Questions Asked on
April 27, 2012

chemistry 2
A voltaic cell is constructed with an Ag/Ag+ halfcell and a Pb/Pb2+ halfcell. Measurement shows that thesilver electrode is positive. Write balanced halfreactions and the overall spontaneous reaction.
asked by anonymous 
math URGENT!
28. You are surveying students to find out their opinion of the quality of food served in the school cafeteria. You decide to poll only those students who buy hot lunch on a particular day. Is your sample random? Explain. 29. Ira wants to determine the
asked by jksl 
psychology
I am sorry. I do not understand this question. It has been only an year since I came to America and I have hard time understanding teacher and textbook. THis is the question for my homework but I do not know the right answer to this. Thank you everyone.
asked by Delhi 
Calculus
Breathing is cyclic and a full respiratory cycle from the beginning of inhalation to the end of exhalation takes about 5 seconds. The maximum rate of air flow into the lungs is about 0.5 L/s. This explains, in part, why the function
asked by Elizabeth 
physics
A 50.0kg cyclist on a 10.0kg bicycle speeds up from 5.0m/s to 10.0m/s , the total kinetic energy before acceleratingis 750, and after acceleratingis 3000, how much work is done to increase the kinetic energy of the cyclist and the bicycle
asked by Melissa 
Chemistry
An ice cube at 0.00 degree celsius with a mass of 23.5 g is placed into 550.0 g of water, initially at 28.0 degree celsius, in an insulated container. Assuming that no heat is lost to the surroundings, what is the temperature of the entire water sample
asked by Amir 
physics
On July 15, 2004, NASA launched the Aura spacecraft to study the earth's climate and atmosphere. This satellite was injected into an orbit 705 {\rm km} above the earth's surface, and we shall assume a circular orbit. How many hours does it take this
asked by Amber 
geometry
A cone is created from a paper circle with a 90° sector cut from it. The paper along the remaining circumference of the circle is the base of the cone. Find the radius of the base of the cone. Round to the nearest hundredth.
asked by Alan 
biochemistry
What is the net charge on PheAsp at each pH? a. pH 1 b. pH 7 c. pH 14
asked by krystal 
chemistry
1.0 M aqueous solutions of AgNO3 , Cu(NO3 )2 and Au(NO3 ) 3 are electrolyzed in the apparatus shown, so the same amount of electricity passes through each solution. If 0.10 moles of solid Cu are formed how many moles of Ag and Au are formed?
asked by James 
Chemistry
In a 0.05M solution of a weak monoprotic acid,[H+]=.0018.What is its Ka?
asked by Danny 
chemistry
what will be the final temperature of a system in which 150.0g of water at 5.0 degrees C are added to 1.00L of water at 90.5 degrees C?
asked by RoseBud 
chemistry
Ethylene glycol, C2H6O2, is used as antifreeze for automobile engines. If you want to produce 2.00 kg of ethylene glycol from the reaction of C2H4Cl2 and Na2CO3, what is the minimum amount of Na2CO3 that is needed? C2H4Cl2(l) + Na2CO3(s) + H2O(l)=C2H6O2(l)
asked by Maggie 
physics
(a) What is the frequency of a photon whose energy is 3.5 times the rest energy of an electron? (b) What would be the linear momentum of the photon?
asked by joe 
Alg 2
If there are 12 candidates in a city election. The winner will be the mayor and the runner up will be the vice mayor. How many different combinations of mayor and vicemayor are possible? Would it be 12P2 = 132 ? o:
asked by Lisa 
chemistry
what mass of water at 10.0 degrees C is needed to cool 500.0ml of tea from 25.0 degrees C to 18.3 degrees C? Density and specific heat of the tea are the same as water.
asked by RoseBud 
STATS
recent 10K run the finisher are norm dist with a mean of 55 min and stand dev of 13 A) determine the percentage of finishers with times between 45 and 75 min B) determine the percentage of finshers less than 80 min C) obtain the 30th percentile D) find the
asked by RACHELLE 
DYNAMICS
a particle moves on a circular path of 20 ft radius so that its arc distance from a fixed point of the path is given by s= 4 t^210t where a is in feet and t is in seconds. compute the total acceleration at the end of 2 sec.
asked by aaa 
chemistry
an empty glass tube weights 37.3 g. when filled to the rim with water is weighs 54.1g. what is the volume of the glass tube?
asked by RoseBud 
dynamics
at the bottom of a loop the speed of an airplane is 400 mph. this causes a normal acceleration of 9 g ft/sec^2, determine the radius of the loop
asked by aaa 
biochemistry
a. What is the net charge on valine at pH 1? b. at pH 7? c. at pH 14?
asked by krystal 
statistics
any state auto insurance company took a random sample of 370 insurance claims paid out during a 1year period. the average claim was $750 with a standard deviation of $150. find .99 confidence interval for the mean claim payment.
asked by b 
Chemistry
The solubility of NH4CL is 50g/100g of water at 50°C. How many grams of NH4CL will dissolve in 20 g of water?
asked by Ay3 
chemistry
an empty jar weighs 1.43 pounds. How much will it weigh when 1.00L of homgenized milk is poured into it? trhe density of homogenized milk is 1.03g/ml. (1 pound= 453.6g)
asked by RoseBud 
Chemistry
A heliox deepsea diving mixture delivers an oxygen partial pressure of 0.20 atm when the total pressure is 13.0atm .What is the partial pressure of helium in this mixture?
asked by Jessica 
physics
A large rock that weighs 164.0 N is suspended from the lower end of a thin wire that is 3.00 m long. The density of the rock is 3200 kg/m^3. The mass of the wire is small enough that its effect on the tension in the wire can be neglected. The upper end of
asked by anonymous 
Chemistry
The reaction (nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water vapor) is believed to take place in three steps, the first of which is the fast reversable dimerization of NO to form N2O2, and the last of which is the reaction N2O +
asked by Crystal 
geometry
A shuttle bus for a festival stops at the parking lot every 18 minutes and stays at the lot for 2 minutes. If you go to the festival at a random time, what is the probability that the shuttle bus will be at the parking lot when you arrive?
asked by Anonymous 
Algebra
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=16t^2+vt+s(where h and s are in ft, t is in seconds and v is in ft/sec) a ball is thrown upward with initial
asked by Billy 
Chemistry
Suppose that 50.0mL of 0.240M sulfric acid requires 36.0mL of KOH solution to reach its endpoint. What is the molarity of the KOH solution?
asked by Leonarda 
algebra
The circular path of cars on a ferris wheel can be modeled with the equation x^214x+y^2150y=49, measured in feet. What is the maximum height above ground of the riders.
asked by Dena 
Maths
Solve: 5ax+6by=28 , 3ax+4by=18 using cross multiplication method
asked by Ashley 
chemistry
For each of the following precipitation reactions, calculate how many grams of the first reactant are necessary to completely react with 17.5 of the second reactant.
asked by Aaron 
algebra 2
A swimming pool in the shape of an ellipse is modeled by x^2/324+y^2/196=1, where x and y are measured in feet. Find the shortest distance (in feet) across the center of the pool? i think its 28 feet....
asked by sam 
science
A relative density bottle has a mass of 40g when empty, 90g when filled with water and 80g when filled with oil. Calculate the relative density of the oil.
asked by isaac 
Humanities
Which of the following pairs believed that all people are driven by selfinterest? A.Bentham and Machiavelli B.Bentham and Mill C.Socrates and Plato D.Kant and Sartre
asked by yong 
maths
i will be greatful to you if you help in solving the below problems: 1.)Prove that log15=log5+log3 2.)Show that log10800=4log2+3log3+2log5 3.)show that log108/605=2log2+3log3log52log11.
asked by srikar 
MATH URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Tara is researching the stork population living in a bird reserve. On her first day, she captures and tags 37 birds. Two weeks later, she captures 48 birds and finds that 30 are not tagged. Estimate the actual number of storks in the bird reserve. 27. In a
asked by Eric 
databases
Fernando Cilebra has always ben facinated by skateboards. Fernando has won several contests, both locally and nationally. His interest in skateboards led him to open Fernando's Shop in Denton, Maine. Fernando sells street, trick, and children's
asked by Gloria 
algebra 2
Graph the equation. Identify the vertices, foci, and asymptotes of the hyperbola. Y^2/16x^2/36=1 I think....vertices (0,4),(0,4) foci??? asymptotes y=+/ 2x/3
asked by sam 
Calculus
I'm supposed to find the average value of the function over the given interval. f(x) = sin(nx), interval from 0 to pi/n, where n is a positive integer. I know the average value formula, and I know that the integral of that function would be (1/n)cos(nx),
asked by Anna 
geology
Create a 12 to 15 slide Microsoft® PowerPoint® presentation for your chosen geologic feature. Address the following: · Describe the various geologic events that have occurred in the region around your feature. · Describe the geological features and
asked by sweetbev 
calculus
In a certain city the temperature (in degrees Fahrenheit) t hours after 9 a.m. was approximated by the function T(t) = 50 + 14sin((pi*t)/12). Find the average temperature (in degrees Fahrenheit) during the period from 9 a.m. to 9 p.m. I got
asked by Elizabeth 
Chemistry
which of thh following reactants would you add to an aqueous solution of ammonium sulfate in order to precipitate quantitatively all the sulfate? A. CaCl2 b. Al(NO3)3 c. Zn(C2H3)2)2 d. KBr
asked by Rosebud 
physics
A 6.0g pellet of lead at 32 degrees c gains 36.8 J of heat. What will be its final temperature
asked by Melissa 
Ashford University
I have (10) questions in History (HIS204). 1. What is Leon Czolgosz most remembered for? (Points : 1) Anarchism Assassination Socialism Terrorism 2. At the end of the SpanishAmerican War, what defined the way that the United States attempted to exert its
asked by Anonymous 
chemistry
Using the halfreaction method, balance the redox reaction below. Show your work; partial credit will be given. I + Br2 → IO3 + Br Write the reduction and oxidation halfreactions. Balance them for atoms. Balance each of the halfreactions for charge.
asked by Anonymous 
Chemistry
A fossil is found to have a C14 level of 86% compared to living organisms. How old is the fossil?, (the half life of C14 is 5730 years).
asked by Mima 
algebra 2
What are the covertices of the ellipse 3x^2+2y^2=72? thank you....
asked by amy 
Algebra
3. There are 12 red checkers and 3 black checkers in a bag. Checkers are selected one at a time, with replacement. Each time, the color of the checker is recorded. Find the probability of selecting a red checker exactly 7 times in 10 selections. Show your
asked by Liz 
statistic
a bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 175 and a standard deviation of 15. if an applicant is randomly selected, find the probability of a rating that is between 150 and 200
asked by charmaine 
Consumer Math
Find the annual amount of FICA at a 7.51% rate by computing his annual salary. Sam Takagi Weekly salary: $435.16 Not selfemployed Find the annual amount of FICA by computing his annual salary. $169,938.68 $16,993.87 $1,699.39 2. Find the annual amount of
asked by Emily 
Humanities
If the protection itself were the sole basis for a society's morality, which of the following laws would that society want passed? If the protection itself were the sole basis for a society's morality, which of the following laws would that society want
asked by yong 
Chemistry
Consider a process in which an ideal gas is compressed to onesixth of its original volume at constant temperature. Calculate the entropy change per mole of gas. I know that the formula is chg.entropy= nRln(V2/V1), but how do I get the values for V2 and
asked by Jematormal91 
chemistry
A voltaic cell is made with aluminum and zinc electrodes. (For Ag+(aq) + e → Ag(s), E0 = 0.80 V and for Cu2+(aq) + 2e → Cu(aq), E0 = 0.34 V)On the diagram below, draw and label: the salt bridge, the electrical connection between the two jars, the
asked by Anonymous 
math
In the glass atrium at the entrance to the city aquarium, a designer wants to suspend a 2400N sculpture of a dolphin. It will be secured by three chains, each of length 4 m. The chains are anchored to the ceiling at three points, spaced 3 m apart, that
asked by justin 
LIfe orientation
Identify and describe one environmental problem that causes ill health, accident,crises,and disasters with in south africa or globally (5)
asked by Bongani 
statistics
assume adults have an IQ score that are normally distrubted with a mean of 105 and standard deviation of 20 A) find the percentage of adults that have an IQ between 94 and 116 B) find the percentage of adults IQ exceeding 120 C)Determine the 1st, 2nd, and
asked by VICTORIA 
physical science
two tuning fork are struck at the same time. one tuning fork has a frequency of20 hz while the second tuning fork has frequency of 226 hz. how beats will result?
asked by dbbbsnhr 
Trig Help!
Question: Trying to find cos π/12, if cos π/6 = square root 3 over 2, how to find cos π/12 using DOUBLE angle formula? This is what I got so far.. cos 2(π/6) = cos (π/6 + π/6) = (cos π/6)(cos π/6)  (sin π/6)(sin π/6) = cos^2 π/6  sin^2 π/6 Is
asked by Anonymous 
Chemistry
3.42 grams of Ba(OH)2 is placed in a flask, dissolved in water, and titrated with an HCI solution. It is found that 25.0mL of the HCI solution is required to just neutralize the Ba(OH)2. What is the molarity of the HCI solution?
asked by Leonarda 
spanish/check please
Va de compras con una amiga.Te dice que necesita comprar y tu' le das consejos usando palabras como (este,esta,y esto) ( Hint tell your friend to buy clothes) Necessito unos pantalonesCompra (estos) pantalones Necessito una camisetaCompra
asked by JOSEPH 
chemistry
Using the changeinoxidationnumber method, balance the redox reaction below. Show your work; partial credit will be given. NO2– + MnO4– → NO3– + Mn2+ Figure out which atoms’ oxidation numbers are changing, and by how much. Balance the equation
asked by Anonymous 
Art 101
Describe how each artist(Da Vinci and Michelangelo) View drawing as part of the creative process.
asked by Carla 
algebra 2
What is the equation of an ellipse with a vertex of (0, 3) and a covertex of (2 , 0)? i think its 9x^2+4y^2=36...not sure
asked by sam 
algebra
It took a contractor 1285 hours to manufacture their first unit of an item. If the contractor expects to acheive a 92% unit learning curve, how many hours would be required to manufacture units 51100/
asked by Mary 
Physics
Pls sir, kindly send the solution to my email. thanks. 1)A boat propelled so as to travelled with a speed of 0.50m/s in still water, moves directly ( in straight line ) across a river that is 60m wides. The river flow with a speed of 0.30m/s. How long in
asked by Abbey 
algebra 2
Graph the equation. Identify the vertices, covertices, and foci of the ellipse. 64x^2+16y^2=1024 This is what i have so far vertices (0,8)(0,8) foci(0,4√3),(0,4√3)
asked by sam 
Algebra
Bayside Insurance offers two health plans. Plan A pays $90 + 40%. Plan B pays $140 + 35%. Giselle would savfe with plan B if she had more than in bills.
asked by Natalie 
math
How tall is a man that casts a shadow at the same time a 40 ft. building casts a 60 ft shadow?
asked by Anonymous 
physics
a circular wire loop of radius 5cm lies in the xyplane in a magnetic field defined by B=(4t^2+3t).determine the voltage across the resistor at time t=2s
asked by musa 
Chemistry
the heat of fusion water is 335J/g,the heat of vaporization of water is 2.26kJ/g, the specific heat of water is 4.184J/deg/g. how many grams of ice at 0 degrees could be converted to steam at 100 degrees C by 9,574J
asked by Randy 
Chemistry
based on the following chemical equation HCN+O2 yields N2+CO2+H20 identify the limiting reactants and the mass of N2 produced when 100.0g of HCN react with 100.0g of O2. a. the limiting reactant is HCN and 25.9g of N2 are produced b. the limiting reactant
asked by RoseBud 
algebra
What is 3 radical 250 expressed in simplest radical form ?
asked by yamileks rodriguez 
algebra2
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=16t^2+vt+s (where h and s are in ft, t is in seconds and v is in ft/sec) Solve for t when the object hits the
asked by Nancy 
spanish/check please
Completa la oracion usando las palabras este,ese,aquella oaquellos.) (Hint:Complete the sentence using este, ese,aquella,o aquellos) 1. Mira el caballo que esta delante de mi.Mira( ....) caballo. answer:( ese) 2 ¿Ves la llama que está lejos de nosotros?
asked by JOSEPH 
Chemistry
Consider a process in which an ideal gas is compressed to onesixth of its original volume at constant temperature. Calculate the entropy change per mole of gas.
asked by Jematormal91 
chemistry
am in need of help with my final project in Geology. I have to create a 1215slide powerpoint presentation on Factors and Forces of Geological Features, The Barnett Shale. I have the final rubric Final Rubric: Factors and Forces of Geological Features
asked by sweetbev 
math
solve for x 4(2x1)= 2x+35
asked by joan 
Chemistry
1. What mass of carbon is required to produce 100kj of heat, when burned in air? Enthalpy change = 392kj. 2. What mass of methanol is required to produce 1000kj of heat, when burned in air?
asked by Josie 
Calculus 2 correction
I just wanted to see if my answer if correct the integral is: ∫(7x^3 + 2x  3) / (x^2 + 2) when I do a polynomial division I get: ∫ 7x ((12x  3)/(x^2 + 2)) dx so then I use u = x^2 + 2 du = 2x dx 1/2 du = x dx = ∫7x  12/2∫du/u  3/1∫1/u =
asked by Tom 
chemistry
Several things stand in the way of hydrogen fuel cells becoming widely used. Is it easy or difficult to store enough hydrogen to fuel a car? Is the technology expensive or cheap? Is the infrastructure present?
asked by Anonymous 
Simple & Compounding Interest
I am SO STUCK on this problem... PLEASE HELP ASAP!!! Suppose Kevin and Jill both deposit $4000 into their personal accounts. If Kevin’s account earns 5% simple interest annually and Jill’s earns 5% interest compounded annually, how much will each
asked by Need Help!!! 
Environmental Chemistry
The Henry’s Law Constant for dimethyl sulfide is 0.14 mol/Latm. Its atmospheric concentration is 0.001 ppb (i.e., 0.001µg/L). Calculate the dissolved concentration of dimethyl sulfide in water.
asked by Helen 
math
What's the length of the arc ab and the area of the sector aob
asked by james 
Geometry
The three angles of a triangle have measures 12x degree, 3x degree, and 7y degree, where 7y>60. If x and y are integers, what is the value of x?
asked by Anonymous 
Algebra 2
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time t is given by: h=16t^2+vt+s (where h and s are in ft, t is in seconds and v is in ft/sec) If a rock is dropped from the top of
asked by Nancy 
chemistry
you add 13.7g HCL to water and make 500 mL solution. what will the solutions osmotic pressure be?
asked by Nicolette 
algebra 2
Write an equation in standard form for the hyperbola with center (0,0), vertex(4,0) , and focus (8,0). 1) x^2/64x^2/16=1 2)x^2/16y^2/64=1 3)y^2/48x^2/16=1 4)x^2/16y^2/48=1
asked by sam 
Chemistry
A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of .15mol/L What is the neutralizing volume of the phosphoric acid?
asked by Kelly 
math
how do you evaluate this expression 14.6+[(4221.4)*35]
asked by shion 
gcse geography
Please could someone help me with this question. 5 arguments for wild farms and 5 argumets against wild farms. thankyou for taking the time to help me.:)
asked by Kim 
Chemistry
Hydrogen atoms are excited to the stationary state designated by the principal quantum number, n= 4. What will be the number of lines(frequencies) emitted by the hydrogen atoms?
asked by Wube 
Reiny Damon Bobpursley?
Thanks for reading this! A triangular prism has vertices at A(2,1,1) B(2,1,4) C(2,2,1) D(1,1,1) E(1,1,4), and F(1,2,1)? This question has two parts: 1  Which image point has the coordinates (3,2,1) after a translation using the vector I'm
asked by Tabby 
math
The width of a rectangle is x inches long. The length of that rectangle is 5 inches less than Twice the width. If the perimeter measures 26 inches, what is the measure of the length and width of the rectangle.
asked by marie 
physics
A transparent hemisphere of refractive index 1.5 and radius of curvature 20 cm is placed flat side down on a piece of paper with a 4.0 mm tall letter G written on it such that G is in the center.What is the size of G when viewed directly from above
asked by sand 
Social Studies
Need to unscramble letters of a geography phrase saiwnsgiem it is two words _ _ _ _ _ _ _ _ _ _ Can you help figure?
asked by Jenay 
History
I need some information on China's modern genocides and crimes against humanity staying the 20th century.
asked by Logan 
English
Help me to write these answer question, Write an essay that illustrate the saying every cloud has a silver lining in 340 words
asked by David 
life orintation
identify and describe one environmental problem that causes ill health,crises,accidents,and disasters within your community or any other community within south africa or globally
asked by peter 
Physics
A pendulum consist of a particle P of mass m, attached to one end of a model string of length l=2.85m. The other end of the string is attached to a fixed point O and the particle moves in a vertical circle about the fixed point. The angle made by the
asked by Anonymous 
Life orientation
Critically discuss 8 ways in which the environmental problem(teenage pregnancy)impacts on our community
asked by Terry 
Chemistry
Calculate the mass of each compound containd in 60g of a 4.5%m/m CaCl2(aq)solution
asked by Victoria 
compound interest
If I invest $30000 at 10% compound interest for eighteen years how much will i get
asked by alan 
calculus
I need to prove that the following equation is an identity: (1 + tan(theta/2))/(1tan(theta/2))=tan(theta)+sec(theta)
asked by Rod 
computer science
XYZ Corporation employs 40,00 people with their own associated IP addresses, and operates over 400 servers, including email (SMTP and POP3), FTP, Web, and DHCP at two locations: one in Muncie, Indiana, the other about 20 miles away in Hartford City. Dual
asked by Ginger 
Differential Calculus
y = 1 + (x1)^(1/2) Considering the interval (2,4), calculate delta(y) and dy. would delta(y) be: delta(y) = f(4)  f(2) = (1 + squr(3) )  2 = squr(3)  1 and dy is 1/(2 squr(x1)) dx Thank you
asked by Jeremy 
business statistics
This select group has been asked to consider the Colorado City Convention and Visitors Bureau survey of 25 hotels in the local area. The survey is concerned with the current availability of rooms. The availability of the rooms was as follows: 90, 72, 75,
asked by taabbie 
Algebra 2
A bug is placed on the road. t seconds after it is put down, the function is p(t) = 16tsquared + 64t, where p(t) is measure in feet. At what moment will the bug be 14 feet from where it began?
asked by Marcia 
business law
at issue in the twentyfirst century is the tradeoff between the necessity of writers, musicians, artists, and movie studios to profit from their work and the free flow of ides for the public benefit. Move and music industry participants claim that
asked by tam 
Math
How do I simplify this? :l 4(x+y)]/(5x^2y^3) ÷ (2x2y)/10
asked by Lea 
MathFuntions
1)Expand and simplify. Express each equation in standard form. a) f(x) = 2(x1)(x+4)(x+1)(x3) b) f(x) = (x+2)(x+1)(x+4) c) f(x) = x(x6) 2) For each function in question 1. state the degree of the polynomial and identify the type of function
asked by sandra 
Pre Calculus
An antenna is located at the top of a building 1000 ft tall. From a point on the same horizontal plane as the base of the building, the angles of elevation from the top and the bottom of the antenna are 65.8 degrees and 62.6 degrees respectively. How tall
asked by Connie 
statistics
Fred’s car insurance premium is £448 compared to last year when it was only £375. What is the percentage increase?
asked by Anonymous 
algebra 2
find the product (2a+1) cubed
asked by scott 
economics
The differing goals of the Fed and Congress represent which type of problem?
asked by dijah 
chemistry
Determine the emf for the cell noted below. (For Co3+(aq) + e → Co2+(aq), E0 = 1.80 V, and for Na+(aq) + e → Na(s), E0 = 2.71 V.) Na(s)  Na+(aq)  Co3+(aq), Co2+(aq)  Co(s) What is being oxidized? What is being reduced? What has the more positive
asked by Anonymous 
Chemsitry
Hi I have done this problem like 15 times when I find the mole I get .8 for HCL and .23 for Naoh and the equilibrium conc i get is negative. then I plug it in and get it wrong. Can someone please help me? Complete the table below: Note: Make simplifying
asked by someone 
algebra 2
Write an equation of the ellipse with center at (0, 0), vertex at (4, 0), and covertex at (0, 2)
asked by sam 
algebra 2
Write an equation of the hyperbola with foci (0, 2) and (0, 2) and vertices of (0, 1) and (0, 1).
asked by sam 
algebra 2
Write an equation of an ellipse with center at (0, 0), covertex at (4 , 0), and focus at (0, 3). I think its... X^2/16+y^2/9=1
asked by sam 
algebra 2
Write an equation of the hyperbola with vertices at (–7, 0) and (7, 0) and foci at (–9, 0) and (9, 0)
asked by sam 
Physics
a plastic light pipe has anindex of refraction 1.53.For total internal reflection, what is the minimum angle of incidence if the pipe was in the air
asked by @@@TASHA@@@ 
spanish/check please
Va de compras con una amiga.Te dice que necesita comprar y tu' le das consejos usando palabras como (este,esta,y esto) ( Hint tell your friend to buy clothes) Necessito unos pantalonesCompra (estos) pantalones Necessito una camisetaCompra
asked by JOSEPH 
srac
do you give grants to 17 year olds through hhs human service
asked by toni 
Finance
Calculate the weighted cost of equity for a firm with the following characteristics: (a) Last Dividend$5.00, (b) Growth Rate—6%, (c) Price of Stock$125.00 and (d) Weight of Equity Capital—40%
asked by David 
consuer math
Question 1: The cost of joining a gym is $195 plus $50 per month. Rewrite the equation to express cost as a function of time, identify the slope and the yintercept.
asked by alex 
English  ms. sue
ms. sue for yesterday chapter questions on water for elephants i hve few more questions the main character say all i do is put time wait ing... that mean he feeling down and not want to live anymore, he give up?
asked by Mohammad 
Science
I have a few questions if someone could please help with them: Which of the following is true: A.Relative dating tells us how long ago something existed B.Disconformities are less common but usually far more conspicuous because the strata on either side
asked by Kelly 
statistics
A sociologist is studying marriage customs in a rural community in Denmark to determine the age of the woman at the time of her first marriage. The sample standard deviation of these ages was 2.3 years. The sociologist wants to estimate the population mean
asked by b 
Evaluating Limits
Evaluate lim x/((x+2)^2  4) as x> 0 or state that the limit does not exist. My book said I can substitute 0 into the equation. I did that and came up with ____0_____ (0+2)^2 4 which simplifies down to ___0___ which = _0_ which = _0_ = 0. 2^2  4 44 0
asked by Tabby 
english
In what ways does Peter Pan (the play) explore notions of masculinity and femininity for its time period? Based on examples from the text, what is expected of boys/men and girls/women?
asked by Monica 
math
How do u simplify . Express final answer using positive exponents. 2^3= (B^4)^3=
asked by tae 
Algebra
Give exact approximate solutions? HUH? to three decimal places. y^220y+100=64 In terms of i and use radicals if needed. :) Thanks
asked by Michelle27 
consumer math
The cost of joining a gym is $195 plus $50 per month. Rewrite the equation to express cost as a function of time, identify the slope and the yintercept.
asked by alex 
physics
a farmer moves along the boundary of a square field of side 10 meter in 40 seconds. what will be the magnitude of displacement of the farmer at the end of 2 minutes and 20 seconds from his initial position?
asked by afrin 
MathFunctions
1)Expand and simplify. Express each equation in standard form. a) f(x) = 2(x1)(x+4)(x+1)(x3) b) f(x) = (x+2)(x+1)(x+4) c) f(x) = x(x6) 2) For each function in question 1. state the degree of the polynomial and identify the type of function
asked by sandra 
trig
Consider the trigonometric function f(t) = 3+4cos(pi/3(t3/2)) What is the amplitude/period of f(t)? What are the maximum and minimum values attained by f(t)?
asked by Dave 
veterinarians as prescribers
Alteration of the physical form of a drug outside its label is
asked by brad 
Statistics
A study in Orlando, Florida claimed that the mean commute time for all employees working at Disney exceeds 40 minutes. This figure is higher than what was assumed in the past. The plan is to test this claim at a level of significance = 0.05 and a sample
asked by Latoya 
biochemistry
Why does a change in pH usually produce a change in the ability of an enzyme to act as a catalyst? A. When the pH changes, the enzyme may lose its native conformation and lose its ability to function as a catalyst. B. When the pH changes, enzymes are
asked by krystal 
chemistry
what is the hcl of 2.00x 10 squared mL of 0.51
asked by patricia 
math
determine if these lines are parallel, perpendicular, or neither 2x+5y=8 and 5x+2y=2
asked by Ashley 
Chemistry
Mg>Al>Ca>Rb>I
asked by Joy 
English  ms. sue
Ms. sue for the persasive essay on glass castle, you tell me to give examples in essay to prove thesis which be that her father be better parent. The teacher say there have to be 4 bodies. So the first one be introduction, second one and third one be
asked by Mohammad 
math
When a person is swinging the amplitude (the swings"s distance above it's rest position) increases with each pump. According to Scientific magazine the amplitude increases by adding a constant when the person pumps sitting down, and by multiplying by a
asked by John 
Chemistry
What physical properties will the ionic compound CaSO4 be expected to have?
asked by Jesse 
chemistry
When setting up an electroplating system, how do you set up the terminals of the voltage source to the anode and cathode? Does oxidation or reduction happen at the cathode? What does this require? Based on your answer, to which terminal of the battery
asked by Anonymous 
chemistry
What is the general form of a common automobile battery? How many electrodes does a car battery use? Does it use an acidic aqueous electrolyte solution? Is the battery rechargeable? Is the battery voltaic or electrolytic when discharging? Is the battery
asked by Anonymous 
Algebra
f(x)= x^2 + 2x + 15 I search for the coordinates and keep coming up with (3,5,0) Yes, I am a idiot. Can someone help please?
asked by Alexis2 
physics
A transparent hemisphere of refractive index 1.5 and radius of curvature 20 cm is placed flat side down on a piece of paper with a 4.0 mm tall letter G written on it such that G is in the center.What is the size of G when viewed directly from above
asked by sand 
Medical Coding 1
Please help me with these questions to see if I'm right or close 1. Which of the following ICD9CM code groups is used to report the infant status after delivery of a birth event? A. V27.0–V27.9 B. V26.0–V26.9 C. V29.0–V29.9 D. V28.0–V28.9 I
asked by Alisha M 
geometry
AB=5 BC=9 AC=8
asked by Anonymous 
exp 105
The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so.” (
asked by Anonymous 
chemistry
2octanol and 1phenilethanol. which one more polarity?
asked by trang 
Math
what is $10.5002 rounded to the nearest cent, dime, and dollar. My work: cent: $10.50 dime: $10.50 dollar: $2:00 Did I do good?
asked by george 
Solving Trig equation
Solve the trig equation exactly in the interval 0≤x≤2π. tan x + tan π/3  = square root 3 1  tan x tan π/3
asked by Anonymous 
math
write the following in compact form using factorials a. 38*37*36*35*34*33 b. 14!/19*18*17*16*15
asked by Nathan 
ECO/372
what happens to the monry interrest rates and the economy if the federal reserves is not the seller of government bonds? I know the interest rates go down but not sure what else?
asked by at 
algebra
Write the slope intercept equation for the line containing the given pair of points. (6,8) and (3,5)?
asked by carol 
Algebra/Steve
Hi, I am looking for the x coordinates only..f(x)= x^2 + 2x + 15 Thanks..
asked by Alexis2 
infinite geometric series
7. ‡” 8on top(1/2)^n1 n=1 8.‡” 8 on top 3(0.4)^n1 n=1
asked by Algebra 2 
math
A geometric series has first term 8 and third term 20 what does the fifth term equal? What does the third partial sum equal?
asked by Kate 
math
When a number is divided by 42 the remainder is 39 and when it is divided by 36 the remainder is 33.find the number.
asked by Clovis 
math
how do you evaluate this expression 18.9[(33.3~11.1)*6]
asked by shion 
math
how do you evaluate this expression 18.9[(33.3~11.1)*6]
asked by shion 
Math
prove the identity: sin^2 O/ 1cos O = 1+cosO O= theta
asked by amber 
math
how do you evaluate this expressuion 18.9[(33.3divied11.1)*6]
asked by shion 
math
how you evaluate this expression 3*[(18*5)divide3]
asked by shion 
math
how do you evaluate this expression 3*[(18*5)divide3]
asked by shion 
MATH
if I scored 72 out of a 100, what do i need to score to bring up may average to 80%
asked by Phil 
Intermediate Algebra
Find the Absolute Value by solving this algebraicequation? x1/3=1/2x+1/6
asked by Roger 
math
evaluate 18.8[(33.3^11.1)*6]
asked by shion 
environment
do you agree human should be allowed to change the nature?
asked by Koia 
Geography
What is the easternmost nation of southern Europe?
asked by Anna 
environment
how do people from the Pacific treat the environment?
asked by Koia 
Physics
500 J of heat are added to 59 g of water initially at 20°C. (a) How much energy is this in calories? (b) What is the final temperature of the water? I know that to find (a) I have to use the constant 4.19 J and divide it into the 500 J yielding 119.33
asked by Mandi 
Reiny or Damon or Bobpursley
Express the series 11 + 18 + 27 +...+ 171 using sigma notation. Usually you would take 2718 and that's the step between numbers, right? (I think its the kvalue?) But 2718=9 and 1811=7. Are we stepping by k+2 here? Like k, k+2 k+4, k+6...? Please help
asked by Tabby 
Chemistry
What are the possible values of the azimutal quantum number for an electron in the 4f subshell?
asked by Wube 
science
Create a 12 to 15 slide Microsoft® PowerPoint® presentation for your chosen geologic feature.
asked by sweetbev 
geology
Use the following table to identify five historical events influenced by the depletion of natural resources. Explain each event in at least 150 words. Event What Happened? Example: Easter Island This island, now called Rapa Nui, is most notable for giant
asked by sweetbev 
com220
What other strategies might you use? Provide a rationale for your choices.
asked by denise 
Science
what does it mean that nitrogen is a limiting nutrient in many marine ecosystems?
asked by Brianna 
math
how would you evaluate 7+2.5*3=28.5
asked by shion