Friday
April 18, 2014

Homework Help: 1st Grade

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1st grade/english
Four: Declarative sentences tell you something. Interrogative asks a question. Exclamatory shows a strong feeling. Imperative tells someone to do something. (From the link bobpursley gave, thanks bob. Just summing it up for our first grader.)
Wednesday, May 26, 2010 at 11:27pm

7TH GRADE
Several students in class were asked to reach into a bag and pull out cubes. the number of cubes each person grabbed. what are 1st and 3rd quartiles of this data
Monday, May 3, 2010 at 5:52pm

1st grade
Sam sees a figure The figure has one face The figure is curved What figure(shape) does Sam see?
Monday, April 26, 2010 at 11:15pm

6th grade science (physics)
explain and describe Newton's 1st law and as it applies to forces, balanced forces and unbalanced forces
Sunday, April 18, 2010 at 12:28pm

6th grade science (physics)
explain Newton's 1st law in relation to forces, balanced forces and unbalanced forces
Sunday, April 18, 2010 at 12:24pm

English
Hello! On Wednesday I am teaching English as a foreign language - 1st grade of high school) The topic: animal proverbs (I need to teach them these 18 animal proverbs) There are 8 learners in the class. I have 18 pictures of these proverbs and of course written explanations. ...
Friday, April 16, 2010 at 12:31pm

1st grade math
ms. sue is rite but do u want to know different ways like five nickles or two dimes and one nickle or twenty-five pennys or evan four nickles and five pennys?
Monday, April 12, 2010 at 5:22pm

1st grade
5 nickels 2dimes, one nickel a quarter 25 pennies three nickels, one dime.
Thursday, April 8, 2010 at 5:41pm

1st grade math
25 cents 25 (with the cent sign -- a c with a line through it) $0.25 a quarter 25/100
Thursday, April 8, 2010 at 5:01pm

1st grade
if yo have three words friend, things & might which word has the long i sound and which word can you get by adding a sound to in? a tin,b hid c find
Monday, March 29, 2010 at 7:58pm

1st grade
Hello there, A map can help you by showing you the exact location of something. By having road names, rivers, mountians and more! I hope this helped! -Kelly
Wednesday, January 27, 2010 at 4:20pm

1st grade english
A simple sentence needs a subject and a verb. In your sentence "tidy" will be an adjective, so you need a noun it will describe. I have a tidy desk. (I have put everything away. My desk is neat, in other words.) Sra
Tuesday, January 26, 2010 at 7:50pm

1st grade math
If you are doing it for addition/subtraction it could be: 6 + ? = 9 ? + 6 = 9 9 - 6 = ? 9 - ? = 6 4 + ? = 9 ? + 4 = 9 9 - 4 = ? 9 - ? = 4 For multiplication/division, it could be: 4 * 9 = 36 9 * 4 = 36 36/4 = 9 36/9 = 4 I hope this helps. 6 * 6 = 36 36/6 = 6
Wednesday, January 20, 2010 at 12:48pm

Math 157
Based on meteorological records, the probability it will snow in a certain town on January 1st is 0.480. Find the probability that in a given year it will not snow on January 1st in that town? Is the answer 0.520 ?
Sunday, January 17, 2010 at 6:50pm

12th grade English
Ok, i suggest making an outline for this. Outline I. Introduction II. Body Paragraphs A. 1st B. 2nd C. 3rd III. Conclusion Decide how you want to do your body paragraphs by putting examples of characters and their actions
Saturday, December 26, 2009 at 3:39pm

NOT 1st grade
Please don't try to fool us into simply giving you the answers. We don't appreciate lying or misinformation in this forum. We'll be glad to comment on YOUR answers.
Tuesday, December 15, 2009 at 5:51pm

math 6 grade
It's multiplying by four each time. So.. 1st Month: 2 2nd Month: 8 3rd Month: 32 4th Month: 128 5th Month: 512 6th Month: 2048
Wednesday, December 9, 2009 at 6:30pm

1st grade
Let me share with you with. For 1st grader, Dr. Suess story books are really good. Take one book from school or public library or you can buy one. You need to first get the child with you for reading. You may do that by giving him or her favorite things like toys or chocolates...
Saturday, November 21, 2009 at 8:41am

1st grade
Most maps have a small corner with places listed, and locations on the Map given, as in A5. You look on the map edges, A will be on one side, then on another side 5. You look where they cross, area A5.
Tuesday, November 10, 2009 at 5:30pm

7th grade
WITH A(0,2),B(6,2)AND C(4,4) APPLY THE RULE (1.5X,1.5Y) TO THE VERTICLES OF TRIANGLE ABC TO GET TRIANGLE PQR. COMPARE THE CORRESPONDING MEASUREMENTS(SIDE LENGHTS,PERIMETER,AREA, AND ANGLE MEASURES) OF THE TWO TRIANGLES? THIS IS THE 1ST QUESTION OF 5 I HAVE TO DO, AND I DON'...
Thursday, October 22, 2009 at 7:54am

1st grade
No it is divided cry.One way to count syllables is toho;d your hand under your chin. Everytime your chin goes down is a syllable.
Wednesday, October 21, 2009 at 11:57pm

math
In each case, consider what you know about the distribution and then explain why you would expect it to be or not to be normally distributed. a. The lifetimes of a set of batteries manufactured by a company in your town. b. The list of guesses of the number of marbles in a ...
Tuesday, September 29, 2009 at 10:37pm

1st grade Reading
Read to her and with her. Show that you enjoy reading and help her to enjoy it. Praise accurate reading responses. However, if there is a specific problem, you might seek professional help. Start at the school. I hope this helps. Thanks for asking.
Friday, September 25, 2009 at 11:35am

11th grade
if a container starts with 60 liters and the 1st hour it has half the liters and the 2nd hour it has 1/3, how long before there are 10 liters?
Thursday, September 24, 2009 at 6:37pm

3rd grade
grade 1 215 grade 2 186 grade 3 259 how many more were sold bt grade 3 than by grade 2? 73 answer why aren't any of the tens regrouped to subtract the ones?
Monday, September 14, 2009 at 4:11pm

1st grade
Who will clean the room? You or your mom? If your mom will clean the room, then the sentences are correct. If you are to clean the room, then the second sentence needs to be phrased/punctuated differently.
Tuesday, June 16, 2009 at 10:35pm

1st grade
Yes, it is. One correction -- Mr. Olson's fence. You need the apostrophe there because Mr. Olson owns the fence.
Tuesday, June 16, 2009 at 9:32pm

1st grade
The first is called a run-on because it's really two sentences that are run together. This is correct: I can't play now. Can you come back later? The second sentence is fine, but put the period before the ending quotation marks, not after them.
Monday, June 15, 2009 at 6:48pm

1st grade
If you are looking for correct punctuation, this will help. Put what is being said into quotation marks. Put a question mark after the question. "What is your name?" asked Anita.
Sunday, June 7, 2009 at 4:10pm

1st grade
Did the boys swim in the lake? or Did those boys swim in the lake? is that correct
Monday, May 18, 2009 at 8:24pm

1st grade
is this a sentence the dog rolled in a mud puddle the dog is rolling in a mud puddle
Tuesday, April 21, 2009 at 9:44pm

math 1st grade can you check the answers
can you check this set of answer {10,14,18,22,26} mean=18 median=18 mode =no mode
Tuesday, March 24, 2009 at 6:04pm

1st grade math
can you check this set of answer as well{10,14,18,22,26} mean=18 median=18 mode =no mode
Tuesday, March 24, 2009 at 5:58pm

1st grade
Remember that a vertex can be the point opposite the base. So what is a triangular pyramid (4 sides) which is sitting on its point? 4 sides, 3 vertexes
Friday, March 13, 2009 at 9:01pm

Math, definitely not "1st grade"
assistance needed Please type your subject in the School Subject box. Any other words are likely to delay responses from a teacher who knows that subject well.
Friday, March 13, 2009 at 8:33pm

1st grade
|||| .. is correct. the | is used as a ten. the . is used as a one. They are base ten. Blocks are used for this at school. They are also called longs (|) and shorts (.).
Tuesday, February 24, 2009 at 8:16pm

1st grade social studies
white oak tag? An overly presumptuous name for poster board. Good poster board is make of oak chips (hardwood). White refers to the bleaching process on the wood fibers.
Monday, February 16, 2009 at 9:13am

1st grade social studies
the revolutionary war,my son has a project due on 2/23/09 about the revolutionary war.what are white oak tags,how do i go about doing this project.
Monday, February 16, 2009 at 8:50am

1st grade
What are you talking about i am an 8th grader and i don't know what the heck you are talking about and i am in honers.
Thursday, December 4, 2008 at 12:02am

1st grade
Places and shelters: houses tents apartments stores churches schools hospitals libraries Transportation: cars buses trains ships bikes motorcycles trucks planes helicopters horses
Monday, December 1, 2008 at 5:04pm

AED
Choose a grade level and a scientific concept appropriate for that level. • Plan a science experiment to explore this concept. In your paper, address the following points: o List the equipment and materials to be included in the science kit. o Explain what safety ...
Saturday, November 22, 2008 at 5:53pm

1st grade
(homonyms are different from homophones in that homonyms have the same spelling, whereas homophones do not)
Monday, November 17, 2008 at 7:30pm

3rd grade 1st year spanish
y = and ya = already, yet yanqui = Yankee yogurt = yogurt k karate = karate kilogramo = kilogram kilómetro = kilometer Sra
Sunday, November 16, 2008 at 11:12pm

Math assistance needed
Assistance needed; this is definitely not 1st grade!
Tuesday, October 28, 2008 at 8:34pm

4th grade
L0L!!! U LIL GURL IL TEACH U 3XAMPLE: x 4 4/16 <---1ST H0W MANY - - - TIMEZ DUZ 4 16 - 16 G0E IN2 6? ------- 0 G0T ET? L0L IM IN DHA 5TH GRADE... ITZ PRETTY C00L 2 B TALKIN 2 A 4TH GRADA WEL NEWAYZ WEHN U DO AREA N PERIMETER REMEMBER: A=(LxW)A ND P=(L+W) 0K LIL GURL L0LZ
Thursday, October 16, 2008 at 9:36pm

Math
1st plane flew at 600km/h 15 minutes later..... 2nd plane flew at 700km/h how long did it take the 2nd plane to overtake the 1st plane? for my answre, I got 1.75h Is this correct? The book said it was 1.5 Thanks
Tuesday, September 30, 2008 at 11:00pm

math 7th grade
what is the change in temp when the thermometer reading moves from the 1st temp to the 2nd temp. 20degree F to -10 degress F.Please explain to me how you get the answer for future problems.
Monday, September 22, 2008 at 8:50pm

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 at 9:47pm

School Holcaust Unit
Okay, i know that this is a sad subject, but i'm getting confused. Was the Nurember Law written on August 20th, or September 1st 1935? Or did the meeting start on August 20th 1935 and ended September 1st 1935?? Any help would be nice...thanks.
Tuesday, January 29, 2008 at 7:49pm

1ST GRADE GRAMMER
meaning (one of 2 main parts of a sentence the other being the subject) PREDICATE/ tells somthing about the subject example (giving the apple to the horse) is your Predicate. another example of Predicate in brackets Judy (ran with her dog)
Tuesday, January 15, 2008 at 6:51pm

Can someone check my answer please
Can someone check this for me? Suppose that the number of cars, C, on 1st Avenue in a city over a period of time t, in months, is graphed on a rectangular coordinate system where time is on the horizontal axis. Suppose that the number of cars driven on 1st Avenue can be ...
Saturday, December 15, 2007 at 8:32pm

SCI 275
ok thank you. I had the 1st two not the last one. With the 1st two i am having a hard time finding info. and using it on what I need.I will check out the last one.
Saturday, November 10, 2007 at 7:12pm

1st grade homework question
can the earths minerals be all used up or do they regrow?? That question has been answered just a few posts below. If you can't find it, please repost.
Monday, December 11, 2006 at 7:16pm

Proofread -- English
Yes, that is correct. I am currently taking BUS and CJ courses, but on the 1st of January, my focus will be entirely to CJ. Can someone proofread this sentence for me? I'm not sure I understand the question. If the sentence is to be proofed, I don't know what I am ...
Tuesday, September 12, 2006 at 5:34pm

SAT math
There are 6 open seats. _ _ _ _ _ _ The first and last seat are taken by the two parents. -For the 1st seat, either parent can sit on the 1st seat -> 2 ways -Therefore, the last seat, the remaining parent sits on the last seat. -> 1 way The 4 middle seats are seated by ...
Saturday, April 5, 2014 at 11:34pm

MATH
so 1/4 in fourth and 1/4 in fifth grade 1 = 2/5 * 400 = 2 * 80 = 160 grade 2 = 2/8 * 400 = 2 * 50 = 100 grade 3 = 1/10 *400 = 1 * 40 = 40 grade 4 = 1/8 * 400 = 1 * 50 = 100 grade 5 = 1/8 * 400 = 1 * 50 = 100 grade 2 is 2/8 which is 1/4 by the way, sme as grades 4 and 5
Monday, March 24, 2014 at 3:23pm

MATH
there are 400 students at smith Elementary school 1/4 of the students are in fourth and fifth grade, 1/10 of the students are in grade 3, 2/8 are in second grade and 2/5 are in first grade . How many kids are in each grade? (4th and 5th have an equal amount)
Monday, March 24, 2014 at 3:14pm

Math - PreCalc (12th Grade)
spread = 5-2 = 3 if cut into n pieces, each base = 3/n endpoint of 1st rectangle = 2 + 3/n endpoint of 2nd rectangle = 2 + 2(3/n) ... endpoint of kth rectangle = 2 + k(3/n) = 2 + 3k/n f(2+3k/n) = 2(2 + 3k/n) + 1 = 5 +6k/2 I see you have two other questions above that follow ...
Friday, March 21, 2014 at 11:40am

technology
Need help on the question below. I have read all about all 3 laws but still don't understand if this would be 1st or 2nd law. "A ball is rolling in a straight line on a hardwood floor. A cat hits it from the right, so the ball rolls left. Which Law of Motion is this? ...
Friday, March 14, 2014 at 6:58pm

Math
cost of 1st machine = 250000 + 30000( 1 - 1.085^-10)/.085 - 75000(1.085)^-10 = 413,669.04 cost of 2nd machine = 400000 + 225000(1.085)^-5 - 175000(1.085)^-10 = 472,235.27 1st is cheaper, I used the present time as my "focal point in time" check my arithmetic
Friday, March 14, 2014 at 10:50am

math(QUESTION)
Suzan has a 69 as her grade in a class. If she does a quiz worth 9% of her grade what will her grade be?
Friday, March 7, 2014 at 11:13am

Physics- Newton's 1st and 2nd Law

Monday, February 24, 2014 at 10:21am

Math
and the 1st one.
Wednesday, February 19, 2014 at 3:45pm

math
In 2008 (Leap year) KIT Hospital had 150 licensed beds for adults and children from January 1st through June 30th. From July 1st through December 31, licensed beds increased to 175. During the first half of the year there were 23114 inpatient service days. During the second ...
Monday, December 16, 2013 at 5:46am

Math plz help
In the town of Mayfield, the precipitation totals are set to zero at the beginning of each year. Because of a drought early in the year, the totals on March 31st were below normal at -27 inches. The next three months were very rainy, and by July 1st the precipitation totals ...
Sunday, December 15, 2013 at 7:17pm

Math - Linear Algebra
1st one times 2 2x - 8y - 6z = -36 2nd -2x + 8y + 7z= 41 add them z = 5 sub into 1st x - 4y - 15 = -18 x - 4y = -3 x = 4y - 3 let y = 0 , x = -3, z = 5 ---> point (0,-3,5) let y = 2 , x = 5, z = 5 ---> point (2,5,5) so direction of line of intersection is (2, 8, 0) using...
Sunday, December 8, 2013 at 7:54pm

Calculus
at t=0, let the 1st boat be at (0,0) The 2nd boat is at (-c,c) So, at time t, the 1st boat is at (0,6t) and the 2nd boat is at (-c+5t,c) The distance is thus d^2 = (-c+5t)^2 + (c-6t)^2 = c^2 - 10ct + 25t^2 + c^2 - 12ct + 36t^2 = 2c^2 - 22ct + 51t^2 2d dd/dt = -22c + 102t dd/dt...
Tuesday, December 3, 2013 at 8:45pm

5th grade math
In the fourth grade class at Baker Elementary, 9 students are left-handed. The fifth grade has 7 left-handed students and the sixth grade has 6. The number of students in the fourth grade is 3 times the number of left-handed students in the class. The sixth grade has 3 more ...
Sunday, December 1, 2013 at 8:35pm

Math
Had that first equation not mysteriously changed we would have; 1st times 3 ---> 12x - 9y = 15 2nd times 4 ---> 12 - 20y = 28 subtract: 11y = -13 y = -13/11 into 1st: 4x -3(-13/11) = 5 4x = 5 - 39/11 = 16/11 x = 4/11
Wednesday, November 27, 2013 at 10:05pm

math
charge for first 25 songs --- x dollars per song charge for songs over 25 ---- y dollars per song 25x + 3y = 34.8 25x + 5y = 40.7 subtract the 1st from the 2nd 2y = 5.9 y = $2.95 sub into the 1st 25x + 3(2.95) = 34.8 25x = 25.95 x = $1.04
Tuesday, November 12, 2013 at 10:32pm

Math
prob of getting one black from 1st box = 3/4 prob of getting one black from 2nd box = 6/8 = 3/4 mmmmmhhhh? prob(2 blacks from 1st) = (3/4)(2/3) = 1/2 prob(2 blacks from 2nd) = (6/8)(5/7) = 15/28 mmmh again!
Tuesday, November 12, 2013 at 11:27am

Personal Finance
On December 1, 2004 a $1,000.00 bond, paying 6% interest on January 1st and July 1st of each year is purchased for $950.00. The bond is sold on December 5, 2005 for $980.00. What would be the total monetary return including both interest and capital gains from holding this ...
Sunday, November 10, 2013 at 6:06pm

Physics
did you get the 1st one.. plzz help anyone? plz
Tuesday, October 15, 2013 at 3:19pm

english
1st time
Sunday, October 13, 2013 at 8:35pm

Grammar Advisor
I just cannot figure out if these answers are correct or not. Can you please help me? 78. If the sound system hadn’t failed, last night’s show would have been better. This is a correct sentence using the 1st conditional form. x This is a correct sentence using the ...
Wednesday, September 25, 2013 at 10:13pm

dma 040
42 inch cut into 3 pieces. Piece 2 is twice as long as 1st and 3rd piece. Piece 3 is three times as long as piece 1. How long are the pieces 1st board 2nd board 3rd board
Sunday, September 15, 2013 at 1:11am

Maths
#1,2 ok #3. 1st two only
Thursday, August 29, 2013 at 6:24pm

Physics !!
1a. d1 = 0.5g*t^2 = 4.9*2^2 = 19.6 m. = Distance fallen by the 1st stone after 2 s. V1^2 = Vo1^2 + 2g*d V1^2 = 0 + 19.6*19.6 = 384.16 V1 = 19.6 m/s = Velocity of 1st stone after 2 s. d1 = d2-19.6 m. Vo1*t + 0.5g*t^2 = Vo2*t+0.5t^2-19.6 Vo1*t-Vo2*t+4.9t^2-4.9t^2 = -19.6 19.6t-...
Monday, August 26, 2013 at 8:56pm

Math
strange question Are you saying his annual payment is $2500 + the interest? If so, then ... Balance now = $50,000 interest at end of 1st year = $7000 payment = 2500 + 7000 = $9500 Balance at end of 1st year = $47,500 interest at end of 2nd year = $6,650 payment at end of 2nd ...
Thursday, August 8, 2013 at 10:19am

Math
1st times 4 --> 12x + 16y = 72 2nd as is ----> 12x + 7y = 4 subtract them: 9y = 68 y = 68/9 back in 1st: 3x + 4(68/9) = 18 3x = 18 - 272/9 = -110/9 x = -110/27
Thursday, August 8, 2013 at 8:04am

BTech, Mechanical
For the 1st ball, the time of the upward motion v=v₀-gt v=0 0=v₀-gt t= v₀/g =18/9.8=1.83 s. The height of the 1st ball h= v₀t-gt²/2=18•1.83 - 9.8•(1.83)²/2= =16.53 m The time of the 1st ball downward motion before the 2nd ball begins...
Monday, July 22, 2013 at 1:44pm

Psychology
My answer was correct the 1st time it was A . it is not C
Monday, June 24, 2013 at 1:17pm

conditional sentence
1. If the sound system hadn't failed,last night's show would have been better a. this is a correct sentence using the 1st conditional form b. this is correct sentence using the 2nd conditional form C. this is a correct sentence using the 3rd conditional form answer A 2...
Wednesday, June 12, 2013 at 6:04am

English Pls Ms. Sue help me by checking my work
20. Original: There are ten women and 4 men in my chemistry class. Correct before: There are 10 women and 4 men in my Chemistry class. Correct now: There are ten women and four men in my Chemistry class. 15. Original: Senator Barbara Mikulski, Democrat Maryland, has a six-year...
Monday, June 10, 2013 at 12:06pm

Physics
1st) c) 1.5*V d) t=-ln(0.25)*2*R*C
Saturday, May 25, 2013 at 5:42am

Physics
Do you know 1st c) and d) ?? And 3rd problem??
Saturday, May 25, 2013 at 4:59am

Physics
And can anyone tell me the answer of 1st (g)??
Sunday, May 12, 2013 at 11:38pm

Quantum Physics
1st is part c): -z-h- -x-h-
Tuesday, April 16, 2013 at 3:30pm

algebra
I believe it was a sum of -30 no big deal .... 1st integer x-2 2nd integer x 3rd integer x+2 x-2 + x + x+2 = -30 3x = -30 x = -10 1st is -12 2nd is -10 3rd is -8
Thursday, April 11, 2013 at 8:13am

Statistics
FOR THE 1ST THE ANSWER IS 154.1
Thursday, March 28, 2013 at 2:48pm

statistics
The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of the scores, a “B” grade to the...
Sunday, March 24, 2013 at 5:22pm

psychology
2. Is absolutely Bipolar in the manic phase. I have 1st hand knowledge of this! 3.paranoid schizophrenia 4.This one almost seems like Conduct Disorder 5.definitely panic attack... again 1st hand knowledge 6.possible OCD and insomnia 7.schizophrenia accompanied w/delusions 8....
Saturday, March 23, 2013 at 9:06am

Math
speed for first leg --- x mph speed for 2nd leg ---- x+10 mph time for 1st leg = 150/x time for 2nd leg = 183/(x+10) 183/(x+10) - 150/x = 3/60 = 1/20 times 20x(x+10) 3660x - 3000(x+10) = x(x+10) 3660x - 3000x - 30000 = x^2 + 10x x^2 - 650x + 30000 = 0 (x-600)(x - 50) = 0 x = ...
Thursday, February 28, 2013 at 10:28pm

math
BAD is correct. It is 84. If you would like to use algebra, do the following: x:= Unit Digit Number y:= Tens Digit Number The units digit is 4 less than the tens digit number so We know that x=y-4 The tens digit is twice the units digit so we know that y=2x Now we can take the...
Monday, February 18, 2013 at 3:02am

MATH HELP!
homeroom is after 1st period.....
Saturday, February 16, 2013 at 9:50am

chemistry
newton 1st law of motion
Wednesday, February 6, 2013 at 2:19am

Algebra
x 1st + even integer x+2 2nd + even integer x^2+(x+2)^2= 164 x^2+x^2+4x+4-164=0 1/2(2x^2+4x-160=0) x^2+2x-80=0 (x+10)(x-8)=0 x=-10 & x=8, disregard -10 since we are looking for positive integers... so, x=8 (1st even) x+2= 10 (2nd even)
Monday, February 4, 2013 at 5:31am

Math
So the 1st derivative has 5 solutions, indicating that the 1st derivative must have been a 5th degree, making the original function sixth degree function It must have had some double roots, that is , touching the x-axis without crossing over gives us 2 equal roots.
Sunday, January 27, 2013 at 9:32am

Pre-Calculus
from the 1st ---> 4x-9 = y sub that into the 2nd 2x + 3(4x-9) = 12 2x + 12x - 27 = 12 14x = 39 x = 39/14 y = 4(39/14) - 9 = 15/7 check: 1st: LS = 4(39/14) - 15/7 = 156/14 - 30/14 = 126/14 = 9 = RS 2nd: LS = 2(39/14) + 3(15/7) = 39/7+ 45/7 = 84/7 = 12 = RS
Tuesday, January 22, 2013 at 9:56pm

Math
time for 1st flight = 4800/x time for return flight = 4800/(x-200) 4800/(x-200) - 4800/x = 2 multiply by x(x-200) 4800x - 4800(x-200) = 2x(x-200) 960000 = 2x^2 - 400x x^2 - 200x - 480000=0 (x - 800)(x + 600) = 0 x = 800 or x = -600 , the negative speed makes no sense so x = ...
Sunday, January 20, 2013 at 8:40am

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