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August 21, 2014

Posts by Linda


Total # Posts: 1,235

Math
x^3+2x^2-x=2 Find the real number of solutions of the equation
December 7, 2011

statistics
10. You have proposed a hypothesis that right-handed (RH) subjects will be superior in spatial analysis compared to left-handed (LH) subjects. Spatial analysis skills are being assessed on a scale which yields scores on a linear numerical scale. Given the following information...
December 6, 2011

Statistics
. You are running an a single variable ANOVA with five levels of the variable, such as comparing IQ on 5th, 6th, 7th, 8th and 9th graders and the F-value is very large. The significance for the F value is equal to .0003. What can you conclude about the overall effect and what...
December 6, 2011

Statstics
. You have proposed that males will outscore females on a standardized test of math skills. You now are looking at your results from an SPSS t-test which is analyzing for significance at the á = .05 level with a two-tailed test. You see the following output: t = 4.10 ...
December 6, 2011

Algebra word problem
A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
December 6, 2011

Algebra word problem
Megalodon Lives Angler went fishing and caught a monster of a fish! The head of the fish was 10 feet long. The length of the tail was equal to the length of the head plus half of the body. The body was as long as the head and the tail together. What was the total length of the...
December 6, 2011

Agebra Word Problem
What a steal of a Deal! Hunter went to TV City to buy a new TV. When he got there, he found that the manager was offering a 25% discount on every TV in the store. The one Hunter wanted was last year's model so he got an additional 10% discount on his purchase. When he got ...
December 6, 2011

Math - Trig please help!
State two intervals in which the function y=7sin(1/5x)+2 has an average rate of change that is: a) zero b)a negative value c)a positive value Please explain how to get the intervals! Thanks a lot in advance!
December 5, 2011

Math -Trig Please help!
At one time, Maple Leaf Village (which no longer exists) had North America’s largest Ferris wheel. The Ferris wheel had a diameter of 56 m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50 m above the ground. Sketch ...
December 1, 2011

geometry
(7x+3)in,(3x-1) +3 -3 6 4 7+6=12 4 12/12 = 4/6=2/3=1
December 1, 2011

stats
I'm a little confused on how to do it and then convert it into a percentage when I do work it out it comes to a huge number. I don't know to do anything after that . I get .31295738
November 29, 2011

math - please help!!
The number of immigrants living in a certan country with a large population makes up 20 percent of the population. in a random sample poll of 100 people what is the expected number of immigrants to be polled? (using bionomial distribution) thanks!
November 29, 2011

Math- Trig please help!
thank you!
November 29, 2011

Math- Trig please help!
A tire with a diameter of 100 cm rotates 20 times in 3 seconds. a) determine the angular velocity b) how far the tire has travelled? c) what is the speed in km/h?
November 29, 2011

algebra
When Mr. J. Raff took his two children to the zoo,their tickets cost $8.75. The next family in line was Mrs. Ella Fant with Grandpa and the five Fant kids. Their tickets cost a total of $19.75. How much does the zoo charge for each adult and for each child?
November 29, 2011

World Geography
Sorry, this wasn't clear at first. The question is what biomes of Negeria have high population density ?.
November 28, 2011

World Geography
What biomes have the highest population density?
November 28, 2011

American Government
Share two examples in American history of how the people of America shifted their ideologies from one set of beliefs to another. Why did this happen? What were the political, economic and social conditions that led to this shift?
November 28, 2011

Physics/Science
At what point in the swing of a pendulum is the maximum amount of the ball's motion transferred to the object it hits? (I think it's at its lowest swing point but I'm not completely sure.) And what does this "kinetic energy" depend on?
November 27, 2011

statistics
If a company is thinking of giving one department a 1000 bonus. Based on their means and standard deviation scores which set of employess will do better based on this information? Who should get the bonus? Employee A mean 16.875 standard deviation 4.45413 Employee B mean 12....
November 22, 2011

Algebra 2
Dividing: Write the expression as a complex number in standard form 1) 2+5i/5+2i 2) 6-i√2/6+i√2 for the first one I solved it and I only got this far: 10+21i-10i^2/25-4i^2
November 20, 2011

math - please help!!
If rhys is late for his finite mathematics class, and the probability that he is on time is 3/4. however if he is on time, he is liable to be less concerned about punctuality for the next class and his probability being on time drops to 1/2. rhy is on time monday. find the ...
November 20, 2011

Math
Find the discriminant of the quadratic equation and give the number and type of solutions of the equation. s^2√5 + s + √5 = 0 I'm confused because of the radical...
November 18, 2011

English/Writing
This is for an essay: How do you say/phrase "he used to", "he does not", "he is confronted with", "he would rather", "they have evolved", and "have succeeded" in present tense?
November 16, 2011

Art Apperciation
Compare Raphael’s School of Athens to Veronese’s Christ in the House of Levi. Explain how each artist reflected the political and social environment of Rome and Venice during the Renaissance period
November 16, 2011

algebra
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x – 15y = -12 3x + 24y = -12
November 14, 2011

Algebra
Divide -4x^3 + 24x^2 – 24x + 4 by x^2 – 5x + 1
November 14, 2011

Chemistry
The value of delta H for the reaction of 2Na2O2(s) + 2H20(l)----> 4NaOH(s)+O2(g) is -126KJ When 2.0 moles of NaOH is formed?
November 13, 2011

math
What is 3(x +4) - 2(3x - 3) simplified a) -3x + 18 b) -3x + 12 c) -9x + 18 d) -9x + 12
November 13, 2011

math
how do you simplify 3(x + 4) - 2(3x - 3)
November 13, 2011

Math
Solve the equation by factoring, by finding square roots, or by completing the square. 4(x+8)^2=144 I'm not sure if I'm suppose to divide or multiply the 4 to both sides..
November 10, 2011

Algebra Please help
So how many many flavor combinations
November 9, 2011

Algebra Please help
A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
November 9, 2011

Algebra word problem
A pack of Jellybeans contains 7 different flavors: Apricot, Banana, Coconut, Date, Eggplant, Fig, and Grape. You can Eat each flavor individually or come up with some crazy combinations. How many flavor combinations are possible with these 7 flavors alone or mixed? You can use...
November 8, 2011

Algebra word problem
Baking Cookies-Word Problem Our class planned a party for disadvantaged kids. Some of us baked cookies for the party. On the day of the party, we found we could divide the cookies into packets of two,three, four, five or six and have one cookie left over in each case. If we ...
November 8, 2011

algebra
Baking Cookies-Word Problem Our class planned a party for disadvantaged kids. Some of us baked cookies for the party. On the day of the party, we found we could divide the cookies into packets of two,three, four, five or six and have one cookie left over in each case. If we ...
November 8, 2011

Accounting
Present value analysis-cost of capital National Leasing is evaluating the cost of capital to use in its capital budgeting process. Over the recent past, the company has averaged a return on equity of 12% and a return on investment of 9%. The company can currently borrow short-...
November 3, 2011

Math
Lee Holmes deposited $15,000 in a new savings account at 9% interest compounded semiannually. At the beginning of year 4, Lee deposits an additional $40,000 at 9% intrest compounded semiannually. At the end of 6 years, what is the balance in Lee's account?
November 3, 2011

Math
Solve the equation 40^2 + 4a = 0 What I did was 4a (10a + 1) = 0 then I'm not sure what to do next...
November 3, 2011

Math
Factor the trinomial. If the trinomial cannot be found, say so. 11m^2 + 14m - 16 I just want to make sure...would the answer be (11m-8)(m+2) ?
November 3, 2011

algebra
My science class is pretty small. There are just 18 students in the class. My teacher, Mr. Burnett, has an unusual system for picking lab partners. He has given each student a number from 1 to 18, and on lab days, he pulls two numbers out of a bag to match people up. During ...
November 1, 2011

algebra
Mr. Hundley has a big collection of silver dollars and 50-cent pieces. He promised to give one fourth of his collection to the first teacher who can figure out the total values of his coins. These are the only clues: There are 132 more silver dollars than 50-cent pieces. The ...
November 1, 2011

Math
Solve the system using any algebraic method. 2x - 2y + z = 3 5y - z = -31 x + 3y + 2z = -21 ______________________ The answer I got for this is ( -26, 6,67) but I know its wrong and I don't know why. Help please >< my work is at the bottom I used substitution method ...
November 1, 2011

chemistry
You need to make an aqueous solution of 0.121 M magnesium chloride for an experiment in lab, using a 250 mL volumetric flask. How much solid magnesium chloride should you add ?
October 29, 2011

Math
Sally wants to buy her friend a bouquet for his birthday. She wants it to contain both carnations and roses. She has $25.20 to spend. Carnatinos cost $1.45 each and roses cost $2.35 each. Use a graph to show the possible combinations of numbers of carnations and roses Sally ...
October 27, 2011

Math
Tile Pattern... A design starts with 1 tile and it continues to grow the next day to 4 tiles and on the third day there is 13 tiles. How many tiles will there be on the 10th day? How many tiles on the 50th day? Find a formula for any number?
October 26, 2011

Math ( Word Problem )
Joel sells ice cream cones at the county fair. he has to rent the equipment for $49 and spend $.043 on ingredients for each one. How many ice cream cones must he sells at $1.10 each in order to make a profit? Write an inequality that represents how many ice cream cones must be...
October 25, 2011

calculus
How do I find the inflection points? f(x)= 2+3x-(x^3) Thank you!!
October 25, 2011

calculus
Find the local max/min values of f using botht the first and second derivatie test. I can do the first but I am having trouble with the second derivative. f(x)= x/(x^2+4) Help please...Thank you.
October 25, 2011

physics
I don't understand how to solve :(
October 25, 2011

physics
A hollow rubber ball with a diameter of 5.57 cm and a mass of 38.9 g is cut in half to make a boat (in a bathtub) for American pennies made after 1982. The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the boat ...
October 25, 2011

Math
Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps, Billy encountered...
October 24, 2011

Trick or Treat
Little Billy was out trick or treating on Halloween. He had gotten a lot of candy and was peering into his bag, when out from behind a tree came Freddy Krueger. Freddy reached into Billy's bag and took half of his candy plus one piece. Within a few steps, Billy encountered...
October 24, 2011

PC Basics
Jill wants to organize information into tables, figures, fields, and records. What type of software should Jill use? A. Communications C. Database B. Presentation D. Word processing I think the answer is C
October 18, 2011

Keyboarding and Word Processing
When typing personal titles in correspondence, you should always include the person’s name if you know it. If you don’t know the person’s name, which of the following should you use? A. Sir or Ma’am B. To whom it may concern C. Ladies and Gentlemen D. Mr. ...
October 18, 2011

Physics
An airplane flying horizontally at a constant speed of 350 km/h over level ground releases a bundle of food supplies. Ignore the effect of the air on the bundle. a)What is the bundle’s initial vertical component of velocity? =0 b)What is the bundle’s initial ...
October 16, 2011

Physics
A 45 kg boy running at 3 meters per second jumps on to a 97 kg sled that is initially at rest. Find the resulting speed of the sled with the boy aboard.
October 16, 2011

Drama
The ability of writers to completely identify with their characters is A. hypocrisy. B. ambiguity. C. negative capability. D. satire.
October 15, 2011

nonfiction
Thoreau writes that people should be "mining themselves for gold." By this he is stating, in another way, the ideal of Socrates, which was to A. know thyself. B. deny thyself to learn what is valuable. C. live and let live. D. put first things first
October 15, 2011

Poetry
Beyond tone, a poet's attitude toward his or her subject reveals to us a poem's A. subject. B. structure. C. diction. D. theme.
October 15, 2011

math
What is the mass of a liter of gasoline if its density is 0.66 g/mL?
October 14, 2011

Literature POETRY, PART 1
Which one of the following lines best illustrates personification? A. A narrow wind complains all day. B. The fog comes on little cat feet. C. She floated graceful as a dove. D. Spring is a dream unsung.
October 13, 2011

Literature the novel
The death of Curly is an example of A. the will to power. B. the theory of evolution. C. the law of club and fang. D. racial unconsciousness.
October 12, 2011

Read My Mind Word Problem
I am thinking of a three-digit number. It is an odd multiple of three, and the product of its digits is 24. It is larger than 15 squared. What are all the numbers that I could be thinking of?
October 11, 2011

Growing Puppies Word Problem/ Need Help Solving
Chritian's Chihuaha, Princess, weighs 2 pounds. Molly's Pit Bull, Psycho, weighs 14 pounds. They each seem to be gaining about a pound a month. The Pit Bull will soon weigh three times more than the Chihuahua. How many pounds will Princess weigh then?
October 11, 2011

POW#4 Read MY Mind
I am thinking of a three-digit number. It is an odd multiple of three, and the product of its digits is 24. It is larger than 15 squared. What are all the numbers that I could be thinking of?
October 10, 2011

Algebra POW HELP!!!!!
The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
October 6, 2011

Calculus
Here is the other. Thank you! A kite 100 ft above the ground moves horizontally at a speed of 8 ft/s. At what rate is the angle between the string and the horizontal decreasing when 200 ft of string has been let out?
October 5, 2011

Calculus
If any body can solve this I would be greatly appreciative. I spent an hour in the tutoring center and no one could solve. Here goes: A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks from the spotlight toward the building at a speed of 1.6 m/s, how...
October 5, 2011

Word Problem Help Please
The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
October 5, 2011

Algebra Splitting the Cost
The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
October 5, 2011

Algebra word problem/Splitting the Cost
So what is the first step in figuring it out????
October 5, 2011

Algebra word problem/Splitting the Cost
There has to be an initial step because first there was 20 students
October 5, 2011

Algebra word problem/Splitting the Cost
The cost of renting a bus to go snowboarding was split evenly by the 20 students planning to go. The day before the trip, 10 more students decided to go. Dividing the cost evenly among all 30 students brought the average cost down by $9.00 per person. What was the total cost ...
October 5, 2011

Algebra word problem
There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50 questions. What is the fewest number of questions a ...
October 5, 2011

Calculus
Find dy/dx by implicit differentiation: x^2-2xy+y^3 = c Thank you!
October 4, 2011

chemistry
The total number of atoms in 0.111 mol of FeCO3(PH3)2...?
October 3, 2011

Math 103
Write the set of points from -5 to 1 but excluding -4 and 1 as a union of intervals
September 29, 2011

Calculus
I think I have the correct answers for the following problems. For anyone who has the time I would appreciate it if you could tell me if I am correct/incorrect. Thank you. 1). Differentiate ã(x)sin x = (2xcosx+sinx)/2ã(x) 2). Differentiate 2t/(4+t^2...
September 25, 2011

math
f(-0.7)=-0.7^5-4(-0.7^4)-7(-0.7^2)-6(-0.7) = -.35847 f(-0.6)= substitue -0.6 in the equation = .48384 Assuming that f(x)= x^5 - 4x^4- 7x^2 - 6x = 0 Then solution would be -.35847 < 0 < .48384
September 25, 2011

Algebra
Rewrite one of the equations and plug into another equation and solve for each variable: (x + 2y = 12) = (x = 12-2y) plug x in (x+6y+z=20) = (12-2y+6y+z =20) is equal to (4y+z=8) rewrite (4y+z=8) and you get (z=8-4y). plug z in (3y-4z=25) solve and you get y=3. now you have ...
September 25, 2011

art history
Even though the art in the Renaissance and Baroque periods was not totally religiously oriented as had been the case before 1400, there was still much artistic effort put forth toward the creation of beautiful religious pieces. Explain why this influence continued through ...
September 24, 2011

Physics...Help please
The problem is from fundamentals of physics 9th edition by halliday. Here is a free download of the book since I couldn't post the graph (I had to write out link since site doesn't allow links to be posted): tripplew period sendspace period com/file/shrz0x I am having ...
September 23, 2011

Mat126: Survery of Mathematics
Create a math formula showing that if 71% of adult use sunscreen and 71% is a large number how many use or do not use sunscreen?
September 19, 2011

math
if u received 2 dozen items and sold three of those items the first day, how many of those items are left?
September 19, 2011

Physics - HELP! PLEASE
The problem is from fundamentals of physics 9th edition by halliday. Here is a free download of the book since I couldn't post the graph (I had to write out link since site doesn't allow links to be posted): tripplew period sendspace period com/file/shrz0x I am having ...
September 18, 2011

Physics
Per the figure ( I was unable to post), the graph is a linear line, it doesn't mention that acceleration is constant.
September 18, 2011

Physics
Figure 2-41 gives the acceleration a versus time t for a particle moving along an x axis. The a-axis scale is set by as = 13.0 m/s2. At t = -2.0 s, the particle's velocity is 10.0 m/s. What is its velocity at t = 6.0 s?
September 18, 2011

math
earth diameter is 13000 kilometers, globe diameter of0.5 meter, what is the globes scale as a ratio. What distance on Earth would 1 cm on the globe represent?
September 14, 2011

Algebra
Solve for y x-2xy=1
September 13, 2011

Algebra
F=9/5C+32 Solve for C if someone could explain in a step by step way that would be great!
September 11, 2011

Psychology
Why is problem solving considered the highest level of mental activity? What makes an individual good at problem solving?
September 10, 2011

arithmetic
thank you
September 8, 2011

arithmetic
What is the circumference of a circle with a radius of 9inches? (-2nr)
September 8, 2011

Math
yes that feels like the correct one. math and music go together.
September 7, 2011

Algebra
Questions on piecewise function graphing Obviously I can't get help with the actual graphing here but I am hoping someone can push me in the right direction Problem: f(x) {4, if 0<=x<2} {5, if 2<=x<4} {6, if 4<=x<6} So how would I get started? What does ...
September 6, 2011

Algebra
How do I graph how to raph -y>=4/3 (greater than or equal to) I don't understand what to do when the y is negative Any help would be greatly appreciated :)
September 5, 2011

Psychology
Why would you consider encoding messages into linguistic form as the most important step?
September 5, 2011

Psychology
What are the stages of language production? Which one of these stages is the most crucial? Why? This is what I have thus far: Language production refers to the process involved in creating and expressing meaning through language. The four stages in language production are ...
September 5, 2011

English
What do you think of the revised paragraph? I really changed the whole paragraph, is it better?
September 1, 2011

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