Wednesday
July 23, 2014

Posts by Karen


Total # Posts: 779

Statistics
Studies find a negative correlation between hours spent watching television and scores on reading tests. Does watching television make people less able to read? Probably, but this doesn't follow from the data. The studies are observational, and it might be that the causali...

History
What cartographer held or had a stake in the Mount Vernon Furnace from 1878-1882?

Chemistry
Oxidation Numbers AlH(SO4)3 and the overall charge is -2 BaCr2O7

Algebra 2
Choose the equation that best represents an ellipse for the given foci and co-vertices. 1. foci (+-2, 0) co-vertices (0, +-4) 2. foci (+-3, 0) co-vertices (0,+-6) 3. foci (0, +-3) co-vertices (+-5, 0) Choose the equation for the hyperbola centered at the origin with the given ...

Please proofread
It's spelled Abraham Lincoln also.

Physcis
I would think D. Momentum depends on their weight, doesn't it?

math
$12,480

statistics
3. The following data shows expenditures (in millions of dollars) and case (sales in millions) for seven major soft drink brands. Show a scatter diagram of the data and describe in words what it tells you. Calculate the correlation coefficient and see if it backs up the scatt...

descriptive Statistics
Listed below are the number of homeruns for the National League leader over the last 20 years, through 2006. Assuming that number of homeruns is normally distributed, if this is sample data collected from a population of all past and future homerun leaders, test the claim that...

Descriptive Statistics
. Over the last 15 Major League Baseball seasons, the mean number of strikeouts by the American League leader is 258.5. Assuming that the number of strikeouts by the league leader is normally distributed and the standard deviation for all seasons in all leagues is 34.9, find t...

Math
A shoe box is an example of what geometric solid?

Science
Thanks for all your help

Science
Why would a more active cell need more mitochondria?

Science please help
Thanks for all your help

Science please help
What form is the energy turned into by a mitochondria? I need help with this question. thanks god bless

math
how many grams of NaC1 are in 100mL of NS solution?

math
Find the amount accumulated in the sinking fund if $1600 is deposited quarterly for 20 years at 6% per year. (Assume end-of-period deposits and compounding at the same intervals as deposits. Round your answer to the nearest dollar.)

math
Find the amount accumulated in the sinking fund if $200 is deposited monthly for 14 years at 3% per year. (Assume end-of-period deposits and compounding at the same intervals as deposits. Round your answer to the nearest dollar.)

Math
You invest $10,000 in Rapid Growth Funds, which appreciate by 1% per year, with yields reinvested quarterly. By how much will your investment have grown after 6 years?

Math
You deposit $1000 in an account at the Lifelong Trust Savings and Loan that pays 7% interest compounded quarterly. By how much will your deposit have grown after 4 years?

binomial random variables
sorry cant help but you could try google

math ws
yes, but I am having difficulties

Science-please help
The gravitational force of the Earth acting on an object with more mass is stronger than the force on a smaller mass object of the same size, yet they both fall at the same rate of increasing speed (i.e. balls of different masses but with similar sizes fall to the ground at th...

Chemistry
In paper chromatography, why must the starting line be drawn with pencil? Thanks!

math 6th grade
I need to write the percent as a fraction in the simplest form. Please show me step by how to get 15% in the simplest form. Thanks !

English Grade 11
how to set up a outline on a short story

history
what makes the value of our money?

government
Compare and contrast Rupublican and Democracy

analogies
Thank you Ms.Sue!

analogies
broom is to sweep as brush is to a 5 letter word that begins with scr,spr,str,thr? Can you help? I have no idea?

Pre-Calculus
No, the sum of the cubes is 3 so its m+n=1 m^3+n^3=3

Pre-Calculus
If the sum of two numbers is 1 and the sum of the cubes of the numbers is 3, what is the sum of the squares of the numbers?

7th grade science
what is evolutionary divergence?

English
Thanks!

English
Does this sentence make sense? My mother's bedsheets has embroidery.

government
Yoto write back adela

Calculus
I did that and got 2... my friend said the answer is just 2/7. Is she right?

Calculus
Find dy/dx for: 2y^3 - 3xy = 4 Write an equasion for the line tangent to the curve at (1,2) Find d^2y/dx^2 at (1,2)

biology - number of feet
snails and slugs come closest although the 'foot' is an integral part of their body, not an appendage

social studys
The royalty is not focusing on the needs of the subjects

biology
what are the important differences between living and non-living things?

math116
i need answers to math 116 week 9 final exam. please help.

social studies
IF THE PRES. AND VICE PRES. DIE, WHO TAKES OVER?? SEC. OF STATE OR SPEAKER OF THE HOUSE?

math (geometry)
What color name written in capital letters, has two letters with two pairs of parallel lines, four of the letters have perpendicular lines and three letters have both parallel and perpendicular lines?

Statistics
I am having difficulty deciding which basic statistical test I should use to compare two means. I am comparing calorie consumption amongst people with different levels of physical activity. Is an independent two sample t-test acceptable?

psy101
A. Absorbibg neural impulses

college algebra
Lisa can shovel snow from her driveway in 50 min. Jim an do the same job in 55 min.How long would it take Lisa and Jim if they worked together?

college algebra
awesome. thanks I was trying to do r=d/t and wasn't getting it right.

college algebra
Kathy bicycles 5km/h faster than Javier. In the same time it takes Javier to bicycle 49km, Kathy can bicycle 63 km. How fast does each bicyclist travel?

eco
Assume that American rice sells for $100 per bushel, Japanese rice sells for 16,000 yen per bushel, and the nominal exchange rate is 80 yen per dollar. Suppose that rice is the only commodity in the world. What would happen to the real exchange rate between the United States a...

8th grade physical sience
I need help with the first part.

Primary Source
I am trying to find a primary source on Ferdinand Magellan. I understand that there are primary source book about him, but I need a primary source on the internet. I cannot seem to find one! Please help.

calculus
differentiate y = (cos x)/ (x^9)

algebra
simplifying using distributive property 2x+3y+2(x-y)-3x

Chemistry
The heads of matches are made with P4S3. this material is made by heating a mixture of red phosphorus and sulfur: 8P4 + 3S8----> 8P4S3 If a match company uses 5435 grams of phosphorous (p4) with an excess of sulfure, how many grams of P4S3 can be made?

English
What are things most people do not notice? Please and thank you!

physics
thanks!

physics
Thanks!! Could you explain this one to me? object is projected with a horizontal velocity of 30 m/s. if it hits the ground 5 seconds later, calculate: The height from which the particle was projected.

physics
A ball is thrown with a horizontal velocity of 2 m/s from a vertical height of 50 m above ground. neglect air resistance and determine: the horizontal displacement traveled by the ball. can someone please explain this to me!

math
how do you do this equation by using elimination.? 8x-5y=11 4x-3y=5

Treasury securities and Inflation (URGENT)
How does inflation figure in when it comes to treasury securities?

physics
a guy throws a ball up and catches it 3.5 seconds later. what is the max height and initial velocity. Please help!

Microeconomics (margin Utility) need clarification
Thanks for the clarification, means alot.

Physics
thanks! Is approximately 141 km/h correct?

Physics
calculate the magnitude of the resultant of a pair of 100-km/h velocity vectors that are at right angles to each other. Please help me! thanks!

Math
Thanks for your help!

Math
Ohh, okay. I think the answer is 8!

Math
How did you get 5 mintues and 40 mintues?

Math
As a busboy in a restaurant, Amiel takes 1/12 h to clear and reset a table. How many tables can Amiel clear in 2/3 h?

eco
What is the immediate effect of each of the following events on U.S. GDP and its components? 1. someone, at the age of 94, retires reluctantly and receives a social security check. 2. someone, after steadfastly labored and saved for many years, fulfills his American dream and ...

history
explain 9th amendment

eco
For real? So what about someone, at the age of 94, retires reluctantly and receives a Social Security check?

eco
Identify the immediate effect of this following event on U.S. GDP and its components: Someone buys domestically produced dog food for her posh 3-star restaurant, Epicurean Retreat.

eco
What is the immediate effect of some buys domestically produced dog food for his posh 3-star restaurant, Epicurean Retreat, on U.S. GDP and its components???? Please give me some ideas to do it!!!!!!!!!! THANKS SO MUCH!!!!!!!!

Math
nvm then since no one will help me :'(

Math
hello???? can anyone help me with my question plz??

Math
the answer in the back says a) no, it only tells the proportion b)15 cm how would i show my work for b?

Math
sorry i but carly as my name it was actually me

Math
In rectangle MNPQ, the ratio of the length of MP is 4:5. a) Does this ratio tell you how long MN is? Explain. b) What if MN is 12cm long. How long is MP? Use a diagram to illustrate your answer. Show your work.

science
1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air resistance

science
friction-force that acts to oppose sliding between two surfaces that are touching

science
1.act against the direction of motion and gets larger as an object moves faster 2. an object acted upon by a net force will accelerate in the direction of that force. 3.the speed an object reaches when the force of gravity is balanced by the force of air resistance

language
how do larger than life characters show the values of their cultures

English
i am sorry that things are sad sometimes they get better and other times they just stay the same on minute they are sad and then the other minute than it is happy and sometimes they are happier and other times they are sad i hope i helped out some

algebra
how do i solve for n in this equation: s=180n-360

us history
What was the main reason the French explored the new world? Same question for the Spanish. Was it to build colonies, find gold or conquer the indians?

grammar
Thanks for answering Guru! I get the general idea of active and passive. I cooked dinner. (active) The dinner was cooked by me. (passive--I'm doing the cooking--not the dinner) But I'm still not sure of these sentences... A community center will be opened to everyone. ...

grammar
I am learning about active voice and passive voice. I was given some exercises to do, and I'm not sure if my answers are right or not. I'm confused because my worksheet says the verb to be is passive. Is it always passive? Can you help me understand if these verbs are ...

math
Complete each statement .(round to the nearest hundreth) 7L = _________ qt.

Human Growth and development
they are good articles- however my assignment wants me to use a bad correlational study and show where the research is lacking........

Human Growth and development
I am supposed to do a paper on an article using correlational research that is presented in an inappropriate manner. I am having a lot of trouble finding an article. I have spent 3 hours searching the internet today. Any ideas?

high school
Why is it dangerous to light one bunson burner using a second bunson burner?

mat/116
so there's no slope for these ordered pairs?

mat/116
I need to find the slope if it exists for (8,4) and (9,-2)...any help is appreciated

Math
That makes sense I need to leave out the 1st and the fifth number and use just the three numbers that are not calculated. Bob you are a life saver thank you.

Math
The average of five number is 56. Four of the numbers are the same. The average of one of the four number and the fifth number is 80. What is the fifth number. 56*5=280 80*2=160 280-160=120 5/120=24 Is 24 correct?

mat/116
describe what the interval [-4,10] looks like. What is meant by this?

MAT/116
find the intercept: x+y-13 x-y=-3

algebra
The whole question is,"suppose you were at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the tank with g gallons. Given the equation C(g)=3.03g, what does the 3.03 represent?"

algebra
in the equation C(g)= 3.03(g) what does the 3.03 represent?

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