Questions Asked on October 8, 2009

x is a random variable with the probability function: f(X) = x/6for x = 1, 2 or 3 the expected value of X is?
1. 3 answers
2. asked by Shellie
3. 13,178 views
I have to write an essay on this topic:54. Compare and Contrast Switzerland and France in terms of language and culture. Before
1. 7 answers
2. asked by mysterychicken
3. 4,058 views
A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.30 m above. The keys are caught
1. 2 answers
2. asked by blair
3. 3,861 views
Please help me out, I can't figure out the process for answering this question and my TA is of no help,A 0.11- ball is placed in
1. 3 answers
2. asked by Matthew
3. 3,824 views
The perimeter of a rectangle is 42 feet and its length is 3 feet less than 5 times its width find the dimensions of rectengle
1. 2 answers
2. asked by hamza
3. 2,702 views
A person walks first at a constant speed of 4.70 m/s along a straight line from point A to point B and then back along the line
1. 3 answers
2. asked by Zoe
3. 2,359 views
I have no idea how to do this. Anyone help?A cyclist passes a race check point at +5.5m/s and then accelerates ata constant rate
1. 1 answer
2. asked by me
3. 2,327 views
1. What about today's society reinforces American civic values?2. What about today's society undermines American civic values?
1. 2 answers
2. asked by In great need of help
3. 2,294 views
At what altitude above the Earth's surface is the acceleration due to gravity equal to g/128?i did g/128=(G*Earth's mass)/r^2
1. 1 answer
2. asked by jawn
3. 2,176 views
Two cards are drawn with replacement from an ordinary deck of 52 playing cards. What is the probability that the first card is a
1. 2 answers
2. asked by Gerry
3. 2,118 views
A pizza shop offers nine toppings. No topping is used more than once. What is the probability that the toppings are pepperoni,
1. 1 answer
2. asked by Sharon
3. 2,095 views
Given the following equations:2 H2 (g) + O2 (g)--> 2 H2O (l) deltaH = -571.6 kJ N2 (g) + O2 (g)-->2 NO (g) deltaH = +180.5 kJ N2
1. 1 answer
2. asked by Katherine
3. 2,006 views
How many different ways can 5 people be seated on a bench?
1. 3 answers
2. asked by Sharon
3. 1,897 views
How does one go about solving this?A skateboard rider starts from rest and accelerates at a constant +.50 m/s^2 for 8.4s. What
1. 2 answers
2. asked by brad
3. 1,787 views
Rewire each statement as two if-then statements that are converses of each other.18. Two angles are supplementary if and only if
1. 2 answers
2. asked by James
3. 1,780 views
a buffer composed of 0.50mol acetic acid and 0.50mol sodium acetate is diluted to a volume of 1.0L. The pH of the buffer is
1. 2 answers
2. asked by millie
3. 1,770 views
Which of the following functions have a derivative at x=0?I. y= absolute value(x^3-3x^2) II y= square root(x^2+.01)- absolute
1. 4 answers
2. asked by Mark
3. 1,706 views
a buffer is prepared by combining 10.0g of NaH2PO4 wiht 150mL of 0.20M NaOH and diluting to 2.0L. What is the pH of the buffer,
1. 3 answers
2. asked by kathryn
3. 1,591 views
The acceleration of a certain rocket is given by ax=bt where b is positive constant, find the position and velocity at t=5.0s if
1. 1 answer
2. asked by sally
3. 1,572 views
Using mechanics of materials principles (ie. equations of mechanical equilibrium applied to a free-body diagram), derive the
1. 1 answer
2. asked by Z32
3. 1,565 views
Alexander wants to know exactly how many bars to pack in his backpack for the journey. To provide a margin of safety, he assumes
1. 1 answer
2. asked by carla
3. 1,540 views
A person pushes a 16.0 kg lawn mower at constant speed with a force of 70.0 N directed along the handle, which is at an angle of
1. 1 answer
2. asked by DJ
3. 1,531 views
What is the number 1 essay writing rule?A.Edit and revise your essay. B.Always write five paragraphs. C.Always brainstorm before
1. 9 answers
2. asked by larry
3. 1,490 views
How many ways can 12 people be seated about a round table?
1. 1 answer
2. asked by Sharon
3. 1,393 views
How many electrons are transferred when C3H7OH burns in oxygen to form carbon dioxide and water?I have no idea where to start.
1. 2 answers
2. asked by Suzie
3. 1,356 views
This is another problem that I need clarification on since no one seems to be of any help at my school,A pulley system is used
1. 2 answers
2. asked by Matthew
3. 1,329 views
twice what number is equal to three times that number
1. 8 answers
2. asked by Mayah
3. 1,312 views
Jules Verne in 1865 suggested sending people to the Moonby firing a space capsule from a 220-m-long cannon with a launch speed
1. 1 answer
2. asked by aRd
3. 1,209 views
1. Capstone CheckPoint„h Due Date: Day 4 [Individual forum] „h Answer the following questions in a 100- to 200-word
1. 2 answers
2. asked by Anonymous
3. 1,207 views
Hi, I wrote the first one wrong...The hawks won 17 more hockey games than they lost. They played 52 games in all and had 3 ties.
1. 1 answer
2. asked by zoe
3. 1,180 views
Two children playing on the beach are pulling on an inner tube. One exerts a force of 45 N [N]. The other exerts a force of 60 N
1. 1 answer
2. asked by Molly
3. 1,177 views
what is the equation for the axis of symmetry for the function f(x)=IxI?(absolute value)
1. 2 answers
2. asked by Jared
3. 1,165 views
Write a projectile motion problem with the initial condition vi=15 m/s at 50° above the horizontal. Solve this problem for
1. 3 answers
2. asked by Help
3. 1,162 views
1. What is the most IMPORTANT key to an effective essay?A. A focused thesis sentence. B. Five paragraphs in the body. C.
1. 6 answers
2. asked by larry
3. 1,157 views
(i) What is binary tree (ii) Write a program to multiply any two matrices. (use any program of choice)
1. 1 answer
2. asked by Beta plus
3. 1,143 views
Joint probability density function is: x + y where 0<x<1 and 0<y<1 (0 elsewhere)Find variance of (30x + 25y) Answer is 11.48 ---
1. 0 answers
2. asked by Sean
3. 1,114 views
A small boat is headed a harbor 32km directly northwest of its current position when its suddenly engulfed in heavy fog. The
1. 2 answers
2. asked by Julie
3. 1,107 views
How do balance this equation K2S+CuSO4
1. 1 answer
2. asked by Ariel
3. 1,098 views
Open-top box. Thomas is going to make an open-top boxby cutting equal squares from the four corners of an 11 inch by 14 inch
1. 1 answer
2. asked by genevive
3. 1,089 views
cell's digestive enzymes are enclosed in a membrane-bound organelle how can these molecules fuction in the cell?
1. 2 answers
2. asked by ang
3. 1,080 views
I am solving X^4-3x^2+2=0 I factored it to be (x^2-2)(x+1)(x-1) as my book suggested. But why is it three sets of parentheses?
1. 1 answer
2. asked by Katie
3. 1,075 views
What are three examples of times when a society lost order and turned to chaos.(could be a city, country, prison setting, etc
1. 3 answers
2. asked by kim
3. 983 views
What are three examples of times when a society lost order and turned to chaos.(could be a city, country, prison setting, etc
1. 1 answer
2. asked by kate
3. 980 views
This is another problem that I need clarification on since no one seems to be of any help at my school,A pulley system is used
1. 2 answers
2. asked by Matthew
3. 945 views
Explain the difference between the following pairs ofgeometric figures: a simple closed curve and a nonsimple closed curve a
1. 1 answer
2. asked by thomas
3. 938 views
F25 = 75,025 and F26 = 121,393 where Fn is the nth term in the Fibonacci sequence. Find F27.
1. 1 answer
2. asked by chandice
3. 922 views
In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals
1. 3 answers
2. asked by Sarah
3. 919 views
If it has been determined that the probability of an earthquake occurring on a certain day in acertain area is 0.05, what are
1. 2 answers
2. asked by jessica
3. 884 views
one I'm excited and two is where its at threes all numbers but four gets the money five percent to look up at six and seven sees
1. 1 answer
2. asked by brandi
3. 883 views
1.What is the function of DNA?2.Name 3 parts of DNA molecule 3.Describe the shape of DNA molecule
1. 4 answers
2. asked by racheal
3. 860 views
Hi -I am suppose to write about a vacation - and have at least ten preterite verbs in it. please look this over for me are the
1. 1 answer
2. asked by sam
3. 860 views
which statement about australia minerals resources is accurate?A)australia contains rich mineral resources B)**australia mineral
1. 1 answer
2. asked by henry
3. 858 views
Im a Danish student, and I've written this summary which I would like someone to correct. Thanks in advance!In the short
1. 1 answer
2. asked by Jacob
3. 853 views
Determine the percent yeild of:KCl3(s)--> KCl(s)+ O2(g) 2.14g of KCl3 produces 0.67 of O2 I get 123% when the correct answer is
1. 3 answers
2. asked by Sara
3. 826 views
Two children playing on the beach are pulling on an inner tube. One exerts a force of 45 N [N]. The other exerts a force of 60 N
1. 5 answers
2. asked by Molly
3. 806 views
A table of the U.S. population in millions indicated in 1960 the population was 181 million, in 1970 the population was 205
1. 2 answers
2. asked by Stacy
3. 792 views
1.Which of the following is the most effective opening sentence for an introductory paragraph?A.I heard a loud sound before I
1. 3 answers
2. asked by larry
3. 790 views
Liz rushes down onto a subway platform to find her train already departing. She stops and watches the cars go by. Each car is
1. 2 answers
2. asked by blair
3. 790 views
Determine the mass of each reactant needed to give 1.5 mol of HNO3NO2(g)+H2O(l)---> HNO2(aq)+HNO3(aq)
1. 1 answer
2. asked by Sandy
3. 782 views
The hawks won 17 hockey games than they lost. They played 52 games in all and had a 3 ties. how many games did they lose?so 52
1. 2 answers
2. asked by zoe
3. 780 views
From a base elevation of 8200 ft. a mountain peak in colorado rises to a summit elevation of 14588 ft. over a horizonal distance
1. 6 answers
2. asked by Don
3. 779 views
What is the weight of a 76 kg astronaut on the Moon where the value of 'g' is only 17% the strength of 'g' on the Earth? (Answer
1. 3 answers
2. asked by moe
3. 769 views
my P.E. teacher asked the 100 seventh graders in my school if they could swim. Half of the boys and two thirds of the girls said
1. 2 answers
2. asked by Karl
3. 769 views
A British pharmaceutical company spent several years and considerable funds on the development of a treatment for HIV patients.
1. 2 answers
2. asked by Anonymous
3. 758 views
what are some active and passive voice verb example sentences
1. 2 answers
2. asked by jess
3. 743 views
After Jordan Brilliantly performed a challenging and emotionally vibrant violin concerto, the orchestra conductor proudly
1. 1 answer
2. asked by shelby
3. 739 views
1.Which of the following can dramatically improve your grade on an essay?A.Providing an outline. B.Choosing an effective thesis
1. 10 answers
2. asked by larry
3. 734 views
If a box contains 4 red poker chips and 3 blue. What is the probability that all 3 will be red if we randomly select each chip
1. 1 answer
2. asked by Sharon
3. 734 views
Complete with the correct form of the verb boire and finsh the sentence.Part 1 1. -Qu'est-ce que vous ---------? Answer: buvez
1. 2 answers
2. asked by an unknown french girl
3. 730 views
Are the highland and Midwest region of the united states similar in climates?
1. 1 answer
2. asked by Christine smith
3. 728 views
A woman throws a ball at a vertical wall 40m away the ball is 20m above the ground when it leaves woman's hand with an initial
1. 1 answer
2. asked by Tina
3. 728 views
True or false? In every triangle, the centroid, incenter, and circumcenter are collinear.
1. 1 answer
2. asked by thomas
3. 722 views
Do you guys know of a website where i can find the average temperature of these biomes?Tundra, Tiaga, Temperate Deciduous
1. 1 answer
2. asked by Nicole
3. 721 views
Can you please check these thanksDirections: Moi: Donnez des réponses personnelles. 1. Tu dois boire beaucoup d'eau? Answer:
1. 1 answer
2. asked by an unknown french girl
3. 714 views
2.75+.003+.158=
1. 4 answers
2. asked by Anonymous
3. 705 views
Studying South Carolina in the 1600 to 1700s and need physical features, landforms, bodies of water and natural resources such
1. 1 answer
2. asked by Cheyenne
3. 705 views
decide whether the graphs of the two equations are parallel lines:1. 2x+3y=5 9y+6x-1=0 answer: yes 2. 15+3x-10y=0 30x+24=10y
1. 3 answers
2. asked by emma green
3. 698 views
is technology a hinderance or an advantage?The lifesyle of people ten years ago is certainly different from their lifestyle now.
1. 10 answers
2. asked by Ashlynn
3. 695 views
What are the elements of the accounting environment? How do they affect the financial statements? Why are these elements
1. 2 answers
2. asked by Krysta
3. 681 views
I have to figure out how x^3+216=0 is factored, and what potential solutions might be. I factored it like this:
1. 1 answer
2. asked by Katie
3. 679 views
Find the point of intersection between y=2-(1/2)x and y=1+ax. (a=alpha sign). You answer will be a point in the xy plane whose
1. 3 answers
2. asked by SC
3. 656 views
what are nutrients?
1. 1 answer
2. asked by nadene
3. 653 views
The United States emitted 19.5 million t of nitrogen oxides (No) into the atmosphere in 1987. One metric to (1t) equals 1,000
1. 1 answer
2. asked by shauna
3. 642 views
r^2the corelation squared measures how well the y hat is than just using y bar or the other way around... I don't remeber what
1. 1 answer
2. asked by Statistics
3. 628 views
explain how to give the measurement in centimeters of a 56 mm object
1. 2 answers
2. asked by De'Ja
3. 627 views
The acceleration of a certain rocket is given by a=bt where b is positive cnstant, find the position function Xo and Vo at t=o?
1. 1 answer
2. asked by sally
3. 626 views
Give a fact about each of the following points associatedwith a triangle: a. incenter b. circumcenter c. orthocenter d. centroid
1. 1 answer
2. asked by chandice
3. 625 views
I need to compare and contrast the ideas and pilosophies of the Federalists and Antifederalists!
1. 1 answer
2. asked by Terra
3. 624 views
Whatare 3 levels that gepgraphers might study? Which one of these levels covers the largest?How might sattelite images and
1. 10 answers
2. asked by challie
3. 618 views
can you please look this over one more time not sure if it is en la mejoriamento and is batida brutalamente correct. i am so
1. 1 answer
2. asked by sam
3. 612 views
how would i begin this problem...graph the equation and identify the y-intercept. y+x=-5 I would first rewrite that into: y=x-5
1. 4 answers
2. asked by Kathy
3. 611 views
What do the Nile valley and Mesopotamian civilizations have in common?
1. 1 answer
2. asked by Shavaleir
3. 609 views
Can someone check my work?English: My cousin came over to play. We were running around the living room. My brother and cousin
1. 1 answer
2. asked by Larry
3. 609 views
Mr Mike plants cabbages in a square grid so that the number of rows and columns are equal. He increased the size of his garden
1. 1 answer
2. asked by Kathryn
3. 607 views
A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to
1. 0 answers
2. asked by jig
3. 600 views
What impact does terrorism and cyber crimes have on interpreting the fourth amendment?
1. 1 answer
2. asked by Dale
3. 599 views
Is the increased heart rate and blood pressure after exercise a feedforward or feedback mechanism?Can someone actually also
1. 1 answer
2. asked by Alex
3. 597 views
Suppose that when a job candidate comes to interview for a job at, say McDonald's, the probability that the candidate will want
1. 1 answer
2. asked by Sharon
3. 596 views
I have to simplify this:(x^(1/2) * z^(-4/5)^4 My work: x^2/z^(16/5) Correct? Simplify (3+5SQRT2)(4+SQRT10) I have no idea how to
1. 0 answers
2. asked by Dan
3. 594 views
find the slope of the line containing the following points:(5/6 , -5) (-1/3, -1/3) can someone please help me I keep getting
1. 1 answer
2. asked by Kathy
3. 591 views

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