Questions Asked on
August 15, 2011

Math
A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. What is the pressure difference? Use 1.28 kg/m^3 for the density of air. How much force is exerted on the roof? If the roof cannot withstand this much force, will it
asked by Catie 
Physics 1
(II) How close to the edge of the 20.0kg table shown in Fig. 9–47 can a 66.0kg person sit without tipping it over?
asked by Jerome 
chemistry
Explain the relation between muscles, ATP energy, and the calcium ion.
asked by meme 
Calc 2
Use a graphing utility to graph the polar equations and find the area of the given region. Common interior of r = 12 sin(2θ) and r = 6
asked by Em 
chemistry
a 100g sample of wate at 90oC is added to a 500g sample of water at 10oC. what is the final temperature of the water
asked by julius 
social study
What country is 45 degrees north and 105 degrees west cross
asked by michael 
Physics Help
0.30 mol of argon gas is admitted to an evacuated 50cm^3 container at 20 C. The gas then undergoes an isobaric heating to a temperature of 340C. What is the set up for this? I can plug in the values
asked by Lizzie 
accounting
1. Please refer to the worksheet below. Trial Balance Adjustments Adjusted Trial Balance Income Statement Balance Sheet Account Title Dr. Cr. Dr. Cr. Dr. Cr. Dr. Cr. Dr. Cr. Cash $1,700 $1,700 $1,700 Accounts receivable 8,500 $2,000 10,500 10,500 Supplies
asked by jimmy 
physics
A racecar accelerates along a straight track. It reaches 160 km/hr when it is 0.4 km from the start. It maintains the same speed until it is 1.6 km from the start. What is the displacement of the car during the time that it goes 160 km/hr?
asked by Anonymous 
PHYSICS
The latent heat of fusion of water is 3.34 x 105 J/kg. A farmer places a barrel containing 1000 kg of water in his barn one winter's night. When the water cools to 0oC, it begin to freeze. How much heat does the water give out while it is freezing until it
asked by Maggie 
physics
A persn carries a 218N suitcse up a stairs.the displcment is 4.20m vertically & 4.60m horizntally. A.hw much work does the person do on the suitcase B. If the prsn carries the same suitcse dwn.hw much work does he do
asked by Luc 
math
Determine the periodic deposit. round to the nearest dollar. how much of the financial goal comes from deposits and how much comes from interest. Periodic deposit %? at the end of each months Rate 8.25% compounded monthly Time 40 years Financial goal
asked by marie 
prealgebra
measuring your heart rate is one way to check the intensity of exercise. studies show that a person's maximum heart rate depends on his or her age. The expression 220a approximates a person's maximum heart rate in beats per minute, where a is the person's
asked by cortney 
physics
A student lifts a box that weighs 185N.The box is lifted0.8m.the stdnt drps the bx.hw much gravity do on the bow whn it falls0.8m.
asked by Luc 
trig
Solve the equation for cos thetatan theta=0 for greater than or egual to zero but less than 2pi. Write your answer as a multiple of pi, if possible form the following choices: pi , 5pi A.   4___ 4 B. pi 3pi 5pi 7pi  ' '' 4_____
asked by saad 
Math HELP!!!!!!
A pancake shop serves 3 kinds of pancakes,5 kinds of syrup,and 2 kinds of juice.How many different breakfast combinations are possible with one of each kind of item?
asked by MIKI 
stats.& Prob
Astudy shoed 53% of college applications were submitted online. Assume this result is based on sa simple random sample of 1000 applications with 530 submitted online. Use 0.01 sig.level to test claim that among all student applications the percentage
asked by sheila 
statistics
a. A statistics practitioner randomly sampled 100 observations from a population with a standard deviation of 5 and found that x is 10. Estimate the population mean with 90% confidence.
asked by Sally 
math
2. Simplify. Please be sure to show all of your work. 3(9) – 5 – 3 3. Simplify. Please show all of your work 9c^3+7c(3c^312+c) 4. Solve 4x 3(5x8) =239(x+2) . Please show all of your work 5. Solve the following equation for z. Please show all
asked by christine 
Marine Science
1.Which condition is believed to be caused by El Niño and effectively weakens hurricanes in the Atlantic ocean? *warm water temperatures *high wind shear *low wind shear *high pressure 2.We only see hurricanes in the summer months because *there is more
asked by maria 
accounting
Pearson began 20XX with 30,000 $1 common shares issued and outstanding. Paid in capital in excess of par was $25,000 and retained earnings were $75,000. Net income for 20XXwas $22,000. Requirements: Review Pearson's transactions for 20XX in the Excel
asked by Anonymous 
To: Nadia/Christine
Christine  changing screen names is not going to help you. Your last set of questions has been deleted. http://www.jiskha.com/display.cgi?id=1313430214
asked by Ms. Sue 
Physics
Body A has twice the mass and three times the specific heat of body B. They are supplied with equal amounts of heat. Body A experiences a temperature change ΔT. What change in temperature is experienced by body B? Question 2 options: A) ΔT B) 3ΔT/2 C)
asked by Skylar 
physics
A rope is usd to pull a box 15mt across the floor.the rpe is @an angle of 46dgree to the horizntal. A force of628N is dne by the rope to the box.hw much work does the rope do on the box
asked by Luc 
physics
A hill that has a 17.5% grade is one that rises 17.5 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such a hill inclined above the horizontal?
asked by Taylor 
MATH
The time (t, in seconds) for a freefalling object to fall d feet is described by the mathematical formula: t=d over the square root of 16 If a worker accidentally drops a hammer from a building and it hit the ground 4 seconds later, from what height was
asked by Wanda 
math
Simplify. Please be sure to show all of your work. 3(9) – 5 – 3
asked by christine 
Math
Solve z= 9/13c for c
asked by Hanna 
Making Data Graphs
In Example 2, find the percent of the total and the number of degrees in each sector for mountains, theme parks, relatives, and other. Find the median of the data set in Example 3. In which category does it fall? Find the average unemployment rate for
asked by maria 
trig
Solve the equation for cos(3theta/2).tan(3theta/2)for greater than or egual to zero but less than 2pi. Write your answer as a multiple of pi.
asked by saad 
math
Solve 4x 3(5x8)=239(x+2) . Please show all of your work
asked by christine 
Math
For a class test, the mean score was 65, the median score was 71 and sthe standard deviation of the scores was 7. The teacher decided to add 5 points to each score due to a grading error. Which of the folloiwng must be true for thenew scores? TH
asked by Gail 
Comp 155
List the steps to buying a home.
asked by Camille 
Advanced Algebra 2
the sides of the triangle are in ratio 2:4:5. If the perimiter of the triangle is 88 meters, determine the legnth of each side.
asked by Spencer 
chemistry
You have a 22 g sample of ethanol with a density of 0.7893 g/mL. What volume of ethanol do you have?
asked by patricia 
math
Determine the regular payment amount, rounded to the nearest dollar. The price of a home is $160,000. the bank requires a 15% down payment. The buyer is offered two mortgage options: 1 year fixed at 8% or 30year fixed at 8%. Calculate the amount of
asked by marie 
trig and cotagent
Evaluate cot(11pi/6) to the nearest hundredth (given in radians).
asked by saad 
Geometry
A concrete pad has dimensions 9 ft by 9 ft by 4 inches. How many cubic yards of concrete does it contain?
asked by Bart 
math
if 1000 articles of a given type can be returned out by a first machine in 8 hours, by a second in 5 hours, and by the third in 4 hours, how long will it take to turn out the articles with an machine working?
asked by jelaine 
math
if 1000 articles of a given type can be returned out by a first machine in 8 hours, by a second in 5 hours, and by the third in 4 hours, how long will it take to turn out the articles with an machine working?
asked by jelaine 
math
Fouryear college tuition. The average tuition at a public fouryear college was $3983 in 2001 and $5948 in 2005. Find the rate at which tuition was increasing.
asked by christine 
Mathematics
What are the differences and similarities between a regular pentagon and an irregular pentagon
asked by Robyn 
SMU
"P v Q" is best interpeted as
asked by joan turner 
Life Since the 1950s
Spread of Independence Between 1945 and 1962, many nations in Asia and Africa achieved freedom from Western influence. After WWII, many Jews returned to Israel, their Jewish homeland. Palestinian Arabs resisted this “invasion.” In 1947, the United
asked by maria 
english3
"The Wild, Wild West" assignment: Write a Cowboy song or poem.
asked by maria 
geometry
if bc = 2x3 and ac = 2x+10, find the length of ab
asked by bre 
Algebra 1:(
when writing an exponential number, it represents the number of times a base multiplies itself? Whats the vocab word for this..?
asked by Kristeena 
math 116
g(x)=8/29x
asked by tranika 
auto body
If you have a 5 inch grinding wheel with 5000 rpms and a piece off material lies off of it how fast is the material moving?
asked by heather 
physics
suppose you were able to blow air out of your mouth at one third of an atmosphere pressure. How tall a column of water could your mouth air pressure push up a straw? I know atm pressure is 1 atm but I'm really confused about how to go about this problem.
asked by Allie 
Maths
What is the difference between the value of the smallest digit and the value of the largest digit?
asked by Titus 
Calculus
sif xyz=0 (3x^2yz)^3 p=27x^7y^4z^6 then p=?
asked by Kelly 
Math 209
If C dollars are deposited in an account paying r percent annual interest, approximate the amount in the account after x years if C=$150, r= 1.9% and x=25 years
asked by Wanda 
statistics
a. A random sample of 25 was drawn from a normal distribution with a standard deviation of 5. The sample mean is 80. Determine the 95% confidence interval estimate of the population mean.
asked by Sally 
physics
A man pushs a cart wt a force of 36N directd@ an angle 25dgree belw the horizontal. The horizntal comp oe the force is 32.6N.The vrticl comp of force is 15.6N.Fnd work dne on the cart as the prsn moves50m
asked by Luc 
Comp 155
Based on the readings in Ch. 6, Section 2 of the text, identify key points to keep in mind when writing a topic sentence. How might these key points help you write effectively?
asked by Camille 
calculus
what is the derivative of y = (4x squared  5/2x+3)raise to 3/2 three halves..
asked by JM 
Physics
If a bullet is fired with the speed of 6.0x10² m/s horizontally from a height of 48 m, how long will it take to hit the ground? What is The range of projectile? Assume that there is no air resistance.
asked by Confuzzled 
math
Determine if(3/81 is a solution to 8x7y=10. Please show all of your work
asked by christine 
Algebra
Solve the following system using substitution: y = x + 2 y = 3x I don't understand this question.
asked by lizzie 
Chemistry
a freshmann is currently enjoying the arts studio program she is pursuing at a well know university. In her free time she likes to skate,take salsa dance lessons, and cook. She particularly enjoys and decides to pickle olives to the rescipe, she needs to
asked by ROCKY 
Accounting
Why do you think the Accumulated DepreciationEquipment has a zero on the trail balance section?
asked by eddie 
Math
Solve for a: a^1 + b^1 = 1
asked by Anna 
psychology
Bryan was edgy and seemed to lose his temper at the drop of a hat. His sister suggested that he would benefit by practicing an altered state of consciousness. He was surprised to hear his sister suggest that he should take drugs, but was soon corrected
asked by lachelle mitchell 
Chem 121
how do I calculate error analysis on my tritation expirement?
asked by John 
bio tec
what is a zygote
asked by Anonymous 
Phi103
"P v Q" is best interpreted as
asked by joan turner 
flvs
By now, you should be familiar with the causes and alliances of World War I and understand why the war began, who fought in the war, and the way the war was fought. Assignment: Are you the type of person who likes to write? Do you feel like writing helps
asked by maria 
Revolutionary War Letter
It is 1776. Write a three to five paragraph letter to your sister in England explaining your decision to participate in the rebellion against Britain. Be sure to list three reasons for your support of the rebellion against Britain and include any reasons
asked by maria 
math
Explain how to find the sum positive eight plus negative ten using game chips, then give the answer.
asked by chachis 
Personal Finance
Please post a 150300 word response to the following discussion question by selecting Reply: · What does it mean to have insurance? Choose two types of insurance (auto, home, health, disability, or life insurance) and identify one characteristic of each.
asked by Camille 
Physics
You have left your bicycle outside in the backyard for three hours on a very cold day. Now you decide to go for a ride. The metal handlebars feel colder than the plastic handgrips because: Question 4 options: A) The latent heat of fusion of the plastic is
asked by Skylar 
math
A researcher predicts that listening to music while solving math problems will make a particular brain area more active. To test this, a research participant has her brain scanned while listening to music and solving math problems, and the brain area of
asked by Donna 
Math
Describes a real world situation using words as label and using math symbols to relate the words.. Its a vocab work. And the school couldn't get me a text book today because my names not in the system. PLEASE help me:((
asked by Kristeena 
social studies
what state does the letters solidedahnr?
asked by gabby 
math
Explain how you could show five less than a number using an expression
asked by salvador 
math 116
g(x)=8/29x
asked by tranika 
math
simplify: X/(X1/2)
asked by Anonymous 
world history
According to the work of anthropologist Franz Boas, A. the concept of cultural relativism is wrong. B. some societies and peoples are more evolved than others. C. no race is superior to any other in brain power. D. people of different cultures think
asked by titus 
Math
find the domain: 1/(x^2+2x3)=square root of x
asked by Christie 
math
Hello, can someone please enlighten me? MSI means 1000 sq inches, right? I would like to convert this to feet, but I have no idea where to begin. Can you please show me the steps needed or even just show me an example? I was told by someone that 1MSI is
asked by mary 
social studies
Could you help me with examples of time, change, and continuity.
asked by madie 
math
a wheel makes 4 3/10 revolutions per minute. if it rotates for 95 minutes, how many revoltutions does it make?
asked by rick 
Math
Find the inverse of f(x) if f(x) equals (3X + 7)/(X2) THanks So much!
asked by Anonymous 
math
Simplify. Please show all of your work 9c^3+7c(3c^312+c)
asked by christine 
geometry
the figure below represents a building in the shape of a pentagon. using the scale 1 inch= 94 feet, what is the perimeter of the building?
asked by Hanna 
math
Solve. Please show all of your work. Find the length and width of a rectangular lot with a perimeter of 108 meters if the length is 8 meters more than the width.
asked by christine 
Math
coach byrd gives 7 lessons a day . how many days will it take him to give 100 lessons? please HELP!!!
asked by Alyssa 
psy230
A business researcher has to decide which of three employees should be placed in a particular job that requires a high level of perceptualmotor coordination. All three employees have taken tests of perceptualmotor coordination, but each took a different
asked by Asia 
business
A company has the following alternatives on some real estate that it needs for its new plant. It can lease the facility for $10,000 a month for 15 years, or it can buy the facility now for $800,000. The company’s weighted average cost of capital is 12%
asked by sam 
theology
if there is 4 of something and it is called: "Quadruple" What is the name given to 13 of something; like 4 babies are called: Quadruplets, what are 13 babies called?
asked by sandy 
bio
Evolutionary theory is based on several assumptions. What are these assumptions and are they valid?
asked by Anonymous 
math
Explain how to find the sum positive eight plus negative ten using game chips, then give the answer.
asked by drea 
american history Lexington and Concord Essay
Who was telling the truth? Which source was more believable? Is only one version true or could parts of each source be close to the truth? It is time for you to decide. You will write a persuasive essay explaining what you think really happened on April
asked by maria 
Math
Write an expression for the sum of 1 and twice a number n. If you let n be any odd number, will the result be an odd number?
asked by Melea 
math
find the interest rounded to the nearest dollar periodic deposit $60 at the end of each month Rate 5% compounded monthly Time 30 years
asked by marie 
Math
It is a fraction that compares two quantaties measured in different units. ex:.(miles per hour)
asked by Alana 
scientist
How do I turn up the sound on a stereo without turning the volume button up?
asked by Connor 
math
Give a number to the thousandths place that is greater than 7.2 but less than 7.3.
asked by john 
math
determine the inverse, f^1, of f when f(x)= 52x^3
asked by Christa 
math
Give a number to the thousandths place that is greater than 7.2 but less than 7.3.
asked by john 
UCP
Identify the accommodations that providers must make to assure effective learning in an ehealth environment.
asked by Taylor 
UCP
Outline how learning might be facilitated or hampered in an ehealth environment.
asked by Taylor 
algebra
Do I divide here? Factor 6c+60
asked by =) 
Trig
Find the polar coordinates of (8, –8) for r ≥ 0. I am getting 8 square root of 2 as the first coordinate. I am not sure if I am finding the arctan correctly.
asked by Dara 
business
A company has the following alternatives on some real estate that it needs for its new plant. It can lease the facility for $10,000 a month for 15 years, or it can buy the facility now for $800,000. The company’s weighted average cost of capital is 12%
asked by lyn 
Precalculus
The problem is Find the difference quotient and simplify your answer F(x)=5x  x^2, F(5+h)  F(5) over h ^2 this means power of two
asked by Omar 
economics
Suppose two competitors, Coa, Inc., and Han, Inc., are locked in a bitter pricing struggle in the aluminum industry. In the limit pricing payoff matrix, Coa can choose a given row of outcomes by offering a limit price ("up") or monopoly price ("down"). Han
asked by Anonymous 
calculus
what is the derivative of y = (4x squared  5/2x+3)raise to 3/2 three halves..
asked by JM 
math
Write a slopeintercept equation of the line whose graph is described Parallel to the graph of 3x + 2y = 5; yintercept (0, −1)
asked by christine 
math
Write the slopeintercept equation for the line with the given slope that contains the given point m = 3/4 ; (0, 5)
asked by christine 
maths
16 similar writing pads and 24 similar jotter books are stacked in a pile. their total thickness is 14.4cm.Each writing pad is 3x as thick as each jotter book. what is the thickness of the pile of jotter books? Please show me a nonalgebraic method of
asked by Joel 
Geometry
If there is a parallelogram which has four sides xy and x+25 ,4x+35 abc is parallelogram find x,y,z
asked by Anonymous 
economics 201
explain with a clear graph five factors that will change the supply of a product
asked by eco 
math
Simplify. Please show all of your work. 12* 1/4 +2/2^3
asked by christine 
physics
An empty plastic box of mass 9 kg is found to accelerate up at the rate of g/3 m/sec2 when placed deep inside water. Mass of the sand that should be put inside the box so that it may accelerate down at the rate of g/4 m/sec2 is
asked by usha 
Algebra
solev the compound inequality 2x9/86
asked by Tina 
social studies
The task of economic policy is to create a prosperous America. The unfinished task of prosperous Americans is to build a Great Society. Our accomplishments have been many; these tasks remain unfinished: > to achieve full employment without inflation; > to
asked by Anonymous 
algebra 1
what is the property name for this problem? h+0=h
asked by skylar moore 
consumer math
the lowest _ is the "best deal". (hint: it is an abbreviation)
asked by Anonymous