Wednesday

March 4, 2015

March 4, 2015

Total # Posts: 1,204

**Chemistry **

a 100 g sample of ice at -15 degrees celsius is heated until it is converted to water vapour at 120 degrees celsius what is the energy change?
*February 25, 2015*

**Math Check**

Hi! Can someone check this for me? Thanks! Question: Determine if v and w are equal If v = Ray AB and w = Ray CD, where A (23, 11), B (10, 15), C (13, 15), and D (0, 11. (True or False) My answer: False
*February 24, 2015*

**Math Work**

I know that I'm using the Law of Cosines, but I'm confused on how to solve. I have to also round my answers to the nearest tenth for degrees and to the nearest hundredth for sides Given: A= 55 degrees b=3 c=10 Find: a= B= C=
*February 24, 2015*

**Finance**

Calculate, to the nearest cent, the future value FV of an investment of $10,000 at the stated interest rate after the stated amount of time. HINT [See Example 1.] 5% per year, compounded daily (assume 365 days/year), after 11 years work:10,000(1+0.05/365)^(365)(11)=17331.87 ...
*February 24, 2015*

**Chemistry**

I honestly have no idea how to do this. Could you show me the first part step by step
*February 19, 2015*

**math**

Davida bought a pair of earrings, each in the shape of an isosceles triangle with equal side lengths of 24 mm and a base length of 16 mm. She used one earring to make another pair of earrings, similar in shape, with the base length equal to 11 mm. What is the length of the ...
*February 9, 2015*

**Math- Calculus**

I need help with these problems, I cannot find a similar example to help me in the book: 1. Find lim x->infinity (e^(-2x) + sin x). 2. Find the derivative of sqrt(9-x) using the limit process. 3. Find lim x-> -infinity (x + sqrt(x^2 + 2x)). 4. Show that the equation e^x...
*February 9, 2015*

**Algebra**

Every sack of sugar has the same weight. Every sack of flour has the same weight, but not necessarily the same as the weight of the sacks of sugar. Suppose that three sacks of sugar together with four sacks of flour weighs no more than 50 pounds, and that the weight of two ...
*February 7, 2015*

**Physics **

An Earth satellite moves in a circular orbit 946 km above Earth's surface with a period of 103.8 min. What are (a) the speed and (b) the magnitude of the centripetal acceleration of the satellite? I got an answer of 7388.897 m/s for part a, but I'm stuck on part b
*February 2, 2015*

**Calculus**

Typo: 1.) Find the equation of the line that is tangent to the graph of y=x^3 at x=1.
*January 25, 2015*

**Calculus**

1.) Find the equation of the line that is tangent to the graph of y-y^3 at x=1. 2.) lim x->0 ((sin x*cos 2x)/3x) 3.) Show, using the squeeze theorem, that the limit of Xe^(sin 1/x) as x->0 is 0.
*January 25, 2015*

**Physics**

How would Ion Propulsion affect the cpst of spaceflight? Or How much does ion thrusters/ ion propulsion cost? I have been googling this for an hour and have yet discovered a answer. Help ??
*January 11, 2015*

**Math (TRIG)**

Please help me set up these problems. 1.) Find an equivalent equation in rectangular coordinates. r(1 - 2 cos θ) = 1 2.) Find a rectangular equation for the plane curve defined by the parametric equations. x = sec t, y = tan 3.) A projectile is fired with an initial ...
*December 8, 2014*

**Math check my answer please!**

Which expression is equivalent to 4x4x4x4x4x4x4x4? a. 4 x 8 b. 8^4 c. 8x8 d. 4^8 I think D.
*December 3, 2014*

**calculus, help!**

Evaluate the definite integral: int_{1}^{e^9} \frac{dx}{x \sqrt{\ln x}} = i gt my answer as 1^(e^9) but it's saying it's wrong
*December 1, 2014*

**Calculus**

it saying -8 isn't the number
*December 1, 2014*

**Calculus**

consider the function f(x) = (x if x<1 (1/x if x>or equal to 1 Evaluate the definite integral: int_{-2}^{3} f(x)\,dx =
*December 1, 2014*

**Math**

I was trying to find the Integral of those functions but it's saying that my answer is incorrect
*December 1, 2014*

**Math**

consider the function f(x) = (x if x<1 and 1/x if x>or equal to 1 Evaluate the definite integral: int_{-2}^{3} f(x)\,dx =
*December 1, 2014*

**CHEM**

1.) What is the correct net cell reaction for the electrochemical cell diagramed below? Ni(s) ∣ Ni2+(aq) || Ag+(aq) ∣ Ag(s) a.) Ag+(aq) + Ni(s) ---> Ag(s) + Ni2+(aq) b.) Ag(s) + Ni2+(aq) ---> Ag+(aq) + Ni(s) c.) 2Ag+(aq) + Ni(s) ---> 2 Ag(s) + Ni2+(aq) d...
*November 30, 2014*

**chemistry**

how many moles of Kl are present in 500 ml of a 0.2 M solution?
*November 25, 2014*

**Trig**

Thank you Steve.
*November 23, 2014*

**Trig**

Does this result in no triangle, 1 or 2 triangles? If so, then solve. B= 88 degrees, b= 4 and a=23. I know that A= (sin 88)(23)/(4)= A=5.74 degrees C= 180-5.74-88= C=86.26 degrees c=(sin86.26)(4)/(sin 88)= c=3.99 My question is how do you know if it's 0,1, or 2 triangles. ...
*November 23, 2014*

**Math**

UPDATED, I FIGURED IT OUT.
*November 22, 2014*

**Math**

I also need help with Find the component form of v if absolute value of v=2 and the angle it makes with the x-axis is 30 degrees. I cannot find a book example. help me.
*November 22, 2014*

**Math**

Find the angle between the vectors u and v if u=<-4,3> and v=<-3,2>, and Round answer to two decimal places. I found that it is (12*sqrt13)/65, my point of confusion is how do I find the angle?
*November 22, 2014*

**Math**

The tank is 1/2 full of water. The. A spherical wrecking ball with radius of 2ft is dropped into the tank. How far will the water level rise once the sphere is completely submerged? I cant figure it out. I've been trying for two days now. And its due..
*November 16, 2014*

**Liberal Arts 1**

In a class of 50 students, 26 are Democrats, 13 are business majors, and 3 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.
*November 15, 2014*

**Statistics**

It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs
*November 11, 2014*

**Math**

A survey carried out on 40 students about when they did their homework over the weekend F=(homework done on friday) S=(homework done on saturday/Sunday ) n(f)=20,n(s)=29 How many did both days ?
*November 9, 2014*

**Physics**

yes i used the atwood thing, but when i formulated the expression it came out to be a = g*delta mass/ total mass... does that make a difference?
*October 30, 2014*

**Physics**

I'm supposed to to calculate an experimental value for the acceleration of gravity from the slope of an acceleration vs. delta mass graph... also i'm supposed to find the percent error (to the normal acceleration of gravity of 9.8).. the slope is .442 i'm not sure ...
*October 30, 2014*

**Math Help Please! ASAP!**

Solve each inequality 1. y+5>7 y<2 y<12**** y>2 y>12 2. p+12>9 p>21 p>3 p>-21 p>-3**** Are my answers correct?
*October 29, 2014*

**Algebra**

Translate this phrase into an algebraic expression. 7 increased by twice Malik's savings. Use the variable m to represent Malik's savings.
*October 27, 2014*

**math**

staples = s chalk = c c + 2s = 10 3c + 2s = 18 -c-2s = -10 3c + 2s = 18 2c = 8 c = 4 s = 3 c + s 4 + 3 = 7 The total cost $7.
*October 27, 2014*

**Math**

Mr. and Mrs. Ogrodnik want to list their house at a price that will net them a minimum of $320,000 after a real estate commission of 5.5% of the selling price. Rounded to the nearest $100, what is the lowest offer they could accept on their home?
*October 27, 2014*

**Math algebra**

its 45m from the center of a circular field to the inside edge of the track surrounding it. the distance from the center of the field to the outside edge is 55m. find the circumference of each edge.
*October 26, 2014*

**Social Studies**

1. Which of the following crops required fields that could be flooded with water? A. squash B. rice*** C. corn D. silk
*October 22, 2014*

**Math**

Does this sound right: X = 2/3x * 3/5x * 3/4x * 5/6x + 15 X = 6/15 * 3/4 = 18/60 * 5/7 = 90/360 = 1/4 If 1/4 = $15 X would equal $60 original amount.
*October 22, 2014*

**Math**

Shawn goes to store and spends 1/3 of money on books. He spends 2/5 of the remaining money on games. He spends 1/4 of the remaining money on a DVD. He spends 1/6 of remaining money on a candy bar. He has $15 left. How much money did Shawn have originally?
*October 22, 2014*

**Math**

In a group of 22 boys, 13 play basketball and 15 play football. 3 of the boys play neither. how many play both ?
*October 20, 2014*

**Microbiology**

"people with takahara's disease don't produce catalase. Although often asymptomatic, this condition can lead to recurrent oral infections by peroxide-generating bacteria. How would you diagnose a catalase deficiency?" Would the answer be to put hydrogen ...
*October 17, 2014*

**algebra**

a cyclist rides her bike at the speed of 18 kilometers per hour what is this rate in meters per second how many meters will the cyclist travel in 2 seconds
*October 17, 2014*

**Math**

Mrs. Daniel pays $324 for a handbag and 3 pairs of shoes. The handbag cost half as much as the 3 pairs of shoes combined. Find the cost of the hand bag.
*October 14, 2014*

**Foundations and Pre-Calculus Math 10**

Find the radius of a cone with a height of 3m and a volume of 30m cubed. So far I have 90m cubed / 3m = pi(r^)3m/3m. Then I get stuck. Help! I'm really bad at math. ):
*October 14, 2014*

**Math (Algebra 2)**

A population of flies grows according to the function p(x) = 2(4)x, where x is measured in weeks. A local spider has set up shop and consumes flies according to the function s(x) = 2x + 5. What is the population of flies after two weeks with the introduced spider? 15 flies 23 ...
*October 8, 2014*

**Math**

What is the linear approximation of the square root of 8.9? Must be accurate to the fifth decimal place. I have tried everything it seems like yet cannot get the right answer.
*October 5, 2014*

**Social Studies**

Which of the following is NOT something that would describe Georgia's first legislature? A. Some members were elected, while other were appointed by the king. B. Men and Women served as members. C. It had an upper and lower house. D. Land ownership was necessary to be ...
*October 5, 2014*

**Social Studies**

Which of the following groups of new settlers in Georgia was pacifits? A. Salzburgers B. Highlands Scots C. Moravians D. Methodists I think C?
*October 5, 2014*

**Social Studies**

Which of the following is a positive event of the trustee period? A. defense against Spain B. profitable trade with the Indians C. building houses and public buildings D. All of the Above I think D?
*October 5, 2014*

**Social Studies**

Which of the following was the main focus of Georgians during the trustee period? A. buliding churches B. survival C. making roads D. building schools I'm not sure but I'm going to go with B or A?
*October 5, 2014*

**Social Studies**

What was one thing that the Salzburgers established that the other settlers did not? A. Hospital B. School System C. trading post D. tavern I think C??
*October 5, 2014*

**algebra2/ trig**

The figure at the right shows three circular pipes all with 12inch diameters the have been strapped together by a metal band.What is the lenght of the band? I don't even know where to start , please help?
*October 1, 2014*

**algb**

Z the Intergalactic Candy Store for $1.75. Jeejuu paid $1.88 and got 4 xylobars and 1 yackity. How much Dado pay for 1 xylobar and 2 yackities?imak bought 3 xylobars and 5 yackities from .....Write a system of equations. Then solve the equations using the methods: substitution...
*October 1, 2014*

**Algebra**

A building is 2ft from a 9ft fence that surrounds the property. A worker wants to wash a window in the building 13ft from the ground. he plans to place a ladder over the fence so it rests against the building. he decides he should place the ladder 8ft from the fence for ...
*September 27, 2014*

**math**

assembly line worker at robs bicycle factory at the sea to bicycle at a rate of 2 seats in 11 minutes. Write a proportion relating to the number of seats s to the number of minutes m at this rate how long will it take to add 16 seats? 19 seats?
*September 24, 2014*

**math**

For every girl taking classes at a Martin martial arts school there are 3 boys who are taking classes at the school. If there a 236 students taking the classes write and solve a proportion to predict the number of boys taking classes at the school?
*September 24, 2014*

**Technology**

I did but didn't find the answer but I kind of think its B? Is that right?
*September 23, 2014*

**Technology **

1. The purpose of font formatting within a search log is to indenify key words, important information, and A. supporting evidence B. Boolean Operators C. credible sources D. search paramenters I think D?
*September 23, 2014*

**Social Studies**

Which of the following reasons made Oglethorpe recruit the Highland Scots? A. their clan colors B. The were good soldiers and fighters C. The knew how to produce silk D. They brought stronger cattle with them Is it C?
*September 22, 2014*

**Math**

the length of a living room floor in a scale drawing is 8 inches the actual length is 20 feet what is the scale
*September 21, 2014*

**math**

The manager turns the restaurants two neon signs on at the same time both signs blink as theyaare turned on. One sign blinks every 9 seconds and one sign blinks every firfteen seconds. How many seconds will they both blink together again?
*September 18, 2014*

**Social Studies Please Help Mrs. Sue**

Which of the following reasons made Oglethorpe recruit the Highland Scots? A. their clan colors B. They were good soldiers and fighters C. They knew how to produce silk D. They brought stronger cattle with them I think D?? Not sure
*September 17, 2014*

**Social Studies Help please Mrs. Sue**

Umm Brianna??? She wasn't talking to you?
*September 17, 2014*

**Social Studies Help please Mrs. Sue**

Which of the following is Not something that the tree laws enacted by the trustees covered? A. rum and other spirits B. slavery C. food crops D. trade with the Indians I think A and B?? Confusing
*September 17, 2014*

**Social Studies Help Please Mrs. Sue**

Thanks :)
*September 17, 2014*

**Social Studies Help Please Mrs. Sue**

Which of the following actions of the trustees did the malcontents dislike? A. Women were not allowed to inherit property B. The largest land grants were limited to 500 acres C. Rum was banned D. All of the Above I think D?
*September 17, 2014*

**Social Studies Help Please Mrs. Sue**

Ok :)
*September 17, 2014*

**Social Studies Help Please Mrs. Sue**

What was the one product that the Salazburgers had some success with in Georgia that other settlers did not? A. Squash B. Rice C. corn D. Silk Is it A? I'm not sure
*September 17, 2014*

**Social Studies**

Is it D?
*September 17, 2014*

**Social Studies**

I think C or D?
*September 17, 2014*

**Social Studies**

Which of the following was a contribution of Tomochichi to the success of the Georgia colony? A. He kept peace between british and the creek Indians B. He had a cure for disease caused by the mosquitoes C. He kept most of the land that Oglethorpe wanted for the settlement D. ...
*September 17, 2014*

**Social Studies**

Thanks :)
*September 17, 2014*

**Social Studies**

Which of the following would describe John and Mary Musgrove? A. They owned a trading post close to the early Georgia settlement. B. The knew both the English and Indian Languages. C. They acted as interpreters for Oglethorpe and Tomochichi D. all of the above I think D.
*September 17, 2014*

**Social Studies**

Thanks Ms. Sue your always a big help :)
*September 17, 2014*

**Social Studies**

2. Which of the following would describe a hardship of early Georgia life? A. Disease from the alligators B. Cold and rainy weather C. clearing tree roots from the farm land D. bad relations with the creek indians I honestly don't know the answer at all but I'll go ...
*September 17, 2014*

**Social Studies**

Thanks again :)
*September 17, 2014*

**Social Studies**

1. Which of the following was important about the city of Savannah in the settlement of early Georgia? A. It was laid out in a beautiful and orderly manner B. It was hight bluff, which was good for defense C. It was on the water D. All of the above I think D?
*September 17, 2014*

**Physical Science**

please help me understand this question If measurements of a gas are 50L and 300 kilopascals and then the gas is measured a second time and found to be 75L, describe what had to happen to the pressure (if temperature remained constant). Include which law supports this ...
*September 16, 2014*

**Social Studies**

Thanks
*September 16, 2014*

**Social Studies**

Ok then would the answer be A or C? I'm confused on this one.
*September 16, 2014*

**Social Studies**

Which european country originally dominated what is today florida and southern georgia? A. Spain B. England C. France D. Portugal I think D?
*September 16, 2014*

**Social Studies**

Thanks
*September 16, 2014*

**Social Studies**

I think A?
*September 16, 2014*

**Social Studies**

From which of the following Native American periods has the least evidence been found in Georgia? A. Paelo-Indian B. Archaic C. Woodland D. Mississippian
*September 16, 2014*

**Social Studies**

Thanks :)
*September 16, 2014*

**Social Studies**

3. Which of the following are true about the system of mercantilism? A. It maintains a favorable balance of trade B. The colony produces materials that the mother country cannot produce C. The prosperity of the country as a whole is more important than the wealthy of ...
*September 16, 2014*

**Social Studies**

I know there so tricky and thanks for helping me.
*September 16, 2014*

**Social Studies**

Ok so what would my answer be? If the trustees prohibited Negro slavery then the answer wouldn't be C? So whats the answer?
*September 16, 2014*

**Social Studies**

2. Which of the following is NOT one of the regulations about land grants that the trustees put in place in Georgia? A. Deserving poor could farm fifty acres B. Men would serve in the Miltia if Necessary C. Farmers were allowed to own slaves D. Tools and food were provided to ...
*September 16, 2014*

**Social Studies**

So it would be C?
*September 16, 2014*

**Social Studies**

1. Which of the following is NOT a reason that Oglethorpe and the trustees wanted to start the colony of Georgia? A. to help the poor who could not pay their bills B. to help the englich economy C. to form large plantations D. to provide defense I think A is my answer correct?
*September 16, 2014*

**Language Arts**

So would it be c?
*September 15, 2014*

**Language Arts**

I'm not sure but I keep thinking its B.
*September 15, 2014*

**Language Arts**

3. Which statement best expresses a central theme of ''The Story Teller''? A. People with no children to care for are usually better at handling children. B. It is important to instruct children about right and wrong at all times. C. The best way for adults to ...
*September 15, 2014*

**Language Arts**

Thanks
*September 15, 2014*

**Language Arts**

C?
*September 15, 2014*

**Language Arts**

2. Which event propels the action in ''The Story-Teller''? A. A woman is traveling with three children. B. The aunt invites Cyril to look out the window at the animals and fields they are passing. C. The man disagrees with the aunt's story, and she invites ...
*September 15, 2014*

**Language Arts**

Thanks :)
*September 15, 2014*

**Language Arts**

1. In ''The Story -Teller,'' teh bachelor says that Bertha was ''horribly good.'' What do you think this term means? A. She is so good that she deserves three medals. B. She is horrible-looking but is very well behaved. C. Being good is a ...
*September 15, 2014*

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