Tuesday

October 25, 2016
Total # Posts: 325

**Physics**

A 23-kg child is sliding on an icy surface toward her mother at 3.0 m/s. Her 70-kg mother starts toward her at 2.0 m/s, intending to catch her. What percentage of the original kinetic energy is convertible? I calculated the convertible kinetic energy as Kconv=1/2*(m1)(m2)/(m1+...

*October 25, 2016*

**physics**

A cannon fires a shell straight upward; 1.7 s after it is launched, the shell is moving upward with a speed of 19 m/s. Assuming air resistance is negligible, find the speed (magnitude of velocity) of the shell at launch and 5.4 s after the launch.

*October 17, 2016*

**physics**

You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 6.4 m/s.When the tennis ball is at a height of 2.2 m above the ground, what is its speed?

*October 17, 2016*

**mathematics**

60

*October 16, 2016*

**mathematics **

In a class of 40 students;30 offer science; 20 offer mathematics and 8 neither. a.illustrate this information on a venn diagram . b.how Many students offer both subjects. c.how many students offer exactly one subject

*October 16, 2016*

**Physics**

This is a multiple choice question: You toss a (wrapped) sandwich to a friend leaning out of a window 10 m above you, throwing just hard enough for it to reach her. At the same instant, she drops a silver dollar to you.At what position do the dollar and the sandwich pass each ...

*October 10, 2016*

**American government. Please help!**

I think 1 is A

*October 7, 2016*

**American government. Please help!**

In what way was the government of ancient Athens different from the united states A) Athens was a direct democracy in which citizens B) Athens was an oligarchy ruled by the wealthy members of the council of five hundred C) Athens was a republic in which the people voted for ...

*October 7, 2016*

**Bio**

Polar regions receive less solar energy and heat per unit area than tropical regions.

*June 27, 2016*

**math**

what is the recursive formula when given the explicit formula for the geometric sequence

*June 24, 2016*

**Math/Pre Algebra HELP ME!**

2. A 3. C 4. B 7. B 9. D 10. A Are these right?

*June 2, 2016*

**Math/Pre Algebra HELP ME!**

Sorry!! 8. is supposed to be -x(6x - 7)

*June 2, 2016*

**Math/Pre Algebra HELP ME!**

1. What are the coefficients in the polynomial 5x^2 + 2x - 4? A. 5,2 B. -5,2 C. 5,2,-4 ** D. 5,-2,-4 For questions 2 and 3 add or subtract. 2. (m^2 - m - 4) + (m - 5) A. m^2 - 2m + 9 B. m^2 + 2m - 9 C. m^2 - 2m - 9 ** D. m^2 - 9 3. (5x^2 + x - 3) - (-2x^3 + 4) A. -2x^3 + 5x^2...

*June 2, 2016*

**Social Studies**

Thank you so much!!

*June 1, 2016*

**Social Studies**

Are the others right?

*June 1, 2016*

**Social Studies**

I think they all are about South Carolina, sorry.

*June 1, 2016*

**Social Studies**

No. But the last one is

*June 1, 2016*

**Social Studies **

1. A two thirds majority vote of both houses will pass a bill over to the governor's veto. A. True B. False 2. If the house makes changes, the bill goes back to the original house for a veto. A. True B. False 3. Which action does not occur in a committee? A. killing a bill...

*June 1, 2016*

**Social Studies**

3 is A because do you even know what conservative means? The youth became more open minded

*May 31, 2016*

**Math**

Kairi and Jacob have $80 for movies and dinner. If the movies cost $12 per person and $10 for a large popcorn and two pops, how much money do they have left for dinner? What equation would be best to use for this problem?

*April 27, 2016*

**Help Me On Math Please, If Anyone Is Available**

A multiple choice test has 5 questions each with 5 possible answers. Find the probability of answering all the questions correctly. A. 1/3,125 B. 1/25 C. 1/625 D. 1/125 I'm on a test, and this is the only one I'm stuck on.

*February 23, 2016*

**Physics**

A boy on a swing reaches a maximum height of 3.2 m and a minimum height of .55 m. What is the speed of the boy at the lowest point if the boy has a mass of 34 kg? v(final)=?

*January 28, 2016*

**Business**

Dukas Corporation's net cash provided by operating activities $218,000; its net income was $203,000; its capital expenditures were $146,000 and its cash dividends were $49,000. What is the company's free cash flow?

*January 19, 2016*

**Physics**

A soccer ball is kicked with 26.5n and accelerates at 6.5 m/s 2 to the right. What is the mass of the ball?

*January 1, 2016*

**Spanish/History**

Which empire was the largest in both Americas before the arrival of the Europeans? A. Inca B. Aztec C. Maya D. Cherokee I'm not sure if A or D but I think it is one of the two. Can anyone help me?????

*December 3, 2015*

**Algebra**

Does anyone know the answer?

*November 17, 2015*

**Physics **

A boat travels at 8m/sec and heads straight across a river 240m wide. The river flows at 4m/sec. What is the boats resultant speed with respect to the riverbank

*October 26, 2015*

**Science**

Anon is completely correct. I got a 100 please go with his answers I promise they are right.

*October 21, 2015*

**7th Grade Maths**

If Betty can jog 1500 metres in 10 minutes, how long will it take her to jog 10 Kilometres? PLEASE HELP ME IN THIS QUESTION I NEED IT HELP MEEEEEE!

*October 14, 2015*

**Maths**

If Betty can job 1500 meters in 10 minutes, how long will it take her to jog 10 Kilometres? PLEASE HELP MEEEEEEE!!!

*October 14, 2015*

**PHYSICS**

A placekicker is about to kick a field goal. The ball is 20.1 m from the goalpost. The ball is kicked with an initial velocity of 18.7 m/s at an angle θ above the ground. Between what two angles, θ1 and θ2, will the ball clear the 3.12-m-high crossbar? Give your...

*September 30, 2015*

**Physics**

A sound wave with a frequency of 260 Hz moves with a velocity of 343 m/s through air. What is the distance from one condensation region (area of maximum pressure) to the next?

*September 24, 2015*

**Math**

How do I identify the property used in a number sentence?

*September 3, 2015*

**math**

Do the following lines intersect? If yes, show the the point of intersection, if any. 5x+8y=-5 -x-1.6y=14 Im stuck. Please help! Thanks

*July 12, 2015*

**Law**

Yes, that is the question. Based on english law.

*June 10, 2015*

**Law**

There are two types of miscarriage of justice and after 2003, there was emphasis the conviction of guilty.

*June 10, 2015*

**Chemistry **

At 28.4 g sample of aluminum is heated to 39.4 degrees Celsius and then is placed in a calorimeter containing 50.0g of water. Temp of water increases from 21.00 degrees Celsius to 23.00 degrees Celsius. What is the specific heat of aluminum?

*May 7, 2015*

**Math Help**

Hi! I need help with these two questions. Thanks! 1.) Look for the first four terms for the following sequence below. an=n(n^2-6) 2.) For this question, remember that your answer has to begin with the second term of the following sequence. Look for the next four terms of the ...

*April 29, 2015*

**Chemistry**

A single titration was performed which required 12.60 mL of 0.100 M Na2S2O3. The density of the original, undiluted unknown bleach was 1.040 g/mL. Calculate the number of moles of ClO- in the sample titrated.

*March 8, 2015*

**ECE 203**

In my opinion, the purpose of Early Childhood is so that the young brains can absorb more knowledge. As they say, the young ones learn the most from their surroundings. Therefore, if the child is educated, then she/he/them will grow up that way.

*February 26, 2015*

**Language Arts: ESSAY IDEAS?!**

Well, that's fine. I mean, I already started researching on my third choice. Thank you anyway! :)

*February 26, 2015*

**Language Arts: ESSAY IDEAS?!**

I know about all of them, thus choosing these topics. All of them interest me very much, and I have no problem with any of them. The only thing I can't do is choose a single topic, since my education course system doesn't allow me to write on multiple topics.

*February 26, 2015*

**Language Arts: ESSAY IDEAS?!**

So I already have 3 ideas in my head to write a compare-and-contrast essay about, but I can't choose! Here are my options: 1) Books and Movies 2) iPhones and Androids 3) Philippines and the United States. Please give me feedback on what I should do, or give me another ...

*February 26, 2015*

**english**

Influence

*February 11, 2015*

**english**

something i don't even know

*February 11, 2015*

**chemistry**

377

*February 10, 2015*

**chemistry**

The fluorocarbon compound C2Cl3F3 has a normal boiling point of 47.6 ∘C. The specific heats of C2Cl3F3(l) and C2Cl3F3(g) are 0.91 J/g⋅K and 0.67 J/g⋅K, respectively. The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to ...

*February 2, 2015*

**Math Help!!**

When the owner of a gas station sets the price of 1 gallon of unleaded gasoline at 2$, he can seek approximately 20,000 gallons per day. When he sets the price of gas at 5$ per gallon, he can sell approximately 14,000 gallons per day. Let G(x) denote the number of gallons of ...

*January 28, 2015*

**ART check answers please**

thanks got them all right thank you Jessica and jacob

*January 24, 2015*

**Art check please**

1.chemical decomposition 2.Well meaning conservators actually damaged the works 3.volanic ash These answers are right trust me

*January 23, 2015*

**Math**

Find the exact value: 1.) cos^-1(sin(pi/2)) 2.) arccos(cos(7pi/2))

*December 8, 2014*

**Math**

Find the exact value: 1.) cos^-1(sin(pi/2)) 2.) arccos(cos(7pi/2))

*December 7, 2014*

**Math Question**

To solve this problem, use the Pythagorean Theorem to find the third side. Next, find the other five trigonometric functions of theta (sin, tan, csc, sec and cot). Cos=5/7

*December 2, 2014*

**Physics Homework Help**

1.) Auston’s racecar has a speed of 80 m/s when Auston releases a drag parachute. If the parachute causes a deceleration of -4 m/s2, how far will the car travel before it stops? 2.) Jordan throws a golfball straight up from the top of a building 50 meters high. The ...

*October 10, 2014*

**Delete**

Is it possible to have this question removed? Thanks so much! :) Subject: Pre-Calc Date: Saturday October 4, 2014 Time: 10:27am

*October 5, 2014*

**Pre-Calc**

The number of pounds of apples a cannery can produce and the processing cost are P(h) = 375h and C(n) = 0.35n + 1000 where P(h) is the number of pounds of apples that can be processed in h hours and C(n) is the cost of processing n pounds of apples. Use composition of ...

*October 4, 2014*

**Math**

The depth d in feet of the water in a bay at is given by d(t) = 3/2 sin (5πt/31) + 23 where t is time. Graph the depth of the water as a function of time. What is the maximum depth of the water to the nearest tenth of a foot? (Enter only the number.)

*October 2, 2014*

**k12**

1.A 2.C 3.B 4.C 5.C

*September 15, 2014*

**Math**

George has coins in his pocket. He has 7 more quarters than he has dimes. How many dimes does he have?

*September 8, 2014*

**Cyber Community Citizenship**

just took this test answers are a a d

*March 6, 2014*

**Science ~CHECK ANSWERS PLEASE~**

Thanks awesomecause I got it all right

*February 27, 2014*

**science**

What is the average speed of a satellite given the following information. 1) The earth's radius = 6000 km 2) The satellite is 900 km from the earth's surface 3) The satellite's orbital period: 2 hours 4) Circumference = 2pr (p = 3.14) A) 6 km/s B) 10 km/s C) 5 km/...

*February 10, 2014*

**world civilizations**

Regarding trade and social change in Africa, which statement is true? A. The West Africa Squadron succeeded in obstructing about 30 percent of the African slave trade. B. The most important development in West Arica before European conquest was reliance on exporting salt. C. ...

*January 15, 2014*

**World Civilizations**

Under the Tokugawa peace, daimyo A. were prohibited from coining money. B. were heavily engaged in foreign trade. C. social status increased. D. castle building was encouraged. I thought the best answer is B.

*January 15, 2014*

**World civilizations**

Thank You

*January 15, 2014*

**World civilizations**

All of the following were factors favoring British industrialization, except A. increased agricultural production. B. rising urbanization and higher wages. C. a decline in domestic demand for manufactured goods. D. immediate or canal access to ocean ports. I said C. which I ...

*January 15, 2014*

**world civilizations**

C B A D A C D B B C A D A B C C A D B B

*January 15, 2014*

**world civilizations**

In my world civilizations book.

*January 15, 2014*

**world civilizations**

i need help finding answers please :)

*January 15, 2014*

**world civilizations**

i havent made any selections yet because im having a hard time finding the answers.

*January 15, 2014*

**world civilizations**

1. All of the following were factors favoring British industrialization, except A. increased agricultural production. B. rising urbanization and higher wages. C. a decline in domestic demand for manufactured goods. D. immediate or canal access to ocean ports. 2. Under the ...

*January 15, 2014*

**world civilizations**

During the Industrial Revolution, in all countries, the impact of the railroads A. increased the demand for unskilled labor. B. caused domestic markets to be replaced by export markets. C. decreased the demand for unskilled labor. D. caused domestic labor to be replaced with ...

*January 15, 2014*

**please help me!! with this science!!!!!**

1 B biosphere 2 B The sphere that has three main parts: a metal core, a solid middle layer, and rocky outer layer 3 c in the atmosphere and in the hydrosphere 4 C mountains are built up 5 B forces that wear down, or destroy, landmasses I gto 100% on this test so here are the ...

*January 7, 2014*

**Business 101**

Did you ever get the answers?

*November 17, 2013*

**Physics**

A hockey player's arm and stick form a 1.6 m rigid segment. If the angular speed of the player's arm/stick is 1.2 rad/s, determine the resultant velocity of a motionless puck that is hit struck on if: a) the hockey player is stationary during the swing b) the hockey ...

*November 7, 2013*

**Trigonometry**

Use a calculator too find the value of ø if secø3.125

*October 17, 2013*

**Science**

Actually some of us are checking our answers. I'm actually moving on to be a veterinarian.

*October 8, 2013*

**math **

combining like terms 1.) 10x+6y-5x and 2.) 9x^2+10+4x^2+7

*August 10, 2013*

**math**

a woman puts $580 into a savings account for one year. the rate of interest on the account was 6 1/2%. How much interest for the year in dollars and cents?

*August 10, 2013*

**Physic 30**

INFORMATION: Kathy and Bill collided at an intersection. The police learned the mass of the truck is 3200 kg and the mass of the car is 2800 kg. Based on the length of the skid marks at the scene and the mass of the vehicles, police estimate that the combined mass was moving ...

*April 3, 2013*

**Calc**

nadia is pulling a tarp along level ground with a force of 25 pounds directed along the tarp. If the tarp makes an angle of 50 degrees with the ground, find the horizontal component of the force.

*March 11, 2013*

**Calc**

nadia is pulling a tarp along level ground with a force of 25 pounds directed along the tarp. If the tarp makes an angle of 50 degrees with the ground, find the horizontal component of the force.

*March 11, 2013*

**math**

Anita has two sisters and three brothers. The mean of all their ages is 6 years. Wht is the mean of their agesin 10 years and 20 years?

*February 25, 2013*

**MATH**

a b c or d

*February 15, 2013*

**Calculus**

Find the derivative of the function using the definition of a derivative. F(x)=squareroot(1-3x) Please show work for understanding, thank you! :)

*February 14, 2013*

**Calculus**

Find the instantaneous rate of change of V with respect to r when r=100 V(r)=.2r^2-20r+600 using limit definition. Please show work for understanding, thank you :)

*February 14, 2013*

**Calculus**

Use the intermediate value therom to show that there is a root of the given equation in the specified interval. x^5-7=2(25-x); (2,3) Please explain for understanding and show work, Thank you in advance :)

*February 8, 2013*

**Calculus**

correction 4x^2-16

*February 8, 2013*

**Calculus**

Find the horizontal asymptotes of the curve. y=-6x/squareroot (4x^2-160

*February 8, 2013*

**Spanish**

mis hermanos then you would break it down to mi hermana se llama blah y mi hermano se llama blah

*February 7, 2013*

**science**

Im here to say that Caroline is right and that she helped me with this question!!!!

*February 6, 2013*

**physics**

A 47.0-g Super Ball traveling at 26.5 m/s bounces off a brick wall and rebounds at 20.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.10 ms, what is the magnitude of the average acceleration of the ball during this time interval?

*January 25, 2013*

**math ??**

what is the 43rd term of -124-122-120

*January 16, 2013*

**math**

1 AND 1/2

*January 16, 2013*

**Algebra 2. Please help ASAP**

The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+]. Use the formula pH = –log[H+] to find the pH level, to the nearest tenth, of a liquid with [H+] about 5.4 x 10–14. A. 14.7 B. 13.3 C. 14.0 D...

*December 14, 2012*

**Algebra 2**

The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled [H+]. Use the formula pH = –log[H+] to find the pH level, to the nearest tenth, of a liquid with [H+] about 5.4 x 10–14. A. 14.7 B. 13.3 C. 14.0 D...

*December 14, 2012*

**Algebra 2**

Okay thank you.

*December 14, 2012*

**Algebra 2**

Suppose you invest $1600 at an annual interest rate of 7.9% compounded continuously. How much will you have in the account after 10 years? A. $35,254.34 B. $3,525.43 C. $3,435.91 D. $17,315.27

*December 14, 2012*

**Algebra 2**

Suppose you invest $1600 at an annual interest rate of 7.9% compounded continuously. How much will you have in the account after 10 years? A. $35,254.34 B. $3,525.43 C. $3,435.91 D. $17,315.27

*December 14, 2012*

**Physics**

the net external force of the propeller of a 4.0 kg model airplane is 9.5 N forward. What is the acceleration of the airplane? Answer in units of m/s^2

*December 13, 2012*