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*

**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*

**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*

**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*

**7th grade math**

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

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

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

**math word problem**

30 park visitors who played the same three games-the softball pitch, dart throw, and the ring toss. Every 5th person won at softball, every 10th person the dart throw, and every 15th person, the ring toss. How many of the 30 players won all three games?
*Thursday, March 27, 2008 by Mary*

**Algebra 4th grade**

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

**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*

**Math**

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

**7th grade geometry**

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

**3rd grade english**

wat is a noun
*Sunday, January 27, 2008 by Dakota*

**4th grade Algebra**

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

**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*

**Grade 10 MATH**

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

**essay please check writeacher**

Describe the world you come from- for example, your family, community or school -- and tell us how your world has shaped your dreams and aspirations Being the first in my family to attend college is not so easy. There has never been anyone at home to help or to guide me. I did...
*Thursday, November 29, 2007 by ace*

**Chemistry**

can anyone help me on my chemistry problem. i need a merck index to solve this. i have a PH of 10.7 and the nearest solution that is near to it is 10.32. The solution that is 10.32 is NaHCO3. i subtract both of them to get the ratio of log (HA)/(A-). i took that value to the ...
*Thursday, October 18, 2007 by Chris*

**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*

**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*

**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*

**MATH!!!**

To measure the length of a hiking trail, a worker uses a device with a 2-foot diameter wheel that counts the number of revolutions of wheel makes. If the device reads 1,100.5 revolutions at the end of the trail, how many miles long is the trail, to the nearest tenth of a mile...
*Sunday, May 13, 2007 by megan*

**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*

**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*

**Social Studies**

They can be 2-5 paragraph essays, not looking for excellent work just easy essays to turn in...if i dont do these i dnt pass my senior year, this is make-up work from 10th grade .. Essays i need done: -Charcter analysis of an epic hero(essay and sketch). -What is the role of ...
*Friday, March 23, 2007 by John*

**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*

**chemistry**

Can someone please help me with this problem? An iron nail placed in a beaker with a solution of silver nitrate will cause pure silver to collect on the bottom of the beaker. Write a balanced equation for the reaction that occurs. This is what I have so far: Fe + AgNO3 --->...
*Wednesday, February 28, 2007 by Donna*

**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*

**Chemistry**

If 100mL of 1mol HCL is mixed with 100 mL of 1mol NaOH, a temp rise of 6.2C occurs. What temp change will be obserbed, if under the same conditions, 10mL of 1mol NaOH is mixed with 10mL 1mol HCL? x Why wouldn't it be the same? One gets 1/10 th of the heat, but has only 1/...
*Thursday, February 1, 2007 by susie*

**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, Geometry and Physics**

An enemy ship is on the east side of a mountainous island. The enemy ship can maneuver to within 2500 meters of the 1800 meter high mountain peak and can shoot projectiles with an initial speed of 250m/sec. If western shoreline is horizontally 300 meters from the peak, what ...
*Tuesday, January 16, 2007 by Bob*

**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*

**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!*

**Noiuns**

Our son's 3rd grade teacher gave out a homework assignment which had the students make a sentence for each of their spelling words and then circle the "noun" in the sentence. We received his homework back from the teacher with the words, "I, you, He", ...
*Wednesday, October 25, 2006 by Richard*

**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♫*

**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 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*

**Botse botse high school **

Am a grade 10 learner n would like to know if i'll be able to become a social worker with the following subjects maths literacy , tourism , history and geography
*Tuesday, June 30, 2015 by Hellen*

**Physics 12-grade**

Find out if the force is conservative or non-conservative if the work done is W = x^2.y - x.z^3 - z.
*Tuesday, June 30, 2015 by jzee11*

**mugwazeni**

IAm doing grade 10 and my subject are;history ,geography and economics so I want to know what kind of work am I going to work
*Monday, June 29, 2015 by precious*

**economics,business studies,maths lit n accounting**

I want to study nursing can I still study it with the subject that I dd in grade 12
*Friday, June 26, 2015 by promise mogogorwane*

**Math**

Which is the best way to obtain a random sample when surveying a high school with 800 students about what to serve in the cafeteria. A.Only ask the 11th grade class. B.Draw a list of 50 students from a bowl with every student's name in it. C.Ask everyone who takes French ...
*Wednesday, June 24, 2015 by Anonymous*

**statistics**

A study of 600 college students taking statistics revealed that 54 students received the grade of A. Typically 10% of the class gets an A. The difference between this gourp of students and the expected value is not significant at the 0.05 level. What does this mean?
*Tuesday, June 23, 2015 by mary*

**psychology**

A behaviorist is asked to evaluate five students in the second grade who exhibit impulse control problems. The behaviorist decides it is best initially to study them in the classroom without interfering with their behavior. This behaviorist is conducting __________ research.
*Friday, June 19, 2015 by elly*

**6th Grade Math :(**

Gabriella went skiing. She paid $35 to rent skis and $15 an our to ski. If she paid a total of $95, how many hours did she ski? Write an equation to represent the situation and solve it. I don't understand this. I did this problem before and my teacher said my answer was ...
*Wednesday, June 10, 2015 by MusicLover14*

**6th Grade Probability**

You roll a number cube twice. Find P (even, then not 2). Write the probability as a fraction in simplest form. I'm fully clueless to the answer to this question. Can someone please help me out? Thanks Very Much and need the answer A.S.A.P!
*Wednesday, June 10, 2015 by MusicLover14*

**English**

Can you give me reasons why becoming a better community is important. My Original Essay Question: How can cities in the U.S. be better designed to create a safer and more economically productive community? I need you list a way or (a few ways) becoming a better community ...
*Tuesday, June 9, 2015 by Anonymous*

**6th Grade World History**

Which of these was a result of the Punic Wars? A. Rome lost Hispania to Carthage B. Rome destroyed Cannae and Ilpia C. Rome's navy became highly advanced D. Rome developed trade relationships with China Please Help As Soon As Possible! I don't know the answer to this ...
*Tuesday, June 9, 2015 by MusicLover14*

**Algebra**

I have a few questions on my Pre- Algebra Pre- test. I am in 7th grade. Anyone willing to help me for a few questions for 5-10 minutes?
*Sunday, June 7, 2015 by Rebecca*

**6th Grade World History Help Please!**

What was the role of the Roman Assembly? A. It consisted of eight judges who enforced the law B. It formed the executive branch in the Roman Republic C. It allowed plebeians to have a voice in government D. It expanded the role of the Roman noblemen I don't have a clue ...
*Friday, June 5, 2015 by MusicLover14*

**6th Grade Probability**

From a barrel of colored marbles, you randomly select 4 blue, 5 yellow, 6 red, 2 green, and 5 purple. Find the experimental probability of randomly selecting a marble that is NOT blue. A. 6/13 B. 1/2 C. 9/11 D. 3/8 Please help me fast! I have no clue how to solve this :(
*Friday, June 5, 2015 by MusicLover14*

**6th Grade Probability**

The probability of winning a game is 25%. How many times should you expect to win if you play 36 times? A. 3 times B. 7 times C. 9 times (I think it's the answer) D. 11 times Please help me! If I'm wrong can someone please explain to me why and the correct steps and ...
*Friday, June 5, 2015 by MusicLover14*

**7th grade English**

Both the authors of Zoos: Joys or Jails and the author of Why do we need Zoos : a. think animals should live in their natural habitat b.believe animals are protected in zoos c.wish people would make donations to zoos d. want to help wild animals, esp. endangered ones.
*Thursday, June 4, 2015 by Brian*

**5th grade math**

16 times 1=16 what property is this 1 times 18 =18 what property is this
*Wednesday, June 3, 2015 by Mythreyee*

**5th grade math**

What is he price of a hamburger and cheeseburger at this restaurant h+3c=$9.00 2h+c=$5.50
*Wednesday, June 3, 2015 by Mythreyee*

**civics 7th Grade**

Which of the following best describes how the natural resources of the united states allowed it to develop a diverse economy? A. A lack of arable land forced Americans to turn to tourism. B. Its many waterways allowed to ship goods inexpensively. C. It developed a worldwide ...
*Wednesday, June 3, 2015 by Nikol*

**Math: 5th Grade**

A florist had an equal number of red and yellow tulips. She sold 624 red tulips. Then she had 4 times as many yellow tulips as red tulips. How many tulips did she start with? You must use a bar model to solve this problem.
*Monday, June 1, 2015 by Alex*

**tourism.geography.maths lit.history**

what career must i follow because im in grade 12 now.help me plz
*Monday, June 1, 2015 by zahzah*

**Maths**

Colin paid $4 for 4 buns and 4 cakes. 3 buns cost as many as 2 cakes.What was the total cost of 5 buns and 5 cakes? (My teacher gave this to my class as a brainteaser. I'm Australian and I'm nowhere near the smartest in my class. My homework is due in 6 hours. I&#...
*Sunday, May 31, 2015 by Olivia :)*

**chemistry**

What is the density of propane gas, C3H8, when measured at 18 grade celcius and 744 torr pressure?
*Friday, May 29, 2015 by Dion*

**6th Grade Probability**

A number cube is rolled. What is P(3 or an even number)? A. 1/2 B. 2/3 C. 4/2 D. 1/6 The answer is B. 2/3
*Friday, May 29, 2015 by MusicLover14*

**6th Grade Probability**

A class of 21 students has 9 girls and 12 boys. What is the probability of a teacher randomly picking on a boy? A. 3/4 B. 4/7 C. 3/7 D. 4/3 The correct answer is B. 4/7
*Friday, May 29, 2015 by MusicLover14*

**5th grade math**

51 is 4 times the number of books, less 13
*Wednesday, May 27, 2015 by Mythreyee*

**5th grade math**

51 is 4 times of book is less 13
*Wednesday, May 27, 2015 by Mythreyee*

**5th grade math**

The sum of 6 and the product of 7 and a number is 75
*Wednesday, May 27, 2015 by Mythreyee*

**1st grade math **

Draw a quick picture for 26+8. Show how to make a ten to model the number of apples a different way. Write a new number sentence I did 26 + 8 apples .. I drew 8 apples = 34 then I put 7+ 3 = 10 ?
*Wednesday, May 27, 2015 by Sarah *

**1 st grade math **

draw a new quick picture for pablo's apples. show how to make a ten to model the number of apples a different way. write a new number sentence. 4 + 6 = 10 ?
*Wednesday, May 27, 2015 by Sarah *

**Language Arts 6th grade **

This is from Phantom Toll Both. I am having trouble finding similarity and differences can you give me a hint of start me off that would be great. At least two ways which Tock and Humbug are alike and different
*Tuesday, May 26, 2015 by Stephanie*

**4th grade Science (Please Help!)**

Bowl A and Bowl B are filled with the same amount of water. Bowl A is covered in plastic wrap. Both bowls are left on a counter. The water level is checked in both bowls after 1 week. What is the independent variable? PLEASE HELP.
*Sunday, May 24, 2015 by Yellow*

**4th grade Science (Please Help!)**

Bowl A and Bowl B are filled with the same amount of water. Bowl A is covered in plastic wrap. Both bowls are left on a counter. The water level is checked in both bowls after 1 week. What is the hypothesis? Please HELP!
*Sunday, May 24, 2015 by Yellow*

**Algebra**

Is factoring equations a basic 9th grade skill?
*Friday, May 22, 2015 by Peach*

**Math**

How many questions are on the 9th grade math scantron performance series test?
*Friday, May 22, 2015 by Peach*

**5 th grade math**

at a grocery store salted peanuts in the shell cost 30 cents per ounce. is $5.00 enough money to buy 1 pound of peanuts?
*Thursday, May 21, 2015 by 5th grade math*

**6th grade math**

Mrs Roberts is 3 times as old as her son. The sum of their ages is 48 years. How old was Mrs. Roberts when her son was born?
*Wednesday, May 20, 2015 by Sandy*

**4th Grade Math**

The ratio of the number of dogs to the number of cats at an animal shelter is 5:4, if there is a total of 153 cats and dogs, how many cats are in the shelter
*Wednesday, May 20, 2015 by Sandy*

**English**

We can walk and ride a bike when I go to school. ========== Is this sentence grammatical? When we grade this short sentence in terms of grammar, can this sentence get A? Or is it totally wrong?
*Monday, May 18, 2015 by rfvv*

**7th grade English **

Which of the following traits distinguishes Miss Whitlaw from other "demons"? A. Generousity B. Independence C. Morality D. Height
*Monday, May 18, 2015 by banny*

**grade (5) math**

Design a rectangular dog pen that has the greatest possible area and keep within a budget of $50. Your pen needs at least one gate for your dog. Fencing is $1.00 per foot, fence posts are $2.00 each, and gates(3 feet wide) are $5.00 each. What is the area of a pen? pls help me!!!
*Monday, May 18, 2015 by ary*

**programming concepts**

Mr. Jones always gives True/False tests to his class. His tests always have 20 ques- tions. The maximum class size is 35. He needs a program that will calculate the stu- dents’ grades based on the best score. Grade A will range from the best score, to the best score minus...
*Friday, May 15, 2015 by sam*