Monday

July 6, 2015

July 6, 2015

Total # Posts: 1,674

**experiment physics**

ha! lab report eh?
*June 30, 2015*

**chemistry**

What volume of hydrogen gas at standard temperature and pressure can be collected from the electrolysis of water using a current of 100mA for a period of 3 hours? I know that the answer is 0.125 L but I don't know how to approach the problem. I multiplied 100*10^-3 by 3600...
*June 10, 2015*

**MS. SUE?? MATH (8TH) CONNECTIONS**

I have 3 questions. Multiply the polynomials. -2r(8r+5) a. -16r^2 + 5 b. -16r^2 + 10 c. -16r^2- 10r d. -16r^2 - 10 ^2a(a^2 + 4a) a. 2a^2 + 6a^2 b. 2a^3 + 8a^2 c. 2a + 6a d. 2a^3 + 6a^2 (3y)(3y-2) a. 9y^2 - 6 b. 9y^2 + 5y c. 9y^2 + 1 d. 9y^2 - 6y
*June 9, 2015*

**Pre-Algebra**

If y varies directly with x, find the constant of variation with x = 4 and y = -24 If y varies inversely with x, find the constant of variation with x=5 and y = 10 If y varies directly with x, and y = 35 when x = 5 , find x when y = -7 If y varies directly with x, and y = -12 ...
*June 7, 2015*

**World History**

Now the questions are pretty clear. I just don't know what to write for each of them. Can you help me?
*June 7, 2015*

**World History**

Draw Inferences What events influenced the growth of environmental movement in the United States? Why did the environmental movement attract many of the same people who had participated in other movements? Do you think the environmental movement has had a positive or negative ...
*June 7, 2015*

**World History**

What can we learn about the limited freedoms during the McCarthy era? I need to write 5 - 10 sentences. I don't understand the topic very well so could you help me understand? Is there anything that I can read that will help me with this essay question?
*June 6, 2015*

**World History**

Thanks so much! I understand much better now!
*June 6, 2015*

**World History**

I need help understanding the question, and its an essay question that is worth 5 points so how many sentences should I have?
*June 6, 2015*

**World History**

2.) During the Cold War, people were afraid of communists, both outside and inside the United States. The Red Scare and McCarthyism that grew out of these fears was damaging to the American way of life. During the McCarthy years, many of the freedoms guaranteed in the Bill of ...
*June 6, 2015*

**World History**

Now the question is much easier! Thank you!
*June 6, 2015*

**World History**

I need help understanding the question, and its an essay question that is worth 5 points so how many sentences should I have?
*June 6, 2015*

**World History**

1.) After September 2, 1949, both the United States and the Soviet Union had atomic weapons that they could use in a war against each other. In a paragraph, analyze how this fact shaped the progress of the Cold War and the relationship between the two countries. In your ...
*June 6, 2015*

**language arts**

which of the following passages from the novel supports the idea that the rules of the community are strictly followed? I think it is c
*May 30, 2015*

**Algebra**

What property can I use to simplify these expressions? 8 * 2 + 3 10 * 3 - 4 by properties I mean Associative, Commutative, Distributive etc.
*May 28, 2015*

**Algebra**

Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to explain the process. Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply 8*6 which is 48.
*May 28, 2015*

**Algebra**

State whether the equation is true, false, or an open sentence. Show your work. 3(2 + -8) = 3(-6 + 12) x + 5 = 22
*May 28, 2015*

**Algebra**

Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to include what properties (associative, distributive etc.) I used to simplify the problems.
*May 28, 2015*

**Algebra**

Together, Larry and Moe scored less than 25 points in the basketball game. If Larry scored 8 points, how many points P did Moe score? I need help finding the answer/understanding the question.
*May 28, 2015*

**Algebra**

What property is shown? 5 + (8 + 7) = (5 + 8) + 7 I think its the commutative property of addition but I'm not sure...
*May 28, 2015*

**Algebra**

On a shopping trip, your sister spends $50 for a pair of jeans, $12 for a pack of socks, and $215 on a pair of tennis shoes. Using the Associative Property of Addition, write the total amount spent on this trip in two different ways. I need help finding the answer.
*May 28, 2015*

**Algebra**

Imagine you owe someone $20. Represent this with an integer. My answer: -20 Imagine someone owes you $50. Represent this with an integer. My answer: 50 Are my answers correct?
*May 28, 2015*

**Algebra**

Use the order of operations to simplify SHOW ALL WORK 13+3*6/9-7 18-6/3+12*3 the "/" sign is a division symbol
*May 28, 2015*

**Algebra**

Mr. K wants to build a pen in his yard for his dog. He buys 1200 ft of fencing. He concludes that he can only build a rectangle with sides of 400ft and 200ft. Is he correct? If he is incorrect give a counter example. I need help finding the answer.
*May 28, 2015*

**Algebra**

10 13 total 35?
*May 28, 2015*

**Algebra**

A tower of blocks has 1 block in the top row, 4 blocks in the next row, 7 blocks in the next row, an so on. There are 5 rows in all. How many blocks are in the tower? I need help finding the answer.
*May 28, 2015*

**Algebra**

Thanks
*May 28, 2015*

**Algebra**

30 miles?
*May 28, 2015*

**Algebra**

Jed decided he needs to start exercising more. On Monday, he runs 2 miles. on Tuesday, he runs 4 miles. On Wedsnesday he runs six miles. He continues with this pattern each day for five days, Monday through Friday. How many total miles did he run in the first five days? I need...
*May 28, 2015*

**L A/The Giver**

So what did you get?
*May 20, 2015*

**chemistry**

In which case will the equilibrium constant (K) be less than 1 at 298 K? (a) DeltaH = 4.55 kJ/mol ,deltaS = 28.0 J/mol K (b) delta H = - 4.55 kJ/mol ,deltaS = 28.0 J/mol K (c)deltaH = 4.55 kJ/mol ,deltaS= - 28.0 J/mol K (d) both (a) and (b) I know the answer is c but I don'...
*May 17, 2015*

**math**

Multiply the following polynomials. 1. -2r(8r+5) A. -16r^2+5 B. -16r^2+10 C. -16r^2-10r D. -16r^2-10 2. 2a(a^2+4a) A. 2a^2+6a^2 B. 2a^3+8a^2 C. 2a+6a D. 2a^3+6a^2 3. (3y)(3y-2) A. 9y^2-6 B. 9y^2+5y C. 9y^2+1 D. 9y^2-6y 1.B 2.A 3.B
*May 14, 2015*

**math**

!😏
*May 14, 2015*

**math**

I so did not mean D I meant C!!!! Because they both mean 49. I forgot d was none of them.
*May 14, 2015*

**math**

D!!!! Thanks😜
*May 14, 2015*

**math**

Replace the___with<,>, or = to make a true statement. 7^4\7^2_______49 A. < B. > C. = D. None if the above A?
*May 14, 2015*

**math**

Thank you your awesome😊😊😊😊😊
*May 14, 2015*

**math**

2.c
*May 14, 2015*

**math**

Simplify each expression. 4^4\4^6 A. -16 B. 16 C. 1\16 D. -1\6 2. 5^0 A. 0 B. 5 C. 1 D. -5 1. C. 2. A
*May 14, 2015*

**history! please help! :)**

i can't understand the map. can you tell me which ones are in the andes?
*May 13, 2015*

**history! please help! :)**

1. Andean countries in South America include: *Ecuador and Bolivia *Peru and Chile *Ecuador and Columbia *Venezuela and Brazil I chose all except Peru and Chile. 2. Which of the following statements about the ancestry of most of the people of Central America is most accurate? ...
*May 13, 2015*

**SCIENCE: CONNEXUS HELP!**

Never put your from connexus I've been seeing that people who are from there they won't answer because your school would consider this cheating. Post under different name and just put what help you need like math, s.s.etc.
*May 13, 2015*

**LA the giver chapters 1-2**

just took the quiz and all of your answers are correct
*May 13, 2015*

**Language arts**

DM, you're not even supposed to give answers on this site. Just because someone won't give you answers doesn't make them "stupid", it just makes you seem lazy.
*May 13, 2015*

**algebra**

well if they posted the right graph it just start at (y0'x0) and end at (y6'x3) but i need help with this aswell if some can thanks
*May 12, 2015*

**chemistry**

Calculate the concentrations of all ions after 50.0 mL of a 0.100 M AgNO3 solution is mixed with 100.0 mL of a 1.00 M Na2SO4 solution.For Ag2SO4 Ksp = 1.2 x 10-5 Do I first do MiVi=MfVf and then using the two concentrations I use ksp value? I'm just so confused.
*April 29, 2015*

**Math**

1. The towns population increased from 80,000 to 90,000 in ten years. What was the percent of increase? I didn't understand this one. 2. A $15 item on sale for $12 is marked down what percent? 20% 3. If Jenna buys and item for 40% off the regular price, will she pay more ...
*April 27, 2015*

**math**

I want to check my answers 1. The town population increased from 80,000 to 90,000 in ten years. What was The percent of increase? 2. A $15 item on sale for $12 is marked down what percent 3. If Jenna buys an item for 40% off the regular price will he pay more or less than half...
*April 27, 2015*

**AP Calc B/C**

It also says assume a constant rate of increase.
*April 27, 2015*

**AP Calc B/C**

If the rate of change of the population is proportional to the population and the population of a country doubled in 35 years, what is its yearly rate of increase? I don't remember how to do this at all, so I really don't know how to start the problem.
*April 27, 2015*

**English?**

tea bag maybe
*April 25, 2015*

**Math**

Thanks.
*April 24, 2015*

**Math**

1.You roll a number cube numbered one to six 12 times. P(5) = two over three. What type of probability is illustrated and why? (1 point) experimental; the result is based on the number of possible outcomes experimental; the result is found by repeating an experiment ...
*April 24, 2015*

**Math - Probability **

A spinner is divided into 11 equal sections numbered from 0 to 10. You spin the spinner once. What is P(even)? a. 3/5 b. 1/2 c. 5/11 d. 6/11
*April 23, 2015*

**Art**

A D B if you goto connections academy
*April 22, 2015*

**chemistry**

How many milliliters of a 0.250 M acetic acid solution must be added to 50.0 mL of a 0.750 M NaOH solution to produce a buffer solution with pH = 4.500 ? The pH is given by which we can calculate the concentration of [H+] How do we approach the problem from there?
*April 22, 2015*

**Math**

Is it 81?
*April 22, 2015*

**Math**

Is it 81?
*April 22, 2015*

**Math**

A fence surrounds a square plot of land. The area is 324 yd 2. Find the length of each side. Use the Systematic Guess and Check method. What I already know: It is a square shape. And all squares have equal sides.
*April 22, 2015*

**Social Studies**

1. ) At the height of Topa Inca's rule, how many people lived in the Incan Empire? a. ) 100,000 b. ) 2 million c. ) 12 million d. ) 200 million 2. ) Like many modern-day countries, Incan nobles conducted a ____ so that people could be taxed. a. ) competition b. ) research ...
*April 19, 2015*

**Science**

which of the following would have the greatest force? •an object with low mass accelerating slowly •an object with low mass accelerating quickly •an object with high mass accelerating quickly •an object with high mass accelerating slowly (and yes i go to to...
*April 17, 2015*

**Math**

Take a four digit number (abcd) and repeat it to make an eight digit number (abcdabcd). This eight-digit number always has at least three different prime factors, unless you start with a certain four-digit number. Which number is it?
*April 15, 2015*

**angles**

Abc is 71. and dbc is 45. then what is abd
*April 15, 2015*

**Pre Algebra Probability**

^ O_O WOW
*April 13, 2015*

**Art**

Yeah, cotton
*April 8, 2015*

**Art**

Yes, the answer is C.
*April 3, 2015*

**Math**

Help, Divide 50 by half, and add 20. I do not understand.
*April 2, 2015*

**chemistry**

You find the Ka of your unknown acid is 6.3x10 -5 . If you are being asked to make a buffer at pH 4.00, what is the appropriate ratio of A- to HA to be combined in your flask?
*March 31, 2015*

**chemistry**

You measure the pH of a 0.50 M unknown acid solution using a pH meter and it is found to be 1.74. What is Ka for the acid? I know ph=-log{H+} Where do I go from here?
*March 31, 2015*

**science**

What is the momentum of a two-particle sys- tem composed of a 1300 kg car moving east at 60 m/s and a second 1500 kg car moving west at 95 m/s? Let east be the positive direction. Answer in units of kg · m/s.
*March 29, 2015*

**Math**

3.8?
*March 27, 2015*

**Math**

3. A rectangular prism has a width of 92 ft and a volume of 240 ft3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary. (1 point) 3.8 ft3 60 ft3 15 ft3 10.4 ft3 Please help me work this out! I'm not sure how to do this
*March 27, 2015*

**Math**

what was the answer?
*March 24, 2015*

**History**

Vaguely
*March 23, 2015*

**History**

Henry Clay: What did they say about their hopes for the future of the United States? How did they work to help change the United States? How did they react to key events happening in the United States? Were there any key events in each person’s life that shaped their ...
*March 23, 2015*

**chem**

. Antimony pentachloride decomposes according to the following equation. SbCl5 (g) → SbCl3 (g) + Cl2 (g) Suppose that 10.0 g of antimony pentachloride is placed in a 5.00 L container and allowed to establish equilibrium. Calculate the concentration of all species at ...
*March 20, 2015*

**Math**

Oh sorry I forgot to put the key and the formatting kind've screwed up let me fix that. Doctor 1 Doctor 2 | 3 | 5 9 2 0 | 2 | 0 0 2 3 6 8 7 5 | 1 | 3 7 9 7 3 2 1 1| 0 | 2 2 3 9 Key = 5|1 = 15 1|3 = 13 E.G 5|1|3 (15, 13)
*March 19, 2015*

**Math**

the back-to-back stem-and-leaf plot below shows the ages of patients seen by two doctors in a family clinic one day. what is the difference between the age of the oldest patient seen by doctor 1 and the age of the oldest patient seen by doctor 2. AGE OF DOCTORS PATIENTS Doctor...
*March 19, 2015*

**Algebra**

1.A right triangle has leg of b of length 7 and a hypotenuse of length 11. What is a length of the other leg, a? Round to the nearest tenth if necessary. (1 point) A. 2.0 B. 8.5 C. 13.0 D. 9.6 2. Find the length of a line segment CD with endpoint C at (-3,1) and endpoint D at...
*March 19, 2015*

**maths**

Let's say the Purse is a variable like P P + P + 18.20 = 98 2P = 79.80 (Divide that into two) = 39.90 Answer: P = 39.90
*March 19, 2015*

**chemistry**

thank you
*March 15, 2015*

**chemistry **

An aqueous solution contains 64g of ethanol( C2H5OH) in 122 grams of solution. The mole fraction of ethanol is:
*March 15, 2015*

**Math**

Don't answer this anymore.... I got it
*March 14, 2015*

**Math**

Find the 10th term of a nonconstant arithmetic sequence whose 1st term is 3 with the 1st, 4th, and 13th term forming a geometric sequence. I've tried doing it differently everytime, but I always come to a dead end..
*March 14, 2015*

**algebra2**

(x-5)^1/3=2 then you raise 2 to the 3rd power add 5 and voila...x=13
*March 14, 2015*

**algebra2**

X=13
*March 14, 2015*

**CHEMISTRY HELPPPP!!!!!!!!!**

Consider the decomposition of NH3 (g). 2 NH3 (g) → N2 (g) + 3 H2 (g) The reaction is catalyzed on a surface of either tungsten or osmium. The activation energies for the catalyzed and uncatalyzed reactions are given below. W Ea = 163 kJ/mol Os Ea = 197 kJ/mol No catalyst...
*March 11, 2015*

**Health**

1. D 2. B 3. D 4. False 5. D
*March 11, 2015*

**Statistics**

Shopping Outlet A shopping outlet estimates the probability distribution of the number of stores shoppers actually enter as shown in the table below. x 0 1 2 3 4 p(x) 0.05 0.35 0.25 0.20 0.15 What is the probability that shoppers are just window shopping and not entering any ...
*March 11, 2015*

**Chemistry**

D=PM/RT Pressure= 1 atm R= constant value (Use google) T= 273K For M.M of xenon use periodic table
*March 10, 2015*

**Chemistry**

PV=nRT T=PV/nR
*March 10, 2015*

**chemistry**

PV=nRT Convert grams into moles.(1/32+12) Temperature must be in Kelvin (273K) Pressure must be in atm. And R is a constant value (Google it) so V=nRT/P
*March 10, 2015*

**Chemistry**

P=nRT/V
*March 10, 2015*

**Chemistry**

A student mixes 5.0 mL of 0.00200 M Fe(NO3)3 with 5.0 mL 0.00200 KSCN. She finds that the concentration of FeSCN2+ in the equilibrium mixture is 0.000125 M. Follow these steps to determine the corresponding experimental value of Kc for the reaction of Fe3+ and SCN– to ...
*March 10, 2015*

**arabic!!!**

3. مَا .......... ياَ أَخِي ؟ إِسْمِي سَالِم أ. إِسْمُكِ &#...
*March 7, 2015*

**career**

kers. They like accomplishing their work step-by-step and are good record keepers. a. conventional* b. enterprising c. social d. realistic
*March 6, 2015*

**P.E.**

About 80% of infections disease is spread by hand contact. True* False
*March 5, 2015*

**Art**

My answers: 1.b 2.d 3.d 4.c 5.d
*March 2, 2015*

**Art**

During which time period were artists keenly interested in using the golden ratio in their paintings? A.Baroque Period B.Oriental Period C.Futuristic Period D.Renaissance Period When the Greeks built the Parthenon its dimensions nearly matched the golden ratio which is the ...
*March 2, 2015*