Questions Asked on
November 4, 2012

English
What grammatical structure is the italicized portion of the sentence? 1. (Headed by a senior), the group drew up rules for School Spirit Week.  nominative absolute 2. My most valuable coin, (one from Spain), is worth more than $100.00.  prepositional
asked by Courtney 
Chemistry
According to the Star Trek "Fifth Interstellar Geophysical Conference Standard" version of the periodic table, there are 140 known elements. In what group of the periodic table would you place element 117, "topaline" which is reported to have been
asked by Anonymous 
Chemistry
What is the generic outer electron configuration for the alkali metals?
asked by Anonymous 
Physics
The carnival ride shown in Figure 718 has a 2.0 m radius and rotates once each .90 s a. Find the speed of the rider. b. Find the centripetal acceleration of the rider. c. What produces this acceleration? SOLUTIONS PROVIDED: a. 141 b. 98 c. Explain
asked by Troubled 
Chemistry
A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is
asked by Anonymous 
Calculus
Squares with sides of length x are cut out of each corner of a rectangular piece of cardboard measuring 3 ft by 4 ft. The resulting piece of cardboard is then folded into a box without a lid. Find the volume of the largest box that can be formed in this
asked by Allison 
chemistry
A fuel mixture used in the early days of rocketry is composed of two liquids, hydrazine (N2H4) and dinitrogen tetraoxide (N2O4), which ignite on contact to form nitrogen gas and water vapor. 2 N2H4 + N2O4 > 3 N2 + 6 H2O If 1.50 x 102 g of N2H4 and 2.00 x
asked by Sheree' 
physics
A coin rests 15.0 cm from the center of a turntable. The coefficient of static friction between the coin and turntable surface is 0.390. The turntable starts from rest at t = 0 and rotates with a constant angular acceleration of 0.630 rad/s2. (a) After
asked by Anonymous 
AP chemistry
How many moles of Cu are produced when 0.25 moles of Cu2Se are completely reduced by an excess of hydrogen gas?
asked by Tayler 
Physics
Racing on a flat track, a car going 32 m/s rounds a curve 56 m in radius. What is the force of friction needed for the car to round the curve without slipping?
asked by Christy 
physics
A fulcrum is placed under the center of a uniform 4.00m long, 3.00kg board. Child A has a mass of 42 kg. This child sits on the left end of the board; Child B has a mass of 26kg. Child B sits on the right end of the board. Where should child C (mass 21 kg)
asked by Joe 
Chemistry
How much heat is required to raise the temperature of 53.5g of water from its melting point to its boiling point?
asked by Bird 
chem
Consider 4.80 L of a gas at 365 mmHG and 20 c. . If the container is compressed to 2.90 L and the temperature is increased to 36 c , what is the new pressure, , inside the container? Assume no change in the amount of gas inside the cylinder
asked by hanah 
Chemistry
Which one of these samples contains the smallest number of molecules? a. 1.0 L of H2 at STP (0°C and 1atm) d. 1.0 L of N2 at 0°C and 800 torr b. 1.0 L of N2 at STP e. 1.0 L of He at STP c. 1.0 L of H2 at 20°C and 760 torr
asked by Brittany 
physics
A uniform, horizontal beam is 5.00m long and has a weight of 200N. The beam is hinged at one end to a wall. A 600N weight is attached to the order end of the beam. The beam is supported by cable at the end opposite the wall. The cable attaches to the wall
asked by Joe 
Chemistry
Express your answer as a chemical formula. 1.Cr^3 and Br^ 2. Fe^3+ and O^2 3.Hg2^2+ and CO3^2 4.Ca^2+ and CIO^3 5. NH^+4 and PO4^3
asked by Josh G. 
Chemistry
Consider the reaction when aqueous solutions of manganese(II) sulfate and barium bromide are combined. The net ionic equation for this reaction is:???
asked by Kristyn 
Chemistry
Lead has a melting point of 327ºC, its specific heat is J/g•deg, and its molar enthalpy of fusion is 4.80 kJ/mol. How much heat, in kilojoules, will be required to heat a 500.0g sample of lead from 23.0ºC to its melting point and then melt it?
asked by steph 
English
It is impossible to have an indirect object without a subject, transitive verb, and a(n) _____. noun preposition direct object intransitive verb
asked by Courtney 
Math
A frictionless spring with a 7kg mass can be held stretched 1 meters beyond its natural length by a force of 20 newtons. If the spring begins at its springmass equilibrium position, but a push gives it an initial velocity of 0.5 m/sec, find the position
asked by James 
Pre AP Physics
The earth exerts a force of 1400 N on an orbiting communications satellite that is 35 mi above the Earth. What is the magnitude of the force the satellite will exert on the earth? Answer in units of Newtons
asked by Jaycee 
Chemistry
Lead has a melting point of 327ºC, its specific heat is J/g•deg, and its molar enthalpy of fusion is 4.80 kJ/mol. How much heat, in kilojoules, will be required to heat a 500.0g sample of lead from 23.0ºC to its melting point and then melt it?
asked by steph 
physics
A golfer launches a golf ball off a tee that has been raised 24.8 meters off the ground. If the golfer strikes the ball with a velocity of 26.5 m/s at an angle of 45.8 degrees, how far will the ball carry in the air before hitting the ground below?
asked by emily 
physics
A duck is floating on water with 26% of its total volume submerged below the surface. If the duck has a mass of 2.6kg, what is the duck’s total volume? You must show all necessary work, the density of water is 1000kg/m3.
asked by Joe 
Statistics
A random sample of 384 people in a midsized city (city one) revealed 112 individuals who worked at more than one job. A second random sample of 432 workers from another midsized city (city two) found 91 people who work at more than one job. Find a 99%
asked by Huh 
Pre Calculus
(cotx)(cscx)+secx=(csc^2x)(secx) Please help to verify this trigonometric identity.
asked by Marie 
Chemistry
Methanol (CH4O) is converted to bromomethane (CH3Br) as follows: CH4O + HBr > CH3Br + H2O If 12.23 g of bromomethane are produced when 5.00 g of methanol is reacted with excess HBr, what is the percent yield?
asked by Brittany 
Math
Joan won a multimillion dollar lottery. She decides to give $1 000 000 of her winnings to charity. Her plan is to give 1/2 , or 2^1 , to charity in January, and then give half of the remaining amount in February, half again in March, and so on. a) What
asked by Anonymous 
Chemistry
How many molectules are in a 64.3 mg sample of tetraphosphorus decoxide, P4O10?
asked by Anonymous 
singapore moth
Place the following digits in the boxes so that the sum of the digits in each straight line is the same. This is like a crossword 3 boxes across and 3 boxes down then 3 boxes across and 3 boxes down using digits 1,2,3,4,5,6,7,8,9. please help with answer.
asked by lori 
College Physics
In 1986, the distance of closest approach of Halley’s comet to the Sun is 0.57AU. (1 AU is the mean EarthSun distance = 150 million kilometers.) The comet’s speed at closest approach is 54.97 km/s. (a) – By 1989, Halley’s comet had traveled to a
asked by johnathan 
chem 1A
Balance the following oxidationreduction reactions, which occur in acidic solution, using the halfreaction method. (Use the lowest possible coefficients. Include statesofmatter under the given conditions in your answer.) (a) Cu(s) + NO3‾(aq) →
asked by Anonymous 
statistics
The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 20 people reveals the mean yearly consumption to be 72 gallons with a standard deviation of 15 gallons. What is the 99% confidence interval?
asked by Anonymous 
Physics
A ball of mass 0.1 kg is suspended vertically from the ceiling with a "massless" string and brought to rest. The string is one meter long. When a force of 0.5N is applied 45 deg. below the horizontal, what will be the magnitude of the resulting angular
asked by Guy 
physics
You see an optical illusion of an everupward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stairclimber to push a wheelbarrow up
asked by Lance 
physics
A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.
asked by Joe 
Chem
A metal whose threshold frequency is 1.80×1015 s1 emits an electron with a velocity of 7.24×105 m/s when radiation of 2.13×1015 s1 strikes the metal.Use these data to calculate the mass of the electron.
asked by Taani 
statistics
The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 20 people reveals the mean yearly consumption to be 72 gallons with a standard deviation of 15 gallons. What is the 99% confidence interval for the population mean?
asked by Jelian 
Chemistry
Calculate the mass of CO2 emitted (in lbs) when 1 gallon of octane is burned
asked by Sara 
CHEM 1A
Balance the following oxidationreduction reactions, which occur in acidic solution, using the halfreaction method. (Use the lowest possible coefficients. Include statesofmatter under the given conditions in your answer. H3AsO4(aq) + Zn(s) → AsH3(g) +
asked by Anonymous 
earth
If you had a mole of M&M's, how many times could you cover the surface of the earth ?
asked by Anonymous 
chem1A
Balance the following oxidationreduction reactions, which occur in acidic solution, using the halfreaction method. (Use the lowest possible coefficients. Include statesofmatter under the given conditions in your answer.) (b) Cr2O72(aq) + Cl ‾(aq)
asked by Anonymous 
physics work and newton
A 2.0 kg object starts from rest from the top of an inclined plane that makes an angle of 30 degrees with the horizontal and has a rise of .4m. It slides down the inclined plane and at the bottom has a kinetic energy of 60J. Ignore friction and use g =
asked by naf 
statistics
In one town 76% of adults have health insurance, find the probability that 8 adults selected at random from the town all have health insurance. would it be unusual to select 8 people and find they all have health insurance. and why?
asked by nicole 
Q&A Check Please, geo 7th grade
Many of the mineral deposits and oil reserves in Nunavut, the Yukon, and the Northwest Territories have not been developed because a. environmental laws prohibit the mining of land in these territories. b. native Inuit refuse to give up their lands. c. the
asked by rawr... im a dinosaur.... rawr 
physics work and newton
A person of mass 84kg is at rest at the bottom of an inclined plane that makes an angle of 30 degrees with the horizontal. he walks up the inclined plane through a certain distance and has a speed of 0.40 m/s. How much net work has been accomplished in
asked by naf 
Math
The distance between two towns on a map varies directly with the actual distance between the towns. Seven and a half inches on the map represents 150 miles. What is the actual distance represented by 11 inches on the map?
asked by M 
Chemistry
Au^3+ + 3e^ > Au Is this oxidation or reduction? Which reactant has been oxidized? Au3+ (aq)+ 3Na(s)>3Na^+(aq)+Au(s) 2.Which reactant has been reduced 3.What is the reducing agent? 4.what is the oxidizing agent? I am having a hard time understanding
asked by kourtney 
physics
The wind exerts a force of 305 N North on a sailboat, while the water exerts a force of 123 N West on the sailboat. What is the magnitude of the net external force on the sailboat? Answer in units of N
asked by Anonymous 
physics
A 0.112 kg meterstick is supported at its 38.6 cm mark by a string attached to the ceiling. A 0.655 kg mass hangs vertically from the 4.74 cm mark. A mass is attached somewhere on the meterstick to keep it horizontal and in both rotational and
asked by Krystal 
physics
A 2000 kg truck is at rest at a stop sign. A 1100kg car collides headon with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?
asked by Joe 
Physics B
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). Find the
asked by Mary 
chemistry
2 Al + 3 S > Al2S3 In an experiment 10.0 g Al is combined with 15.0 g S. If the reaction continues until one reactant is totally consumed, which reactant would be in excess and how many grams would be unreacted?
asked by Sheree' 
Chemistry
2 CH3Cl + Si > (CH3)2SiCl2 If 170 g of CH3Cl and 143 g of Si are mixed together, what is the maximum amount (in grams) of (CH3)2SiCl2 that can be formed?
asked by Sheree' 
Narrative Essay
Could someone give me some good tips in writing a narrative essay about a certain memory or experience? Tips like, how to realize when there's too much detail and what are common faults in a highschooler's narrative?
asked by Claire 
chemistry
A student determines the zinc content of a solution by first precipitating it as zinc hydroxide, and then decomposing the hydroxide to zinc oxide by heating. How many grams of zinc oxide should the student obtain if her solution contains 42.0 mL of 0.566 M
asked by Anonymous 
chemistry
a 55g aluminum block initially at 27degrees C absorbs 725J of heat. What is the final temp. I know I need to use the equation q=m*Cs*Delta T but I cannot figure out how to rearrange the equation to isolate Tf to get the answer. Thanks for any help.
asked by Dee 
Math
In a lightning storm, the number of seconds between the flash and the bang varies directly with the number of miles you are from the lightning. It takes 15 seconds for the thunder sound to reach you from lightning that is 3 miles away. If the thunder sound
asked by M 
CHEM 1A
Balance the following oxidationreduction reactions, which occur in acidic solution, using the halfreaction method. (Use the lowest possible coefficients. Include statesofmatter under the given conditions in your answer.) Br ‾(aq) + MnO4‾(aq) →
asked by Anonymous 
Physics
Janet jumps off a high diving platform with a horizontal velocity of 1.65 m/s and lands in the water 1.8 s later. How high is the platform? The acceleration of gravity is 9.8 m/s2. How far from the base of the platform does she land? Answer in units m
asked by Braedon 
multi step equations
Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds Blake has. If Blake has 25 cds, how many cds does Mary have?
asked by paul 
physics
A 0.112 kg meterstick is supported at its 38.6 cm mark by a string attached to the ceiling. A 0.655 kg mass hangs vertically from the 4.74 cm mark. A mass is attached somewhere on the meterstick to keep it horizontal and in both rotational and
asked by Krystal 
physics
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless
asked by jim 
algebra
If $1000 is invested in an account that earns 11.75%, compounded annually, what will the account balance be after 12 years?
asked by sara 
Q&A Check Please, geo 7th grade
Which of the following is an accurate statement about the economy of the Atlantic Provinces? a. Tourism is the region’s major economic activity. b. A recent economic slump has resulted in a large decline in the population of the region. c. Forestry and
asked by rawr... im a dinosaur.... rawr 
Physics
A small 0.469kg object moves on a frictionless horizontal table in a circular path of radius 1.42 m. The angular speed is 6.31 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the
asked by Ben 
Algebra
An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.
asked by Alisha 
physics
A 20.7 cm screwdriver is used to pry open a can of paint. If the axis of rotation is 2.25 cm from the end of the screwdriver blade and a force of 29.3 N is exerted at the end of the screwdriver’s handle, what force is applied to the lid? Answer in units
asked by Krystal 
physics
A team of dogs drags a 119 kg sled 2.1 km over a horizontal surface at a constant speed. The coeﬃcient of friction between the sled and the snow is 0.172. The acceleration of gravity is 9.8 m/s 2 . Find the work done by the dogs. Answer in units of kJ
asked by Anonymous 
Healthcare Law & Ethics
why is the current health care system is in turmoil? Identify one or two major problems of health care and analyze the impact of the problem(s) on patients and the community. Describe the benefits and risks of national health insurance.
asked by Lee 
physics
A 2000 kg truck is at rest at a stop sign. A 1100kg car collides headon with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?
asked by Joe 
physics
Find the heat flux due to radiation from a gasoline pool fire whose flame is 3 m tall with a 1 m diameter, and it is 3.5 m away from a target fuel. Assume e = 0.98 with a flame temperature of 1,300 K. Solve this problem by determining the configuration
asked by doris 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous 
english
What does John say is the one rule in his and Henry’s class? (1 point)
asked by Anonymous 
physics
Bill the firefighter stands on an 8 meter ladder of weight 355 Newtons leaning against a smooth vertical wall. The ladder makes an angle of 50 degrees with the horizontal floor. The wall cannot provide any frictional force only a normal force. All
asked by Anonymous 
chemistry
The equilibrium constant Kp for the following equilibrium is 33 at 298 K. What is the value of Kc at this same equilibrium at 298 K
asked by Brun 
physics
A centrifuge in a medical laboratory rotates at an angular speed of 3300 rev/ min. When switched off, it rotates through 59.0 revolutions before coming to rest. (a) Find the angular speed in rad/s.
asked by Anonymous 
Chemistry
nitrogen gas is at 2.00. c, 2.00 atm pressure and occupies a volume of 10.01. Assume nitrogen is an ideal gas, how many moles of the gas are present?
asked by Tomi 
physics
A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 18.0° with the horizontal. A 22.0 kg piece of luggage is
asked by Anonymous 
Physics Help, Please!
When a car goes around a curve (without skidding), on a level road, Select one: a. no friction force is needed because the car simply follows the road. b. the friction force of the road on the car increases when the car’s speed decreases. c. the friction
asked by Michael 
singapore math
My 3rd grade son get this math problem. It states that John thinks of a 3digit number. What is his number? Use the clues below to find John's number. Every digit is different. The sum of all thedigits is 19. The difference between the hundreds digit and
asked by lori 
Sociology
That a judge has to issue a warrant for a household search derives from ____________. a) probable cause b) substantive law c) procedural law d) mala en se law I believe the answer is (c)
asked by Tammy 
Math
An 8ounce weight stretches a spring 10 cm. How much weight will stretch the spring 15 cm?
asked by M 
physics
A 2000 kg car is rolling at 2.0 m/s. You would like to stop the car by firing a 12 kg blob of sticky clay at it. How fast should you fire the clay? i keep getting 25.8 but apparently that isn't right so i'm at a loss
asked by kev 
physics
two electric charges +10 microC and 20microC are located .35 m apart how much work is required to double the distance between them?
asked by Grane 
physics
Part of a rollercoaster ride involves coasting down an incline and entering a loop 27.0 m in diameter. For safety considerations, the roller coasters speed at the top of the loop must be such that the force of the seat on a rider is equal in magnitude to
asked by Anonymous 
calculus
A 13 foot ladder leaning against a wall makes an angle of degree radians with the ground. The base of the ladder is pulled away from the wall at a rate of 2ft/sec. How fast is degree changing when the base of the ladder is 5 feet way.
asked by ron 
maths
2. A bar of uniform section is 81.4cm long and weighs 4.45 kg. A weight of 12.8 kg is suspended from one end. The bar weight combination is to be suspended from a cable attached at the balance point. a)Determine how far from the weight should the cable be
asked by david 
physics
A team of dogs drags a 119 kg sled 2.1 km over a horizontal surface at a constant speed. The coeﬃcient of friction between the sled and the snow is 0.172. The acceleration of gravity is 9.8 m/s 2 . Find the work done by the dogs. Answer in units of kJ
asked by Anonymous 
aberdeen
To avoid plagiarism in your written research paper, you must provide a citation for which of the following?
asked by Anonymous 
Physics LAST QUESTION
A beetle whose mass is 2 g sits on a turntable at a distance of 12 cm from the center. The turntable is rotating at 33 rpm. (a) What are its acceleration and the centripetal force on it? a =______ m/s2 Fc=_____ N (b) What is the interaction that provides
asked by arcos15 
math
Teresa babysits for $4.50 an hour. Make a table showing how much money she will make over time.
asked by cali 
physics
A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.
asked by Joe 
business
A production run of toothpaste requires a fixed cost of $100,000. The variable cost per unit is $3.00. If 50,000 units of toothpaste will be sold during the next month, what sale price must be chosen in order to break even at the end of the month?
asked by Anonymous 
Math
One day we decidid to drive from town A to town D.In order to get there,we had to drive through town B and C.It is ten miles farther from town A to town B than it is from town B to town C.It is ten miles farther from town B to town C than it is from town C
asked by Caleb 
physics
The average distance separating Earth and the Moon is 384,000 km. A 2.6x104 kg spaceship located halfway between them. (b) What is the total potential energy of the ship?
asked by Anonymous 
chem 1A
Balance the following oxidationreduction reactions, which occur in acidic solution, using the halfreaction method. (Use the lowest possible coefficients. Include statesofmatter under the given conditions in your answer.) Mn2+(aq) + NaBiO3(s) →
asked by Anonymous 
Math
in the number 7,725,which places contain digits where one digit is ten times greater than the other?
asked by Brooklynn 
calculus
let f(x) = 2x^55x^4 find open intervals on which f is a) increasing b)decreasing Find values of x at which f has c) relative max and min find open intervals d) concave upward e) concave downward c) find the inflection points of f
asked by Martha 
statistics
A random sample of 250 men yielded 175 who said they'd ridden a motorcycle at some time in their lives, while a similar sample of 215 women yielded only 43 that had done so. Find a 99% confidence interval for the difference between the proportions of men
asked by John 
Psychology  Check please?
According to Solomon Asch's study of conformity, which of these situations would not increase conformity? feeling insecure feeling you have reached your potential feeling impressed by a group's status feeling that others are watching you feeling that
asked by Lily 
writing
PLEASE PROOF READ IT WILL BE DOUBLE SPACED WHEN I SUBMIT IT. In approximately 200–350 words, using compare/contrast strategies, discuss the benefits and/or advantages of shopping online, rather than shopping in a store. The Benefits of Online Shopping
asked by AMW 
chemistry
Given the reaction: H2SO4 = 2NaOH > NaSO4 = 2H20. Determine the # of moles of sulfuric acid id needed to completely react with 2.3 L of 0.5 M of NaOH. Then determine the concentration of the solution if 3.0 L of it are used instead.
asked by sarah 
Chemistry
a 9.85 g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3 (s) and liberating 57.8kJ of heat at constant pressure. What is the identity of the metal? 4M(s) + 3O2(g) yields 2M2O3(s)
asked by Kelly 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous 
Calculus
A particle is moving along the curve . As the particle passes through the point , its coordinate increases at a rate of units per second. Find the rate of change of the distance from the particle to the origin at this instant.
asked by Anonymous 
physics
A 7.45g bullet is moving horizontally with a velocity of +348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is
asked by greg 
Calculus
At a given moment, a plane passes directly above a radar station at an altitude of 7 miles. (a) If the plane's speed is 400 mph, how fast is the distance between the plane and the station changing half an hour later? (b) How fast is the distance between
asked by Anna 
Math
How would you solve these questions using Trigonomic Identities? sin^2x = tan^2x/1+tan^2x sinx+cosx/tanx = 1/cosxtanx
asked by O 
College Physic
The tub of a washer goes into its spin cycle, starting from rest and gaining angular speed steadily for 9.58 s, at which time it is turning at 3.89 rev/s. At this point, the person doing the laundry opens the lid, and a safety switch turns off the washer.
asked by Kevin Ngu 
phsyics
A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?
asked by Anonymous 
Precal
Find the exact values of tangent and cosecant for angle theta in standard position whose terminal side passes through the point (16,4)
asked by Em 
physics
Three lead balls of mass m1= 13kg, m2= 26kg, and m3= 9.6kg are arranged as shown in the figure below. Find the total gravitational force exerted by balls 1 and 2 on ball 3. Be sure to give the magnitude and the direction of this force
asked by Anonymous 
calculus
At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per
asked by Anonymous 
calculus
At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per
asked by Anonymous 
physics
Two particles moving along parallel paths in the same direction pass the same point at the same time. Particle A has an initial velocity of 8.7 m/s and an acceleration of 1.2 m/s^2 Particle B has an initial velocity of 4.3 m/s and an acceleration of 7.7
asked by Savannah 
Literature
Please help me understand this, thanks. The way a topic is handled is called its treatment. Review the chart you completed as you read the speech. Then describe Obama's treatment of his family in the speech. By speech, it's referring to Out of Many, One.
asked by Emma 
physics
Three particles of masses 14 kg, 21 kg, and 69 kg are located at the vertices of an equilateral triangle of sides 7 m. A)Find the xcoordinate of the center of gravity of this system with respect to a coordinate system with origin at the 14 kg particle and
asked by maura 
trig
find the exact value of sinu/2, given that cosu=4/5 and pi/2less than u less than pi
asked by monica 
Chemistry
What is the maximum number of electrons in an atom that can have the following quantum numbers? n= 4 ml= 3 ms= +1/2 How would you figure that out given those information? What's the process of that?
asked by Ezra 
Personal Dimensions of Education
Select the sentence that is punctuated correctly 1 The neighors' new dog is small, quiet, and sky. 2 The neighbors' new dog is small quiet and shy. 3 The neighbors' new dog is, small quiet and shy
asked by Jackie 
Math
A no. Plus twothird of itself plus one half of itself plus oneseventh of itself equals 97.find the no. Ans is42
asked by Simran kaur 
Culturally Diverse Background
Will someone check my answers. 1.During a class fingerpainting activity,Doresha appeared perplexed by the teacher's question, What are you doing, Doresha did not respond quickly or with ease. Why did Doresha respond to this eventcast the way she did? a.
asked by anna 
science
How long would it take a radio wave with a frequency of 5.1 × 105 Hz to travel from Mars to Earth if the distance between the two planets is approximately 8.00 × 107 km?
asked by Anonymous 
physich
A proton that has a mass m and is moving at 280 m/s in the + direction undergoes a headon elastic collision with a stationary oxygen nucleus of mass 16m. Find the velocities of the proton and the oxygen nucleus after the collision.
asked by Anonymous 
physics
two electric charges +10 microC and 20microC are located .35 m apart how much work is required to double the distance between them?
asked by Grane 
Logic
Draw a flowchart for a program that reads a date in an 8digit sequence (month, day, year) and determines if the date is a valid date. ignore leap year. Assume Feb has 28 days, and establish a table of days in a month so that you can access the appropriate
asked by Jack 
Psychology
Dr. Thompson asks his patient to describe an inkblot. Which technique does he use? Trait/type Projective Forced choice Simulation Personality inventory
asked by Georgie 
Chemistry
Calclte the number of moles of ethane needed to produce 10.0 grams of water according to the following reaction.
asked by sharon 
Business
my group has done a project on workplace violation, and I'm assigned to write an executive summary. I'm not familiar with the summary and don't know how to write it correctly. Could you tell me what the executive summary is, what I should include on the
asked by Vivian Tran 
Chemistry
The temperature of a sample of water increases from 20.1°C to 45.7°C as it absorbs 5675 J of heat. What is the mass of the sample?
asked by Cassie 
physics
Assume you are agile enough to run across a horizontal surface at 8.10 m/s on an airless spherical asteroid of uniform density 1.9x103 kg/m3, independently of the value of the gravitational field. To launch yourself into orbit by running, what would be (a)
asked by Anonymous 
Poetry/ENG 142/Ivy Bridge
I'm trying to form an arguement based on the following poem does anyone have any ideas on how I could do that effectively? TO HELP THE MONKEY CROSS THE RIVER, which he must cross, by swimming, for fruit and nuts, to help him I sit, with my rifle, on a
asked by Connie 
physics
a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the
asked by Matt 
Physics
A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have without the
asked by Emily 
math
p varies directly as the square of m inversely as n. if p =200 when m=5 and n=1/2 find p when m=6 and n=2
asked by debra 
7th grade science ASAP please!
1. Which of the following form the main components of our body cells? (1 point) carbohydrates and proteins fat and phosphorous proteins and iron nucleic acids and calcium 2. Organic compounds always contain______. (1 point) water oxygen nitrogen carbon 3.
asked by Delilah 
Chemistry
A 5g mn sample was dissolved in 100ml water. If the percentage of M (At wt =55g/mol) in the sample is about 5%. What volume is needed to prepare 100ml of approximately 3.0 x 103 M solution Who helps for me. The right answer 6.7ml
asked by Fai 
maths
A large canal will have a crosssection in the shape of an isosceles trapezoid. The top will be twice as wide as the bottom, and the depth will be 8.00 m. Because of the cost of the building materials, the bottom and two slopes sides are to measure 14.0 m
asked by david 
Physics
A train is moving parallel and adjacent to a highway with a constant speed of 27 m/s. Initially a car is 41 m behind the train, traveling in the same direction as the train at 39 m/s and accelerating at 4 m/s 2 . What is the speed of the car just as it
asked by Savannah 
Essay Titlle
I am trying to figure out titles for my essay. I want the essay about family, being brave when things are going down, having faith when things are a blurr, or about being courageous when things are very tough. It's all the same, but please help me pick a
asked by Losa 
Chemistry
Why is energy released in order to react two atoms to form a compound? For instance the reaction between sodium metal and chlorine gas is highly exothermic and produces NaCl(s). Meanwhile when an atom loses an electron, it will be endothermic. Can someone
asked by M 
chemistry
The equilibrium constant Kc for the reaction C D + E is 7.90 * 10^5. The initial composition of the reaction mixture is [C]=[D]=[E]=1.10*10^3. What is the equilibrium concentrations of C, D, and E? C=? D=? E=?
asked by Brunette 
math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp
asked by karin 
Math
x2 + bx + c and ax2 + bx + c.
asked by Trina 
Math
x2 + bx + c and ax2 + bx + c.
asked by Trina 
Physics Help, Please
A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have without the
asked by Michael 
Calculus
Find the Optimum value of the function f(x)=2x^2+6x10 and also state if the function attains a maximum or minimum.
asked by Daniella 
Math
The numerator of a fraction is less than its denominator is increased by 9 and the numerator by 2,the fraction bcms twothird.find d fractn. Ans is 26/33
asked by Simran kaur 
writing
how did you feel when someone showed you respect and kindness
asked by Anonymous 
algebra
When an automobile accelerates, the power, P, needed to overcome air resistance varies directly with a power of the speed, v P=kv^n Use data to find the scalling exponent and the constant of variation v 10 20 30 40 p 355 2840 9585 22,720
asked by Rebecca 
English
Bias can be identified as favourable or unfavorable. What are the unfavourable bias for: 1. dog 2. growling 3. darkness 4. expressed 5. viewpoint 6. frankly 7. questioned 8. group 9. investors 10. developing 11. new 12. trusting Examples are: smart 
asked by Ronan 
geometry
Mr. Ben has 100 meters of fence to enclose his chicken pen. He wants to use a shape that will give him the maximum area for his pen. Which shape should he use?
asked by Hibiscus 
Psychology
Mrs. Smith has achieved her goals and is striving for personal fulfillment. According to Maslow, where is she on the hierarchy of needs? biological needs aesthetic needs physiological needs belonging needs selfactualization needs
asked by Georgie 
physics
A rock is thrown upwards from the top of a 100m cliff, on the way down the rock misses the edge of the cliff and continues falling to the ground. What is the distance that the rock travelled?
asked by dhkk 
Physics
Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Object A has a mass of mA = 17.9 kg and an initial velocity of = 8.82 m/s, due east. Object B,
asked by Tim 
math
how many ounces of liquid can be contained in a glass jar that is 5" tall and 3" in diameter (1 gallon =231 cubic inches)
asked by david 
physics
Assume you are agile enough to run across a horizontal surface at 8.10 m/s on an airless spherical asteroid of uniform density 1.9x103 kg/m3, independently of the value of the gravitational field. To launch yourself into orbit by running, what would be (a)
asked by Anonymous 
Math 109
How many ways can the manager of a baseball team make up the batting order, assuming the pitcher bats last?
asked by Anonymous 
Algebra
An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.
asked by Alisha 
calculus
the edges of a cube are increasing at the rate of 5 in/min. How fast is the volume changing when each side is 4 in.
asked by dalton 
phyicis
a vending machine ate another students dollar. the student had enough. he dropped the vending machine off a 20 m cliff. at the same time his buddy at the bottom of the cliff throws a grenade straight up towards the vending machine. the grenade strikes the
asked by Matt 
English
What can you say about how Odysseus is cunning in the cyclops cave?
asked by Anonymous 
Economics
(This homework question was removed due to a copyright claim submitted by K12 Inc.)
asked by Josh 
crime and society
The Fair Sentencing Act of 2010 accomplished all of the following except: a) It reduced the powder/crack cocaine disparity. b) It eliminated mandatory minimum prison sentences. c) It made sentencing guidelines advisory, not mandatory. d) It applied new
asked by Tammy 
chemistry 11
if I was asked to set up a procedure that will allow me to check the concentration of aqueous Co2+ ions in a reaction vessel every 15 mintues, what could I do to quickly and accurately determine the concentration of colbalt ions in the solution?
asked by Anna 
physics
A woman lifts her 100N child up one meter and carries her for a distance of 50 m to the child’s bedroom. How much work does the woman do?
asked by jeo 
Macroeconomics
Wondering if I am doing this correctly?? If net taxes are increased by 3 billion dollars by how much would we expect real GDP to change? My answer is: d) If the government increases taxes by 3 billion dollars we would use the tax multiplier to determine
asked by Isis 
maths
3.An 1145 L tank contains 295 L of water and is being filled with brine from a full 1280 L tank at a rate of 1.55 U.S. gallons every 6 seconds. Will the smaller tank ever contain three times the amount of liquid as the larger tank? If so, when? If not,
asked by david 
Math
The mean of a binomial distribution when n=64 and p=1/2
asked by Scoot 
management
Can someone help me find the information needed to answer this question? How is recent economic trends influencing merck
asked by Patiance 
Physic
Can some one help me with this question. A uniform 119.0 cm long, 78.0 gram wooden rod is suspended from it midpoint. On one end of the rod, a mass of 350 g is attached, and on the other end a mass of 150 g is attached. A third mass of 225 g is attached at
asked by Mary Pinzon 
physics
A pendulum has a length of 1.35m. What mass should be placed on a spring with a spring constant of 10.0N/m to have oscillations with the same period as the pendulum.
asked by Joe 
Physics
Dad (M = 84kg) is pushing his son (m = 14kg) in a box (negligible mass) across the living room rug at a constant velocity. He is pushing on the box with a force of 200N directed at 37° below the horizontal. The normal force exerted by the rug on the box
asked by Michael 
Spanish 3 preap
I am curently using ser vs. estar. Can you tell me when I am suppposed to use these?
asked by Stephanie 
Pre calc
A set of 500 values has a normal distribution. The mean of the data is 24 and the standard deviation is 2. Find the range about the mean which includes 50% of the data.
asked by Brandon 
chemistry
At 860.0 deg celsius, the equilibrium constant Kp for the synthesis of ammonia (below) is 3.35 * 10^5. What is the value of Kc? N2(g) + 3H2(g) 2NH3(g)
asked by Brun 
Capacitor
A parallel plate capacitor with plates of area 320 cm.^2 is charged to a potential difference V and is then disconnected from the voltage source. When the plates are moved 0.3 cm. farther apart, the voltage between the plates is increased by 152 V. What is
asked by andrew 
math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp
asked by karin 
math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp someone helped with this earlier (steve) but I still don't understand how you got your answer...can you please explain further?
asked by karin 
physics
A paperweight weighs 6.9N in air. When it is completely submerged in water it appears to weigh 4.3N. A) What is the volume of the paperweight? B) What is the density paperweight? The density of water is 1000kg/m3.
asked by Joe 
Critiques cont'd
So, if I spend about 56 minutes planning what else would I write except for a couple of bullet points about my two main examples? Would it just be this: ex1: _____ something something ex2: _____ something something Is that it? Also, I think I need
asked by Sanya 
Math Vocab
I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.
asked by Emma 
Physics
A brick is thrown upward from the top of a building at an angle of 27.6 above the horizontal and with an initial speed of 13.9 m/s. The acceleration of gravity is 9.8 m/s. If the brick is in ﬂight for 3 s, how tall is the building?
asked by ferras 
Math
When you scuba dive, the added pressure due to the water varies directly with your depth. At 20 feet, the added pressure is about 9 pounds per square inch. a) If an amateur diver can safely stand an added pressure of 30 (psi), how deep could he dive? b) A
asked by M 
Physics
To win the game, a place kicker must kick a football from a point 19 m from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 16 m/s at an angle of 59.8 from the horizontal. The
asked by ferras 
macroeconomics
the price of hot dogs changes by 22% and the quantity of hot dogs demanded changes by 25%. This indicates that demand for hot dogs is a.elastic b.inelastic c.unit elastic d.perfectly elastic
asked by shereeka 
physics
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at
asked by Anonymous 
physics
A digital audio compact disc carries data along a continuous spiral track from the inner circumference of the disc to the outside edge. Each bit occupies 0.60 mm of the track. A CD player turns the disc to carry the track counterclockwise above a lens at
asked by Anonymous 
Social studies
1. How many times do children have a sleepover party a year? 2. In what season do they have a sleepover party usually? 3. Do all parents pick up their children next morning? (Would you answer the questions? Thank you.)
asked by rfvv 
Maths
Let f(x) = √(x^2 + 1)  1 (taking the positive real square root, as usual). When x = 10^3, compute f(x), working to 5 significant figures at every stage of the calculation. Show (algebraically) that f(x) =(x^2)/[√(x^2 + 1) +1]. Use this expression for
asked by Jade 
ersonal Dimensions of Education
Help........... Select he sentence that is punctuated correctly. 1.Zora's lemon trees produces too much fruit She gives them away therefore, to her friends and neighbors. 2. Zora's lemon tree produces too much fruit. The gives them aay, therefore to her
asked by Jackie 
physics
A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0°?
asked by Anonymous 
Chemistry
Find the number of mg Na2co3 FW = 106g/mol required to prepare 500ml of 9.2ppm NA solution. ppm = mg/L 9.2mg/1000ml x= 0.0092 x 500ml = 4.6mg x 23 = 106mg The right answer 10.6mg NA weight = 23 Who helps me to solve it for me.
asked by Fai 
Math word problem
Ryan collected 43 candy bars on Halloween he gave 15 of them to his father andhe gave his mother ten less candy bars than he gave his father. Then Ryan ate 4 of the candy bars . Hwo many Andy bars does he have left ? I got 19
asked by Marco 
calculus
Find critical points of f, and the extrema of f on the given interval. a)f(x) = x^410x^2; [0,3] b)f(x) = (x/e^x); [0,2]
asked by carter 
Math (Calculus)
At 2:00 pm boat K is 25 km north of boat L. If boat K is sailing 5 km/h west and boat L is sailing north at 20 km/h, what is the rate at which the distance between the two boats in changing at 2:30?
asked by Steven 
Physics Help, Please
In the final stages of the landing process, a spaceship decelerates at a constant rate of 5.3 m/s2 heading towards the Earth. A 3kg lamp is hanging straight down, attached to the ceiling of the ship cabin by a chain. What is the tension in the chain?
asked by Michael 
physics
A wheel has a radius of 6.6 m. How far (path length) does a point on the circumference travel if the wheel is rotated through an angle of 52.0 rad?
asked by Anonymous 
Psychology  Check please?
Gertie can feel roaches running over her feet even though they are not there. What is this called? a fixation a hallucination an illusion an eidetic image a phobia I would think that Gertie would be having some sort of a hallucination..
asked by Lily 
algebra
A grandmother is looking for a plan to finance her new grandchild’s college education. She has $25,000 to invest. Search the internet and locate a longrange investment plan, CD, Savings Bond, etc, for the grandmother. The plan is to earn compound
asked by Kathy 
chemistry
Given the reaction: H2SO4 = 2NaOH > NaSO4 = 2H20. Determine the # of moles of sulfuric acid id needed to completely react with 2.3 L of 0.5 M of NaOH. Then determine the concentration of the solution if 3.0 L of it are used instead.
asked by sarah 
Anthropology
Caste systems are most common in societies
asked by Anonymous 
physics
suppose the water at the top of niagara falls has a horizontal speed of 2.7m/s just before it cascades over the edge of the falls. at what vertical distance below the edge does water reach a horizontal distance of 4 m away
asked by Anonymous 
English 8R  Homework Check (plzzzz read)
Is my summary good??? (The Princess Diaries by Meg Cabot) Mia Thermopolis is an average urban ninth grader. She lives in Greenwich Village with a single, liberal mom who is a semifamous painter. The most exciting things she ever dreams about are kissing
asked by Laruen 
math
Joel has twice as many cds as Mary has. Subtracting 7 from the number of cds Joel has and dividing by 3 equals the number of cds Blake has. If Blake has 25 cds, how many cds does Mary have?
asked by paul 
Physics
9)A car, moving along a straight stretch of highway, begins to accelerate at 0.0153 m/s 2 . It takes the car 29.2 s to cover 1 km. How fast was the car going when it ﬁrst began to accelerate? Answer in units of m/s
asked by Savannah 
Math
The odds are 3 to 5 in favor of drawing a blue marble in one random drawing from an urn containing only red and blue marbles. There are more than 100 marbles in the urn. what is the minimum number of red marbles that there could be in the urn?
asked by Carson 
Chemistry
I need to understand, which has more effect in inducing the reaction of silver salts. Intensity or wavelength?
asked by Jasmine 
ap chemistry
I have taken ap chemistry but I have language barrier and sometimes I don't get it and I am getting behind.We are already in chapter 9.I don't want to quit. What is the best way to improve and learn faster?Any practice I should do?What is the experience
asked by zoya 
Personal Dimenion of Education
The coordinating conjunctions that can be used to combine two complete sentences with a comma are 'for,and,nor,because,yet, so True or False
asked by Jackie 
physics
A 3.0 kg sphere moving to the right at 2.0m/s undergoes an elastic headon collision with a 2.0kg sphere. The 2.0kg sphere is initially at rest. What is the speed of each sphere after the collision?
asked by Joe 
College Physic
I am stuck on this question. Any help will be greatly appreciated! A 0.082 kg solid cylinder with a radius of 1.90 cm, is placed at the top of a 30º inclined plane of height 29.5 cm. If the inclined plane is not frictionless, and the cylinder does roll,
asked by Jennifer Hill 
SAT Essay Critiques
Mr. Pursley You have critiqued multiple essays of mine is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much, I really appreciate it.
asked by Sanya 
Science (Microbiology)
The "resistant" threshold for gemifloxacin is >1 mg/L while the "resistant" threshold for sulfamethoxazole is >512 mg/L. Explain why there might be this great disparity of values in resistance thresholds (512fold) for each antibiotic pharmacologically
asked by Ashley Strenke 
EnglishIII
I'm writing an essay and was wondering if this part was okay. I was eager for this day to end and summer begin. Despite my eagerness, I was excited about the “surprise” guest the school had booked to make this day special for our graduating class.
asked by Claire 
English 8R  Book Project
Is there any movies quotes about The Princess Diaries by Meg Cabot. I need it for my movie poster.
asked by Laruen 
science
give an example of a physical stimulus for touch, sight, and hearing. name the organs this sense is associated with.
asked by kayla 
business
what are Australia's major industries competitive issues? For example, the competitive issues of mining, manufacturing, tourism, agriculture and finance.
asked by allee 
ersonal Dimensions of Education
There should be commas around "however" in the following sentence: Dwayne had planned to take the last flight out to chicago. It was cancelled, however, because of bad weather (True or False)
asked by Jackie 
math
I need to use calculus to solve this word problem: Find all maximum and minimum values for f(x)= sin(x)+ cos(x) on [0, 2(3.14)] How do I do it?
asked by bob 
Economics
Graph A New Equilibrium: Y axis represents Quantity (hours per semester) 0, 25, 50, 75, 100, 125, 150 X axis represents Price of Tutoring (per hour) 0, 5, 10, 15, 20, 25, 30, 35, 40, 45, $50 Question: Determine the approximately size of market surplus or
asked by Sanford 
geography
john who lives at 35 degrees north and 120 degrees west regularly calls Geroge his business partnet at 2pm (John's local time) every day during July last year. George regularly recevied the calls at 10 pm ( his local time). throughout the month, George
asked by christina 
biology
purpose of the special sense organs
asked by jessica 
mathematics
A farmer buys a tracter for Rs 120000. he pays Rs 60000 cash and agrees to pay the balance in annual installments of Rs 5000 plus 12% interest on the unpaid amount. what will the tracter cost him?
asked by Edward 
algebra
7 nickels to 22 dimes
asked by jamie 
St.george high school
The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.
asked by Lynn 
Math
X/3=r
asked by Fiza 
Engineering Problem Solving
if a car can accelerate at 7 meters/second, what will its 060 mph time be?
asked by P.J. 
Math
Differentiate cos^2 x w/ respect to x
asked by Anonymous 
Math
Differentiate cos^2 x w/ respect to x
asked by Anonymous 
physics
In a paragraph, use the following words: Inertia, Acceleration, Kinetic Energy, and Newton's 1st Law to describe the physics at work during a car crash
asked by Nigear 
Math
Find the dy/dx of the equation y=e^x^2
asked by Anonymous 
physics
In a paragraph, use the following words: Inertia, Acceleration, Kinetic Energy, and Newton's 1st Law to describe the physics at work during a car crash
asked by Nigear 
Maths
Let f(x) = tan(x). What is the formula for the conditioning number of f? Evaluate this formula for x =(π/4), 1.01, 1.26, 1.51 (in radians, working to 3 signifi cant figures, the precision that is implicit in this data). Replace each of the expressions for
asked by John 
Physics
An arrow is shot at an angle 36 of with the horizontal. It has a velocity of 47 m/s. How high will the arrow go? The acceleration of gravity is 9.8 m/s
asked by ferras 
math
it is between 1 and 2 million.the first three digits are the same.the least possible digit is in the ones place.the hundreds digit is 1 more than the tens digit.the sum of the digits is21.
asked by deja 
Stats
What critical t value would be needed to construct a 90% confidence interval on a sample of size 22? 1.717 1.323 2.080 1.321 1.721
asked by etwetw 
Statistics
You have two independent samples of size 24 and 27. You conduct a hypothesis test and obtain a pvalue. Using the conservative method what would you use for the degrees of freedom for comparison? 24 27 23 26 49
asked by Huh 
decision making
Tom Garvey, your boss, is the director of highway safety for the state. Tom has two main problems. One is that there is never enough money in the budget to implement all the schemes his office proposes. The second is that many of the schemes are
asked by Vanessa 
Physics B
part 1 A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the coordinate system as follows: a 1.5 kg object at the origin, a 3.4 kg object at (0 m,1.8 m), and a 4.5 kg object at (4.2 m,0 m). THANK
asked by Mary 
physics
A toy race car starts from rest on a circular track of radius 4.30 m. The cars speed increases at the constant rate of 2.90 m/s2. At the point where the magnitudes of the centripetal and tangential accelerations are equal, determine (a) the speed of the
asked by Anonymous 
eco/365
what is sub optimization need an example of it to
asked by at 
Calculus
Inclusive of a 6.4% tax, a diamond ring sold for $2128.00. Find the price of the ring before the tax was added.
asked by Darlene 
Physic
A CD rotates from rest up to an angular speed of 32.40 radians per second in a time of 0.861 seconds. Determine the angle (in degrees) through which the disc turns while coming up to speed assuming that the tangential acceleration is uniform. I hve tried
asked by Janki Patel 
singapore math
Using these numbers to fiqure the problem. (120,30,90,60,50,40,160,80) The sum of two numbers is 190. What would the answer be? And the sum of their digits is 10.
asked by lori 
Calculus
Let F(x) = square root of X and [a,b]. Find all numbers c in (a,b) such that f'(c) = f(b)f(a)/ba
asked by April 
Grammar
Is this correct? We forgave each other after we had argued. Are the tenses correct?
asked by Anonymous 
biology
In which sequence did aerobes, anaerobes, chemolithotrophs and cyanobacteria evolve? What evidence is there to support your answer. If someone can answer please. I think its talk about how cyanbactoria evolve.
asked by john 
Physic (algebra base)
I need help with one of my last hw problem can you help me? A magnetic computer disk with a 4.03 cm radius is initially at rest. A small dot is painted on the edge of the disk. The disk accelerates at 500 rad/s2 for 1.76 s. How many revolutions has the dot
asked by Mary Ann Smith 
statistics
A random sample of 384 people in Dalto City, a midsized city, revealed 112 individuals who work at more than one job. A second random sample of 432 workers from East Dettweiler, another midsized city, found 91 people who work at more than one job. To
asked by John 
calculus
need some help im doin antiderivatives it has (2x^2)^4xdx i understand how to do it for the most part but i come up with 1/5(2x^2)^5+c the book has a answer of 1/10(2x^2)^5+c how what am i doing wrong
asked by kieran 
math
it is between 1 and 2 million.the first three digits are the same.the least possible digit is in the thousands place.the greatest possible digit is in the ones place.the hundreds digit is 1 more than the tens digit.the sum of the digits is 21.
asked by deja 
reading
why does it take so long after you answer my question?
asked by deja 
stats
if you know the mean and standard deviation, how do you determine the proportion that will and will not be included
asked by mary 
Physics Help, Please
A physics student is pulling on a 20 kg box that is sliding on the floor. The student applies a pulling force of 100 N using a rope at angle 30o from the horizontal. The coefficient of kinetic friction between the box and the floor is 0.4. The acceleration
asked by Michael 
math
3x^2+2xy+y^2=2 then the value of dy/dx at x=1 is?
asked by Daniela 
math(please help)
Allison, Ashley, and Becky weigh 124 kg altogether. Allison and Becky weigh 102 kg altogether. Allison and Ashley weigh 86 kg altogether. How much does each person weigh? please show your work.
asked by May 
Precalculas Math
how to find the exact value of: cos(9*pi/12)*cos(5*pi/12)+sin(9*pi/12)*sin(5*pi/12)
asked by Jon 
SAT Essay
Mr. Bob Pursley You have critiqued multiple essays of mine is there recurrent mistake that I make? What can I do to make it go from a 5 to 6? Thank you so much.
asked by Sanya 
MATH
A semiograph 300km from the epicenter of an earthquake recorded a maxximum amplitude of 5.3x10^2 um. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth)
asked by TEDDY 
precalculus
Use the elimination method to find all solutions of the system of equations. (Order your answers from smallest to largest x, then from smallest to largest y.) x − y2 + = 0 2x2+ y2 −9 = 0
asked by Ama 
calculus
Gravel is being dumped from a conveyor belt at a rate of cubic feet per minute. It forms a pile in the shape of a right circular cone whose base diameter and height are always equal to each other. How fast is the height of the pile increasing when the pile
asked by Anonymous 
algebra
A=P(1+r/n)^nt a) Suppose you deposit $3000 for 6 years at a 7% rate
asked by Doris 
math
the scle drawing of a close is 3 inches wide by 4.2 inches long. the original closet is 10 feet wide. how long is the original closet in feet? how long is the original closet in yards?
asked by Erick 
Microeconomics
If John's preferences are given by U(c,D)=log(c)+D where c is consumption and D is total donations and a wealthy individual sets up a matching fund campaign where John's total donation (D) is given by D=kd where k is the expansion factor and d is John's
asked by Shayna 
algebra
Suppose there are only enough tutors for 12 fifth graders to attend tutoring . What is the domain and range of the function in Y=.40x
asked by Andy 
chemistry
Fe(s) +Pb^2 (aq)>Fe ^2+ (aq) +Pb(s) which reactant has been oxidized
asked by jake