Thursday

April 17, 2014

April 17, 2014

Total # Posts: 577

**physics grade 10 icse**

two balls of masses in ratio 1:2 are dropped from the same height find : a. the ratio between their velocities when they strike the ground and b. the ratio of the forces acting on them during motion

**Art - Help ASAP!!**

i checked the website but its not there

**Art - Help ASAP!!**

how many years does it take to finish the course sculpture at OCAD university??

**Need Math Help Please **

in probability why are tree diagrams more useful than to use tables ?? please explain to me in a paragraph so i understand completely and could you please show me an example where i would have to use the tree diagram, and why i couldnt use a table???

**Need math help please **

could someone please give me an example not an example using coins, marbles, spinner, like something different that would explain the difference b/w theoretical and experimental probability.

**Math Help**

could someone please give me an example not an example using coins, marbles, spinner, like something different that would explain the difference b/w theoretical and experimental probability. And please explain.

**Math Help **

in probability why are tree diagrams more useful than to use tables ?? please explain to me in a paragraph so i understand completely and could you please show me an example where i would have to use the tree diagram, and why i couldnt use a table???

**Math help understand **

Have world problem and I don't get it please explain step by step simplify and show me as many ways as possible cause one might be easier than other !! A bicycle travels at constant speed of 15km/hr. Bus starts 195km behind bicycle and catches up to bicycle in 3 hrs. What&...

**CHEMISTRY**

When 6.724 g of one of the hydrates of sodium sulfate (Na2SO4) was heated to drive off its water of hydration, the residue of anhydrous sodium sulfate has a mass of 2.964 g. What is the value of x in the formula for the hydrate, Na2SO4•xH2O?

**CHEMISTRY**

Thank you so much!

**CHEMISTRY**

A lawn fertilizer is rated as 6.50% nitrogen, meaning 6.50 g of N in 100 g of fertilizer. The nitrogen is present in the form of urea, (NH2)2CO. How many grams of urea are present in 100 g of the fertilizer to supply the rated amount of nitrogen?

**Calculus**

I need help finding the derivative of √3x/(x^2-4) at x=3

**Statistics in Psychology**

A researcher finds that the correlation between variable A and variable B is r= 5 1.20. She also finds that the correlation between variable C and variable B is r= 5 2.40. Which relationship is scientifically more useful and by how much?

**Statistics in Psychology**

What research steps must you go through to use the relationship between a person’s intelligence and grade average in high school so that, if you know a person’s IQ, you can more accurately predict the person’s grade average?

**INF 103**

Digital literacy is a skill that is important for: utilizing computers effectively. counting numbers reading digits. hacking computer information.

**Connexus, Civics, History**

Oh so you used to be a teacher?

**Connexus, Civics, History**

Isnt that what this websites for?

**Connexus, Civics, History**

Please some answer them for me T_T

**Connexus, Civics, History**

Help with civics "What are the Rights of the Accused"? 1. The Supreme Court ruled in re Gault that people... A. that are under arrest must be read their rights by law enforcement. B. who cannot afford an attorney must be provided one by the state. C. accused of crime...

**Statistics in Psychology**

Please help. Thank you in advance for your time. In an English class last semester, Foofy earned a 76 (x¯= 85, Sx= 10). Her friend, Bubbles, in a different class, earned a 60 (x¯= 50, Sx = 4). Should Foofy be bragging about how much better she did? Why?

**Statistics in Psychology**

Please help with this question, THANK YOU in advance. A line should be over the top of both X’s. In an English class last semester, Foofy earned a 76 (X = 85, Sx = 10). Her friend, Bubbles, in a different class, earned a 60 (X=50, Sx = 4). Should Foofy be bragging about h...

**Statistics in Psychology**

Please help me with both of these questions. THANK YOU in advance for your for you help. 13. For the data, 9 5 10 7 9 10 11 8 12 7 6 9 (a) Compute the z-score for the raw score of 10. (b) Compute the z-score for the raw score of 6. 14. For the data in question 13, find find th...

**Chemistry**

Write a balanced equation to describe the following reactions: a) C14H30 is cracked to produce ethene, hydrogen and one other compound b) C16H34 is cracked to produce ethene and propene in a 2:1 ratio and only one other compound Thanks:)

**How to do this problem fast**

8%. Because -> percentage change = new-old/old x 100 so 0.68/8.50 x100 Hope this helps :)

**math**

If the rectangles width is trippled and its length is doubled the perimeter of the new rectangle is 92 centimeter greater than the original perimeter what is the area of the original rectangle?

**math**

If the rectangles width is trippled and its length is doubled the perimeter of the new rectangle is 92 centimeter greater than the original perimeter what is the area of the original rectangle?

**calc and Vectors**

A wire 60 cm long is to be cut into two pieces. One of the pieces will be bent into the shape of a square and the other into the shape of an equilateral triangle. The wire is to be cut in order that the sum of the areas of the square and the triangle is to be a maximum. An equ...

**Calc and Vectors**

The owner of an orange grove estimates that 150 orange trees per acre will each yield on average 800 oranges per year. For each additional tree planted per acre the number of oranges produced by each tree decreases by 10 per year. How many trees should be planted per acre in o...

**Calculus and vectors**

A cylindrical tank is to have a capacity of 1000 m³. It is to fit into a foundry that is 12 m wide with a height of 11 m. The base of the tank will cost half as much as the top. The metal for the side of the tank will cost four fifths as much as the top. An equation that ...

**Math**

Fencing costs 29$ per meter what is the cost of fencing a rectangular swimming pool if the fenced area is to be 16 m long 9 m wide.

**geometry**

what is the algebraic rule for x=4,y=1;x=6,y=1;x=8,y=2;x=10,y=2;x=12,y=3;x=14,y=3;x=16,y=4;x=18,y=4...

**math**

Sherry is playing the integer game and is given a chance to discard a set of matching cards. Sherry determines that if she discards one set of cards her score will increase by 12. If she discards another set, then her score will decrease by eight. If her matching cards make up...

**us hist**

c is correct

**science**

Please help!!!!! 1. A dog is trained to sit and shake hands. These traits are most likely. (1 point) A. inherited B. not inherited C. not acquired D. innate 2. In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a...

**staistics, is it right?**

Find the mean, the median, and the mode for the following data. 21 21 22 22 22 26 34 Mean 335.1 rounded to 335, median 22, mode is 22 could someone tell me if I got this right?

**statistics**

Find the mean, the median, and the mode for the following data. 21 21 22 22 22 26 34 Mean 335.1 rounded to 335, median 22, mode is 22

**statistics**

I have to find mean, median and mode did I do this right? 21,21,22,22,22,26,34

**math geometry**

how can i prove in geometry proofs that something is a midpoint of a line? thanks

**english**

not sure but prepositional phrase with a gerund?

**english**

__present participial phrase __nominative absolute __appositive __past participial phrase __prepositional phrase with a gerund

**english**

By serving as a popcorn vendor sorry

**english**

What grammatical structure is the italicized portion of the sentence? By serving as a popcorn vendor, Don saw many good games. appositive?

**English**

Select the correct noun clause in the sentence below. Then choose the function of the noun clause. The detective asked me if I had heard any strange noises the night before. Noun clause: if I had heard any strange noises the night before. function of clause: direct object

**English**

Thank you once again.

**English**

Which of the following sentences does not have a subordinate adjective clause? ___The poem, which Peg wrote for me, was good enough to print. _x_He made some statements, and they had no foundation of fact. ___Gerry won a swimming pool trophy of which he is very proud.

**English**

What is a subordinate clause?

**English**

Thanks again. (:

**English**

1.adjective 4.adjective 5.noun ?

**English**

Choose the function of the italicized infinitive phrase. 1.May I have permission to use the car tonight? 2.He went to Europe to study architecture. 3.I want to go with you to the store. 4.Can you give me a place to put my things? 5.To help you is my greatest desire. 6.Meredith...

**English**

thank you!!!!

**English**

So 5. Subject? 6.Predicate noun?

**English**

What is the gerund phrase and noun function of the gerund in these sentences: 1.Brett earns his income by repairing cars. 2.I enjoy playing the piano. 3.Her favorite pastime is entertaining friends. 4.She is successful in mimicking others' voices. 5.He must like studying c...

**3rd grade Math**

If Beth has 28 feet of trim to use as edging on a rectangular blanket, what is the length and width of two blanket sizes she could make?

**science**

Need help with those same questions.. please help!!

**english**

An occurrence at Owl Creek bridge compare and contrast to After Twenty Years

**biology**

Explain how new species can originate without geographical barriers.

**Calculus**

Find the volume of the solid obtained by rotating the region under the graph of the function f(x) = (2)/(x+1) about the x-axis over the interval [0,3]

**Calculus **

Find the area of the shaded region bounded by y=7x and y=x(sqrt(22^2-x^2))

**Chemistry**

Carbon tetrachloride has an enthalpy of vaporization of 29.82kj/mol. If CCl4 has a normal boiling point of 350k, what is its vapor pressure at 273k? (R=8.31 J/molK)

**Chemistry**

What is the vapor pressure of CH4 at 1 atm and 298k?

**chemistry**

What is the vapor pressure of helium at 1 atm and 298 k?

**math**

find the critical points of h(t) = (t^2-4)^(1/3)

**math**

calculate the general antiderivative of f(x) = -19x^4 - 15x^3 + (20/x)

**Math**

limit as x approaches 9 of (8/(sqrt(x)-3)) - (48)(x-9)

**chemistry**

A 8.90-L container holds a mixture of two gases at 45 C. The partial pressures of gas A and gas B, respectively, are .294 atm and .860 atm. If .100 mol of a third gas is added with no change in volume or temperature, what will the total pressure become?

**chemistry**

if the partial pressure of the diatomic gas is .300 atm, what is the total pressure? 6 blue dots 5 orange dots 3 green dots consisting of 2 dots each (diatomic gas)

**chemistry**

O2 effuses at a rate that is _____ times that of Xe under the same conditions. rate 02/rate x2 = ?

**chemistry**

delta h= -5113.3

**chemistry**

for a particular isomer C8H18, the following reaction produces 5113.3 kj of heat per mole of C8H18 consumed under standard conditions c8h18(g) + 25/2 O2 (g) ---> 8co2(g) + 9h2o(g) what is the standard enthalpy of formation of this isomer of c8h18? o2= 0 co2(g)= -393.5 h2o(g...

**Chemistry**

Which of the following substances have a standard heat of formation of zero? O2 at 25.O degrees C and 1 atm Fe at 1200 degrees C C2H6 at standard conditions Cl2 at 2 atm

**Business Math**

March 31-21 (Date of note)=10 days remaining. Take the 60 days-10 (days remaining in march)=50-30 (days in April)=20 days So, the maturity date of the note is May 20th.

**Math**

I=PRT I=40,000*.14*25/360=$388.89 (interest) $15,000-388.89=$14,611.11 (amt. of partial payment left to reduce the principal) 40,000-14,611.11=$25,388.89 (adjusted principal balance) $25,388.89*.14*20/360=197.47 10,000-197.47=9802.53 25,388.89-9802.53=15,586.36 15,586.36*.14*2...

**chemistry**

For the following reaction in acidic solution. Cr2O7^2- + I- ---> Cr^3+ + IO3- Give the total balanced net ionic equation.

**chemistry**

For the following reaction in acidic solution. Cr2O7^2- + I- ---> Cr^3+ + IO3- give the balanced half reduction reaction. Indicate the oxidizing species.

**chemistry**

Sorry the equation is: Cr2O7^2- + I- ---> Cr^3+ + IO3^- (dont sure the balanced equation)

**chemistry**

0.125g of sodium dichromate is to be reacted wtih 0.025M potassium iodide. How many mLs of the potassium iodide solution will be needed. (Use your balanced equations above.)

**chemistry**

Using your 0.0100M oxalate solution and only the equipment and supplies listed below, describe how to prepare a 0.00025M solution of oxalate. Note, you are not allowed to add volumes with pipettes. (example, if you want 20mLs, you can not use a 10mL + 10mL addition as this ad...

**physics**

a flask contains helium gas at 11k. the flask is thermally isolated and the gas is allowed to escape slowly through a narrow tube until the pressure within the flask is 0.98 atm and the temperature is 4.2K. if the gas is ideal, find the initial pressure for the flask to be ent...

**science**

what is the probability of a right handed person and a left handed person having a heterozygous child? homozygous dominant? homozygous recessive?

**Probability & Statistics**

Charmaine is looking at the rental car prices for Get You There Rental Car Company. The cost is based on how many miles you plan to drive the rental car. Use the list of rental prices to answer the questions 1- 5. Miles Cost 200 $80 600 $120 1000 $160 1400 $200 1800 $320 1) De...

**Probability & Statistics**

Charmaine is looking at the rental car prices for Get You There Rental Car Company. The cost is based on how many miles you plan to drive the rental car. Use the list of rental prices to answer the questions 1- 5. Miles Cost 200 $80 600 $120 1000 $160 1400 $200 1800 $320 1) De...

**English**

THank you SO much

**English**

im using APA and also if i site my sources in my essay do i use parenthesis or quotation marks? And also if i take something from a website word to word do i use quotation around it? or parenthesis?

**English**

its not a question its more like a four page essay. Can you tell me if i'm using a website how should i reference it? should i write the name of the website or the topic?

**English**

Ms. Sue can i please have your email address I really need your help with my essay

**Math**

A container holds 12 red marbles, 10 blue marbles, and 14 green marbles. You will randomly select two marbles without replacement. -Fill in the probabilities on each branch of the tree diagram. Use the boxes with the fraction bars already provided. -Use the tree diagram to ans...

**LA**

D .

**LA**

jerry came to school incognito like superman in his clark kent glasses question; as used in the passage what does incogonito mean ? a. strength b. in a cape c. dressed formally D. disguised i pic C or D am i cerrect?

**lA**

yes im sorry i have misspelled that word

**lA**

the havasupai are ararian; they live off the summer crops they grow in the valley. .. .. what is the meaning of the word agrariam as is used in the sentence? A. farming the land to survive b . hunting south of the canyon c . herding animals such as deer d . making a livelihood...

**science**

Calculate the de Broglie wavelength of a 0.44 kg ball moving with a constant velocity of 26 m/s (about 60 mi/h).

**Intermidete Algebra**

A rectangle's length is twice its width and it's perimeter is 48m. Find the dimensions.

**math**

@steve Why is the base of the box 16-2x by 10-2x (where did the 2x come from?)

**math**

An open box is made from a rectangular piece of cardboard measuring 16 cm by 10cm. Four equal squares are to be cut from each corner and flaps folded up. Find the length of the side of the square which makes the volume of the box as large as possible. Find the largest volume

**Chemistry**

20 ml of 0.1 M acetic acid was mixed with 25 ml of 0.1 M Sodium Acetate. The pH was measured to be 4.43. 5 ml of 0.1 M Sodium Hydroxide was added to the buffer and the pH was measured to be 4.60. Calculate the pH of the buffer before and after the addition of NaOH.

**Chemistry**

1 g of acid was mixed with 120 ml of distilled water and the solution was filtered into a clean dry beaker. A 25 ml aliquot of this solution was titrated with 0.1120 M NaOH. The pH of the acid was recorded to be 4.42. Calculate the initial concentration of the weak acid and de...

**Math**

A gasoline tank contains 500 liters of gasoline. By the end of each day, 70% of the gasoline remains. When will there be less than 100 liters in the tank?

**Math**

Find the first five terms of the sequence using the recursive rule: a1 = 2/3, and An = 5a N-1

**Chemistry**

A 30.0-ml sample of 0.165 M propanoic acid is titrated with 0.300 M KOH. What is the pH at 5 ml of added base, at 10 ml of added base?

**chemistry**

Calculate whether or not a precipitate will form if 1.40 mL of 0.62 M NH3 are added to 4.4 L of 1.0 10-3 M FeSO4.

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