Thursday

July 31, 2014

July 31, 2014

Total # Posts: 1,491

**math**

If I have a peice of carpet that is 9 ft by 8 ft and the cost is .59 per square ft how much does it cost for the carpet?

**Maths**

If a*b=2a+b such that 2*3=2(2)+3,find (i) b when 3*b=b*5 (ii) d when d*(3*d)=(d*3)*d

**Physics**

A golfer, putting on a green, requires three strokes to "hole the ball." During the first putt, the ball rolls 5.9 m due east. For the second putt, the ball travels 2.4 m at an angle 20° north of east. The third putt is 0.50 m due north. What displacement (magnit...

**statistics**

The following random sample was collected: 22 33 44 6. The 80% confidence interval for the mean is? I have the answers; however, I do not know how to plug in the numbers to solve the problem.

**algebra **

A triangular-shaped wall has a base of 2x=4 and a height of x+3. The area of the triangle is 56 squared inches. What is the value of x?

**math**

what does base mean?

**Algebra**

The mean is 18.1 The z-score for 13.0 is - 1.7. What is the standard deviation for this data set.

**statistics**

A vending machine company wants to check three of its machines to determine if they are properly dispensing 12 ounces of coffee. Their data is given below. Reference: Ref 11-4 Compute the test value for the coffee machines. Answer 2.25 5.06 6.62 4.86

**Statistics**

A song must be n longer than 3 minutes and 30 seconds, or (210 seconds) Micheal Jackson founds out that his mean song length is 244.6 seconds with a standard deviation of 29/3 seconds. What is the null hypothesis and the alternative hypothesis, what is the right formula and ca...

**math**

25+6

**Statistics**

A song must be n longer than 3 minutes and 30 seconds, or (210 seconds) Micheal Jackson founds out that his mean song length is 244.6 seconds with a standard deviation of 29/3 seconds. What is the null hypothesis and the alternative hypothesis, what is the right formula and ca...

**math**

Thanks!

**math**

write an equivalent expression to the expression below. (17 x 93)/(17 x 97)

**math**

write an equivalent expression to the expression below.(17*93) (17*97)

**ap statistics**

A fire insurance company felt that the mean distance from a home to the nearest fire department in a suburb of Chicago was at least 4.7 miles. It set its fire insurance rates accordingly. Members of the community set out to show that the mean distance was less than 4.7 miles. ...

**ap statistics**

The manager at Air Cargo feels that the weights of packages shipped recently are less than in the past. Records show that in the past packages have had a mean weight of 36.7 lb. and a variance of 201.64 lb2. A random sample of last months shipping yielded a mean weight of 32.1...

**ap statistics**

An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial distribution? (2 points) ...

**ap statistics**

An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial distribution? (2 points) ...

**ap statistics**

In a survey, 600 mothers and fathers were asked about the importance of sports for boys and girls. Of the parents interviewed, 70% said the genders are equal and should have equal opportunities to participate in sports. B. Using the normal approximation without the continuity ...

**ap statistics**

An unnoticed mechanical failure has caused one-fourth of a machine shop’s production of 10000 pistol firing pins to be defective. A random sample of 25 firing pins was drawn from the population. a.) Explain why this random variable has a binomial distribution? (2 points) ...

**Social Studies**

what are the real answer then Ms.Sue

**Social Studies**

Can somebody please check my answers? Thank you :) 1. Which is a key factor that affects the climate of mountainous Latin America? a. snow b. El Niño c. elevation ** d. sea breezes 2. Which statement best describes the economies of Central America? a. Central America...

**Chemistry**

How many grams of acetic anhydride are needed to react with 3.82g of salicylic acid?

**PHYSics**

a child with a mass of 29 kg sits at a distance of 4m from the pivot point of a seesaw. where should a 15 kg child sit to balance the seesaw?

**physics**

robin is standing terrified at the end of a diving board, which is high above the water. if robin has a mass of 75 kg and is standing .6m from the board's pivot point, what torque is robin exerting on the board

**statistics**

We guess, based on historical data, that 30% of graduating high-school seniors in a large city will have completed a first-year calculus course. What's the minimum sample size needed to construct a 95% confidence interval for a proportion with a margin of error of 2.5%?

**Precalculus**

Show: sin(a-b) sin(a+b) = sin^2 a - sin^2 b

**EXP 105**

I need help with my grammar quiz in week 2.

**Statistics**

A population has a standard deviation of 15.2. How large a sample must be drawn so that a 95% confidence interval for the population mean will have a margin error equal to 3.5?

**`Statistics**

A public relations firm found only 9% of voters in a certain state are satisfied with their US senators. How large a sample of voters should be drawn so that the sample proportion of voters who are satisfied with their senators is approximately normally distributed?

**Chemistry**

[OH─] = 0.10 M [OH─] = 0.20 M t(min) Abs ln(Abs) Abs ln(Abs) 0 1.000 0.000 1.000 0.000 1 0.905 -0.100 0.678 -0.389 2 0.811 -0.209 0.451 -0.796 3 0.735 -0.308 0.288 -1.245 4 0.664 -0.409 0.185 -1.687 this is what the table looks like because my explanation of it wa...

**Chemistry**

I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different concentrations of OH- ...

**Biology**

Briefly describe a portal system and give the location of two portal systems in the human body.

**Chemistry**

The data below has been taken for the reaction of a dye with the hydroxide ion. The reaction was performed at two different hydroxide ion concentrations while the dye concentration was kept constant. What is the rate law? [OH─] = 0.10 M [OH─] = 0.20 M t (min) Abs l...

**chemistry**

how many grams of sodium metal are needed to give 781 g of hydrogen?

**Chemistry**

How do I balance the following reaction in acidic conditions? N2O4 + S8 = NO + H2SO3????

**math. plzz help**

I got the last one. I'm pretty sure it's 14.8.

**math. plzz help**

I'm currently working on this too. The first one is 5.8, the second one is 14.7, and I'm not too sure what the third one is. :)

**physics**

a water balloon launcher with a mass of 4 kg fires a .5 balloon with a velocity of 3m/s to the east. what is the recoil velocity of the launcher?

**Social Studies**

2. How does India’s form of government contrast with the governments of Pakistan and Afghanistan? India is an Islamic republic; the others are not. Pakistan and Afghanistan have a long history of democratic government. India does not have a constitution. India is a secula...

**chemistry**

a barometer is read directly in torrs or mm Hg. an open-end manometer has a closed arm liquid height of 48.4 mm and an open arm liquid height of 62.6 mm. if the air pressure is 758.0 torrs, what is the pressure of the gas connected to the manometer?

**statistics**

.05,.07

**College Algebra**

write the equation for the line that passes through the point (-4,7) and is perpendicular to 3y-8=x-4. leave equation in thw point-slope form show all work

**physics**

great, thanks so much!

**physics**

I'm sorry, I wrote the question wrong! Correctly, the questions reads: A 1.761 km car is moving down a slope of 12% at a constant velocity of 17 m/s. What I'd the direction and magnitude of the frictional force? Again, sorry!

**physics**

A 1.761 km car is moving down a road with a slope (grade) of 12% at a constant direction and magnitude of the frictional force? Please show step by step if possible, I am extremely lost! Thanks!

**US history**

thank you for this Mrs. Sue :) this exactly what i need!

**US history**

a colonist as in like when they sailed in the mayflower and a those pioneers that traveled on the Oregon trail

**US history**

what are the similarities between a pioneer and a colonist?

**Math**

A board is 6 3/4 feet long.If 2/3 of the board is cut off, what is the length of the piece that is cut off.

**Math**

Eden took a quiz with 15 problems and got 3/5 of the problems correct.how many problems did she get correct.

**Science**

whats the whole idea of gearing up and/or down in robotics? (someone mentioned it's like stick shift-but I don't drive so...) when is it each one?

**US history**

what happened as a result of the Second Bank of the United States not having its charter renewed in 1836??? ***was inflation involved???

**Finance**

The ________ model is usually considered the best of the capital budgeting decision-making models. A) Internal Rate of Return (IRR) B) Discounted Payback Period C) Profitability Index (PI) D) Net Present Value (NPV) Is the correct answer D. (NPV)

**Intro to Computers**

You are setting up a desktop computer for an AutoCad specialist who needs a minimum of 125 GB of RAM. Which operating system below would be best-suited for his needs? A. Windows 8 Home 64-Bit Edition B. Windows XP 32-Bit Professional Edition C. Windows Millennium 64-Bit Profes...

**US history**

What is the purpose or reason for the Factory system and when was it invented????

**Introduction to Computers**

The command prompt found on Windows 7 and Windows 8 is very similar to the interface of what past operating system? A. Dos B. Windows 95 C. Windows 98 D. Windows NT

**Math**

Wait. How could you add 6 on both sides if the (1/4)n has been subtracted on both sides?

**Math**

Okay, but I was stuck when trying to find the answer. My process was: n-6=(1/4)n n=(6^1/4)n at this step I am stuck to know what to do next. Please help.

**Math**

When it says, "Paulo has a certain amount of money. If he spends six dollars, then he has 1/4 of the original amount left." So would the equation be n-6=1/4?

**English **

(1) We decided to climb Mt. Rainer, but it was a long, hard journey to Washington State from Medford, Oregon. (2) We were worried about our likely sucess in the cold enviroment of the upper slopes. (3) For one thing, Marty was broke and anxius about having warm clothes for cli...

**English**

Thank you

**English**

Complete the following sentence with a word or words that show a logical relationship. Joshua took a nap _______ sorting the mail. A. after B. instead of C. while D. before

**math**

Write 2005693 in expand form using powers of tens

**social studies**

explain why the framers of the constitution didn't want any of the branches to be more powerful than the other branches?

**English**

What is the definition for "Vague Optimism"?

**Science**

What are the reason why Global Warming is destroying our environment? And what causes Global Warming?

**Algebra**

what is the inverse of the linear parent function? How would you graph the inverse and what are the values for the inverse???

**English**

what does it mean by "How does each question that begins "Will you join the battle" directly address the audience to whom Johnson is speaking?"

**English**

What does it mean by "What is the supporting idea in this part of the speech?"

**Algebra**

what is the inverse of the linear parent function y+x?? and what are its point/values???

**Social Studies (History)**

Why were women the active leaders in the effort of the temperance movement?

**Social Studies (History)**

What was the Women's Club about?

**Social Studies (History)**

What would be two concerns with women leaving their home to go to work in the late 1900s and early 1900s?

**college intermediate algebra**

Working together, two people can mow the lawn in 24 minutes. Working alone, one person takes 20 minutes longer than the other. How many minutes would it take each person to mow the lawn alone? Thanks!!!

**Intermediate Algebra (College)**

...I don't know thats exactly why I was asking actually. cool. thanks.

**Intermediate Algebra (College)**

That's exactly what I was thinking, then I was also thinking, wouldn't this work? 14 - 5/x = x^2 14 - 5 = x^3 9 = x^3 ???

**Intermediate Algebra (College)**

Solve algebraically: 14/x^2 - 5/x = 1 Thank you!!! (:

**Physics**

If a person lifts a 21.9 kg bucket very slowly from a well and does 8.3 kJ of work on the bucket, how deep is the well?

**us history**

can you list any political and economic factors of the lewis and clark expedition.

**Algebra**

1. a) write y=4x+8 in factored form 2. a) write y=-2x-6 in factored form 3. a) write y=1/3x+3 in factored form These are the answers I got: 1. y=4(x+2) 2. y= -2(x+3) 3. y=1/3(x+9) If I got any of these wrong, tell me what I'd did wrong.

**English**

What are the disadvantages of using a photograph to learn about taking a stand? How is it negative or unhelpful?

**Internet (Computers)**

What does "Look around the home page and fill in 5 options or features you see" mean?

**Math**

What would 64x6^4 equal in simplest form? Please show your work.

**Math**

Please show work.

**Math**

What would 64x6^4 equal in simplest form?

**Math #2**

If I had a math problem 2x^4 x y^-4 x z^-3 / 3x^2 x y^-3 x z^4. In simpler terms it would look like this: 2x^4 X y^-4 X z^-3 ------------------- 3x^2 X y^-3 X z^4 When I tried to solve this I got 6x^2 X y^-1 X 2^-7. Am I correct? If not could you please help me on how to solve...

**Math**

If I had a math problem of 3n^4/3n^3 would my answer be 1n^1 which equals to n^1?

**Social Studies (History)**

Am I correct? If not please help me understand on why it the U.S. is a "salad bowl" and not a "melting pot".

**Social Studies (History)**

Why was the United States a "salad bowl" rather than a "melting pot"? "Salad bowl" means everybody is not the same and "melting pot" means everybody is the same. I said The U.S. is a "salad bowl" because everyone is treated dif...

**Calculus - Volume By Integration**

Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the y-axis: y=(x-2)^3-2, x=0, y=25 Solve by either the disk or washer method. I calculated the volume using the shell method and got 1250pi. However, I can't figure o...

**Calculus - Volume by Integration**

I was able to calculate the volume for the shell method. I got 1250pi on integral [0,5]. However, I still need help with the disk method. I wasn't able to figure it out and I'm not sure which integral to use.

**Calculus - Volume by Integration**

Reiny's answer isn't right at all. I looked over her math.

**Calculus - Volume by Integration**

Usine shells, you calculated it with respect to x, but it should be with respect to y. Maybe that's why your answers aren't the same? Could you look over again for me? I'm still not sure about it.

**Calculus - Volume by Integration**

What happened to π in your calculations? Also, could you explain part (b)?

**Calculus - Volume by Integration**

Find the volume of the solid generated by revolving the region bounded by the given lines and curves about the y-axis: y=(x-2)^3-2, x=0, y=25 (a)solve by either the disk or washer method (b)solve by the shell method (c)state which method is easiest to apply

**Computers (internet)**

What does it mean by "How common or acceptable is plagiarism in our school community?

**Science**

Why?

**Science**

What kind of electromagnetic radiation could be used to "see" molecules? A cold virus? Explain your reasoning please.

**Science**

What is a frequency of a wavelength?

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