Questions Asked on
June 17, 2010

physics
A uniform 8 m 1500 kg beam is hinged to a wall and supported by a thin cable attached 2 m from the free end of the beam as shown in the figure. The beam is supported at an angle of 30 degrees above the horizontal. a) free diagram b) find the tension in the
asked by Anonymous 
Chemistry
What volume of 0.300 M Na3PO4 is required to precipitate all the lead(II) ions from 140.0 mL of 0.400 M Pb(NO3)2? I desperately need help with this, I cannot figure it out, my mind is bleeding.
asked by Casey 
Calculus
"At 9am ship A is 50 km east of ship B. Ship A is sailing north at 40km/h and ship B is sailing south at 30km/h. How fast is the distance between them changing at noon?" I can never get these type of questions where two ships are heading in different
asked by Stuck 
Calculus
AN ISOSCELES TRIANGLE IS TO HAVE A PERIMETER OF 64CM. DETERMINE THE SIDE LENGTHS OF THE TRIANGLE IF THE AREA IS TO BE A MAXIMUM.
asked by Anonymous 
CALCULUS
The voltage signal from a standard European wall socket can be described by the equation V(t)=325sin100 pi x , where t is time, in seconds and V is the voltage at time, t. Find the max and min voltage levels and the times at which they occur. Thanks in
asked by Anonymous 
Statistics
Suppose I am using the tdistribution to estimate or test the mean of a sample from a single population. If the sample size is 25, then the degrees of freedom are ____? I have an answer of 26 is this correct
asked by Jacob 
Math  Magic Square???
My daughter is in 2nd grade and has a worksheet called Magic 26. It wants her to use the numbers 1 12. Each row, column, and diagonal must equal 26. The four corners and four center numbers must equal 26 too. (example of puzzle below) Please help solve.
asked by Janel 
computer science
Pseudo code: Input a list of employee names and salaries, and determine the mean (average) salary as well as the number of salaries above and below the mean
asked by Mark 
statistics
A survey found 70% of adults over 50 wear glasses. In a random sample of 10 adults over 50, what is the probability that exactly six wear glasses and at least six wear glasses
asked by Phyllis 
Calculus
A ship is sailing due north at 12km/h while another ship is observed 15km ahead, travellers due east at 9 km/h. What is the closest distance of approach of the two ships?
asked by Anonymous 
geometry
cutting a circle into equal sections of a small central angle to find the area of circle by the formula a=pi*r*r
asked by k.c. 
physics
The question has three parts, it looks like a lot but it is just description, trying to understand relationships. 1. You toss a coin straight up into the air. Sketch on the axes below the velocitytime accelerationtime graphs of the coin from the instant
asked by college 
Science (evolution)
Given Darwin’s Theory of Evolution, what scientific evidence best supports evolution by natural selection?
asked by Diana 
Statistics
Can a frequency distribution have overlapping classes? Sometimes No Yes Can't determine. I need more information my answer is sometimes, but i believe this to be incorrect
asked by John 
statistics/probability
One statistic used to assess professional golfers is driving accuracy, the percent of drives that land in the fairway. Driving accuracy for PGA Tour professionals ranges from about 40% to about 75%. Tiger Woods hits the fairway about 60% of the time. One
asked by Natash 
Statistics
In a random sample of 508 judges, it was found that 281 were introverts. Let p represent the proportion of all judges who are introverts. Find a point estimate for p. Round your answer to four decimal places. I am needing assitance in trying to figure out
asked by Jacob 
Comm/215
Have you ever read the story, "The TellTale Heart," by Edgar Allan Poe? Dave asked. Have I written this correctly?
asked by David 
math 9
in a park some people are launching model rockets to find the maximum height,x,the rocket reaches, a person stands 50.0m from the launch sight and measure the angle from the ground to the rocket at its maximum height. if the angle is 36 then the maximum
asked by steph 
Statistics
Suppose a certain species bird has an average weight ofx=3.55 grams. Based on previous studies, we can assume that the weights of these birds have a normal distribution with 0=0.37 grams. For a small group of 15 birds, find the margin of error for a 70%
asked by Jacob 
wossmaan
the nuttyy shoppe has 10 kg of mixed pecans and cashews which sell for $8.40 per kilograms.cashews alone sell for $8 per kilogram,and pecans sell for $9 per kilogram.how many kilograms of pecans are there in the mix?
asked by montrell willaims 
statistics
A shipment of 30 computers contains four that are defective. How many ways can a small business buy five of these computers and receive no defective ones
asked by cassandra 
Statistics
Which of the following can be classified as Discrete and Quantitative data. The acceleration of your car as you drive to school. my answer was number of neighbors still unsure of this though The different colors of the eyes of your classmates. The number
asked by Jacob 
trig
a vertical pole 3 meters tall casts a shadow 1.8 meters long. what is the angle of the elevation of rhe sun to the nearest minute?
asked by shanda 
Calculus
Radius decays at a rate of that is proportional to its mass, and has a halflife of 1590 years. If 20 g of radium is present initially, how long will it take for 90% of this mass to decay?
asked by Anonymous 
Statistics
Which of the following can be classified as Discrete and Quantitative data. The acceleration of your car as you drive to school. my answer was number of neighbors still unsure of this though The different colors of the eyes of your classmates. The number
asked by John 
math
You have 10 boxes and 44 marbles. Is it possible to put all of your marbles in the boxes in such a way that each box contains a different number of marbles?
asked by Linda 
Math Data Management
how many ways can the letters ALABAMA be arranged: a) If there are no restrictions except indistinguishable letters? b) If the letters B and M must be togheter?
asked by Almaasak 
math
The distance an automobile can travel in h hours at an average rate of 50 miles an hour is found y the formula d=50h. Problem: A car was driven for 3 hours. The driver then stopped 3/4 of an hour for lunch. After lunch he drove for 2 and 1/2 hours, then
asked by april 
Algebra
Observe the following sets and answer he quesions given below. A = The set of all residens in Mumbai. B = he set of all residens in Bhopal. C = he sets of all residents in Maharashtra. D = The sets of all residents in India. E = The sets of all residents
asked by Ratan 
Differences
what differences are there between plant and animal cell division. Already checked the sites.
asked by Anonymous 
Statistics
Can a frequency distribution have overlapping classes? Sometimes No Yes Can't determine. I need more information my answer is sometimes, but i believe this to be incorrect
asked by Jacob 
college
A test is composed of six multiple choice questions where each question has 4 choices. If the answer choices for each question are equally likely, find the probability of answering 3 OR 4 questions correctly.
asked by poe 
Algebra
I'm really stuck on these 2. Can you please explain the work clearly so that I can understand and find the answer easily, if already not given. Need help with these 2 please 19. Nancy invests $100 in one account for 10 years at a 9% interest rate
asked by mysterychicken 
Algebra
The hydrogen ion concentration of milk is about 1.6*10^7 moles per liter. Find the pH.
asked by Kate 
math
Consider a state lottery that has a weekly television show. On this show, a contestant receives the opportunity to win $1 million. The contestant picks from four hidden windows. Behind each is one of the following: $150,000, $200,000, $1 million, or a
asked by Leslie 
math
The distance an automobile can travel in h hours at an average rate of 50 miles an hour is found y the formula d=50h. Problem: A car was driven for 3 hours. The driver then stopped 3/4 of an hour for lunch. After lunch he drove for 2 and 1/2 hours, then
asked by april 
math
a student council collects aluminium pop tabs to raise money to purchase a wheelchair. A company buys the pop tabs for $0.88 per kilogram. If 1267 poptabs have a mass of one pound, how many pop tabs are needed to purchase a wheelchair worth $1500? ***with
asked by shahroz 
division differences
use table to compare appearance of the dividing plant cells with the appearance of the dividing animal cells. dividing of plant cells= divide the cytoplasm between the 2 new nuclei by forming cell wall between nuclei. i need dividing animal cell help.
asked by Anonymous 
chemistry 121
how can i write the electron configuration for copper (ii)
asked by ngugi 
geography
hi,i have make a project on hurricane Katrina on disaster management pls help to get information pls pls help me............
asked by varsha 
statistics
A travel agency offers 4 different vacation packages to Europe. Their net profit for package 1 is $500, for package 2 it is $750, for package 3 it is $900, and for package 4 it is $1,500. From past experience they know that 20% of their customers purchase
asked by cassandra 
Onion root tip
Which areas of onion root tip have greatest amount of cell division?
asked by Anonymous 
Busine
Briefly explain what is meant by objective and judgmental performance evaluation. Discuss two methods of judgmental evaluation. 5. (TCO 8) Briefly describe the purposes of job analysis and the two documents that often result from it. 6. (TCO 9) List the
asked by amber 
health
Compose a list in which you identify the major components of health communication. Who is involved in each component? How does each component promote health communication? If not utilized, how would it reduce health communication? Provide examples.
asked by JHMamma 
physics/orbital speed
an asteroid orbits the sun at a constant distance of 4.44e+11 meters, the suns mass is 1.00*10^30kg, what is the orbital speed of the asteroid? Please explain step by step thanks
asked by student 
Comm/215
Q: Some students hate math, some students dislike math, and math is liked by other students. Parallel Construction A: Some students hate math, some dislike math, and some like math. Is this correct?
asked by David 
vectors
how do you determine if two vectors are a) Collinear b) orthogonal?
asked by Ariza 
l2l
If I had 10 trees and i had to plant them in 5 rows of 4 how would it work i need to do this
asked by Jazz 
Statistics
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by selecting the box containing it. Before each game, the old prize is removed and another prize is placed at random in one of the six
asked by Jacob 
Math
The graph of y = f (x) = b^x, where b > 1, is translated such that the equation of the new graph is expressed as y – 2 = f (x – 1). The range of the new function is A. y > 2 B. y > 3 C. y > –1 D. y > –2 the answer is B?? i am really confused in
asked by Jessica 
Comm/215
Is this a fragment? The local baseball team, needing a good pitcher most of all.
asked by David 
marketing
Select a product or service you would like to introduce to the marketplace. It may be from an existing company or a new concept. Prepare a 1,750 to 2,100word marketing plan for your selected product or service. Include the following elements: A brief
asked by george 
Algebra
Need to get these problems checked 21. Suppose inflation of money is at a rate of 3% per year in the US. How much will a $1 candy bar cost in 30 years? 1.03^30 * 1= $2.43 22. Find the next 3 terms of the geometric sequence 4, 10, 25. 125, 625, 3125?
asked by mysterychicken 
Comm/215
I don't know what you want me to do, the directions are not clear. __ Sentence fragment __ Comma splice __ Runon sentence __ Complete sentence (contains no error)
asked by David 
Calculus
The height above the ground of a rider on a large Ferries wheel can be modelled by h(t)=10sin(2pi/30 t) + 12, where h is the height above the ground, in metres and t is the time in seconds. What is the maximum height reached by the rider and when does it
asked by Anonymous 
Math
The graph of y = f (x) = b^x, where b > 1, is translated such that the equation of the new graph is expressed as y – 2 = f (x – 1). The range of the new function is A. y > 2 B. y > 3 C. y > –1 D. y > –2 2)If log7 m = log 2/3 , then the value of m,
asked by Jessica 
Comm/215
Did the professor say “Put down your pencils?” Janice asked. I wrote this is it correct?
asked by David 
Comm/215
Is this a fragment? That movie, one of my favorites.
asked by David 
spanish
El profesor _____,y el estudiante _____. a. termina las clase/empieza la clase b. ensena/estudia c. ensenar mucho/estudiar d. empieza la clase/terminar I think B? There are squiggly things over the N's in ensena and ensenar.
asked by Lily 
algebra
Put the equation in the form ax2 + bx + c = 0. Enter exponents using the caret ( ^ ). For example, you would enter 4x2 as 4x^2. 4x^2+5x=(3x1)^23x^2
asked by trevor 
calculus
Find a vector perpendicular to the plane that contains the points A(1,2,3), B(3,2,1), and C(1,2,3) Where do I start to find it?
asked by Jake 
government
how may the large difference in life expectancies in bangladesh and france reflect living conditions in those countries
asked by Sheldon 
Vectors
Determine two unit vectors that are perpendicular to both a=[5,6,2] and d=[3,3,8].
asked by Anonymous 
Business Math
IF Joseph deposits $1,000 at yearend for the next 35 years, assuming he makes one yearly deposit of $1,000 at 5% compounded annually, how much interest would he earn?
asked by Kiesha 
Statistics
I am having trouble understanding standard normal distribution such as if p(z
asked by Jacob 
Comm/215
Is this a fragment? Using a flashlight, he looked under the bed for his shoes.
asked by David 
Calculus
The perfect Pizza Parlour estimates the average daily cost per pizza, in dollars, to be C(x) = (0.00025x^2 + 8x + 10) / x Determine the production level that would minimize the average daily cost per pizza. What is the minimum average daily cost?
asked by Anonymous 
Comm/215
I like chocolate she likes butterscotch. __ Sentence fragment __ Comma splice __ Runon sentence __ Complete sentence (contains no error)
asked by David 
physics
Brandon throws a flying disc with a force of 8 N. If the disc has an acceleration of 4 m/s2, what is the mass of the disc?
asked by Bree 
science
Provide specific examples from the Bridger Teton video as you defend your position.
asked by kc 
physics
How long does it take a car moving at 80 m/s take to travel 450 m?
asked by Brittani 
programming
John: 50,000 Joe: 30,000 Jane: 60,000 Jill: 25,000 Total: 165,000 Declare employees [4] Of Reals Declare Sum, Average As Real Declare salaries As Integer Set Sum = 0 For salaries = 1 Step 1 To 4 Write “Average salaries ”, salaries Input Rain[K] Set Sum
asked by Anonymous 
science
My teacher says water can boil at temperatures other than one hundred degrees centrigrade! Is she right? What could cause that?
asked by ginnifer 
Statistics
I am having trouble understanding standard normal distribution such as if p(z
asked by Jacob 
Comm/215
Cats, unlike dogs, are fond of sitting on laps. __ Sentence fragment __ Comma splice __ Runon sentence __ Complete sentence (contains no error)
asked by David 
SelfEmployed
Can someone proofread the text before I place it in the about us section on a website I'm creating. Bryan Martin, Freelance Marketer, has been promoting and marketing businesses since 2008. He began studying how business operates and their potential grow
asked by Bryan 
algebra 1
the question is: What is the sum of 5 radical 7 and 3 radical 8? i don't understand how to solve this because i cant pull out a perfect square
asked by lauren 
Calc
I'm kind of rusty on my calc here... ok ther's a graph of velocity vs time w/ velocity in m/s and time in seconds were time is of course the xaxis k I'm asked to describe how the velocity changes over the timer interval in this interval the graph consists
asked by Kate 
math
HOW TO SOLVE THIS? sql 8( sql 10  1 ) PLEASE IT IS URGENT !!!!
asked by lana 
math
HOW TO SOLVE THIS? sqrt(8)( sqrt(10)  1 ) PLEASE IT IS URGENT !!!!
asked by lana 
Comm/215
I was surprised by how successful Janice ____. had became or became? They both sound correct.
asked by David 
Comm/215
In retrospect, Jason shouldn't have taken that important business call right after he had been___. __ awake __ awaked __ awakened __ awaken The answer is awakened, correct?
asked by David 
Comm/215
Investing in pure research ___ yields no immediate profit, can be hard to justify when a company is in financial difficulties. __ who __ which __ , which __ that , which is would be correct?
asked by David 
college
The results from an independentmeasures research study are being used to estimate how much difference there is between two treatments. If the study used a total of n = 10 participants, then the t values for a 90% confidence interval would be __________.
asked by KiKi 
Comm/215
Q: There are two reasons why. I like baseball. It is fun. And good exercise. A: There are two reasons why I like baseball, it is fun and good exercise. Is this correct?
asked by David 
Comm/215
Q: One of my friends want to attend my graduation ceremony. I hae to make subject and verb agree, should I change want to wants?
asked by David 
statistiss
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the
asked by john 
Calculus
The power, in amps, transmitted by a belt drive from a motor is given by the function P(v)= 100v  3/16 v^3 . For what value of v is the power at a maximum value? Thanks in advance!
asked by Anonymous 
algebra
Simplify i^10 How exactly do I solve for this?
asked by Kim 
Comm/215
I am trying to understand these pronouns. The sentence below is a number shift, corret? The teacher said they were going to grade the test over the weekend.
asked by David 
History
What does the treatment of the colonies by their European powers tell you about their views of these colonists and natives?
asked by Keith 
Calculus
Determine the equation of the line perpendicular to Y=1/2 e^(x +1) at its yintercept.
asked by Anonymous 
Comm/215
I had hoped the police would blame Bruce, not ___. __ me __ myself __ mineself __I Would me be the correct answer?
asked by David 
Comm/215
Q: Studying is hard work many students find they study better when they take regular breaks. A: Studying is hard work, many students find they study better when they take regular breaks. Is this correct?
asked by David 
Math
In the tests of a new pharmaceutical product, data were collected for use in the approval process required by theU.S. Food and Drug Administration (FDA). Some participants were given a placebo, an inert substance that looks like the drug; others were given
asked by Anonymous 
algebra
simplify the following radical expression: sqrt x * sqrt x a) x b) sqrt x c) 2 d) no solution exists do you know any site that will help me with the square roots? thanks!
asked by anthony 
English
1. A: Is Don in? 2. B: This is he. 3. B1: This is him. (This is a telephone conversation. Can we use both 2and 3? Which one is grammatical?)
asked by rfvv 
Comm/215
In this sentence there is no pronoun error, correct? Sarah told Janice that she made the honor role.
asked by David 
Comm/215
Dave hoped that HE and Steve would win the tennis tournament. Would HE be correct?
asked by David 
physics
How far does a train moving at 800 m/s travel in 80 s?
asked by Brittani 
Communication and Gender Studies
Why do boys not like to read books about girls?
asked by Breann 
Comm/215
Q: Some tests are so hard that no one does well on them other tests are too easy and don't really test comprehension. A: Some tests are are so hard that no one does well on them, other test are too easy and don't really test comprehension. Is this correct?
asked by David 
business
I'm tring to get on the right page of doing a business model for walmart tring to find the organization,commerce and occupation
asked by kim 
Comm/215
Q: People know they are going to have to retire. They often don't save enough money to do so comfortably. Have to make one subordinate. Peaople know they are going to have to retire, often they don't save enough money to do so comfortably. Is this right?
asked by David 
8th grade
How Do you do Factorising? Thankyou Jess
asked by Jess 
English
1. I have got a cell phone. 2. I have a cell phone. 3. I've got a cell phone. (What is the use of 'have' and 'have got'? Which one is a colloquial expression?)
asked by rfvv 
English
(Question)Which do we use as an objective complement, an objective case or a subjective case? And would you let me know some examples? 1. I think the girl she. 2. I think the girl her. (What about these examples?)
asked by rfvv 
algebra
simplify the following radical expression: 3 sqrt (27) a) 3 b) 3 c) 0 d) no solution exists do i write the sqrt like this or do i write like this sqrt () 3 27 please show me the correct way to write it thanks
asked by anthony 
10th grade
Bert viewed the hot dog provincial, beliving that to eat such a disgusting food was beneath him
asked by Anonymous 
CALCULUS
Differentiate: P(t)=50(2)^(t/2)
asked by Tasha 
English
Can someone tell me what they are asking? Write five sentences in which you address changes in your writing
asked by Mary 
math
Please give am example for this formula: Debt servicing burden + (Debt payment rulegrowth in wage)+ Price inflation rate
asked by Carla 
Pharmacy calculations
is this correct? Ordered: Vistaril 10 mg p.o. q.i.d. On Hand: Vistaril 25 mg per 5 mL Label: Amount to administer: p.o. = by mouth q.i.d. = four times a day 25:5::10:x x= (10*5)/25 = 50/25 = 2 Give 2 ml four times a day
asked by Bonnie 
Mechanics
If a stone falls past a bird on a ledge moving at 4 m/s, how fast will the stone be moving just before it hits the ground below 9 seconds later?
asked by Anonymous 
math
ugh,why is math so difficult and what can i do to make it easier?
asked by april 
MATH
HOW TO SOLVE THIS? ã8(ã101) PLEASE IT IS URGENT !!!!
asked by lana 
Comm/215
The company president inspired his employees, charmed the press, and redefined his company's strategic plan. This is parallel, correct? inspired, charmed, redefined
asked by David 
Comm/215
A venture capitalist has to be willing to take risks when ___ invests ___ money. __ they /their __ he / his __ she /her __ he or she /his or her Answer he or she / his or her Correct?
asked by David 
Comm/215
The clown juggles, makes balloon animals, and will paint faces. I think this sentence is parallel, am I correct?
asked by David 
Comm/215
Many times people will ask a writer where ____ gets ____ ideas. __ they /their __ he / his __ she /her __ he or she /his or her he or she / his or her correct?
asked by David 
Math
Fully Factor each question x(lil2)x6 and 2x(lil2)+11x+5
asked by Meech 
Comm/215
Q: The hurricane destroyed some oil rigs. Fuel prices rose. How do I make one subordinate to the other. The hurricane destroyed some oil rigs, and fuel prices rose. Is this correct?
asked by David 
Comm/215
Q: To succeed in the new economy, workers will have to learn throughout their careers, adapt to changing circumstances, and selfmotivation will be needed. Parallel Constructtion A: and selfmotivate when needed. is this correct?
asked by David 
algebra
49a^4112a^2b^2+64b^4
asked by maria 
algebra
at what value of x does the perpendicular bisector of the line segment with endpoints (2,6) and (5,4) cross the xaxis?
asked by alex 
Comm/215
Thank you, do you have a pronoun link? I have to decide if sentences have these Pronoun shift in number Pronoun shift in person Ambiguous reference
asked by David 
Reimbursement Methodologies
Medicare & Medicaid financial issues put constraints on: 1. Physician Svcs. 2. Critical Care Centers 3. Public Hospitals 4. Outpatient Svcs.
asked by Jean 
healthcare
list and describe the four steps necessary to establish the proper ICD9CM code.
asked by liz 
english
Can you tell me what this means PLEASE provide at least two specific examples of changes you have implemented based on what you learned this week. Thank you
asked by Mary 
math
how do you find the b when A=12 square feet and h=2.0 feet?
asked by april 
chemistry
How would I find the number of Kcal energy released per mole of C8 H18 combusted?
asked by Anonymous 
math
what does pi equal?
asked by april 
Comm/215
I think this is a Ambiguous reference, would I be correct When one buys insurance, you need to be clear about your needs.
asked by David 
math
how do you multiply pi by 218? how do you multiply a decimal with a whole number?
asked by april 
math
can you make 4/3 a whole number?
asked by april 
comm/215
is this sentence correct? The new employees worked long hours, hoping doing so would advance their careers.
asked by mary 
comm/215
how can i revise this sentence to remove all fragment? There are two reasons why. I like baseball. It is fun. And for the good exercise.
asked by mary 
statistics
what are some benefits of manual calcualtions?
asked by dwayne 
Comm/215
Some interviewers ____ have a clear sense of what they want in an employee, ask very tough questions. __ who __, who __ which __ that , who is correct?
asked by David 
Comm/215
Q: The White Sox are really good at the fundamentals of baseball. Which is why they won the World Series in 2005. A: The White Sox are really good at the fundamentals of baseball; which is why they won the World Series in 2005. Is this correct?
asked by David 
Math
y=2x(lil2)+12x+1 we need to know yintercept, xintercept(s) and vertex
asked by Meech 
math
assignment for an art class is to complete 4 projects from a list of 6. how many ways can this be done if the order soes not matter?
asked by joe 
Comm/215
While I like bacon, it is not good for me. __ Sentence fragment __ Comma splice __ Runon sentence __ Complete sentence (contains no error)
asked by David 
Math
How can you determine if two lines are perpendicular?
asked by Diana 
math
how do you make 31/2 a whole number?
asked by april 
math
1500 dollars into a 6 month CD compounding daily with a 4% APR. How much do u have at the end of your six months?
asked by paul 
7th grade
graph each line: slope=1  ; yintercept at 3. 3
asked by Anonymous