Sunday

July 5, 2015

July 5, 2015

**trig.**

in an algebra class of 21 students the mean grade on a test was 87; in another class with 32 students the mean grade was 81. What is the combined mean of the two classed? my teacher said it's 21 * 87 + 32 * 81/53= 83.4 but i'm not sure where the 53 came from.. thanks ...
*Monday, September 8, 2008 by jerson*

**6th grade**

What was a mansion like in the 80's
*Monday, September 8, 2008 by brandon*

**5th grade math**

I need help to solve for n n/80=30
*Monday, September 8, 2008 by Djamari*

**6th grade math**

A+B = A-B what are A and b
*Sunday, September 7, 2008 by polly*

**5th grade**

how many thousandths are in a hundredth?
*Sunday, September 7, 2008 by leah*

**6th grade**

unscramble the work broanalse
*Sunday, September 7, 2008 by Anonymous*

**10th grade math**

3(x-2)= 4-(x-2)
*Saturday, September 6, 2008 by Maria*

**english**

i have to write a ballad. The 1st and 3rd lines need to be in iambic tetrameter and 2nd and 4th in iambic trimeter. is this right? Today I told my friend about The dream I had one night. “This red rose grew alone In a small lot without sunlight.”
*Thursday, September 4, 2008 by Michelle*

**11th grade**

what exactly is chemistry?
*Thursday, September 4, 2008 by orlando*

**9th grade**

what is social health?
*Thursday, September 4, 2008 by zax*

**writing**

does anyone on here know how to grade a SAT essay?
*Thursday, September 4, 2008 by arick*

**7th grade**

wht is the 8 parts of speech
*Wednesday, September 3, 2008 by laura belizaire*

**9th grade**

whatis 1=1
*Tuesday, September 2, 2008 by manisha*

**1st grade**

What is the format to do a book report
*Friday, August 29, 2008 by leslie*

**4th grade**

what is 7 d in w
*Friday, August 29, 2008 by Anonymous*

**math grade 12**

solve for n if P(n,3)=2c(n,2), n{N
*Thursday, August 28, 2008 by joyce*

**5th grade**

i need help with factors
*Tuesday, August 26, 2008 by kendra*

**4th grade**

What are the communtative property of addition?
*Monday, August 25, 2008 by Jasmine*

**4th grade**

how to use lattice method?
*Friday, August 22, 2008 by Anonymous*

**8th grade science**

what is an example of suspension
*Wednesday, August 20, 2008 by marcus*

**Social Studies**

Okay! I don't know the correct terminology for what I call MINI-LAWS. MINI-LAWS are laws added on to one big law. Example: Math has to make up 1/3rd of all lessons taught. MINI-LAWS would include...grades 3-12, college exempt. So can you tell me what the correct ...
*Tuesday, July 22, 2008 by Minerva*

**Help Help**

Consider the following selection statement where X is an integer test score between 0 and 100. input X if (0 <= X and X < 49) output "you fail" else if (50 <= X and X < 70) output "your grade is" X output "you did OK" else if (70 <...
*Wednesday, June 11, 2008 by Anonymous*

**programming**

Can You Please help me understand how to do this and what i have to do to solve the problem.... Please!! Consider the following selection statement where X is an integer test score between 0 and 100. input X if (0 <= X and X < 49) output "you fail" else if (50...
*Wednesday, June 11, 2008 by Anonymous*

**grade 5 math**

the grade 5 class decided to collect cans of food to donate to the food bank .After the 1st week ,they had collected 8 cans . The next week they collected 11 more . By the 3 rd week they had 31 cans Following this pattern how long will it take for them to reach there goal of ...
*Sunday, May 4, 2008 by Jeff*

**feminism/ please revise**

In Manifesta, Jennifer Baumgardner and Amy Richards, analyze the generation gap between second and third wave feminist. The book begins with a historical development of women's rights and feminism; it provides a perspective from which to view of the past. The authors ...
*Tuesday, April 22, 2008 by christy*

**6th Grade Math**

I really don't know what to do on this question. If someone could start me off I could probably get the answer. Remember I am in 6th grade. Dani has a sack of 50 pens. Of these, 10 are black, 15 are blue, and the rest are red. If she grabs a handful of 5 pens, how many ...
*Monday, April 21, 2008 by Missy*

**Math**

A baseball diamond is a square with sides of 90 ft. long. a) to the nearest foot, what is the length of a throw from home to third base... b) what is the length of a throw from the shortstop position (midway between 2nd and 3rd) to 1st base
*Tuesday, April 1, 2008 by Anonymous*

**7th grade math**

PV/nR=T find the value for n
*Monday, March 31, 2008 by Anonymous*

**more pre cal logs**

sorry I am so lost I missed the class that talked about logs since my sister was in the hospital giving birth to a still born baby.... now I am all lost... Expand the log Ln 3sqrootx^2y/x+3 (the 3 is part of the sqroot not infront like the 3rd power) I hope that makes since
*Monday, March 31, 2008 by Deb*

**12th grade math help!!!!**

Who invented the lightbulb? Thanks
*Friday, March 28, 2008 by McKenna*

**social studies**

imagine that you are a member of the second continental congress.how would you write a letter to king goerge the 3rd explaining why you believe the colonies in north america should be allowed to peacefully seperate. this is social studies again and this would greatly ...
*Tuesday, March 25, 2008 by sam*

**Algebra 4th grade**

Evaluate each expression for x = 3 2x x (3x) + 5 --- 6
*Tuesday, March 18, 2008 by Angela*

**pre cal**

The 1st year and 3rd year periods for these accounts are the lengths of time that you must keep the money in the account. (You pay a penalty if you take the money out before the term is up.) Why might an investor choose a Certificate deposit with a shorter term rather than a ...
*Tuesday, March 18, 2008 by Brittany*

**Pre-Cal**

The 1st year and 3rd year periods for these accounts are the lengths of time that you must keep the money in the account.(you pay a penalty if you take themoney out before the term is up.) Why might an investor choose a CD with a shorter term rather than a longer one, even ...
*Tuesday, March 18, 2008 by Brittany*

**Astronomy**

If a space probe were sent into orbit around the sun that brought it as close as 0.5 AU to the sun and as far away as 5.5 AU, what would its orbital period be? Can I use Kepler's 3rd law for this? I'm not sure how to take into account both AUs...
*Monday, March 17, 2008 by Lindsay*

**chem**

a 1,000 ml coke bottle is 1/3rd filled with coke, and the rest occupied with air. Suppose this bottle is left outside and allowed to heat up to 120 degrees Fahrenheit. Assuming this bottle has an internal pressure of 768 mmHg how many atoms of gas are inside this container. ...
*Sunday, March 16, 2008 by Anonymous*

**math-probability**

Mary has 3 boxes with Marbles. Eavh box is labeled so that she knows what is in each box. She has 1 box with 2 blue marbles, another box with 2 red marbles and a 3rd box with 1 red and 1 blue marble. Mary's little sister removed all the labels and she placed them back ...
*Tuesday, March 4, 2008 by ASh*

**math-probability**

Mary has 3 boxes with Marbles. Eavh box is labeled so that she knows what is in each box. She has 1 box with 2 blue marbles, another box with 2 red marbles and a 3rd box with 1 red and 1 blue marble. Mary's little sister removed all the labels and she placed them back ...
*Tuesday, March 4, 2008 by ASh*

**arithmetic**

Word Problem: A hospital needs to figure the annual budget for an 11 bed facility based on 90% occupancy using a 4 day length of stay. 1st day = $625.00, 2nd day - $315.00, 3rd day = $315.00 and 4th day = $220.00. How much money can they expect to make for an entire year?
*Wednesday, February 27, 2008 by Raymond*

**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*