Saturday

December 3, 2016
Total # Posts: 2,398

**physics**

An electron ( mass = 9.11×10−31 kg) leaves one end of a TV picture tube with zero initial speed and travels in a straight line to the accelerating grid, which is 1.85 cm away. It reaches the grid with a speed of 2.95×10^6 m/s . (You can ignore the ...

*May 19, 2012*

**Physics**

A 1.07 kg block slides across a horizontal surface directly toward a massless spring with spring constant 4,794 N/m. The surface is frictionless except for a rough patch of length 0.461 m that has coefficient of kinetic friction 0.358. The initial velocity of the block is 4.12...

*May 14, 2012*

**child care management**

A teaching method that uses computers to help children learn is called ?

*May 12, 2012*

**Math 117**

What is the lcm 6y^2 and 12y^9

*May 7, 2012*

**Math 117**

What is the lcm 6y^2 and 12y^9

*May 7, 2012*

**math**

A sample of 64 statistics students at a small college had a mean mathematics ACT score of 28 with a standard deviation of 4. Estimate the mean mathematics ACT score for all statistics students at this college. Give the 95% confidence interval.

*May 6, 2012*

**math**

A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error of $10,000. Pilot studies suggest that the population standard deviation is $70,000. Estimate the minimum sample size needed to estimate the ...

*May 6, 2012*

**math**

A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval.

*May 6, 2012*

**Utech**

The 6th term of an A.P is twice the third and the first term is 3. Find the common difference and the 10th term.

*May 1, 2012*

**Utech**

The 9th term of an Arithmetic Progression is 8 and the 4th term is 20. Find the first term and the common difference.

*May 1, 2012*

**math**

3 bags of soil

*May 1, 2012*

**math**

Charlene is filling a box planter with soil.Each bag of soil contains enough to fill 500 cubic inches.If the base of the box planter is a 9-inch square and the sides are 18 inches tall,how many bags of soil will Charlene need?

*May 1, 2012*

**Statistics**

When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally distributed with standard ...

*April 29, 2012*

**social studies**

anyone hello plzzzz!!!!!!!!! anyone out there plzzzz!!@!!!!!!!

*April 26, 2012*

**social studies**

plzzzzzzz!!!!!!!!!!!

*April 26, 2012*

**social studies**

i need help with homework plzzzzzzz!!!!!!!!!!!!

*April 26, 2012*

**Math**

For $1.80 a grocer buys a case of fruit which contains 12 dozen. She knows that tow dozen will spoil before she sells them. At what price per dozen must she sell the good ones to gain 1/3 of the whole cost?

*April 25, 2012*

**Math**

In printing an article of 30,000 words, aprinter decided to use two sized of type. Using the larger type, a printed page contains 1,200 words. Using the smaller type, a page contains 1,500 words. The article is allotted 22 pages in a magazine. How many pages must be in the ...

*April 25, 2012*

**Math**

Three individuals form a partnership and agree to divide the profits equally. X invests $4,500, Y invests $3,500 and Z invests $2,000. If the profits are $1,500, how much less does X receive than if the profits were divided in proportion to the amount invested?

*April 25, 2012*

**Math**

Our baseball team lost 9 games this season. This is 3/8 of all they played. How many games did they play this season?

*April 25, 2012*

**Math**

Answers for A clock was exactly on time at noon on Monday. At 2 P.M. on Wednesday, it was 25 seconds slow. At that same rate, how much did it lose in 1/2 hour?

*April 25, 2012*

**math**

62.85

*April 19, 2012*

**algebra**

the weight of a symetry ball varies directly with the cube of it's radius a ball with the radius of 2 inches weighs 5.60. find the weight of a ball with a 3 inch radius

*April 18, 2012*

**Networking**

A firm is assigned the network part 128.171. It selects a 10-bit subnet part. a)Draw the bits for the four octets of the IP address of the first host on the first subnet. b)Convert this answer into dotted decimal notation. c)Draw the bits for the second host on the third ...

*April 18, 2012*

**Math**

a rectangle of integer dimensions is filed with 1x1 tiles. Each tile that touches the perimeter is colored red, while all the "interior" tiles are left white. Let R be the number of red tiles and W the number of whites tiles find R and W for a 3x10 rectangle find any...

*April 11, 2012*

**Algebra 2**

A photograph that is 4" by 6" is to be enlarged so that the width of the new photograph is 10". What is the length of the new photograph?

*April 6, 2012*

**math 102**

The outside dimensions of a piece of framework is 24 inches by 20 inches. The area of the picture is 320 square inches. Find the width of the frame itself

*April 1, 2012*

**Operations Management**

# 1 - Review the Capacity Tradeoffs section that begins on page 145 of the course text. # 2 - Review the information under the Capacity Planning in Services section on page 150 of the text. By reading the course materials, these answers should be readily available to you.

*April 1, 2012*

**math 102**

what number multiplied by the numerator and added to the denominator of the fraction 2/5 makes the resulting fraction 8/9?

*March 28, 2012*

**Algebra**

A rectangular pen for a pet is 5 feet longer than it is wide. Give possible width of the pen if its area must be 204 and 750 square feet, inclusively.

*March 26, 2012*

**math**

Which of the following situations cannot be represented by the integer 10? F a balloon rises 10 ft into the air G the stock market gains 10 points H the town lies 10 ft below sea level I Jon received a gift of $10

*March 25, 2012*

**math**

15/100 * $12 $ 1.8

*March 24, 2012*

**math**

x+3=57

*March 22, 2012*

**algebra**

can you check my answers please? What are the first three terms of the sequence: a1 = 3 and an = 2(an1)2? 2, 8, 18 3, 18, 648 --3, 32, 50 2, 6, 12, 24 What is the 14th term in the sequence: an = 4n + 13? -43 43 __> -69 69 What is the recursive rule for the sequence: −...

*March 22, 2012*

**Algebra 1**

if i have 550 students and there are 144 more boys than girls how many girls are in class

*March 15, 2012*

**Pre-calc**

use either substitution or elimination 4/x-3/y=0 4y=3x

*March 14, 2012*

**math**

282,000

*March 10, 2012*

**chemistry**

you cannot isolate X by its self without using the quadratic equation: x = -B +or- square-root(B^2 - 4AC) ------------------------------ 2A

*March 9, 2012*

**HCS/457**

Reviews two to three news articles Determines a local community health care issue. Paper answers following questions: How long has it been a problem? How has it affected the community? How has the community responded? Organization/Development The summary is 350 to 700 ...

*March 3, 2012*

**MAth(algebra)**

7/2x - 5/x = 5 solve the equation check your answer

*February 25, 2012*

**Algebra**

There are 37 students in an algebra class. there are 9 more girls than boys. how many boys and how many girls are in the class? I have to use systems of equations to solve.

*February 23, 2012*

**Science**

b precipitation

*February 21, 2012*

**Pre-Algebra**

thanks for your help ms.sue .

*February 15, 2012*

**Pre-Algebra**

Can somebody help me... I need to know how to do 2x - 8 = 16

*February 15, 2012*

**Math **

Yessica needs to buy some wood to build a box. She mu8st calculate the surface area of the box to determin ehow much wood to buy. The box must me 2 feet long and 3 feet wide. I need the answer to this question ?

*February 13, 2012*

**Chemistry**

ln (A)t - ln(A)o = -kt ln2.00x10-2 - ln(9.30x10-2) = -.68 t t = 2.26s Hope this is right!

*February 9, 2012*

**statistics**

18 young adults you need 108 cups of water and 72 cups of water show how to sclae down this ratio to feed 3 young adults

*February 9, 2012*

**Public Health**

Warnings for an outbreak of an Asian avian virus have been circulating since 1997, although only isolated incidences have occurred since then. Still, reputable scientists are still concerned that this virus could mutate at any time and cause a world-wide health crisis. a. Is ...

*February 9, 2012*

**physics**

Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The object m1 is held at rest on the floor, and m2 rests on a fixed incline of θ = 38.0°. The objects are released from rest...

*February 9, 2012*

**Public Health**

A screening test was used to identify carriers for a gene causing prostate cancer. Discuss the social, legal, and moral implications of using the results of the test.

*February 7, 2012*

**English**

Which statement about the narrator's son is the best example of pathos? A. "The boy had a good appetite, so I didn't have to make him eat." B.He was four, a little brown boy in blue rompers, and when he talked and laughed. . .his voice was soft. . ." C.I...

*February 6, 2012*

**Public Health**

A screening test was used to identify carriers for a gene causing prostate cancer. Discuss the social, legal, and moral implications of using the results of the test.

*February 5, 2012*

**Public Health**

Do you think it is ethical not to report the side effects of an experimental drug to the government because the beneficial effects are more important? Why?

*February 5, 2012*

**Geometry**

I Need help doing a geometry proof. In the figure below, PQ=RS. Prove PR=QS. ____________________ P Q R S

*February 5, 2012*

**Public Health**

Do you think it should be mandatory to test for congenital anomalies during pregnancy?

*February 3, 2012*

**Public Health**

What significance does the discovery of human genes have for disease prevention and health promotion?

*February 3, 2012*

**Public Health**

There is an airborne disease that is highly contagious and deadly. It is suspected that a passenger in a flight coming from overseas is infected. You are the infectious disease specialist and decide to keep the passengers on the plane until preventive measures are taken. Do ...

*February 3, 2012*

**Math**

From an exterior point P that is h units from a circle of radius r, a tangent line is drawn to the circle. Let y denote the distance from the point P to the point of tangency T. Express y as a fuction of h.

*January 29, 2012*

**Public Health**

In the state of California everyone is provided free healthcare. Research and analyze the affects of social support for public health. Has this program been successful? Evaluate some of the positive and negative aspects of socially supported programs and the long term health ...

*January 27, 2012*

**Public Health**

Your community leaders have noticed an increase in positive STD test reports from the CDC. The nearest health department is more than 30 miles from your community. How might a community become involved in making public health interventions more effective in this situation?

*January 27, 2012*

**Public Health**

well what about mexico?? i read that latin cultures are 3rd in the obesity ranking....

*January 20, 2012*

**Public Health**

well i believe Spanish groups are at risk of obesity than any other ethnic group because they prepare big meals and eat a lot of meals a day....what do you think?

*January 20, 2012*

**Public Health**

just immigration in general

*January 20, 2012*

**Public Health**

any immigrants its a general question

*January 20, 2012*

**Public Health**

How do you think immigration of some ethnic groups has affected their risk of obesity and other chronic diseases? What intervention do you think can help to reduce obesity in children?

*January 20, 2012*

**science**

Ok listed below is the question. I have chosen to use incarcerated women with a mental illness: nature vs. nurture. Population will be women who have been incarcerated and diagnosed with a mental illness between the ages of 18 and 50. I am having trouble identifying what the ...

*January 18, 2012*

**architecture**

Umm help I don't get the difference between 3 minimize 4 with 2 squared in it's place I'm college btw

*January 5, 2012*

**Math**

No you're right!(;

*January 5, 2012*

**HELP!!!!!Piecewise function**

I have to show all my work and I am unsure how to do that??

*January 4, 2012*

**HELP!!!!!Piecewise function **

State the values for f(0) and f(-2) show all your work f(x){(2x-1 if x>1 ,-4 if -1¡Üx<1,2-x^2 if x<-1)

*January 4, 2012*

**algebra**

The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall? In answering this problem follow the steps below: 1. Represent the height as ‘x’ and then write the width in terms of x (for example, 2x, 5....

*January 3, 2012*

**logarithms**

Solve the logarithm equation. Express the solution in exact form only. log[6](64x^3+1)-log[6](4x+1)=1

*January 3, 2012*

**College Algebra**

Solve the following equation in the complex number system x^4+x^3+4x^2+10x-60=0 College Algebra - Reiny, Monday, January 2, 2012 at 11:49pm hint x = 2 and x = -3 are roots so either do long division by x-2 and x+3 to get a quadratic or do it by synthetic division. Solve that ...

*January 3, 2012*

**College Algebra**

so what would my equation be to figure this question out?

*January 2, 2012*

**College Algebra**

Solve the following equation in the complex number system x^4+x^3+4x^2+10x-60=0

*January 2, 2012*

**piecewise function**

State the value of f(0)and f(-2) and Graph

*January 2, 2012*

**piecewise function**

f(x)={2x-1 ifx>1 {-4 if -1¡Üx<1 {2-x^2 if x<1

*January 2, 2012*

**Functions**

Given the following function f(x)=-x^2-10x. Find the domain, range and decreasing intervals?

*January 2, 2012*

**math**

The area of the wall you are going to paint is 50 feet2. If the width is half the height, what are the dimensions of the wall? In answering this problem follow the steps below: 1. Represent the height as ‘x’ and then write the width in terms of x (for example, 2x, 5....

*January 2, 2012*

**College Algebra... HELP**

Thx! could u help me with graphing this

*January 1, 2012*

**College Algebra... HELP**

First I have to figure out the domain,rande and vertical asymptotes

*January 1, 2012*

**College Algebra... HELP**

Determine the domain, range, and vertical asymptote.Graph f(x)=-6-Inx

*January 1, 2012*

**College Algebra**

verify that the functions of f and g are inverse of each other by showing that f(g(x))=x and g(f(x))=x; f(x)=In(x-1),g(x)=1+e^x

*January 1, 2012*

**ENGLISH-HELP!!!!**

How does Euripides portray the realtionship between the human and the divine in the Bacchae?

*December 14, 2011*

**Intermediate algebra**

The number of trout in America, since 1970, is given by the following: y = x2 + 3x + 2 Where x is the number of years and y is the number of trout in the millions. What is the number of trout in the years 1975, 1980, and 1985? Describe the trend of the numbers of trout as the ...

*December 13, 2011*

**Statistics-hypothesis testing**

thank you

*December 13, 2011*

**I am really in need of someone help! Please**

A researcher has collected statistics pretest scores for students representing 3 different age groups 18-30 31-45 45 and up 3 5 10 7 10 2 9 9 8 6 8 8 4 6 5 Do hypothesis test using ANOVA to find if significant difference. Use alpha .05. All hypothesis steps and find degrees of...

*December 13, 2011*

**Math- Anova**

A researcher has collected statistics pretest scores for students representing 3 different age groups 18-30 31-45 45 and up 3 5 10 7 10 2 9 9 8 6 8 8 4 6 5 Do hypothesis test using ANOVA to find if significant difference. Use alpha .05. All hypothesis steps and find degrees of...

*December 13, 2011*

**Can anyone do statistics?**

ok thank you. I was really hoping to find someone to help. I am so stumped

*December 13, 2011*

**math-probability**

I am sorry i am confused? Is it 10/49 or is the answer 7/7?

*December 13, 2011*

**PLEASE HELP ME!!!**

A researcher has collected statistics pretest scores for students representing 3 different age groups 18-30 31-45 45 and up 3 5 10 7 10 2 9 9 8 6 8 8 4 6 5 Do hypothesis test using ANOVA to find if significant difference. Use alpha .05. All hypothesis steps and find degrees of...

*December 13, 2011*

**Chemistry**

counts/min time(hours) 800 0 713 1 450 5 200 12 112 17 a. 5h b. 6h c. 12h d. 99h

*December 10, 2011*

**Chemistry**

The table wasn't available

*December 10, 2011*

**Chemistry**

Tc-99 is a radioactive isotope that decays by beta emission and is used by radiologists in the diagnosis of liver disease. Its decay behavior is shown by the activity-time table. What is its half-life?

*December 10, 2011*

**statistics**

The probability any one widget is free of defects is 0.93. For quality control purposes the company is concerned about bad batches of widgets. If the widgets are shipped in batches of 20, find the probability of at most 2 defective widgets in one batch.

*December 9, 2011*

**science**

help me plz

*December 8, 2011*

**Creative Writing**

mainly about a jewish breast cancer organization called sharsheret, which is hebrew for chain, it links young jewish women all over the world to eachother so they can speak about their illness. and i am also focusing on the gene mutation BCRA 1 and 2 that is most commonly ...

*December 5, 2011*

**Creative Writing**

Anyone have any suggestions for a title on an essay about breast cancer?

*December 5, 2011*

**trig**

a 30 foot ladder leans against a wall at a 71 degree angle of elevztion find the distance of a ladder's base to the wall

*December 3, 2011*

**math**

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ___________ > 4 x is her last score which has not been taken. ...

*November 30, 2011*