Wednesday

January 18, 2017
Total # Posts: 872

**Math**

First find the general derivative of f (x) = (√x −1) . Then find the equation of the tangent line to the graph at x = 10.

*April 26, 2011*

**algebra**

Part $30000 is invested at 6% another part at 7% and the remainder at 8% yearly interest the total yearly income from the 3 investments is $2200

*April 24, 2011*

**algebra**

Melinda invested three times as much money at 9% yearly interest as she did at 7%. her total yearly interest from the two investments was 170$ How much did she invest at each rate Thanks !!

*April 24, 2011*

**Algebra**

X+y+z=2200

*April 24, 2011*

**Algebra**

Not really having trouble with this one for some reason

*April 24, 2011*

**Algebra**

Sam invested $1950 part of it at 6% and the rest at 8% yearly interest. The yearly income on the 8% invest was 6$ more then twice the income from the 6% investment. how much did he invest at each rate

*April 24, 2011*

**Math**

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

*April 15, 2011*

**Math**

Of the first graders who were asked, 1/6 like math best, 2/3 liked reading best, and 12 liked science best. How many were asked their favorite subject?

*April 15, 2011*

**PHYSICS**

A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the drawing. As the station rotates, an astronaut in chamber A is moved 3.18 102 m along a circular arc. How far along a circular arc is an astronaut in chamber B moved during ...

*April 2, 2011*

**math**

what household items come in fourths or halves?

*March 31, 2011*

**Math**

second one

*March 30, 2011*

**Math**

how do you solve: m=a+b/2

*March 30, 2011*

**science**

A cylindrical bottle of oil-and-vinegar salad dressing whose volume is 1/3 vinegar (p=1.01 g/cm^3) and 2/3 oil (p=.910 g/cm^3) is at rest on a table. Initially the oil and the vinegar are separated, with the oil floating on top of the vinegar. The bottle is shaken so that the ...

*March 29, 2011*

**Physics**

two point masses are located in the same plane. the distance from mass 1 to the center of mass is 3.0m. The distance from mass 2 to the center of mass is 1.0m. What is m1/m2, the ratio of mass 1 to mass 2?

*March 29, 2011*

**Math**

how did you get 114???

*March 29, 2011*

**Math**

A circular garden has an area of 25π m2 If the . radius is increased by two meters, and fencing is sold only in one meter sections, how much fencing is needed to keep out the rabbits?

*March 29, 2011*

**Math**

man than i must such at math than...oh well sorry megan .

*March 29, 2011*

**Math**

the percent i think is because in the early days the price wasn't that high or expensive as today. my bad, heres my other, i think, ummm.... to start 10000 so if you add 10000 to 25000= 35000 then, 35000+89000=124000 nest, 124000+265000=389000 i'm guessing the total ...

*March 29, 2011*

**Math**

i'm guessing to Megan that it is 717.7%???

*March 29, 2011*

**Math**

just wondering...

*March 29, 2011*

**Math**

so than... 70's to 80's - 265000 increase 265000/124000=2.137= 213.7% Right?

*March 29, 2011*

**Math**

How do you know how many units are spread between the intervals? (For instance, 120-129, 130-139, units spread by 10) How would we answer this question? Thirty AA batteries were tested to determine how long they would last. The results, to the nearest minute, were recorded as ...

*March 27, 2011*

**Physics**

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air ...

*March 23, 2011*

**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*