Questions Asked on
April 5, 2012

algebra
In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the course. What score must Andrew earn on the final exam to pass the course?
asked by amber 
Algebra (Mrs.Sue) thank you :)
Sal keeps quarters,nickels, and dimes in a jar. He has a total of 52 coins. He has three more quarters than dimes and five fewer nickels than dimes. How many dimes does sal have?
asked by micheal Garcia 
Chemistry 2
Which is reduced in the following reaction: Cr2O72+6S2O32+14H+>2Cr3+ + 3S4O62 + 7H20 A. H+ B. Cr6+ C. S4O62 D. S2+ E. O2 I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
asked by Debbie 
chem
What mass of ice at 0°C can be melted by the addition of 1670 joules of heat? When the temperature is decreased on the following system at equilibrium: 2 HCl(aq) + Mg(s) MgCl2(aq) + H2(g) + heat a. In order to restore equilibrium, the reaction shifts
asked by skye 
Chemistry 2
Which is the oxidizing agent in the reaction below. Cr2O72 + 6S2O32 +14H+ > 2Cr3+ + 3S4O62 +7H20 A. Cr3+ B. S4O62 C. Cr2O62 D. S2O32 E. H+ I believe it's D or is it C not 100% sure please help. THANKS
asked by Debbie 
geometry
If ON=2x3, LM=7x+2, NM=x+6, and OL=6y3, find the values of x and y for which LMNO must be parallelogram.
asked by Lisa 
Physics 30
A point charge q=+4.7nC is placed at each corner of an equilateral triangle with sides of 0.21m in length. a) What is the magnitude of the electric field at the midpoint of the three side of the triangle? b) Is the magnitude of the electric field at the
asked by Derek 
Chemistry 2
_________is reduced in the following reaction: Cr2O72+6S2O32+14H+>2Cr3+ + 3S4O62 + 7H20 A. H+ B. Cr6+ C. S4O62 D. S2+ E. O2 I come out with Cr2O72 but that's not an answer so my next one is B. Cr6+ am I correct?
asked by Debbie 
micro economics
1) Assume that the goldmining industry is competitive. a) Illustrate a longrun equilibrium using diagrams for the gold market and for the a representative gold mine. b) Suppose that an increase in jewellery demand induces a a surge for in the demand for
asked by Silvia 
english
What grammatical structure is the italicized portion of the sentence? Although her personality had not changed at all, Megan looked quite different is it: adverb clause infinitive phrase past participial phrase elliptical clause adjective clause
asked by john 
Physics 2
The average intensity of light emerging from a polarizing sheet is 0.807 W/m2, and the average intensity of the horizontally polarized light incident on the sheet is 0.972 W/m2. Determine the angle that the transmission axis of the polarizing sheet makes
asked by Anne 
Current/Magnetic force
A high voltage power line carries a current of 110 A at a location where the Earth's magnetic fields has a magnitude of 5.9 x 10^4 T and points north at an angle of72 degrees below the horizontal (toward the earth surface). Find the direction and
asked by Matt 
Chemistry
Copper(I) ions in aqueous solution react with NH3(aq) according to: Cu+(aq) + 2NH3(aq) > Cu(NH3)2+ (aq) Kf=6.3x10^10 M^2 Calculate the solubility (in g·L–1) of CuBr(s) in 0.65 M NH3(aq).
asked by Jematormal91 
statistics
Suppose a new treatment for a certain disease is given to a sample of n=200 patients. The treatment was successful for 166 of the patients. Assume these patients are representative of the population of individuals who have this disease. (a) Calculate the
asked by Kya 
world history
3. How did the Soviet Union respond to the normalization of relations between China and the United States? (1 point)Brezhnev invited Nixon to visit Moscow. Soviet companies set up a thriving trade with China. The Soviet Union cut off diplomatic relations
asked by Ms. Simpsonizer 
micro economics
Frank owns a soda fountain and sells milkshakes. he sells 50 milkshakes per day for $5 each. his daily cost is $290, of which $30 is fixed cost. what can you say about Franks short run decision regarding shut down and his long run decision regarding exit?
asked by Silvia 
Finite Math
An urn contains sixteen red balls and seventeen white balls. A sample of three balls is selected at random and the number of red balls observed. Determine the probability distribution for this experiment: Number of Red Balls/Probability 0...Probability=?
asked by Amanda 
physics
A 650 N student is Rollerblading at a velocity of 7.8 m/s [W] when the student trips and slides horizontally along the trail, coming to a stop 0.95s. Determine the students average acceleration
asked by Melissa 
math 11
An investment earning simple interest rate of 1.10% per annum for a term of 5 years earned 82.50 in interest. What was the principal?
asked by karen 
physics
a machine gun fires 10 bullets persecond into a target. each bullet weights 20 gm and had a speed of 1500 m per second .find the force neccessary to hold the gun in posotion?
asked by sunny 
prealgebra
Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.
asked by nay nay 
physics
A tug of war has started over a popular toy. One child pulls with a force of 2.0*10^1 N[W], a second child pulls with a force of 15N[N] and a third child pulls with a force of 4.0*10^1 N [30 S of E] calculate the net force on the toy
asked by Melissa 
chemistry
Question 46 refer to : 3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l) 4. How many moles of NO can be produced by the reaction of 54.0g of Ag? 5. How many grams of AgNO3 can be produced by recating completely 88.0g of Ag? 6. State the number of grams of
asked by jhong 
physics
A clock has an aluminum pendulum with a period of 1.000 s at 20.3 °C. Suppose the clock is moved to a location where the average temperature is 28.1 °C. (The linear expansion coefficient for aluminum is 2.20 105 °C−1.) (a) Determine the new period of
asked by hania 
CHemistry Question
How many liters of chlorine gas at 1.00 atm and 20ºC will be required to oxidize 167 grams of bromide ions to molecular bromine? A. 13.5 L B. 25.1 L C. 101 L D. 1.72 L E. 50.3 L
asked by M 
math
jack invested $4000 in two accounts. one pays simple interest at the rate of 5% and the other pays simple interest at the rate of 6%. if jack earned a total of $224 in interest in the first year, how much did he invest in each account?
asked by pb 
Chemistry
Above what Fe2 concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 8.03? The Ksp of Fe(OH)2 is 4.87×1017 M3.
asked by Jematormal91 
Algebra 2
I=2V/R+2r Solve for r.
asked by chels 
Physics
A 5.80 kg ball is dropped from a height of 14.5 m above one end of a uniform bar that pivots at its center. The bar has mass 9.00 kg and is 6.40 m in length. At the other end of the bar sits another 5.30 kg ball, unattached to the bar. The dropped ball
asked by Joe 
Finite Math
In a carnival game, the player selects two coins from a bag containing four silver dollars and twelve slugs. (a) Write down the probability distribution for the winnings. (b) Determine how much the player would have to pay so that he would break even, on
asked by Amanda 
trig
Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosAsinA
asked by Piwo 
PROBABILTYSTATS HELP
A product is assembled from 3 components X,Y,Z and the probability of these components being defective is 0.01, 0.02,0.05. i have to find the probability that the assumed product will not be defective? can someone explain to me, how do it? thanks
asked by Taskeen 
Chemistry
For the balanced reaction 2 Na + 2 H2O >2 NaOH + H2 how many grams of Hydrogen are produced if 120 g of Sodium are available?
asked by Henry 
psychology
What is the relationship between zscores and percentages?
asked by Betty 
Chemistry
What is the pH of a saturated solution of lead(II) hydroxide? The Ksp= 4.0 X 1015. a) 4.7 b) 7.2 c) 9.0 d) 9.1 e) 9.3 What should I do to solve for this? Thank you
asked by Sheri 
math
Sal made a map of his neighborhood.According to his map,Sal's house is 6 units away from the grocery store. The grocery store is 5 units away from the coffee shop.The coffee shop is 1 unit from Sal's house.How is this possible?
asked by Bebe 
Algebra2
The area of a rectangular field is x^2x72 m^2. The length of the field is x+8 m. What is the width of the field in meters?
asked by joshua 
Math
List the terms without changing the expression. 21x+21y
asked by Hanna 
disease
Binge Eating Disorder is diagnosed by "experiencing" bingeeating episodes (without purging) more than  time)s) per week for  one,two months two,three months two,six months four, six months
asked by kevin 
math
Below is a sample space for a family with 3 children. BGG stands for the oldest child being a boy, the middle child a girl, and the youngest a girl. Use the sample space to answer the question: How many outcomes are in the sample space? Sample Space BBB
asked by Cheril 
English
Hi, I really need help and I want to do very good on the test! I have to translate poems which are written by Native American writers and which describes their way of life. However, I am having a hard time understanding their meanings and they are a lot.
asked by Ely 
math
The Downtown Theater has 1 ticket window. In how many ways can 2 people line up to buy tickets?
asked by Cheril 
finance
Wheel Industries is considering a threeyear expansion project. The project requires an initial investment of $1.5 million. The project will use straightline depreciation method. The project has no salvage value. It is estimated that the project will
asked by Anonymous 
Physics grade 12
A horizontal beam of alpha particles are injected with a speed of 1.3x10^5 m/s into a region with a vertical magnetic field of magnitude 0.155T. A How long does it take for an alpha particle to move half way through a complete circle? B If the speed of
asked by John 
Algebra 2
two resistors are connected in parallel. Their resistances are 6 ohms and 10 ohms. What is the resistance, (R), of the combination? R=ohms?
asked by Nancy 
engineering mechanics
An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick and is constructed from steel (density=7850 kg m3) its moment of inertia is 0.156 kg m2 about its axis of rotation a) calculate the mass of the flywheel b) calculate the flywheel's radius
asked by dmkp 
MATH
Weekly demand for eggs stocked by Waumini grocers is normally distributed. The mean is 500 trays and standard deviation is 100 trays. How many trays should be available for a week if waumini wants to ensure that the probability of running out of stock does
asked by Anonymous 
Trig Help Please!!!
Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 95 and c = 137(angle B=38). Round your answer to two decimal places.)
asked by Adam 
physics
An object is placed in front of a convex mirror with a 22.6cm radius of curvature. A virtual image half the size of the object is formed. At what distance is the object from the mirror? Take a positive answer to be in front of the mirror, and a negative
asked by Ashley 
Physics
A stiff uniform wire of mass M_0 and length L_0 is cut, bent, and the parts soldered together so that it forms a circular wheel having four identical spokes coming out from the center. None of the wire is wasted, and you can neglect the mass of the solder.
asked by Joe 
physics
Can a body have a charge of 4.8*10 20 c
asked by Anonymous 
chemistry
a cheetah can run 112 kilometers per hour. Express this speed in mph. round to the nearest mile
asked by ginnie 
physics
Two spheres with charges of 4.00nC and 3.00nC are placed 0.500m apart. At what point between the two charges must the third charge of 2.00cN be placed so that the net electrostatic force acting on this charge is zero?
asked by Megan 
math
Below is a sample space for a family with 3 children. BGG stands for the oldest child being a boy, the middle child a girl, and the youngest a girl. Use the sample space to answer the question:What is the probability (in simplest form) that the middle
asked by Cheril 
writing skills
the first challenge to the confidence of these amateur renovators come with buying tools or equipment
asked by bouba 
chemistry
3Ag(s) + 4HNO3(AQ) = 3AGNO3(aq) + NO(g) + 2h2o(l) How many grams of AgNO3 can be produced by recating completely 88.0g of Ag? please show me the step.. thank you
asked by jhong 
Physics
In the hydrogen atom the radius of orbit B is sixteen times greater than the radius of orbit A. The total energy of the electron in orbit A is 0.378 eV. What is the total energy of the electron in orbit B?
asked by DCM 
Alebra
For which value of x is the expression 3/x2 undefined?
asked by George wang 
english
What is the gerund phrase and noun function of the gerund in these sentences: 1.Brett earns his income by repairing cars. 2.I enjoy playing the piano. 3.Her favorite pastime is entertaining friends. 4.She is successful in mimicking others' voices. 5.He
asked by cj 
calculus
find the volume of the solid bounded above by the surface z=f(x,y) and below by the plane region R f(x,y)=2x^2 y;R is the region bounded by the graphs of y=x and y=x^2
asked by sol 
Geometry
DKLM is a rhombus. If AM = 4x, AK = 5x3, and DL = 10, find x.
asked by Rye 
psychology
What is concepts of reliability and validity as they pertain to psychological testing? I have a test comming up and I am confused by the concepts of reliability and validity as they pertrain to psychological testing. Can someone explain this to me? thank
asked by Sarah 
Analyzing Financial Statements
EAT AT MY RESTAURANTCASH FLOW With this case, we review the cash flow of several restaurant companies. The restaurant companies reviewed and the yearend dates are as follows: 1. Yum Brands, Inc. (December 30, 2008; December 30, 2007) "Through the five
asked by Lissa 
physics
A truck covers m in 8 s while smoothly slowing down to a final speed of 2.8 m/s. (a) Find its initial speed. (b) Find its acceleration.
asked by david 
Mechanics for Alevel
An object of mass 50kg rests on a rough plane inclined at an angle z to the horizontal. It is supported in this position by a light string parallel to the plane which is attached to the object and fixed to a point at the top of the plane. The string has a
asked by Bob 
Physics sph 212
A person takes in a breath of 0 degrees celsius air and holds it until it warms to 37 degrees celsius. The air has an initial volume of 0.700L and a mass of 9.00*10^4kg. Determine a. the work done by the air on the lungs if the pressure remains constant
asked by Tiera 
Algebra 2
Find an equation of the ellipse satisfying the given conditions. Center at (2,3) with major axis of length 8 and parallel to the y axis, minor axis of length 2. I don't understand how you get the formula for this. some help please
asked by Anonymous 
algebra
Participants in a psychology experiment were able to memorize an average of M words in t minutes, where M = −0.001t3 + 0.1t2. Use the following graph.Estimate the number of words memorized after 14 min. m 20 / 18 / 16 / 14 / 12 / 10 / 8 / 6 / 4 /
asked by j 
Science
Janice found two sea shells when she went to the beach. They appear to be almost the same size, but they have different shapes. How could she figure out if their volume is the same? A)Weigh each one on a scale to see which is heaviest. B)Fill each one with
asked by Sara HELP ME PLEASE 
physics
If the coefficient of kinetic friction is 0.25 , how much horizontal force is needed to pull each of the following masses along a rough desk at a constant speed? A) 25 kg
asked by Melissa 
Business studies
Frank owns a soda fountain and sells milkshakes. he sells 50 milkshakes per day for $5 each. his daily total cost is $290, of which $30 is fixed cost. What can you say about Franks short run decision regarding shut down and long run decision regarding
asked by Silvia 
Physics
A small mass attached to a spring oscillates with simple harmonic motion with amplitude of 70mm,taking 13 seconds to make 40 complete oscillations.Calculate the following showing steps; a.Its angular ferquency b.Its maximum speed c.Its maximum acceleration
asked by Nkamo 
physics
The pressure in each of your car tires is 2.00 105 Pa. The mass of your car is 1610 kg. Assuming that each of your tires bears onequarter of the total load, what is the contact area of each tire with the road?
asked by Michelle 
Chemistry
How many moles of C2H2 are produced by 3.5 mol CaC2?
asked by Elsa 
alg2/trig
If 4x^2+9=kx, what value of k will produce equal roots? the answer is 12 but i don't understand how you get it, please help!
asked by lisa 
PreCalc Helppp!!!
Find the indicated angle è. (Use either the Law of Sines or the Law of Cosines, as appropriate. Assume a = 110 and c = 136 (angle B=38) Round your answer to two decimal places.)
asked by Mike 
math
The sum of the 3 angles of a triangle is 180 degrees. In triangle PQR, the largest angle is twice the size of the smallest angle. The remaining angle is 16 degrees larger than the smallest. Write and solve an equation to find the size of the smallest angle
asked by jorge 
Chemistry
1. How many molecules does 36.0 grams of water represent? Change the following masses to number of particles by: A) dividing by the molar mass to get the number of moles, and then B) multiplying number of moles by Avogadros number
asked by Elizabeth 
Chemistry
An structural isomer of bromobutane (C4H9Br) can be hydrolysed using aqueous sodium hydroxide to produce butanol. This can be represented by the following equation: C4H9Br(l) + OH(aq) C4H9OH(l) + Br(aq) This reaction was investigated experimentally
asked by JJ 
Government
The owner of a clothing factory wants to make more winter coats. According to the law of increasing costs, what will happen next? A. The factory owner will have to give something up to make more costs. OR B. The cost of making winter coats will stay the
asked by Anonymous 
Math
Divide: the reduce to lowest terms 1 4/7 divided by 4/10
asked by Anonymous 
Trig.
Find to the nearest degree, all values of ө less than 360˚ that satisfy the equation 2tan^2θ2tanθ=3
asked by Rach 
math
Factor 21x + 35y
asked by geo 
CHemistry Question (pv=nrt)
How many liters of chlorine gas at 1.00 atm and 20ºC will be required to oxidize 167 grams of bromide ions to molecular bromine? A. 13.5 L B. 25.1 L C. 101 L D. 1.72 L E. 50.3 L
asked by M 
Chemistry; AcidBase Equilibrium
You are farming and loving life. You love the smell of ammonia and apply it to your field as a fertilizer. However, you have a pond which you use to water your crops and for your llamas drinking water. The ammonia you spread on your field washes into the
asked by Anonymous 
engineering mechanics
A car is travelling on a banked circular racetrack, Given that the track is banked at an angle of 16degree to the horizontal and the radius of the track is 50 metres and there are no friction forces present a) draw a free body diagram of the car
asked by dmkp 
HCA322: Health Care Ethics & Medical Law
List and describe the three best and the three worst attributes of Health Care Ethics Committees. Do you agree that the expanding use and power of ethics committees helps foster and ensure ethical standards are upheld in the medical profession? Why or why
asked by Anonymous 
trig
Prove: 1/cos2A+sin2A/cos2A=sinA+cosA/cosAsinA
asked by Piwo 
physics
Determine the magnitude of the force of gravity acting on a 340 kg satellite, 850 km above Earth's surface
asked by Melissa 
math
Which of the following below shows the expression below in simplest form? 2y^2  50/y  5 Is it "C" A. 2(y5) B. 2(x +50) C. 2(y+5) D. 2(y^2 +5)
asked by Jane 
Chemistry 2
A saturated solution of a certain metal(II) chloride has a chloride ion concentration of 0.032M. The Ksp for this compound can be determined to be a) 2.6 X 107 b) 4.1 X 106 c) 1.6 X 105 d) 2.6 X 104 e) 1.6 X 102 I am unsure how to approach this
asked by Sheri 
Chemistry; AcidBase Equilibrium
You are farming and loving life. You love the smell of ammonia and apply it to your field as a fertilizer. However, you have a pond which you use to water your crops and for your llamas drinking water. The ammonia you spread on your field washes into the
asked by Anonymous 
MATH
Assume the aptitude test score are normally distributed; mean is 140 points and standard deviation is 25 points. Within what interval centered at the mean will 95% of the scores lie?
asked by Anonymous 
calculus
find the average value of the function f(x,y)=xe^y over the plane region R is the triangle with vertices (0,0), (1,0) and (1,1)
asked by Anonymous 
math
There are 15 students in Marcelo chess club. There are 2 times as many boys as girls . Howm many girls are in the club?
asked by nick 
trig
simplify cox^2xcos^4x
asked by BOB 
physics
A jet fighter lands on an aircraft carrier. m = 35,000 kg, the force of deceleration is 43,000 N, and the initial velocity is 27 m/s. What distance does it travel during the first 7.5 seconds of deceleration?
asked by jh bjh 
math
A boat in calm seas travels 13km east and 35 km north. Find the distance and direction of the trip, relative to to the north.
asked by nicole 
Math 1200
a complex has 205 apartment units. When the rent is $635 per month all 205 units are occupied.Assume that for each $75 increase in rent 15 units becomes vacent. Assume that the number of occupied units is a linear function of the rent. Each occupied unit
asked by Andrew 
chemistry
if 20g of sugar are added to a beaker filled with 200g of water what is the percent composition of the solution ?
asked by Ryan 
Chemistry
when 0.20 mole HF is dissolved in water to a volume of 1.00 L, 5.8% of the HF dissociates to form F (aq). What is the equilibrium constant for the reaction ? HF(aq) +H2O(l)  F (aq) +H3O+ (aq)
asked by emily 
Pre Calculus
Determine all discontinuities that exist on the graph of y = f(x) shown below. Please show your reasoning by justifying your answer with the conditions of continuity. If there is a discontinuity, identify it as removable or nonremovable.
asked by Nanda 
math
Megan is standing 12 feet away from a basketball hoop, which is 10 feet in the air. How far is it from Megan's feet to the hoop? Round your answer to the nearest tenth.
asked by Kason 
math
if 11% of the population is left handed, what is the porbability that as least one of the first 20 strangers you meet is left handed
asked by liz 
chemistry
If the heat of combustion for a specific compound is 1460.0 kJ/mol and its molar mass is 55.75 g/mol, how many grams of this compound must you burn to release 900.20 kJ of heat?
asked by catey 
psychology
Evaluate effectiveness of goal setting and drive theories in explaining behaviors
asked by Kylie 
algebra
Coach Willful believes that the best sixthgrade soccer players are 58 inches tall, and he will accept his ideal as players on his team. why does the equation:58h
asked by Matt 
trig
if sin2x=3sin2y, find 2tan(xy)
asked by afdafd 
science
The global water cycle provides renewable water, but a number of factors affect how much freshwater is available for human consumption. Describe these factors and circumstances. When do human interventions in water availability pose serious problems to
asked by Anonymous 
English
He checked out the books yesterday from the library. (Is this correct? What is the opposite of 'checked out'? Can we use 'checked in' as the opposite?)
asked by rfvv 
physics
Qualitatively explain how you would expect the kinetic energy to change as a glider slides down an inclined air track, where friction is negligible.
asked by Kristina 
physical
A block with mass m1 on a plane inclined at angle ƒÑ to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is Us ƒÝ s and the coefficient
asked by Lebza 
tax  HELP
In which of the following situations would a taxpayer be better off to take the foreign taxes paid as an itemized deduction rather than as a foreign tax credit?
asked by Billy 
Maths
Express 175.0cm3 in litres (dm3)
asked by May 
Algebra 2
I=nE/R+nr Solve for R. Simplify
asked by chels 
english
I'm writing a english paper about A Tale of Two Cities to show why/how the topic of law/corruption/power matters from the way Dickens uses it in the text. I am trying to write my intro, but I am having trouble. All I have so far is an attentiongetter, a
asked by jenna 
ENG 227
In this assignment, students will analyze two possible career choices, and then write a formal analytical report effectively presenting a recommendation to pursue one of the careers. This project has two parts: Part 1, the Table of Contents and
asked by geniaj 
trig
If sin A= 1/4 and sin B= 1/2, with A in QII and B in QIV, find tan(A+B)
asked by Chase 
physics
Qualitatively explain how you would expect the potential energy to change as a glider slides down an inclined air track, where friction is negligible.
asked by Kristina 
physics
what relationship do you expect between the change in the kinetic energy and the change in the potential energy?
asked by Kristina 
Government
If you choose between two summer jobs, what is the one you do not choose called? A. opportunity cost B. decision at the margin OR C. opportunity at the margin
asked by Anonymous 
English
Here is the last part concerning the narrative technique. Thank you. 1) Pamela is (was) written in epistolary form, as a “series of familiar letters” written by the protagonist and some also by her parents. 2) Richardson places himself in the role of
asked by Matthew 
English
I left out a few sentences. Thank you. 1) Then, the characters introduce one another using letters instead of speech, and the action is made up by a series of scenes with no general summaries. Another feature is its immediacy. 2) As stated by Richardson
asked by Matthew 
English
for my compare contrast essay i not know how to add hook in introduction i start out like this The short story, " the yellow wallpaper, by gilman and the movie 'a bea utiful mind directed by ron howard be successful in portraying people with mental
asked by Mohammad 
English
i need help with questions of this story please How to Live to Be 200 by Stephen Leacock Twenty years ago I knew a man called Jiggins, who had the Health Habit. He used to take a cold plunge every morning. He said it opened his pores. After it he took a
asked by Mohammad 
calculus
find the volume of the solid bounded above by the surface z=f(x,y) and below by the plane region R f(x,y)= 42xy; R{(x,y)0
asked by sol 
science
a solution is 40% in NAOH. calculate the mole fraction of NAOH if it is an aqoues solution
asked by Neeraj 
math
how many solutions exist for the following system 3x6y=12 and 2x4y=7
asked by shona 
CONDITIONAL PROBABILITY
65% of the employees in a firm are graduates and 35% did not receive any graduate trainig. Among the graduates, 40% have an experience of less than 10 years. Similarly, 18% of the non graduate emplyees have an experience of more than 10 years. The first
asked by PALLAVI 
physics
Consider a body falling through the air. The force due to air resistance is given by, F(air)=CAv^2, where C is the coefficient of air friction, A is the area facing the direction of the motion, and V is the velocity of the object with respect to the air.
asked by jim 
Math
a motorboat can go 24 miles downstream in the same amount of time that it takes to go 12 miles upstream. The boats speed in still water is 12 mph. What is the speed of the river? mi/hr?
asked by Nancy 
Algebra 2
A resistor has a resistance of 15 ohms. What size of resistor, (r2), should be connected in parallel with it to obtain a resistance of 7 ohms. Use 1/R=1/r1+1/r2. r2= ohms?
asked by Nancy 
Chemistry
During the synthesis of Ferrocene, deprotonation of cyclopentadiene is carried out using 1,2dimethoxyethane (DME). If the deprotonation is carried out using MeOH, will the reaction be faster or slower? Why?
asked by John 
PHI 103 Informal Logic
Write two arguments in English, one in the form of modus ponens and one in the form of modus tollens. Then, write the arguments in symbols using sentence letters and truthfunctional connectives. (If your computer does not have all the symbols needed, use
asked by Minne 
social studies
Choosing two famous Americans who lived during the period 1820–1860 Researching the two people you chose Analyzing your research Writing a dialogue between the two famous Americans
asked by kathy 
Calculace
Find the derivative of h(x)=7lnx^4 h'(x)=???
asked by ASB 
Chemistry
What is the relative formula mass of 2Cu(NO3)2? I could do it if it was just Cu(NO3)2 but I don't know how you deal with the brackets when there is also a big number in front?
asked by Lucy! 
Physics
If the critical frequency of a lowpass filter is 5 kHz, what is the filter bandwidth?
asked by Bert 
economics
I am completely stuck on these two questions. I have read my chapter, but I am still doubting that I got the answers correct. 1.A decrease in aggregate demand causes a decrease in ______ only in the short run, but causes a decrease in ______ in both the
asked by Joy 
Engineering
A certain OTA with a transconductance of 5000 µS has a load resistance of 10 kÙ. If the input voltage is 100 mV, what is the output current? What is the output voltage?
asked by Bruce 
algebra2
Solve this formula for m. simplify your answer. S=H/m(ab)
asked by Nancy 
Algebra
y(3y7)/7 divided by(20/14)+5/2y
asked by Jay 
Science
Identify 5 different materials that you encounter or use on a daily basis, and identify a mineral that is mined to supply each of those materials.
asked by Kelly 
Algebra 2
(17) write each function in vertex form (810) write each funtion in standard form? 1) Y=x^2+3x10 2) Y=x^29x 3) Y=X^2+x 4) Y=x^2+5x+4 5) Y=4x^2+8x3 6) Y=(3/4)x^2+9x 7) Y=2x^2+2x+1 8) Y=(x3)^2+1 9) Y=2(x1)^23 10)Y=3(x+4)^2+1
asked by Angel 
Trig.
What is the trigonmetric fact for sin 3.14/8?
asked by Randy 
healthcare
what ethical issue may arise when caring for someone in palliative care?
asked by Lisa 
math
If you have 10 orange marbles and 5 blue marbles in a bag how many times will you pick up the orange ones in 60 tries?
asked by Anonymous 
English
1. He bought him a cooking book. 2. He bought him a cookbook. (Which one is correct, 'cooking book' or 'cookbook'?) 3. Who wrote the song to her? 4. Who wrote the song for her? (Do we have to use 'to' or 'for'? Are both OK?)
asked by rfvv 
french
I am doing a presentation on the efficiency of appliances. I am going to be comparing the past and the present and then France and the US. Do you guys know of any good websites that would talk about any of this. All I can really find is different brands of
asked by rebekah 
calculus
use a double integral to find the volume of the solid z= 4x^2  y^2 y= 2x + 2
asked by Anonymous 
English
1. I especially liked the acting of the main actor and special effects. 2. I especially liked the music and the beautiful scenery in the movie. 3. I especially liked the acting of the main actor and the main actress. 4. I especially liked the roles of the
asked by rfvv 
American History
In Virginia, colonists who could pay their way across the Atlantic were granted 50 acres of land to lease for a modest rental fee. The term for such an arrangement was called
asked by Chrissty 
Biology
I'm learning about chromatography and photosynthetic pigments. My question is "how can we measure the light absoptive characteristics for a leaf extract?"
asked by Jill 
English
i need to fix this sentence "Stop or I'll block you!" the boy yelled. I replace block with deter instead because it be stronger word but teacher say that it not tell her anything but that i just read the definition of deter. i not get what she mean by
asked by Mohammad 
How get caramel in caramilk bar
my sister have this question for biology how they get caramel into caramilk bar? she think the inject it in there, but she want to know how they do it.
asked by Mohammad 
Physics
A particle with a charge of 4.50x 10^10 C and a mass of 6.6x 10^18 kg is placed between two oppositely charged parallel plates with a voltage of 9.00x 10^5 V. The particle is injected at the negative plate with an initial speed of zero. What is the
asked by Marie 
chemistry
when using the VSEPR Theory what is the shape of a molecule that has two bonded atoms and no lone pairs
asked by carrie 
us/101
How do you think collaboration fosters a critical thinking? How might the two work together in your academic and personal life?
asked by poppyseed 
criminology
Hello, I am writing a term paper on Ted Bundy and Danny Rolling and I not sure of some of the answers for the paper. One of the questions is what did the Police do in both case to protect the students during the time of the murder and another question is
asked by rainy 
math
suppose you write each letter of your first and last on a separate index card and select one letter from each name without looking.Find the probability of each event.
asked by i dont want to say 
Alcohol in Sports
How you can evaluate the performance of the institutional arrangements of alcohol consumption among studentathletes in intercollegiate sports? What are the pros and cons of this criteria?
asked by Max 
Tech Math 1b
Suppose that a hot air balloon moving due east at a speed of 15 mile per hour (mph) and at a constant altitude of 100 feet passes directly overhead. Thirty seconds later, what is the distance between me and the balloon?
asked by Dexter Gibons 
calc
A____________B 9 miles is between A and B? at 3pm Andy began travelling South at a rate of 4mi/hr from point A at the same time Bill began travelling West at a rate of 5mi/hr from point B to A both stop wlking when Bill reaches point A What time will the
asked by angel 
Chemistry
Given 3.90mL of 1.80M HCl diluted to .520L, whats the pH?
asked by Alex 
Chemistry
How many cm3 are there in 1.0 litre?
asked by May 
physics
what relationship do you expect between the change in the kinetic energy and the change in the potential energy?
asked by Kristina 
organizational communication
What are some values of other cultures that might enhance organizational cultures, customer service, sales and marketing, and health care?
asked by Anonymous 
11th grade algebra 2
(17) write each function in vertex form (810) write each funtion in standard form? 1) Y=x^2+3x10 2) Y=x^29x 3) Y=X^2+x 4) Y=x^2+5x+4 5) Y=4x^2+8x3 6) Y=(3/4)x^2+9x 7) Y=2x^2+2x+1 8) Y=(x3)^2+1 9) Y=2(x1)^23 10)Y=3(x+4)^2+1
asked by Angel 
Chemistry
Given 3.90mL of 1.80M HCl diluted to .520L, whats the pH?
asked by Alex 
math
Referring to the figure, think about first picking a card and then rolling the die. Give the probability in simplest form. P(A, 1) = ____ i am confused with this problem.. please help?
asked by Cheril 
calc
Let f(x)=x^33x^2 find the absolute maximum value of f(x) on the interval [1,4]? 22 hours ago  3 days left to answer
asked by angel 
reading
In order to change information from useless facts into information you can absorb and retain, you should do which of the following
asked by keisha 
math
Referring to the figure, think about first picking a card and then rolling the die. Give the probability in simplest form. P(A, 1) = ____ the figure has 1 A,2 B, 3 C, and a 6 side cube. i am confused with this problem.. please help?
asked by Cheril 
SADE C
Will someone please help me with finding three references for the ManovoGounda St Floris National Park property?
asked by BIO/100 
Mathalgcalc
x^(1/7)=(1/2) Please help the example given was x^(1/7)=(1/5) so that solved x=78,125. but i have no idea what to do thanks!
asked by Rochelle F 
Math
What is the difference between the interst on a loan being compounded daily @9% and compounded yearly @ 9%?
asked by Floyd 
trig
if one of a quadratic equation is 1/22i, what is the equation. the other root is 1/2+2I but i don't know how to find the equation
asked by Jess 
Math
The first lap of an auto race is 2000 meters. This 5% of the total race distance. What is the total distance?
asked by Karen 
government
what are the finical role of state, local, and federal government in education
asked by nando 
math algebra 1
find the possible values of b (7,b),(1,3); d= 2radical sign7
asked by carissa 
SOCIOLOGY
what are the inequalities that exists in family??pls help!!!
asked by pallavi 
math
csc2x=2cscsecx
asked by afandi 
english
can some one help me
asked by cj 
Algebra 2
Solve this formula for r. Simplify your answer. E/d=R+t/r Make sure you use parenthesis around any polynomials in the numerator and or denominator.
asked by Nancy 
Algebra
(7/w+2)+(8w2/w^2+2w)(6w/w)
asked by Jay 
kinesiology
what joint does splenius muscle cross?
asked by sarah