Questions Asked on
April 26, 2011

chemistry
what is the meaning of the numeral represented by X in the general formula for hydrate salt * XH2O
asked by Ivy 
Algebra
In chemistry, n molecules of an ideal gas have pressure (P), volume (V), and temperature (T) that stand in the following relation, where R is a constant. PV = nRT If you solve for n what would be a good equation? I came up with n=PV/RT Some other choices
asked by mary 
Chemistry
Barium sulfate forms as a precipitate in the following reaction: Ba(NO3)2 (aq) + Na2SO4 (aq) > BaSO4 (s) + 2NaNo3 (aq) When 35.0g of Ba(nO3)s is reacted with excess Na2SO4, 29.8g of BaSO4 is recovered by the chemist. a) Calculate the theoretical yield of
asked by Anonymous 
physics
Wayne pulls a 305 N sled along a snowy path using a rope that makes a 45.0° angle with the ground. Wayne pulls with a force of 42.3 N. The sled moves 16 m in 3.0 s. What power does Wayne produce?
asked by Merlin 
Speech
After analyzing a problem, what is the next step in the problemsolving process? a. Develop creative solutions. b. Identify possible solutions. c. Select a solution. d. Implement a solution. I think it might be B
asked by Courtney 
food economics
what are the 3 other names by which animal proteins are called?
asked by Danielle 
algebra
how long is the diagonal of a 12mmby16mm face of a rectangular prism?
asked by Anonymous 
Math
Three times as many children as adults attend a concert on Saturday. An adult's ticket cost $7 and a child's ticket cost $3. The theater collected a total of $6,000. How many people bought tickets?
asked by Carolina 
Literature (Vocabulary)
When the _1_ citizens of Reynoldsville finally realized that their fortycent bottles of miracle sap contained nothing more than licorice extract and whiskey, they formed a lynch mob and searched for the _2_ who had sold the fake elixir. Fortunately,
asked by Sally 
physical science
A painter uses a fixed pulley to raise a 1k can of paint a distance of 10 m,what is the ima??
asked by Liam 
physical science
A screwdriver with a 1cm shaft and a 4cm handle is used to tighten a screw, what is the ima?
asked by Liam 
pre calc
Lighthouse B is 8 miles west of lighthouse A. A boat leaves A and sails 5 miles. At this time, it is sighted from B. If the bearing of the boat from B is N63E, how far from B is the boat? The boat is either ___ miles or ____ miles from lighthouse B, to the
asked by lauri 
trig identities
cos94 degrees cos18 degrees+ sin94 degrees sin18 degrees. write the expression as the sine, cosine, or tangent of an angle.
asked by caitlyn 
writing
1. In the following sentence, identify the part of speech of the italicized word. Large fish swim swiftly in the sea. A. Verb B. Noun C. Adjective D. Adverb 2. In the following sentence, identify the part of speech of the italicized word. Large fish swim
asked by Anonymous 
Chemistry
Calculate the sodium ion concentration when 70 ml of 3.M sodium carbonate is added to 30 ml of 1.M sodium bicarbonate.
asked by jess 
English
Describe the confrontation between Ralph and Jack in Chapter 6 of Lord of the Flies.
asked by Jasmine 
physical science
A mover uses a ramp to push a stereo into the moving van. The ramp is 3 meters long and 1.5 meters high. What is the ima of this ramp?
asked by Liam 
chemistry
The reaction of MnO4 with oxalic acid (H2C2O4) in aciic solutiob, yielding Mn2+ and CO2 gas, is widely used to determine the concentration of permanganate solutions. (a) write a balanced equation for the reaction would it be MnO4 + H2C2O4 > Mn2C2O4 +
asked by lili 
Algebra
Pauline sells computers on commission. She spends 2 hours on selling a laptop and 1 hour on selling a desktop computer. She works no more than 40 hours per week and routinely sells at least 1 laptop and at least 4 desktops each week. To maximize her
asked by Jacob 
home economics
STATE AND EXPLAIN THE BRANCHES OF HOME ECONOMICS.
asked by justina 
physics
A uniform stick 1.5 m long with a total mass of 210 g is pivoted at its center. A 3.9{\rm g} bullet is shot through the stick midway between the pivot and one end The bullet approaches at 250 {\rm{ m}}/{\rm{s}} and leaves at 140 {\rm{ m}}/{\rm{s}}. With
asked by Anonymous 
algebra
A sound power level reading of 127 dB was taken near a construction site where chippers were being used. When all but one of the chippers stopped working, the sound power level reading was 120 dB. Estimate the number of chippers in operation when the
asked by Massiel 
Probability
Factories A and B produce computers. Factory A produces 2 times as many computers as factory B. The probability that an item produced by factory A is defective is 0.012 and the probability that an item produced by factory B is defective is 0.04. A computer
asked by Julie 
chemistry
If the average quarter weighs 5.67grams, how many atoms of nickel are in a quarter? ie; 91.67%mass/copper 8.33%mass/nickel I took 5.67x0.0833=.47g .47gNi/58.6934=801 atoms nickel? is this right?
asked by chemdumby 
science
If the temperature at sea level were 23C,what would the air temperature be at a height of 2 kilometers under average conditions?
asked by Jessica 
Math
From a 10inchby19inch piece of cardboard, 3inchsquare corners are cut out, as shown in the figure above, and the resulting flaps are folded up to form an open box. Find the surface area and volume of the open box
asked by Tory 
Algebra
An airplane flies 2368 miles round trip in 7 hours. The speed of the wind is 20 mph. Determine the airplanes speed in still air.
asked by Kim 
Applied Business Research and Statistics
Exercise Questions Chapters 13, 14, and 17 James A Hardeman Exercise 1340 A suburban hotel derives its gross income from its hotel and restaurant operations. The owners are interested in the relationship between the number of rooms occupied on a nightly
asked by James 
Algebra 2
If a 20 in. by 30 in. picture has a wooden frame "x" in. wide surrounding it, which equation can be used to find the total area of the picture and frame?
asked by Andrea 
Chemistry
How do I calculate the amount of heat needed to convert 96g of ice at 24 degrees celciua to water at 28 degrees celciua?
asked by Emma 
organic chem
(b) One of your illustrious colleagues continues his/her education and finally obtains employment with a renowned pharmaceutical company as an organic chemist. He or she is asked to synthesize pantothenic acid because the company wants to use it to prepare
asked by adam 
Chemistry
1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess
asked by David 
math
draw 2 rays that are not parallel to each other and never intersect.explain.
asked by esha 
Science (Asap)
Imagine you made a gallon pitcher of lemonade for your family picnic.You poured the lemonade into 12 paper cup until there wasn't a drop left.Is the volume of the lemonade in the pitcher and the lemonade in the 12 paper cups put together the same or
asked by Frances 
physical science
how much power is used when a weightlifter lifts a 1250n barbell 2 meters in 3 seconds.
asked by Liam 
Chemistry
I need to know the most polar bond in each molecule. HSCH2CH2OH / HC12F / HOCH2CH2NH2
asked by Chris 
Algebra
The formula for converting Celsius temperatures to Fahrenheit temperatures is F= 9/5C + 32 where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius. Which formula could be used to convert Fahrenheit temperatures to
asked by mary 
physics
the most common reasons for rear  end collisions are too short a following distance, speeding and failing brakes. car A of mass 1000 kg, stationary at a traffic light, is hit from behind by car B of mass 1200kg, travelling at 18m.s. immediately after the
asked by anonymous 
Instructional Materials: their preparation and use
Please help! If you want to project a microscope slide onto a screen, which machine would you use? A opaque projector B copy machine C bioscope D slide projector I think the answer is D I'm I right.
asked by Rosie 
teacher aide
I need help! What information is included in the instructional guide that accompanies most audiovisual materials? A How to operate the projection equipment to show the materials B How to duplicate the audiovisual materials C A summary of description of the
asked by Rosie 
Chemistry
1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess
asked by Marie 
Ochem
Diethyl ether is used as a solvent for the reaction of diethylamine with mtoluoyl chloride. Why is a solvent necessary for this reaction?
asked by anon 
organic chem
(b) One of your illustrious colleagues continues his/her education and finally obtains employment with a renowned pharmaceutical company as an organic chemist. He or she is asked to synthesize pantothenic acid because the company wants to use it to prepare
asked by adam 
Chemistry
1How would each of the following affect the accuracy of the calculated neutralizing power of antaid (too high, too low, no effect) explain a)The actacid tablet was not cut exactly in half before weighing b)The solution mixture of reacted antacid and excess
asked by Carl 
Distance
If you were in a spaceship flying directly toward the Moon, which of the following would change as you got closer and closer to it?
asked by Anonymous 
MATH
GRAPH THESE EQUATIONS TO FIND THE PAIR OF X AND Y VALUES THAT IS A SOLUTION TO BOTH EUATIONS Y=X1 Y=X+3
asked by SHANNA 
Teacher aide
I'm having trouble with this question. Why would you mount an overhead transparency in a cardboard frame? A to make copies of it B to color it C to add overlays D to project it onto a screen Can someone please help me.
asked by Bree 
science
A solution of HNO3 has a pH of 4.5, What is the molarity of HNo3?
asked by Ray 
College Algebra
A coin jar contains nickels, dimes and quarters. There are 46 coins in all. There are 11 more nickels than quarters. The value of the dimes is $1.00 less than the value of the quarters. How many coins of each type are in the jar?
asked by Nancy 
Chemistry
# Electron Pairs # Lone Pairs Electronic Geometry Molecular Geometry Lewis Structure Sketch of Shape I need to do the above things for SBr6 and BrCl5. If anybody can help that would be great!
asked by Jake 
Math
Eleven members of the team gave each other "high fives". If each player gave each teammate a high five, how many high fives would be given altogether?
asked by Rusty 
Finance
Temple Corp. is considering a new project \vhose data are shown below. 'rhe equipment that would be used has a 3year tax life, would be depreciated by the straightline method over its 3year life, and would have a zero salvage value. No new working
asked by Anonymous 
The America Vision History, Glencoe Edition
I WAS WONDERING IF SOMEONE CAN TELL ME WHERE I CAN READ AND OR REVIEW A HICHSCHOOL STUDENTS HISTORY BOOK, THE FULL TEXTBOOK ONLINE FOR FREE. THE BOOK THAT I AM TRYING TO FIND TO READ ONLINE IS: The American Vision History Book, Glencoe Edition is what it
asked by JULIANNA 
Chemistry
How do I calculate the amount of heat needed to convert 96g of ice at 24 degrees celciua to water at 28 degrees celciua?
asked by Emma 
human life
What are the human and environmental factors that cause illhealth,sickness,trauma,accidents,crises and disasters in South Africa
asked by Anonymous 
math (pre calc)
4cot^2x4/tanx+cosxsecx write expression in factored form as an algebraic expression of a singletrig function
asked by josh 
Math
Using the arrangement of letters in the margin, compute the number of paths that spell the word MATHEMATICS if all paths must start at the top and move diagonally down through the letters. M A A T T T H H H H E E E M M M M A A A T T I I I C C S I only got
asked by Jay 
Chemistry
Calculate the amount of sodium acetate trihydrate needed to prepare 100 mL of 0.2M sodium acetate solution.
asked by Georgia 
math
4cot^2x4/tanx+cosxsecx factorin algenraic single trig function
asked by josh 
Physics 203
A satellite with a mass of 310 kg moves in a circular orbit 7.00*10^7 m above the Earth's surface. (a) What is the gravitational force on the satellite? (b) What is the speed of the satellite? (c) What is the period of the satellite?
asked by Kayla 
Physics 203
An object is projected upward from the surface of the Earth with an initial speed of 4.6 km/s. Find the maximum height it reaches.
asked by Kayla 
calculus
The function f is twice differentiable, and the graph of f has no points of inflection. If f(6)+3, f'(6)=1/2, and f"(6)=2, which of th following could be the value of f(7). A.)2 B.)2.5 C.)2.9 D.)3 E.)4 the answer is A. but what are the steps to reach
asked by Confused 
Chemistry
How do I calculate the amount of heat needed to convert 96g of ice at 24 degrees celciua to water at 28 degrees celciua?
asked by Emma 
10th grade chemistry
How many grams of CuSO4.5H2O are needed to prepare 100. mL of a 0.to M
asked by Angelica Martinez 
trig
The lengths of 2 adjacent sides of a parallelogram are 42 cm and 36cm. an angle of the parallelogram is 4o degrees. Find the measure of the longest diagonal to the nearest tenth of a centimeter.
asked by ashley  
Grade 11 Math
A rectangular dog run is to be enclosed by a fence and then divided into two smaller rectangular areas by a fence parallel to one of the sides. If 54m of fence is available, find the dimensions of the dog run of greatest possible area. State the total area
asked by Stacy 
Physics
A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 13m/s when the hand is 2.3m above the ground, how long does it stay in the air?
asked by Mike 
Maths
The first year after 1999 which is the product of three consecutive integers is: 2004 2040 2046 2052 2184 Please show working out and choose either one of these years
asked by Babiinoob 
Business Math
Ron Prentice bought goods from Shelly Katz. On May 20, Shelly gave Ron a time extension on his bill by accepting a $5,000, 7.00%, 150day note. On August 26, Shelly discounted the note at Roseville Bank at 8.00%. What proceeds does Shelly Katz receive?
asked by Nina 
Statistics
A survey claims that 9 out of 10 doctors recommend Aspirin for their patients who have children. To test this claim against an alternative that the actual proportion of doctors who would do this is less than the claimed, a random sample of 100 doctors was
asked by lauren 
physical science
Trying to find the power to this ?. A weightlifter lifts a 1250n barbell 2meters in 3seconds. How much power was used to lift the barbell? Do you have to find the work first??
asked by Liam 
Math
Construct a stem and leaf plot with the following data landmarks there should be at least 12 data entries in your plot median: 57 minimum: 42 maximum: 78 mode: 60
asked by Bell 
Teacher
I just want to make sure I have this question correct. If you want to check out free audiovisual materials, where would you go? A video store B art supply store C teacher supply store D county instructional materials center I think D, can someone tell me
asked by Bree 
Physics
Some Carnot engine has an efficiency 0.700. The hot reservoir temperature is 900K. This means that the temperature of the cold reservoir is 270K. If the cold reservoir is dropped to 260K, the new efficiency is 0.701. If the output of the power is kept
asked by Daniel 
calculus
The sides and diagonal of the rectangle above are strictly increasing with time. At the instant when x=4 and y=3, dx/dt=dz/dt and dy/dt=k(dz/dt). What is the value of k at that instant. solved for z with pythagorean theorem and stuck at that step. z=5
asked by Confused 
Maths
Prove sqrt(Sec^2 A+Cosec^2 A)=TanA+CotA
asked by Vijaya 
organic chem
Suggest a synthesis for olivetol from benzene and any necessary organic and/or inorganic reagents.
asked by lauder 
Orgo
1. Calculate the number of moles of cyclohexanol used in the following reaction: 10.5 mL of cyclohexanol and 9mL of H2SO4 react to form cyclohexene
asked by Nicole 
Teacher aide
Which of the following equipment would you use to show a filmstrip to an entire class? A filmstrip viewer B filmstrip projector C videocassette recorder D movie projector Just want to know if I have it right. Is it B
asked by Karrie 
physical Science
Explain why a ceramic bowl will keep oatmeal hot longer than a stainless steel bowl?
asked by Tyler 
chem
make 300.0 mL of a pH 5.30 buffer from 0.500 M acetic acid and 0.500 M sodium acetate. Calculate the volume of 0.500 M acetic acid and the volume of 0.500 M sodium acetate required to make 300.0 mL of a buffer solution with pH = 5.30. (The Ka for acetic
asked by mie 
chem
an average airbag contains 132 g of NaN3. How many liters of nitrogen would produce on a warm day at 85 degrees F and a pressure of 1atm?
asked by tracy 
history
How much changed in the norman conquest
asked by vickky 
Chemistry
Please help. Calculate the pH at the following points during the titration of 100.0 mL of 0.20 M acetic acid (Ka for acetic acid = 1.8 x 105) with 0.10M sodium hydroxide 1. before addition of any base 2. after addition of 30.0mL of base 3. after addition
asked by Kendall 
Business Math 2
Megan Green is interested in taking out a personal loan for $1,550. However, last year an identity theft scam left her with poor credit. Since then she has learned about the perils of identity theft from personal experience as well as from a variety of
asked by Nina 
science
improper functining or regulation of which of the following might lead to poor regulation of membrane permeability? 1.albumin 2.fibrinogen 3.platelets 4.lymphocytes 5.chloride ion levels
asked by Anonymous 
Anatomy
A number of antibiotics act by binding to certain essential enzymes in the target bacteria. How might these antibiotics influence the chemical reaction controlled by the enzyme? What might be the effect on the bacteria? On the person taking the antibiotic
asked by Chantelle 
physical chemistry
find the ph of the solution that results from the addition of 25ml of 0.1mol/l NaOH solution to 50ml of 0.1mol/l HCL solution?
asked by noel 
Geometry
The ratio of the volume of cube A to the volume of cube B is 64 to 27. Use this information to determine the ratio of the length of a side of Cube A to the length of a side of cube B.
asked by Nicole G. 
Trig
a clock has a diameter of 1 foot what is the angular size if viewed from a distance of 27 feet
asked by Michael 
teacher
Which machine would you use to protct a graphic display? A spiral binder b pantograph C laminator D drymount press I would say C, but I also like d too. Can someone help me.
asked by Billy 
MATH
TWO NUMBER CUBES AREROLLED AT THE SAME TIME . WHAT IS THE PROBABILITY THTA BOTH NUMBER CUBES WILL SHOW AN EVEN NUMBER
asked by SHANNA 
Algebra
Use GaussJordan to solve 3x + 2y = 4 4x – 2y = 10
asked by bob 
Statistics
Suppose the mean income of 35yearolds in the U.S. is $25,000. A random sample of 150 35yearolds in California results in a sample mean income of $26,600 and a sample standard deviation of $3800. At the 5% significance level, can we conclude that the
asked by Erinn 
math
Samantha type 4,200 words in 2 hours. Determines how many words per minute ?
asked by Dejanai 
physics ( help FAST)
Which could potentially cause you the greater injury: being tackled by a lightweight, fast moving rugby league player or being tackled by a player with double the mass but moving at half the speed? Explain your answer
asked by H.T 
Algebra
An object which is dropped from 100 feet above ground falls according to the formula s = 16t^2 + 100, where s is the distance from ground level at time t. Which equation is equivalent to this formula? S100 = t^2  16 S100 = t^2  16 s  100
asked by mary 
history
How much changed in the norman conquest
asked by vickky 
child care
The first disorder unique to children and adolescents was? a.!@#$%^&ory insanity b.mental retardation c.moral insanity d.depression i thought b but i wasn't sure please help
asked by Alisha 
Algebra
The sum of two numbers is 68 and the difference is 10. What are the numbers?
asked by Kendra 
Math
Could someone answer this so I understand it. Thanks The projected rate of increase in enrollment at a new college is estemated by dE/dt = 9000(t+1)^3/2 where E(t) is the projected enrollment in t years. If the enrollment is 5000 now (t=0), find the
asked by Jules 
Sociology
Can someone help me with my three questions and let me know if I answered them correctly Thanks 1 According to world systems analysis, the U.S., Japan, and Germany are all core nations. I chose (true)=A A) True B) False 2) Which population group represents
asked by Sharon 
Spanish
15. "¿Qué debemos hacer para ayudar el medio ambiente?" "Creo que ______ protegerlo." a. vale la pena b. tenemos c. vamos d. forma parte Not sure.. 16. Gregorio _____ tocar la guitarra. La toca muy bien. a. sabemos b. sé c. saben d. sabe C or D 18.
asked by mysterychicken 
teacher aide
Need help! If you're preparing a bulletin board, how many ideas should you try to get across at one time? A One B Two C Four D As many as possible I think A one, but I can't seem to find it anywhere. Can someone plz help.
asked by kristy 
algebra
A rectangle with sides 8 cm and 6 cm and one with sides 10 cm and 9 cm. Find the ratio of the perimeter and the areas of each pair of figures.
asked by kennedy 
Math
Use the product rule to find the derivative of (2x^2 + 3)(3x + 5).
asked by Ethan 
Math
Use algebra and the properties of limits as needed to find the limit. If the limit does not exist, say so. (→ − ∞)lim: 9x^2+5x17 / 5x^3+12x^2+21
asked by Brian 
ah trig help
use an apropriate sum or difference indentity to prove the doubleangle identity cos2u=12sin2u
asked by amber 
math
when adding and subtracting integers does 2 negatives equal a positive? And does 1 positive plus 1 negative number equal a negative?
asked by cassandra 
Math
An indoor track is shaped like a rectangle with a semicircle on each end. The distance around the track is 200 yards. Find the maximum area enclosed by the track.
asked by Tj 
geometry
Which of the following does not always bisect at least one side?
asked by Schurz high school 
Physics
A 10kg ladder 2.5m long rests agaist a frictionless wall with its base on the floor 80cm from the wall. How much force does the top of the ladder exert on the wall?
asked by Steph 
physics
An engine moves a boat through the water at a constant speed of 16 m/s. The engine must exert a force of 7.0 103 N to balance the force that water exerts against the hull. What power does the engine develop? answer:___ kW
asked by Merlin 
Economics
Explain two ways the Office of Fair Trading can protect the interests of consumers?
asked by Anique 
chemistry
the normal concentration of sodium chloride in blood is 0.9%(w/v). therefore assuming a FW for NaCl of 58.4 g/mole, an isotonic 0.9% (w/v) saline solution would have how many miliequivilents per liter (mEq/L) of Na+ ions?
asked by jackie2 
Chem
How much heat will be produced when 16grams of C2H6 burns? The reaction is 2 C2H6 + 7 O2 > 4CO2 + 6 H20 triangle heat = 350kJ
asked by Laura 
Math
What are the following numbers rounded to the nearest thousandth: 0.00673, 63.4982, 4.8919, 5.9198.
asked by Francis 
chemistry
I is converted into I2 by the addition of an aqueous solution of KMnO4 to an aqueous solution of KI. What is the oxidation number assigned to I2??
asked by Kayla 
chemistry
calculate the percent composition of the compound that forms when 222.6 g nitrogen combines completely with 77.4g oxygen.
asked by mike 
stats
salary study conducted. mean for men = $42,000. Std deviation = $9,000. mean for women = $39,000. Std dev for women = 8,000. If 100 men surveyed, at a CI of 95% what is the the most number of women surveyed if there was no Statistical difference in the
asked by Julia 
trig
Each child in a family of 3 children is going to get a pet. One wants a dog or cat, another wants a bird or rabbit, and the third wants a frog or snake. List a sample space or draw a tree diagram and determine the number of possible outcomes.
asked by ashley  
chemistry
A sound power level reading of 127 dB was taken near a construction site where chippers were being used. When all but one of the chippers stopped working, the sound power level reading was 120 dB. Estimate the number of chippers in operation when the
asked by Massiel 
GEN CHEM
make 200.0 mL of a pH 5.00 buffer from 0.200 M acetic acid and 0.100 M sodium acetate. Calculate the volume of 0.200 M acetic acid and the volume of 0.100 M sodium acetate required to make 200.0 mL of a buffer solution with pH = 5.00. The Ka for acetic
asked by GEN CHEM 
chem
make 300.0 mL of a pH 5.30 buffer from 0.500 M acetic acid and 0.500 M sodium acetate. Calculate the volume of 0.500 M acetic acid and the volume of 0.500 M sodium acetate required to make 300.0 mL of a buffer solution with pH = 5.30. (The Ka for acetic
asked by Journey 
physics
An 850 N sled is pulled a distance of 180 m. The task requires 1.20 104 J of work and is done by pulling on a rope with a force of 125 N. At what angle is the rope held? answer: ____ ° (with the horizontal)
asked by Merlin 
Math (Reiny??)
Mrs. Reiny ... As in Harris County Mrs. Reiny?
asked by sa 
LIfe orientation
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community.Provide relevant sources to support your claims.
asked by Emanuel 
English/Geography HELP PLZ
Hey! Is Waltzing matilda iconic to australia? Does it negatively or positively reflect australia? I think maybe badly because of the rebellion in it but I need evidence supporting this. so far I know that it was sung in the cronulla riots but that's about
asked by Harriet 
computer science
to write a report on ObjectOriented Systems. The report should focus on the following systems including definition, applications, and advantages and disadvantages. • Objectoriented Systems • Objectoriented database • Objectoriented data modeling
asked by pete 
physics
1.using equations What would happen if the knob were placed in the center of the door? What would happen if the knob were placed right next to the hinges?
asked by maria 
Chemistry
A 5267ml sample of h2 is collected at 772 mmhg and 21C. What would the volume be if it is cooled to oC and 1 atm?
asked by Terrie 
philosophy
What is the distinction between deductive and inductive argument and give examples of each.
asked by lang 
algabra
find the LCM of y^264 and y^2+15y+56
asked by Sam 
Math
Three times as many children as adults attend a concert on Saturday. An adult's ticket cost $7 and a child's ticket cost $3. The theater collected a total of $6,000. How many people bought tickets?
asked by Carolina 
Math
How do you write this as an algebraic inequality ? "Three times a number decreased by seventeen is less than or equal to eight."
asked by Elda 
arithmetic
Four friends decide to buy a bag of 56 gold coins..Each person contribute the following Sue $320 John $300 Mike $220 Betty$ 160 Please determine the apportionment using a.Hamilton method b.Jefferson method C.Webster method
asked by MIKE. 
math
if anna drew a circle that has an area of 153.86 square meters what is the radius of anna's circle
asked by jack 
Physics
an object that is 6 cm in height is put 9 cm from a convex lens. The lens has a focal length of 8 cm. What is the size of the image?
asked by Jack 
statistics
In prior investigations made by a local Gas and Electric Company, 65% of homeowners prefer to heat with gas instead of electricity. In a recent study of 200 homeowners 60% prefer heating with gas. In a two tailed test at a .05 level of significance can we
asked by Nikki 
pre calc
cos2x=cosx in interval of [0,2pie]
asked by caitlyn 
Statistics
According to the U.S. Federal Highway Administration, the mean distance traveled per shopping trip by Americans was 10.0 miles in 1983. A random sample of 25 shopping trips for this year gave a mean distance traveled of 12.0 miles with a population sample
asked by Anonymous 
Physics
Calculate the length of a meter stick moving with a speed of v = 0.9995c as measured by an observer at rest.
asked by James 
social studies
why they are grouped in one community?write at least threereasons. (1)christine. (2)hindu.(3)muslims.(4)sick.
asked by abdul moiz 
Math(just check it please easy)
A salesperson makes a flat fee of $20 per day plus $8 per hour. Which equation or inequality can be used to find h, the number of hours the salesperson will have to work to make more than $60 for a day's work? F: 20h + 8 = 60 G: 8h + 20 < 60 H: 8h + 20 =
asked by Naresh Jafar 
english
Can someone give me some example on indefinite pronouns. Like in sentences!! thanks!!!
asked by McKenna 
identities trig?
find all solutions to the equation in the interval [0,2pie] cos2x=cosx
asked by emily 
precalc
How do you solve log5 sqrt125?
asked by Ashley 
physics
The energy of the electron in the 2s state is 12.98 eV, the energy in the 3s state 10.84 eV. What is the wavelength of the absorbed photon?
asked by Tisha 
10th grade Chemistry
To what volume should 5.o g of kcl be diluted in order to prepare a o.25 m solution
asked by Angelica Martinez 
literary
give examples literary and non literary prose by citing examples from any source .
asked by Anonymous 
physics
In the figure , suppose C_1 = C_2 = C_3 = 18.0 \mu F.If the charge on C_2 is Q_2 = 33.0 \mu C, determine the charge on each of the other capacitors.
asked by c 
music
The form of the melody called the bar form is represented by A)AAB B)ABB C)ABA D)ABBA
asked by Stephanie 
s.s (social studies)
IS THIS RIGHT ? There comes a time in history,when the Americans must break away from england and become a separate nation , equal with other nations like god planned all along.We care about what the rest of the world thinks,therefore we will clarify why
asked by molly 
ELA (CHECK)
Jose Envisioned a center with music classes. What does envisioned mean? A. watched a show about B. Saw in his mind C. Will see in his mind D. Became part of a vision The answer is C is it correct
asked by KIM 
science
how do you make 5Pentyl1,3benzenediol from just benzene? 1.Benzene + Br2 +FeBr3>BenzeneBr??
asked by Sandy 
math
what would be the length of a shadow cast by a 50 foot high building?
asked by ben 
math
factoring to solve quadratic equation 5x^2=16x+45
asked by lori 
Chemistry
How do you calculate the heat fusion of ice? I have the initial and final temperatures and volume of the water.
asked by Becky 
algebra
Your company would like to know how sales levels affect profits. If too few items are sold, then there is a loss. Even if too many items are sold, however, the company can lose money (likely because of low pricing). It is good to know how many items can be
asked by Joe 
English
I need the synonyms and antonyms to all the tenth grade SAT vocabulary list!!
asked by Lisa 
physics
A 187 W motor will lift a load at the rate (speed) of 6.58 cm/s. How great a load can the motor lift at this rate?
asked by Merlin 
trig identies 5.3 &5.4
use a sum or difference identity to find an exact value pie/12
asked by alex 
social studies class 2
why muslims are grouped in one community? write at least three resons.
asked by abdul moiz 
Physics
A 166 g mass is attached to a horizontally mounted spring. It is pulled out to stretch the spring and then released. You determine the period of the oscilliation to be 1.0 seconds. What is the acceleration of the mass (magnitude) when the spring is
asked by Paige 
Algebra
Is the point (3,2) a solution of the intersection of the following set of quadratic equations: Y < X ^ 2X^2 + Y^2< 16
asked by Christina 
HCS/457  PUBLIC AND COMMUNITY HEALTH
Why is it important to consider the components of the social ecology framework in community and public health?
asked by Linda 
Science
The chemical eqaution H squared + Cl squared > 2 HCl represents which type of reaction? Thanks, if you can get it):
asked by Holly 
physics
1.What if Newton’s Third Law did not exist?. In your response to this inquiry, think of some of the consequences if Newton’s Third Law were not true. Describe in detail at least two consequences that would result if the Third Law were not true.
asked by maria 
Chemistry
How can i determine the molar mass of acetylene and its molecular formula if i only know its density at stp and its empirical formula
asked by Traci 
chemistry
how many grams of BaO are in 1L of a 2.0 aqueous BaO solution (MW BaO = 153.3g/mole)?
asked by jackie1 
Chemistry
You have a reaction using the following criteria: 1.3456 g of barium chloride solution (0.786M) is mixed with 1.20089 g of sodium sulfate solution (1.3M). The ambient pressure is 754.564 mmHg and the temperature is 56.889 degrees celsius. Determine the
asked by Katie 
Chemistry
How many grams of copper are produced when excess aluminum reacts with 11.6g of copper oxide?
asked by Melissa 
Chem
Balancing equations? NaOH + H3PO4 > Na3PO4 + H2O C3H8 + O2 > CO2 + H2O
asked by Laura 
Geometry
How do solve the equations algebraically? x^2 + y^2 = 25 3y  4x = 0
asked by Camile 
Algebra
The picture has an arrow on it with the back of the arrow on the 3 and 4 In which quadrant(s) could a point be located if its coordinates are reciprocals of each other?
asked by Regina 
trig.
Find the degree measures of 2 angles, one positive and one negative that are coterminal with 135.
asked by ashley  
Algebra
9. Find the value of y if the points (–7, y) and (4, –3) are √30 units apart. (1 point) Thank you :D!
asked by personthatreallyneedshelp! 
college albegra
Brandon has 3 inventions, one saves 30 percent on fuel; a second saves 45% a third saves 25%. If he uses all three inventions at once, what percent can he save on fuel? do I add all of the percentages together and divide by 3? =1/3 or 3%? or is it 100%?
asked by algebrajunkie 
college algebra
Amy sets up a game in which she puts four $10bills and one $20 bill in one box. Blindly grabs one of the bills and keeps it. To break even on average, how much must she charge the player to play? is it just 602o=40....so she would need to charge the
asked by algebrajunkie 
ELA (CHECK)2
I think that there are eight of these variations what does the word variations mean? A. several things B. Thinks thAT constantly change C. A place that people visit to relax D. A serious of different paintings on the same theme I think the answer is d is
asked by KIM 
system of equations
solve using any method and identify the system as consistent, inconsistent or dependent. 3x4y=8 6x2y=10 I want to use elimination. this is taking me forever!
asked by Nancy 
Math
A plate glass window measures 5 ft by 7 ft. If glass costs $7 per square foot, how much will it cost to replace the window.
asked by Tenesha 
Math
How would i change x4y= 20 to slope intercept form?
asked by Jameson 
math
factory completely 21y^2+38+5
asked by lori 
probability
a bag of 100 marbles contains 30 blue, 25 green, 25 mixed,and 20 clear. what is the probality of selecting a blue? ablue and green? a marble that is not clear? ablue on the first draw and a clearon the second draw? a
asked by ryee 
Physics
usergenerated content: report abuse What approximate change in decibels does an observer experience from a sound source if the observer moves to a new location that is 67% as far from the source? My answer choices are 23, 23, 40, 2.76, 2.76, 1.94,
asked by Michelle 
physics
In the figure , the total resistance is 13.0 k \Omega, and the battery's emf is 32.0 V. If the time constant is measured to be 40.0 \mu s. Calculate the total capacitance of the circuit.
asked by Anonymous 
physics
A laundry detergent contains a threelevel quantum system ("whitener") which absorbs ultraviolet light at 273 nm. It emits light at 597 nm as part of a twostep process . What is the wavelength of the second emission process?
asked by Lorlyna 
math
factor completely 7y^2+22y+3
asked by lori 
math
how do I determine the compounding rate required to turn $350 into $14,000 over 30 years? Thank you
asked by Tom 
social studies class 2
why hindu are grouped in one community?write at least three resons.
asked by abdul moiz 
Math
solve the equations algebraically x^2 + y^2 = 25 3y  4x = 0
asked by Camile 
History
Is it okay to end an essay with a rhetorical question?
asked by Ruth 
MATh
Number of Cans of Corn Cost 3 $1.95 5 $ 3.25 6 $3.90 9 $5.85 Write an equation to represent the data how do i do that
asked by Robby 
Psychology
Survey results may be inaccurate due to: a participants not wanting to tell the truth b the bias of respondents c the use of a represntative sample d failure of most statistical procedures in analyzing the results of surveys. This really has me stumped as
asked by Nicci 
arithmetic
Write a rule for the nth term of the arithmatic sequence. Then find a10. 1. 4,2,8,14,20 2. 25,29,30,37,41
asked by Dariean 
math
how to convert cm3 to liters?
asked by lucy 
child care
windows of time during which enviorment influences on development are enhanced are called blank periods? a.sensitive b. critical c. crucial d. necessary i say c?
asked by kellie 
Social Studies(child Labor)
what is the right spelling for child labor did i spell child labor right or it is child labour i think the right spelling is child labor in google i saw a spelling like child labour
asked by josan 
science
when would we use parsec, astronomical unit or light year? how would you determine which is the best to use?
asked by yuku 
Physics
Glass of water has mass of 240g at room temp (25°C). Add 50g of 0°C ice. What final temp after ice is melted. (at equilibrium).
asked by Sue 
physics
An atom absorbs a yellow photon in the transition from its 2s to its 3s state (see figure on the left, not drawn to scale). What color photon might it emit in a transition from the 3s to the 2p state?
asked by nadya 
Algebra
Equation S=16t^2 +100 write equation t^2 =
asked by mary 
Math
Women’s records in the women’s 1500m run. The formula R =−0.0026? + 4.0807 can be used to predict the world record, in minutes, for the 1500m run t years after 1900. Determine (in terms of an inequality) those years for which the world record will
asked by Happy 
chemistry
how many ml of a 2M solution of HCl would be needed to neutrilize 2ml of a 5M solution of KOH?
asked by jackie3 
Persuasive Writing
Hello! I was wondering if you had any ideas for a persuasive writing assignment. Thanks! All help is adored! :D Thanks! From: Natila' Scharum
asked by Natila' 
statistics
Compare Distribution A (Female Shoulder Girth) and Distribution B (Male Shoulder Girth) shown below. What can we conclude about these distributions based on the histograms?
asked by amy 
MATH
If someone told you the depth in Lake superior was 1,333ft, would it be expressed as mean, median, mode, or range
asked by bravefiregirl 
Math
Could someone answer this question so I understand it. Thanks Find the indefinite integral. x/ã3x^2+4 dx = Simplify the answer. Use C as the arbitrary constant.
asked by Jules 
math
name a multiplication fact that can help you with 8x4, and tell how
asked by Anonymous 
s.s (social studies)
can you help me translate the declaration of independence? first passage: When in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the
asked by molly 
Algebra
find the LCM of 6y^6and 12y^8
asked by John 
chem
Suggest a synthesis for olivetol from benzene and any necessary organic and/or inorganic reagents.
asked by mie 
algebra
How do I solve 6x12>18 Thanks in advance for the help.
asked by Nyk 
trig
finding the period of a graph given a equation y=5sin1/3(xpi/2)
asked by ashley  
geometry
In a Kite the sides are x,5,2 and 3 what is the value of x?
asked by Meli 
religion
Hello, I am having trouble locating online Kohlbergs theory and spiritual formation with moral reasoning thanks
asked by kara 
math
Joe has a total of 100 dimes and quarters. If the total value of the coins is $14.05, how many quarters does she have?
asked by Fred 
Math
Math.. find limit help? Find the given limit. (x→ 1)lim: (square root x1) + 1
asked by Jacob 
clinical chemisty
why is lupus inhibitors important
asked by yr 
World Lit.
what disobedience techniques did gandhi use to gain independence in india?
asked by ricki 
math
A train traveled 1,176 mi in 21 h. What was the speed of the train Speed is the distance traveled divided by the time.
asked by Carla 
math
which of the numbers are integers? 11/3,9.7,163,3/8,1
asked by sammy 
Math
Use algebra and the properties of limits as needed to find the limit. If the limit does not exist, say so. (X→∞)lim : 44x^212x+82/11x^2  35x  37
asked by West P. 
math
Evaluate a) 5993 b) 45 +33
asked by Bee 
math
a) Identify the base in the following statement b) Solve for the amount. What is 81% of 285
asked by homer 
Math
1/5(2x+10)=2x8
asked by cassy 
Science
5 Grade class with 20 students collected snacksurvey data.The class made the circle graph. Cookies:5,Granola Bar:4,Candy Bar:7 Fruit:3,Other:1
asked by Frances 
algebra
4X+8/X+1 * 2X/3X15 / x^24/2x^28x10
asked by Gia 8] 
math
How long does it take to travel 84.2km at 80 kph
asked by Anonymous 
social studies class 2
why chiristan grouped in one community ?write at least three resons.
asked by abdul moiz 
organic chem
Suggest a synthesis of 2,4,6trinitrofluorobenzene from benzene
asked by lauder 
pre cal
how do you work out cot squared feta  CSC squared feta?
asked by sam 
organic chem
Suggest the syntheses of cadaverine from 1,5Dibormopentane
asked by lauder 
stoichimetry
how many liters of NH3 can be produced from 23.1 grams of H2 ?
asked by Anonymous 
Chemistry
calculate the amount of heat generated when 50g of water is condensed at 100 degrees celsius
asked by Andy 
algebra
what is the radical and x=5 on the inside of the radical?
asked by irene 
algebra
SOLVE A=bh for b I came up with b= A/h Am I correct?
asked by mary 
english
can someone help me withindefinite pronouns!!!!!!! like with sentences with the uses too like adj noun do io op subject????
asked by McKenna 
Psychology
Survey results may be inaccurate due to: a participants not wanting to tell the truth b the bias of respondents c the use of a represntative sample d failure of most statistical procedures in analyzing the results of surveys. This really has me stumped as
asked by Nicci 
science
who rubbing two different pieces of cotton together give each piece of cotton a +ve or ve charge
asked by katlin 
math
How to convert cm3 to liters?
asked by lucy 
MATH(please check only)
Number of Cans of Corn Cost 3 $1.95 5 $ 3.25 6 $3.90 9 $5.85 Write an equation to represent the data how do i do that I think the answer is 0.65n = c
asked by Robby 
Math
Naomi studied each of the letters below with a flat mirror. abcdefghijklmnopqrstuvwxyz she then constructed this chart characteristic 1 charac 2 char 1&2 bcdehiox hiox what letters go in the second column
asked by Carol 
Calculus
find the integral of (1+3t^5)^20*t^4dt
asked by brian 
maths
a melon costs 5.45 for 3.2kg how much would 6.5kgs cost?
asked by nicole 
Chemistry
What is the correct way to write a chiral system or R and S system?
asked by Chris 
Geometry (math)
The center of two pulleys are 27cm apart. One has the raddius of 13cm and the other has a radius of 5 cm.. Find the length of the blet that surrounds the two pulleys rounded to 2 decimal places.
asked by Fominia 
social studies
Ways to be safe in class
asked by ahmed 
math
write a mixed number for 106
asked by Anonymous 
Social Studies(Thesis)
I read all about thesis and i made my thesis about child labor At what age is it appropriate for a child to have a job and a child should have a right to freedom. That is my thesis is it correct yes or no THANKS
asked by macy 
trig
how do i solve this completing the square problem: 3x^2+12x+10=0
asked by Anonymous 
algebra 2 and trig (math)
Find the value of x in the interval 0 is less than or equal to x and 360 is greater than or equal to x which satisfies the equation cos x  2 cos x sin x.
asked by joe 
math
Thanks for the answer Reiny, could you explain the way you solved the factor of 21y^2+38+5
asked by lori 
Women Studies
explain how cultural assumptions influenced the findings the supposed innate biological facts of gender and intelligencein the "Science" that Gould discusses.
asked by Aaron Larsen 
Math
How do you put 7x= 3y12 in y=mx+b form?
asked by Mark 
math
A. Find the mode of the following set of numbers. b. Find the range of the following set of numbers. 11, 13, 13, 12, 11, 12, 13, 10, 14
asked by born slow 
math
6n+5 if n =4.5 what is n
asked by trey 
math/alg
Use the product rule to find the derivative of (2x^2 + 3)(3x + 5).
asked by Ethan 
math
Which of the following inequalities has x > 4 as a solution? A: 6x < 24 B: x + 4 > 0 C:5x + 2 < 18 D: 4x + 2 > 14
asked by Katherine 
Math
consider the following linear equataion: 4x+11y=2011 How many solutions are there such that x and y are positive integer? (note the date 4/11/2011)
asked by Diana 
trig
use a sum or difference identity to find an exact value cos pie/12
asked by alex 
social studies class 2
why sick grouped in one community?write at least 3 resons.
asked by abdul moiz 
organic chem
Suggest the syntheses of putrescine and cadaverine from ethyl bromide
asked by lauder 
Math
A particle P of mass m=1 moves on the xaxis under the force field F=36/(x^3)  9/(x^2) (x>0). Show that each motion of P consists of either (i) a periodic oscillation between two extreme points, or (ii) an unbounded motion with one extreme point,
asked by Daphine 
social studies class 2
write at least three differences among these community. (1)Muslims.(2)Hindu.(3)Sick.(4)Christin.
asked by abdul moiz 
Slope Int, Form
how to solve y= x4
asked by Anonymous 
math
Find the fivenumber summary of the following set of numbers. 341, 233, 181, 368, 247, 551, 286, 223, 313
asked by Ms. gladys 
history
In the 1950's, how did some corperations expand to protect themselves against the dangers of economic downturns?
asked by Brittany 
math
x^3  3x^2 + x Substitute 3 for x so i got 3^3  3(3)^2 + 3 27  3  9 + 3 24  9 + 3 15 + 3 18 Is this correct ??????????//
asked by Matt 
math
At what rate are Martin's FICA taxes withheld? 7.5
asked by Anonymous 
Science
Imagine you made a gallon pitcher of lemonade for your family picnic.You poured the lemonade into 12 paper cup until there wasn't a drop left.Is the volume of the lemonade in the pitcher and the lemonade in the 12 paper cups put together the same or
asked by Frances 
algebra
_____j  4.5j =3.8j
asked by jesse 
science
how do you find out the chlorine level in water after you have found how many drops of silver nitrate is needed to turn 20ml of water combinde with 2.5ml of protasium chromate a permanent red.
asked by Gibbin 
Math HELP PLEASE
A particle P of mass m=1 moves on the xaxis under the force field F=36/(x^3)  9/(x^2) (x>0). (a)Initially P is projected from the point x=4 with speed 0.5. Show that P oscillates between two extremes points and find the period of the motion. (b)Show that
asked by Daphine 
math
what is the answer to this math problem, y= 1/4(x+3)^23
asked by dianne 
history
What ultimately changes John Adams's mind and favor of American revolution?
asked by vivian 
math
does a 8 plus 7 equal 15 then?
asked by cassandra 
p.e.
How to fill out an observation document?
asked by deidra 
lit
i need help on describing LADY MONTAGUE in romeo and Juliet.
asked by kathy 
science
what is the condidtion of earths atmosphere at a particular time and place?
asked by selena 
science
why do astronomers use these measures instead of centimeter meters and kilometers
asked by yuku 
MATH
A paper is 28cm long, how many meters is this?
asked by TREVOR 
Math
gallons of milk were $2.30 each. Write an expression to show this for “g” gallons.
asked by Angela 
social studies
Nepal is a country of full of geographical diversities
asked by suchana 
math
need help with the setup on this problem.. if something grows @ 10% per year how long would it take to go from 100 to 300?
asked by lofo 
computers
in a business report, what spacing should you use between lines?
asked by james 
medical terminalogy
Some technical terms pass into common usage as knowledge about a field spreads Think of three such terms that have passed into common usage recently?
asked by diane 
math
5/11 + 4/9
asked by Markeese 
History
IS WWII and The holcaust too diferent things or did the holcaust happen during WWII
asked by Heather 
math
1 kg= g
asked by steven 
english
in english we have to make an album of 6 songs that relate the the play, the tragedy of julius caesar. one for each act and then one that summerizes the main theme of the play. please help
asked by randijo 
college algebra
Shellie pays $4.00 for a square piece of wood, which she makes into a stop sign by cutting the corners off. what is the cost of the wasted part? I don't even know where to begin? do I take $4.00*1/8....which equals half and subtract that from
asked by algebrajunkie 
writing
thesis statement for public transporation
asked by vanessa 
science
What is the current produced by a potential difference of 240 volts through a resistance of 0.2 ohms?
asked by Haley 
MATH
A state sales tax is levied at a rate of 7.5%. How much tax would one pay on a purchase of $550.
asked by Marissa G. 
organic chem
(1) Isobutyraldehye + formaldehyde + NaOH/H2O → II (C5H10O2) what is the structure?
asked by mie 
math
what is 5 divided by 4?
asked by cassandra 
math
what is 20 plus a 3?
asked by cassandra 
math
(8+ )*m=5m
asked by jesse 
I need help to unscramble these words in spanish
oaincooEdm arAilulq incEle asertdarccteoipPr erIoscrdapm loEcernoict lpaLaeliuc mroipliEeltbe
asked by Carl 
math
1 plus 15 equals what?
asked by cassandra