Friday

December 19, 2014

December 19, 2014

Total # Posts: 577

**Physics**

a 1000 kg space craft at 500 m/s is on a collision course with a 400 kg satellite travelling at 700 m/s . Their paths are converging at a 45 degree angle . After the collision they remain locked together. What is the final speed of both satellites? What angle is this at
*December 12, 2014*

**Math**

The sum of the squares of three consecutive whole numbers is 77. Form a quadratic equation and hence solve it to determine the numbers. (Hint: let the three consecutive numbers be x, x+1 and x+2)
*December 7, 2014*

**Math**

Samantha wants to buy 6 roses 4 carnations and 8 tulips she estimates that she will spend about 14 dollars on these flowers do you agree math chapter 5
*December 1, 2014*

**Chemistry**

copper is a product of the reaction that occurs when dry ammonia is passed over a sample f heated copper(2) oxide.The equation for the reaction is given: 2NH3+3CuO=3Cu+3H2O+N2 Calculate the mass of copper produced if 0.12dm^3 of nitrogen is produced at room temperature and ...
*November 26, 2014*

**Pre algebra**

My problem says The cost of a cell phone for one month is a linear function of the numbers of minutes used. The total cost for 20, 35, and 40 additional numbers Re shown. Then it gives a table where it's 20/48$, 35/54$ and 40/56$ The first question is , Find the linear ...
*November 24, 2014*

**pre-algebra**

Wel-min makes a square quilt that has an area of 100 square feet.It has 25 square blocks, each the same size. What is the legth of each side of a block? A-2 feet B-4 feet C-6 feet D-10 feet
*October 30, 2014*

**math**

if you have 6 cars, 10 trucks, 14 suv, 15 minivan, at this rate how many trucks would pass luann if 90 vehicles passed her. show your work
*October 23, 2014*

**AP Calculus**

In the answer space below, provide the larger of the two positive integers that add up to 60 and have the largest possible product.
*October 16, 2014*

**AP Calculus**

If 600 cm2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter without commas. For example, if the answer is 2,000 write 2000.
*October 16, 2014*

**Matt **

Are you sure
*October 9, 2014*

**S.O.S**

please I need to know
*October 9, 2014*

**science**

did I get those correct
*October 9, 2014*

**science**

3.If a gap in the fossil record exists between ancient and modern forms of a species, which of the following is the most appropriate conclusion? A. The gap indicates that gradualism must have occurred for the species to evolve from ancient to modern form.*** B. The gap ...
*October 9, 2014*

**S.O.S**

please help and with the other ones I just posted
*October 9, 2014*

**ms.sue **

is that correct please help
*October 9, 2014*

**science**

1.Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolution change might happen fast sometimes? A. Homologous structures B. Fossils*** C. Reproduction rates D. DNA sequences 2.Which of the following provides ...
*October 9, 2014*

**math**

If a student scored an average of 60% on a test, what score would he/she need to average it out to a passing 80+. What formula would you use. This isn't a question on a test, it's one I've been trying to find. I am able to retake a test multiple times and will ...
*October 7, 2014*

**English**

I need some help with point for an essay in English about the great Gatsby. I have a question about development of character or interests, and I don't know how I could write about Gatsby in this idea. I also need the writers style and Fitzgerald's view and tone towards...
*October 7, 2014*

**math**

Wouldn't it be 20/46? Since 20+10+9+7= 46 which is the total of students. And since you are trying to find what percentage of them are 9th graders it's 20. So 20/46= 0.43 which is 43% So the answer is 43% of the students on the buss are 9th graders.
*October 6, 2014*

**Social Studies**

Did you get an a on this
*October 3, 2014*

**Science**

why is burning magnesium an irreversible reaction?
*October 3, 2014*

**science**

The chemical formula for copper sulfate pentahydrate is CuS4°H2O. Based on your observations, what do you think happens to this formula when the crystals are heated? In assuming that the answer has something to do with the h2o because when it's heated it becomes ...
*October 2, 2014*

**Chemistry **

-Describe the zero sum rule -True of False: The formula for the nitride ion is N^(-3) -True of False: The stock system shows the charge on the negative ion
*October 1, 2014*

**Math**

A ball is dropped from ten feet and caught after it touches the ground on the 30 th bounce, what is the distance traveled by the ball?
*September 23, 2014*

**Math**

Fern rounded to the nearest ten to estimate 548-132. She subtracted 540-130=410. Is Fern's estimate correct? Explain.
*September 23, 2014*

**math**

Daphne gave away 3 more than half her apples. She gave away 17 apples in all. how many apples did she have originally?
*September 22, 2014*

**physics **

A girl and the bike she is riding have a combined mass of 73.7 kg and are initially at rest but then she tosses the jug of water in her hand the forward direction. If the jug has a speed of 3.0m/s relative to the ground and the girl and bike move in the opposite direction at -...
*September 15, 2014*

**chemistry help!**

The Colorado River is diverted to flood fields. If the river is flowing at 17,600 ft3/s , how long will it take to flood a 5500 acre field to a depth of 2.00 meters? Note that 1 acre=43560ft2.
*August 25, 2014*

**Science (Physics)**

Thank you!
*August 3, 2014*

**Science (Physics)**

I will next time but I really need help with these questions, any help would be appreciated.
*August 3, 2014*

**Physics **

Two resistors 10ohms and 5ohms are connected in parallel across a 15V battery. What is the potential difference across the 10ohms resistor. I do not need the answer just the formula and how to figure out the problem. Thanks.
*August 3, 2014*

**Science**

There are two set pieces in a theater sitting on platforms with wheels. One is a tree with a mass of 50 kg. It is moving at 3 m/s. The other is a fence with a mass of 30 kg. If the two set pieces have equal momentum, how fast is the fence moving? A. 3 m/s B. 5 m/s C. 30 m/s D...
*July 14, 2014*

**Chemistry**

Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more compli- cated, but this is a reasonable first approxima- tion.) The combustion of carbon is described by the equation C(s) + O2(g) −→ CO2(g) ∆H◦ = −394 kJ What is ...
*May 22, 2014*

**Chemistry**

Calculate the volume of NaOH 0.5 mol/L necessary to neutralize 300 mL of HCl 0.2 M. na= how do I calculate this? Ma= 0.2 M Va= 0.300 L nb= 0.5 mol Mb= 0.5 M Vb= ?
*May 13, 2014*

**language art pllz help**

A B C B B
*April 30, 2014*

**Chemistry**

HELP!! I'm doing an experiment to do with phosphorus and plant food and MgNH4P04 6H20 my air dry weight of MgNH4P04 6H20 was 1.31 g grams of P in plant food was .165 g % P in plant food is 13.87% % P205 equivalent to % P above is 63.02% % P 205 in 10-52-10 is 52% i then ...
*April 25, 2014*

**History**

Mark the statement if it describes Roman society during the time of Cincinnatus. A. Rome’s government was based on law in which many people had a voice. B. Rome was being surrounded and threatened by outside forces. C. People in Rome admired those who used their abilities...
*April 23, 2014*

**Chemistry**

Vitamin K is involved in normal blood clotting. When 1.05 g of vitamin K is dissolved in 25.0 g of camphor, the freezing point of the solution is lowered by 3.53 Â°C. The freezing point and Kf constant for camphor can be found here. Calculate the molar mass of ...
*March 26, 2014*

**Chemistry**

Given that the vapor pressure of water is 17.54 Torr at 20 Â°C, calculate the vapor-pressure lowering of aqueous solutions that are 1.90 m in (a) sucrose, C12H22O11, and (b) aluminum chloride. Assume 100% dissociation for electrolytes. I got .5799 Torr for sucrose, ...
*March 26, 2014*

**Math**

I forgot the - in the above answer that I gave. It should really be y+7=-2(x-2) y=-2x-3
*March 26, 2014*

**Math**

The key to perpendicular lines is that the slopes will multiply together to get negative one. Since your original slope is 0.5, your new slope will be -2. Passing through your stated points, the point-slope equation of the line will be: y-(y1)=m(x-(x1)) plug in your slope & ...
*March 26, 2014*

**Science**

Different climates and enviornments all together. A desert has very little water, so all the plants and animals are adpated to such conditions ex: cactus. What animals come to mind in the desert are mostly cold blooded reptiles. Forest ecosystems on the other hand, have just ...
*March 26, 2014*

**Science**

What did u make on this test
*March 5, 2014*

**Science~!**

It's b 1.faluse 2. B 3. A 4. A
*March 4, 2014*

**Art-plz check!!**

is kim right ???? someone answer me please i need this done in 3 mins??????
*February 13, 2014*

**Bronies**

What are bronies? I hear about it all the time. Does anybody know?
*February 11, 2014*

**unit rate**

482
*January 22, 2014*

**algebra 2 honors**

2x^2-12x+32=x^2 how would I solve this by factoring?
*January 5, 2014*

**algebra 2 honors**

2x^2-12x+32=x^2 how would I solve this by factoring?
*January 5, 2014*

**english**

is it possible to find evidence that could ever disprove a conspiracy theory? why/why not?
*November 15, 2013*

**algebra 2**

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)
*November 10, 2013*

**algebra 2**

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)
*November 10, 2013*

**math**

A traveler went 10 miles south, 7 miles east, 2 miles south, and 2 miles west. How many miles is the traveler from the start?
*November 7, 2013*

**science**

I don't know
*October 30, 2013*

**AP chemistry**

001 (part 1 of 2) 10.0 points A 1.37-gram sample of compound X (of MW 88.0 g/mol) was burned in a bomb calorime- ter containing 1700 g of water. A temperature rise of 0.95◦C was observed. ∆Erxn for this re- action is −475 kJ/mol of X. What is the heat ...
*October 27, 2013*

**physics**

n object is dropped from rest. What is the acceleration after 6 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/
*October 20, 2013*

**Math Explanation**

Because it helps it makes things easier for me it is nice to have something roll off my back
*October 15, 2013*

**social justice**

what are some of the social and economic consequences globally due to the shift to lifestyle branding?
*October 1, 2013*

**Math**

A total of 68 awards will be given to the soccer team. Each box holds 8 awards. How many awards are in the partially filled box?
*October 1, 2013*

**english**

what are your political, economic and autonomy goals?!
*September 24, 2013*

**bio 11**

must the steps in the scientific method always be followed in the same order? Explain.
*September 4, 2013*

**bio 11**

what is the only difference between a control set up & an experimental set up?
*September 4, 2013*

**8th grade algebra**

While on vacation a group can rent bikes and scooters by the week. They gett a reduced rental rate if they rent 5bikes for every two scooters rented. The reduced rate per bike is $15.50 amd the reduced rate per scooter is $160 a week. The sales tax on each rental is 12%. The ...
*August 18, 2013*

**8th grade algebra**

While on vacation a group can rent bikes and scooters by the week. They gett a reduced rental rate if they rent 5bikes for every two scooters rented. The reduced rate per bike is $15.50 amd the reduced rate per scooter is $160 a week. The sales tax on each rental is 12%. The ...
*August 18, 2013*

**socials 11**

why were provincial premiers opposed to the charter or rights and freedoms?
*August 2, 2013*

**Math**

How do i find surface area of a rectangular prism?
*July 30, 2013*

**socials 11**

what was pierre's laporte reasons for asking robert baroussa to save his life by meeting the demands of the FLQ?
*July 24, 2013*

**socials 11**

discuss the treatment of aboriginal people in Canada during the 20 century
*July 24, 2013*

**socials 11**

do you think that Canada is truly a bilingual country? explain.
*July 24, 2013*

**socials 11**

do you think that the Canadian Government should have the ability to suspend certain civil rights in "emergency" situations? explain.
*July 24, 2013*

**socials 11**

how come illegal immigrants who are entering Canada such a problem for Canada?
*July 23, 2013*

**socials 11**

what do you think Canada should do with the economic immigrants arriving off the coast?
*July 23, 2013*

**socials 11**

why was the issue of West Coast salmon such a controversial issue?
*July 23, 2013*

**socials 11**

explain what increased privatization of the healthcare system would entail, and list the pros & cons of such a system.
*July 23, 2013*

**socials 11**

why is health care a growing concern for Canada?
*July 23, 2013*

**socials 11**

what do you think is the best solution for Canada's current healthcare predicaments?
*July 23, 2013*

**socials 11 (health care in canada)**

why is health care a growing concern for Canadian citizens?
*July 22, 2013*

**socials 11 (health care in canada)**

explain what increased privatization of the healthcare would entail, and then list the pros and cons of such a system
*July 22, 2013*

**world geography**

They are frozen?
*July 22, 2013*

**Chemistry**

calculate the natural logarithm and reciprocal concentration at 0 seconds and NO2 concentration (M) of .8333 and at time 20 (seconds) and .4617 NO2 concentration (M)
*July 22, 2013*

**socials 11**

why did Trudeau lose popularity in the 1970s?
*July 21, 2013*

**socials 11**

why did OPEC raise the price of oil in 1972?
*July 21, 2013*

**socials 11**

why did canada's ties with cuba, in particular, represent a move away from adherence to american foreign policy?
*July 21, 2013*

**socials 11**

what did the automotive products agreement change between canada and the us?
*July 19, 2013*

**socials 11**

why was the expo 67 a significant moment for French-Canadians?
*July 18, 2013*

**socials 11**

why did tvs become so popular after the ww2?
*July 18, 2013*

**socials 11 (post war 1946-1980)**

what was the extent of Canada's involvement in the Marshall Plan?
*July 17, 2013*

**socials 11 (the beginning of the cold war)**

in what sense did the concept of MAD keep both sides from going to war?
*July 17, 2013*

**socials 11**

why was totalitarian needed for ww2?
*July 11, 2013*

**Chemistry**

Explain why the FeCl3-KCI-HCl solution was used as a reference solution. Suggest a procedure you could follow to determine whether it was necessary to use this solution as a reference or whether distilled water would have been just as satisfactory.
*July 10, 2013*

**socials 11**

explain how the clothing women wore during the 1920s was indicative of their changing role.
*July 9, 2013*

**socials 11**

what event in europe inspired the formation of some canadians trade unions?
*July 8, 2013*

**socials 11**

what event in europe inspired the formation of some canadians trade unions?
*July 8, 2013*

**socials 11**

world war 1 !
*July 7, 2013*

**socials 11**

what war-related issue affected French and English relations in Canada for years to come?
*July 7, 2013*

**socials 11**

explain why the issue of conscription helped to further divide English and French relations in Canada.
*July 7, 2013*

**math**

ok! thanks a lot.
*July 4, 2013*

**math**

but the answer should be $ 26. 65 !
*July 4, 2013*

**math **

The markup on a restaurant mean is 250%. A meal costs $7.25 to produce. How much will the customer be charged, after markup and 5% GST are applied?
*July 4, 2013*

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