Sunday

August 30, 2015
Total # Posts: 256

**Chemistry**

A mixture of C3H8 and C2H2 has a mass of 2.5 g . It is burned in excess O2 to form a mixture of water and carbon dioxide that contains 1.5 times as many moles of CO2 as of water. Find the mass of C2H2 in the original mixture.
*August 19, 2015*

**physics**

If a staircase has five steps each 1.45m high and 1.5m wide. A ball is placed on the top of the staircase what maximum (horizontal) velocity be given to the ball so that it directly hits the lowest plane?
*August 1, 2015*

**Math**

(R)-1
*July 31, 2015*

**Visual Logic**

Create an amortization schedule to calculate your monthly payments on a car and show the loan balance over time with visual logic? Must include assignment statements, IF statement, loop, array. amount= 20000 interest rate= 2% Pay by= 5 yrs So far i've done monthly payment...
*July 23, 2015*

**Citizenship education**

Define character in six page
*April 10, 2015*

**math**

what is moving number of 90
*March 29, 2015*

**physics**

A physics student pulls a block of mass m = 20 kg up an incline at a slow constant velocity for a distance of d = 4.5 m. The incline makes an angle Δ = 30° with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is µk = ...
*March 8, 2015*

**Math**

Mrs. Monk is wrapping presents . If a roll and a half wraps 5 gifts, if there are 9 same sized presents, how many rolls of paper are needed?
*February 20, 2015*

**Math**

Mrs monk rented a truck for 3 days. Enterprise charged her $40. per day plus $.25 per miles. The total charge was $142.75. How many miles did she drive the truck? (1) 411 miles (2) 91 miles (3) 251 miles (4) 571 miles
*February 20, 2015*

**Math **

Mrs. Monk rented a truck for 3 days. Enterprise charged her $ 40 per day plus $0.25 per miles. The total charge was $142.75. How many miles did she drive the truck?
*February 20, 2015*

**physics**

Mrs. Meissner is taking her dog Cooper for a walk. Cooper stops to sniff a tree stump and Mrs. Meissner has to exert a force of 148 N on Cooper's leash (held 35 angle above the horizontal) in order to get him to move 2.0 m away from the tree stump. Calculate the work donw ...
*November 11, 2014*

**math can anyone please help ! D:**

does anyone know the answer ?
*October 4, 2014*

**math**

a hall charges $30 per person for a sports banquet when 200 people attend. for every 10 extra people that attend, the hall will decrease the price by $1.50 per person. what number of people will maximize the revenue for the hall?
*October 4, 2014*

**math**

for what values of k in y=3x+k with the curve y=-x^2-3x+6 intersect the line at 2 points
*September 29, 2014*

**math**

why did u multiply the whole thing by "y" for (24-2y)y ?
*September 27, 2014*

**math**

24/3 is 8
*September 27, 2014*

**math**

arnold has 24m of fencing to surround a garden, bounded on one side by the wall of his house. what are the dimensions of the largest rectangular garden that he can enclose? how do i solve this question please help step by step solutions please
*September 27, 2014*

**math**

ok thanks
*September 27, 2014*

**math urgent -anyone??**

help please!!!
*September 27, 2014*

**math**

what does this question mean : Sketch a graph to show four graphs in each family. a) y=(x-3)(x+6) b) y= (x+1)(x+1)
*September 27, 2014*

**MATH ASAP!!**

thankyouuu !!
*September 23, 2014*

**MATH ASAP!!**

Rationalize the denominator using the conjugate. 1/1-√7+√5 please show all the steps and explain it
*September 23, 2014*

**math**

Rationalize the denominator using the conjugate. 1/1-√7+√5 please show all the steps and explain it i dont get it
*September 23, 2014*

**math help ASAP!! please**

i need help asap
*September 17, 2014*

**math help ASAP!!**

simplify fully! 3x-2/x+4 = 18-4x/x^2-16 - 3x+2/4-x show all of your steps pleasee !!
*September 17, 2014*

**math help **

find the ratio of the volume to the surface area of the rectangular prism shown. L= 4x+8 W= x+2 H= 2x+4 please show all your steps please!!
*September 16, 2014*

**Math**

show all the steps when solving the question !!! pleasee
*September 16, 2014*

**Math**

a camera's focal length, F, is related to the distance from the subject, S, and the image distanc, I, by the equation 1/S+1/I=1/F Please show all your steps! thanks you
*September 16, 2014*

**math help!!**

factor: a^2/36 - b^2/49 show all your steps please!!
*September 4, 2014*

**Math**

factor: a^2/36 - b^2/49 show all your steps please !
*September 4, 2014*

**math help!!**

factor: 9n^2-25
*September 3, 2014*

**physics**

KE = .5 x (m x v^2) so KE = .5 x (.2 * (49.6)^2)
*July 31, 2014*

**math**

A specially made pair of dice has only one- and two-spots on the faces. One of the dice has three faces with one-spot and three faces with two-spot. The other die has two faces with one-spot and four faces with a two-spot. One of the dice is selected at random and then rolled ...
*July 29, 2014*

**math**

what is the vertex of y=x^2-4 ??
*June 17, 2014*

**someone please answer**

if you did read the book were there any biases in it?
*June 5, 2014*

**English help!!**

did anyone read the book "The girls" by Lori Lansens??
*June 5, 2014*

**english please help!! -anyone?!?!**

help me asap
*May 25, 2014*

**english please help!!**

In the book "The Alchemist" -by paulo coelho, how did Santiago's character change? And also what about the Englishman & Fatima.
*May 25, 2014*

**science**

1) why are images produced under the microscope reversed & inverted? 2) why does a specimen need to be centered in the field of view on low power before going to high power?
*May 13, 2014*

**math-factor**

factor: 2x^2(x-3)+12x(3-x)-18(x-3)
*May 5, 2014*

**science-physics**

a ray of light traveling from the air into crown glass strikes the surface at an angle of 30 degrees. what will the angle of refraction be? please help me!! don't ignore this !
*April 24, 2014*

**physics**

aww okay but thanks anyways
*April 16, 2014*

**physics-can anyone please help mee!!**

help me pleaseee, i don't get it!!!
*April 16, 2014*

**physics**

calculate the image positions and magnifications for an object 3cm tall and a mirror of focal length +12 with the object at the following positions: 2.5 f, 2.0 f, 1.5 f, 0.5 f. please help me don't understand it at all. it would be best if you can explain it to me rather ...
*April 16, 2014*

**chemistry**

what is a complete and incomplete combustion reaction ??
*March 30, 2014*

**math help**

factor: 1) (x+y)^2 - (a+b)^2 = [(x+y) - (a+b)] [(x+y) + (a+b)] = [x+y-a-b] [x+y+a+b] 2) 6x^4 - 6 = 6(x^4 - 1) = 6(x^2-1)(x^2+1) Is this right?
*March 28, 2014*

**math help!! ANYONE?!?!**

someone please help!!!!
*March 27, 2014*

**math help me pleasee!!**

help mee with the two questions, i don't get it and i have a test tomorrow!
*March 27, 2014*

**math help!!**

i also need help with this question factor: (x+y)^2-x-y
*March 27, 2014*

**math help!!**

Factor: 2(2x^2-x)^2-3(2x^2-x)-9
*March 27, 2014*

**math help!!**

okay thankyou so much!! :-)
*March 27, 2014*

**math help!!**

factor: (x^2+5x)^2 - 36 and (a-b)^2 - (c-d)^2 show the steps pleasee!
*March 27, 2014*

**math-still confused**

the answers at the back of the textbook say that the answer is (a-b+c-d)(a-b-c+d) i don't get it :$
*March 27, 2014*

**math help!**

how did you get that??
*March 27, 2014*

**math help**

factor: (a-b)^2 - (c-d)^2
*March 27, 2014*

**math help ASAP!!**

factor: 2m^3 - 7m^2n - 15mn^2
*March 27, 2014*

**math**

thankyou!
*March 27, 2014*

**math check my answer!**

no the answer is -5(2x-y)(2x+y) ^is that right??
*March 27, 2014*

**math**

is it -20x^2 + 5y^2 = -5(4x^2-y^2)
*March 27, 2014*

**math**

factor: -20x^2 + 5y^2
*March 27, 2014*

**math**

ohh ok thanks! :)
*March 27, 2014*

**math i don"t get it**

why does (y-z) turn to (y+z) ??
*March 27, 2014*

**math-help!!**

oh okay thats for the first question i think but what about this question x^2-(y - z)^2 ??
*March 27, 2014*

**math-help me please!!**

^is that right??
*March 27, 2014*

**math**

is the answer x^2 - (y - z)^2 = [x- (y-z)] [ x+ (y-z)] = (x-y-z) (x+y-z)
*March 27, 2014*

**math**

so how do i do x^2 - (y - z)^2
*March 27, 2014*

**math**

how do you factor: (a - b)^2 - c^2
*March 27, 2014*

**english**

when is a semi colon used?
*March 25, 2014*

**english anyone?? Ms.Sue? is this right?**

anyone help asap
*March 25, 2014*

**english**

then is it C and is the other one D??
*March 25, 2014*

**english- help me please**

choose the corect one. a) Prateek's and Skyler's computers have been upgraded to increase performance, capacity, and durability. b)Prateek and Skyler's computers have been upgraded to increase performance, capacity, and durability. c) Prateeks' and Skylers'...
*March 25, 2014*

**english**

choose the correct one. a) I wore all of the safety equipment for skateboarding; however, I still hurt myself. b) I wore all of the safety equipment for skateboarding, however, I still hurt myself. c) I wore all of the safety equipment for skateboarding however; I still hurt ...
*March 25, 2014*

**english**

oh kk thanks!
*March 25, 2014*

**english**

i have a question say you're writing a sentence such as "I ate apples, bananas, oranges, and grapes." is there a comma before 'and' or no?
*March 25, 2014*

**chemistry help**

what is lead (II) acetate + hydrogen sulphide --> Pb(C2H3O2)2 + H2S --> how do i figure it out?
*March 25, 2014*

**english-essay writing topic**

i dont have a dog and what is a thesis?
*March 18, 2014*

**english-essay writing topic**

whats a thesis? i forgot
*March 18, 2014*

**english-essay writing topic**

thanks for the help! :)
*March 18, 2014*

**english-essay writing topic**

i was kinda thinking of writing about procrastination and how i keep things till the last minute. since it has to be about a particular event i could write about a time that i have learnt not to keep things till the last minute. this is something that i've learnt myself ...
*March 18, 2014*

**english-essay writing topic**

someone please give me a good essay writing topic pleaseeee!
*March 18, 2014*

**english-essay writing topic**

it has to teach the audience something so i'm kinda stuck on what to do. please help me!
*March 18, 2014*

**english-essay writing topic**

i dont know please help me :(
*March 18, 2014*

**english-essay writing topic**

what is a good topic to write about for a personal essay? it has to be something that is meaningful. PLEASE HELP ASAP!!!
*March 18, 2014*

**physics**

Use the following information to calculate the speed of a ball in a pinball machine at a specific location. The ball is launched by using a spring (k = 684 N/m) compressed by 7.8 cm. Consider the starting position of the ball to be its location when the spring is compressed. ...
*March 10, 2014*

**physics**

A bead of mass m = 42.5 kg is released from point A which is located 5 m above the ground and slides on the frictionless track as shown in the figure. Determine the beads speed when it reaches point C which is located 2.0 m above the ground.
*March 10, 2014*

**physics lab**

The experiment done in lab is repeated, using a ball that has unknown mass m. You plot your data in the form of f 2 versus M/L, with f in rev/s, M in kg, and L in m. Your data falls close to a straight line that has slope 7.82 m/(kg · s2). Use g = 9.80 m/s2 and ...
*February 24, 2014*

**physics**

A small block has a horizontal velocity of 4.00 m/s as it slides off the edge of a table. The table is a vertical distance of 0.95 m above the floor. If g = 9.80 m/s2, how far does the block travel horizontally while it is in the air?
*February 24, 2014*

**Math**

When Marcia started walking a 6 mile section of the trail, it took her 3.3 hours.After 1week her time was 3.1hours and after 2 weeks, it was 2.9 hours. If the pattern continues, what will Marcia's time be after 5 weeks?
*February 10, 2014*

**Science**

How are the reactants and products of photosynthesis and cellular respiration related?
*December 9, 2013*

**Stats**

The random variable U has mean 10 and standard deviation 5.The random variable V is de ned by V =12(U + 5).Find the mean and standard deviation of V.
*November 19, 2013*

**Statistics**

To CC, 2 is B, 6 is B
*August 2, 2013*

**Math**

Yes... But SOL math test told me 5/18 was not the answer....it is 2 and 1/2
*July 1, 2013*

**Math**

Ms. Sue I did but got it wrong was told the answer was 2 and 1/2.. don't understand?
*July 1, 2013*

**Math**

Which fraction is equivalent to 5/6 * 1/3 ? 5/18 2/5 1 and 1/6 2 and 1/2
*July 1, 2013*

**Math**

Which fraction is equivalent to 5/6 (divided sign) 1/3? 5/18 2/5 1and 1/6 2and1/2
*July 1, 2013*

**calc**

x^2 + √(x+y) + y^2 = 0; y is a differentiable function of x
*May 8, 2013*

**CALCULUS**

substitute 4 into x (4^2+3(4)+4)/(5(4)-12) =4
*May 8, 2013*

**Math**

factors of 10 (10,1,2,5) since you get 5-2 = 3...you would use 5,2 (x +5)*(x-2) = foil x^2 +(-2x)+5x-10 = x^2 + 3x - 10
*May 8, 2013*

**math 12**

answer is C, you can graph it, and see the extremas
*May 8, 2013*

**calc**

Integrate 1/(ln(x)); f(e^e)=1 please provide step! confused because of f(e^e)!
*May 8, 2013*