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September 17, 2014

September 17, 2014

Post a New Question | Current Questions

**4th grade math**

A carpenter has several boards of equal length. He cuts 3/5 of each board. After cutting the boards the carpenter noticies he has enough pieces left to make up the same length as 4 origional boards. How many origional boards did he start with? Someone told me the answer is 10 ...
*Wednesday, January 9, 2013 at 8:51pm*

**Math 8R - Operating with Scientific Notation HELP!**

In constructing the Mall of America in Minnesota, a total of 1.3 x 10 (to the 4th power) tons of steel were used. The Eiffel Tower in Paris, France consist of 7 x 10 (to the 3rd power) tons of steel. About how many times the amount of steel it took to construct the tower did ...
*Tuesday, November 20, 2012 at 7:30pm*

**4th grade math**

387,422 round to the nearest thousand 124,607 round to the nearest ten thousand 111,022 round to the nearest hundred 276,431 round to the nearest ten thousand
*Thursday, November 15, 2012 at 4:32pm*

**Math**

A coffee dealer mixed 12 pounds of one grade coffee with 10 pounds of another grade of coffee to obtain a blend worth $54. He then made a second blend worth $61 by mixing 8 pounds of the first grade with 15 pounds of the second grade. Find the price per pound of each grade.
*Sunday, October 21, 2012 at 12:23pm*

**Mathbio in 12th science**

2)a stone of mass 1kg tied to one end of a string of length 1m whirld in a horizontal circle with a costant speed 2 radian/second tension of the string is. A)0.5n b)1n c)2n d)4n 3)the orbital velocity of a satelight close to the earth is v then the orbital velocity at a height...
*Thursday, October 18, 2012 at 12:51am*

**math**

Hi I am trying to help my 4th grade daughter with homework and I am stuck with this question. Please help and explain how you got the answer. Thanks Jill's fish weighs 8 times as much as her parakeet. Together, the pets weigh 63 ounces together. How much does the fish ...
*Wednesday, October 17, 2012 at 7:54pm*

**science**

Is venus the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th smallest planet? Also is it the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th or 9th largest planet?
*Tuesday, October 9, 2012 at 4:19pm*

**4th Grade Math**

I have an 8 in the ten thousands place, My hundreds digit is greater then my ten thousands digit, My ones digit is the number of right angles in a rectangle, my tens digit is the difference between thirteen and my ten thousands digit, my value is less that 87 thousand but ...
*Wednesday, September 19, 2012 at 8:04pm*

**4th grade math**

Find the mystery number. It is a 4 digit odd number. All the digits are different. None of the digits are 0 or 9. The tens digit is twice the ones digit, and the hundreds digit is twice the tens digit. The thousands digit is one less than the hundreds digit.
*Wednesday, September 19, 2012 at 7:31pm*

**eng 4th grade **

we threw her a surprise party because it was her birthday. underline the cause and circle the effect cause: it was her birthday effect: we threw her a surprise party is this correct?
*Thursday, September 6, 2012 at 9:29pm*

**4th std**

how can we help survive tigers?
*Sunday, June 24, 2012 at 6:14am*

**Math**

what is (7.21-3.13)4th power divided by 0.6-0.4?
*Tuesday, May 22, 2012 at 9:44pm*

**4th grade math**

Kamala had5,026 grams of flour in a canister. She bought a 4,157 gram bag of flour. She poured some flour from the bag to the canister. As a result, the mass of the flour in the canister is now twice the mass of the flour in the bag. How much is in the bag now?
*Monday, May 14, 2012 at 10:03pm*

**logarithmic differentiation**

y= 4th root (x^2+1)/(x^2-1)
*Monday, May 14, 2012 at 4:15pm*

**Science 4th Grade**

Bats and dolphins both hear a ______ than humans do... a.smaller range of pitches b.smaller range of frequencies c.larger range of resonances d.larger range of pitches and frequencies
*Sunday, April 8, 2012 at 9:33pm*

**Math**

Name School Team Event 3: Logic and Reasoning (with calculators) 5th/6th grade Math Meet ‘08 For each number pattern, fill in the next five terms. (2 pts. each blank) ANSWER KEY 1st term 2nd term 3rd term 4th term 5th term 6th term 7th term 8th term 9th term 10th term 1) ...
*Friday, March 30, 2012 at 12:23pm*

**4th grade fractions**

come up with 1 fraction up to 99 that has 2 different prime numbers that can work. For example: 20/30 the prime numbers there are 2 and 5. 20 divided by 2. 30 divided by 2. then it would be 10/15. then you do 10 divided by 5. 15 divided by 5. then it would be 2/3.
*Tuesday, March 20, 2012 at 5:48pm*

**calculus**

5. If f (x)=(2x+1)^4 then the 4th derivative of f(x)=0 at x = 0 is..
*Sunday, February 12, 2012 at 11:19am*

**chemistry**

For each, give the total number of electrons, the number of valence electrons, and the number of the energy level that holds the valence electrons. Br-35 electrons--7 valence--4th level Kr-36 electrons--8 valence--4th level As-33 electrons--5 valence--4th level I-53 electrons...
*Sunday, February 5, 2012 at 1:20pm*

**4th grade math**

Jason and Jessica had an equal number of dollars.After Jessica gave $50 to Jason, he had 5 times as many dollars as her.Find the total number of dollars they had.
*Wednesday, January 18, 2012 at 6:01pm*

**6 th grade Math**

You can find the total number of different 4-digit numbers of choices for each digit (9) to the number of digits (4), or 9 to the 4th power. Based on this pattern, how many different 5-digit numbers could you make from the digits 1 through 8?
*Wednesday, December 14, 2011 at 9:01pm*

**SLOPE MATH**

The grade of a road is its slope given as a percent. for example, a road with a 6% grade has a slope 6/100. it rises 6 feet for every 100 feet of horizontal run. describe a 100% grade. Do you think you could drive up it?could you walk up it? Is it possible for a grade to be ...
*Tuesday, November 15, 2011 at 11:38am*

**math**

the grade of a road is its slope given as a percent. for example, a road with a 6% grade has a slope 6/100. it rises 6 feet for every 100 feet of horizontal run. describe a 100% grade. Do you think you could drive up it?could you walk up it? Is it possible for a grade to be ...
*Monday, November 14, 2011 at 1:33pm*

**4th grade Math**

Miguel would like to figure out how many blocks he would need to build the 25th dragon without actually building it. He knows that there is a pattern to his hexagon dragons. Can you write a rule in words or a math expression that Miguel can use to figure out the total number ...
*Tuesday, October 4, 2011 at 8:31pm*

**Math**

If you are getting a B in everything else in this class but you don't do any of the news item write ups(which are 9% of your grade, then will your final grade be a B? If not a B, then what will your final grade be?
*Friday, September 2, 2011 at 4:22am*

**4th grade math**

I'm a 4 digit number with no 2 digits the same. My ones digit is twice my thousands digit and 1 less than my tens digit. My hundreds digit is the difference between my tens digit and my thousands digit. My thousands digit is an odd number less than 6. What number am I?
*Tuesday, August 30, 2011 at 9:50pm*

**4th grade math**

suppose a bead maker wants to separate 10,000,000 beads into boxes. She will put 100,000 beads into each box. Into which box would she put the 4,358,216th bead?
*Monday, July 25, 2011 at 8:23pm*

**Math**

If Brittany has a 49.7% grade average then for her final exam that is worth 20% of the grade and she gets a 90% what would her final grade be?
*Tuesday, May 31, 2011 at 4:51pm*

**Pre algebra**

Kayla has a 41% grade average. On an exam that is worth 20% of her grade she gets a 100%. What is her grade now?
*Wednesday, May 25, 2011 at 8:07am*

**Math**

Kayla has a 41% grade average. Then sha takes an exam that is for 20% of her grade and gets an 100%. What is her grade now?
*Wednesday, May 25, 2011 at 8:02am*

**4th grade**

The 93 nature camp students ate lunch at the lodge. They sat at an even number of tables. There were 5 students at one table, and an equal number of students sitting at each of the other tables. How many students were sitting at each of the other tables? THE ANSWER IS 5 STUDENTS
*Thursday, April 7, 2011 at 4:42pm*

**4th grade**

trains begin to stop at terminal b every morning at 5 a.m. and then come every 20 minutes for the next 3 hours. mr success needs 15 minutes to get to terminal b from his house. .if mr. success leaves his house at 7:08 a.m., what is the earliest time he can get the train at ...
*Thursday, March 24, 2011 at 8:03pm*

**appling middle**

If the data were displayed in a circle graph, what percent of the graph would represent the seventh grade? Enrollment is Sixth grade 64, Seventh grade 64, and Eighth grade is 70
*Thursday, March 10, 2011 at 8:32pm*

**maths**

The probabilities of a student getting grade A, B, C and D are 0.2, 0.3, 0.15 and 0.35 respectively. Then the probability that the student gets 1) At least C grade is __________ 2) At most C grade is ___________
*Thursday, March 10, 2011 at 1:44am*

**4th grade fractions**

Ms. Ross's class has 23 students.2/3 of her students have brown hair. The rest have blond hair. How many students have brown hair?
*Wednesday, February 9, 2011 at 3:33pm*

**4th grade math**

of the third graders who were asked, 2/5 like pizza the best, 3/15 like hamburgers the best, and 18 like macaroni the best. How many third graders were asked their favorite food?
*Wednesday, January 26, 2011 at 10:04pm*

**math 4th grade**

i am a mixed decimal number the sum of my whole number is equal to the sum of my decimal number. my tenths is half of my hundredths and my ones is twice my tenths. if all my digit are even and my hundredths is 8 what number am i. pls. answer my question tnx
*Sunday, January 9, 2011 at 11:47pm*

**4th grade**

sylvester bowls once a week. this week he bowled four games. his scores were, 105 103 107 109 what is his average (mean) for the week? explain how you found your answer. what is the median score for the week? explain how you found your answer. what is the mode for his socres ...
*Thursday, January 6, 2011 at 7:57pm*

**4th**

what is an array
*Thursday, January 6, 2011 at 4:07pm*

**4th grade**

carol FRIEND ESMERALDA IS AWAY FOR 3 DAYS.SHE ASKED CARLO TO FEED HER PET DOG TWICE A DAY.CARLO FEED HIM ONE 8-OUNCE CAN EVERY TIME HE GOES ESMERALDA'S HOUSE. HOW MANY CANS OF FOOD DOES ESMERALDA NEED TO BUY FOR THE THREE DAY VACATION? SHOW HOW YOU CALCULATEAD YOUR ANSWER...
*Monday, January 3, 2011 at 8:33pm*

**4th grade**

Jorge and Hector like to play marbles.Jorge had 7 more than four times the number of marbles that Hector had. Together they had 37 marbles. How many marbles did Jorge have?
*Thursday, December 9, 2010 at 8:47pm*

**4th grade**

At a school fair, you can toss coins into cups to earn points. If you earn 100 points or more you win a prize. The cups are worth 15, 20, 25, and 30 points. If you get 4 tosses and can stop whenever you reach 100 points, what are all the possible combinations of cups that you ...
*Monday, December 6, 2010 at 3:37pm*

**Math**

If a grade was drawn at random from the data shown below, what is the probability that the grade is not a B? Grade Frequency A 2 B 8 C 11 D 2 F 1 I think it is 1 out of 5 or 4 but I am not sure? Please help :) Thank you much!
*Sunday, December 5, 2010 at 10:02am*

**Math**

At Smart Middle School students are required to take 7 classes each grading period. At the end of each grading period a student is assigned a final grade (A, B, C, D or F) for each class for the grading period. A student’s overall grade point average for the grading ...
*Monday, November 15, 2010 at 5:40pm*

**4th Grade - Science Fair Project**

Which brand of band-aid sticks best? How does Generic vs. Name brand differ in the way the band-aid sticks? Is one better than the other? Is there a site to help me with this Science Fair Project? Can't find one about Band-Aids????
*Tuesday, November 9, 2010 at 2:41pm*

**4th Grade - Science Fair Project**

Which brand of band-aid sticks best? How does Generic vs. Name brand differ in the way the band-aid sticks? Is one better than the other? Is there a site to help me with this Science Fair Project? Can't find one about Band-Aids????
*Tuesday, November 9, 2010 at 9:14am*

**comparing fractions**

at Morris Elementarhy there are 45 students in each grade, four though six. In the fourth grade, 19 participate in sports after school. Two out of every six fifth grade play sports after schoo;. In the sixth-grade class, seven of every ten students are not playing sports. ...
*Wednesday, November 3, 2010 at 12:11am*

**4th grade math**

write 1, 2, 3, 4, 5, 6, 7, 8 or 9 in each box. write a number sentence that has the greatest sum _,_ _ _ + _ _ _ write a number sentence that has the least sum _,_ _ _ + _ _ _
*Sunday, October 24, 2010 at 3:21pm*

**4th grade**

Marty has 6 more pogs than Jen. After he gives 10 pogs to Jen, how many more pogs will Jen have than Marty?
*Sunday, October 24, 2010 at 11:45am*

**4th grade**

Marty now has6 more pogs than jen has.After he gives 10 pogs to jen, how many more pogs will jen have then Marty?
*Wednesday, September 29, 2010 at 9:04pm*

**earth - website**

I would love my 4th grade students to explore a fun website about the earth and/ or other planets. Do you know any fun and interesting websites that my kids would enjoy exploring while learning about their planet earth.
*Saturday, September 25, 2010 at 11:29pm*

**4th grade**

i am a 5 digit number my tens digit is the sum of my hundreds digit and thousands digit. my tens digit is twice my ones digit.my hundreds digit is 1 more than zero.my thousands digit is seven times my hundreds digit.my ten thousands digit is the same as my ones digit.what is ...
*Monday, September 13, 2010 at 6:04pm*

**4th Grade Math**

Re: Factor Numbers My son has to write at least two ways to break down numbers - I know he did not learn this in school but I would like to help him at home, please help me I have not done this work in over 30 years. He has to break down the numbers 56, 12, 42, 36, 24 and 60. ...
*Wednesday, June 9, 2010 at 8:04pm*

**4th Grade Math**

Re: Factor Numbers My son has to write at least two ways to break down numbers - I know he did not learn this in school but I would like to help him at home, please help me I have not done this work in over 30 years. He has to break down the numbers 56, 12, 42, 36, 24 and 60. ...
*Wednesday, June 9, 2010 at 7:58pm*

**what can i compare middle school to?**

what can i compare middle school to? (use in metaphor), based on 6th, 7th, and 8th grade. for example playing monopoly 6th grade - buying properties, 7th grade- adjusting to the game, 8th grade - stress over money
*Sunday, May 16, 2010 at 6:34pm*

**4th grade**

Mr. Kimball has a swimming pool that measures 20 feet long by 15 feet wide. He is adding a walkway around the pool that is 3 feet wide all around. What will be the perimeter of the walkway?
*Monday, April 19, 2010 at 4:16pm*

**find my grade average**

-10% of my grade *82 -20% of my grade *100% *100% *100% *100% *100% *100% *100% *100% *82% -30% of my grade none -40% of my grade *76% reply as soon as possible. thank you!!!!
*Sunday, April 18, 2010 at 6:11pm*

**math 4th grade**

Leah liked to balance objects she found around the house using the science kits she got for Christmas. She found that 3 identical apples and a 5-gram weight exactly balanced with a 50-gram weight.Leah said she could tell how much each apple weighed by solving the equation 3a+5...
*Thursday, April 15, 2010 at 8:04pm*

**4th Grade Math**

Ms. Ross's class has 24 students.2/3 of her students have brown hair.The rest have blonde hair.How many students have blonde hair?
*Tuesday, March 23, 2010 at 7:24pm*

**Math 157-1**

Use the data in the grade-distribution Use the data in the grade-distribution table below to construct a circle graph showing the distribution of grade types in Ike’s class. Grade Frequency A 2 B 8 C 11 D 2 F 1 How would the graph change if there were twice as many of ...
*Friday, March 19, 2010 at 10:01am*

**4th grade**

Of the first graders who were asked,1/6 like math best,2/3 like reading best, and 12 like science best.How many first graders were asked their favorite subject?
*Wednesday, March 3, 2010 at 7:03pm*

**classroom instruction**

Search the Internet to locate and review your state’s educational standards for a grade level and subject that interests you, such as second-grade language arts or fifth-grade science. i need help finding information on the state of wisconsin and 1st grade P.E.
*Thursday, February 18, 2010 at 10:37pm*

**4th grade math**

Judy and Ramey together have 42 stuffed animals. Judy has 12 fewer animals than Ramey. How many stuffed animals does each girl have? I know that the answer is Ramey has 27 and Judy has 12 but I don't know how to write the equation for solving it. I figured out the answer ...
*Wednesday, February 17, 2010 at 7:31pm*

**4th grade**

box A has 3 red marbels, and 2 yellow marbels. box B has 2 red marbels and 1 yellow marbel Which box has a greater chance of picking a red marbel from it?
*Sunday, February 14, 2010 at 9:29pm*

**math 4th grade**

To win $1 million, you must draw two cards whose sum is nine, from a stack of cards numbered 1 through 10. After the first draw, you replace the card and shuffle the stack again for the second draw. What is the chance that your two cards will have a sum of nine?
*Sunday, February 7, 2010 at 10:28pm*

**4th grade math**

Juanita has 35 pre-addressed post cards she plans to hand out to her friends so they will write to her while she is away visiting her grandmother. She has 7 friends she'd like to give them to. Write a number sentence to show how Juanita can share her cards equally among ...
*Sunday, February 7, 2010 at 10:24pm*

**AIG 4th Grade Math**

Nellie's soccer team is having a great season. The team is being coached by Nellie's mom, who divided the team into five groups: 1/2 the players are forwards, 1/6 are wings, 1/6 are halfbacks, 1/12 are fullbacks, and 2 others are goalies. How many players are on Nellie...
*Tuesday, January 19, 2010 at 8:56pm*

**4th grade**

Write the possessive pronouns that could replace each group of words below. Before a noun Not before a noun 1.Martha Katz's _________ _________ 2. the townspeople's ________ ___________ 3. belonging to me _________ ____________ 4. Pablo's ____________ ___________ 5...
*Wednesday, January 13, 2010 at 7:47pm*

**4th grade**

What is the difference between past tense and past participle? what is used when? for example past tense: I walked to the Cafe. past participle: I had walked to the cafe.
*Thursday, January 7, 2010 at 6:17pm*

**4th grade**

The 93 nature camp students ate lunch at the lodge. They sat at an even number of tables. There were 5 students sitting at one table, and an equal number of students sitting at each of the other tables. How many students were sitting at each of the other tables?
*Monday, November 30, 2009 at 11:42pm*

**4th grade**

At one table, some of the students shared 3 pizzas. Each pizza was cut into 8 slices. After the students shared the pizza equally, there were 3 slices left over. How many students shared the pizza? How many slices of pizza did each student eat?
*Monday, November 30, 2009 at 11:39pm*

**4th grade math**

The first question states that Jeff runs 25 miles a week. He wants to run more than 25 miles. If Jeff runs 3 more miles each week, how many miles will he be running 6 weeks from now?
*Monday, November 23, 2009 at 7:09pm*

**4th grade**

IN A TUG OF WAR, 5 DONKEYS ARE EXACTLY EQUAL TO 2 ELEPHANTS. IN ANOTHER TUG OF WAR, 3 ELEPHANTS ARE EQUAL TO 1 CAR. WHICH TEAM SHOULD WIN IF A CAR AND 3 DONKEYS ARE MATCHED AGAINST 4 ELEPHANTS?
*Saturday, November 14, 2009 at 12:07am*

**4th grade**

math worksheet named Calculating Codes we are to fill in the correct signs (+ - X etc..) looks like we can't rearragne or create an order of operations other than the order of the signs. the example is 1 2-3+4 5 = 54 1 2 3 4 5 = 60 only need two signs + and + 1 2 3 4 5 = ...
*Thursday, November 12, 2009 at 6:52pm*

**Math**

Use the data in the grade-distribution table below to construct a circle graph showing the distribution of grade types in Ike’s class. Grade..Frequency A......2 B......8 C......11 D......2 F......1 How would the graph in Exercise 7 change if there were twice as many of ...
*Sunday, November 1, 2009 at 4:34pm*

**Math**

Use the data in the grade-distribution table below to construct a circle graph showing the distribution of grade types in Ike’s class. Grade..Frequency A......2 B......8 C......11 D......2 F......1 How would the graph in Exercise 7 change if there were twice as many of ...
*Tuesday, October 27, 2009 at 10:52am*

**4th**

What is the definition for the word multiplied?
*Monday, October 19, 2009 at 3:58pm*

**4th grade**

Go on a big number hunt.Find at least one number greater than 100,000.Findat least one number greater than a 1,000,000.Hint:look in a on-line .Record the number below and write at least 2 sentences to describe what each one is about? That's all the information I have.......
*Wednesday, September 16, 2009 at 9:57pm*

**4th grade**

find at least one number greater than100,000?find at least one number greater than 1,000,000
*Wednesday, September 16, 2009 at 9:43pm*

**4th grade math**

thirty six buses would be needed to carry the passengers and crew off three 747 jumbo gets. heres the question: how many buses fo one jet two jets. and how many jets for 180 buses and 252 buses and how many jets would be needed to carry the passengers on 264 buses
*Tuesday, August 25, 2009 at 9:29pm*

**4th grade**

Bobby has only pennies, dimes, and quarters. One half of Bobby's coins are pennies. One fourth of his coins are quarters. Three of his coins are dimes. How many coins does Bobby have? please help me figure this one out?
*Wednesday, April 8, 2009 at 5:57pm*

**4th Grade Math Correction**

PLEASE HELP.I am sorry. I posted the question wrong earlier this evening. Instead of 300 it should have read: 3000 exercise books are arranged into 3 piles. The first pile has 10 more number of books than the second pile. The number of books in the second pile is twice the ...
*Thursday, January 8, 2009 at 11:11pm*

**4th Grade Math**

300 exercise books are arranged into 3 piles. The first pile has 10 more books than the second pile. The number of books in the second pile is twice the number of books in the third pile. How many books are there in the third pile?
*Thursday, January 8, 2009 at 9:31pm*

**4th grade**

A MAN HAS 6 HOUSES. INEACH HOUSE HE KEEPS 6 CATS. EACH CAT HAS 6 WHISKERS. AND ON EACH WHISKER SIT 6 FLEAS. A. HOW MANY CATS ARE THERE? B. HOWMANY WHISKERS ARE THERE ON ALL THE CATS? C.HOW MANY FLEAS SIT ON ALL THE CATS' WHISKERS? D. ANSWER THE LAST LINE OF THE PUZZLE:&...
*Thursday, January 8, 2009 at 5:22pm*

**3rd grade**

There are 33 students in the band. There are 6 more fifth-grade students than third-grade students. There are an equal number of third- and fourth-grade students. How many third-grade students are in the band?
*Wednesday, October 8, 2008 at 12:58am*

**english**

I need you to grade my paper for me . I dont have a car and I don't know the area well enough to ask anyone to grade it for me I just want you to grade it for me. and leave the red marks on it for me so I can correct it my self and send it back to me through email. If it&#...
*Friday, October 3, 2008 at 4:54am*

**English Expression**

What grade/year are you in? I'm in the first grade in middle school. I'm a first grader in middle school. I'm in the 7th grade. I'm a 7th grader. ----------------------- Are the answers all acceptable? Which one is commonly used? Can we use both 'grade'...
*Friday, April 18, 2008 at 12:25pm*

**Elementary lesson (sorry)**

I am doing a practice unit plan for a 4th grade class about the importance of water. The first lesson plan in the unit should focus on a comprehension skill activity that involves writing. I went to the library and i choose the book "The Drop in my Drink" by Hooper ...
*Tuesday, March 18, 2008 at 10:36pm*

**working with data**

josephs final averages in science class are shown in the table below. homework % toward final grade-20% average-93 quizzes % toward final grade-20% average-92 tests % toward final grade-40% average-85 final exam % toward final grade-20% average-? what is the minimum score ...
*Sunday, February 24, 2008 at 4:45pm*

**Algebra II**

The problem states: Saturn is approximately 1.4x 10 to the 9th power kilometers from the Sun. If light travels at approx. 3.0 x 10 to the 5th power kilometers per second, how long does it take light from the Sun to reach Saturn? Express your answer in scientific notation. The ...
*Sunday, February 3, 2008 at 10:54am*

**english**

when writing the word GRADE ONE in a sentence...would it be Grade One (where there both capital) Grade one (where only grade is capital) or grade one (where none are capital)
*Sunday, January 13, 2008 at 5:19pm*

**math**

4th grade math homework. rounding sums and differences. paper say "round each number to its highest place. then estimate the sum or difference." example says 92 +28= then says round to 90 and 30 to make 120. further down numbers get larger 12646 + 9103= do i round to...
*Sunday, September 23, 2007 at 4:09pm*

**organic chemistry**

I need to draw the structure of 4-Hexenal. I understand that "hex" means it is a 6 carbon chain and the 4 tells me the aldehyde group ("al")is off the 4th carbon. My problem is how to draw the parent chain. I tried it with 6 carbons in a straight line then ...
*Thursday, September 13, 2007 at 2:20pm*

**physics-energy conservation**

some people refer to heat as "low grade energy. a)how is low grade energy different from high grade energy? b)give two example of high grade energy When heating a cup of tea, which would be preferable...a stove with a burner on top, or a heating pad? High grade energy is ...
*Tuesday, May 8, 2007 at 4:41am*

**science**

about how many diffrent rocks are there Directly from the site I gave you: "The three classes of rocks: the igneous, the sedimentary and the metamorphic — are subdivided into many groups. There are, however, no hard and fast boundaries between allied rocks. By ...
*Saturday, April 7, 2007 at 12:36am*

**math 4th grade**

If Sally gave a survey with five colors listed and ask each person who takes the survey to pick one color. She assumes that the results if given to 24 persons the results would be 1/2 blue, 1/12 red, 1/8 blue, 1/4 green, and 1/24 orange. What number of surveys would best prove...
*Thursday, January 25, 2007 at 8:09pm*

**math / linear programming**

Two factories manufacture 3 different grades of paper. The company that owns the factories has contracts to supply at least 16 tons of low grade, 5 tons of medium grade, and at least 20 tons of high grade paper. It costs $1000 per day to operate the first factory and $2000 per...
*Tuesday, January 2, 2007 at 6:44pm*

**math-I just want this check because it will be gra**

Are these the correct answers and lables? 9. A hand lens increased the thickness of a line 10 to the 3rd power times.The line was 0.5 mm thick. How thick did the line appear? my ans.- 500 mm thick 10. A truck holds 10 to the 4th power times more pounds than when it is empty. ...
*Thursday, December 7, 2006 at 5:03pm*

**math 4th grade**

what is 8 to the 5 power? i know its hard. but you dont have to answer it. thanks a lot! 32768 85 means 8*8*8*8*8 = >>? I assume you can do this on a calculator. Did you know the there is a web site that can do this for you. Go to www.google.com (if you have permission ...
*Wednesday, November 15, 2006 at 7:06pm*

**math 4th grade question**

Rodney is 3 times as old as his sister.A year ago, he was 4 times as old. How oldare Rodney and his sister now? How do you fiqure this out? Rodney = 3*sister Rodney-1 = 4*(sister -1) solve that out. Have you figured out the answer to this yet because we have the same question.
*Sunday, November 5, 2006 at 5:49pm*

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