Tuesday

February 21, 2017
Total # Posts: 808

**Math Geometry**

A triangle has vertices P(a,b), Q(c,d), and R(e,f). You are asked to prove that the image triangle angle P'Q'R' of triangle angle PQR after reflection across the y-axis is congruent to the preimage. What coordinates should you use for the vertices of triangle ...

*January 28, 2009*

**Geometry**

Angle JKL is congruent to angle MNP, KL= 21x - 2, NP = 20x, LJ = 15x, PM = 13x + 4. Find LJ. I don't understand how to do it! Please, help! :)

*January 28, 2009*

**9th grade**

Kelvin

*January 28, 2009*

**4th grade english**

inside=______________+____________ The words to pick from are head, top, and from. You have to form compound word.

*December 17, 2008*

**4th grade english**

inside=________+__________ head top from (compound words)

*December 17, 2008*

**Math**

How many centimeters is 4 inches?

*December 16, 2008*

**english**

What are the basic steps of conducting a college level research???

*December 14, 2008*

**locus**

Write an equation of the locus of points a. equidistant from the x-axis and the y-axis and whose coordinates have the same sign b.equidistant from the x-axis and the y-axis and whose coordinates have the same sign Can anyone please give me some ideas to do it? THANKS A LOT!

*December 14, 2008*

**Chemistry**

What Holds the metals together in a solid?

*December 13, 2008*

**Chemistry**

What is the formula for: calcium iodate and iron (III)perchlorate

*December 12, 2008*

**chemistry**

I need help to complete and balance the following acid/base neutralization reaction. H2SO4(aq)+Na2SO3(aq) Thanks!

*December 10, 2008*

**chemistry**

why do positive ions and negative ions form?

*December 10, 2008*

**Math**

Cheryl gave Brenda 7 coins worth .92 cents. Two coins were quarters. What were the other 5 coins?

*November 24, 2008*

**4th grade English**

What would be the common noun or nouns in the following sentence: Mrs. Rawlings swims almost every day.

*November 23, 2008*

**4th grade English**

Should the word veterinarian be capital when used like this If you have a pet that gets sick, take it to a veterinarian.

*November 20, 2008*

**10th grade science**

Which of the following would most likely be the prototype for a flower? an aster a magnolia a hibiscus a gladiola a rose I have no idea i know that a prototype serves as typical example but to me all the answers work

*November 19, 2008*

**problem solving**

execute the indicated multiplications. (x-2)(x^2+2x+4)

*November 15, 2008*

**accounting**

For each of the following items give an example of a business transaction that has the described effect on the accounting equation: increase an asset and increase a liability increase one asset and decrease another asset decrease an asset and decrease owners equity decrease an...

*November 9, 2008*

**math**

UGH JUST TELL ME THE ANSWER WEBSITE

*November 6, 2008*

**Math**

If you have a grid (100 blocks) with two full shaded and one with 63 blocks shaded, what would the decimal and fraction be?

*October 23, 2008*

**5th Grade Math**

I agree

*October 23, 2008*

**Law**

Which activities are governed by the Canadian Charter of Rights and Freedoms and which are not? Describe the distinction.

*October 5, 2008*

**english**

In the following paragraph, are the words I have in capital letters adverbs? A five-speed bike combines the WORST of a three-speed and ten-speed. The typical five-speed is built on the same heavy frame as the three-speed, OFTEN, has the five-speed gear cluster and changer ...

*September 17, 2008*

**4th grade math**

My math problem is Round each number to the place of the underlined digit. 2,399,001 and the nine beside the three is underlined.

*September 17, 2008*

**4th grade science**

What parts of the world were covered with glaciers during the Ice Age?

*September 14, 2008*

**6th grade math**

What does solve by casting out 9's mean?

*September 7, 2008*

**English**

What is the subject of this sentence? Do you know anything about Areobics?

*September 7, 2008*

**calculus**

R^2+R^2=R^3

*September 7, 2008*

**6th grade**

doris cooksey work for the american family insuance company.

*August 27, 2008*

**Law and Ethics**

Hey! I am also doing the penn foster project 109. The AMA website instructions make no sense. There is nothing with the "E" in front of it. I've been going through it for 2 days now and getting more frustrated. I've just decided to google search the answers. ...

*July 20, 2008*

**Literature - short story**

mock heroics

*July 12, 2008*

**math**

can you show me how to solve this? 4a - 7 = 4(a-2) +1

*May 19, 2008*

**Algerbra**

I need to know what the answer is to: x^2-__+49/4=( )^2

*May 13, 2008*

**Algebra**

The time a group of high school students arrive home from school each day was found to be normally distributed. The mean time was 3:15pm and the times had a standard deviation of 15 minutes. What is the probability that a student chosen at random arrives home from school ...

*April 30, 2008*

**Algebra**

NVM i figured it out =)

*April 30, 2008*

**Algebra**

I get 4^1+1=5 divided by 5 =1?

*April 30, 2008*

**Algebra**

Find a counterexample to the statement 4^n + 1 is divisible by 5...how do i show my work for this problem? The example in my book is too confusing it doesnt really go into detail but just shows a table.

*April 30, 2008*

**ghost in city hall**

i wanted an explaination so can you guys show work

*April 26, 2008*

**Algebra 2**

I need help simplifying the following problems. 1) square root 16x^2y^4 2) 8y^3+27 / 2xy-10y+3x-15

*April 20, 2008*

**science**

If the San Andreas Fault, located in California, is to continue its activity, what does the future look like for that area? What precautions should be taken

*March 12, 2008*

**Chemistry**

Hey; I am doing a lab write up that has to do with NMR spectroscopy. Part of it asks to determine how many nonequivalent protons are in the compound 2-chloro-6-methylaniline, among other things. My problem is this is for kinetics class but this part of it has to do with ...

*February 26, 2008*

**math**

The second equation is telling you what x is..since it says " x=2y-8" this tells you that wherever you see an x you can replace it with that equation, so you would get: (2y-8)+5y-10=0 so then you would just solve for y to get 18/7. So now you know what y is you can ...

*February 26, 2008*

**Chemistry**

That does help for at least seeing what the spectrum will look like, but I still don't get a few things...how do you know what the equivalent protons are? How do I know the coupling pattern? Would it be a triplet because it has 3 peaks..or is that something totally ...

*February 11, 2008*

**Chemistry**

Hey; I'm currently in a kinetics class and I am trying to do a prelab for a lab that we haven't learned the material for yet and I'm really stuck, and we unfortunately don't have a textbook for the class so I was hoping someone could help. We have the compound ...

*February 11, 2008*

**American History**

To what extent might the mid-19th century belief in Manifest Destiny set the stage for the New American Imperialism at the end of the century? Can anyone please give me some hints to do this question?THANKS A LOT!

*February 4, 2008*

**music**

Why is P-Funk such an important element in the development of funk and hip hop?

*January 31, 2008*

**statistics**

sum of squares SS=E(x-u)squared in greek of course

*January 29, 2008*

**statistics**

Calculate SS, variance, and standard deviation for the following sample of n=9 scores:2,0,0,0,0,2,0,2,0.(Note: The computational formula for SS works best with these scores.) I keep getting the wrong numbers. Thank You.

*January 29, 2008*

**science**

1) In a syringe, what happens to the air paricles when you push the plunger? 2) In a syring, what happens the the air particles in the bubble from the bubble wrap when you pull up the plunger? 3) Are there more air particles in the bubble when it is compressed or when it is ...

*January 24, 2008*

**Business Math**

Terry has an 18-month installment loan for $1,700 at 12% annual interest. Interest is compunded using the Rule of 78. Terry decides to pay back the loan at the end of the first month. 1. What is the total finance charge on the loan? The answer is $306, but I don't see how ...

*January 14, 2008*

**Business Math**

Can someone please check over my answers? I'm not sure about them, especially part c. A small boat can be bought for $3,000 cash or on the installment plan by paying $300 down and $108 a month for 30 months. a) What is the installment price of the boat? $3,540 b) What is ...

*January 14, 2008*

**math**

the square root of 121 is X

*January 9, 2008*

**Science**

Ecological Surprises Do you believe the beneficial effects of spraying pesticides on Sabah outweighed the resulting unexpected and harmful effects? Explain.

*December 28, 2007*

**Inorganic**

Heyy, I have a quick question. I am doing binary systems, and I have a water/propanol system, and it says " 0.433 mole fraction propanol (71.7% propanol by weight)" does this mean that the mole fraction of water is 0.433 or propanol? Cause if propanol is 71.7% then ...

*November 20, 2007*

**Inorganic Chemistry**

Thanks alot = )

*November 18, 2007*

**Inorganic Chemistry**

Hello, I am trying to write a chemical equation for a reaction I did and I cannot for the life of me figure out how to do it. I added cobalt chlorid hexahydrate, NH4Cl, NH4OH, H2O2 and HCl. The major product was [Co(NH3)5Cl]Cl2 but I don't know what the other ones would be...

*November 18, 2007*

**Chemistry**

Hi; I'm just wondering, I need to write the dissocation equation for NH3 so that I can get Kb, and I just want to make sure that I am on the write track. I know that when some solids dissociate they just go from say CaCO3 --> CaO + CO2, but for this I'm wondering ...

*November 12, 2007*

**science**

during the mont f july its summer in virginia. where is it winter in july? north africa,argentina,or alaska

*October 22, 2007*

**social studies**

the meaning of the " pledge to the texas flag."

*October 9, 2007*

**Thermodynamics**

Hi, I am trying to do a prelab and I am really stuck... I have no idea how to go about this, I don't knwo if its worded funny or waht, so any help would be greatly apprecaited. The question is: (This is for a bomb calorimeter of constant volume) Benzoic acid is often used ...

*October 3, 2007*

**Thermodynamics**

I am doing a lab and there is one question I can't get. We have the enthalpy of fusion of crystalline polyeythlene, mass, onset temperature and energy required for a phase change of both low density polyethylene and high density polyethylene. They as to calculate the ...

*September 24, 2007*

**Thermodynamics**

I am doing a lab and there is one question I can't get. We have the enthalpy of fusion of crystalline polyeythlene, mass, onset temperature and energy required for a phase change of both low density polyethylene and high density polyethylene. They as to calculate the ...

*September 23, 2007*

**Help me with this question!!!!!!!!!**

"Connect" or"Connected"

*September 19, 2007*

**science**

Would it mean that the seasons of Winter and Summer would be longer and more extreme? As to how it might have an effect on the deflection of winds, I just can't figure that one out yet specifically. Length of days would not be effected, I think. If rotation speed was ...

*September 18, 2007*

**science**

If the earth's axis was tilted at 30 degrees instead of 23 1/2 degrees, how would that effect the seasons, or lengths of days, winds, etc. Or, would it have any effect at all?

*September 18, 2007*

**Social Studies repost for bob**

I would also include: Remember that This Too Shall Pass Pray Focus on health: sleep, rest, nutrition Meditate Yoga Pretend you are a role model for a younger person (they are watching how you handle this tough situation) Remember: what counts is not what's happening TO you...

*September 18, 2007*

**Thermodynamics**

I;m going to run through this and see if I can get it and understand it, the only thing I have a question about is why are we changing the percents to 70 and 30?

*September 16, 2007*

**Thermodynamics**

Heyy, Okay so I have a question that I'm trying to figure out how to do and I'm really lost, I was hoping somebody might be able to give me a hand. Thanks in advance. The question in general is, I know that the vapour pressure of CCl4 is 98mmHg at 25 degrees C. This ...

*September 16, 2007*

**science**

About how long does it take for sound to travel 1 Km?

*September 15, 2007*

**science, forces,pressure and moments**

Thanks bobpursley, both answers fit!

*September 12, 2007*

**science, forces,pressure and moments**

which surfaces have less friction than rough ones ans for a crossword 5 letters starts with s also a bit of oil reduces this 7 letters 3rd one i

*September 12, 2007*

**Journal Entry of a Subordinate Group Member**

I am with university of phoenix and I am having problems with the journal entry on subordinate group like what is listed at top of paper. I was trying to do it on Native Americans and I am not finding anything or maybe not going to the right site. please help.

*August 26, 2007*

**reading**

i really need to know the them for "the face on the milk carton". can anyone help me? Thank you for using the Jiskha Homework Help Forum. Sorry, but your question is not clear. If you mean "the theme" it is to try to locate the missing children pictured on ...

*August 6, 2007*

**reading**

i need to know what is the theme of the story "the face on the milk carton" Check these sites for information about themes in novels. Then you can make your own decision about the theme of The Face on the Milk Carton. http://www.thecore.nus.edu.sg/victorian/technique...

*August 6, 2007*

**math, bobpursley**

a) 7*6*5*4*3*2*1/5*4*3*2*1=7*6=42 possiilites b) 1*6=6 possible combinations c) 22 possibilites

*July 6, 2007*

**math correction**

a) 7*6*5*4*3*2*1/5*4*3*2*1=7*6=42 possiilites b) 1*6=6 possible combinations c) 22 possibilites

*July 6, 2007*

**Calculus**

so we are doing integrals and I have this question on my assignment and I can't seem to get it, because we have the trig substituion rules, but the number isn't even so its not a perfect square and I just cant get it, so any help would be greatly appreciated. The ...

*June 10, 2007*

**International business**

You are the chief executive officer of a multinational’s subsidiary in a developing host country. The subsidiary has been in business for about eight years, making electric motors for the host country’s domestic market, with mediocre financial results. Before you ...

*May 29, 2007*

**social studies**

what is the medical care like in a republic government? Is there any relation at all to medical care vs type of government? Didn't you believe me??!! http://www.jiskha.com/display.cgi?id=1177977129 =)

*April 30, 2007*

**Government**

What is the difference between a republic and democracy government? Democracy: http://www.answers.com/democracy Republic: http://www.answers.com/republic =) Thanks! What would the educational system be like in these ypes of governments? How would the people receive medical ...

*April 30, 2007*

**Chemistry**

Heyy, okay I have this chemistry assingmnet and its on kinetics, and I got every single one except this one question and I've been trying for over an hour. I know that I'm probably jus tmissing something but everything I've tried doesnt work. Any help is greatly ...

*March 20, 2007*

**math**

hi, i need help with solving this equation for "y" 2x+3y=-2 2x+3y=-2 Get y on one side. Subtract 2x from both sides. 2x-2x+3y=-2-2x combine terms. 3y=-2-2x Divide both sides by 3. 3y/3 = (-2-2x)/3 y = ?? how do you get -2-2x to divide by 3? I would just leave it as...

*March 11, 2007*

**eigenvalues/eigenvectors**

For the standard matrix { 1 -2 0} {-2 -1 1} {0 0 1} I found the eigenvalues to be -1, and +/- 5^1/2 I am having problems finding the eigenvectors of the root 5 values. Can someone set me straight?? Thanks

*March 7, 2007*

**Chemistry**

Heyy, okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The question is: A vessel of 6.84 L in volume contains 3.61 L of pure water at 25°C. A partial pressure of 3.67 atm of CO2 is quickly ...

*February 3, 2007*

**Maybe you know this one..**

Heyy, I posted this before but it kinda got pushed down and ignored, and I was hoping maybe DrBob might have an idea since no one else did! okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The ...

*February 3, 2007*

**Chemistry**

Heyy, okay I have this question about chemistry and its driving me nuts. It feels like I am so close but am just missing something. The question is: A vessel of 6.84 L in volume contains 3.61 L of pure water at 25°C. A partial pressure of 3.67 atm of CO2 is quickly ...

*February 3, 2007*

**Chemistry**

Okay so I'm doing an assignemtn and one of the questions has stumped me. It asks: The solid fuel booster rockets on the space shuttle employ a mixture of aluminium and ammonium perchlorate. The reaction is: 2Al(s) + 2NH4ClO4(s) â†’ Al2O3(s) + 2NO(g) + 3H2O(...

*January 21, 2007*

**Critical Thinking**

What is the meaning of validity, truth, and soundness as they relate to the area of logical syllogisms http://www.memoriapress.com/articles/logic.html scroll to Truth, Validity and Soundness What is the meaning of validity, truth and soundness as they relate to the area of ...

*December 17, 2006*

**trignometry**

use degree measure for your answers. use a calculator and round the results to one decimal place for (c) and (d) (a) in triangle ABC, sin B = square root of 2 all over 2. What are the possible values for angle B? my thought: since sin is positive in the first and second ...

*November 28, 2006*

**Calculus**

Hey there. I have a quick question. Ive done questions like these before so I don't know whats stoping me. Anways the question is this: Find a point on the graph of y = x^2 with x>0 that lies closest to (0, 3). What is the x-coordinate of such a point? So I got 3^2 + y^...

*November 17, 2006*

**science**

can anyone direct me to a site or help me find a good science project? The best science projects are the ones invented by yourself. Find something to explore, and do it. One of my favorites is testing local drinking water for nasty things: lead, cadmium, bacteria, cloroform, ...

*November 14, 2006*

**PHYSICS, PLEASE HELP TODAY!**

when it comes to chunks being ejected the masses are and velocities are 5kg(1737m/s), 10kg (184.3m/s), 100kg (1994m/s), 1000kg (2008m/s) What happens to the difference between the velocities as the number of chunks increases? What happens to the kinetic energy of the system ...

*November 10, 2006*

**More related rates.**

Heyy, its me again. So last night I asked a related rate question, and I think I still don't get it. I tried it a few differnt ways and I think I'm just missing something...I don't think a speed of a rocket can be 0.018km/hr:S. So heres what happened: A camera, ...

*November 3, 2006*

**Related rates,...again**

I also have another question (I'm not doing too good one these realted rates). A camera, located 2 km from the launch pad, is tracking the rocket that is fired straight up. When the height of the rocket is 20 km, the camera is rotating at the rate of 1/200 radians per ...

*November 2, 2006*

**Related rates**

Hey, I have a question on related rates and I'm a little rusty at them. I have an idea how to do this one but at a certian point i get stuck. The question is: Two cars leave the intersection, the first travelling south at 40 km/hr and another travelling west at 90 km/hr. ...

*November 2, 2006*

**Calculus**

Okay so I have a question on my assignment that says: You are given that tan(y) = x. Find sin(y)^2. Express your answer in terms of x. I know its derivatives, and I've tried taking the derivatives of both etc, and got them both to come out as cos(y)^2, which I know can be ...

*October 21, 2006*

**Calculus**

Okay so I have the following question and I am totally stuck: Newton's Law of Gravitation says that the magnitude F or the force exerted by a body of mass m on a body of mass M given by F=(GmM)/r^2 where G is the gravitational constant and r the distance between the bodies...

*October 12, 2006*

**Chem**

Okay so I have this assignment and I thought I knew how to do this but appearntly I am just lost. I know what the answer is suposed to be and I am deifantly no wheres near that. If you can sorta point me in the right direction that would be great. Thanks! The question is: The ...

*September 24, 2006*

**Chemistry**

We have been getting numerous questions like this on assignments and I can't figure them out. Its like I know that there some way connected but I can't figure it out. This is for Chemistry in highschool and its likea review and so they are not going over it but I would...

*September 17, 2006*

**Calculus Assignment**

Hey there. Okay well I just started first year university and we got an assignment to sorta brush up our rememberance of everything and well...I'm not remebering to well. If anyone can help me with this question that would be great. Thanks. The secant method of finding a ...

*September 12, 2006*