Tuesday

September 27, 2016
Total # Posts: 1,181

**Statistics**

Height (ft) Interval after (min) 96 68 111 80 76 66 91 72 66 58 108 79 116 84 91 79 The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent (x) variable. Find the...

*February 12, 2014*

**Statistics**

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 624 babies were born, and 312 of them were girls. Use the sample data to construct a 99% confidence interval estimate of the percentage of girls born. Based on the result, ...

*February 12, 2014*

**Statistics**

Critical Values for the Correlation Coefficient n alpha = .05 alpha = .01 4 0.95 0.99 5 0.878 0.959 6 0.811 0.917 7 0.754 0.875 8 0.707 0.834 9 0.666 0.798 10 0.632 0.765 11 0.602 0.735 12 0.576 0.708 13 0.553 0.684 14 0.532 0.661 15 0.514 0.641 16 0.497 0.623 17 0.482 0.606 ...

*February 12, 2014*

**Statistics**

Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the data to construct a 90% ...

*February 12, 2014*

**Statistics**

An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95% confidence that the sample mean is within ...

*February 12, 2014*

**Research and Statistics**

What does truncated range?

*February 10, 2014*

**art**

how do we learn to draw?

*February 8, 2014*

**Math**

the answer in me is A

*February 5, 2014*

**Chemistry**

What volume of oxygen at 25 degrees celsius and 93.5 kPa will use up 57.1 g of butane?

*February 1, 2014*

**statistics**

A psychologist studied self esteem scores and found the sample data set to be normally distributed with a mean of 50 and a standard deviation of 5?

*January 25, 2014*

**Social Studies**

1.How did their dependence on British trade affect the opinions of Americans in the East and North regarding the War of 1812? -more inclined to fund the War of 1812 -less supportive of the War of 1812 -secretively supportive of the War of 1812 -less interested in resolving ...

*January 5, 2014*

**science**

thank u

*January 5, 2014*

**science**

it still confusing

*January 5, 2014*

**science**

Suppose the moon rotated on it axis just as quickly as Earth. Would you still always see the same side of the moon from Earth? *PLEASE HELP ME WITH THIS QUESTION*

*January 5, 2014*

**Math**

A square has rotational symmetry because it can be rotated 180 degrees so that its image matches the original. Your friend says the angle of rotation is 180 divided by 4 = 45 degrees. What is wrong with this statement?

*December 13, 2013*

**5th Grade Math**

Thank you Ms. Sue!

*November 26, 2013*

**5th Grade Math**

Can you please show me the steps on how to write each decimal as a mixed number in simplest form? 1. 8.9 2. 42.96

*November 26, 2013*

**5th Grade Math**

Danielle and her brother went to the town carnival. Together, they won 15 prizes. Danielle won 9 of them. What fraction did her brother win? If there had been only 10 prizes won, how many would her brother have won if the fractions were equivalent? Can you please show me how ...

*November 25, 2013*

**5th Grade Math**

Danielle and her brother went to the town carnival. Together, they won 15 prizes. Danielle won 9 of them. What fraction did her brother win? If there had been only 10 prizes won, how many would her brother have won if the fractions were equivalent?

*November 25, 2013*

**Anatomy**

Which of the following cells lacks mitochondria? a. neutrophil b. platelets c. basophils d. erythrocytes I just need some assistance and assurance that my answer is reasonable. I'm thinking that the answer is d. erythrocyte because it is not a true cell. I know that the ...

*October 29, 2013*

**math**

ANGLE A AND B ARE SUPPLEMENTARY. THE MEASURE OF ANGLE A IS 5X+12 AND THE MEASURE OF ANGLE B IS 6X-30. FIND THE MEASURMENT OF EACH.

*October 16, 2013*

**Physics**

A child pulls a wagon along level ground. The handle with which she pulls the wagon makes an angle of 20.0 degrees with the ground as the child pulls with a force of 78.0 Newton. What are the components of the force. Pls pls pls pls help me answer this and may God bless u!

*October 16, 2013*

**Physics **

A person pulls a rake with 152 Newton of force along the handle. The angle between the handle and the ground is 35.0 degrees. Determine the magnitudes of the horizontal and vertical components of this force.

*October 16, 2013*

**Physics**

Find the magnitude and direction of the equilibrant force for these two concurrent forces: 13.5 N, E and 32.0 N, N. Pls HELP me answer this. Thank u very much.

*October 16, 2013*

**Science**

How far does any object on Earth fall after being in free fall for 7.5 seconds? Remember g=9.81 m/s2

*October 1, 2013*

**chemistry**

What equation will you use to calculate the heat of fusion of ice? The specific heat of water is 4.184 J/(gx°C), and the heat capacity of your calorimeter is 1.0x10^1 J/°C.

*October 1, 2013*

**englsih**

hello i would like help to find information on a play called uncle vanya and information about the author chekhov

*September 28, 2013*

**Math**

Natalie has some nickels, Dirk has some dimes, and Qunicy has some quarters. Dirk has five more dimes than Qunicy has quarters. If Natalie gives Dirk a nickel, Dirk gives Quincy a dimes, and Quincy gives Natalie a quarter, they will all have the same amount of money. How many ...

*September 27, 2013*

**Math**

I got: Nickels - 12 Quarters - 16 Dimes - 9 I was not sure how to set up the problem. I'm good with two variables but not three. thx

*September 27, 2013*

**Math**

1. Joe has 37 coins (all nickels, dimes and quarters) worth $5.50. She has 4 more quarters than nickels. How many dimes does Joe have?

*September 27, 2013*

**Math**

5. Raul works 2 hours a day after school, Monday through Friday. On Saturdays he works 8 hours at $2 more per hour than on weekdays. If he makes $142 per week, how much does he make per hour on weekdays.

*September 25, 2013*

**Math**

4. The Alan Company bought 80 tickets for a jazz company. After giving away 20 tickets to customers, the company sold the rest to the employees for half of the purchase price. If the company absorbed a $1,000 loss on all tickets , how much did an employee pay for a ticket.

*September 25, 2013*

**Math **

2. Celia brought 12 apples , ate two of them, and sold the rest for 20 cents more per apple than was she paid. Her total profit was $1.00 How much did she sell each apple for.

*September 25, 2013*

**Math **

1. A collection of 52 dimes and nickels is worth $4.50. How many nickels are there?

*September 25, 2013*

**Math**

In a basketball game Maria scored 3 times as many points as Holly. In the next game, Maria scored 7 fewer points than she did in the first game, while Holly scored 9 more points than she did in the first game. If they scored the same number of points in the second game, how ...

*September 24, 2013*

**Algebra**

Leo's garden, which is 6m wide, has the same area as Jen's garden, whichis 8m wide. Find the length of the two rectangular gardens if Leo's garden is 3m longer than Jen's garden.

*September 24, 2013*

**Algebra**

Mona earns 3 times as much as an actuary as she does as a writer. Her total income is $40,000 more than her brother. He earns half as much as Mona does as an actuary. What is Mona's salary as an actuary?

*September 24, 2013*

**Math**

The length of a rectangle is twice the width. The perimeter is 84 cm more than its width. Find the dimensions.

*September 23, 2013*

**Algebra 1**

2 + y / 3 = - 1

*September 18, 2013*

**University of Phoenix**

Templeton Extended Care Facilities, Inc. is considering the acquisition of a chain of cemeteries for $370 million. Since the primary asset of this business is real estate, Templeton's management has determined that they will be able to borrow the majority of the money ...

*September 16, 2013*

**Social Studies**

How would land elevation have changed if coronado had traveled 150 miles due west from what today is Arizona instead of east torward new Mexico.

*September 10, 2013*

**Geometry**

How do you segment postulates to determine congruent segments

*September 6, 2013*

**math**

Shella used 1 2/3 cups of sugar to make 5 dozen brownies. how much sugar is in each brownie?

*September 5, 2013*

**Chemistry**

How many grams of a stock solution that is 87.0 percent H2SO4 by mass would be needed to make 200 grams of a 35.5 percent by mass solution? Show all of the work needed to solve this problem.

*September 2, 2013*

**Geometry**

An antique dealer visited three shops. She spent $25 at the first shop. At the second shop, she spent half of her remaining money and had $60 left. How much money did the dealer have originally.

*September 1, 2013*

**MATH I NEED HELP PLEASE**

find the function h(x)=1/98 x^2

*September 1, 2013*

**Geometry**

Thank you so much

*August 29, 2013*

**Geometry**

How do you do the problem 4k+7(-4-2k)=-2(k-2) Please help me I keep trying and can't get the right answer thanks-steph

*August 29, 2013*

**Math**

I am a morethan of 30 but less than 35 I am multiple of 2 the sum of my digit is 7? Who am i

*June 22, 2013*

**algebra**

-3(4r-8)=-36

*May 23, 2013*

**math**

22. Sunshine Honda sold 112 cars this month. If that is 40% greater than last month, how many cars were sold last month? (Points : 2)

*May 18, 2013*

**la porte high school**

An object travels horizontally at 15.00 meters per second off a cliff that is 12.00 meters tall. How far from the base of the cliff does the object land?

*May 10, 2013*

**Math**

I can not figure out the worksheet How Can You Help Control Soil Erosion?

*May 9, 2013*

**Math**

What is $4.80 rounded to the nearest cent?

*May 2, 2013*

**Language Arts**

In poetry,a word or line can have more than one meaning. "I fumble with the task to no avail." What different ways can you interpret this?

*April 30, 2013*

**Microbiology**

How can I isolate & identify a bacterial infection acquired on another planet that is unknown to me?

*April 30, 2013*

**chemistry **

the pressure in a 1.0 container is 988 ATM what is the pressure in a 2.56L container? ( use gas laws )

*April 24, 2013*

**management for organization**

Which of the following theories belongs to the modern era of management? (Points : 1)

*April 21, 2013*

**Math**

A circular pizza with a 12 inch diameter has 20 pieces of pepperoni. How many pieces will a pizza with an 18 inch diameter have?

*April 16, 2013*

**Physics**

What is the frequency of a light wave that has a wavelength of 0.0025m?

*April 2, 2013*

**Physics**

Jill screams and hears her echo 4.4 seconds later. How far from the canyon wall is she if the air temperature is 25 degree C?

*April 2, 2013*

**Physics**

Joe stands 150 m from the edge of a canyon wall. How long will it take him to hear his echo if the air temperature is 250 degree C?

*April 2, 2013*

**programming**

Design a class named Book that holds a stock number, author, title, price, and number of pages for a book. Include methods to set and get the values for each data ﬁeld. Also include a displayInfo() method that displays each of the Book’s data ﬁelds with ...

*March 30, 2013*

**programming**

pseudocode for // This application reads 10 numbers // and sorts them, and displays the three highest numbers

*March 29, 2013*

**programming**

// This application reads student typing test data // including number of errors on the test, and the number // of words typed per minute. Grades are assigned based // on the following table

*March 29, 2013*

**programming**

Create the logic for a program that prompts a user for three numbers and stores them in an array. Pass the array to a method that reverses the order of the numbers. Display the reversed numbers in the main program.

*March 28, 2013*

**programming**

The village of Ringwood conducted a census and created records that contain household data, including income. Ringwood has exactly 75 households. Write a program into which a village statistician can enter each of the 75 household income values, and determine the mean and ...

*March 28, 2013*

**Algebra**

At a portrait studio, three 8- by 10-inch pictures plus two 5- by -inch pictures cost $52, and two 8- by 10-inch pictures plus 5- by 7-inch pictures cost $40. This situation can represented by the system of equations below, where x is the cost, in dollars, of each 8- by 10-...

*March 24, 2013*

**Tides**

What astronomical bodies are most responsible for the tides on earth?

*March 24, 2013*

**Earth and Space Science**

which is closer to earth a moon or galaxy?

*March 23, 2013*

**Earth and Space Science**

Put the following astronomical bodies in order from largest to smallest: a. Universe b. Galaxy c. Moon d. Planet e. Solar System f. Comet

*March 23, 2013*

**Energy Transfer and Heat flow**

ignore this please I refreshed by accident

*March 22, 2013*

**Energy Transfer and Heat flow**

1. What is entropy? 2.With every energy transfer, what form of energy is always released? I think 2 is Heat?

*March 22, 2013*

**chemistry**

how do I calculate the mass of ammonium sulfate formed from the complete reaction of 700 grams of ammonia?

*March 17, 2013*

**Science**

How does the position of Earth's axis at the March and September equinoxes compare to its position at the summer solstice?

*March 17, 2013*

**Chemistry**

how many grams of ammonium sulfate is formed from the complete reaction of 700 grams of ammonie

*March 17, 2013*

**math**

A square pyramid has a slant height of 13 meters and a height of 12 meters. What is the surface area if the square base has sides of length 10 meters? 360 m2 320 m2 260 m2 120 m2

*March 16, 2013*

**Physics**

I'm really trying to pass this stupid class.....so quit playing around guys

*March 15, 2013*

**Physics**

So no answer?

*March 15, 2013*

**Science**

Is it true that the atomic bomb couldn't exist without radioactivity?

*March 12, 2013*

**chemistry**

1.7g

*March 12, 2013*

**chemistry**

1L of a buffer composed of acetic acid and sodium acetate has a pH of 4.3. Adding 10mL of 2M sodium hydroxide solution to 100mL of this buffer causes the pH to rise to 4.87. what is the total molarity of the original buffer?

*March 10, 2013*

**chemistry**

i am suppose to calculate the pH at the new conditions, but i am super lost. also for c and d i think you would have to figure out the moles, but then i do not know what to do from there.

*March 10, 2013*

**Physics II**

The 12*10^-8 is in ohm-m, and the wire resistance is in ohms. I copy pasted the question from "WebAssign" so I guess the symbol for ohms did not transfer over.

*March 7, 2013*

**Physics II**

A 51.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 12 10-8 · m, and the density is 7.67 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.5 . What length ...

*March 7, 2013*

**Algebra**

What is the solution for this inequality? 8+6x≥7x+2-x

*March 5, 2013*

**Stat**

Suppose there are 2 black, 3 white, and 5 red marbles in an urn. You reach in and randomly select 3 marbles without replacement. And let X be the number of black marbles. Find the probability table for X.

*March 4, 2013*

**English **

1-how Do you think Mrs clemm reacted to Poe's message. 2-what new insight into Edgar Allan Poe did you get from this letter

*March 3, 2013*

**ignore this please**

ignore this one

*February 26, 2013*

**Algebra ASAP**

Elimination ( show work please) 6x+5y=39 3x+5y=27

*February 26, 2013*

**Algebra**

If a temperature dropped from 44degrees to -56 degrees in a 24 hour period, how many degrees did the temperature drop during that time?

*February 26, 2013*

**Math**

graph the data in each table Perimeters of Similar Rectangles x 1 2 3 4 5 P ? ? ? ? ? Graph P 40 30 20 20 0 1 2 3 4 5 6 7 8 9 X Area of Similar Rectangles X 1 2 3 4 5 A ? ? ? ? ? A 40 30 20 10 0 1 2 3 4 5 6 7 8 9 X 1st rectangle is one side x bottom 2x then they pretty much ...

*February 25, 2013*

**chem**

how many moole of helium gas is needed to pressurize an evacuated 25.0L tank to a pressure of 120 atm at 25.0 C ?

*February 23, 2013*

**science**

How does the temperature change in the sun's atmosphere differ from the temperature change in the sun's interior?

*February 23, 2013*

**Algebra**

Yes that is thank you so much (:

*February 22, 2013*

**Algebra**

I am confused on how solve this substitution problem 4y+3=3y+x 2x+4y=18 If you can, show work please (:

*February 22, 2013*

**Chemistry**

0.135molHe

*February 22, 2013*

**Chemistry **

The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centimeter of Cr? As a solid, Cr adopts a body-centered cubic unit cell. How many unit cells are present per cubic centimeter of Cr?

*February 19, 2013*

**AP English 11 **

I have to write a paper for english, i keep getting bad grades and i use the paper rater sight always to make sure i do my best. it shows i get a 95 and my teacher gives me 30-20 points less and i dont under stand what im doing wrong. i need help on my next paper which is ...

*February 18, 2013*