Friday

October 28, 2016
Total # Posts: 3,331

**Physics **

Three children are riding on the edge of a merry–go–round that is 84 kg, has a 1.40–m radius, and is spinning at 20.0 rpm. The children have masses of 21.0, 24.0, and 29.0 kg. If the child who has a mass of 24.0 kg moves to the center of the merry–go–...

*October 27, 2016*

**Math**

Gina and Maggie working together can do their MI-4 project in 24 hours. If Gina works alone for 8 hours and Maggie then finishes the job in 30 hours, how many hours would it take each working alone to do the project? [Assume both work at a constant rate].

*October 24, 2016*

**Math**

-0.3? I did a question before and it was Estimate f(2.9) given that f(3)=5 and f′(3)=4. And the answer was 4.6

*October 23, 2016*

**Math**

Estimate f(5.9) given that f(6)=5 and f′(6)=3.

*October 23, 2016*

**Physics**

Well from 80 to 70 to 60 is three twenty seconds. 20+20+20=100 (one minute) so from 60 to 50 is 20 seconds. Answer: It will take 20 seconds to cool from 60 degree Celsius to 50 degree Celsius.

*October 20, 2016*

**SOCIAL STUDIES (CHECK answer) please**

THE RIGHT ANSWER IS B The answer is NOT C because Louisiana is in the south east not the west and Americans would not just be able to sell regions,down in Louisiana you have to study the history of that state and its really interesting you get to learn about How it once wants ...

*October 19, 2016*

**Math**

If i remember how to do this correctly than it would be 3260 because 8 is closer to ten so you round up.

*October 19, 2016*

**Math**

8 is in the ones place 5 is in the tens place 2 is in the hundreds place 3 is in the thousands place

*October 19, 2016*

**Physics**

Well we know that Partial Pressure means the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own.

*October 19, 2016*

**physices**

Well we know that Partial Pressure means the pressure that would be exerted by one of the gases in a mixture if it occupied the same volume on its own.

*October 19, 2016*

**chemistry**

Okay. First make your balanced equation: Zn+2HCL-->ZnCl2+2H Now. there is excess HCL. That means Zn is your limiting reactant. So the find out zinc chloride in your stoichiometry you must use Zn. The work: g ZnCl2=(20 g Zn)(1 mole Zn/65.39g)(1 mole ZnCl2/1 mole Zn)(136.29g ...

*October 19, 2016*

**SOCIAL STUDIES (CHECK ANSWER)**

N New York W California E Florida S

*October 19, 2016*

**calculus**

first of all you dont need () those for the five so that's one, and you dont need the () for the 1/x your problem should look like this y=5(3+e^1x) either that that idk

*October 19, 2016*

**American Government**

Specifically, the lack of a strong national government in the Articles of Confederation led to three broad limitations. Economic disorganization Lack of central leadership Legislative inefficiencies

*October 19, 2016*

**American Government**

They're pretty-much two ways of saying the same thing. Federalism is the idea that the Federal government has ONLY specific and limited powers to act as an AGENT for the States, not as their manager. This is not just an idea, by the way, it's the law, which is why all ...

*October 19, 2016*

**Social Studies**

21. The committee of five. Congress picked a committee to write a declaration explaining why the colonies wanted independence. It had three purposes; a theory of government, a list of complaints, and a declaration of war. Remember to use RACE: Restate, Answer Cite Explain.

*October 19, 2016*

**Reading/ language arts**

How does the mother's use of Spanish reflect an important part of her character?

*October 19, 2016*

**Social Studies**

1.C 2.D 3.B

*October 17, 2016*

**Physics **

Block B has a mass of 4.50kg and is moving to the left at a speed of 4.50m/s. Block A has a mass of 6.50kg and is moving to the right. The two blocks undergo a perfectly inelastic collision. What should the velocity of the Block A be in order to have the two blocks move to the...

*October 14, 2016*

**Language Arts**

"I am a citizen of the world" is a key line in the story "When Greek Meets Greek." What does this line mean to you? Explain how this line fits the events of this story or another selection in this unit. Include details to support your explanation. Can you ...

*October 14, 2016*

**Physics **

Two men pushing a stalled car generate a net force of +699 N for 7.13 s. What is the final momentum of the car?

*October 13, 2016*

**pre cal**

A number of cells decreases by 36% every 9 hours. By what percent does it change every 1 hr... 40 mins...2days

*October 9, 2016*

**Physics **

When an 84.7 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.00E+3 J. By how much does the potential energy of a 17.3 kg child increase when the child climbs a normal staircase to the second floor?

*October 5, 2016*

**Physics **

Suppose a 356–g kookaburra (a large kingfisher bird) picks up a 65.0–g snake and raises it 2.30 m from the ground to a branch. How much work did the bird do on the snake? How much work did it do to raise its own center of mass to the branch?

*October 5, 2016*

**Math**

Use the diagram below. Write an equation using the angle measures shown. Then, find the measures of LAVB and LBVC

*October 5, 2016*

**Math**

What is 7over N equall to 28 over 48

*October 5, 2016*

**Social studies**

B & C

*October 1, 2016*

**Math **

Working alone, it takes Leeann 30 minutes to clean the back yard. Mandy can clean backyard in 25 minutes . If they worked together how long would it take them to clean the yard?

*September 29, 2016*

**Math **

2 liters of cleaning solution is 65% ammonia. How much water must be added to dilute it to a 40% soulition?

*September 29, 2016*

**Math**

Kelly has 525 red, green, blue balloons. She has 4 times as many green balloons as red balloons. She has half as many blue balloons as green balloons. What is the value of r, the number of red balloons?

*September 26, 2016*

**Math**

Sophia has a total of 32 pictures. She has 17 pictures that are 5 millimeters wide. The rest of her pictures are 6 millimeters wide. What is the value of w, the total width of all of Sophia's pictures?

*September 26, 2016*

**Biochem**

You prepare a 1L solution of 0.5 M imidazole. (pKa= 7.05). Calculate the pH of the solution after you add 0.1 moles of HCl. I need to create an ICE table. I also know I need to use the Henderson- Hasselbalch equation but I'm confused on what to plug in.

*September 23, 2016*

**Physics **

A painter of mass 80.0 kg stands on a platform of mass 75.0 kg and pulls on two ropes which hang over pulleys, as shown. He pulls each rope with a force of 400.0 N. Assuming a coordinate system where +y is up, calculate the y-component of the acceleration ay. ay can either be ...

*September 21, 2016*

**Math**

I think it's 9

*September 21, 2016*

**Physics**

An athlete performing a long jump leaves the ground at a 27.1 ∘ angle and lands 7.73 m away. 1). What was the takeoff speed? Express your answer using three significant figures and include the appropriate units. 2).If this speed were increased by just 3.0%, how much ...

*September 16, 2016*

**trigonometry**

what is the appropriate approximation of cot^-1 27

*September 14, 2016*

**trigonometry**

The shadow of a vertical tower is 65 ft long when the angle of elevation of the sun is 35 degrees. Find the height of the tower

*September 14, 2016*

**Economics**

Do you think a nation’s output should be distributed according to income or according to some other standard (such as basic human need)? Explain your answer.

*September 13, 2016*

**Introduction to algebra**

144 is the product of 9 and Holly's height . Use the variable h to represent Hollys height

*September 12, 2016*

**Chem**

Where is the NO3 and KCl?

*September 11, 2016*

**Chem**

Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) and KCl(aq).

*September 11, 2016*

**Math**

Consider the graph of the parabola f(x)equals=x squaredx2. For xgreater than>0 and hgreater than>0, the secant line through (x,f(x)) and (xplus+h,f(x+h)) always has a greater slope than the tangent line at (x,f(x)). Choose the ...

*September 10, 2016*

**Chemistry**

What is the name of the compound NO3. (Not NO3-, nitrate)???? Please help!

*September 10, 2016*

**Physics (Help Plz)**

Ilya and Anya each can run at a speed of 8.00 mph and walk at a speed of 3.50 mph . They set off together on a route of length 5.00 miles . Anya walks half of the distance and runs the other half, while Ilya walks half of the time and runs the other half. 1) Find Anya's ...

*September 9, 2016*

**NAVL Science (help)**

Apparently the equation relationship is : P(vac) = P(atm.) - P(abs) But I need help to find the answers

*September 8, 2016*

**NAVL Science (help)**

The USS Ronald Regan's (CVN 76) barometer reads 30.14 in-hg. A vacuum gage at the port main condenser reads 18.25 in-Hg. What is the pressure relationship for this gage? What is the absolute pressure, in Psia, for the port main condensor?

*September 8, 2016*

**SAT Prep's**

A survey asked students from grades 8 and 9 about their favorite sport. The table contains data from the survey. Baseball Basketball Football Hockey Soccer Grade 8 8 2 12 3 5 Grade 9 6 3 10 2 4 The percentage of 8th grade students who said football is their favorite sport is...

*September 4, 2016*

**Math problem soving**

Ok if someone can help me understand I greatly appreciated. I want to know how this is the answer the numbers in table I know answer is day 6 but the pattern?. I got it wrong in my exam. The teacher explained it to me but I still don't get it. On July 5,in the area around ...

*September 1, 2016*

**Math**

PLEASE HELP! If 1 is the square root of dividing-OH FORGET IT IM SEXY AND YAAAAAS WERK IT

*September 1, 2016*

**Math question for Steve**

Hi Steve you answered on my question regarding bigfoot call I can see on the six day but what is the pattern tof get to six day . The numbers of calls total

*September 1, 2016*

**Math problem soving**

Ok if someone can help me understand I greatly appreciated. I want to know how this is the answer. I got it wrong in my exam. The teacher explained it to me but I still don't get it. On July 5,in the area around center village,there was great excitement. Six different ...

*August 31, 2016*

**SS**

How did United domestic policy boost production during the war?

*August 25, 2016*

**Ss help pls don't have a lot of time**

Is it that

*August 22, 2016*

**Ss help pls don't have a lot of time**

Kuwait

*August 22, 2016*

**Ss help pls don't have a lot of time**

What country on the Arabian peninsulas has the highest lireracy rate? A- Kuwait B-Yemen<<<<< C-Tunisia D-Algeria

*August 22, 2016*

**SS**

Which reason best explains the motivation for American expansionism?

*August 19, 2016*

**Science**

how does an individual’s genetic makeup interact with nutrition, smoking

*August 17, 2016*

**Life Orientation**

1: Define inhumane farming methods 2: Give at least three examples of inhumane farming methods and motivate why you regard them as inhumane 3: Suggest and motivate at least four ways by which these farming methods could be made humane

*August 16, 2016*

**Art Help plzs**

which word means to influence someone in a positive and exciting manner?

*August 14, 2016*

**algebra**

i didn't mean to add that sorry

*August 10, 2016*

**algebra**

1.) The volume of a rectangular box is 64 ft3. If the width is 3 times longer than the height, and the length is 9 times longer than the height, find the dimensions of the box. Define your variables then show all work using the equation editor. Write a sentence that explains ...

*August 10, 2016*

**algebra**

what typo?

*August 10, 2016*

** Psychology**

1.The rational style of learning sometimes conflicts with the traditional school environment. Could a school be created that takes advantage of the characteristics of the rational style? How? Are there types of learning for which the analytical style is clearly superior? 2....

*August 9, 2016*

**Math calculus **

An ice cube is 3 by 3 by 3 inches is melting in such a way that the length of one of its side is decreasing at a rate of half an inch per minute. Find the rate at which its surface area is decreasing at the moment when the volume of the cube is 8 cubic inches

*August 7, 2016*

**Algebra**

Sara can write a paper in 5 hours and Jasmin takes 7 hours. How long will it take the two of them writing together?

*July 12, 2016*

**Algebra **

Y=7X-16, 7X+ Y=3 are these lines perpendicular, parallel, or neither

*July 6, 2016*

**Math**

What is the least number possible with 5 in the thousand place , use the digits 4 5 6 7

*June 28, 2016*

**ALGEBRA**

A motorist drove 180 mi before running out of gas and walking 6 mi to a gas station. The motorist's driving rate was twelve times the walking rate. The time spent walking was 3 h less than the time spent driving. How long did it take for the motorist to drive the 180 mi?

*June 25, 2016*

**algebra**

As part of a conservation effort for a lake, 70 fish were caught, tagged, and then released. Later, 80 fish were caught from the lake. Four of these 80 fish were found to have tags. Estimate the number of fish in the lake.

*June 25, 2016*

**Pre-Cal (Help Plz)**

[Note: I've attempted these problems 4 times and I haven't been able to get any of them correct. I really need help with this, please.] Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. ...

*June 22, 2016*

**Physics **

0.255 kg catcher is attached by a 45.0 cm long massless cable to a frictionless axle. The catcher is initially at rest. A 0.144 kg ball with a radius of 0.0875 m rolls without slipping from a height of 1.25 m and is captured by the catcher. For a solid ball, I = (2/5)MR2. (a) ...

*June 21, 2016*

**Pre-Cal: Domain (cont.)**

I figured out problems 1-7, arithmetically (thank you all for the help on that) But not number 8: f(x)=5/x , g(x)=7/(x+7) #7). Find (f/g)(x) Answer ==> [5(x+7)]/[7x] #8). Find the domain of (f/g)(x). (enter your answer using interval notation)

*June 9, 2016*

**Pre-Cal: Domain**

[Note: I really need help on these Domain questions. I've been struggling with this all day] -Consider the following: f(x)= 5/x , g(x)= 7/(x+7) -Find the solutions to the following: 1). (f+g)(x) 2). Domain of (f+g)(x) [Use interval notation too] 3). (f-g)(x) 4). Domain of...

*June 9, 2016*

**college Algebra**

Y=7x-16, -7x+y=3 are the lines perpendicular, parallel or niether

*June 3, 2016*

**Statistics**

A certain disease occurs in 4% of the population. A blood test for this disease shows a false positive 12% of the time. That means a test will show positive given that the person does not have the disease. What is the probability that a person tests positive but does not have ...

*May 25, 2016*

**7th Math**

Are you just trying to get other people to do your homework for you?

*May 11, 2016*

**math**

A simple random sample is drawn from a normally distributed population. The value of which of the following will not be known for certain but can be inferred?

*May 9, 2016*

**Literature**

Discuss the role of Edna. Why is she significant, even though she is a very minor character? What does she teach Keisha and Jalani about people who are homeless and/or needy? What is meant by her statement, "Yo spirit is a shinin' silver star, chile. Can't nobody ...

*May 8, 2016*

**Common Core Math7**

A school store has 1,200 pencils in stock and sells and average of 25 pencils per day. The manager reorders when the number of pencils in stock is 500. Write and solve an equation to find out how many days will pass before the manager needs to order more pencils.

*May 5, 2016*

**Language Arts**

1.d 2.c 3.b 4.c 5.a 6.a,c 7.c 8.d 9.c Ok here are the answers to English quiz for the book. Trust me they are right answers. I took the test. #LOTSOFLOVE

*May 5, 2016*

**Language Arts**

By reading the book, I thought it would be d. Because getting killed is the most tragic happening. But let me take quiz. I will tell you then.

*May 5, 2016*

**Math**

Did you get it?

*May 3, 2016*

**health**

The peripheral nervous system (select all that apply) Is made up of the brain and spinal cord Links the body to the brain and spinal cord Is made up of sensory and motor neurons Is responsible for thought and reasoning I think it could be b and c?

*May 2, 2016*

**Math**

The numbers of two consecutively numbered gym lockers have a sum of 153. What are the locker numbers?

*April 25, 2016*

**Social Studies**

What's the answer to all the questions

*April 21, 2016*

**Math**

A 6-inch pizza costs $3.50. A 12-inch pizza costs $11. How much less is the area of the 6-inch pizza than the area of the 12-inch pizza? Express your answer to the nearest hundreth.

*April 20, 2016*

**Social Studies**

Thank you Iris! No one else wanted to put it... so much for help...

*April 15, 2016*

**Math**

Ros's dog sparky is 24 inches long. One side of sparky dog house is 36inches long and the other side is twice as long as sparky. What is the distance around sparky doghouse

*April 13, 2016*

**Math**

A spa is 9 yards long and 7 yards wide. A locker room 8 yards long and 6 yards wide is at one end of the spa. How much floor space do the spa and the locker room take up?

*April 13, 2016*

**Math**

Can you explain to me how?

*April 13, 2016*

**Math**

Zack is planning to make a flower garden. He has 24 one-yard sections of fence that he place around the garden. He wants the garden to be as long as possible. What is the longest length he can use for the garden? How wide will the garden be?

*April 13, 2016*

**Math**

Thank you...

*April 13, 2016*

**Math**

The floor of a delivery van has an area of 56 square feet and is 8 feet long. How many rows of 8 boxes that measure 1 foot by 1 foot can be put in the delivery van?

*April 13, 2016*

**Math **

5. Joe Sullivan invests $9,000 at the end of each year for 20 years. The rate of interest Joe gets is 8% annually. Using the tables in the Business Math Handbook that accompanies the course textbook, determine the final value of Joe's investment at the end of the 20th ...

*April 11, 2016*

**Business math - question help **

At the beginning of each year for 14 years, Sherry Kardell invested $400 that earns 10% annually. What is the future value of Sherry's account in 14 years? A. $14,000 B. $13,100 C. $12,309 D. $12,709 Answer: D? I've calculated several times and come out with C or D ...

*April 11, 2016*

**Elementary education**

Yes math

*April 8, 2016*

**Elementary education **

A napkin ring is being made of cast silver. It has the shape of a cylinder 1.25 inches high, with a cylindrical hole 2 inch in diameter and a thickness of 1/16 inch. How many ounces of silver are needed? [silver weighs 6 ounces per cubic inch]

*April 8, 2016*

**Math **

An ice cream cone is 5 inches high and has an opening 3 inches in diameter. It is filled with ice cream and then given a spherical top. How much ice cream is there? The top part is 1/2 of a sphere.

*April 8, 2016*

**Bus. Math**

What is the effective interest rate of an 8% 13-week Treasury bill? Assume it is a $10,000 Treasury bill, and round your answer to the nearest hundredth percent. A. 8.20% B. 9.00% C. 8.17% D. 8.16% Answer: D??

*April 4, 2016*

**Algebra**

Lisa set a weekly goal of jogging 18 miles. On each of the first 3 days, she jogged 2 3/8 miles. How many more miles must she jog to reach her goal?

*March 27, 2016*