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September 21, 2014

Posts by Kate


Total # Posts: 1,686

pre calc need help
A square is drawn inside a square. Find the area of the square as a function of the radius of the circle
February 17, 2010

ALGEBRA
the value, v, of a shopkeeper's inventory software program is given by v = 1/2t + 6, where t is the number of years since the shopkeeper bought the program. What is the program worth 4 years after it is first purchased? Plot the point with the given t-value, 4
February 16, 2010

Biology
why did the nuclei enriched fraction appear in the centrifuge fraction spun at the slower speed? Why didn't this fraction contain only nuclei(Why wasn't it pure?)?
February 11, 2010

Economics
This chart shows the components of nominal GDP for the years 2000 and 2001. All figures are in billions of current dollars. -------------------------------------------------------------------------------- Components 2000 2001...
February 7, 2010

Precalculus
I hope that the back of the book is wrong the back of the book tells me that the answer is - SQRT(5)/5 I get positive square root( 5) divided by 5 can you tell me if the answer is positive or negative if it is negative can you please explain why? Thanks! tan (theta) = 4/3, pi...
February 7, 2010

College Physics
You have 20 and 80 (unit is the upside down U) resistors in a circuit with a 100 V battery. A)These resistors are parallel. Find the current through each resistor and the voltage drop across each resistor. B) These resistors are connected in series. Find the current through ...
February 7, 2010

College Physics
It worked! :D
February 7, 2010

College Physics
The power dissipated by a light bulb increases by 50 W when the potential difference applied across the light bulb increases from 50 V to 100 V. Find the resistance of the light bulb.
February 7, 2010

College Physics
Thanks for the help! And BTW, I am not switching my name.
February 4, 2010

College Physics
How do I solve this problem: A particular wire has a current of 10A. A) How many electrons pass a fixed point every 5 seconds? B)If a wire has a radius of 2 x 10^(-3) m and the electron drift speed is 2.63 x 10^(-5) m/s, determine the number density of electrons in the wire. ...
February 4, 2010

spanish 2
i have to use 10
January 30, 2010

spanish 2
I need help with making an comic strip with 10 verbs in sentences that are in past tense. Any ideas how to start it??
January 30, 2010

PreCalculus
Hi I need some assistance on this problem find the exact value do not use a calculator cot[(-5pi)/12] Here is my attempt RT = square root pi = 3.14... cot[(-5pi)/12]={tan[(-5pi)/12]}^-1={tan[(2pi)/12-(8pi)/12]}^-1={tan[pi/6-(2pi)/3]}^-1={(tan[pi/6]-tan[(2pi)/3])/(1+tan[pi/6]...
January 29, 2010

math
how do you graph x^2+4x-1
January 29, 2010

spanish 2
How do you say these sentences in spanish in past tense. The dog took the letters to the mailbox. The dog is driving to the mailbox. The dog is reading the letter.
January 28, 2010

Statistics
Please post your response in this question here is my original question that didn't get answered. h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 4 5 5 3 7 3 0
January 27, 2010

Statistics
I don't mind you showing me the caluclator key strokes to do this or show me the mathematical way whice ever thanks Here is a simple probability model for multiple-choice tests. Suppose that a student has probability p of correclty ansering a question chosen at random form...
January 26, 2010

pre calc
so what will be the solution
January 25, 2010

pre calc
find delta in each of the following case: tan delta=-0.75
January 25, 2010

pre calc
express the followinf trig functions in terms of an acute angle. (a) cos 143 degrees (b) tan 192 degrees
January 25, 2010

spanish 2
Which question is addressed to "usted" (talking to someone with formal respect)? Con quien hablaste? ¿De qué hablaste? ¿Cuánto tiempo estuviste en el teléfono? Que compraste en la tienda? ¿Que hiciste después ¿...
January 24, 2010

biology
need help If one strand of DNA, had bases ordered ATCCGTC, what would be the bases of its other strand? Compare and contrast mitosis and meiosis as to: number of divisions, number of cells produced, number of chromosomes in parent cells and in gametes.
January 23, 2010

biology
Need Help with these questions If one strand of DNA, had bases ordered ATCCGTC, what would be the bases of its other strand? Compare and contrast mitosis and meiosis as to: number of divisions, number of cells produced, number of chromosomes in parent cells and in gametes.
January 22, 2010

spanish 2
I need help to translate these sentences in the past tense. What did you talk about? Did you go to sleep when you got off the phone? How long was you on the phone for?
January 21, 2010

pre calc
is 270 degreees equal to 3 pi/2
January 21, 2010

pre calc
so 150 degrees is 5 pi/6 and 180 degrees = pi
January 21, 2010

pre calc
Convert the following from degrees to radians leave your answer in terms of pi 150 degrees and 180 degrees
January 21, 2010

Physics
were did this come from this is a momentum problem After some messey algebra it can be said that V_B = (2 m_A V_o_A)/(m_A + m_B) V_A = ( (M_A - M_B ) V_o_A )/(M_A + M_B) were did this come from??? were _B indicates a quantity realtive to B and _A indicates a quantity realitve ...
January 18, 2010

physics
A mass on the end of a spring is stretched a distance Xo from equilibrium and released. At what distance form equilbrium will it have (a) velocity equal to half its maximum velocity and (b) acceleratipon equal to half its maximum acceleration ? I understand (b) that's just...
January 18, 2010

physics
well know it's posting it twice :O
January 18, 2010

physics
ok i'm putting in physics it'll most likely change it watch A fisherman's scale stretches 2.8 cm when a 3.7-kg fish hangs from it. (a) What is the spring constant? (b) What will be the amplitude and frequency of vibration fi the fish is pulled down 2.5 cm more and ...
January 18, 2010

physics
A fisherman's scale stretches 2.8 cm when a 3.7-kg fish hangs from it. (a) What is the spring constant? (b) What will be the amplitude and frequency of vibration fi the fish is pulled down 2.5 cm more and released so that it vibrates up and down? I have a question about ...
January 18, 2010

physics
i did for some reason it changes it
January 18, 2010

jishka
A fisherman's scale stretches 2.8 cm when a 3.7-kg fish hangs from it. (a) What is the spring constant? (b) What will be the amplitude and frequency of vibration fi the fish is pulled down 2.5 cm more and released so that it vibrates up and down? I have a question about ...
January 18, 2010

algebra
so what are the 2 numbers
January 15, 2010

algebra
yes
January 15, 2010

algebra
One number is 4 times and then positive number. The sum of the two numbers is 620. Find the two numbers.
January 15, 2010

PreCalculus
post answer in this question so that way i don't have to search h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 3 4 9 4 6 3 7
January 14, 2010

geometry
Find the other endpoint of a line segment with the given midpoint and one endpoint. Endpoint: ( 6, -1); Midpoint:(15/2,2
January 14, 2010

Algebra
Can someone help me with this question. I thought it was quadratic but now I am not sure. State whether the equation represents a linear, quadratic, exponential function or none of the above. x^2+ 6 = -8 x
January 14, 2010

spanish 2
can you check these Ella gustar bailar yo gustar bailar nosotros gustar bailar Ellos gustar bailar
January 12, 2010

spanish 2
How do you say She like to dance. in these forms yo you you spoke (formal) = usted (el,ella) we they
January 12, 2010

Physics (algebra bit)
supposively the ansswer is 9.9 m/s and 4.9 m/s i do not see how to get these solutions
January 11, 2010

Physics (algebra bit)
I do not see how to do this problem One car has twice the mass of a second car, but only half a smuch kinetic energy. when both cars increase their speads by 7.0 m/s, they then have the sam kinetic energy. What were the original speeds of the cars?
January 11, 2010

algebra
what is the key sequence you would use on your calculator to solve 4x - 17 = 83
January 11, 2010

Algebra
Is this relationship linear? Tell how you decided. Write the equation for each linear relationship. X 1, 2, 5, 8, 10, 11 Y 1.5, 2.5, 5.5, 8.5, 10.5, 11.5
January 11, 2010

Algebra
I'm wanting to take the arctan of this by the way can i simplify this or express this into more simpler terms
January 10, 2010

spanish
what is the verb ending for the following verbos: llevar ganar caminar montar
January 10, 2010

algebra
how would I write an equation for the following linear relationships: (x5,y20),(x10,y30)(x15,y40)(x20,y50)(x25,y50)(x30,y50)
January 8, 2010

Algebra
The Political Noise Problem. The amount of background noise is important to television news reporters. One station developed the formula N=-t^2+12t+54 showing the noise level in decibels (N) as it relates to the time after the speaker stops talking in seconds (t). How many ...
January 8, 2010

algebra
The Political Noise Problem. The amount of background noise is important to television news reporters. One station developed the formula N = -r^ + 12t + 54 showing the noise level in decibels (N) as it relates to the time after the speaker stops talking in seconds (t). How ...
January 8, 2010

algebra
how would I write an equation for the following linear relationships: (x5,y20),(x10,y30)(x15,y40)(x20,y50)(x25,y50)(x30,y50)
January 8, 2010

english
3. going 4. give
January 7, 2010

english
3. going to 4. give you
January 7, 2010

english
3. going to the Gallery 4. give you the assignment?
January 7, 2010

english
Write down the COMPLETE VERB(s) in each of the following sentences. 1. She had been going to the mall. 2. The class seems to be learning! 3. We might be going to the Gallery later. 4. Did I not give you the assignment? 5. Did I not give you the assignment?
January 7, 2010

algebra
look at that like a fractiion byy the waay!!
January 7, 2010

algebra
5 6 - x - = 30 10 21 21 -- -> -- 441 147 there you go(:
January 7, 2010

math
a man has 6 houses, in each house he has 6 cats, Each cat has 6 whiskers on each whisker sits 6 fleas. How many in all?
January 7, 2010

Physics
If I wanted to right SIGMA F = ma in the proper notation what would I put above and below SIGMA Would I put a lower case "n" above SIGMA and "i = 0" below it and then put a subscript "i" under the "F" thank you I have been woundering ...
January 6, 2010

Physics
If I wanted to right SIGMA F = ma in the proper notation what would I put above and below SIGMA Would I put a lower case "n" above SIGMA and "i = 0" below it and then put a subscript "i" under the "F" thank you I have been woundering ...
January 6, 2010

voting
What are 3 pieces of information requested on a PA voter registration card? Name the 5 positions that comprise(or make up) an Election Board.
January 6, 2010

Precalculus
Hello, Thanks for all of the help guys. I really appreciate it. I was woudnering if you could show me how to do this step by step and the thought process that goes through your head while you do this. This way I will be able to try to solve some of these problems on my own ...
January 5, 2010

spanish 2
Choose the correct form of the verb for each sentence! decidir(to decide) Nadie ______________ su destino. Nobody decides his/her destiny.
January 5, 2010

Precalculus
this was the answer in the back book. I do not see how to get this though 5(x + 3)(x - 2)^2 (x + 1)
January 5, 2010

Precalculus
Factor completely 2(3x - 5)3(2x + 1)^3 + (3x - 5)^2 (3)(2x + 1)^2 (2) I'm not really sure how to do this problem I started out by rewriting this 6(2x + 1)^3(3x -5) + 6(3x - 5)^2(2x + 1)^2 I am unsure were do go from here...
January 5, 2010

Physics
[b]1. The problem statement, all variables and given/known data[/b] A 90 N sign hangs on the end of a 55 N beam supported by a wire as shown. The beam is attached to the wall by a hinge. What are the horizontal and vertical componetns of the force on the hinge? Notes: the sign...
January 5, 2010

Physics
Satna has delivered gifts to the good Atlatean children. Now his erindeer need to lift him out of the ocean. The density of ocean water is 1.025 g/cm^3 . Sant'as sled has a mass of 337 kg. Santa has a mass of 104 kg. Their combined volume .39 m^3. How hard do the reindeer ...
January 5, 2010

physics
i meant that sant's final velocity will be zero when both their masses are the same by the way not both of them only santas will be zero when they have the same masses
January 5, 2010

physics
Driving his sled in the dark, Santa(s) collides with a polar bear (b). After some messy algebra, it can be shown that: Vb = (2 ms Vos)/(ms + mb) Vs = ((ms - mb)Vos)/(ms + mb) What does this imply if Santa hi a cub? What does this imply if Santa and the bear are the same mass? ...
January 5, 2010

Physics
I believe I've done this right A penguin sildes 1.5 m/s across the ice on her belly. The coefficient of kinetic friction is .02 How far will she slide before stopping? I do not need to see the work to this problem just need to know if I did it right. I got about 5.7 m I am...
January 5, 2010

pre calc
Find two functions defined implicitly by the given relations: (a) 3x² - y² = 25 (b) y² = x
January 5, 2010

pre calc
given x=t^2 and y=t-2 find a relationship between x amd y( express y in terms of x) is the relationship a function
January 4, 2010

math
like i know i need the shares outstanding but am unsure of which one so could you please show me how to perform this calculation using the values on this website and what value exactly i'm suppose to use as there are many of the same name with like different variations i ...
January 4, 2010

math
i've been asked to ifnd the price-earning ratio of some stocks i'm unsure of how to do this I do not know which EPS value to use as I found some valeus on a website... Like for this company that I got a stock for h t t p : / / w w w . m a r k e t w a t c h . c o m / i ...
January 4, 2010

pre calc
so that is the answer for a and b
January 4, 2010

pre calc
let f(x)= e^x and g(x)= sqaure root x
January 4, 2010

pre calc
Example 1: Let f(x) = ex and g(x) = ãx Find: (a) f(g(x)) (b) g(f(x))
January 4, 2010

Math
just in general when I'm asked to sovle for X in a equation that is set to zero it's not really set to zero at all is it??? X^2 + 4X - 1 = 0 really what this is saying X^2 + 4X - 1 = dy right???
January 3, 2010

Math
h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 2 5 5 3 0 8 2
January 3, 2010

Math
ok so i'm kinda sort of confused... I had this for a equation X^2 + 4X - 1 = 0 and then I was like zero??? zero... really zero... hmm... X^2 + 4X - 1 = dy ???????? That zero does represent when Y equals zero correct??? this allows us to solve for X OH!!!!!!!!!!!!!! wait so...
January 3, 2010

Math
I haven't done factoring in ages I'm trying to factor this X^2 - 2X + 8 If i remeber correctly sense the leading coefficent is 1 the factored form is in this format (X-A)(X-B) which would give you X^2 -AX - Bx + AB or simply X^2 -(A+B)X +AB so then in my problem -(A+B)...
January 3, 2010

Math
what is the difference between an equal sign with another line above it and an equal sign with a triangle above it. I was alway taught that the three lines symbolized identity and that the equal sign with a traingle above it signified definition when would you use the three ...
January 2, 2010

English
I'm having a little bit of trouble with Adventures of Huckleberry Finn I don't believe you have to know the story to help me answer this question. This is from chapter 18 and is like one of the first lines. "He was well born, as teh saying is, and that's worth...
January 2, 2010

Algebra
why is this a ture statement (A B^2)/C - B^2 =B^2 (A/C-1) by the way that is (A/C)-1
December 23, 2009

math
A water delivery truck with a cylindrical tank measuring 8 ft in diameter and long dispenses water to drought victims in cartons measuring 6 in. × 6 in. × 12 in. How many victims will get a full container of water?
December 20, 2009

math
A water delivery truck with a cylindrical tank measuring 8 ft in diameter and long dispenses water to drought victims in cartons measuring 6 in. × 6 in. × 12 in. How many victims will get a full container of water?
December 20, 2009

math
Alonso can't decide which size pizza to order. The 10-inch cheese and sausage pizza is $7.99, while the 12-inch deluxe is $8.99. The dimensions given are the diameters of the pizzas. If he gets the 10-inch pizza, the total price will be divided among 3 people. If he ...
December 20, 2009

math
A spherical tree ornament is to be painted in bright colors. If the ornament has a diameter of 4 cm, how much paint is needed?
December 20, 2009

math
One-half serving of soy sauce contains 389 milligrams of sodium. How many grams of sodium from soy sauce are included in an egg-foo-young dish made from 4 servings of soy sauce? Round results to the nearest tenth of a gram.
December 20, 2009

math
A toy baseball bat comes with 3 plastic balls in a box that is a rectangular solid. The box is just big enough to hold the 3 balls. The radius of the balls is 1.9 in. What is the volume of the air in the box surrounding the balls?
December 20, 2009

pre calc
Which three of the twelve basic functions are bounded( above and below)? Three of the tweleve basic functions are even. Which are they?
December 17, 2009

Physics
18. (II) At a steam power plant, steam engines work in pairs, the heat output of the first one being the approximate ehat input of the second. Th eoperating temeprautres of the first are 680 degrees C and 430 degrees C, and of the second 415 degrees C and 280 degrees C. If the...
December 16, 2009

pre calc
find all local maxima and minima (the y-values) and the vales where they occur g(x) x absolute value 2x+5 absolute value
December 15, 2009

physic
the useful carry of a racket is as 5% of all its mass,the other part is fuel.if the racket start moving from the static state, without the effect of F(est) [esternal forces] how is the finalize velocity if the velocity Usc is 5 km/s
December 7, 2009

Math
If the odds in favor of an event A are 3 to 1, what is the probability associated with event A occurring?
December 4, 2009

math
a train left podunk and traveled north at 75 km/h. two hours later, another train left podunk and travled in the same direction at 100 km/h. how many hours had the first train traveled when the second train overtook it? can someone help set this up?
December 3, 2009

math
Got it. Thank you very much
December 3, 2009

math
where did you get 140 from?
December 3, 2009

math
A train left Podunk and traveled west at 70 km/h. Two hours later, another train left Podunk and traveled east at 90 km/h. How many hours had the first train traveled when they were 1420 km apart? How do you solved this?
December 3, 2009

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