Posts by Rachel

Total # Posts: 1,486

When light passes from air to glass, the light may change direction due to refraction. T or F?
December 9, 2007

December 9, 2007

True or false: The Reichstag refers to the legislative body or Congress in Germany. ??????????????????????????????????
December 9, 2007

a rectangle has two sets of parallel sides so it cant be that.
December 4, 2007

well, if its not a rhombus or a trapezoid then.... what has two right angles and one pair of parallel sides?
December 4, 2007

what am I? I am a polygon and I have two right angles and one pair of parallel sides. Is it a rhombus? Please help.
December 4, 2007

October 29, 2007

whats material were Portrait Masks made out of?
October 25, 2007

Soc. studies
what chemical was used to embalm the organs?
October 25, 2007

the name and birth place of a famous person born in 1893 and why?
October 24, 2007

Pre Alegbra
I love Pre Alegbra but i don't get it
October 24, 2007

Punctuation within sentences-hyphen
A bleeping sound came from his pocket it was his mobile phone signalling he would have to respond right away wouldnt he can you help me punctuate this sentence?
October 21, 2007

October 19, 2007

Social Studies.
i love chicken
October 17, 2007

we did a lab on chemical change, where we had to see how a chemical change affcts mass. so we measure the mass of 20ml of copper solution, and 2cm(cubed) of steel wool, and then we mixed them into a flask. soon the steel wool turned rusy, and broke apart. and the duofilm(which...
October 15, 2007

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24 degrees below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration ...
October 9, 2007

October 8, 2007

do all civilizations have laws?
September 25, 2007

i need as much information on laws that you can give me PLEASE
September 25, 2007

If two angles are congruent, must their supplements be congruent? Thank you, anyone, in advance. c[=
September 25, 2007

if a cyclist is traveling at 20km in a half in hour, is her average speed 1okm pher hour?
September 17, 2007

An investment under consideration has a payback of five years and a cost of $1,200. If the required return is 20 percent, what is the worst-case NPV?
September 15, 2007

Graph the supply and demand curves of Qd=500 - 2P and Qs = -100 + 3P
September 15, 2007

Graph the supply and demand curves of Qd=500 - 2P and Qs = -100 + 3P
September 15, 2007

Find the derivative of the quotients: y=4X/(X-3) --What would (x-3) be?
September 13, 2007

Econ/Math Derivatives
Find the derivative of the quotients: y=4X/(X-3)
September 13, 2007

The question is: Scientists do their experimental tests more than once, so they can reduce the effects of chance errors. This is called conducting____________? 14 letters. Anyone know the answer?
September 6, 2007

If the demand curve is P=12.4-4Qd and the supply curve is P=-2.6+2Qs, What is the equilibrium price? What is the equilibrium quantity?
September 6, 2007

P=12.4-4Qd How do you get P into this equation to make it Qd=12.4-4P?
September 5, 2007

Managerial Econ
How do you get P=12.4-4Qd to equal P=-2.6+2Qs? You have to find the equalibrium so you have to set Qd=Qs so I can't figure out how to get p in the equations and the equations to equal Qd & Qs.
September 5, 2007

Pre Algebra
7. 3132 8. 6400
August 18, 2007

how many hours do people typically work in week (in ireland)? Check this site for the length of the normal work week in Ireland. thanks,you have really helped me You're very welcome. I hope you enjoy your study of Ireland.
August 18, 2007

which careers are the most desired in ireland? Since 64% of Ireland's people work in service industries, these are the most desired jobs for the population. Ireland does a lot of computer and information technology.
August 18, 2007

what are the most common careers in ireland? Accordiing to the source linked below, Ireland's workforce is divided as follows. agriculture: 8% industry: 29% services: 64% (2002 est.) Industry ...
August 18, 2007

Is a free choice of careers in ireland or is a career chosen for each person by the goverment? Ireland has free choice of careers. Just as in most of the world, Irish people can hold any job for which they are qualified. thank you for the help You're very welcome.
August 18, 2007

an artificial surfactant.... Google it! Its the right anwser!
August 10, 2007

What kinds of situations can moral hazard exist? Are there ways that the government reduces the amount of moral hazard? Thanks so much! RB This site may help you.
June 22, 2007

I need to solve this with the substitution method. 3x + y = 6 3x + y = 3 Is it possible or is it a typo on the worksheet? I can't figure it out! Try the following very nice site: (Broken Link Removed)
June 4, 2007

how do i do long division? This web site may help you. dont listen to drbob222
May 31, 2007

"Find the pH of the solution obtained when 32 mL of 0.087 M ethylamine is titrated to the equivalence point with 0.15 M HCl? Do I need to do a rice table for this problem? I'm having difficulty starting this problem... Thanks!
May 21, 2007

how do you calculate metric surfaces? not sure what you mean. are you finding areas of surfaces that have metric units? are you converting between units of area in the metric system? give a specific example or problem.
May 18, 2007

What is the relationship between the word assignment and the following sentence? "The noble elephant marched near Goshen, Indiana," said Sam's aunt. Please rephrase and repost. Your question is not clear. Thanks. =)
May 14, 2007

Child Develpoment-- Question
Can you help with this question? As a caregiver of an infant, meaningful communication between you and the parent, gently introducing new parenting techniques, can sometimes be done lightly by which? A. "talking through the baby." B. waiting until the mother is ...
May 8, 2007

Hi, I would like to know if I did this problem correctly. Your help would be greatly appreciated! "Chlorine, Cl2, is produced commercially by the electrolysis of aqueous sodium chloride. The anode reaction is 2Cl-(aq)---> Cl2(g) + 2e- How long will it take to produce 2...
April 30, 2007

at the end of the novel Ralph cries. what is he crying about? I take you didn't read the book. Check this site... it explains it carefully. See top quote.
April 24, 2007

I am having trouble with the balancing the oxidation-reduction equations that are in a basic solution. This is the first one that I'm doing that's in a basic solution, and I can't get it! I get everything right except I get 2H2O instead of one on the left. MnO4- + ...
April 22, 2007

Hi, I posted yesterday with this lab question. "Calculate the molar amounts of NaOH used in the reaction with the HCl solution and with the HC2H3O2. I think I got the answer to that with the help that I received. I had 5 mL of HCl, and I was using .100 M NaOH, so I got ...
April 22, 2007

We did a lab for acid-base titrations, and I'm having trouble with my post lab questions because I had trouble with acid-base reactions and titrations in the first place! "Calculate the molar amounts of NaOH used in the reaction with the HCl solution and with the ...
April 21, 2007

Use these answers for questions 4 - 7. (A) 1s2 2s22p5 3s23p5 (B) 1s2 2s22p6 3s23p6 (C) 1s2 2s22p62d10 3s23p6 (D) 1s2 2s22p6 3s23p63d5 (E) 1s2 2s22p6 3s23p63d3 4s2 4. An impossible electronic configuration 5. The ground-state configuration for the atoms of a transition element ...
April 12, 2007

Use the following answers for questions 1 - 3. (A) F (B) S (C) Mg (D) Ar (E) Mn 3. Forms oxides that are common air pollutants and that yield acidic solution in water I think the answer to this one is B, but why is it B? I see how it would yield an acidic solution, but what ...
April 12, 2007

Obesrvation question
Teacher observation and subjective analysis of children are: 1.similar and done in the same way. 2.different and should be done separately. 3.Easiest to do while supervising. I vote for # 2.
April 10, 2007

I need major help with this problem! especially with the first equation that is used... A buffer is prepared by adding 115 mL of 0.20M NH3 to 145 mL of .15M NH4NO3. What is the pH of the final solution? Use the Henderson-Hasslebalch equation.
March 28, 2007

Costaguanan nominal =251% USA nominal =14.24%
March 21, 2007

f=p(c-1)-c(p-1) sOLVE FOR p f=pc-p-cp+c pc - cp = 0 So now we have f = -p+c Move "p" by itself. f-c = -p Now we multiply each side by -1 p = c-f Let's plug in values for f and c to check. We'll say: f=2 c=3 p=3-2 p=1 in this case. Now, let's plug in the ...
March 20, 2007

the three fuel sources to make electricity are what coal, natural gas, fuel oil ure mom ure dad and ur brother Coal, natural gas and fuel oil
March 12, 2007

What are 3 alternate sources of cleaner electricity? cleaner than what? i think you speak from alternative, renewable energy sources. examples are wind, photovoltaic, biomass or water. the advantage of these is that they do not emit greenhouse gases (ghg). to see how bad ...
March 12, 2007

Chemistry Science Project
I need some ideas for high school science projects. It doesnt really matter what field of science, but i would prefer chemistry, biology, or physics. Really Urgent! Thanks! What about a project on osmotic pressure. Put a salt solution inside a thistle tube, place a membrane ...
March 8, 2007

Simplify: 3/5 x 13.65 - 2/9 x 1.307 When I work this problem I get: 7.899555556 _ Would that be: 7.89 (or) _ 7.8995 The answer depends upon the order of operations, which must be clarified with parentheses and brackets. What you calculated is [(3/5) x 13.65)] - [(2/9) x 1.307...
February 24, 2007

Literature Question
I have this question on a homework assignment and I am confused! It is not wise to rely on the__________ to determine whether a stereotype exsists in a book. (Here are the choices the assignment gives me to complete the sentence) A. title B. illustrations C. book's format ...
February 4, 2007

U.S. History-PLEASE HELP!!!
im trying 2 find good history on ohio and this draft is due tomarrow!!! and its for a speech and i really need help!!!!!!!!!
February 1, 2007

January 31, 2007

help me unscramble this word
this word unscrambled is a country. the word is "ENGLAND">"ANLDEGN"
January 25, 2007

help me unscramble this word
ok can you help me unscramble this word "ANLDEGN".When it is unscrambled it its either the name of an ocean, country, state, city, or animal. Try these: =) Thank you for using the Jiskha Homework ...
January 25, 2007

What are the multiples of 27? any number that can be divided by 27 9 , 3, 27 and 1
January 24, 2007

I am interested in doing a science project on the math and science of different snowboarding tricks and techniques. Does anyone have advice and suggestions about how to do a project like this?? Please help! Very Urgent! Well you could do a nu,ber of different things. You could...
January 23, 2007

Math.. help.
A bungee jumper leaps from the top of a building that is 420 feet tall and falls at an average rate of 95 feet per second. at the time of the jump, the elevator is at a height of 130 feet and rising at a rate of 3.6 feet per second. about how many seconds will pass until the ...
January 7, 2007

Hello! I need help with knowing how to find certain data in the L3 and L4 columns using my calculator and plotting the graph to know which order the reaction is. I know you go to stats then to edit, and you put in the given info into L1 and L2. After that, you scroll up to L3 ...
January 7, 2007

I know how to find half-lives, but I have trouble finding the length of time it would take for the concrentration of X to decrease to Y% of its initial value. For example, this is one of the problems: Methyl isocyanide, CH3NC, isomerizes when heated to give acetonitrile (...
December 16, 2006

Not sure if anyone can help, since it's due todayy, but I need a term. What is the term for this? A biologist who desribes, names and classifies organisms? Help would be great. Taxonomist
December 15, 2006

Chemistry - Explain...
Hello! I'm hoping you can please help me with this! I left my book at school (I thought I'd left it in my backpack all day to bring home), and I'm in desperate need of your help because I have a test tomorrow. "Answer the following questions, which refer to ...
November 28, 2006

"Given Molality, calculate..."
"Given: An aqueous solution of C6H12O6 with a density of 1.18 g/ml" I) Calculate Molarity 1) It firsts asks me to, "State the moles of solute" 2) Calculate the mass of the solute in grams - I think I can do this if I know how to get #1 3) Later it also asks...
November 19, 2006

Algebra 1
2. The line y = 4x - 7 crosses the y axis at: a.(4, 0) b.(0, 4) c.(-7, 0) d.(0, -7) Set y=0 and solve for x You can automaticallly elimintae b. and d. because y has to be 0 when the line crosses the y-axis. Something seems to be wrong with your other choices too, recheck them...
October 23, 2006

what happens when a candle is alight.
October 20, 2006

dats a rockin slogan! dats wut im usin 4 my skool project!!!
October 16, 2006

pre algebra
what is 3y+2(-7+x) First, we need to distribute. 2 times -7 is -14, and 2 times x is 2x, leaving us with: 3y+(-14)+x 3y-14+x 9(4m+1) 9(4m+1) 9(4m+1) 12.x= x=1
October 16, 2006

The backpacks belonging to the girl
October 16, 2006

word unscramble
help me unscramble evraysweene
September 28, 2006

September 24, 2006

Hi I was wondering if anybody could explain what "winged words" are in terms of the Odyssey? Thanks. Thank you for using the Jiskha Homework Help Forum. Here is the definition from Definitions winged words plural noun 1. literary: Meaningful words spoken...
September 14, 2006

AP Govt.
What exactly is political culutre? =)
September 10, 2006

Stoichiometry problem
I'm stuck and am hoping you can help. Here is the problem: You react 7.92 grams of silver nitrate, AgNO3(aq), with an excess of sodium chloride, NaCl(aq). How many grams of silver chloride, AgCl(s), will precipitate from the solution? Any help would be appreciated. Most of...
September 9, 2006

mathh (unit rate)
is it 2.12??
August 22, 2006

Angle question
Quadrilateral JKLM is a rhombus. If mangleLMK = 36, find mangleKJM In the right triangle ABC, mangleB = 90, AB = 5, and AC= 12. Find BC. Round to the nearest tenth, if necessary. Help? Is AB a side and AC a side? I can't tell from your description which are sides and which...
August 21, 2006

ETH 125
Fellow AXIA student here as well. This is so funny that this post has been going for 3 years. I am going to reread chapter 2 to see if I had missed something. Thanks for everyone's input.
July 20, 2006

Please Help Me On This GCSE Higher Question
Can anyone answer this question which is in a form of a fraction? Simplify: 8x^2+20x-12/8x^2-2 Thanks What does this expression equal? What do you mean by the word "answer"? Did you mean to type 8x^2+20x-12/(8x^2-2)=0 ? the answer is: 2(x+3)/2x+1 ) In an election ...
June 23, 2006

GT English(honors)
For summer work i have to make a notes summary of each required book ive read..the problem is ive never heard or even seen a notes summary before and i am a visual learner can someone please send me an example of one or at least a format of how its done? There are several ways...
July 16, 2005

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