Questions Asked on
April 30, 2012

college chemistry
which of the following combinations is not suitable for making a buffer? h3po4 and nah2po4 na2co3 and nahco3 nh4cl and nh3 nah2po4 and na2hpo4 hclo4 and naclo4

physics
Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 11.0 cm and b = 23.0 cm. (Indicate the direction with the sign of your answer. Assume that the positive direction is counterclockwise.)

Geometry
A cone with a radius of 3 inches has a total area of 24 pi sq in. Find the volume of the cone.

math
What is the slope of the line described by the equation below? y  9 = 2(x  8)

physics
An archer locks a 0.20kg arrow on a bowstring. Then the archer exerts an average force of 110N to draw the string back 0.60 m . Assume that friction is negligible . What speed does the bow give to the arrow? If the arrow is shot vertically upward,how high

Math :(
Gil rolls a number cube 78 times. How many times can he expect to roll an odd number greater than 1??

chemistry(college)
A student reacts benzene,C6H6. with bromine. Br2. in an attempt to prepare bromobenzene. C6HSBr : C6H6 + Brl··_·_> C6HSBr + HBr (a) What is the theoretical yield of bromobenzene in this reaction when 60.0 g of benzene reacts with 60.0 g Brl? b) If

trig
What is the exact value of 11pi/8? (with steps please) :)

Physics
a 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7 gram ball. The cannon, car, and ball are moving forward with a speed of 1.27m/s. The cannon is ignited and launches a 52.7 gram ball forward with a speed of 75m/s. Determine the

algebra 2
write an explicit formula for the sequence of 1/2, 3/7, 1/3, 5/19, 3/14

Economics
Why does a government place price ceilings, such as rent control, on some "essential" goods? I choose C am I right? A. to prevent the development of a black market B. toencourage an increase in supply of necessary items C. to limit the impact of

math
Evaluate the expression 8a + b for the given variable. b = 3a – 2

chemistry
which of the following is not spontaneous process at 25 degrees celsius and 1 atm pressure? ice melting iron rusting salt dissolving steam condensing water boiling

A&P II
Organism A has more juxtamedullary nephrons than organism B. Which of these organisms could concentrate urine more effectively and why?

Volume
Find the volume of the given prism round to the nearest tenth if necessary. has 14yd twice on one end and 14yd on the other end and I assume base 27yd.Not sure how to do this one, as I missed the one I tried. possible answers 2,291.5yd^3 2,646.0yd^3

philosophy
How do value judgments cloud discussions of the legitimacy of violence in a political system

Accounting
E69 (a,b) Tiger Golf Accessories sells golf shoes, gloves, and a laserguided rangefinder that measures distance. Shown below are unit cost and sales data. Pairs of Shoes Pairs of Gloves Range Finder Unit sales price $100 $30 $250 Unit variable costs 60

CHEMISTRY
In a coffee cup calorimeter 70.0 mL of 0.100 M AgNO3 and 70.0 mL of 0.100 M HCl are mixed to yield the following reaction. Ag+(aq) + Cl ‾(aq) → AgCl(s) If the two solutions are initially at 22.60°C, and if the final temperature is 23.39°C, calculate

chemistry
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 16.9 g of butane is mixed with 39. g of oxygen. Calculate the minimum mass of butane that could be left over by the chemical reaction. Round your

PH103 imformal logic
The average height of members of the high school basketball team is six feet, three inches. Jerry is on the high school basketball team, so Jerry must be taller than six feet. The argument above is flawed because it confuses (Points : 1) A.Jerry with other

trig
Determine whether the vectors are parallel, perpendicular or neither. 1) v = (4,1), w = (1,4) 2) v = (2,3), w = (4,6) 3) v = (2,3), w = (3,3) Please and thanks!

Chemistry
Neat pure ethanol C2H5OH has an enthalpy of vaporization of 39.3 Kj/mol, and a vapor pressure of 0.308 atm at 50 C. What is the boiling point, at atmospheric pressure of 1 atm, of a solution consisting of 35 G of phenol (a nonelectrolyte hydrocarbon with

chemistry
The relative sweetness of sucralose is 60000. The relative sweetness of sugar is 100. How many grams of sucralose would you need for a solution that has the same sweetness as one made with 2.00g of sugar?

Advanced Algebra
Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.

chemistry
Write ksp for ba3(po4)2 in an aqueous solution

Economics PLEASE HELP!!
Another term for capitalist system is ..? My answer: market economy But at the same time I think it's laissezfaire system!

English
I have to write an essay due tomorrow about King Lear (which I haven't read), specifically about Gloucester and how he's a more tragic hero than Lear because he suffers more and dies wiser. I'm desperate, someone please help.

Religion
What do you think of Pauls responses to the challenges he faced so far in the story? Did he handle it well, did he blow it, did he do about as well as could be expected? He was a child who wanted to be a saint, a bluecollar worker, a devoted servant of

chemistry
Gaseous butane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 16.9 g of butane is mixed with 39. g of oxygen. Calculate the minimum mass of butane that could be left over by the chemical reaction. Round your

dressmaking
A houndstooth(black and white plaid) jacket would work well with which of the following bodylines? A) Straight B)Softstraight C)Softcurved D)curved Im thinking it could be A or B.Need help for this question

geometry
There are 2 red cars and 3 blue cars. The 5 cars contain a total of 12 people. No car has more than 4 people. Every car has at least 1 person. The only cars with the same number of people are the red cars. How many people are in 1 red car?

calculus
3. Your neighbor puts tiger on his flat roof shed. You and another neighbor argue over the ht of the tiger. At a distance of 80 ft from the shed your angle of elevation from the ground level to the top of the shed is 5.74 degree. The angle of elevation to

Chemistry
Given that ΔGrxn>0, how do you explain that some of the borax actually dissolves at 25deg C?

physics
two planets of masses "m" and "M" respectively. have a center to center separation of "R".At what distance from the center of the planet of mass"M" do the gravitational force of planets cancel each other????? help me plzzz??????

business math
John has a credit card with a 18% rate and uses the average daily balance method. His average daily balance was $285.26, he made $6483.76 in purchases and paid $538.08. His previous balance was $367.69. What is his new balance?

Techinacl Communication
what is the art and craft of communicating appropriately and persuasively, it is concerned with the way in which written, oral, and visual information is planned , conveyed and interpreted in particular contexts

Chemistry
How do you prepare 2% Cu S04? How does this solution differ from 2M CuS04? I am stumped. Thank you. Deb

S.S
1. Which resource makes up a quarter of Chile's exports? (1 point)fruit fish copper silver 2. Chilean produce is free of many common plant pests because most farming regions are protected by the (1 point)Atacama Desert. Andes Mountains. Amazon River.

finance
a) Compute the future value of $1000 at 10% compounded annually for 6 years.

math
A rectangle with sides parallel to the coordinate axes is inscribed in the ellipse x2/a2 + y2/b2 = 1: Find the largest possible area for this rectangle.

math
evaluate (2 ^4  3) the 4 goes with the whole problem

ALGEBRA
If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2+9 x+20

chemistry
how many grams of NaOH would be needed to make 896mL of a 139 M solution

3 grade english ms sue
SEQUENCE OF EVENTS THE SEQUENCE OF EVENTS IN A STORY IS THE ORDER IN WHICH EVENTS HAPPEN. clue words, such as first,next,then, and finally are often used to signal the sequence of events. dates and times can clues. sometimes, no clue words are used at all.

Math  Urgent!!!
Write the equation of the hyperbola for which the length of the transverse axis is 6 units long anf the foci are at (0,5) and (0,5). Someone please help me with this question. Thanks in advance.

CHEMISTRY
0.15g of sodium hydroxide (NaOH) pellets are dissolved in water to make 3.0L of solution. What is the pH of this solution?

math
"central park is 5 meters longer than it is wide. The area is 2250 square meters. find the length of the park"

Math
Round 52.23 (with a repeater over the .23) to five decimal places?

Physics
The mass of a rocket car plus fuel is 2,000kg. The rocket car starts from rest. The engine expels fuel(in the form of exhaust) over a period of 8 seconds. The exhaust has a velocity of 1,000m/s due west, and the velocity of the rocket car after 8 seconds

math
caleb and winona both travel by car to their friend's home. The distance winona traveled was 124 miles less than twice the distance caleb traveled. If winona traveled 628 miles, how far did caled travel?

Accounting
Spencer Company manufactures and sells three products. Relevant per unit data concerning each product are given below. Product A B C Selling price $9 $12 $14 Variable costs and expenses $3 $9.50 $12 Machine hours to produce 2 1 2 Compute the contribution

health
yesterday, when i ate chocolate cereal dry, it taste good, but when I ate the chocolate cereal with milk, after me and my sister finished the cereal, our stomach started to hurt. the chocolate cereal brand is KRAVE. its a new brand.

English
Has anyone read the poem the "Passenger Pigeon" by Paul Fleischman? This poem is a concrete poem and I need to answer the question because of the way the words are laid out, what do they picture? Please help thanks

Chemistry
Which of the following compounds contains 57.5% sodium by mass? *NaI *NaOH *NaHCO3 *NaSO3

Chemistry
How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.20? Assume no volume change. Ka of HCOOH= 5.010^4

Math
Arman walks to the train station at 5 Km/h. He misses his train by 1 min. If he had run at 10 Km/h, he would have had 2 min to spare. How far is it to the station?

Statistics
The author’s of the article “Perceived risks of Heart Disease and Cancer Among Cigarette Smokers” expressed the concern that a majority of smokers do not view themselves as being at increased risk of heart disease or cancer. Because of this, the

chem ll
How many grams of formic acid, HCOOH, must be added to 0.270L of 0.180M sodium formate, HCOONa, to yield a buffer solution with a pH of 4.20? Assume no volume change. Ka of HCOOH= 5.010^4

english/check please
Find the independent clauses and the dependent clauses.Write wether it is complex or compoundcomplex 1)Mr and Mrs Johnson play golf(ind) when the weather is warm.(dep)complex 2)What I would like is a vacation. independent,complex 3)Alicia works at the

physics
A chair lift takes skiers to the top of a mountain that is 320 m high. The average mass of skiers complete with equipment is 85 kg . The chair lift can deliver three skiers to the top of the mountain every 36 s Determine the power required to carry out

math
For the sequence 3,8,15,24,35,48,63 write an equation for t(subn) in terms of n.

SOCIAL STUDIES PLZZ HELP
1. In the 1950s, in order to develop Brazil's interior, the government moved the capital from Rio de Janeiro and built a new one called (1 point)Brasilia. Belem. Salvador. Manaus. 2. All of the following are threats to the rainforest EXCEPT (1

CHEMISTRY
Consider the following cyclic process carried out in two steps on a gas. Step 1: 41. J of heat is added to the gas, and 20. J of expansion work is performed. Step 2: 60. J of heat is removed from the gas as the gas is compressed back to the initial state.

Maath:)
Sam is going to plant a rectangular flower garden next to his house. There will be a fence on three sides of the garden( fencing is not necessary along the houe). The area of the garden is to be 1,000sq. ft., and he has 90 feet of fencing available.

cal
As a hardworking student, plagued by too much homework, you spend all night doing math homework. By 6am, you imagine yourself to be a region bounded by y=5x2 x=0 x=3 y=0 As you grow more and more tired, the world begins to spin around you. However,

social studies
Different labor systems and cultures predominated in various regions of British America. How did the economy of each region help determine its labor systems and customs?

Stat
6% of american drivers read the newspaper while driving if 300 drivers are selected at random find the probability that between 15 and 25 say they read while driving

Math
Maggie's surprise gift weighs between 8.48 grams and 11.25 grams. Which of these weights could be the weight of the gift? 8.19 Grams 8.75 grams 11.47 grams 11.75 grams ~~~~~~~~~~~~~~~~~~~ How would I show my work on paper for this?

Social Studies 7R  HW Help!
Covered Bridges How did covered bridges help travelers?

PreCalc/Math
Given cos x=2/3 and 3pi/2

math
pepi's pizza has a choice of thin crust or thick crust. The available toppings are mushrooms, onions, pepperoni and sausage. Make a tree diagram showing the possible outcomes for a 1 topping pizza.

Chemistry
A geologist removes a sample of water from a lake in Nevada where the water level has been slowly dropping over time. The sample is found to be 0.02M in borax. The lake is circular in shape and is currently 500 meters in diameter and 50 meters deep. Using

trig
(10√2, 10√2), find te magnitude and direction angle of the vector, measure the direction angle in [0, 360). Please help!

Biology
What are the similarities of the evolution of birds on hawaiian islands and the finches on the Galapagos?

Science
Jessica and David spotted birds at the neighborhood park where they had a bird feeder set up. Why are the birds a consumer in this habitat? A. They are eaten by other animals B. They need food to survive C. The birds make food of their own

math
use the distributed property to rewrite (a+9)6= simply your answer

phi 103
If the word "should" appears in a sentence, that sentence will always involve an ethical claim

Algebra 2
What is the solution to the rational equation x / 2x + 1 + 1 / 4 = 2 / 2x + 1?

Physics
If you do 12 J of work to push 0.001 C of charge from point A to point B in an electric field, what is the voltage difference between points A and B?

physics
A cup with refractive index n2 = 1.8 has outer radius b = 6.0 cm and inner radius a = 4.0 cm. It is filled with a liquid with refractive index n3 = 1.3. In the surrounding medium with n1 = 1.0,a ray of light travels along a trajectory that is at a

English 4
In "Sir Patrick Spens'" one example of foreshadowing is:

Science
Why do all goldfinches have some yellow feathers? A. Goldfinches change their feather color to fit their habitat B. Goldfinches inherit their feather color from their parents C. Goldfinches learn their feather color from other goldfinches

consumer math
You owe $1,350.00 on a credit card with a 14.25% APR. You pay $300.00 at the beginning of the month. How much interest do you save by paying at the beginning of the month versus at the end of the month? second part: Imagine you put the $300 in a savings

Math!!!
find the value of k such that when 2x^3 +9x^2+x15 is divided by x+5, the remainder is 0.

physics
Sound waves have which of these properties? A) Reflection.B) All of these.C) Refraction.D) Interference.E) Capable of producing beats.

geography
why communities have an interest in the urban growth and decline

physics
Three resistors, 12 Ù, 18 Ù and 36 Ù, are connected in parallel. What is the equivalent resistance

Precalculus
Determine the values of the trigonometric functions of t if P(t) lies in the second quadrant and on the line y = −2x.

Circuits
In Circuits lab, we had to construct different types of operational amplifiers. The inverting and summing amplifiers produced similar output voltage to the calculated ones but were not negative. I was just wondering why they didn't reverse the sign in the

Algebra/%%$#!!!
F(x)=1/4 (x+7)^2+7 Looking for the vertex and the max or min for the above..? f(1/2)=19/2, did I find the vertex? (6x^25) ( x^76) using FOIL. I came up with 6x^95x^736x^2+30 please tell me I'm right if not what the heck did I do? Thanks...

physics
two planets of mass "m" and "M" respectively. Have centre to centre seperation of "R" . At what distance from the centre of the planet of mass "M" do the gravitational force of planets cancel each other??????? plz urgent help me?

math
Posted by weloo_volley on Wednesday, April 25, 2012 at 12:16am.heeeeelp meeeee ... (a)find antiderivatives for the following functions : (i) e^5x sinh3x + 4x+6/x^2+3x+5 . (ii) �ã3x(x^22/x+1). (b)Evaluate the following integrals over the given

math
5/22  1 /41 then reduce

math
hilp meeee trying .... Consider the two parabolas :y1=2x^23x1 and y2=x^2+7x+20. (a) Find the points of intersection of the parabolas and decide which one is greater than the other between the intersection points. (b) Compute the area enclosed by the two

math
Consider the function f(x)= cos3x 4sin3x. (a)Find the equation of the line normal to the graph of f(x) when x= pie/6 . (b)Find the x coordinates of the points on the graph of f(x) where the tangent to the graph is horizontal. (c)Find the absolute extrema

phi 103
strongly supported claim in science should be regarded as?

English
If anyone has read/heard about the books "The Namesake by Jhumpa Lahiri" and "The Writing on my Forehead by Nafisa Haji", can you please help me come up with a nice comparative thesis? A topic/theme I have for both is identity. But can't think of good

Physics
A 20lb ball is 1 ft. in diameter and has a angular velocity of 300 rpm when it is 2 ft. away from the plate. The coefficient of rolling friction between the surface and the ball is μs = 0.3. It strikes the 1ft. high, 10lb plate that is held in place by

math
Consider the function f(x) = 2x 2 + 1. Find the equation of the tangent to the graph of f(x) at x = 2 (when calculating f'(2, use first principles)

math
Solve the following system using substitution. Write the solution as an ordered pair, (a, b). b = a – 4 2a – 3b = 2

Computers
What is the pseudocode of a square with side X, A = X^ 2; circle with radius X, A = 3.14 * X 2; equilateral triangle with side X, A = Sqrt (3)/4 * X^2

calculus
The volume of grains in a silo at a particular time (measured in hours) is given by V (t) = 4t(3t)m^3 Find the rate of change of the volume of grains in the silo from first principles (using the definition of the rate of change)

trig
At rest, the human heart beats once every second. At the strongest part of the beat, a person's blood pressure peaks at 120mmHg. At the most relaxed part of the beat, a person's blood pressure drops to 80mmHg. Supposing that t = 0 corresponds to the peak

english
few lines on my home is the best

statistics
Whats the difference between creating a z score from a single score and creating one fron a sample mean?

calculus
A particle moves on the xaxis so that its velocity at any time t is given by v(t) = sin 2t. At t = 0, the particle is at the origin. a)For 0 ≤ t ≤ π, find all values of t for which the particle is moving to the left. b)Write an expression for the

math
Write and solve the differential equation that models the verbal statement. Using k for the constant of proportionality The rate of change of N with respect to s is proportional to 626 − s. dN/ds= N=

trig
Find the component form for vector v with the given amplitude and direction angle theta. v=20.6, theta=102.5deg

physics
This question has me stumped because I am not really sure about the capacitor. "Imagine a free electron and a free proton held midway between the plates of a charged parallel plate capacitor. When released, how do their accelerations and directions of

physics
If I throw a baseball horizontally off of a 100m tower at a velocity of 3.33m/s how long will it take the ball to fall to the ground?

math
Jon and Remy were in a car race. When Jon finished the race in 45min, Remy had only driven 2/3 of the distance. Remy's average speed for the race was 50m/min less than Jon's. a) Find the distance of the race. b) What was Remy's speed?

physics
A 50kg barrel of Bud is rolled up a 10 meter ramp to the back of the truck.The ramp makes a 30degree angle with the ground. What is the potential energy of the barrel at the top of the ramp? How uch work was done against gravity to get it to the top of the

phisycal sciences
Dalton's experiments advanced our understanding of the atom without A. carefully observing and measuring events. B. discovering the internal structure of the atom. C. examining the ratios of elements involved in chemical reactions. D. testing a hypothesis.

physics
An object of mass 5.56 kg is released from rest and drops 2.05 m to the floor. The collision is completely inelastic. How much kinetic energy is lost during the collision.

chemistry 2
The voltaic cell reaction NiO2(s)+4H^+(aq)+ 2Ag(s)>Ni^2+(aq)+2H20(l)+ 2Ag^+ has a E cell= +2.48V. What will the cell potential be at a pH of 5.00 when the concentration of NiO^2+ and Ag^+??? I need to know how to set this type of problem up to solve it

M1 mechanics
A particle of mass 5 kg is being towed at a constant speed of 6 m/s on a rough horizontal plane with coefficient of friction 0.2. At a certain point the towing force is reversed in direction. Find the distance that the particle will travel before coming to

math
Name the point of intersection for the following system, if it exists. 4x – 3y = 3 3x – y = 6

Maath:)
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

math
Simplify 2 3/18 + 5 3/12  4 2/4

computers
how do you make your own website

english /help
label the subject and the verb of each of each clause. Then write whether the sentence is simple or complex. 1)Every afternoon the baseball team practices. subject: the baseball team verb: practices simple sentence 2)When practice is over, the players are

physics
A bullet of mass 11.2 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.01 kg, is subject to no horizontal external forces during the collision with the bullet. After the collision, the block is observed to

Physics
At a certain distance from the center of the Earth, a 4.00kg object has a weight of 1.95 N. Calculate this distance.

History
What are some of the changes that changed America from a Liberal country in the 1960s to a Conservative nation in the 1980s? What events sparked this? I'm guessing Watergate was one. Was the Iran Contra Affair one, or Vietnam? Please give specific

hi i i i i istory
which would be easier to write information about. Because I have to create a brochure about either either the arch, the colosseum, roman roads, and aqueducts. Which invention from Rome would be easier to write about?

Economics
I said C to this question but im not for sure if im right can someone help please? In what way does the Bill of Rights protect individuals' freedom to engage in business activities? A. It recognizes property righs. B. It denies the government the ability

Math
A young Colorado spruce tree is growing at a rate of 20 cm per year. Currently, it is 244 cm tall. A 300 cm tall white spruce tree is growing at a rate of 12 m per year. In how many years will the two trees be the same height? Solve algebraically

math
ABCD is a parallelogram. If AB is equal to 2x + 1 and CD is equal to x + 13, find x.

cal
Find the volume of the solid obtained by rotating the region bounded by y=4x^2,x=1,y=0 about the xaxis.

ALGEBRA
Simplify the expression. (5 x  1)(x**2 + 4 x  3)

social syudies
Why did the U.S. want Florida and how did they acquire it?

ALGEBRA
Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) x2  5x + 5 = 0 x = x =

science
how is the Maunder minimum and the little ice age related events?

Science
What is the function of a cell's nucleus? cell reproduction?

Life Orientation
Identify one environmental factor that cause ill health,accidents,crises, and disasters within South Africa

maths
5 ladies working at the same rate can make 500 curry puffs in 1 hour . How long will 3 ladies working at the same rate take to make 500 curry puffs ? Give your answer as a mixed number .

Chatam County
Jerry posted his grades in English as 85, 87, 96, 100, 85, 99, 93 and 85. What is his median grade?

surface area
Find the surface area of the cylinder in terms of pi. I know the formula is SA=LA+2B, but not sure how to plug in the numbers and get answers. Everytime I try I get wrong answer. The cylinder has I assume radius 8in and height 20in. possible answers

ALGEBRA
Solve the inequality. (Enter INFINITY for infinity and INFINITY for infinity as needed.) 6

MATHS URGENT !!!
5 ladies working at the same rate can make 500 curry puffs in 1hour . How long will 3 ladies working at the same rate take to make 500 curry puffs ? Give your answer as a mixed number .

math
Solve: Eighty people were invited to vote in thr extension club's elections and 9/10 of them voted. How many people voted in the elections?

ALGEBRA
Simplify the expression. (5 x  1)(x**2 + 4 x  3) =

chemistry
calculate the molarity of an acetic acid solution if 83.71 mL of the solutions needed to neutralize103 mL of 1.08 M sodium hydroxide. the equation for the reaction is. HC2H3O2(aq) + NaOH(aq) >Na+(aq) + C2H3)2(aq) +H2O(aq) Please show your work i really

History
Were these events that lead to political and social change in the 1960s until the 1980s? Watergate Iran Contra Affair Vietnam Election of Nixon, and Carter

Economics (PLEASE HELP!!!)
Which type of economic system had been the most effective in promoting economic growth? Why?

Math
Use grid paper to graph the triangle with vertices (1,3) (1,5) (3,4).Then sketch its reflection.

physics
The electron in the Figure is travelling with a speed of 3 106 m/s. (a) At location A, what are the directions of the electric and magnetic elds due to the electron? (b) Calculate the magnitudes of the electric and magnetic elds at A due to the electron,

Circuits
In Circuits lab, we had to construct different types of operational amplifiers. The inverting and summing amplifiers produced similar output voltage to the calculated ones but were not negative. I was just wondering why they didn't reverse the sign in the

to Britney
thanks for your great answer. are you a volunteer helper or a student?

Math Word problems (3rd Grade)
Shondra has 72 roses and 48 lilies. She wants to make 8 bouquets with them, with the same number of each type of flower in each bouquet. How many flowers will be in each bouquet?

English
What are the parts for the sentence "How many players are on a team?"

Math algebra 1
The cost of renting a circular saw at a hardware store is described by the function f(x) = 25x  10 in which f(x) is the cost and x is the time in days. If lewis has $200 to spend, what is the maximum number of days that he can rent a saw if tax is not

phi 103
Which of the following may not qualify as a falsifiable claim? Your luck will improve. Your house will be sold tomorrow. Granite is more dense than sand. Smoking may cause heart disease

Res/342 UoP
Is there stepbystep examples to compute these problems using data analysis (ANOVA) and megastat? Thx Applied Statistics in Business and Economics: o Chapter 11, Exercises 11.24 and 11.30 o Chapter 15, Exercises 15.29 and 15.32

Physics/music
if you stand at one side os a stage with hard parallel side walls 17m apart and make a handclap, how often do the flutter echoes arrive?

Math
I have find the function rule for this problem x=0,2,4,6 y=1,5,9,13

chemistry
calculate the volume of 2.27 M Nal that would be needed to precipitate all the of the Hg +2ion from 166mL of a 2.08 M Hg(NO3)2 The equation for the reaction is 2 Nal(aq) + Hg(NO3)2(aq) > HgI2(s) + 2 NaNO3(aq) Please Help I'm really having trouble

Marketing
I need help coming up with 3 realistic Objectives for NIKE SHOES that would be used on a marketing plan. The objectives needs to be Specific, Measurable, Attainable, Realistic and Time Sensitive.

help help helppppmath
1)Use the definitions sin0(theta) = y/r, cos0(theta) = x/r and/or tan0(theta) = y/x to prove that cot0(theta) = 1/tan0(theta) 2)For all 0(theta) prove: a)cos(t) = 1/sec0(theta) b. sec(t) = 1/cos0(theta)

2nd grade math
4/6 of 18 is?

Probability
a bag contains 9 red marbles and 4 blue marbles. how many clear marbles should be added to the bag so the probibility of drawing a red marble is 3/5?????

Linear Algebra
4 points A,B,C and D are situated in a 3dimensional space. In a certain spot, the coordinates of A, C and D are known: A(1,1,1) C(2,0,1) D(0,3,0) The coordinates of the barycentre of {A,B,C} are: (4/3, 1/3, 4/3). a) Determine the coordinates of point B in

math
Simplify the following expression 8!/4!

math
4.5 m 8 = 5.5 + 4m

Science
One example of a tissue is A.heart B.nucleus C.muscle D.mitochondria C?

Math
What's 12 divided by 5?

math
The mean earnings of four plumbers are 40,250, 45,250,63,600, 125,000 The owner of a plumbing business earns 125,000. Do you think the mean of all four plumbers earnings,which is 68,525, accurately represents what an average plumber earns? What do you

math
how would u figure out the answer for: 4/6 of 18 = ?

Foreign Language
What does " aqui estan" mean I'm Spanish?

Letupu secondary school
In 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community

chemistry
At least how many standard solutions would you need to make a calibration graph, assuming that the graph is expected to be a straight line? Explain your answer. Don't include the data from distilled water in this question.

English Technical writing prelaw
I am writing a mini appellant brief and I have to suport why a university is not liable for the harassment of its two employees a male and female. The female was harassed by another employee by sexual comments the male was harassed by a hostile work

Math
Give example of each function: (a) degree 2; two zeros, the function decreases then increases (b) degree 3; three zeros, the function increases, decreases, then increases (c) degree 3; two zeros, the function decreases, increases, then decreases (d) degree

acc202managerial accounting
need help with problems 1616, 1617 and 1618.

bio
how is the thalamus the sensor regulator for the brain (what are the steps that happen when it receives a stimuli?

Math
write 225% as a decimal?

geometry
Given a triangle the middle size angle measures 8 degrees more than twice the smaller angle. The middle size angle measures 44 degrees less than the sum of the smallest and largest angle. Find the measure of each angle of the triangle.

ChemistryHelp
An AM radio station broadcasts at 1060 kHz. Calculate the wavelength of the corresponding radio waves. How do I calculate this?

chemistry
At least how many standard solutions would you need to make a calibration graph, assuming that the graph is expected to be a straight line? Explain your answer. Don't include the data from distilled water in this question.

social studies
consumer in a sentence

Chemistry
2C6H6(l) + 15O2 (g) > 12CO2 (g) + 6H2 (l) Calculate the deltaHrxn using standard heats of formations from Appendix C, paying close attention to the physical states of substances. Thanks!

math
59i/5+2i

math
(x16)^2=64

ELA
Word box: Around the world,into the air,with each other,in the nets,into a tight circle,In a single day,in front of ships,near people,along the bottom,in the ocean,into the circling fish Dolphins are some of the most graceful animals that live IN THE

Math
Given that x1 is a factor of f(x)=x^65x^410x^2 k, find the value of k. When k has this value, find another factor of f(x) of the form x a, where a is a constant

Advanced Algebra
Jim begins a job with a starting salary of 27000 dollars. she is guaranteed a raise of 4.75% each year. Sarah also starts a job with a salary of 27000 dollars, she is guaranteed a raise of 1500 dollars each year. What will be Jim's salary after five years

Chemistry
Determine the volume of nitrogen gas at a pressure of 3.00 atm if it had a volume of 400.0 mL at STP.

math
the hypotenuse of a right triangle is 3 less than 4 times the shortest leg. if the longest leg is 24cm, how long is the hypotenuse

ELA
WORD BOX:propose,convince,concern,enforce,compare,excuse,conduct,preserve,contain,excite Underline the word or words in each sentence that can be replaced with a Basic Word.Then write the four basic words. 1.Our class will put forward for consideration a

Math
write 9/5 as a decimal number

Algebra 2
A package is thrown downward with an initial velocity of 5 ft/sec from a helicopter at 300 ft. A) what is the height of the package in 2 sec? B) how long does it take to hit the ground? Round answer to 2 decimals Enter: blank ft,blank sec.

history
Why is Marcus and Narcissa Whitman important to history?

Math
Given two points for a graph: max=3.224 and min=4.664 find the midline and amplitude.

life orientation
criticully discuss 8 ways in which the environmental impact on the community or any other community within south africa or globally

math
5 3/5 + 3/4 + 2 1/2 =

physics
sally and roy both leave school at the same time. roy runs as fast as he can, and sally walks slowly in the same direction.explain how their positiontime graphs would look different. be detailed and use full sentences.

pre algebra
3 1/4  (3  1 5/6) =

Accounting
Imagen Arquitectonica of Tijuana, Mexico is contemplating a major change in its cost structure. Currently, all of its drafting work is performed by skilled draftsmen. Alfredo Ayala, Imagen's owner, is considering replacing the draftsmen with a computerized

algebra
5(4y+5)=3+2(4y6) how do i combine like terms and what do i do with these()?

physics
Al drives his car at a constant velocity of 60 mph.Bob start at rest at stoplight, then pushes the gas pedal, slowly speeding up until he reaches a velocity of 60 mph. explain how their position time graphs will look different.be detailed and use full

math
What is the measure of each angle in a Googolgon

CHEM 1412 general
What is the pH of a solution that is 0.0 100 M in HClO and 0.0300 M in NaClO

math
A baseball player reaches base 35% of the time. How many times can he expect to reach base in 850 atbats?

stats
a random sample of 20 prices for summer sleeping bags was taken with a sample mean $83.75 and a sample standard deviation of $29.97 a) find a 95% confidence interval for the mean price of all summer sleeping bags b)what is m i.e. what is the margin f

math
Jim begins a job with a starting salary of 27000 dollars. she is guaranteed a raise of 4.75% each year. Sarah also starts a job with a salary of 27000 dollars, she is guaranteed a raise of 1500 dollars each year. What will be Jim's salary after five years

math
Express the infinite series below using sigma notation and then find the sum. 64 + 40 + 25 + 15.625... Any explanation would be excellent. Thank you so much.

math
simplify 5+ 1/3x1/3x1/3(1/9+1/9)

MathURGENT!!!!
write the parametric equations of 3x+1/2y=2/3. please help me!!!

Math  Combining Functions
Kathy has a small business selling apple cider at the farmers' market. She pays $35 per day to rent her space at the market, and each cup of cider costs her $1. She sells the cider for $2.50 per cup and brings enough cider and cups to sell a maximum of 200

chemistry
A buffer solution is composed of 0.370M HA, a weak monoproctic acid, and 0.370M NaA, the sodium salt of the acid. The solution has a pH of 3.50. What is the Ka of the weak acid, Ha?

MATH
What is the measure of each angle in a Googolgon

3 grade math ms sue
when lori gave the clerk two $1 bills to pay for items she selected from the list below,she received $0.20 change. pencils: $0.30 each pens: $0.25 each markers: $0.55 each notebook:$1.25 each MY SON SAY WRITE THIS THEN YOU WILL NOW HOW HE HAVE TO DO(WE HAD

Organic Chemistry
Calculate the volume of a 0.200 solution that will completely neutralize 40.0 of a 0.264 solution. Where do I begin with this problem?

Trigonometric prob.
Hi, my question is attached to the web below (picture), because I can't draw the diagram on here. Sorry for any inconvenience. Please help and thanks. imageshack . us/photo/myimages / 845 / img0043gx . jpg/ Sorry, the web address is spaced out so you need

Physics
If an object has twice the electric potential of another object, does it also have twice the electrical potential energy? Why or why not?

chem
you are trying to dissolve 5 grams of sugar in 1 L of water. The sugar will not dissolve fast enough. Explain how you can increase the rate of dissolving? do you increase temperature?

Application prob. for Trig.
Hi, A fountain in a shopping centre has a single jet of water. The height of the jet of water varies according to a sinusoidal function. A student notes that, in exactly one minute, the jet goes from a minimum height of 2m to a maximum height of 6m and

chemistry
suppose you had a sample of water and you knew that either the silver ion or the barium ion were in the water . What negative ion could you add to this water sample that would precipitate out one of the ions but not the other?state which ion would form the

math
2x8(x+y)=yx

Marketing
A. Explain the concept of NET MARKETING CONTRIBTION. B. What fundamental marketing strategies can a business pursue to grow marketing profits? C. Use examples to illustrate these various strategies.

Linear Algebra  Question
I have this number that I just wanted to be sure how to do. They give me a Parallelepiped with corners lettered from A to H. Then the question is: In a certain orthonormal reference, the coordinates of points A, B, D and E are respectively A(0,0,2)

Mathematics
how to find the length of a triangular prism? when the volume is 1470cm cube the height is 10.5cm base 14cm

Marketing
Many companies introduce products that compete not only with their competitors’ brands but with their own internal brands. A. Under what conditions would you introduce a new product that you are sure will cannibalize one of your existing products? B. Why

Chemistr ll
A buffer solution is composed of 0.370M HA, a weak monoproctic acid, and 0.370M NaA, the sodium salt of the acid. The solution has a pH of 3.50. What is the Ka of the weak acid, Ha?

Marketing
You are interested in opening a SNOW BIZ snow cone shack. The SNOW BIZ company who wants to franchise this business to you has provided the following general information: Cost to make each snow cone: $0.25 ice, $0.05 plastic cone holder, $0.03 plastic

math
Mary's test grades were 77, 85, 77, 82, and 80. Mary's teacher recorded one of her grades incorrectly. Instead of an 85, Mary's second test score should have been a 58. Which measure(s) of central tendency is NOT affected by this change?

math aig
mark has 48 marbles.5/12 of them are blue and 1/2 of them are yellow.how many more yellow marbles than blue marbles does he have? my answer is 8,am i right.if not how.

cal
Find the volume of the solid formed by rotating the region enclosed by y=e2x+1, y=0, x=0, x=0.9 about the yaxis.

Math
Give example of each function: (a) degree 2; two zeros, the function decreases then increases (b) degree 3; three zeros, the function increases, decreases, then increases (c) degree 3; two zeros, the function decreases, increases, then decreases (d) degree

cal
Find the volume of the solid obtained by rotating the region bounded by y=5x+25 y=0 about the yaxis.

Chemistry
Na₂CO₃ (s) + 2HCL (ag) → 2NaCl (ag) + CO₂ + H₂O (l) If 4.25g of sodium carbonate is reacted completely with excess hydrochloric acid as 3M HCl, how many mL of HCl would be consumed? Note: Assume 3M HCl contains 3.00 moles of HCl per liter of

trig
Find the dot product of u and v u= 3i+7j v= 11i5j

Politics
In Gandhi's account, the person practicing civil disobedience: Openly and civilly breaks an unjust law and quietly suffers the resulting penalty. Must refuse compliance with all of that society's laws for the sake of consistency. Is justified in

Physics
Every glass window pane has two surfaces that reflect some light as it passes through; why doesn't interference effects show up routinely in every house window? If you could explain this I'd really appreciate it.

to ms.sue
hey, thanks. i known you since about 2 months right? you are a retired teacher and a volunteer on this website?

Calculus
The question will first read in English followed by a reading in French. *************************************** If alpha + 2 beta = pi/4 AND tan beta = 1/3. What would tan alpha mesure? (Keep in mind that pi/4 is the same as 45 degrees.) Si alpha + 2 beta

physics
If you double the frequency of sound, you also double which of the following? A) All of these.B) None of these.C) wavelength.D) amplitude.E) speed.

Biology
What are the similarities of the evolution of birds on hawaiian islands and the finches on the Galapagos?

physics
A stone has a mass of 3.40 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.916. When the tire surface is rotating at 18.8 m/s, the

physics
If you double the frequency of sound, you also double which of the following?A) All of these.B) None of these.C) wavelength.D) amplitude.E) speed.

physics
The quality of a musical tone has to do with a variety of which of the following? A) amplitudes.B) sound speeds.C) intensities.D) decibels.E) harmonics.

STAT
Let X be equal to the number of heads from tossing a coin twice. Verify that the following is the probability mass function of x. p(X x)=1/2(2x)x!

math
If I invested 1,000 into an account earing 5% compund interest which was paid monthly, How much would I have after 3 months?

physics
In a CD, the characteristic that is given in binary is the wave of which of the following? A) amplitude B) None of these.C) quality.D) speed.E) frequency.

Economics
Suppose the market for the magazine is in equilibrium. Some students insist on raising the cover price by $1 and printing the same quantity. What is likely to happen? A. The demand for the magazine will go up. B. There will be a shortage of 150 magazines.

english
hey I'm a 9th grader and my english teacher give me a summative homework about rumors. He need us to write a problem that happen in school and also want us to answer or solve the problem about rumors.. I need help with it because I know nothing about

Chem
If 20.0 L of a gas is cooled from 373 K to 273K, what is the new volume?

social studies
Which of the following statements should not be included in the general principles of selfevaluation in a child care facility? A. The knowledge that a selfevaluation is taking place should be restricted to the program director. B. Selfevaluation should

Economics
Ok this is the last one Why do public goods demonstrate the limitations of a free market economy? A. They allow consumers to make all of the economic decisions. B. They allow government to make some economic decisions. C. They allow government to control

Microeconomics
What has the video gaming industry done from a microeconomic perspective? Furthermore, analyze the gaming industry with a specific emphasis on jobs created by the gaming industry and how do they pay? How is it developing? What are the expectations, salary,

Ant 101
Modernization theory suggests

4th grade limericks
can you please check this for me: there once was a cat named rainbow, so fat and colorful, she loved to catch mice to eat, on her big fat feet, and she's a cat who likes to tiptoe.

geometry
Zoe the goat is tied by a rope to one corner of a 15 meterby25 meter rectangular barn in the middle of a large grassy field. Over what area of the field can Zoe graze if the rope is 10 meters long? 20 meters long? 30 meters long?

Calculus
you have 1000 yards of fencing and you plan to use the fencing to make 2 enclosures, one circular and one a square. How much of the 1000 yard of fencing should be used for each region if you want to maximize the combined area of both regions Let x yards of

chemistry
Which radioactive emanations have a charge of 1? beta particles alpha particles gamma rays neutrons

English
ms. sue u please give me some sites on great depression that have author? i doing a presentation online, telling about economy of depression, black thursday/tuesday and stock market? Also black thursday/tuesday be same thing or different?

world history
At the end of the eighteenth century, _______ had the largest economy in the world A. India B. Spain C. Britain D. China

math
How do I know which side is the base of a triangle? I'm trying to find surface area of a trianglular prism.

calculus
1. A hill with a 35 degree grade (incline with horizontal) is cut down for a roadbed to a 10 degree grade. If the distance from the base to the top of the original hill is 800 ft., How many vertical ft will be removed from the hill rounded to the nearest

Algebra2
Index 3 Sqr Rt y^13 times index 3 sqr rt 81y^14

calculus
2. A spin balancer rotates the wheel of the car at 480 revolutions per min. if the diameter of the wheel is 26 in what road speed is being tested in the miles per hour? Round to the nearest tenth

statistics
Describe a process you could use to get a simple random sample of size 20 from a class of size 40

PreCalc/Math
Prove the identit: cosxcotx+sinx=cscx

Statistics
The driver of a truck loaded with 900 boxes of books will be fined if the total weight of the boxes exceeds 36450 pound. If the distribution of the weight of a box has a mean of 40 pounds and a variance of 36, find the approximate probability that the

calculus
4. You are at Lowes and a man is leaning against three sections of fencing that are 6,7 and 12 ft long. A Lowe’s person tells him to discard the 12 ft section and buy a 10ft section. She informs the customer that this would save money and would fence a

PreCalc/Math
If cosx= 2/3 and pi/2, find the exact value of cos(pi/3x)

Physics/ Music
Suppose you make a tape recording of a male voice singing slowly and playing it back at double speed. What will happen to the pitch of each note? What will happen to the formant frequencies of the vowels? Will it merely sound like a woman singing fast?

Calculus
you have 1000 yards of fencing and you plan to use the fencing to make 2 enclosures, one circular and one a square. How much of the 1000 yard of fencing should be used for each region if you want to maximize the combined area of both regions Let x yards of

math
simplify the expression 0.5x+0.4x0.1x= after ea. x squared 3

Statistics
“How would you describe your own physical health at this time? Would you say physical health is—excellent, good, only fair, or poor?” The Gallup Poll asked this question of 1005 randomly selected adults, of whom 29% said “excellent.” Suppose that

phys
A reversible engine with an efficiency of 32.0% has TC = 304.0 K. (a) What is TH? (b) How much heat is exhausted for every 0.138 kJ of work done?

English
How are the words hasn't, haven't and had't alike?

life orientation
1015 LINES CRITICALLY DISCUSS 5 WAYS IN WICH THE HUMAN OR ENVIRONMENTAL PROBLEM IMPACTS ON THE COMMUNITY.PROVIDE RELEVANT SOURCES TO SUPPORT YOUR CLAIMS

life orientation
name two institutions/community organizations that are involved in supporting or giving redress to these disesters . explain how these organizations are involved in providing a safe and healthy environmental(suggestion;find out about NGO's or other

Statistics
Suppose it can be assumed that 60 percent of adults favor capital punishment. Find the probability that on a jury of twelve members: a) All will favor capital punishment. b) There will be a tie.

Maath:)
If a rock is thrown upward from a height of 100 ft, with an initial velocity of 32ft/sec, solve for the time that it takes for it to hit the fround (when h=0) Round your answer to 2 decimals. Please and thankkk youuu(:

Statistics
When fifteen vehicles were observed at random for their speeds (in M.P.H.) on a freeway, the following data were obtained. 61 53 57 55 62 58 60 54 62 60 59 66 55 54 63 Suppose that from past experience it may be assumed that vehicle speed is normally

combinatorics
1. You have k slots (of the same size) to drop n tokens into. How many ways can you do this if the tokens are marked? Unmarked? (Hint: try with 3 tokens and 7 slots first) 2. What is the probability of getting them all in the unique “winning” slot? (Do

Statistics
A study on the amount of dye needed to get the best color for a certain type of fabric was conducted. The following data give the photometer readings for the color density of the fabric when the amount of dye used was 1% of the weight of the fabric. 13.2

physics
A spherical mass 'm'is dropped vertically off a building starting from rest and 'y=0'.the mass experience a resistive force 'FR=bv'.let 'r=b/m'.find the position'y(t)'of mass??? pizzzzzzzzzzz help me.........

Combinatorics
Entropy 1. Suppose a room has n molecules of a gas. We divide the room into k equal parts. How many ways can the molecules be split evenly between the parts (you may assume that n is divisible by k)? How many ways can the molecules be in only one part?

Math
The distance of a car from a certain intersection after t seconds is given by d(t) = 12 + 3t  t2. When (that is, for which values of t) is the car 12 units away from the reference point?

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.

geometry
the diameter of the metal rack represented is 34 cm. To add two support wires (AB and CD) each 8 cm from the center of the rack and perpendicular to the horizontal wires , how many centimeters of wire would you need?

phys
A town is planning on using the water flowing through a river at a rate of 4.9 106 kg/s to carry away the heat from a new power plant. Environmental studies indicate that the temperature of the river should only increase by 0.50° C. The maximum design

Life orientation
Provide recommendations on how to address land pollution.

english/check please
label the subject and the verb of each of each clause. Then write whether the sentence is simple or complex. 1)Every afternoon the baseball team practices. subject: the baseball team verb: practices simple sentence 2)When practice is over, the players are

Life orientation
In 1015 lines critically discuss 5 ways in which land pollution impacts on the community.Provide relevant sources to support your claims.

math
A clerk can file cards at the rate of 120 cards per hour. He has a total of 900 cards to file. How many cards remain to be filed after 6 hours?

CHEMISTRY
THE HEAT OF NEUTRALIZATION OF 0.120KG OF ethanoic ACID WITH EXCESS OF NaOH

English
I'm a 1500 comparative essay on 2 books. I was wondering what the layout should be like? How does this look? Introduction (with thesis) Paragraph 1/subtopic 1 (book 1) Paragraph 2/subtopic 1 (book 2) Paragraph 3/subtopic 2 (book 1) Paragraph 4/subtopic 2

math
calculate the average percent 1970 1980 1990 2000 17.2 17.3 17.1 16.6 do you add them all together then divide by 4

English IV
AS a Naive allegory, "Everyman":

Life orientation
Name two institutions/community organizations that are involved in supporting or giving redress to environmental or human factors.Explain how these organizations are involved in providing a safe and healthy environment.(Suggestio:find out about NGO's or

calculus
If f(x)=x^2 –4, ... x > or equal to 0 and g(x)=sqrt(x+4) ... x > or equal to –4 , (a) f(g(x))= (b) g(f(x))= (c) Thus g(x) is called an INVERSE function of f(x)  If f is onetoone and f(–4)=14, then f^–1 (14)= and (f(–4))^–1= . If g is

world history
What practice was key to the success of the Mughals in ruling over India? a. Moderate taxes and public spending B. High taxation and public spending C. An emphasis on peaceful relations between states D. Low taxation and a reliance on selfinitiative

Chemistry
Why can some borax also dissolve at room temperature?

English IV
In "The Great Silkie of Shule Skerrie," the miaden is upset because:

Economics
Why does a government place price ceilings, such as rent control, on some "essential" goods? C. am I right? A. to prevent the development of a black market B. toencourage an increase in supply of necessary items C. to limit the impact of equilibrium

Economics
Why do public goods demonstrate the limitations of a free market economy? A. They allow consumers to make all of the economic decisions. B. They allow government to make some economic decisions. C. They allow government to control most economic decisions.