Sunday

August 2, 2015

August 2, 2015

Total # Posts: 240

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
*October 25, 2012*

**Physics**

An airplane flies due north at 260 km/h with respect to the air. There is a wind blowing at 60 km/h to the northeast with respect to the ground. What are the plane's speed and direction with respect to the ground?
*October 25, 2012*

**Algebra**

write the standard form of the equations: through (1,3) and (-4, -4) through (5,4) and parallel to y=4
*October 25, 2012*

**Algebra**

write the following in standard form: slope= 2/3 y- intercept= 3
*October 24, 2012*

**5th grade word problems**

5 3 -- * -- 100 x 5x=300 x=60 1. put 5 over 100, oranges over oranges. And 3 over X. glasses over glasses 2. cross multiply, 5*x and 100*3 3. divide both sides of the equation by 5 to get x by it's self. 4. X=60, you can make 60 glasses with 100 oranges
*October 24, 2012*

**3rd grade math HELP ASAP**

373
*October 24, 2012*

**3rd grade math**

78
*October 24, 2012*

**Science**

oh I get it now, thank you
*August 23, 2012*

**Science**

um sorry but Ms.Sue it's not supposed to be the separate functions but how it all ties together
*August 23, 2012*

**Science**

I have this last question left and I'm stuck!!! Explain how cell organelles are similar to a factory. Must be 1/2 a page.
*August 23, 2012*

**geography**

We are not geeks. WE are smart individuals.
*August 21, 2012*

**math**

Grapes cost $2 per pound. How much does the given amount cost? 0.25 pounds.
*August 19, 2012*

**math**

There are a total of eight possible outcomes for three coins: HHH, HHT, HTH, THH, TTH, THT! HTT, TTT. Out of these eight outcomes, seven of these show at least one tail (all except HHH). After counting, we find that six of these seven outcomes have at least one head, so the ...
*July 26, 2012*

**Math **

Factor the polynomial completely. 6x^3 + 36x^2 - 240x
*May 18, 2012*

**Science**

The sun emits billions of watts of light,heat,and energy ever second. How much of this light,heat, and energy does the Earth benefit from?
*March 28, 2012*

**calculus**

FInd the area of the region bounded by the graphs of y= 3x^2+1 , y=0, x=-2.7, x=2.5
*March 1, 2012*

**8th grade math**

what does the problem look like?
*March 1, 2012*

**math**

12+ 2n=60 48= 2n 24= n :)
*March 1, 2012*

**Math**

(n-14)/ 12 = 248 n-14= 2976 n= 2990
*March 1, 2012*

**math**

make sure the ratio of the dimensions stays the same. say if you had a 3 x 4 picture you could change the dimensions to 6 x 8 and because they are the same ratio the image should not be distorted.
*March 1, 2012*

**Physical Education**

I have the ability to watch it, I'm just not allowed to because we have a bandwith limit.
*February 23, 2012*

**Physical Education**

That's the thing, the program doesn't /have/ an online teacher.
*February 23, 2012*

**Physical Education**

1. Aerobic activities can be done for an extended period of time and supply oxygen to your muscles. Such activities help develop _______________________. 2. You can change your _______________________ by exercising regularly and eating healthfully. 3. The ...
*February 23, 2012*

**Pre Calc**

A plumber charges $40 per hour for labor with a minimum labor charge of $30. For example, if she does her repairs in only 0.2 hours, then $40*0.2=$8, which is less than the minimum, so she would charge $30 for labor. We will assume she can repair any problem in one day – ...
*February 6, 2012*

**math**

mae has a oval racetrack. 2 curves, each is 1/2 of the circle and each on a radius of 21". 2 straight-aways connect the circle and are 46" long. what is the total distance around the circle?
*January 26, 2012*

**math**

mae has a oval racetrack. 2 curves, each is 1/2 of the circle and each on a radius of 21". 2 straight-aways connect the circle and are 46" long. what is the total distance around the circle?
*January 26, 2012*

**Mixed numbers and improper fractions**

125/12
*January 25, 2012*

**Math**

Does anyone know the answer to the math riddle "Did you hear about..." the answer is 12 words and it's pg 167.
*December 6, 2011*

**chemistry**

A reaction occurs where the concentration of reactant A changes from 0.74 moles/liter to 0.63 moles/liter in 20 seconds. what is the average rate of reaction?
*November 17, 2011*

**social studies.**

15. What was a result of WWII on women’s rights in the US? A.Women were greatly oppressed and suffered setbacks B.Women lost the vote during wartime C.Opportunities for women increased D. None of the Above I believe its C ? 16. What happened with most of the working women...
*November 7, 2011*

**geometry**

solve this proof: PR is congruent to DE, PT is congruent to DF, Angle R is congruent to Angle E, Angle T is congruent to Angle F.. Prove Triangle PRT is congruent to Triangle DEF
*November 6, 2011*

**chemistry (please help)**

A 2.8-L engine in a vehicle with air-conditioning uses 26.5-L of coolant. If the coolant has a density of 1.11 g/ml, what mass does the coolant add to the vehicle?
*September 6, 2011*

**geometry**

If the length of a rectangle is twice its width, w, write an expression to represent the perimeter of the rectangle. If the perimeter of the rectangle is 72 inches, what is the length and width of the rectangle?
*September 6, 2011*

**Algebra**

What is 3y^2-27? Explain please.
*July 25, 2011*

**Math-geometry**

Do it yourself.
*July 13, 2011*

**math**

1. Consider the function f(x) = x3 + 7x2 + 2x - 40 . a. Find the possible rational roots of f(x) = 0. b. Use synthetic division to divide f(x) by x - 2. Show all your work. Use your answer to explain whether or not x – 2 is a factor of f(x). c. Factor f(x) completely. ...
*June 6, 2011*

**chemistry**

what sample size of .9181M vinegar would require 27.50 mL of .5185M of NaOH for neutralization?
*April 13, 2011*

**science**

what is the dencity of an object that has a mass of 92 grams and a volume of 40 milliliters? ~thx!
*March 31, 2011*

**math**

7x^2-20x=3
*March 16, 2011*

**Third Grade Math**

i think 1 gram but i need someone elses opinon....
*March 14, 2011*

**Third Grade Math**

I need a small button...
*March 14, 2011*

**Third Grade Math**

About how much does a button weigh? 1 gram 100 grams 1 kilogram 10 kilograms Thanks!
*March 14, 2011*

**math**

If there are 7:5 boys and girls in a class and there are 21 girls how many boy are there in the class?
*February 14, 2011*

**Chemistry**

I need help predicting the products and naming them using classes and subclasses. a. Br2+BaI2 b. CdBr2+Na2S c. H2+Br2 d. H3PO4+Ca(OH)2 (Numbers above are supposed to be in subscript form)
*February 10, 2011*

**calculus**

rotate the axes and eliminate the xy term of 3(x^2)+2xy+3(y^2)-8
*January 17, 2011*

**calculus**

rotate the axes and eliminate the xy term of 3(x^2)+2xy+3(y^2)-8
*January 17, 2011*

**physics**

A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 1.05 J of work is done. What is the mass of the block?
*January 12, 2011*

**physics**

A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 1.05 J of work is done. What is the mass of the block?
*January 12, 2011*

**Chemistry**

If .002 L of .650 M NaOH are added to 1.0 L of 0.9 M CaCl2 what is the value of the reaction quotient and will a precipitate form? I keep getting 0.0011 because I thought the answer was [Ca+][OH-] but that's not correct, I think I'm missing a final step
*December 5, 2010*

**Chemistry**

Sorry I meant Ca+ not Cu (typo) and Q value as is quotient reaction value. Q = K at equilibrium, it measures if a precipitate will form
*December 4, 2010*

**Chemistry**

One other question that I cannot figure out what I'm doing wrong is this.. If .002 L of .650 M NaOH are added to 1.0 L of 0.9 M CaCl2 what is the Q value? I keep getting 0.0011 because I thought the answer was [Cu+][OH-] but that's not correct
*December 4, 2010*

**Chemistry**

Got it, thank you!
*December 4, 2010*

**Chemistry**

How many grams of BaSO4 can dissolve in 1.5 L of a 0.010 M solution of Na2SO4? Ksp= 1.1 x 10^-10 I thought the answer was 1.1x10^-8 M then multiply by the molar mass to get the amount of grams but my answer isn't correct. PLEASE HELP!
*December 4, 2010*

**physics**

Sphere A: Is Rubber it is an insulator, and that means the electrons are all in there one space. Thats the dark spots you were talking about. Sphere B: Is Copper and it is a conductor; the electrons are all over the sphere. As is the opposite to the sphere A. And this ...
*December 1, 2010*

**Pre-Cal**

120 pi radians
*November 19, 2010*

**Language**

we are reading a book called the children of wilesden lane and i dont have the book so i dont know what "the last paragraph of chapter three" is PLEASE HELP!!!!
*November 4, 2010*

**poetry**

i need help on thinking of a acrostic poem for DOLPHIN.
*May 25, 2010*

**poetry**

i need help on making a TROCHAIC poem for a project. i really need help
*May 19, 2010*

**math**

it will take 8 days for the snail to reach the top. 5-3+5-3+5-3+5-3+5-3+5-3+5-3+5-3= 16
*May 19, 2010*

**poetry**

oh it's okay. thank you :)
*May 19, 2010*

**poetry**

i need some examples of a: metaphor, personification, and trochee. help please
*May 19, 2010*

**poerty**

i need some examples of a metaphor, personification, and trochee. help please
*May 19, 2010*

**math**

so 3*7=23+1=24 24 over3 = 8?
*May 16, 2010*

**math**

i need help to find out 7 1/3 (seven and one third) is in a decimal? please help me.
*May 16, 2010*

**Math**

What is the product of 3y2 and 4y5?
*April 23, 2010*

**math**

Sam has a savings account that increased in value over a twelve month period from $8765.00 to $9006.06. He made no deposits or withdrwals in that time. What percent interest did he recieve for the 12 month period?
*February 15, 2010*

**government**

My teacher told me and my class to write a essay on why we would want to live in a capitalist government but I have no idea what to write can you help?
*February 8, 2010*

**math**

about 39
*February 3, 2010*

**9th grade**

how do i solve 3y-4+3x-5x+2 and solve for x and y
*January 7, 2010*

**chemistry**

Why does the total energy (Ke+Pe) decrease with height?
*December 6, 2009*

**social studies**

What is the social triangle of the woodland cree?
*October 18, 2009*

**math**

Thomas and Samantha work on weekends and holidays doing odd jobs around the neighborhood. they are each paid by the day, not the hour. they each earn the sme whole number of dollars per day. last month thomas earned $ 184 and samantha earned $ 207. how many days did each ...
*October 12, 2009*

**math**

i am using U.S. gallons my teacher said that 1 liter = approx. 1.06 quart. Can I just divide 2000 by 4?
*September 22, 2009*

**math**

2000 liters = about how many gallons?
*September 22, 2009*

**social studies**

what si the defonition to duma?
*August 27, 2009*

**Math**

reduce simplify a fraction to its lowest terms 10/12
*August 22, 2009*

**Algebra II**

Find the LCM of f(x) = 4(x - 1)^2 (x^2 + 6x + 5) and g(x) = 10(x - 1) (x + 2) * (x^2 + 7x + 10)
*May 24, 2009*

**algebra II**

i got the same answer but used the quadratic :) thank you for all your help everyone!
*May 24, 2009*

**algebra II**

so should i just multiply that all out and then plug it in?
*May 24, 2009*

**algebra II**

I'm quite clueless as to how to solve this. I know the quadratic equation but am not sure how to get this equation into the format to plug in to the quadratic... Solve the quadratic equation using the formula [1/(1+x)]-[1/(3-x)]=(6/35) Show your work
*May 24, 2009*

**algebra II**

Solve the quadratic equation 12x^2 + 36a^2= 43ax by factorization Show your work
*May 24, 2009*

**Algebra 2**

does anyone know what (4 - 6i)/(4 + 6i) = ?
*May 2, 2009*

**math**

how do i list fractions from least to greatest without the same denomonator?
*April 6, 2009*

**physics**

Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 1.5e6 m/s. What is the distance of closest approach? PLEASE HELP! im very confused.
*March 15, 2009*

**Human Geography (Religion)**

So I have to do a project on the Cultural Interaction in Religion. My religion is Sikhism. Here are the questions I'm supposed to answer in my presentation: How does the religion impact other aspects of culture? How does this religious faith influence the economic, dietary...
*January 20, 2009*

**math help please!!**

thank you!
*January 10, 2009*

**math help please!!**

simplify (5x^7)^4
*January 10, 2009*

**physics**

a force of 50 N directed at an angle of 45 from the horizontal pulls a 70 kg sled across a frictionless pond. the acceleration of the sled is most nearly
*January 8, 2009*

**mathj**

thanks
*January 7, 2009*

**mathj**

inverse of (x+2)^2 is it sqrt of (x) - 2
*January 7, 2009*

**math**

thats an opinion
*January 6, 2009*

**math**

solve for t 13e^(.081t)=25e^(.032t)
*January 6, 2009*

**history**

reparations
*January 6, 2009*

**math**

How do you write out the number 2.536? Thanks. Maddie
*December 1, 2008*

**math**

How do you write 2.536 in words? I've never seen it before. Thanks! Maddie
*December 1, 2008*

**Mathematics**

Pam and Tim decide to start saving money for their daughter's college education. They open a college savings plan with a 400 initial investment and next month start to make monthly deposits of 100. If the account pays 8.00% compounded monthly, how much will the account be ...
*November 17, 2008*

**Mathematics**

An investor wants to know the amount she should pay for an oil well expected to yield an annual return of 30000 for the next 30 years, after which the well will be dry. Find the amount she should pay to yield a 14% annual return if a sinking fund earns 10% annually. Round the ...
*November 17, 2008*

**Mathematics**

Jake's car needs repairs but he is short of cash. A payday loan company charges a fee of 46 for a two week loan of 250. This is equivalent to a discounted loan with proceeds of 250 and a loan amount of 296. What is the per annum interest rate?
*November 12, 2008*

**Mathematics**

A set of Egyptian cotton sheets has a list price of 130.00 but is on sale for 84.50. By what percent is the list price reduced
*November 12, 2008*

**math**

m divided by -12=5
*November 11, 2008*