Questions Asked on
October 6, 2013

general chemistry
a 5.95 g sample of AgNO3 is reacted with excess BaCl2 according to the equation 2AgNO3 + BaCl2 yields 2AgCl + Ba(NO3)2 to give 3.17 g of AgCl. What is the percent yield of AgCl?
asked by Anonymous 
Physics
A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. How long is she in the air before returning to Earth? (g = 9.81 m/s2)
asked by Sarah 
Physics
In protonbeam therapy, a highenergy beam of protons is fired at a tumor. The protons come to rest in the tumor, depositing their kinetic energy and breaking apart the tumor’s DNA, thus killing its cells. For one patient, it is desired that 0.10 J of
asked by Lisa 
chem 2
calculate kc for reaction I2 (g)+Cl2 (g)⇌2ICl(g )Kp=81.9 (at 298 K)
asked by tiffany 
Math
Who is working harder, Fred running a 10 min mile pace at a 10% grade or Pete who is 55 kg, cycling on a Monarch ergometer with a resistance of 2.5 kg and a pedal rate of 60 rpm?
asked by Natasha 
chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
asked by Sean1987 
Calculus  Limits. Check my answer, please! :)
Suppose that h(x)={x^2x+5 if x2 Which of the following is equal to 7? I. lim h(x) x>2 II. lim h(x) x>2+ III. lim h(x) x>2 I only II only ***III only I and II only I, II, and III
asked by Samantha 
college physics
The charge per unit length on a long, straight filament is 87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive
asked by vishal 
english
6.Read the following excerpt from "The Middle Passage" by Olauduh Equaino. Immediately another quite dejected fellow who on account of his illness was suffered to be out of irons also followed their example and i believe many more would soon have done the
asked by learner 
Chemistry
If 5.300 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)> 12CO2(g)+6H2O(l) +6542
asked by Jason 
Chemistry
Ethanol (C2H5OH) is synthesized for industrial use by the following reaction, carried out at very high pressure. C2H4(g) + H2O(g) → C2H5OH(l) What is the maximum amount, in kg, of ethanol that can be produced when 1.65 kg of ethylene (C2H4) and 0.0610 kg
asked by Brittney 
MATH  URGENT!!!
In how many ways can you spell the word COOL in the grid below? You can start on any letter, then on each step you can step one letter in any direction (up, down, left, right, or diagonal). You cannot visit the same letter twice. C C C C C L O O O L L O O
asked by Speedo 
math
I need the answers to the why did the banana go out with the prune worksheet. I already have the answer to the riddle, but I need the numeral answers please.
asked by kk 
Psychology
Please check my answers... 1. Asthma is associated with environmental conditions. True 2. Only onehalf of U.S. children with asthma follow their doctor's advice about medication. False 3. The percentage of overweight children has increased only marginally
asked by Lisa 
physics
Derive a formula for the maximum speed vmax of a simple pendulum bob in terms of g, the length ℓ, and the maximum angle of swing θmax. Express your answer in terms of the variables g, l, and θmax.
asked by Anonymous 
chemistry
Suppose 13.8 g Na and 21.6 g of water are mixed. What is the theoretical yield in grams of hydrogen from this mixture. what is the % yield if 0.500 g of H2 is formed
asked by Anonymous 
Physics/electricity
In the Bohr model of the hydrogen atom, an electron in the 2nd excited state moves at a speed of 5.48X10^5 m/s in a circular path having a radius of 2.12X10^10 m. What is the effective current associated with this orbiting electron?
asked by Derrick 
Math
What is the functional capacity in METs and Vo2 (mL/kg/min) of a 70 kg man who completed Stage V (3mph, 12.5% grade) of a Balke TM test?
asked by Natasha 
Chemistry
The tripeptide is TAK 1. What is the overall charge of the tripeptide below pH 1.0? 2. What is the overall charge of the tripeptide at pH 12? 3. What type of intermolecular attractions could the side chains of the amino acids make with the solvent
asked by Jake 
Physics/electricity
Eighteengauge wire has a diameter of 1.024 mm. Calculate the resistance of 19 m of 18 gauge lead wire at 20°C.
asked by Joe 
physics/algebra
Find the tension in cable A A if w 1 w_1 = 54.0N N and w 2 w_2 = 120N in a downward triangle 60degress on (both sides of angel and at the end of the triangle is w1 a and then w2) how would I solve this equation I don't have a glue where to start. Your help
asked by deb 
Algebra
A baseball team has home games on Thursday and Saturday. The two games together earn $4571.50 for team. Thursdays games generates $68.50 less than Saturday's game. How many was taken in each games? How much did Thursday's game generate?
asked by Lisa 
Calculus help, please! :)
Consider the table of data for the function g(x),below: x: 2.9, 2.99, 2.999, 3.01, 3.1 g(x):4.41, 4.9401, 4.994, 5.006, 5.0601, 5.61 From the data given, it would appear that the lim g(x) x>3 is likely to be:
asked by Samantha 
algebra
Suppose someone opens the valve on a large water tank so that water drains out. Choose a starting volume of water in the tank (from 100 to 500 gallons), and choose how much water drains out each day (from 2 to 5 gallons). Write the equation that
asked by Olive 
MATH  URGENT!!!
There are 5 boys and 4 girls in my class. In how many ways can they be seated in a row of 9 chairs such that at least 3 girls are all next to each other?
asked by Speedo 
Jiskha
I typed several questions and answers regarding the subject of Geography, and suddenly, as I was waiting for a reply from Ms. Sue, it seemed as though my questions were deleted from the webpage where all of the other questions are posted. I do not know
asked by Anonymous 
physics
The drawing shows an exaggerated view of a rifle that has been "sighted in" for a 91.4meter target. If the muzzle speed of the bullet is vo=427m/s, what are the two possible angles between the rifle barrel and the horizontal such that the bullet will hit
asked by Anji 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by URGENT(could some one pls give me the answer 
Geography (Ms. Sue)
1). How has Siberia's climate affected transportation in the region? A: Siberia's climate has affected transportation as it made travel through the region was slow and dangerous. 2). What impact did the TransSiberian Railway have on Russia's population?
asked by Anonymous 
Finance
You were hired as a consultant to ABC Company, whose target capital structure is 40% debt, 15% preferred, and 45% common equity. The beforetax cost of debt is 8.00%, the cost of preferred is 7.50%, and the cost of common is 12.75%. What is its WACC if the
asked by Ire 
Physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 42 ∘. The gravitational acceleration is g=10 m/s2 (a) At
asked by Anonymous 
Chem
An analysis of generic antacid tablets labeled to contain 250mg of CaCO3 (MM= 100.09g/mol) per tablet of active ingredient was performed. The analysis was performed by dissolving a 0.550g sample of the antacid tablet in 75.00mL of 0.1055M HCl. The excess
asked by Marina 
physics(help)
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by physics(help) 
Biochemistry
You are performing sitedirected mutagenesis to test predictions about which residues are essential for a protein's function. Which of each pair of amino acid substitutions listed below would you expect to disrupt protein function the most? A. Val replaced
asked by Zyna 
PHYSICS
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by PHYSICS 
math
The reading list for a literature class has 7 fiction and 9 nonfiction books. A student is to write a report on 5 books from the list during the semester. The reports must include at least 1 and at most 4 reports of fiction books. In how many ways can the
asked by Anonymous 
College Math 45
Mrs. Brown has 17 children in her firstgrade class, and Mr. Lopez has 20 children in his secondgrade class. The principal has been asked to select 1 student from one of the classes to appear at a PTA meeting. How many ways can the selection be made?
asked by Anonymous 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 45 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by kyle(PLS HELP ) 
Algebra
The blood alcohol concentration (BAC) of a person who has been drinking is given by the following expression. Number of ounce % alcohol x 0.075 divide body weight in pounds minus hour of drinking x 0.015 In 4 hours a 220lb person has drunk 5 12 ounce beer
asked by Lisa 
Algebra
A mother wants to invest $ 12,000.00 for her sons education. She invests a portion of the money in a bank certificate of deposit (CD Account) which earns 4% and the remain saving bond that earns 7%. If the total interest earned after a year is 720.00, How
asked by Lisa 
physics
a projectile launched speed of 31.1m/s at angle 71.2 degrees above horizontal fill in table time 0 vx m/s 10.0m/s vy 29.4m/s ax? ay?
asked by rebecca 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by PHYSICS 
Geometry
1. Twyla's pet cat weighs 8lb. Her pet hamster weighs 12 ounces. What is the ratio of her cat's weight to her hamster's weight? 2. The nonright angles of a right triangle are in the ratio 1:5. Write the equation that could be used to find the measure of
asked by Chelsey 
chemistry
Mr. Arswan iss preparing a mixture for a science experiment. He measures 10.5 grams of wood shavings, 150 grams of iron filings, and 18.50 grams of salt. What is the total mass of Mr. Arswan`s mixture? A 30.5 grams B 179 grams C 150.5 grams D 17.9 grams
asked by na 
Calculus. Limits. Check my answers, please! :)
4. lim (tanx)= x>pi/3 (sqrt3) 1 (sqrt3) ***1 The limit does not exist. 5. lim x= x>2 2 ***2 0 1 The limit does not exist. 6. lim [[x]]= x>9/2 (Remember that [[x]] represents the greatest integer function of x.) 4 5 ***4.5 4 The limit does not
asked by Samantha 
Math
A 50 kg individual needs to work at a MET level of 6 to reach her target heart rate. If the treadmill speed is set at 3.5 mph, what grade is needed? If she exercise for 30 minutes at this intensity, how many kcal will she expend.
asked by NM 
more news
What is the Watergate scandal and why could this story not have happened in 2012? I know what the watergate scandal is, it was the political scandal that led to Nixons resignation where burglars who broke into the Democratic party headquarters had ties to
asked by Blaze 
Calculus help, please!
1. Evaluate: lim x>infinity(x^47x+9)/(4+5x+x^3) 0 1/4 1 4 The limit does not exist. 2. Evaluate: lim x>infinity (2^x+x^3)/(x^2+3^x) 0 1 3/2 2/3 The limit does not exist. 3. lim x>0 (x^37x+9)/(4^x+x^3) 0 1/4 1 9 The limit does not exist. 4.For the
asked by Samantha 
math
The sales, in millions of dollars, of a laser disc recording of a hit movie t years from the date of release is given by: S(t) = (5t)/(t^2 + 1) a) Find the rate at which the sales are changing at time t. b) How fast are the sales changing at the time the
asked by Samantha 
Chemistry
What is the purpose of adding distilled water to an HCl solution?
asked by Lei 
Math
Sue's bike has whheels that are 60cm in diameter. 1.1 How far does the bike move in one full turn of the wheel?
asked by Dineo 
physics
A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was
asked by Louis 
physics
A ball is thrown at 19 m/s at 41° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was
asked by Louis 
Geography (Ms. Sue)
1). Where are most of the region's (Russia and the Republics) smaller republics located? A: ? 2). What was the largest republic in the Soviet Union? What is the largest republic in the region today? A: ? 3). To which of the Soviet Union Socialist Republics
asked by Anonymous 
Precalculus
Find the discriminant of 3x^22x+2=0 and then solve by whichever method seems easiest
asked by Anna bosco 
Statistics
How do I find the deviation of each xvalue from the expected value of 0.97? The chart looks like this... x P(x) xu 0 0.24 ? 1 0.55 ? 2 0.21 ?
asked by Lisa 
Maths
If a line with xintercept −5 and yintercept 35 passes through point P=(5,a) , what is the value of a ?
asked by CHRIS 
Government
Journalist Walter Lippmann suggested that Question 18 options: 1) polling, even when done scientifically, cannot be trusted because it is in people’s nature to be dishonest in response to political questions. 2) the dominance of polling has brought about
asked by Alexa 
News
What purpose do Tabloids have in today's society?
asked by Blaze 
Chemistry
Convert the concentration of CoCl2 from 22.0 mg/mL into molarity.
asked by S 
Calculus
Finf (dy/dx) y=(1+28x^3)f(x)+(6x)g(x)(x^4+5x+7)+(6x)g(x)(x^4+5x+7)(e^x+7x^4)f(x)+3x^2g(x)(4x^3+5+7)/((x^4+5x+7)^2
asked by D 
Journalism
I've started working on an article for my Journalism class about vegetarianism  pros and cons, and why or why not people at my school support it. I've gotten a few paragraphs in, but I'm having trouble on writing the lead. Any suggestions?
asked by Lindsay 
arithmetic
2+15/3*5=
asked by mike 
Chemistry
I need help with answering this question. Thanks! What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?
asked by Anonymous 
Physics
Victor drove his truck off a cliff that was 45m high, and it landed 35m from the base of the cliff. What was the velocity of the truck as it drove off the cliff?
asked by Nikolina 
math
[4]5.1=4.4.4.4.1    = 5 4 5.5.5.5.5 simplify by multiplying. what is the final answere.
asked by Jimmie 
Physics URGENT
A 55 kg boy and a 37 kg girl use an elastic rope while engaged in a tugofwar on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.4 m/s^2, determine the magnitude of the acceleration of the boy toward the girl in m/s^2
asked by Natalie 
Chem
An 80.0gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6635 J. What is the specific heat of the gas?
asked by James 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by URGENT(could some one pls give me the answer 
Chem
An 80.0gram sample of a gas was heated from 25 °C to 225 °C. During this process, 346 J of work was done by the system and its internal energy increased by 6635 J. What is the specific heat of the gas?
asked by James 
physical science
A 12kg iron ball is dropped onto a pavement from a height of 90m. Suppose half of the heat generated goes into warming the ball. What is the temperature increase of the ball in degree C
asked by martha 
Geography (Ms. Sue)
How can climate affect transportation? I know you guided me towards the answer earlier, but I am struggling to place all of the information into a mere sentence.
asked by Anonymous 
poetry
The poem is: Canada Day Love Match My mother stalked her future son in law, convinced he was the one for me. Through the crowd at the Forks Market, she kept behind him like a cat ready to pounce. I kept out of his line of sight. Blind to us, he watched
asked by Gary 
physics
If a ball has an initial speed of 26.9 m/s and is launched at an angle of 63.2 degrees above the horizontal, what is the tallest obstacle that the ball can clear?
asked by Cassie 
Radio
How is Sirius XM radio different than AM/FM.. I know AM is radio transmissions created by changing the power of the carrier wave, and FM are transmissions created by changing the speed at which radio waves are generated.
asked by Blaze 
PreCalculus
Find the unknown in the following equation. If there are more than one solution, then separate the solutions with a comma. (−8y−4)^2+10=14 y=? I keep on getting y=0.5, is that correct?
asked by Ann 
math
jon makes a bar graph that shows the number of dogs owned by members of his class. if the smallest number is 1 and the largest number is 4 what interval should jon use?
asked by mia 
Linear Equation
solve for x 6x+12=13x+10 x= 2 x= 2/7 x= 2/19 x= 2/7 I have no I idea how to answer this question. Can you give me an explanation with the answer? Thank you
asked by Alex 
italian
write a sentence using the expression "avere mal di"
asked by Ani 
Math
It is 405 miles from Minneapolis, Minnesota to Chicago, Illinois. It is 692 miles from Minneapolis to Cincinnati, Ohio. Cincinnati is how many miles farther from Minneapolis than Chicago? Write an equation and solve the problem
asked by Sandy 
Physics
A person is standing on the edge of a cliff of height h= 24 m. She throws a stone of mass m=0.2 kg vertically down with speed v0= 10 m/s (stone 1) and another stone of the same mass vertically up at the same speed (stone 2). The gravitational acceleration
asked by Anon 
Chemistry  Please help
I need help with answering this question. Thanks! What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?
asked by Anonymous 
chemistry
Manganese(III) fluoride, MnF3, can be prepared by the following reaction: 2MnI2(s) + 13F2(g) → 2MnF3(s) + 4IF5(l) If the percentage yield of MnF3 is always approximately 51%, how many grams of MnF3 can be expected if 40.0 grams of each reactant is used
asked by Brittney 
Vectors
A ship is being pulled by two tugboats. The smaller tugboat is 13 degrees off the port bow and the larger tugboat is 20 degrees off the starboard bow. The larger one pulls twice as hard as the smaller tugboat. In what direction will the ship move?
asked by Rayne 
math
How to graph the following problems on a graph. 1. y= 2x+5 2. 2x+ 3y= 8 3. y= 3x5 4. 4y= 2x9
asked by chatis 
Geography (Ms. Sue)
1). How can climate affect transportation? A: Climate can affect transportation as it can cause a delay in transportation or can enhance the speed and process of it? 2). To what depths can permafrost extend in Russia and the Republics? A: ? 3). How has
asked by Anonymous 
Geography (Ms. Sue)
In what ways are Eastern Europe and Northern Europe different? I know you have already told me of what to consider and ponder about, but I am truly struggling with this question. Is there, perhaps, a link you could provide for me?
asked by Anonymous 
Physics
Two 2.9cmdiameter electrodes with a 0.15mmthick sheet of Teflon between them are attached to a 9.0 V battery. Without disconnecting the battery, the Teflon is removed. a) What are the electric field after the Teflon is removed?
asked by Leanna 
chemistry
If 4.0L of a 4.7M SrCl2 solution is diluted to 45L , what is the molarity of the diluted solution?
asked by Anonymous 
6th grade math
Rachel completed 3/4 of her cleaning in 4 hours. How many total hours will Rachel spend cleaning? 4 divided by 3/4 4/1x4/3=16/3= 5 1/3 hours Is this correct?
asked by Chris 
Geography (Ms. Sue)
How many time zones are there in the continental United States? A: There are four time zones in the continental United States?
asked by Anonymous 
Vectors
Three forces of 5N, 8N, and 10N act from the same corner of a rectangular solid along its three edges. a) Calculate the magnitude of the equilibrant of these three forces. b) Determine the angle that the equilibrant makes with each of the three forces.
asked by Rayne 
English
1. He is sitting down in a chair and playing drums. 2. He is sitting in a chair and playing drums. 3. He is sitting down on a chair and playing drums. 4. He is sitting on a chair and playing drums. (Which ones are grammatical? Do we have to use 'down' or
asked by rfvv 
PHYSICS
55 kg boy and a 37 kg girl use an elastic rope while engaged in a tugofwar on a frictionless icy surface. If the acceleration of the girl toward the boy is 2.4 m/s 2 , determine the magnitude of the acceleration of the boy toward the girl in m/s^2
asked by Natalie 
Geography (Ms. Sue)
What is the textbook asking of me when the question is, "What is the current time in the time zone in which you live"?
asked by Anonymous 
geneticsPLEASE HELP
Two parents who are each known to be carriers of an autosomal recessive allele have four children. None of the children has the recessive condition. What is the probability that three or more of the children are the carriers of the recessive allele?
asked by jen 
PHYSICS
A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet.
asked by smita 
Physics
An unmarked police car traveling a constant 80km/h is passed by a speeder traveling 135km/h. Precisely 3.00s after the speeder passes, the police officer steps on the accelerator; if the police car's acceleration is 1.50m/s^2 , how much time passes before
asked by Matthew 
chemistry
Volume (mL) of 2.15 M potassium hydroxide that contains 8.09 g of solute WebAssign will check your answer for the correct number of significant figures. mL
asked by john 
Chemistry
ZN(s) + 2H+(aq) produces ZN2+(aq) +H2(g) A sample of Zinc is placed in the ice calorimeter. if 0.0657g of Zinc causes a decrease of 0.109ML in the ice/water volume of the calorimeter, what is the enthalpy change, per mole of Zinc, for the above reaction
asked by Temmick 
algebra
The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving
asked by Ernie 
Geography (Ms. Sue)
1). How might the Arctic Ocean affect the region's (Russia and the Republics) climate? A: This ocean might affect the region's climate as its wind currents contribute to this region's climate?
asked by Anonymous 
Materials Science & Physics
Consider a tetragonal phase of which the lattice parameters satisfy c = 2a. Diffusivities of the phase were measured in two different directions as: 6.0x1012 cm2/sec along [101] and 8.0x1012 cm2/sec along [001]. (a) Determine the diffusivity tensor (Dij)
asked by Jinwon 
PreCalculus
The Hotel Bellville has 400 rooms. Currently the hotel is filled . The daily rental is $ 250 per room. For every $ 14 increase in rent the demand for rooms decreases by 5 rooms. Let x = the number of $ 14 increases that can be made. What should x be so as
asked by Ann 
english
Although she never actually said it, mom (blank) that we were going to get a pet. a=refuted b=implied c=substantiated d=inferred answer is b
asked by kevin 
English
1. The basketball player threw the ball into the basket. 2. The basketball player threw the ball in the basket. 3. The basketball player threw the ball on the board so that it can go into the basket. 4. The basketball player threw the ball onto the
asked by rfvv 
college physics
The charge per unit length on a long, straight filament is 87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive
asked by vishal 
Ethics and moral reasoning
The history of philosophy would describe Immanuel Kant as
asked by Anonymous 
Journalism
I tried writing the opening to my article on vegetarianism and this is what I got so far. [A lot of people like to sit down at night and eat a big, juicy steak – and then there are those who prefer an organic meal without any meat. Vegetarianism is not
asked by Lindsay 
history
2. William Lloyd Garrison’s The Liberator was known for appealing to its readers’ sense of (1 point) A. moral correctness. B. modern convenience. C. economic concern. D. social status. a
asked by t 
Geography (Ms. Sue)
If it is 6:00 Sunday morning in New York,what are the day and time in Auckland, New Zealand?
asked by Anonymous 
math
A tray contains 11 chocolate chip cookies and 15 oatmeal raisin cookies. How many ways can a child select 4 cookies that include at least 1 chocolate chip cookie?
asked by Anonymous 
algebra
to determine the number of trout in a lake, a conservationist cathes 123 trout, tags them and throws them back into the lake. later,44 trout are caught, 11 of them are tagged. how many trout would the conservationist expect to be in the lake
asked by Ernie 
math
Assume that the camper has 3 jackets, 7 sleeping bags, and 9 different packages of food. An outfit consists of 1 jacket, 1 sleeping bag, and 6 packets of food. How many ways can the trip be outfitted?
asked by Anonymous 
Computers
Hi, Am I on the right track? Reading for an hour now..and wanted to check my answers.. Which modem uses the same medium used to transmit video signals" My answer: C. Cable ADSL BRI DiGITAL '2. Which is the fastest wireless standard? My answer: 802.11G
asked by Dallas 
science
What fraction of piperazine (perhydro1,4diazine) is in each of its three forms (H2A, HA–, A2–) at pH 8.67? The acid dissociation constant values for piperazine are Ka1 = 4.65×10–6 and Ka2 = 1.86×10–10.
asked by nick 
math
a picture 8 in. by 12 in. is placed in a frame which has uniform width. if the area of the frame equals the area of the picture, find the dimension of the frame
asked by joei 
math prob
A committee of 5 people is selected from a group of 7 men and 9 women. In how many ways can the committee be selected so it contains at least 1 woman?
asked by Anonymous 
maths
(3x + 4) + (5y 1) = 10  16i A. x = 2, y = 3 B. x = 1, y = 2 C. x = 3, y = 2 D. x = 3, y = 1 think the answer is C
asked by Anonymous 
math prob
Twelve people attend the first meeting of the Star Wars Club. They exchange email addresses. How many exchanges take place?
asked by Anonymous 
sociology
what are three challenges involved with ensuring that teachers strategies are appropriate for culturally diverse children
asked by Anonymous 
physics
The speed of a moving sidewalk at an airport is 2ft/sec. A person can walk 93ft forward on the moving sidewalk in the same time it takes to walk 12ft on a non moving sidewalk in the oppsite direction. At what rate would a person walk on a nonmoving
asked by Ernie 
maths2
10x  1 = x  10 A. 1, 1 B. 1 C. 1 D. No solution
asked by mdan 
Algebra
(vx0.54035450)divide by 1000x34.04 use the expression calculate the property tax paid with the home value of $170,000
asked by Lisa 
math
arman has 1160 annual income from bonds bearing 3% and 5 % interest. then he added 25% more of the 3% bonds and 40% more of the 5 %bonds, threby increasing his annual income by 410. find his initial investment in each type of bond
asked by joei 
Algebra 1
a triangle has an area of 20 inches squared. every dimension of the triangle is multiplied by a scale factor, and the new triangle has an area of 180 inches squared. what was the scale factor?
asked by Shanelle 
Physics/Electricity
An aluminum wire carrying a current of 9.0 A has a crosssectional area of 7.0X10^6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electrons are supplied by each atom.)
asked by George 
intermediate algebra
a motorboat moves 25 miles per hour in still water. it travels 21 miles upstream and 21 miles downstream in a total time of 2.0 hours. whatis the speed of the current?
asked by Ernie 
maths
find equations for the tangent and the normal at P (1n2, 2k) on the curve with equation y=ke^x, where k is a constant. (b) given that y=sin^1x, show that (1x^2)d^2y/dx^2xdy/ dx=0
asked by gibbsm 
Physics
If a car is going .197 meters per second, how long will it take to go 5 kilometers (assuming the ground is perfectly flat).
asked by Nick 
Math: Precalculus
A rancher wants to build a rectangular pen with an area of 180 . Let W be the width of the pen and L be the length of the pen. a) Find an equation for the perimeter P in terms of W and L . b) Use the given area to write an equation that relates W and L .
asked by Sarah 
Math
A sociology seminar has 7 members (a) They begin each meeting with each member shaking hands with all the other members. No one shakes another member's hand twice. How many handshakes take place? (b)The professor shakes hands with each member of the
asked by Danielle 
CHEMISTRY
When we combine the three gas laws into one expression: V is directly proprtional to T P is directly propetional to T > PV is directly proprtional to T P is inversely proportional to 1/V PV/T= constant *******I do not understand how PV is directly
asked by Anonymous 
maths
given the curve y=2x/(1+x^2)^2 (a) prove that dy/dx =2(1x^2)/(1+x^2)^2 (b) find the coordinates of the stationary points and state the nature of the stationary points.
asked by mumbula 
Chemistry
Identification of an unknown powdered metal by reaction with HCl: Why does the pH of the HCl solution initially increase very slowly when an unknown metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds
asked by Ali 
chemistry
A certain microwave oven delivers 800. watts (J/s) of power to a coffee cup containing 45.0 g of water at 25.0°C. If the wavelength of microwaves in the oven is 9.75 cm, how long does it take, and how many photons must be absorbed, to make the water boil?
asked by Anonymous 
math
1. What is the greatest common factor of: 2x2x5x7x7 2x5x5x7x7 a. 2x5 b. 2x5x7 c. 2x5x7x7 d. 2x2x5x5x7x7 e. 2x2x2x5x5x5x7x7x7x7 2. What is the least common multiple of: 3x3x5x5x5x7 2x3x5x5x7x7 a. 2 b. 5x5x7 c. 3x3x5x5x5x7 d. 2x3x3x5x5x5x7x7 e.
asked by Tomas 
Chemistry
What is the purpose of adding 100 mL of distilled water to a beaker containing metal nitrate solution?
asked by Ben 
Economic's,tourism,geography,pure math's
What can i study when i finnish school i am doing grade 10
asked by Pritty khumalo 
Algebra
In actor inveseted in some money at 8% and 27,000.00 more than 3 times the amount of 12%, The annual interest is $56480. How much did he invest at each amount? Use the sixstep He invested $ _ at 8% and $_ at 12%
asked by Lisa 
Physics
A stone is thrown up vertically from the ground (the gravitational acceleration is g = 10 m/s^2 ). After a time dt =1 s, a second stone is thrown up vertically. The first stone has an initial speed v1 = 11.0 m/s, and the second stone v2 = 16.0 m/s. (a) At
asked by Anonymous 
math
Which set of numbers has a greatest common factor of 1 ? a. 2,3,and 6 b. 2,200, and 400 c. 3,9,and 27 d. 22,33,and 99 e. 100,500, and 2,500 please answer and explain
asked by Tomas 
algebra
What did the baby buzzard say when it say an orage in the nest
asked by dani 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by anon 
world history
the meaning of paleolithic age
asked by elizabeth 
Physics
The time at which it took the arrow to reach the bulls eye is .6 seconds and it will land 1.8m under the bullseye
asked by Joah 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by anon 
college physics
The charge per unit length on a long, straight filament is 87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive
asked by vishal 
bus 101
Team diversity is often established in a team,by bringing together the expertise of members from various functions in the organization. A.problemsolving B.working C.crossfunctional D.selfmanaged I need help with this ? THX
asked by Okato 
Chemistry
In the space below, show your work for determining the volume, mass, and moles of baking soda Moles of baking soda reacted Mass of baking soda reacted (g) Volume of baking soda reacted 140 ml of vinegar 5 tsps of baking soda were used
asked by Matt 
Chemistry
I need help with answering this question. Thanks! What is the absolute entropy of 1.9 mol of gaseous ammonia at 2.8 bar and 298 K?
asked by Anonymous 
Politics
What is the history of the formation of Democratic Socialism? Can you please provide links?
asked by zainab 
PreCalculus
The profit in dollars in producing x items of some commodity is given by the equation P=−11x2+346.5x−2612.5. How many items should be produced to break even?(If there are two breakeven points, then enter the smaller value of x. Your solution may not
asked by Ann 
intro to chem
a 155.0 g piece of copper is dropped into a 250.0 g of water at 28.8 C, what is the final temp of the mixture?
asked by nicole 
physics
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by HELP(ANS PLS!!!!!!!!) 
science
You prepare a buffer solution from 10.0 mL of 0.100 M MOPS (3morpholinopropane1sulfonic acid) and 10.0 mL of 0.079 M NaOH. Next, you add 1.00 mL of 7.15 × 106 M lidocaine to this mixture Denoting lidocaine as L, calculate the fraction of lidocaine
asked by nick 
physics/algebra
A 74.0kN kN spaceship comes in for a vertical landing. From an initial speed of 1.00 km/s {\rm km/s}, it comes to rest in 2.40min min with uniform acceleration. What braking force must its rockets provide? Ignore air resistance.
asked by deb 
Math
A patient must exercise a MET level of 8. What grade is needed if the speed is 3 mph?
asked by Natasha 
Math
What is the MET level of a person that is running on a level treadmill at 6 mph?
asked by Natasha 
Math
Determine the MET level for each activity for a 70 kg person. a.) 18 steps/min, 25 cm/step b.) 6 mph, 12% grade c.) 750 kg m/m on a Monarch ergometer d.) Arm cranking at 350 kg m/min on a Monarch ergometer
asked by Natasha 
Find the value of K (Polynomial)
Dtermine the value of K such that 2 is cone root of the equation 2x^3+(K+1)x^2=4x^2 I tried it a couple of times and I keep getting the wrong answer. The answer is K=3.
asked by Alice 
Maths
Consider the line passing through two points P=(1,8) and Q=(−1,3). If the line also passes through point R=(15,a), what is the value of a?
asked by CHRIS 
Math
35/7 less than or equal to 7x/7
asked by Reed Elmore 
Math
If an individual wants a work of 1300 kg m/min with a cycling speed of 300 m/min, how much resistance is needed?
asked by Natasha 
Physics
A fireworks rocket is moving at a speed of 48.4 m/s. The rocket suddenly breaks into two pieces of equal mass, which fly off with velocities v1 and v2, as shown in the drawing. What is the magnitude of (a) v1 and (b) v2? In the image the two pieces are
asked by Connor 
News
what's the biggest challenge to newpapers today? would it be the internet?
asked by Blaze 
math
An internet company charges $30 a month. There is also a $30 installation fee. Is the number of months you can have internet proportional to the total cost?
asked by sam 
Chemistry
How many years will it take for 88g tritium to decay to an 11g sample?
asked by Michelle 
Geography (Ms. Sue)
Which has the higher population density: The United States or Russia and the Republic? Why? A: I believe the United States has the higher population density because ?
asked by Anonymous 
math
A quadrant has an area of 175m2. Find the length of its base
asked by Bob 
Science
Is water organic
asked by Kelley 
Math
If a 60 kg man is riding a Monarch ergometer at 50 rpm and the resistance is 2.0 kg, what is the power output?
asked by Natasha 
math
what is the answer in 5 x 1.1/2
asked by ezekiel 
Math
What is the MET level of a man running 7 mph, 5% grade?
asked by NM 
Language Arts
if you say, "The book is on top of the big slide." would "on top of" be a compound preposition or is on and of two different prepositions? Thanks...
asked by Brandi 
williams pkwy
how much money must be deposited now @ 6 % interest compounded semi annually to yield an annuity payment of $ 4000 at the end of each six month period for a total of five years
asked by christine 
Math
A 154pound woman walks at 3.0 mph 0% grade for 5 min, runs at 5.5 mph 5% grade for 32 min. What is her total caloric expenditure?
asked by NM 
physics(*URGENT*)
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30 ∘. We throw a stone with initial speed v0=20 m/s at an angle α= 35 ∘. The gravitational acceleration is g=10 m/s2. (See
asked by Anonymous 
Mathematics
What stepping rate is needed if a person wants to work at a Vo2 of 45 mL/kg/min using a bench that is 34 cm high?
asked by Natasha 
Mathematics
If a 75 kg person pedals a Monarch leg ergometer at 50 rpm, how much resistance is needed to work at a level of 11 METs?
asked by Natasha 
Easy math
Can someone give me just four random rational numbers (decimal or fraction) between the numbers of 1, and 1?
asked by Person 
Physics
A force applied to an object of mass m1 produces an acceleration of 3.10 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 2.00 m/s2.
asked by Abd 
Science
When investigate if chlorophyll is necessary for photosynthesis why is the leaf rinse with tap water?
asked by Juanita 
american history
. Which of the following was the primary cause of the Balkan Wars conducted during the Clinton administration? A. The rise to power of Slobodan Milosevic in Serbia B. Muslim activism in Bosnia C. The UN peacekeepers' inability to stem ethnic cleansing D.
asked by carolyn 
Maths
Given that −24
asked by CHRIS 
English
Jessy heard a cat cry. (Did the cat weep or shout according to the sentence?)
asked by rfvv 
Maths
Let y=ax+b be the equation of the line with xintercept 2 and yintercept −12. What are a and b values?
asked by CHRIS 
Math Calculator Question
How would I plug the following formula in a TI30X calculator: P(5)= (10 C 5)(0.20^5)[0.80^(105)] When I try to do it, I get 0.000104858, but that is not the correct answer.
asked by Nick