Thursday

January 19, 2017
Total # Posts: 1,079

**Statistics**

A multiple choice test has five choices. Therefore the probability of getting the correct answer by guessing is 0.2. The test has six questions. Use the binomial formula with n = 6 and p = 0.2 to (a) Determine probability of getting two questions correct. (b)Determine ...

*March 3, 2013*

**Statistics**

The heights of young women are approximately normally distributed with a mean of 64.5 inches and a standard deviation of 2.5 inches. Determine the following: what percent of young women would be acceptable as members if being a member required a height of 70 inches or more? ...

*March 3, 2013*

**statistics**

In order to plan for parking and transportation needs at a college, administrators asked students how they got to school. Some came by bus, some came by car and the others used “personal “ transportation – bikes, skateboards, or walked. The following table ...

*March 3, 2013*

**Statistics**

DIAGRAMS MUST BE DRAWN Given the standard normal distribution, determine:Prob Z greater than 1.50 Prob Z between1.06 and 1.96 Given the standard normal distribution determine the Z values that contain 80% in the middle of the curve.

*March 2, 2013*

**Statistics**

This is a standard deviation contest. You have a six sided die with the numbers 1 to 6 written on the faces. a)In order to have the smallest possible standard deviation what number(s) would have to show up if you rolled the die five times? b)In order to have the largest ...

*March 2, 2013*

**statistics**

Boxes of bran flakes are known to be normally distributed with a mean weight of 475g and a standard deviation of 10g.Calculate the probability of a box having a weight exceeding 485 grams. Calculate the probability that the mean weight of sixteen boxes will exceed 480g.

*March 2, 2013*

**Statistics**

Consider a basketball game where a player throws from the free throw line. Her success rate is 65%. If she throws 10 times in a game determine the following:The mean and standard deviation of this binomial distribution.

*March 2, 2013*

**Chemistry**

What volume in milliters of calcium chloride stock solution would you use to make .50 L of 3.00 M of CaCl solution?

*March 1, 2013*

**math**

How did you get 1093.61 because in my book it says the answer is 2188 yards. I did 2*.621*1760=2185. yards.

*February 28, 2013*

**math**

what is 7% of 250,000

*February 28, 2013*

**Geography**

Thank you so much. Have a good day

*February 17, 2013*

**Geography**

Can someone tell me what this question means: Which of these rivers flows entirely within the Northern Hemisphere? Amazon - Parana - Uruguay - Orinoco - Negro. I don't get the question. Thanks

*February 17, 2013*

**Math**

Next door neighbors Moe and Larry are using hoses from each of their houses to fill Moe's pool. They know it takes 12 hours using both hoses. They also know that Moe's hose, used alone, takes 40% less time than using Larry's hose alone. How much time is required to...

*February 11, 2013*

**Math**

A photograph is 25 cm and 20 cm high. It must be reduced to fit a space that is 8 cm high. Find the width of the reduced photograph.

*February 4, 2013*

**Science**

Can you help me with meiosis? Why is meiosis important?

*February 4, 2013*

**Math**

Carl has three lengths of cable,5/6 yard long,1/4 yard long and 2/3 yard long.he needs at least one yard of cable. Which two pieces together Make a k Length at least 1 yard and closest to one yard

*January 31, 2013*

**Pattern blocks**

Make certain shapes using pattern blocks. How many blanks can fit in blanks ?

*January 24, 2013*

**algebra**

find the unknown side. The area of the rectangle is 126 square centimeters one side is 7 cm what is the value of x.

*January 16, 2013*

**Math high school**

Find the slope of altitude to line AT the coordinates are A(-7,0) and T (9,-7)

*January 13, 2013*

**9th grade algebra**

A(1,-2) and B(-4,-4)

*January 10, 2013*

**Math**

The cost of 2 televisions and 3 DVD players is $1,421. The cost of 1DVD player is half the cost of 1 television. What is the cost of 1 television?

*December 10, 2012*

**english**

addressed to my sister.

*December 4, 2012*

**economics**

While sitting in your office one evening, you begin to think about some of the key microeconomic messages you want to communicate to the Board. (Key concepts include, but are not limited to, supply and demand, pricing, competition, costs & production, and economic value added...

*December 2, 2012*

**algebra**

if 5 times the first number plus 3 times the second number equals 47 and 10 times the first number minus 4 times the second number equals 54, what are the numbers? please explain the steps

*November 26, 2012*

**algebra**

Adam is 3 times as old as Cynthia and Fred is 16 years younger than adam. One year ago, Adam's age was twice the sum of Cythia and Freds age. Find the present ages. I have a=3c f=a-16 a-1=2(c-1 + f-1) and I don't understand what comes next and why

*November 26, 2012*

**algebra**

I need the algebra sentence for the following problem..Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age.Find their present age.

*November 26, 2012*

**Math**

if a 65 inch of wire is divided into 7 equal pieces how much wire is left over?

*November 19, 2012*

**pre algebra**

Scrambled digits. 91.4 x 63.8 equals 748.84?

*November 16, 2012*

**english**

sue, my neighbor usually plants her flowers in april.

*November 14, 2012*

**algebra**

the price of a small cabin $85000 the bank requires a 5% down payment the buyer is offered two mortgage option 20-year fixed at 10% or 30-year fixed at 10% calculate the amount of interest paid for each option. how much does the buyer save in interest with the 20 year option?

*November 7, 2012*

**chemistry**

starting with a 30% (W/W) SOLUTION OF HYDROGEN PEROXIDE, how many mL would you need to dilute on order to end up with 25.00ml of a 3.6M hydrogen peroxide solution?

*November 5, 2012*

**math**

remember that the word "of" means times

*November 1, 2012*

**Math**

Steve, I see it clearly now....thank you

*November 1, 2012*

**Math**

(x+1)/3 + (3x - 2)/4 = (x + 5)/8 - (7x - 1)/6 - 37/12 I need the steps please...I know the answer

*November 1, 2012*

**math**

the way to write the decimal for 2 is simply 2.00. The decimal equivanlant for 3/4 is .75 add them together and you get 2.75 to find the decimal equivalant for any fraction think of it as a division problem, hence 3 divided by four = .75

*November 1, 2012*

**Math 115**

The area of a parallelogram is 3.36 square feet. The base is 2.8 feet. If the measures of the base and height are each doubled, find the area of the resulting parallelogram.

*October 30, 2012*

**Chemistry**

ÄSvap > 0 Give a molecular interpretation for

*October 25, 2012*

**math**

how to explain 0.26 and 0.260 are same

*October 23, 2012*

**Algebra**

Marie is 13years older than Joann. The sum of their ages is 55. How old is Joann?

*October 14, 2012*

**Science**

I can't find this answer in my book but can someone tell me if its right please? When you remove electrons from a metal cup, the cup becomes: negatively charged - positively charged or ionized? I think it is negatively charged. Thanks

*October 9, 2012*

**Algebra 2**

x+8<4 help me solve this please.

*October 5, 2012*

**college algebra**

x+8<4 help me self this please,

*October 5, 2012*

**Physics**

Two forces act concurrently on point P. One force is 85 N in a direction 35 degrees north of east. The second 95 N force acting at an angle of 227 degrees, what is the magnitude and direction of the resultant ?

*September 23, 2012*

**Science**

Can someone tell me if this is correct: How many forces act on an upwardly tossed coin when it gets to the top of its path? A. one the force due to gravity B. two gravity & the force in the coin itself C. three gravity the coins internal force & a turnaround force D. none of ...

*September 21, 2012*

**Physics**

An arrow is shot into the air at an angle of 60.3° above the horizontal with a speed of 21.2 m/s. What are the x- and y-components of the velocity of the arrow 3.1 s after it leaves the bowstring? What are the x- and y-components of the displacement of the arrow during the...

*September 17, 2012*

**SCIENCE**

When you drop a bowling ball & a tennis ball they hit the floor at the same time but when they hit the floor they have the same what? A. speed B. force C. momentum D. all of the above. I think it is D but I can't find anywhere what they have the same. Thanks

*September 7, 2012*

**Math**

Number is between 100 and 1000 The sume of the digits is 11. The tens digit is less than the hundreds digit. There are no zeros. It says to list all the possible answers (which I found 19) but also asks, "my answer is______ because ______" I think the answer is there...

*August 31, 2012*

**Science**

check answer please. An object is pulled with 3 forces: 1 at 20n to the right another at 40n to the right and the third at 30n to the left. The net force is 30n to right

*August 27, 2012*

**Science**

Can someone tell me how to figure this out. Fido weighs 120N & carries Trixie who weighs 40N on her back. The support force on fidos feet is. 160n - 40n - 120n -more than 160n

*August 27, 2012*

**Science**

When you stand at rest on a floor the number of vertical force acting on you is A 0 B 1 C 2 D 3 E 4

*August 27, 2012*

**Science**

A 50N object falling in air experiences 30N of air resistance. The amount of net force on the falling object is A 0n B 20n C 50n D 80n

*August 27, 2012*

**Science**

thank you I couldn't remember the formula

*August 27, 2012*

**Science**

At the end of 2 seconds of free fall an object released from rest will have a speed of A. 5m/s B 10m/s C 15m/s D none of the above

*August 27, 2012*

**Science**

You are a Chemical engineer, trying to synthesize N2H4(l). Your boss suggests that you try to synthesis it from the elements, nitrogen and hydrogen, at 25 celsius and 1.0 atm (since this would be a cheap way of doing it). Write a short note to sent to your boss which discusses...

*July 26, 2012*

**chemistry**

if 25.0g of O2 gas has a temperature of 400k and a pressure of 610 mm Hg, what is its volume?

*July 20, 2012*

**psychology**

teenage mothers who are sccustomed to existing hamburgers, french fries, and cokes need to consider the nutritional needs of the child. Researchers has shown that a poor diet can: A. restrict the development of eye and hair color. B. produce prenatal hearing loss. C. have ...

*July 6, 2012*

**psychology**

the research of solomon asch revealed that: A. participants in the study conformed to the erroneous group respose in one-half of the trials. B. All participants in the study conformed to the erroneous group response in each trial. C. Participants in the study conformed to the ...

*July 6, 2012*

**Government**

charters

*June 15, 2012*

**health**

how did you decide which jobs were eliminated

*June 3, 2012*

**math**

if shampoo costs 3.96 for 17 ounces what is the unit cost

*May 25, 2012*

**math**

What would the percentage be if I had 16 apples and 15 of them were yellow?

*May 25, 2012*

**Trig**

Find two values of theta that satisfy the equation. give your answers in degrees (0degrees <theta<360degrees ) and radians (0<theta<2pi) a. sin θ= sqrrt3/2 b.sin θ= - sqrrt3/2

*May 19, 2012*

**Trig**

Find the radian measure of the central angle of a circle of radius r that intercepts an arc of length s.? Radius, r=16 ft Arc length, s=10 ft

*May 18, 2012*

**math**

drawing several kinds of triangles including a right triangle, than draw a square on each of the sides of the triangles. compute the area of the squares and use this information to investigate whether the pythagorean theorem works for only the right triangles.(use a geometry ...

*May 16, 2012*

**math**

using thepythagorean theorem and if the quadrilateral with side c is a square.then compute thearea of the square with side a + b:(a) as (a + b)2 and (b) as the sum of the areas of the 4 triangles and the square withside c.

*May 15, 2012*

**math**

a company want to lay cable across a lake. to find the lengh of the lake, they madethe measurements 180ft and 150ft. what is the length of the lake?

*May 15, 2012*

**math**

a ramp is 1m above ground level and starts 3m from a building. how long is the ramp?

*May 15, 2012*

**algebra**

solve -9< 4x - 4< -3

*May 12, 2012*

**Algerbra**

Multiply -7/5 * (6/7)

*May 12, 2012*

**sti**

A researcher plans to use a sample of 500 men and women attending a well-known online university to study the relationship between the number of fast-food hamburgers consumed in a month and BMI (body mass index). The null hypothesis is that there is no relationship between ...

*May 10, 2012*

**Science**

If you have a 12M container of HCl avaliable. How much of this solution is needed to make up a 5.0L solution of 0.10M concentration?

*May 7, 2012*

**Science**

If you have a 500 mL of a 0.4M Nacl solution. How much water is needed to make is 0.1M solution?

*May 7, 2012*

**math**

Maria drives 69 mph and Ming drives 60 mph. How far apart will they be in 3 hours?

*April 19, 2012*

**Math**

A bag contains 5red balls and 4 white balls. Two balls are drawn at random from the bag. The first ball drawn is put back into the bag before the second ball is drawn. What is the probability that the two balls drawn are both red?

*April 16, 2012*

**Physics 100**

A 355-g piece of metal at 48.0 degree celsius is dropped into 111g of water at 15.0 degree celsius.If the final temperature of the mixture is 32.5 degree celsius what is the specific heat of the metal?

*April 16, 2012*

**physics**

waves propagate down a 25 gram string at 35 m/s. If the string has a length of 1.5 meters, what is the magnitude of the tension acting on it?

*April 16, 2012*

**Chemistry**

How many moles of ammonium sulfate were released in 25.3 kg?

*April 11, 2012*

**math**

Sharon brought 12 apples to the picnic. After the picnic, 2 apples were left. What fraction of the apples were eaten.

*April 10, 2012*

**us history**

Why did nonviolence prove to be a successful strategy for confronting segregation?

*April 4, 2012*

**UNIVERSITY OF PHONEX**

x=5-7 need to find the order pairs for this equation.

*March 26, 2012*

**math**

Meera arrived at her grandmother's house at 8:00 a.m. First they made cookies. At 10:00 a.m. they played tennis. At 12:30 p.m. they mde sandwiches. At 12:45 they ate the sandwiches and the cookies. How much time did Meera and her grandmother spend making food?

*March 19, 2012*

**math**

A seismograph 300km from the epicenter of an earthquake recorded a maximum amplitude of 5.8*10^2lrm, find this earthquake's magnitude on the RicHTER scale to the nearest tenth.

*March 12, 2012*

**Business communication**

I have to revise these sentences as if speaking to a 10th grade level in education. Can you tell me if these are correct: 1. We must terminate all deficit financing. Revision: We need to end all debts. 2. We must endeavor to correct this problem by expediting delivery. ...

*March 5, 2012*

**math**

thank you

*March 3, 2012*

**math**

a football player can run 20 yards in 3.4 seconds. write an equation to find y, the number of yards the football player can run in a second? i can't seem to figure this one out??

*March 3, 2012*

**math**

thank you!!

*March 3, 2012*

**math**

ok so now i have to write an equation for the following: two more than the number of frogs is 4. i think it is f+2=4 am i right?

*March 3, 2012*

**math**

thank you that is what i put, just wanted to be sure:)

*March 3, 2012*

**math**

help please!!! how do i write this as an algebraic expression: ten dollars more than grace has

*March 3, 2012*

**Chemistry**

A block of copper at 100 degrees Celsius comes in contact with a block of aluminum at 20 degrees Celsius. The final temp of the blocks is 60 degrees Celsius. What are the relative masses of the blocks?

*March 1, 2012*

**MATH**

ELLE IS MAKING A PATTERN.SHE IS USING RECTANGLES 1 CENTIMETER WIDE AND 2 CENTIMETERS TALL. WHAT WILL BE THE PERIMETER OF THE SIXTH SHAPE IN THE PATTERN?

*February 29, 2012*

**math**

No answer

*February 28, 2012*

**e-Commerce**

If I opened a business and was offered $1,000, should I sell or not? why? Cite the ethical dilemmas.

*February 22, 2012*

**Math**

15/8z+1/4=4 Please help me solve and show how you did it. Thanks

*February 11, 2012*

**Math**

a rectangular family room has 204 square feet of it takes 1 3/8 yards of material to make one shirt. how many shirts can be made from 16 1/2 yards of material? 1.1 2.3 3.6 4.12 5.24

*February 9, 2012*

**earth space science**

2.5 billion

*February 9, 2012*

**geometry**

If I want to cover a wall that is 10ft long by 3 ft high with 4"x4" tiles how many tiles do I need?

*February 8, 2012*

**Public Health**

Definately NOT ethical! Wow.

*February 5, 2012*