Tuesday

December 1, 2015
**Calculus**

The problem with these two questions is that I cannot determine the a and r. The 3rd question-I don't know what I did wrong. Thanks for the help! Tell whether the series converges or diverges. If it converges, give its sum. infinity (sigma) sin^n (pi/4 + n pi) n=0 answer: ...
*Friday, February 22, 2008 by Anonymous*

**Intro to Probability, please check my work.**

A fair coin is flipped three times. You win $5 every time the outcome is heads. Let the random variable X represent the total number of dollars you win. (a) List the sample space. (b) Determine the probability function of X. ====================== Answer: a) 2^3= 8 ...
*Sunday, February 17, 2008 by Amelie*

**proofread**

Hi, can someone proofread this for me. I'll appreciate it. Thanks in advance. The practicum site I selected is an elementary school. I will be assisting a first grade teacher during the semester. I will be helping her with her students and with other teacher ...
*Sunday, February 3, 2008 by Bizzy*

**Physics**

Each of the following statements has 1, 2, or 3 conceptual flaws. Explain what is wrong with each sentence (I just need help finding a website for this) 1. A rocket moves through space because the exhaust from the rocket's engine pushes against the atmosphere. 2. If an ...
*Friday, February 1, 2008 by Aestas*

**Math**

Can i please get your help on fractions and i am in the 7 th grade
*Wednesday, January 30, 2008 by Derricka*

**grammar**

ok so my English teacher is making us write a story & here is the prompt. "imagine you are a travel agent try to persuade a family of four to buy a trip". that is like so easy but the catch is, we have to write it in 3rd person. im totally confused there. help anyone?
*Monday, January 28, 2008 by Kalena*

**7th grade geometry**

pr/ac = ?/cb pr=6,ac=?, cb=15
*Monday, January 28, 2008 by traci*

**math**

If stacy jogs every 3rd day and swims every 4th day what day of the week will she end up on
*Monday, January 28, 2008 by tyler*

**4th grade Algebra**

How to solve this problem. 3X-Y=12
*Thursday, January 24, 2008 by Serena*

**3rd math**

Laura and her brother planted bean seeds. When Laura plant was 25 cm tall, her brother plant was 32 cm tall. How much taller was her brother plant?
*Tuesday, January 22, 2008 by LaNoria*

**Chemistry**

Can someone check my answers for me thank you. This is my 3rd time posting this one up...maybe its just not going through bc I don't see it on the current ?s. 4NH3 + 7O2 --> 4NO2 + 6H2O 1)How many grams of oxygen are necessary to produce 4.50 moles of NO2? answer: 252 ...
*Wednesday, January 9, 2008 by Mike*

**5th Grade Math Problem**

If 1=4, 2=7, 4=13, 5=16, 8=25, what is the pattern?
*Thursday, December 20, 2007 by Mathew*

**college math**

13. (4 pts) At an annual flower show, 6 different entries are to be arranged in a row. a) How many different arrangements of the entries are possible? b) If the owners of the 1st, 2nd, and 3rd place entries will be awarded prizes of $100, $50, and $25 respectively, how many ...
*Wednesday, December 12, 2007 by Rose*

**Grade 10 MATH**

17^115
*Wednesday, December 5, 2007 by Vincent*

**computers**

which set of terms below correctly pairs a generation of computers with key innovation associated with it? a. 2nd generation/ intergrated circuits b. 3rd generation/programming languages c. 4th generation/ operating systems d. 5th generation/artificial intelligence
*Monday, November 12, 2007 by holli*

**math**

An instructor counts homework as 1/3 of the student's grade and the final exam to be 2/3 of the student's final grade. Going into the final exam a student has a homework grade of 48%. What range of scores on the final exam would put the student's final average ...
*Sunday, September 30, 2007 by Jessica*

**science (physics) Need to solve this today please**

(a) Express the vectors A, B, and C in the figure below in terms of unit vectors. (b) Use unit vector notation to find the vectors R = A + B + C and S = C – A – B. (c) What are the magnitude and directions of vectors R and S? Well the picture goes and has a vector A ...
*Saturday, September 29, 2007 by ~christina~*

**chemistry**

Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20% 1,10-phenanthroline 4th: 1.00 mL ...
*Saturday, September 15, 2007 by smiley*

**chemistry**

Why is it important that the sequence of addition of reagents be followed? What could possibly go wrong when this is not followed? Reagents added: 1st: Fe3+ solution 2nd: 2.00 mL 10% NH2OH-HCl (hydroxylamine hydrochloride) 3rd: excess 0.20% 1,10-phenanthroline 4th: 1.00 mL ...
*Saturday, September 15, 2007 by smiley*

**Math**

I am tring to finish my 10th grade. I got hurt last Jan. 2007. And was force to quit public school. In short of every. I started online schooling and I have to write an essay for a final grade in Math compare three college to each other and make a graph telling which school ...
*Thursday, September 13, 2007 by Cody*

**Social Studies**

How do you start a community? Please explain your question. Are you asking about how to start a town of people? Or a community of crayfish? Or a special interest community, such as a club or a church? We'll be glad to help you if you clarify your question. We are asking ...
*Thursday, August 16, 2007 by Armani*

**Algebra II**

Provide three points on a graph for the equation y = -2/3x + 4. I have the points (0, 4) and (6, 0). Do you have any idea what a 3rd one might be? Ther are an infinite number of possibilities. Just pick any x you like (except for the two you already have) and compute the y for...
*Friday, July 13, 2007 by Rebecca*

**Math23456**

Problem:4x^2y^3 Choices: a.2nd degree b.3rd degree c.4th degree d.5th degree What I think:I think it is letter C. It is degree 3 in y. It is degree 2 in x. Normally, one would call this a degree equation , or a cubic equation.
*Friday, June 29, 2007 by Margie*

**math 3rd part**

b.The company is projecting a 20% growth each year for the next four years. How many technicians should the company’s Human Resource Manager plan to hire in each of the next four years? 1st year: 8 x .2 = 1.6 2nd year: 9.6 x .2 = ? Continue this pattern for the next 3 ...
*Sunday, June 24, 2007 by dEE*

**Simplfing Fractions**

Three problems I need to know if I am correct or not if not I will place how I got the answer and maybe some one can show me where I messing up aT Simplify 1+2/3 over top 2+1/2 My answer was 2/3 to me it does not seem right If I am wrong please let me know i will put all the ...
*Friday, June 1, 2007 by Toni*

**physics-please check**

is this right?: when a form of energy changes from one form to another some energy may transfrm into a useful form, those useful form of energy is high grade energy.while the rest of the energy will always change to form we cannot use.which is called the low grade energy. if i...
*Monday, May 14, 2007 by Emma*

**history**

on the 1st page can someone please help me??????? Its the 2nd and 3rd black dot next to my nasme. Even if this is a repost, more information needs to be given before we can adequately respond. Please repost with more information. Thanks for asking.
*Sunday, April 29, 2007 by Mack*

**English**

I am doing a reading comprehension project and I need to find a book and a song about "the elderly". Please Help!! do you mean like about old people or a book called The Elderly? about old people. about old people. hang on I'll look google Books About the Elderly...
*Sunday, April 29, 2007 by Suzanne*

**algebra**

Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. write an inequality representing the score that sam must get on the last test to get a C grade http://www.jiskha.com/display.cgi?id=116...
*Tuesday, April 24, 2007 by stumped*

**1st grade math please help!!!**

8...
*Tuesday, April 24, 2007 by Noel*

**socail studies**

This one question is about the revolutionary war. What action finalized the colonies independence from great britian? A. a mutuat agreement with parlament B. a vote in the continenal congress C. an order of Genral George Washington D. a royal decree from kind George the 3rd. I...
*Thursday, April 19, 2007 by Amy L.*

**trig**

it says solve for all real solutions, compute inverse functions to 4 sigfigs. cos^2x=3-5cosx Devon, what grade level are these questions from? I am having the same problems as with your 9:14 post. Please see my partial solution in the post to bobpursely at 10:54 Devon, I have ...
*Monday, April 16, 2007 by Devon*

**math**

3 workers picked 66 bushels of peaches. The 1st worker picked 3 times more than the second worker and 2 times more than the 3rd worker. How many bushels did the second most productive worker pick? Let the number of bushels picked by the second worker be x. The first worker ...
*Tuesday, April 10, 2007 by LOis*

**Math**

At an annual flower show, 6 different entries are to be arranged in a row. a) How many different arrangements of the entries are possible? b) If the owners of the 1st, 2nd, and 3rd place entries will be awarded prizes of $100, $50, and $25 respectively, how many ways can the ...
*Monday, March 26, 2007 by Jennifer*

**Math**

At an annual flower show, 6 different entries are to be arranged in a row. a) How many different arrangements of the entries are possible? b) If the owners of the 1st, 2nd, and 3rd place entries will be awarded prizes of $100, $50, and $25 respectively, how many ways can the ...
*Sunday, March 25, 2007 by Jennifer*

**Math**

Are you trying to solve for x, n or p? solve for n Show me how to work this problem. 2n = 4xp - 6 what is the problem? what grade r u in iam in 6 grade To get n all by itself, you need to divide by 2. But if you divide by 2 on the left, you have to divide by 2 on the right...
*Wednesday, March 14, 2007 by drwls*

**Business law**

If articles of incorporation are supposed to be prepared by a lawyer and the partners of a business are told they will be formed by may 3rd and the partners begin conducting businss on the 4th are they held personally liable if anything were to happen? After all the lawyer ...
*Monday, March 12, 2007 by Ryan*

**math**

it is cross math (like sudouk) six rows across and six rows down 1st row has empty box, +, empty box, + box =6 this row is across 2nd row has x blacked out box, +, blacked out box, x, blacked out box this row is across 3rd row across is empty box, +, empty box,/ (division sign...
*Monday, March 12, 2007 by vince*

**Sequence**

Find the common difference and a formula formula for the nth term of the arithmetic sequence; 6, 2, -2, -6, -10,...a sub n = a)6-4n b)6-2n c)10-2n d)10-4n I think it is c but want to check. Ao is 10, then each term subtracts 4n from it....n=1, ... well if 6 is equal to the ...
*Friday, March 9, 2007 by raven31792*

**Science**

An object travels 8 m in the 1st second of travel, 8 m again in the 2nd second of travel, and 8 m again during the 3rd second of travel. its acceleration in meters per second per second is? Would the answer to this question be 0? I'm not positive, but wouldn't the ...
*Thursday, March 8, 2007 by Anonymous*

**SPANISH**

QUE PASA? TA BIEN? QUE LO QUE? WHAT DOES THIS MEAN. IT MEANS..WHAT HAPPENED? ARE U OKAY? QUE LO QUE IS MORE SLANG FOR HOW ARE U? Thank you for using the Jiskha Homework Help Forum. ¿Qué pasa? means "what is happening." The 2nd is probably "está ...
*Wednesday, February 28, 2007 by A*

**math**

Derivatives are usually not taught in 5th grade. That is what your question is about: Rates of change. Complete the following statements with the correct words Note: Correct spelling is important. If s(t) is a distance (or height or position) function, then s'(t) would be ...
*Monday, February 19, 2007 by drwls*

**math**

how do you do fractionation? huh??/ What grade are u in?
*Wednesday, February 7, 2007 by Nikki*

**Math Help Please (I Am New In This Website)**

How do you multiply 367 by 72? the answer depends on your grade. Tell us what Grade in School you are in. Multiply 367 by 2; write down the answer. Multiply 367 by 70; add it to the answer above. Let us know what your answer is and someone here will give you feedback.
*Saturday, January 27, 2007 by Shaina*

**Math**

I am doing Partial Quocients Division for homework. And I need help.But, my mom didn`t learn this method.And my dad`s gone on buisness, my brother doesn`t know how to do it, my other brother is doing his homework and my sister is only in the 3rd gade. What should I do? Post a ...
*Wednesday, January 24, 2007 by Kylie*

**Biochemistry**

True or False Cofactors and coenzymes are usually larger than enzymes and participate in catalysis . http://en.wikipedia.org/wiki/Coenzyme Notice the 3rd word under the definition when at the above site.
*Wednesday, January 24, 2007 by Shawn*

**trig**

if 10 students enter projects in the art show, how many different ways can they come in 1st, 2nd, and 3rd place? would you go 10^3 OR 10TIMES 3? This is not a trig question. Neither of those answers is correct. After making one of ten possible choices for first place, there ...
*Thursday, January 18, 2007 by Dom*

**math,correction**

can someone correct this for me please. Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C ...
*Tuesday, January 9, 2007 by jasmine20*

**math correction**

can someone correct this for me.or teach me if i'm wrong Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75,63, and 68. Write an inequality representing the score that Sam must get on the last...
*Monday, January 8, 2007 by Jasmine20*

**french**

how do i do subjontive? how do i know that i am doing it right? the endingings : e,es,e,ions,iez,ent - do i use those for every verb i use? for -ir verbs, do i also add -iss, or is that onlyfor imparitive? merci! Thank you for using the Jiskha Homework Help Forum. It would ...
*Wednesday, December 20, 2006 by MiChElLe!*

**Pre-Cal**

Recursive Sequences: find a formula for: 1,1,2,3,5,8,13,21 It looks like the Fibonacci sequence. Take the first two numbers and add them to get the 3rd. take the 2nd and third to get the fourth...etc. yeah, but how would i write that into a formula?
*Wednesday, December 6, 2006 by James*

**3rd grade social studies**

where can i find some good information on christopher columbus for a good report. http://en.wikipedia.org/wiki/Christopher_Columbus and http://www.columbusnavigation.com/ and http://www.ibiblio.org/expo/1492.exhibit/c-Columbus/columbus.html =) thanks thanks
*Tuesday, December 5, 2006 by zeke*

**Music**

I have a couple of questions... 1. I have to transpose a musical piece that is in B flat. I need to move it up a major 3rd from that. What key would that be in? 2. I have questions about diminishing intervals as well. Please help.
*Wednesday, November 29, 2006 by Katie Bunting*

**liturature**

What does the term 'craft technique' mean? Example:"What is one author's craft technique found in this text that makes the writing lively?' See my answer to your question below. =) What is a story with one or more level of meanings? i need help on learning...
*Wednesday, November 8, 2006 by Sharon*

**Algebra1234567890!**

(-mn8)3 would it be: -m^3n^3164 (-mn8)3 = -24mn Without carrots I have no idea where your exponents are. how?I don't get this one? Is this Sandro from Mrs.Pfeiffer's class?What grade are you in? Leo is saying you need to use carets to show an exponent. As you have ...
*Wednesday, November 8, 2006 by Sandro!*

**spelling**

I am a step mom to 3rd grade twins. One of them is failing her spelling tests repeatedly. I have very limited time with them and don't talk to them very often, nor am I allowed to speak to the teachers. I have looked at the LMC for books on spelling but don't really ...
*Wednesday, November 1, 2006 by shelly*

**Geography**

what do blue lines mean on a map? http://www.leisurelybackpacker.com/a_compass.shtml 3rd paragraph down
*Monday, October 23, 2006 by cindy*

**Evaluation-repost**

Reposting because it has gone down to the second page! Evaluate 1. sin(tan inverse sqrt(x^2-2x)) 2. tan (sec inverse 3y) For 1. draw a right triangle and label the opposite leg sqrt(x^2-2x), the adjacent side 1 and the hypotenuse x-1. Do the calculations to see why this is so...
*Monday, October 23, 2006 by Jen*

**a.p. calculus help please!**

My a.p. calculus teacher doesn't know how to do this problem (like many others) so he's giving us 5 points extra credit on our test if we can figure it out, but I don't know how to do it: It's as the lim-->infinity (x+sinx)/(x+cosx) We know the answer is 1 ...
*Sunday, October 22, 2006 by teamcaridee*

**physics**

I'm supposed to design a device that will protect a raw egg, GRADE A, (not that its really important to know what kind of egg it is... LOL) But, it will drop from a 12 FOOT height to a concrete floor. The only materials that I'm allowed is about 9 sheets of "8.5 X...
*Friday, October 13, 2006 by ♫αƒℓ ♥ ℓιηєя♫*

**Economics**

Demand is given by Q=9-P. If price is $4, what is the consumer surplus from the third unit of the good? Consumer surplus is the amount a person would pay less the amount he/she actually pays. So, using algebra, rewrite the demand equation as P=9-Q. The person buying the 3rd ...
*Sunday, October 8, 2006 by Mary*

**math**

the bus route also passes through balmorhea which is 1 3rd of the way from el paso to san antoio. about how long does it take the bus to get to balmorhea You told us the distance from El Paso to San Anotonio is 560mi, so the distance to Balmorhea = 560/3. Using distance = rate...
*Monday, October 2, 2006 by chemiii*

**Math**

I can not find the solutions to the following problems using 2 methods: algebraically and geometrically. 1. X with the square root of 2 =9 2. X with the square root of 3 =27 3. X with the square root of 4 =27 --Note: Fourth root I'm not sure what you mean by "1. X ...
*Thursday, September 28, 2006 by Doris*

**homework !!**

My daughter did excellent in school last year (grade 1) She was reading at a grade 2 level, and loved school. Now, she says she can't read, won't read and when she tries she is getting all the small words wrong. Is she playing me or does she have a problem?? My first ...
*Tuesday, September 19, 2006 by Stephanie*

**Language Arts**

I left my McMillian text book for language arts in school today and I have homework on page 2 and 3. I'm in the 6th grade does anyone have that book. I really really need those questions. I don't know if this gives page numbers that correspond with your text or even if...
*Monday, September 11, 2006 by Tatyana*

**math**

what do we call the numbers that cannot be arranged into 2-row arrays? I think this is the 3rd time I've seen this question posed. I'm not aware of any special name for arrays with two rows, so I'd sure be interested to see what the quesioner has in mind here. As ...
*Wednesday, August 30, 2006 by Kristy*

**math**

My 3rd grader brought home a math worksheet and I'm not sure about the answers, so I wanted another opinion. Estimate each sun or difference by rounding. 23 + 71 so, do you answer the prblem and then write the rounded numbers to the right or do you just round the answer? I...
*Tuesday, August 29, 2006 by Jennifer*

**math question**

hi, i have a math question that i need help with: when data are non-numerical but can be ordered, such as letter grades, the mean cannot be calculated directly; but both the median and mode can be found. Last year in Ms. Flag's history course, the final grades were 8A'...
*Tuesday, August 29, 2006 by kelsey*

**math**

how would you solve for y in this problem: x=(y^2+3y)^(1/3) I got: y= x^3/y - 3 ? and for this problem: x= 1/[(y^2+3y-5)^3] I got: y = y/x + 5/y - 3? However, I do not know how to solve for y explicitly. I don't think quadratic formula would work in these problems. Please ...
*Thursday, July 20, 2006 by kristie*

**math**

What is temperature when you do math. In seventh grade math is hard and I don't understand what my teachers tell me they say that it is easy but i don't think it is i need a lot of help during math it used to be my favorite subject but now its not
*Monday, November 30, 2015 by Maria*

** 6 grade Math**

241.5 grams of gold has a volume of 12.5 cubic cm. what is the volume of 193.2 grams of gold How do you set this problem up?
*Monday, November 30, 2015 by Kj*

**Statistic**

professor has found that the grades on a Statistics Exam are normally distributed with mean 72 and a standard deviation of 12. If only the best 15 % of the grades in the class will get an A, what grade must a student get in order to get an A?
*Saturday, November 28, 2015 by George*

**accounting I**

stock outstanding as follows: 15,000 shares of cumulative 4%, preferred stock of $20 par, and 19,000 shares of $100 par common. During its first four years of operations, the following amounts were distributed as dividends: first year, $4,500; second year, $6,300; third year...
*Saturday, November 28, 2015 by eddie*

**Medical Billing and coding**

Can I retake a Quizz to help raise my grade?
*Thursday, November 26, 2015 by Melodee*

**CAT, Business studies, Life Sciences and Pure Math**

I'm not so sure if I should be changing Life Sciences to Consumer Studies OR business to Consumer Studies.. I don't know what I wanna do in varsity. would you kindly assist me on both subjects and career.. I'm in grade 10
*Thursday, November 26, 2015 by Lihle*

**willowmead sec school**

I am in grade 10 and am doing economics and business studies and tourism and maths lit so I want to know what carees I can take and that carees must have money
*Tuesday, November 24, 2015 by noluthando*

**7th grade math**

Mike's school bus picks him up from his home. It travels 15 miles north and then travels 8 miles west to reach school. What is the shortest distance between Mike's home and his school?
*Sunday, November 22, 2015 by canaan*

**math 5th grade**

Victoria has 2 pounds of flour, she uses 2/5 for pizza and 3/10 for bread. Find the weight of the pack of flour that is left..Express in decimal answer. 32 ounces of flour is what she has she uses 2/5 x32=64/5=12and4/5=12.8-32=19.2remaining flour she then uses 3/10 x32=96/10=9...
*Saturday, November 21, 2015 by mary*

**math**

for grade 3 math-- Explain what happens to the square if you double the length of its sides.Draw 2 squares to support your answer
*Saturday, November 21, 2015 by Ana*

**math 5th grade**

Victoria has 2 pounds of flour she uses 2/5 of flour for pizza and 3/10 of the flour for bread. Find the weight of the flour she has left. Express in decimal form. I worked on this and the answer I came up with was 19.2 lbs left?
*Thursday, November 19, 2015 by mary*

**7th Grade Proportion Help**

A 10 acre field produced 750 bushels of corn. At that rate, how much corn can be produced from a 14-acre field? I really need help understanding this question I'm not looking for the answer. Please Help Me!
*Thursday, November 19, 2015 by MusicLover14*

**Physics**

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
*Thursday, November 19, 2015 by Sara*

**Physics**

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
*Thursday, November 19, 2015 by Sara*

**Physics**

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using Stefan-...
*Thursday, November 19, 2015 by Sara*

**4th grade math**

Mary purchased incredients needed to cookies. a table shows the cost for each batch of 5 dozen cookies. ($10.00 total) and the price of cookies = 1/2 dozen = $5; 1 dozen = $8 and 5 dozen = $35. question is if mary sells 3 dozen cookies. what is her profit??
*Wednesday, November 18, 2015 by Kyle*

**8th grade Pre Algebra**

Seriously stuck on this: "Find the LCM of n^3 × t^2 and n × t^4?" 1) n^4 × t^6 2) n^3 × t^6 3) n^3 × t^4 4) n × t^2 Can anyone help? URGENT! NEED THIS ANSWERED ASAP!! :( Thanks for your assistance in advance, NatR
*Wednesday, November 18, 2015 by NatR*

**5th grade math word problems**

abby has been practicing for her soccer game. She has been running 5/8 of a mile every day for 4 days. How many total miles does she run?Use a representation and write an equation. I do not understand what a representation is and would I multiply fractions or add them?
*Wednesday, November 18, 2015 by reid*

**science **

how do i write a hypothesis for non truebreeding plants, i am in 7th grade
*Tuesday, November 17, 2015 by suzy*

**6th grade algebra**

what expression represents a number n divided by eight increased by five? n/8+5 is this correct?
*Tuesday, November 17, 2015 by Lynn*

**History vocabulary **

I have looked every where. I am in honors 7th grade history. Help please I need a sentence with the word mullah and jihad?
*Tuesday, November 17, 2015 by Daniel *

**Social Studies Grade 8**

These are the times that try men's souls was written by____. (1 point) William Howe planned to capture the American capital which was located in ____. (1 point) What was the significance of the American victory at Saratoga? (1 point) Which of the following statements was ...
*Monday, November 16, 2015 by Gracelyn*

**chemistry Dr BOB**

In many residential water systems, the aqueous Fe3+ concentration is high enough to stain sinks and turn drinking water light brown. The iron content is analyzed by first reducing the Fe3+ to Fe2+ and then titrating with MnO4- in acidic solution. Fe2+(aq) + MnO4-(aq) ? Mn2+(aq...
*Sunday, November 15, 2015 by Dalton*

**Chemistry Dr. BOB**

In many residential water systems, the aqueous Fe3+ concentration is high enough to stain sinks and turn drinking water light brown. The iron content is analyzed by first reducing the Fe3+ to Fe2+ and then titrating with MnO4- in acidic solution. Fe2+(aq) + MnO4-(aq) ? Mn2+(aq...
*Sunday, November 15, 2015 by Dalton*

**Math 6th grade**

I do not understand verbal representation. Graphic re presentation? Numerical representation?
*Sunday, November 15, 2015 by Nicole*

**Allanridge Seconday School**

I'm doing History , Life science, Geography and maths literacy......I want to do carreers that relate to helping people and assisting them, I'm more focused on doing therapy when I pass grade 12, So how many percentages is it garanteed that I can get a job after Matric
*Saturday, November 14, 2015 by Gugu Hope Mbolambi*

**accounting and finance**

4. Dividends Per Share Scan Tech Inc., a developer of radiology equipment, has stock outstanding as follows: 24,000 shares of 2%preferred stock of $75 par, and 100,000 shares of $8 par common. During its first four years of operations, the following amounts were distributed as...
*Thursday, November 12, 2015 by Anonymous*

**math**

of the 200 eighth-graders,70 are going on the class field trip.what percent of the eighth grade is going on the field trip A 35% B 40% C 65% d 70% i can't find the answer?
*Thursday, November 12, 2015 by need help*

**8th grade algebra**

If 1/3 is equivalent to 33 1/3%, what percent is equivalent to 2/3? A: 33 2/3% B: 150% C: 66 2/3% D: 65% I have no idea... Can someone explain? :\
*Thursday, November 12, 2015 by Angel <3*

**physical science**

Memo of physical science question 7 November 2014 grade 11
*Thursday, November 12, 2015 by Anonymous*

**maths lit,physics,life science n tourism**

i don't know which career to choose can you help me ?I'm doing grade 11.
*Thursday, November 12, 2015 by anita *