Tatiana
Popular questions and responses by Tatiana
Expected Value
A bag contains 2 gold marbles, 7 silver marbles, and 23 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. What is your expected
asked on October 6, 2016 
Expected Value?
A company estimates that 0.4% of their products will fail after the original warranty period but within 2 years of the purchase, with a replacement cost of $300. If they offer a 2 year extended warranty for $46, what is the company's expected value of each
asked on September 25, 2016 
Expected Value? Help
Kyd and North are playing a game. Kyd selects one card from a standard 52card deck. If Kyd selects a face card (Jack, Queen, or King), North pays him $4. If Kyd selects any other type of card, he pays North $3. a) What is Kyd's expected value for this
asked on September 25, 2016 
Expected Value
A bag contains 1 gold marbles, 10 silver marbles, and 29 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1. What is your
asked on September 25, 2016 
physics concepts (please check over my work)
A uniform cyclinder made of lead has the same mass and the same length as a uniform solid cylinder made of wood. The rotatonal inertia of the lead cylinder compared to the wooden one is: I thought at first that the rotational inertia cannot be known or
asked on December 9, 2006 
Physics
Three identical balls, with masses M, 2M, and 3M are fastened to a massless rod of length L as shown. The rotational inertia about the left end of the rod is: That's the layout below. Would calculus be needed in this problem (intergration) because then Im
asked on December 9, 2006 
English
Fire can be either friendly or a foe, depending on the situation. is this a correct paralell sentence
asked on March 12, 2013 
physics
A cart is propelled over an xy plane with acceleration components ax = 5.1 m/s2 and ay = 2.9 m/s2. Its initial velocity has components v0x = 8.2 m/s and v0y = 11.2 m/s. In unitvector notation, what is the velocity of the cart when it reaches its greatest
asked on October 7, 2012 
English
My sister Aliah is both a comic and smart. Parallel Sentence?....
asked on March 12, 2013 
physics
a cheetah can accelerate from rest to 24 m/s in 2.0 s . Assuming the acceleration is constant over the time interval, a)what is the magnitude of the acceleration of the cheetah? b) what is the distance traveled by the cheetah in these 2.0 s.? c) a runner
asked on September 21, 2010 
Home Economics
Q: How did conflict over the First and Second Banks of the United Sates reflect Federalist and Antifederalist views of government? Federalist view http://en.wikipedia.org/wiki/Federalist_Party_(United_States)
asked on April 16, 2007 
experimental psychology
Given that on one section of the SAT the mean is 500 and the standard deviation is 100, what is the approximate probability of a student scoring 600 or higher on the test? Round as appropriate.
asked on March 16, 2016 
Biology
In humans, the allele for brown eyes is dominant to the allele for blue eyes. If a man with blue eyes and a woman with brown eyes who is homozygous for eye color have children, what is the probability of having a child with blue eyes? Here are the choices:
asked on November 26, 2014 
English
Which of the following sentences contains an error in subjectverb agreement? a) Either Dennis or Susan is going to pick you up. B)Each of the 14 groups are going to contribute an item to the auction. C) Krisy, Molly, and Kate attend the same university
asked on August 24, 2015 
precalculus
solve cos 2x=secx for 0(
asked on October 27, 2011 
precalculus
How do I prove that sinx/sinx+cosx=tanx/1+tanx
asked on October 3, 2011 
precalculus
suppose a triangle has two sides of lengths a and b. if the angle between these sides varies, what is the maximum possible area that the triangle can attain? what can you say about the minimum possible area? could you explain by detail
asked on September 29, 2011 
chemistry
The growth of Pseudomonas bacteria is modeled as a firstorder process with K=0.035 min ^1 at 37 degrees C. The initial Pseudomonas population density is 1.0 x 10^3 cells/L. Enter your answers in scientific notations. A) What is the population density
asked on September 14, 2015 
English
Neither the searing pain in my toe nor the blinding rain in my face will keep me from finishing the race. Is this a correct parallel sentence?....
asked on March 12, 2013 
physics
A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
asked on October 7, 2012 
physics
A train at a constant 68.0 km/h moves east for 41 min, then in a direction 65.0° east of due north for 22.0 min, and then west for 60.0 min. What are the (a) magnitude (in km/h) and (b) angle (relative to north, with east of north positive and west of
asked on October 7, 2012 
Physics
A cannon ball is shot from a cannon with a horizontal velocity of 200m/s. What is the time until impact on a target 50m downrange? What is the objects horizontal velocity at impact (ignoring air resistance)?
asked on October 7, 2011 
7th grade
what did the electrician say after fixing a light bulb at the top of the empire state building?
asked on December 7, 2009 
living enviroment
how do yuh break the the spermatogenesis and get the meaning for example biology bio=life ; logy = study of
asked on November 3, 2009 
chemistry (please check/help)
How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. Volume variables (x) mL 0 1 3 1 10 30 100 We starting out with 100mM of X which would be considered its concentration. In order
asked on January 28, 2007 
physics
When you step on the accelerator to increase the speed of your car, the force that accelerates the car is eitheir the force of your foot on the accelerator, the force of friction of the road on the tires,the force of the engine on the drive shaft, or the
asked on November 18, 2006 
Energy (physics)
The wound spring of a clock would possess the same potential as kinetic energy. I am I correct in that statement. No. The wound spring has PE. Now what is this writing of KE? What is moving? how is it connected or related to the wound spring?
asked on November 5, 2006 
accounting
Eckman Company purchased equipment for $420,000 on January 1, 2016, and will use the doubledecliningbalance method of depreciation. It is estimated that the equipment will have a 5year life and a $2,000 salvage value at the end of its useful life. The
asked on October 26, 2019 
Physics
An object carries a charge of 6.4 µC, while another carries a charge of 2.0 µC. How many electrons must be transferred from the first to the second object so that both objects have the same charge?
asked on September 4, 2019 
Math
If he divides his land into square fields that are 1/3 mile long and 1/3 mile wide how many fields will he have
asked on August 26, 2019 
Math
Demonstrate the if f and g are onetoone functions then f°g is also onetoone
asked on September 21, 2018 
Math
Show that f is a function onetoone, if and only if f(x) = 0 for x=0. I cannot solve this demonstration, I know that if both elements are the same and their functions are the same, then is one to one, but in this case they only show me one element. Please
asked on September 19, 2018 
Social Studies
Why were Whig Congressman angry about the war? What did they accuse Polk of? Plz help
asked on February 22, 2017 
science
Which of the following is an example of an environment pressure
asked on December 1, 2016 
Math
Express the following in term of sum (or difference)of logarithms: log (10A)/(7B^2)
asked on August 2, 2014 
social studies
What doctrine of rights did both the "no incorporation" justices and the "plus incorporation" justices use to expand the notion of legal rights?
asked on February 12, 2014 
college calculus
I don't know how to solve this indefinite integral with both limits as variables: ^x^3 ç (z^4+1)dz ⌄ln(x) If you could explain I'd appreciate it.
asked on November 30, 2013 
English
The space shuttle was both a marvel and huge. Parallel Sentencce?....
asked on March 12, 2013 
English
According to some economists, neither high unemployment nor large deficits will keep the economy from rebounding. How to make this a parallel sentence?
asked on March 12, 2013 
physics
A baseball leaves a pitcher's hand horizontally at a speed of 115 km/h. The distance to the batter is 18.3 m. (Ignore the effect of air resistance.) (a) How long does the ball take to travel the first half of that distance? (b) The second half? (c) How far
asked on October 7, 2012 
physics
A plane flies 475 km east from city A to city B in 50.0 min and then 986 km south from city B to city C in 1.00 h. For the total trip, what are the (a) magnitude (in km) and (b) direction of the plane's displacement, the (c) magnitude (in km/h) and (d)
asked on October 7, 2012 
physics
Some hydrogen gas is enclosed within a chamber being held at 200 whose volume is 0.0250 . Initially, the pressure in the gas is (14.8 ). The chamber is removed from the heat source and allowed to cool until the pressure in the gas falls to . At what
asked on September 9, 2012 
prealgebra
how long will it take to earn $568.75 in interest if $2500 is invested at a 6.5% annual interest rate
asked on March 23, 2012 
conics
given A(6,8) and B(6,8) write an equation in terms of x and y for all points P(x,y) such that segment PA is perpendicular to segment PB. simplify the equation and interpret your answer.
asked on March 23, 2012 
conics
given O(0,0) and N(12,0) write an equation in terms of x and y for all points P(x,y) such that segment PO is perpendicular to segment PN. simplify this equation and show that P is on a circle.
asked on March 22, 2012 
math
given O(0,0) and N(12,0) write an equation in terms of x and y for all points P(x,y) such that segment PO is perpendicular to segment PN. simplify this equation and show that P is on a circle.
asked on March 22, 2012 
precalculus
a ship passes by buoy b which is known to be 3000 yd from peninsula p. the ship is steaming east along line be and angle pbe is measured as 28 degrees. after 10 min., the ship is at s and angle pse is measured as 63 degrees. how far from the peninsula is
asked on October 5, 2011 
precalculus
in Triangle abc, tanA=3/4, tan B=1, and a=10. find b in simplest radical form.
asked on October 3, 2011 
precalculus
suppose a triangle has two sides of lengths a and b. if the angle between these sides varies, what is the maximum possible area that the triangle can attain? what can you say about the minimum possible area?
asked on September 28, 2011 
precalculus
find the area of the segment formed by a chord 24 cm long in a circle of radius 13 cm.
asked on September 28, 2011 
math
put in order from least to greatest; 3/3, 3/5, 3/6, 3/8
asked on September 14, 2011 
Maths
So if I'm using the area 8558.25 in that math I need to have it as 8558.25squared and then sqaure root it?
asked on April 24, 2011 
Check my math please
Total Rainfall = rainfall mm x area covered In order to ensure that our values are correct we will need to convert the area covered (the total area of the two tanks) from metres into millimetres. We will also need to convert the total rainfall (KL) into
asked on April 23, 2011 
Math
Okay so I'm trying to work out how many mm of rain fell in a certain area. I've got the total volume/capacity that fell (3.51125KL) and the total area that it fell in (8558.25m). My formula is Total Rainfall = rainfall mm x area covered How would I make
asked on April 23, 2011 
Math
Hey I'm working on a math assignment and I'm trying to work out the total amount of rainfall that fell in a certain area. Would this formula be correct? Total rainfall = rainfall mm x duration of storm minutes x area covered And with my rainfall mm I
asked on April 23, 2011 
science
Where can I get any good scientific journals which might have info on dingoes
asked on April 19, 2011 
math
can someone plzz tell me whichone is true. just but down the number when u answer back plzz & thank you 1. 14+(25)> 50= 2. 20*10^3 3. 3/4 + 3/4> 1 4. 6^2=2^6 5. 21(39)=60 6. 19 7. 11*11*11 = 33^3 8. 38
asked on February 24, 2011 
chemistry
I have a lot of trouble doing this chemistry exercise It says: The altitude of the lake affects the solubility of oxygen in lakes high in the alps. if the solubility of O2 from the air is 7.89 mg/L M at sea level and 25C, what is the solubility of O2 in
asked on February 11, 2011 
history maps
1 5/8 inches represents about how many miles on the scale bar on the political map legend? 3.8 centimeters represents about how many kilometers?
asked on November 19, 2010 
Physics
The space shuttle releases a satellite into a circular orbit 440 km above the Earth. How fast must the shuttle be moving (relative to Earth) when the release occurs?
asked on October 11, 2010 
World History
What started the civil war in china?
asked on March 21, 2010 
World History
How was mao's vision of communism different from that of lenin?
asked on March 21, 2010 
world history
What single event set in motion the start of WW1?
asked on March 21, 2010 
US History
In what ways did the progressive belief in using experts played a role in shaping roosvelts reforms?
asked on March 2, 2010 
science
Why was the discovery of microspheres and coacervates an important contribution to the understanding of how life might have originated on Earth?
asked on February 22, 2010 
math
what did the donut say to the filling?
asked on December 6, 2009 
chemistry
A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what
asked on October 29, 2009 
english
NEED TO DO SENTENCES WITH THESE WORDS] USING,WAVE,MOAN,CLOSE,DREAM,TRADING,SKATE,LOOK,SKATING,TRADE,CLEAN,WRITING.
asked on March 4, 2009 
Algebra
z^528z^3+27z=0 How do you use variable substitution and factoring to find all of the roots of this equation? I know how to do it if the z would have only been to the fourth power, but how do you do it with an odd numbered power like this? Thanks!!
asked on January 18, 2009 
Algebra
What do you do in synthetic division when there's a two digit number? For example, this is what I'm synthetically dividing 3 2 5 7 3 3 1 8 8 times three is 24, so what should I do? Thanks for your help Tatie
asked on January 18, 2009 
Algebra
How come log5 25^4 reduces to 4 log5 25 then 4 times 2 then finally eight?
asked on January 17, 2009 
Algebra
We are learning using the log button in algebra. I have a TI83 calculator. My book says that log10 85 (there is no space between thet 10 and the 85, that's just to show the different numbers) is equal to 1.93 approximately. But I got 85. How do you
asked on January 17, 2009 
math
how do you find the plot the slope and yintercept 2y=4x4
asked on July 25, 2008 
social studies
how did events in the west help the Patriots' cause?
asked on May 19, 2008 
math
How do you soleve radicals
asked on March 4, 2008 
englise
i need help with home work and i don't know what some of the stuff means i can Help tatiana i got an A in english Please ask specific questions and include what you think the answers might be. Someone here will be happy to help you. =)
asked on May 31, 2007 
economics
What were the original causes of the u.s. trade deficit? Help please ASAP Check this site. (Broken Link Removed)
asked on April 24, 2007 
Economics
How did the Four Modernizations make the Chinese economy more like the U.S. free enterprise system? Check this site for some information. http://en.wikipedia.org/wiki/Four_Modernizations
asked on April 19, 2007 
Economics
What were the drawbacks of central planning in the former Soviet Union...Plz help ASAP LUV tatiana It was political, as opposed to practical. It relied on false data, provided politically correct. It failed to allow for market forces, producing much that
asked on April 19, 2007 
chemistry (work shown)
How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. Volume variables (x) mL 0 1 3 1 10 30 100 We starting out with 100mM of X which would be considered its concentration. In order
asked on January 28, 2007 
Chemistry (please help)
How would you make a serial dilution if you have a starting value 100mM of X The are the values of X show different dilutions. I think she wants to know starting from 100mM of X how you would get the X values through a serial dilution. X 0 1 3 1 10 30 100
asked on January 28, 2007 
Chemistry (please help)
How would you make a serial dilution if you have 100mM of X These are the values of X that she gave. X 0 1 3 1 10 30 100 These are the values of X in the serial dilution. If you could help me out by start me off because I am kind of confused with the
asked on January 27, 2007 
please check over my work
A 2.5 kg stone is released from rest and falls toward earth. After 4s, the magnitude of its momentum is: My work: J=F*t =(F *t)= 24.5N * 4s F= 2.5 *9.81= 24.5 J=P P= 98kg m/s A sphere X, of mass 2kg, is moving to the right at 10m/s. Sphere Y, of mass 4 kg
asked on November 18, 2006 
physics
The homework question asks: which work woulf be required to stop a moving object: the intial speed, the intial kinetic energy of the object, the mass of the object times it acceleration, the mass of the object times its intials speed, or the square of the
asked on November 5, 2006 
physics
I had wrote that was because I was told that in the beginning of the spring being wound the PE=KE. Can I check a concept question, The amount of work required to stop a moving object would be equal to the mass of the object times it intial speed due to
asked on November 5, 2006

algebra
The answer is 56
posted on March 31, 2020 
History
I do not have thailand i have vietnam.
posted on November 21, 2019 
math
I don't know
posted on November 16, 2019 
Math
Ok so you guys good
posted on November 19, 2018 
math
What the answer
posted on July 13, 2018 
Science
The answer is postion #4
posted on June 18, 2018 
MatH HELP
How did you get .29629
posted on November 21, 2017 
english plz plz help
Ms.Sue , I just took the quiz. The right answers were: 1) D 2) C 3) B 4) C 5) A 6) B So stop calling people names and saying that they're lying. I just got a 100% on the quiz. Why do you even put answers here if you're just going to insult the other people
posted on September 20, 2017 
english
d
posted on March 28, 2017 
Math
If two trapezoids have the same area do they always have the same perimeter
posted on January 24, 2017 
math
I just need help !@#$%^&s
posted on January 19, 2017 
Math
add it up
posted on December 1, 2016 
Government
4) effective government cannot be run by politicians that base their public opinions on poll results.
posted on November 14, 2016 
Expected Value
Thanks
posted on October 6, 2016 
Expected Value? Help
For (a) I have 11.55 is this correct
posted on September 25, 2016