Sunday

April 20, 2014

April 20, 2014

Post a New Question | Current Questions

**MATH HELP!**

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

**math**

thanks,so what is the formula for the sum of 1st even number ?
*Monday, February 11, 2013 at 5:33pm*

**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*

**math**

one way: 3a+2p = 51 2a+3p = 46.50 add them up: 5a+5p = 97.50 multiply by 6/5: 6a+6p = 97.0 * 6/5 = 117.00 note that we didn't have to know how much each item cost. another way: multiply 1st by 2 and 2nd by 3 to get 6a+4p = 102 6a+9p = 139.50 subtract 1st from 2nd to get 5p...
*Friday, December 28, 2012 at 10:36am*

**maths --plse help me..**

direction vector of 1st line = (4,6,2) or reduced to (2,3,1) parametric equation of 1st: x = 0 + 2t y = -1 + 3t z = -1 + t direction vector of 2nd line = (7, 5, 0) parametric equation of 2nd: x = 3 + 7k y = 9 + 5k z = 4 solving for x's 0+2t = 3 + 7k 2t = 3+ 7k (#1) solving...
*Wednesday, December 12, 2012 at 11:46am*

**Math**

1st package --- x 2nd package -- 3x 3rd package -- 3x/2 4th: 3x/2 + 3 = 15 3x + 6 = 30 3x = 24 x=8 1st : 8 2nd : 24 3rd : 12 4th :15 Add them up. check : is 15 equal to 3 more than 12 ? YES
*Tuesday, December 11, 2012 at 9:16pm*

**physics math**

first car: a = 2 m/s^2 v = 2t + c when t = 0 , v = 0 m/s 0 = 0 + c , so c=0 so v = 2t d = t^2 + k when t = 0, d = 0 0 = 0 + k, so k=0 for 1st car: d = t^2 2nd car: v = 35 d = 35t + c when t= 0 , d = 0 , so c = 0 for 2nd car : d = 35t so we want t^2 = 35t t^2 - 35t = 0 t(t-35...
*Monday, December 10, 2012 at 9:00am*

**algebra**

a small business loan in the amount of 50,000 need to interest rate of 9% that compounds monthly for 7 years. What is the payment for 7 years, need formula for this. And what is the balance of the loan at the end of the 1st year? Show the formula used for each variable and the...
*Monday, November 12, 2012 at 7:54pm*

**Social Studies**

Is the 1st one true not false?
*Monday, November 12, 2012 at 6:22pm*

**Algebra**

from the 1st: y^2 = 4x^2 + 7 into the 2nd 9(4x^2 + 7) + 16x^2 = 323 36x^2 + 63 + 16y^2 = 323 52y^2 = 260 y^2 = 5 y = ± √5 sub y^2 = 5 into the 1st: 5 - 4x^2 = 7 -4x^2 = -2 x^2 = 1/2 x = ± 1/√2 4 solutions: x=√5, y= 1/√2 x = -√5, y = ...
*Friday, November 9, 2012 at 3:33pm*

**phisics**

m=7,45 g, m1=1220 g, m2=1603 g, v=348 m/s, v1 = 0.648 m/s The law of conservation of linear momentum for the 1st collision m•v+0=m1•v1+m•u u=(m•v-m1•v1)/m = v –(m1/m)v1= 348 – (1220/7.45) •0.648 = 241.9 m/s, The law of conservation of ...
*Monday, November 5, 2012 at 12:28pm*

**Physics**

m=7,45 g, m1=1220 g, m2=1603 g, v=348 m/s, v1 = 0.648 m/s The law of conservation of linear momentum for the 1st collision m•v+0=m1•v1+m•u u=(m•v-m1•v1)/m = v –(m1/m)v1= 348 – (1220/7.45) •0.648 = 241.9 m/s, The law of conservation of ...
*Monday, November 5, 2012 at 12:20pm*

**math 7 grade**

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get $1 . Each charity in the 2 nd. group will get 9 times as much or $9 . Each in the 3 rd. will get 9 times as much as each in the 2 nd. groups or $...
*Wednesday, October 24, 2012 at 2:06pm*

**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*

**math**

Are solving ? 1st times 4 ----> 8x + 20y = 40 2nd times 5 ---> -35x - 20y = 80 add them -27x = 120 x = -40/9 into the 1st: -80/9 + 5y = 10 -80 + 45y = 90 45y =170 y = 34/9
*Tuesday, October 16, 2012 at 9:11am*

**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*

**Alg 2**

notice that each of the equations is missing a different variable. If we can eliminate the variable "a" from the 1st and 3rd, we have a new equation with b's and c's like the 2nd equation so. from the 3rd a = -6c - 28 sub that into the 1st 6(-6c - 28) - 2b = ...
*Friday, October 5, 2012 at 11:31pm*

**calculus**

Could u plzz tell it in detail...the 1st 1
*Thursday, October 4, 2012 at 1:43pm*

**Math**

I will do #3, you try the others 3. 2x - 6y = -2 x = 3y-1 sub into the 1st: 2(3y-1) - 6y = -2 6y - 2 - 6y = -2 0 = 0 Ahhh, since the variables dropped out and we ended up with a TRUE statement, the two equations are really one and the same equation. (if you simplify the first...
*Wednesday, October 3, 2012 at 3:43pm*

**Math**

let time of 1st jet be t hrs then time of 2nd jet = t-1/2 hrs distance of 1st = 564t distance of 2nd = 722(t-1/2) = 722t - 361 but they went the same distance, so ... 564t = 722t - 361 -158t = -361 t = 2.285 hrs so the 2nd takes 2.285 - .5 hrs = 1.785 hrs or 1 hour and 47 minutes
*Wednesday, October 3, 2012 at 3:13pm*

**6th Grade Math**

[1st number]2+[2ndnumber]2=794 [13]2+[x]2=794 169+x2=794 x=794=169 x=2 625 x=2 625 x=625 5 625 5 125 5 25 5 5 1
*Wednesday, September 26, 2012 at 12:58pm*

**Math**

third piece ---- x 2nd piece = (4/7)x 1st piece = (5/8)(4/7)x = (5/14)x a) ratio of 1st : 2nd : third = (5/14)x : (4/7) : x = 5/14 : 4/7 : 1 = 5 : 8 : 14 b) do the same way c) add up the 3 pieces x + (4/7)x + (5/14)x = (14x + 8x + 5x)/14 = (27/14)x first : total = (5/14) x : (...
*Tuesday, September 11, 2012 at 8:57am*

**physics**

Same procedure as 1st prob. below.
*Thursday, September 6, 2012 at 4:26pm*

**Math**

subtract the first from the second xt - x = t-1 x(t-1) = t-1 x = 1, if t±1 in 1st: 1+y = 1 y = 0 in the last: (1+t)(1) + 0 = 3 1+t = 3 t = 2
*Thursday, August 9, 2012 at 10:31am*

**Mathematics**

A drinking straw of length 21 cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3cm shorter than the 1st piece the third piece is twice as long as first piece (a) state in terms of x the length of the pieces (i think i figured that one out...1st...
*Wednesday, July 4, 2012 at 3:49pm*

**physics**

Calculate the magnitude and direction of the Coulomb force on each of the three charges connected in series: 1st - 6 micro Coulombs (positive charge) 2nd - 1.5 micro Coulombs (positive charge) 3dr - 2 micro Coulombs (negative charge) Distance between 1st and 2nd - 3cm Distance...
*Monday, May 21, 2012 at 7:35am*

**physics**

Calculate the magnitude and direction of the Coulomb force on each of the three charges connected in series: 1st - 6 micro Coulombs (positive charge) 2nd - 1.5 micro Coulombs (positive charge) 3dr - 2 micro Coulombs (negative charge) Distance between 1st and 2nd - 3cm Distance...
*Wednesday, May 16, 2012 at 11:19pm*

**grade 11 math**

at giant tv sales, you can chose between 2 payments options for a new tv. 1st option is 2 pay $2399.99. 2nd option is to pay a $399.99 downpayment plus $2200.00 after one year. if interset is 4.2% per year, compunded quarterly, wich option is a better deal
*Tuesday, May 15, 2012 at 3:49pm*

**algebra ll**

1st term: 3rd Deg. 2nd term: 2nd Deg. 3rd term: 1st Deg. 4th term: 0 Deg. The deg. of a polynomial with one variable(x) is = to the largest exponent. Therefore, we have a 3rd deg. or 3rd order polynomial.
*Monday, May 7, 2012 at 3:56pm*

**Calculus**

to pass through the origin, r = (0,0,0) so k + 2s - t = 0 3k + 2s + t = 0 12 + 3s + 3t = 0 --> 4 + s + t = 0 add 1st and 2nd ---> 4k + 4s = 0 or k = -s add 1st and 3rd ---> k+4 + 3s = 0 sub in k=-s -s + 4 + 3s = 0 s = - 2 then k = 2 check: if k= 2 and s = - 2, then in...
*Monday, April 9, 2012 at 8:58am*

**math**

1st equation ---> 2x + 2y = 1 2nd equation times 2 ---> 6x - 2y = 12 add them 8x = 13 x = 13/8 sub into 1st: 2(13/8+ 2y = 1 2y = 1 - 13/4 2y = -9/4 y = -9/8 x = 13/8 , y = -9/8
*Saturday, April 7, 2012 at 10:36pm*

**algebra**

Mult 1st eq by 3; x-2y+3z = 0 Mult 2nd eq by 4: 2x - 3y + 4z = 1 Add 2nd and 3rd: -4y+5z = 2 Mut 1st by 2: 2x-4y + 6z = 0 Add that answer and 3rd eq: -5y + 7z = 1 5(-4y + 5z = 2) + -4(-5y + 7z = 1) -20y + 25z = 10 + 20y - 28z = -4 -3z =6 z = -2 Sub into the 1st eq: x - 2y -6 =...
*Monday, April 2, 2012 at 8:46pm*

**chemistry**

Data given are related to the Born-Haber cycle for HCl Calculate the amount of energy lost when the ionic species return to their molecular form. Atomization of ½H2(g)=217.6KJ/mol 1st Ionisation of ½H2(g)=1312KJ/mol Atomization of ½Cl2(g)=121 KJ/mol 1st ...
*Wednesday, March 28, 2012 at 5:40am*

**physics**

Please check 1st sentence for errors.
*Thursday, March 8, 2012 at 9:03pm*

**arithmetic**

nth term is a+(n-1)d sum of 1st n terms = n/2(T1+Tn) a = 2 sum of 1st 5 terms = 5/2 (2 + 2+4d) = 10+10d 6th term = 2+5d sum of terms 6-10 = 5/2 (2+5d + 2+9d) = 10+35d 10+10d = 1/4 (10+35d) 40+40d = 10 + 35d 5d = -30 d = -6 sequence is 2 -4 -10 -16 -22 -28 -34 -40 -46 -52 sum ...
*Tuesday, February 28, 2012 at 11:24am*

**Science**

For the 1st question I meant to ask Why not What
*Wednesday, February 15, 2012 at 5:55pm*

**math**

it takes a skier 30 seconds to ski down the 1st mountain to the second mountain that is 40 feet above ground. it takes the skier 6 seconds per foot to slide down. how many feet above ground is the 1st mountain?
*Sunday, February 5, 2012 at 2:34pm*

**English 7 - Journal Entry Check**

English Homework: Journal Entry Due Tomorrow Topic - Dicuss a time when you made a decison to do something (Determination), and perservered as a result. Please check my journal entry to see if it's good. Determination When I first came in the 7th grade at (school name), I ...
*Thursday, February 2, 2012 at 5:38pm*

**intro law enforcement**

date 9-22-08 fire in a lawyers office main st, ridgefield ct art work was smashed chairs, papers, and curtains started a fire ( match started it) building is empty over night .5 miles from downtown district 1st fire in a chain from arsonist left a law book on the porch what ...
*Monday, January 30, 2012 at 1:30pm*

**math**

#1 - simple interest, interest earned in 1st year = 3942-3796 = 146 rate = 146/3796 = .0385 or 3.85% check : is 2(146) + 3796 = 4088 ? , YES! #2, let the rate be i for 1st year ... 977.53(1+i) = 1036.18 1+i = 1.059998 i = .059998 or .06 = 6% check: is 977.53(1.059998)^2 = 1098...
*Thursday, January 19, 2012 at 11:41pm*

**Hardwork I done already! :) **

7th Grade 7th grade Grades (1st quarter to 4th quarter): English 7 - 99 Math 7 - 91 Social Studies 7R - 91 Science 7R – 80 Fine Art 7 (advance art) – 100 Strings 7 – 100 Gym 7 and 8 – A GPA: 1st Quarter – 93.50 2nd Quarter – 3rd Quarter – 4th...
*Friday, December 30, 2011 at 7:29pm*

**English**

1. comma needed 2. OK 3. OK You can also refer to these verb forms as the 2nd and 3rd principal parts of a verb. The 1st principal part of a verb is the basic form. 1st principal part (present): walk, talk, teach, sing... 2nd principal part (simple past): walked, talked, ...
*Tuesday, November 29, 2011 at 10:11am*

**My Grades **

I'm really glad I did well in the 1st quarter.
*Wednesday, November 23, 2011 at 6:47pm*

**Algebra**

y = ax^2 + bx + c a - b + c = 2 a + b + c = 7 16a + 4b + c = 5 subtract 1st from 2nd: 2b = 5 b = 5/2 a + 5/2 + c = 7 16a + 10 + c = 5 subtract 1st from 2nd: 15a + 15/2 = -2 15a = -19/2 a = -19/30 -19/30 + 5/2 + c = 7 c = 154/30 y = -19/30 x^2 + 5/2 x + 77/15
*Sunday, November 20, 2011 at 11:24pm*

**physics**

the momentum of which, the 1st car or the second?
*Saturday, November 5, 2011 at 12:51pm*

**science**

The 1st one is B
*Wednesday, November 2, 2011 at 5:32pm*

**Psychology**

I need to design an experiment with an independent variable and 2 levels. I would like to experiment with whether people say something when someone removes an object from a bag. So far I have Independent Variable -Removal of Object from bag 1st level-removal of significant vs...
*Sunday, October 30, 2011 at 10:15pm*

**Physics**

a.)1st-> 2.5*2 = 5kg 5kg(9.8m/s^2) = 49N 2nd-> 2.5kg(9.8m/s^2)= 24.5N b.)1st-> 5kg(9.8m/s^2 - 1.70m/s^2) = 5kg(8.1m/s^2) = 40.5N 2nd-> 2.5kg(8.1m/s^2) = 20.25N
*Friday, October 28, 2011 at 10:28am*

**Math**

time needed by 2nd faucet alone --- t hrs rate for 2nd faucet alone = 1/t time needed by 1st faucet alone --- t+2 hrs rate of 1st faucet along = 1/(t+2) combined rate = 1/t + 1/(t+2) = (t+2 + t)/(t(t+2) = (2t+2)/(t(t+2)) then 1/[ 2t+2)/(t(t+2)) ] = 4/3 t(t+2)/(2t+2) = 4/3 3t^2...
*Saturday, October 22, 2011 at 9:06am*

**math**

1st number --- x 2nd number --- 15 + (1/3)x x + 15 + (1/3)x = 35 times 3 3x + 45 + x = 105 4x = 60 x = 15 1st number is 15 2nd number is 15+15/3 = 20
*Monday, October 10, 2011 at 10:30pm*

**chemistry**

yes thank you the 1st one was considered strong :)
*Wednesday, October 5, 2011 at 6:44pm*

**Finance**

John deposited $1000 on 1st January 2011 in an account paying interest of 12% per annum compounded quaterly. He also deposited $800 (on 1st January 2011) in another account which pays 15% per annum effective interest. Find the time(n) when the two accounts will be equal value ...
*Wednesday, October 5, 2011 at 8:07am*

**physics**

Correction: Disregard the 1st 3 lines, and start at "a".
*Sunday, September 25, 2011 at 7:03pm*

**math**

1st tell us what you think it is
*Thursday, September 15, 2011 at 10:47pm*

**math **

Multiplication is not taught in 1st grade. http://www.mathsisfun.com/tables.html
*Tuesday, September 13, 2011 at 7:31pm*

**LA**

which narrative uses "we" 1st, second or 3rd
*Monday, September 12, 2011 at 7:01pm*

**1st grade**

my son has that exact question!.. its problem solving using objects.. the examples they give are.. 1-Alyssa bakes 6 cookies.. so u draw 6 cookies.. 2-Farah buys 7 pens.. draw 7 pens.. this question gets me?? WRITE A PROBLEM FOR THE PICTURE. (picture of a bone.dog.dog.dog.bone.?
*Friday, September 9, 2011 at 12:49am*

**math**

the 1st term is y^3
*Thursday, July 21, 2011 at 8:09am*

**English**

1. Use the verb "take" -- We will take the math exam on Tuesday. He took his biology exam last week. She takes her English exam later this morning. 2. Use the 2nd and 3rd choices here, not the 1st. 3. Go for a swim in the ocean or in a pool or lake. Take a bath at ...
*Tuesday, June 28, 2011 at 10:14pm*

**Chemistry**

Hi. Thanks for your help. So this is how I solved the equation. 2NO2(g) <-> 2NO(g) + O2(g) Since the 2NO2 is reversed from the 1st equation, I got (1/7.5x10^2) and then since the 2NO(g) and the O2(g) are doubled from the 1st equation I got (7.5x10^2)^2 for 2NO(g) and the...
*Saturday, May 28, 2011 at 5:22pm*

**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*

**Socials--no sites.**

What happened on April 1st, 1999? Why is this significant? On April 1st 1999, the NorthWest Territories were split in two. This was so significant because it's what created Nunavut and the Western Territory. What does this area have for resources? For resources it has ...
*Monday, April 25, 2011 at 11:12am*

**Statistics**

you draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck. a) are the outcomes on the two cards independent? why? b) find P(3 on 1st card and 10 on 2nd) c) find P(10 on 1st card and 3 on 2nd) d) ...
*Friday, April 15, 2011 at 1:03pm*

**Statistics**

P(10 on 1st card and 3 on 2nd)
*Friday, April 15, 2011 at 12:35pm*

**Trig**

since the standard cosine curve has a period of 360°, any answer you have will repeat itself in the next curve or 360° either to the right or to the left. by multiplying 360 by k, k and integer, I am simply adding/or subtracting multiples of 360 to any answer. to get ...
*Monday, March 14, 2011 at 7:34pm*

**pre algebra**

it depends on the percent weight of the final exam. (e.g. 40% of your grade, 35% of your grade, etc.) assuming your grading scheme for a B is around 83%... and assume your final exam is worth 40% of your overall grade and the rest of your grade (83.17%) is 60% of your overall ...
*Saturday, March 12, 2011 at 3:41am*

**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*

**Math - Arithmetic & Geometric**

1. a+ 34d = 1238 a+69d = 1483 subtract them 35d = 245 d = 7 then in the 1st equation: a + 238 = 1238 a = 1000 so term(105) = 1000 + 104(7) = 1728 2. ar^2 = 99 ar^4 = 891 divide the 2nd by the third. r^2 = 9 r = ±3 in the 1st a(9) = 99 a = 11 then term(7) = ar^6 = 11(3)^...
*Monday, February 28, 2011 at 5:58pm*

**algebra**

See your 1st post below.
*Saturday, February 12, 2011 at 8:27pm*

**MATH PLEASE HELP!**

See your 1st post for an answer.
*Wednesday, February 9, 2011 at 6:51pm*

**math**

See your 1st post
*Thursday, February 3, 2011 at 9:54pm*

**Algebra**

Do this the same way as shown in your 1st post.
*Sunday, January 30, 2011 at 6:40pm*

**Math**

See 1st post.
*Tuesday, January 25, 2011 at 9:19pm*

**Math**

RT = D (rate x time = distance) 800 = rate of 2nd jet T = time of 2nd jet 800T = distance of 2nd jet 600 = rate of 1st jet T + .75 = time of 1st jet (3/4h = .75h) 600(T + .75) = distance of 1st jet Distances are equal 600(T + .75) = 800T Solve for T
*Monday, January 24, 2011 at 8:23pm*

**Algebra**

Please see your 1st post for response.
*Saturday, January 22, 2011 at 5:28pm*

**math**

see your 1st post
*Tuesday, January 18, 2011 at 7:51pm*

**Math**

see your 1st post
*Tuesday, January 18, 2011 at 7:08pm*

**math**

see below, your 1st posting of this
*Wednesday, January 12, 2011 at 5:03pm*

**3rd grade Math**

In Harry's attic there are 3 spider webs. The first web is twice as large as the second. The 3rd web is 3 inches larger than the 1st web. The combined width of the 3 webs is 1 foot and 6 inches. How long is each web? Please provide explanation along with answer. Thank you ...
*Thursday, January 6, 2011 at 12:25am*

**1st grade**

i go to scott elementary school That will be changed to I go to Scott elementary school.
*Wednesday, January 5, 2011 at 8:54pm*

**trig**

Third time is the charm? I'll try again. Could someone show me how, (- sin (x/2) /( 2 sin (x/2) + cos (x/2)) is an alternate representation for, 1 / ( 4 tan (x/2) + 2 ) TIA Carol This doesn't require the solving of any equations. For example, ( same concept for what I ...
*Monday, January 3, 2011 at 6:45pm*

**Real Estate**

An 8% interest loan with payments of $299.17 had a balance of $8,550 after the July 1st payment. The borrower paid the regular scheduled payment on August 1st, then immediately paid the entire remaining balance. If a 3% prepayment penalty was imposed, how much was the borrower...
*Wednesday, December 22, 2010 at 10:54pm*

**accounting**

1st
*Friday, December 17, 2010 at 6:16am*

**12th Grade Calculus **

Find d^2y/dx^2 by implicit differentiation. x^(1/3) + y^(1/3) = 4 I know that first you must find the 1st derivative & for y prime I got 1/3x^(-2/3) + 1/3y^(-2/3) dy/dx = 0 Then for dy/dx I got dy/dx = [-1/3x^(-2/3)] / [1/3y^(-2/3)] I think that from here I would use the ...
*Tuesday, December 14, 2010 at 10:15pm*

**chemistry**

From this information- a + c_2_ ---> ac + c Slow ac + a ---> a_2_c Fast 2a + c_2_ ---> a_2_c + c Overall -you know that it is 1st order in a, 1st in c2, and 2nd overall. how? what about a reaction being fast or slow tells you if it's in first or second order?
*Sunday, December 12, 2010 at 5:39pm*

**Biology**

1st paragraph* typo
*Friday, December 10, 2010 at 11:08am*

**parenting**

Ok, you all need to take notes, there are two rules to parenting: Rule One- all children are the parent's 1st priority, always and forever, if you cannot put your children 1st, you have no business being a parent. Rule Two- See rule one This is just common sense people, if...
*Sunday, December 5, 2010 at 3:14pm*

**parenting**

Ok, you all need to take notes, there are two rules to parenting: Rule One- all children are the parent's 1st priority, always and forever, if you cannot put your children 1st, you have no business being a parent. Rule Two- See rule one This is just common sense people, if...
*Sunday, December 5, 2010 at 3:14pm*

**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*

**1st grade**

Do you mean rotate or move around the sun? If you mean rotate, this is a hard question to answer. It depends on where you are on the earth. If you mean going around the sun, it goes about 65,000 - 67,000 miles per hour. That depends on how close you are to the sun.
*Tuesday, November 30, 2010 at 8:35pm*

**pre algebra**

1st number = x, 2nd number = 4x - 5, 3rd numbe = 2x - 9, 4(2x - 9) - x 6, 8x - 36 - x = 6, 7x 42, x = 6 = 1st number. (4x - 5) = 4*6 - 5 = 19 = 2nd number. (2x - 9) = 2*6 - 9 = 3 = 3rd number. .
*Monday, November 29, 2010 at 5:56pm*

**4th grade**

My answer to this question is: Circus Clowns were 1st with 12 members Marching Band 2nd with 24 members Girl Scouts 3rd with 30 members Jugglers 4th with 12 members Boy Scouts 5th with 15 members Dancers 6th with 6 members and Football Team 7th with 28 members I am not sure ...
*Thursday, November 18, 2010 at 10:25pm*

**MATH HELP ME 1st**

HELP
*Thursday, November 18, 2010 at 7:25pm*

**MATH HELP ME 1st**

that makes no sense are u a teacher
*Tuesday, November 16, 2010 at 8:01pm*

**MATH HELP ME 1st**

then I would choose commutative
*Tuesday, November 16, 2010 at 7:53pm*

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