Saturday

December 10, 2016
Total # Posts: 849

**Math**

What is the difference between a linear and a quadratic model? How do I know which one is good for the graph? :S I know it has to do with equations to find R2

*March 20, 2011*

**Algebra**

Factor completely and then place the factors in the proper location on the grid. 4y2 + 25y + 6

*March 17, 2011*

**Algebra**

Laura has a roll of ribbon. There are 20 yards of ribbon on the roll. What equation can Laura use to find the number of inches of ribbon on the roll

*March 10, 2011*

**Math**

Do you suggest any other topics that has a lot of information?

*March 8, 2011*

**Math**

I was assigned an ISU for Data management. In first part, it requires a thesis (Example: Why do teenagers pay so much for car insurance?), hypothesis and 3 main points to back up thesis. I told my teacher that I wanted to do about death rates, what factors cause death rates in...

*March 8, 2011*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?

*March 7, 2011*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?

*March 7, 2011*

**Math**

Consider every whole number area from 2 square units to 30 square units. For which of these areas is there only one rectangle with whole number side lengths?

*March 7, 2011*

**accounting**

purchases from xavier corporation were incorrectly recorded at 41,000 instead of 14,000. Should we adjust purchases and accounts payable?

*March 6, 2011*

**Math**

Ah, ok thank you!

*March 6, 2011*

**Math**

Thank you! I think I did this before but I forgot... How do you know whether or not to use those formulas in these kind of questions? rearrange formulas? P(A U B) = P(A) + P(B) - P(A and B) and P(A U B) = P(A) + P(B)

*March 6, 2011*

**Math**

Thanks! T___T another question (Last one I promise, lol) The probability of a household subscribing to The Economist is 0.4 while the probability of subscribing to National Geographic is 0.6, and the probability of subscribing to NEITHER magazine is 0.2. What is the ...

*March 6, 2011*

**Math**

If possible, can you help me with this question also? From a group of 10 girls and 10 boys, 10 will be chosen to form a committee. Find the probability that atleast ONE GIRL is chosen. I did it like this At least 1 girl so therefore I separated more than 1...

*March 6, 2011*

**Math**

So, for b it is (4,3)(4,4) + (4,2)(4,1)/(8,5)= 28/56= 1/2?

*March 6, 2011*

**Math**

2a) (4,1)x(4,4)/ (8,5)=4/56 For 2a, why is student 4,4? I don't understand that. I know that for 1 teacher, there is 4 student because there is 5-person committee. I don't know question b.

*March 6, 2011*

**Math**

Find the probability of: a) Rolling a three OR a six with a single die Answer: P(3 U 6)= n(3U6)/n(S) = 3+6/6 = 9/6 reduced: 3/ b) Dealing an ACE OR a FACE CARD from a standard deck Answer: P(A U F)= 4/52 + 12/52 = 4/13 2. A 5-committee is to be chosen from 4 teachers and 4 ...

*March 6, 2011*

**Math**

How many distinct permutations of the letters of the word OTTAWA being and end with the letter T? I did 6!/2! :S but i get 360. I tried 6P2=30 I am getting it wrong... help please.

*March 3, 2011*

**physics**

You push a 1.9 kg block against a horizontal spring, compressing the spring by 13 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 60 cm from where you released it. The spring constant is 200 N/m. What is the block-table coefficient ...

*February 14, 2011*

**science/math**

0.0821917 ? .082 m a day

*January 25, 2011*

**science/math**

A sand dune can travel up to 30 m per year. How far does the sand dune move per day?

*January 25, 2011*

**Pre-algebra**

Transform the formula. The area of a triangle A can be found with the formula A=1/2bh where b is the length of the base of the triangle and h is the height of the triangle. Solve the formula for h.

*January 20, 2011*

**English**

Thanks for your help.

*January 19, 2011*

**English**

The example we were given was - He was a fine doctor, but he was growing old. My assignment was to find 5 sentences that use this pattern.

*January 19, 2011*

**English**

Where can I find examples of the sentence pattern Pronoun-verb-article-noun, conjunction-pronoun-verb-adverb on the internet? I need 5 examples. Thank You.

*January 19, 2011*

**ant101**

how would i answer this question? i am having a hard time coming up with an answer

*January 19, 2011*

**ant101**

As a cultural anthropologist what might you propose to research and would it be an Ethnology or Ethnography? What methods would you use to gather your data? What potential issues may you face while conducting your fieldwork and how would you deal with them?

*January 19, 2011*

**Math**

What is 7 1/4 minus 3 3/8?

*January 18, 2011*

**physics**

A child drops a coin from the window of a house.it strikes the ground 0,8 s later.what is the magnitude and direction of the coin's acceleration?

*January 18, 2011*

**Physical science**

A body falls from rest for 5seconds calculate its velocity-time graph of its motion (from t= 0s to t=5s)

*January 18, 2011*

**biology**

which process most likely caused the change in CO2 level in the flask over the lasy 37 minutes?

*January 17, 2011*

**math**

I thought 22 was the answer, but the part in my book about describe how to mentally check your answer threw me off

*January 4, 2011*

**math**

the diameter of a soup can is 7cm. the label wraps around the can. about how many centimeters long must the label be to go all the way around the soup can? use 22/7 for pi describe how to mentally check whether your answer is reasonable

*January 4, 2011*

**math**

what is 125% of 60?

*January 3, 2011*

**8th grade math**

the 14th day

*December 16, 2010*

**Chemistry**

I need a creative title for a lab report that deals with using dalton's partial pressure law in order to determine the amount of hydrogen gas that was collected over water. any ideas?

*December 15, 2010*

**7th grade**

what were the steps on mendels experiments with pea plants?

*December 9, 2010*

**Algebra**

if i am correct it should be 120 because its cross mutiplying so 6*20=120/1= 120

*December 2, 2010*

**9th grade geography**

what is the capital of alabama

*November 27, 2010*

**statistics**

SAT scores are normally distributed with a mean of 1518 and a standard deviation of 325. What scores correspond to P20 and P65?

*November 27, 2010*

**Physics-HELP PLEASE**

If I'm driving a car and I make a turn to the right, what will happen to a bag of items that is sitting next to me in the car-in terms of inertia, friction and centripetal force I think they will fall the opposite direction but we just started this unit and I don't ...

*November 21, 2010*

**Physics**

If I'm driving a car and I make a turn to the right, what will happen to a bag of items that is sitting next to me in the car-in terms of inertia, friction and centripetal force I think they will fall the opposite direction but why?

*November 21, 2010*

**geometry**

How do I draw an acute scalene triangle with lengths of 8cm, 10cm, and 16cm?

*November 13, 2010*

**4th grade**

Let n= any random number, then n-5

*November 11, 2010*

**science**

Words to use: Accelerate - Sliding - Brake - Friction - Slipping - Inertia Velocity - Wheel - Strength - Static - Terminal velocity Questions 1. An object will ____?____ when the net force is not zero. 2. ____?____ will never speed up an object. 3. The friction that prevents ...

*November 9, 2010*

**similiar figures**

the rul (x,3/4y) is applied to a polygon. Is the image similar to the original polygon?

*November 9, 2010*

**Science**

The gravitational force of any object near Earth is _____? A unknown B friction C Newton's First Law D 9,8m/s2 When you walk across a bridge, the _____ force of the bridge keeps it from breaking. A gravitational B normal C strong D weak A (n) _______________ helps reduce ...

*November 9, 2010*

**similar figures**

The rule (x,3/4y) is applied to a polygon. The given point is on the original polygon. Find the image of the point (6,8)

*November 9, 2010*

**chemistry**

A sample of an unknown gas effuses in 11.5 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.77 min. What is the molar mass of the unknown gas?

*November 1, 2010*

**science..physics**

I'm on a test..don't get me wrong physics is hard. Ha. A 10 kg sled is pulled horizontally by a force. If the coefficient of static friction is 0.3 , what force is needed to get the sled moving at a constant velocity?

*October 29, 2010*

**Science**

no really were all just in the library helping each other get ready for a bug chem test

*October 28, 2010*

**Science**

Constract a heating/cooling curve from an MSDS, draw multistep energy bar charts that correspond to the curve, and calculate the total. Energy released/ absorbed

*October 28, 2010*

**NEED HELP POSTED TWICE**

1. Find the slope of the line through the pair of points. (-1/3,0) and (-1/2,-1/2) Choices: -3 1/3 -1/3 3 2. Write in standard form an equation of the line passing through the given point with the given slope. Slope=8/7; (5,-3) Choices: -8/7x+y=-61/7 -8/7x-1=-61/7 -8/7x+y=61/7...

*October 18, 2010*

**Algebra 2**

1. Find the slope of the line through the pair of points. (-1/3,0) and (-1/2,-1/2) Choices: -3 1/3 -1/3 3 2. Write in standard form an equation of the line passing through the given point with the given slope. Slope=8/7; (5,-3) Choices: -8/7x+y=-61/7 -8/7x-1=-61/7 -8/7x+y=61/7...

*October 18, 2010*

**PHYSICS**

Jade you got to remember that it is accelerating downwards since gravity is -9.8 m/s. so it is not easy as that and I would think before you try and put your knowledge on the page.

*October 17, 2010*

**math**

Can someone explain to me how this question has the answer like this Points:(2,3) y=-2f[2(x+5)] - 4 The answers are (2, 3) ( 2, -3) -> (2, -6)-> (1, -6) -> (-4, -10) I know it has to do with translations like 1/k etc.. but im a bit confused ):

*October 13, 2010*

**3rd grade math (array)**

how i do (6)(4)

*October 7, 2010*

**algebra**

What is the answer to 7(d+5d) - 16d

*October 6, 2010*

**6th grade**

use the distbutive property to rewrite the expression as a product. 6+18y+24

*October 4, 2010*

**physics**

An airplane is flying with a speed of 240 km/hr at an angle of 27 degrees north of east. a) How fast is the plane flying north? b) How fast is the plane flying east?

*September 30, 2010*

**math**

6*6+6*6-6=24 Where would the parenthesis go?

*September 30, 2010*

**Chemistry**

Why does molarity depend on temperature?

*September 26, 2010*

**9th grade**

Around the time of the roman empire the terms inch, foot, and yard were refine. what was the length of a foot based on?

*September 24, 2010*

**algebra**

2y^-3 = 4e^(-x/2)/(1+e(-x/2)) my teacher gave this problem in my chem class and i don't know what he is really asking , does any one have an idea if i have to solve for y or what's going on..

*September 18, 2010*

**CALCULUS**

Use the product rule to calculate the derivative. dh dx x = 4 , h (x) = (x^(-1/2) + 7x)(9 - x^-1) very weird.. i know how to do it, i used product rule and got an answer in decimal but the website is not accepting it. Can any one help me?...

*September 18, 2010*

**chemistry**

how would one do this problem.. 2y^-3 = 4e^(-x/2)/(1+e(-x/2))

*September 18, 2010*

**Math**

What is 87 to the power of 8?

*September 17, 2010*

**physics**

if you are an observer moving at 3.2 m/s towards an object that is moving toward you at 1.4 m/s, what is the relative velocity of the object moving toward you?

*September 16, 2010*

**Physics**

The drawing shows an elastic cord attatched to two back teeth and stretched across a front tooth. The purpose of the arrangement is to apply a force to the front tooth. If the tension in the cord is 1.2N what are the magnitude and direction of the force applied to the front ...

*September 15, 2010*

**Math**

Yes, thank you. I was doing it that way, but didn't know if I was correct.

*September 14, 2010*

**Math**

Find: Re[1/(2+j)] Im[2+j/(3+4j)]

*September 14, 2010*

**History**

Yes or no. To have a favorable balance of trade, a country must sell fewer goods to other countries than it buys from other countries. Yes or no.Money is an example of an capital resource. Yes or no.In our economic system, people receive wages for producing goods or providing ...

*September 12, 2010*

**college math**

stratified sampling

*September 11, 2010*

**English**

I agree with SraJMcGin, that will give you the answers.

*September 8, 2010*

**Algebra 1**

Thank you Jen. U r great

*August 30, 2010*

**Algebra 1**

pythagorean theorema=13 b=9 c=?

*August 30, 2010*

**ARTICLES OF CONFED. - HISTORY**

How did the Confederation Congress attempt to colve the problem of staus of western territory that the states had ceded to it? Which interest groups favored which plans for the sale and distribution of land?

*August 30, 2010*

**Algebra**

Kate cut a 100-foot rope into two pieces. One piece was 5 feet longer than 4 times the length of the other. Find the length of each piece.

*August 26, 2010*

**math**

The height of a rocket in meters t seconds after it is launched is approximated by the polynomial 0.5 at2 + vt + y where a is always -9.8, v is the initial velocity, and h is the initial height. The 4400i was launched from the ground at the same time the Q99 was launched from ...

*August 16, 2010*

**math**

The height of a rocket in meters t seconds after it is launched is approximated by the polynomial 0.5 at2 + vt + y where a is always -9.8, v is the initial velocity, and h is the initial height. A 300X was launched from a height of 10 meters. What was its height after 3 seconds?

*August 16, 2010*

**english**

in the diary of anne frank. how does anne use imagery to describe both the environment of her hiding place and the people in it.

*August 11, 2010*

**English**

How does Anne use imagery to describe both the environment of her hiding place and the people in it?

*August 11, 2010*

**Math**

how do you find the fractional notation for the ratio of 54.28 to 89.69

*August 4, 2010*

**Geometry**

It should be D. If the hypotenuse and leg of a right triangle are congruent to the hypotenuse and leg of another right triangle, then the triangles are congruent

*June 29, 2010*

**math**

A 16-ft ladder is sliding down a wall as shown in the figures below. The variable h is the height of the ladder's top at time t, and x is the distance from the wall to the ladder's bottom. Suppose that the top is sliding down the wall at a rate 5 ft/s. Calculate dx/dt ...

*June 29, 2010*

**Statistics**

Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 ...

*June 26, 2010*

**Statistics**

Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 ...

*June 25, 2010*

**Statistics**

Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the probability that fewer than 45 ...

*June 25, 2010*

**Statistics**

. Suppose that about 20% of those called will find an excuse (work, poor health, travel out of town, etc.) to avoid jury duty. If 14 people are called for jury duty, what is the probability that all 14 will be available to serve on the jury? Round your answer to three decimal ...

*June 25, 2010*

**Statistics**

. As the sample size increases The confidence interval also increases (gets larger) The confidence interval decreases (gets smaller) The confidence interval stays the same The population mean increases.

*June 22, 2010*

**Statistics**

What is meant by the 95% confidence interval of the mean ? That 95% of my sample is OK to do more tests. That I am 95% confident that the confidence interval will contain the parameter being estimated. That 5% of my sample is not OK. That I am 95% sure that the population mean...

*June 22, 2010*

**Statistics**

Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six boxes. Is it appropriate...

*June 21, 2010*

**Statistics**

Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six boxes. Is it appropriate...

*June 21, 2010*

**Statistics**

Suppose that x has a distribution with = 10 and = 5. If a random sample is taken of size n = 44, find . 10.00 my answer was 0.75 is this correct 0.75 1.51 0.11 5.00

*June 20, 2010*

**Statistics**

. A certain company makes 12-volt car batteries. After many years of product testing, the company knows that the average life of a battery is normally distributed, with a mean of 45 months and a standard deviation of 7 months. If the company does not want to make refunds for ...

*June 20, 2010*

**Statistics**

Suppose I am using the t-distribution to estimate or test the mean of a sample from a single population. If the sample size is 25, then the degrees of freedom are ____? I have an answer of 26 is this correct

*June 17, 2010*

**Statistics**

Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six boxes. Is it appropriate...

*June 17, 2010*

**Statistics**

I am having trouble understanding standard normal distribution such as if p(z<-0.13) the answer to that was 0.4483 but not understanding how that is computed.

*June 17, 2010*

**Statistics**

Suppose a certain species bird has an average weight ofx=3.55 grams. Based on previous studies, we can assume that the weights of these birds have a normal distribution with 0=0.37 grams. For a small group of 15 birds, find the margin of error for a 70% confidence interval for...

*June 17, 2010*

**Statistics**

In a random sample of 508 judges, it was found that 281 were introverts. Let p represent the proportion of all judges who are introverts. Find a point estimate for p. Round your answer to four decimal places. I am needing assitance in trying to figure out the correct formula ...

*June 17, 2010*

**Statistics**

I am having trouble understanding standard normal distribution such as if p(z<-0.13) the answer to that was 0.4483 but not understanding how that is computed.

*June 17, 2010*