Questions Asked on
November 3, 2010

math grade 11
Determine the value of k for which the function f(x)= 4x^2 3x+2kx+1 has two zeros. check these values in the original equation? i cant figure out the answer to it. It says in the book that it is k 3.5,but i don't know how they got it.
asked by priya 
Tangent problem
For what values of a and b is the line 2x + y = b tangent to the parabola y = ax2 when x = 5?
asked by Michael 
AP Chemistry
Small quantities of hydrogen gas can be prepared in the laboratory by the addition of aqueous hydrochloric acid to metallic zinc. Zn(s)+2HCl(aq) > ZnCl2(aq)+ H2(g) Typically, the hydrogen gas is bubbled through water for collection and becomes saturated
asked by Anonymous 
AP Chemistry
A 1.00L gas sample at 100°C and 600 torr contains 50% helium and 50% xenon by mass. What are the partial pressures of the individual gas?
asked by Anonymous 
help!!! physics
you want to nail a 1.6 kg board onto the wall of a barn. to position the board before nailing, you push it against the wall with a horizontal force to keep it from sliding to the ground. (a) if the coefficient of static friction between the board and wall
asked by stephanie 
chemistry
Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n=3 to n=1 energy level, based on the Bohr theory. use the equation En= 2.18 x1018 J(1/n2)
asked by lavonne 
chemistry
What is the molecular, ionic, and net ionic equations for Copper(II) sulfate + sodium phosphate?
asked by Stacy 
Managerial Economics
Suppose that a firm is currently employing 10 workers, the only variable input, at a wage rate of $100. The average physical product of labor is 25, the last worker added 10 units to total output, and total fixed cost is $5,000. a. What is marginal cost?
asked by Dede 
Chemistry
Suppose that 50.0 mL of 0.25 M CH3NH2(aq) is titrated with 0.35 M HCl(aq). (a) What is the initial pH of the 0.25 M CH3NH2(aq)? (b) What is the pH after the addition of 15.0 mL of 0.35 M HCl(aq)? (c) What volume of 0.35 M HCl(aq) is required to reach
asked by Dana 
Physics
A 69.5 kg painter is on a uniform 30.0 kg scaffold supported from above by ropes . There is a 5.0 kg pail of paint to one side, as shown. The scaffold is 6 m long. 1.0 m on both ends and 4 m in the middle. From the left end at 1.0 m to the pail is 1.0 m.
asked by Nate 
Fluid Mechanics
A cylindrical tank 2m diameter and 4m long with its axis horizontal, is half filled with water and half filled with oil of density 800kg/m^3. Determine the magnitude and position of the net hydrostatic force on one end of the tank. The answers should be
asked by Claire 
Chemistry
If 1.0L of spilled 1M HCl needed to be neutralized using solid sodium carbonate, how many grams of solid would be required? a)53g b)106g c)1060g d)530g
asked by Kelsey 
physics
A man doing pushups pauses in the position shown in the figure . His mass m = 80 kg. In push up position: From hands to waist = 40 cm From waist to feet = 95 cm height  heel of foot to ground = 30 cm Determine the normal force exerted by the floor on
asked by robin 
Calculus
At a price of $7.5 per ticket, a musical theater group can fill every seat in their 1550 seat performance hall. For every additional dollar charged for admission, the number of tickets sold drops by 55. a) What ticket price maximizes revenue? Round your
asked by Erika 
Math
The function D(h)=7e^0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams will be present after 9 hours. Round three decimal places. so 7e^(0.4 x 9) =
asked by Hannah 
Math please help!
the speed of the current in Puget Sound is 5 mph. A barge travels with the current 26 miles and returns in 10 and 2/3 hours. what is its speed in still water?
asked by haley 
math
The perimeter of the rectangular shaped base of a piano is 16 feet. What are all possible dimensions of the piano, using only whole numbers of feet?
asked by gage 
Chemistry
A commercial for a well known cleaning powder says that it "shakes out white, then turns blue" what type of reaction os occuring? what compound can one use to produce this effect?
asked by Ash 
algebra
Solve the pair of simultaneous equations log(x+y)=0, 2logx=log(y1)
asked by Matteo 
Physics
A 75 kg box slides down a 25 degree ramp with an acceleration of 3.60 meters per second squared. Find the coefficient of kenetic friction between the box and the ramp. What acceleration would a 175 kg box have on this ramp?
asked by Daniel 
chemistry
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the uncertainty in its position is at least a)66 m b)17 m c)6.6 x 108 m d)1.7 x 108 m e)None of the above
asked by lavonne 
physics
two blocks are connected by a string. the smooth incline surface makes an angle of 42 degrees with the horizontal, andthe block on the incline has a mass of 6.7 kg. find the mass of the hanging block that will cause the system to be in equilibrium. (the
asked by stephanie 
Physics
Erica kicks a soccer ball 12 m/s at horizontally from the edge of the roof of a building which is 30.0 m high. a. When does it strike the ground? b. With what velocity does the ball strike the ground?
asked by Nakisa 
Physics Lab I
Let's say you measure an average acceleration to be 0.4134 ms2. What is the height (in centimeters) of the riser block? Assume the legs of the track span 1.0000 m and that there is neither friction nor drag. Also assume the block is under one of the legs.
asked by Richard 
Physics
The coefficient of static friction between hard rubber and normal street pavement is about 0.42. On how steep a hill (maximum angle) can you leave a car parked?
asked by Jon 
PHYSICS HELP
A 320N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 25° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
asked by A 
9th grade
A bowler rolls a 5 kg bowling ball down a magical frictionless bowling alley. The ball accelerates at an average rate of 2 m/s^2. How much force did the bowler apply to the ball?
asked by Nick 
pysics
a .15 kg ball is placed in a shallow wedge with an opening angle of 120 degrees. for each contatct point between the wedge and the ball, determine the force exerted on the ball. assume the system is frictionless.
asked by stephanie 
Physics
An automobile is traveling 65 km/hr. It brakes decelerate it 6.o m/s^2. a) How long will it take to stop the car? b) How far will the car travel after the brakes are applied?
asked by may 
physics
A rifle that shoots bullets at 460 m/s is to be aimed at a target 47.0 m away. If the center of the target is level with the rifle, how high above the target must the rifle barrel be pointed so that the bullet hits dead center? (Neglect air resistance.)
asked by tom 
STATISTICS PLEASE HELP!!!!!
are you a chocolate "purist", or do you like other ingredients in your chocolate? american demographics reports that almost 75% of consumers like traditional ingredients such as nuts or caramel in their chocolate. they are less enthusiastic about the taste
asked by Brittany 
physics
A block (mass = 2.9 kg) is hanging from a massless cord that is wrapped around a pulley (moment of inertia = 1.2 x 103 kg·m2), as the figure shows. Initially the pulley is prevented from rotating and the block is stationary. Then, the pulley is allowed
asked by danica 
physics
ssm A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. The string rotates at an angular speed of 56 rev/s, and its tip has a tangential speed of
asked by Anonymous 
math
mount everset is 29,029 feet above sea level. How many yards above sea level is Mount Everest? Would I divide 29,029 by 3? 9,976 feet above sea level Would this be correct? Thank You.
asked by Jill 
calculus
A fence is to be built to enclose a rectangular area of 210 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the
asked by Anonymous 
geometry
a tree on a 30degree slope grows straight up .what are the measure of the greatest and smallest angles the tree make with the hill? you discovered that if a pair of angle is a linear pair ,the the angles are supplementary. does that mean that all
asked by 000 
World History
Ancient Egypt& Kush study link. thanks
asked by klk 
General
What can you tell about the meaning of astronaut from its Greek roots? 2. What do the latin prefix and root in transmit tell you about the word's meaning?
asked by Tracy 
math grade 11
A quadratic function is defined by f(x)= 3x^2+4x2. A linear function is defined by g(x)= mx5. what values(s) of the slope of the line would make it a tangent to the parabola.
asked by priya 
Chemistry
How is water of hydration related to measurement and how it is related to the law of definite composition?
asked by Ash 
Physics
The "Great Swing" at a country fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end. Each arm supports a seat suspended from a 5.00m long rod, the upper end which is fastened to the arms at a point of 3.00m
asked by Anonymous 
physics
A 155 m long ramp is to be built for a ski jump. If a skier starting from rest at the top is to have a speed no faster than 23 m/s at the bottom, what should be the maximum angle of inclination?
asked by sam 
Physics PLEASE HELP
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on
asked by GENERIC 
Math(Quick question)
The function D(h)=7e^0.4(h) can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams will be present after 9 hours. Round three decimal places. so 7e^(0.4 x 9) =
asked by Hannah 
geometry
A grid has lines at 90degree angles. There are 12 lines in one direction and 9 lines in the other direction. Lines that are parallel are 11 inches apart. What is the least number of 12inch by 12inch floor tiles needed to cover all of the line intersect
asked by Anonymous 
calculus
log2^24  log2^3 = log5^x what is X? thanks
asked by brooks 
Chemistry
In a spontaneous oxidationreduction reaction between aluminum and silver ion, the aluminum(III) ion and solid silver are formed. If 0.001g of aluminum is consumed in this reaction, how much silver is produced? a)1.20g b)1.00g c)3.00g d)530g
asked by Kayy 
accounting
Explain how shaving 5% off the estimated direct labor hours in the base for the predetermined overhead rate usually results in a bog boost in net operating income at the end of the fiscal year.
asked by Anonymous 
biology/poetry
can someone write me a acrostic poem on the word PHOTOSYNTHESIS, thank you
asked by sean 
chemistry
According to the Heisenberg uncertainty principle, if the uncertainty in the speed of an electron is 3.5 x 10(3) m/s, the uncertainty in its position is at least a)66 m b)17 m c)6.6 x 108 m d)1.7 x 108 m e)None of the above
asked by lavonne 
Chemistry
Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq). (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? (b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? (c) What volume of 0.30 M KOH(aq) is required to reach
asked by Alania 
physics
A 125 kg crate rests on the flatbed of a truck that moves at a speed of 15.0 m/s around an unbanked curve whose radius is 66.0m. This crate does not slip relative to the truck. Obtain the magnitude of the static frictional force that the truck bed exerts
asked by Lynda 
Physics
A 4 kg block slides down a frictionless incline making an angle of 60° with the horizontal. (a) What is the total work done on the block when the block slides 2 m (measured along the incline)? (b) What is the speed of the block after it has slid 1.5 m if
asked by Jenni 
organic chemistry
chloroform is an excellent solvent for extraction caffeine from water. Kd = 10 for caffeine in chloroform water at 25 Celsius. what weight of caffeine would be removed from a solution of 4g caffeine in 100ml water by a single extraction of 100 ml of
asked by jayesh 
physics
A force of 10N acts at an angle of 30 to the horizontal.what is the resultant of the force in the vertical direction.
asked by Alkane 
Chemistry
Thank you for being helpful in the past. Could you check my interpretation of the three chemical word problems below,and,let me know if I'm on the right track? 1.Determine the mass of water vapor formed when 1.00g of Butane (C4H10)is burned in a
asked by Cliff 
Chemistry
Microwave radiation is absorbed by the water in food. As the water absorbs the heat it causes the food to get hot. If the λ of a microwave is 10 cm, calculate the frequency of the microwave and the energy of each photon.
asked by Marie 
chemistry
why should samples be weighed rather than measured volumetrically when determining the acetic acidin vinegar
asked by nompumelelo 
chemistry
The fermentation of sugar (C6H12O6) to form ethanol (C2H5OH) and carbon dioxide (CO2) occurs according to the following equation: C6H12O6(aq) ¡ú 2 C2H5OH(aq) + 2 CO2(g) kJ mol¨C1 ¦¤Hf (C6H12O6(s)) is ¨C1275 ¦¤Hf (C2H5OH(l)) is ¨C277 ¦¤Hbond
asked by mailyn 
gatsby ENGLISH HELP PLZZ!!
what role does dan cody play in gatsby's development?? plz help the answer is 1 mark for my quiz but my teacher gave me only 1/2 a mark because i wrote "dan cody was the man who gatsby was with after he left home. gatsby worked for dan cody and that is
asked by Sabrina 
chemistry
A student performing the water of hydration experiment cant seem to get his hydrate to constant weight. Several times he heats the compound, allows it t cool, and weighs it. But each time he does, he obtains a different mass. can you suggest some possible
asked by Ash 
computer
software programs that allow you to legally copy files and give them away at no cost are called which of the following? a) timeshare b) public domain c) shareware d) probeware d
asked by pam 
math
the speed of the current in Puget Sound is 5 mph. A barge travels with the current 26 miles and returns in 10 and 2/3 hours. what is its speed in still water?
asked by haley 
Statistics
Jamaal, a player on a college basketball team, made only 50% of his free throws last season. During the offseason, he worked on developing a softer shot in the hope of improving his freethrow accuracy. This season, Jamaal made 54 of 95 free throws. We
asked by Ashlee 
physics
A speeding motorist traveling 125 km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 11.2 km/h/s (note the mixed units). (a) How much time will it take for the police officer to reach the speeder,
asked by Whitney 
chemistry
Find velocity of electron emitted by metal whose threshold frequency is 2.1*10^14 and when exposed to visible light wavelength of 5.09*10^7
asked by liz 
Physics
0.17 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass
asked by Derek 
Physics
The 2500 kg cable car shown in the figure below descends a 200 m high hill. In addition to its brakes, the cable car controls its speed by pulling an 1200 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the
asked by Laila 
Medical billing and coding
Could someone look over this for me it is a paper in APA to answer 4 questions? Thanks. HEALTH INSURANCE PORTABILITY AND ACCOUNTABILITY ACT HIPAA 1. Health Insurance Portability and Accountability (HIPAA) is an act that was signed by Congress in 1996 to
asked by Theresa 
math
Find each probability for choosing a letter at random from the word MATHEMATICS. P(vowel) 4/11?
asked by Anonymous 
US History
2. The North Atlantic Treaty Organization (NATO) was based on the principle of a. free trade b. collective security c. appeasement d. isolationism B? 4. One sign that the economy might be weakening in the 1920s was a. the failure of many rural banks b.
asked by mysterychicken 
Physics
Two metal spheres, each weighing 24.0 kg are placed 0.0500 m apart. Calculate the magnitude of the gravitational force the two spheres exert on each other.
asked by Andrea 
math
An image on a slide is similar to it's projected image. A slide is 35 mm wide ande 21 mm high. It's projected image is 85 cm wide. To the nearest centimeter, how high is the image?
asked by Anonymous 
algebra
HELP!! It takes 64 inches of ribbon to make a bow and wrap the ribbon around a the box. The box takes 30 inches of ribbon. The width of the box is 12 inches. What is the height of the box?
asked by sammie 
Physics
Initially sliding with a speed of 2.3 m/s , a 1.8 kg block collides with a spring and compresses it 0.36 m before coming to rest. WHat is the force constant of the spring?
asked by Jason 
HIstory
Do you think it was necessary to punish the former confederate states for seceding?
asked by Cierra 
physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on
asked by mathlife 
Pharmacy Tech
An IV infusion order is written for 0.3 L of D5W/0.45% NS to run over 12 hours. The drp factor on th IV is set to 12 gtt/mL. What is the flow rate in drops per minute? Hint make sure your equation includes conversion factors for volume and timeso that the
asked by Frank 
physics
A 1200 kg car is being driven up a 5:0 hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 524 N. A force ~F is applied to the car by the road and propels the car forward. In addition to these two forces, two
asked by deng 
English
Most people think of bamboo as a tree or a bush. Is this transitive or intransitive? think = transitive
asked by Hannah 
Essay help, please. :)
Compare and Contrast Religions Essay How are the three religions: Judaism, Christianity and Islam alike? Judaism, Christianity and Islam share many qualities but also have many differences. Judaism, Christianity and Islam are very similar. For all three
asked by Allyson 
chemistry
What is the molarity of an aqueous solution containing 31.7 g of glucose (C6H12O6) in 1.2 L of solution?
asked by MaryBeth 
physics
A force of 10N acts at an angle of 30 to the horizontal.what is the resultant of the force in the vertical direction.
asked by Alkane 
physics
A 1200 kg car is being driven up a 5:0 hill. The frictional force is directed opposite to the motion of the car and has a magnitude of f = 524 N. A force ~F is applied to the car by the road and propels the car forward. In addition to these two forces, two
asked by Anonymous 
statistics
meg flipped a penny 3 times. what is the probability the results were 3 tails.
asked by Anonymous 
CHEMISTRY intermolecular forces
What intermolecular forces act in the following: H2 PH3 CH3NH2
asked by Jasmin 
physics
A diver springs upward from a board that is three meters above the water. At the instant she contacts the water her speed is 9.00 m/s and her body makes an angle of 71.0° with respect to the horizontal surface of the water. Determine her initial velocity,
asked by tom 
chemistry
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following wavelengths is not predicted by the equation: 1/ = (1.097 x 10(7) m  1) x (1/n1(2)1/n2(2)
asked by lavonne 
Physics
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on
asked by mathlife 
physics PLEASE HELP
Two strong magnets on opposite sides of a small table are shown. The longrange attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on
asked by GENERIC 
chemistry
why should samples be weighed rather than measured volumetrically when determining the percent acetic acid in vineger
asked by Anonymous 
Physics
A 50 kg crate is initially at rest on a plane inclined at an angle of 30 degrees to the horizontal. A man then pulls the crate up the incline via a rope that is parallel to the inclined plane. The tension that the man imparts to the rope is 100 N, and the
asked by Shelby 
physics
A 900 kg car rolling on a horizontal surface has speed v = 55 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?
asked by Anonymous 
7th grade math
Ruth makes a scale drawing of her room.She uses the scale 3/2in:1ft.In the drawing, the dimensions of her room are 18in by 24in.What are the actual dimensions of her room
asked by Daniel 
chemistry
The molar mass of a volatile liquid(one which vaporizes easily) can be determined by a the 'Dumas Method.' In this process a small amount of the liquid (a few drops) is placed in a clean flask. The mouth of the flask is covered with a piece of foil that
asked by Dee 
Math
Marcia developed a roll of film and received 4inch by 6inch prints. She wants to have one picture enlarged to an 8inch by 12inch print. What kind of transformation is this? What is the scale factor?
asked by Caitlin 
chemistry
What is the molarity of NaOCL in a solution of bleach if 10.00mL requires 22.35mL of 0.0291 M Na2S2O4 to reach the endpoint.
asked by Megan 
Cal 1
(1 pt) At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 20 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile
asked by TJ 
comparing fractions
at Morris Elementarhy there are 45 students in each grade, four though six. In the fourth grade, 19 participate in sports after school. Two out of every six fifth grade play sports after schoo;. In the sixthgrade class, seven of every ten students are not
asked by maria 
English
I have to identify the word in () as either adverb or preposition and if it's a preposition I have to list its object. 1.I'm sure he let the dog come (in) last night. 2.The bus drove (past) the people waiting at the bus stop. 1. adverb 2.prepositionpeople
asked by Hayden 
physics
A baseball is hit at ground level. The ball reaches its maximum height above ground level 2.6 s after being hit. Then 2.1 s after reaching its maximum height, the ball barely clears a fence that is 96.4 m from where it was hit. Assume the ground is level.
asked by tom 
Calculus
Suppose f(x) = x ^ 4 – 4x ^ 2 + 6, and g(x) = 3x ^ 3 – 8x. Prove, via the Intermediate Value Theorem, that the functions intersect at least twice between x = –2 and x = 4.
asked by Juana 
Physics
A 1.24 kg block is held against a spring of force constant 1.0 104 N/m, compressing it a distance of 0.29 m. How fast is the block moving after it is released and the spring pushes it away?
asked by Sean 
HIstory
How well did war time reconstruction experiments work in employing freed African Americans?
asked by Cierra 
chemistry
The Rydberg equation, with n1=1, predicts an ultraviolet series of spectral lines of atomic hydrogen. Which of the following wavelengths is not predicted by the equation: 1/ = (1.097 x 10(7) m  1) x (1/n1(2)1/n2(2) a)182 nm b)103 nm c)97 nm d) 95 nm e)
asked by lavonne 
Math
Please help me solve this.. It costs $10 plus $8 per hour to rent a canoe. Brandon and Erin have $50. Solve the following equation to find how many hours they can rent a canoe. 8h +10 = 50
asked by Caitlin 
history
Between 750 B.C. and 550 B.C., what areas did Greeks colonize? In reading my text this is my answer The coasts of Italy, France, Spain, North Africa, and western Asia. Is this correct?
asked by Reed 
Algebra 1
how do i work out the equation S= B + 1/2Pl solving for l
asked by Savannah 
Accounting
Attached is the actual Financial Statements, Cash Flow, and Taxes associated with the assignment questions below. 2007 & 2008 statements below. We are working on a comprehensive/spreadsheet problem (financial statements, cash flow and taxes). A balance
asked by Lisa 
11th grade Math
Two cars travel the same distance. The first car travels at a rate of 37 mph and reaches its destination in t hours. The second car travels at a rate of 54 mph and reaches its destination in 3 hours earlier than the first car. How long does it take for the
asked by Nate 
history
For what reasons did congress oppose the Reconstruction plan to put forward by Andrew Johnson?
asked by ...... 
history
In what ways were Lincoln and Johnson similar?
asked by ...... 
Momentum Problem
A cart of mass m1 = 15 kg slides down a frictionless ramp and is made to collide with a second cart of mass m2 = 23 kg which then heads into a vertical loop of radius 0.21 m. (a) Determine the height h at which cart #1 would need to start from to make sure
asked by Jessica 
physics
A person is riding a bicycle, and its wheels have an angular velocity of +15.5 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is +15.5 revolutions. (a) How much time
asked by james 
math
a rengular prism is made of 1centimeter cubes. the volume of the rectangular prism i 60 cubic centimeters. which set of dimensionscould describe the rectangular prism?
asked by annonymous 
algebra
A metal stays solid at Fahrenheit temperatures below 1796.4 degrees. Determine (in terms of an inequality) those Celsius temperatures for which the metal stays solid. Use the formula F= 9/5 C + 32.
asked by lynn 
Chemistry
a solution has a density of 1.50 g/mL. how many grams are needed to obtain 10.0 mL of solution?
asked by JessiKa 
college Algebra/Linear Algebra
Find a Basis for each of these substances of R^4 (a) All vectors whose components are equal (b) All vectors whose component add to zero (c) All vectors that are perpendicular to (1,1,0,0) and (1,0,11) (d) The column space (In R^2) and nullspace(In R^5) of
asked by traxx 
math
find the sum of the 20th term a=6 and r=2/3
asked by Ali 
Calculus
using the demand function p = 41 − 0.04 q instead of the one given in your book. Round your numeric answers to one decimal place. a) Write the revenue as a function of production, q. R(q) = b) What production level maximizes revenue? q = c) What price
asked by Erika 
Science
According to the following equation: CaCO3 + 2 HCl> CaCl2 + H20 + CO2 How many grams of CO2 can be produced from the reaction of 20.0 mL of 0.400M HCl solution with excess CaCO3?
asked by Makena 
Chemistry
Mg(s) + 2 HCl(aq) > MgCl2(aq) + H2 (g) DeltaH= 4.6x10^2 kJ How much heat is evolved when 0.598 g of Mg are dissolved in excess HCl? I'm not sure how to go about this problem. What I thought to do was: 0.598 g x 1 mol Mg/24.31 g Mg x 2 mol HCl/ 1 mol Mg
asked by Jarrod 
HIstory
State the importance of each of the following: Freedman’s Bureau, Thaddeus Stevens.
asked by Cierra 
Math
The two legs of a right triangle measure 12 inches and 16 inches. How long is the hypotenuse i don't get you
asked by AnonymousGRL3 
Calculus
using the demand function p = 41 − 0.04 q instead of the one given in your book. Round your numeric answers to one decimal place. a) Write the revenue as a function of production, q. R(q) = b) What production level maximizes revenue? q = c) What price
asked by Erika 
Business Management
The Environmental Protection Agency administers environmental standards in the U.S. EPA represents the what, and of what organizations? A.local communities; task environment B.finiancial institutions; internal environment C.government regulators;task
asked by Kimberly 
Honors Geometry
In a proof, I am given that Triangle GCF is congruent to Triangle GKF is congruent to Triangle JHM. Triangle GCF and Triangle GKF are Vertical Angles. I am also given that Angle C(on Triangle GCF) is 4y, and Angle G(on Triangle GKF) is 16y. So, obviously,
asked by Brenna 
Math
My tens digit is double the ones digit,Iam less than 50 and greater than 40...What number am I?
asked by Kiara 
Math: Calculus
Answer the following questions for the function f(x) = \frac{ x^3 }{ x^2  36 } defined on the interval [ 20, 16 ]. A. The function f(x) has vertical asympototes at____ and___ B. f(x) is concave up on the region___ to and____ to___ C. The inflection point
asked by REALLY NEED HELP!!!! 
Calculus
the cost function C(q) = q3−57q2+1083q+1010 for 0 ≤ q ≤ 50 and a price per unit of $534. Round your answers to the nearest whole number. a) What production level maximizes profit? q = b) What is the total cost at this production level? cost = $ c)
asked by Erika 
Foods
1.Describe how you would measure 125ml of hard margarine using water displacement? 2.Why are liquid measures frequently made of heatproof glass such as Pryex? Please answer these questions don't give me any sites. Thanks!
asked by Pratigya 
Chemistry
Microwave radiation is absorbed by the water in food. As the water absorbs the heat it causes the food to get hot. If the λ of a microwave is 10 cm, calculate the frequency of the microwave and the energy of each photon.
asked by Marie 
HIstory
What effect do you think Lincoln’s assassination had no Reconstruction?
asked by ...... 
lanuage arts
Clean your room now! Now is the adverb, is clean the verb it modifies?
asked by Linda 
chemistry
What is the molarity of a bleach solution containing 8.9 g of NaOCl per liter of bleach?
asked by MaryBeth 
social studies
what does the word impact mean on a social studies text book?
asked by kat 
Reading
Please help me! I really need to find a place to read 'My Side Of The Mountain' online. Or at least a chapter review. (ch.12) Thanks.
asked by Anonymous 
physics
A projectile is fired and lands t = 14 s later on the side of a hill, at a location 1400 m away horizontally and 420 m above its starting point. Find the projectile's initial horizontal velocity vx0 and initial vertical velocity vy0. Assume g = 10 m/s2.
asked by Nathaniel 
Intermediate Algebra
The kinetic Energy (K0 of a moving object varies jointly with its mass (m) and the square of its velocity (v). If an object has a mass of 22.5 kilograms and moving with a velocity of 20 meters per second has a kinetic energy of 4500 Joules, find its
asked by Joyce Johnson 
NONFICTION
1. When does the Narrative of Sojourner Truth take place
asked by antioch 
physicS
A block slides down a frictionless plane having an inclination of 14.6°. If the block starts from rest at the top and the length of this incline is 1.90 m, find the acceleration of the block. can someone just help me out with the equation I should be
asked by West 
math
Find each probability for slecting a letter at random form the word ARKANSAS. P(Consonant)
asked by Anonymous 
math
A fence post 3ft tall casts a shadow 16ft long . At the same time ,the barn casts a shadow 96ft long. how tall is the barn?
asked by Dj 
Chemistry
The thallium (present as Tl2SO4) in a 9.468 g pesticide sample was precipitated as thallium(I) iodide. Calculate the mass percent of Tl2SO4 in the sample if 0.1370 g of TlI was recovered.
asked by Misch 
Physics HELP!!! potential energy
Two identical metal plates with small holes are aligned a distance L=6.7 cm apart. They have a potential difference of 131 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters
asked by Molly 
math
You have a set of 36 flash cards numbered from 1 to 36. A card is chosen at random. Find the odds in favor of and the odds againts each selection. Prime number Would it be 1?
asked by Anonymous 
calculus
find the value of the derivative (if it exist) at the indicated extrema. 1. f(x)=x^2/(x^2+4) at (0,0) 2. f(x)=(x+2)^(2/3) at (2,0)
asked by alexus 
computer
what is the cost: performance: reliability: size: installed in numbers: of super computers, main frame, personal computers and PDA'S ?
asked by sheena 
AP Physics
A bucket full of water (15kg) is swung in a vertical circle on a rope 1.5m long. What is the minimum speed it can be swung so that the water doesn't fall out at the top? With what was given, which equations do I need to use to solve for V?
asked by Anonymous 
Spanish
I have a question how to answer the following: 1. Estudias mucho? Would I say Si, me gusta estudio mucho. 2. Andas en patineta en el verano? Would I say Si, me gusta andas en patineta en el verano. I know I'm missing the upside down question mark in front
asked by Joey 
language arts
The wind blew all the clouds away. Away is the adverb, what is/are the words the adverb modifies?
asked by Linda 
physics
A 0.69 kg mass is observed to accelerate at 8.16 m/s2 in a direction 30.5° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?
asked by rob 
Chemistry
In chemistry lab we did an experiment trying to find the empirical formula of an oxide and tin. The question is "suppose some of the oxide splattered out of the crucible. How would this affect your calculated ratio of the number of moles of oxygen to the
asked by Bee 
english
Need ideas for a 7th grade research paper. I like gymnastics and dance. any ideas?
asked by Paige 
physics
1. An object of mass m and initial speed v0 sliding on a horizontal frictionless surface encounters a frictionless ramp. To what vertical height will the object rise before coming to rest?
asked by derek 
Chemistry
You have 20mL of a solution of concentration 0.015mg/mL of x in test tube #1. Prepare serial dilutions of your stock solution, and calculated the concentration of x as follows: Add 10mL of distilled water and 10mL of stock solution from test tube 1 to test
asked by Jon 
PHYSICS
MAXIMUM ELLONGATION IN SPRING WHEN THE MASS WITH SPRING IS THROWN WITH VELOCITY 4M FROM EQUILIBRIUM GIVEN THAT K=50 MASS OF BODY IS 5KG
asked by KOMAL 
geometry
WHAT IS THE BASE LENGTH OF AN ISOSCELES TRIANGLE IF YOU KNOW THE EQUAL SIDES HAVE A VALUE OF 5 AND THE ANGLE BETWEEN THEM IS 45 DEGREES AND THE BASE ANGLES ARE 67.5 DEGREES?
asked by Anonymous 
chemistry
what is the chemical word equation for neutralizing acid spills? Please help me!!
asked by sal 
Bio Lab
You need to prepare medium for your culture cells. Your salt solution is 10x concentration, dilute to 1x for use. You also need to add fetal bovine serum for a final concentration of 10%. What would you add of each for the correct final concentrations in a
asked by Andy 
math
A teach chooses a student at random from a class of 10 boys and 15 girls. Find the odds in favor of and the odds against each event. Choosing a boy
asked by Anonymous 
math
What is 99.6 to the nearest tenth?
asked by Anonymous 
English
They are arguing about rules and regulations again. I have to identify the adverb. again
asked by Jake 
english
What is the simple and complete predicate for this sentence: Slice these vegetables for the salad.
asked by Bell 
science
If you have 0.50M Ca(NO3)2 solution, how many mL of this solution must be evaporated to obtain 32.8 grams of solid Ca(NO3)2?
asked by Makena 
accounting
Jan.1 Beginning Inventory..300 units @ $3.00 Mar.5 Purchase..........… 900 units @ $4.00 Sept.3 Purchase...........… 1,000 units @ $5.00 Nov. 4 Purchase....… 500 units @ $7.00 During 2011, 1,000 units are sold at $10.00 each. Assume that the Periodic
asked by Bill 
math
The carpenter wants to make a dresser based on the dollhouse furniture. The scale is 5\2in : 1ft. The height of the dollhouse is 10in. What is the height of the carpenter's dresser.
asked by Dj 
5th grade
How to divide step by step
asked by Neyse vicente 
language arts
Keep away from the acids in the science room. what is the adverb in the sentence and what are the word or words that each adverb modifies?
asked by Linda 
business math
3 cards are drawn simultaneously at random from a standard deck. Find the probability that all the cards are hearts.
asked by cmb 
CHEMISTRY
1. What is another name for freezing, the opposite of melting? 2. What happens to the boiling point of water when you measure it at high altitudes? 3. What intermolecular forces act in the following: H2PH3 CH3NH2 4. Give an example of an atomic solid?
asked by Riley 
literary
1. Hopkins's use of "seared," "bleared," and "smeared" is an example of
asked by antioch 
Physics
Two identical metal plates with small holes are aligned a distance L=7.2 cm apart. They have a potential difference of 141 Volts. An electron can enter through the hole in the negative plate and exit through the hole in the positive plate. If it enters
asked by lisa 
geometry
The measure of the supplement of an angle is 42 more than twice its complement. Find the original angle (to the nearest tenth if it is not a whole number).
asked by Anonymous 
chemistry
Which of the following is not a oneelectron atom A) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i can't seem to find out about Be2+ and O7+. How to I calculate it?
asked by lavonne 
chemistry
Which of the following is not a oneelectron atom A) H B) He+ C) Li2+ D) Be2+ E) O7+ I know that H, He+, Li2+ and Be3+ are. i can't seem to find out about Be2+ and O7+. How do I calculate it?
asked by lavonne 
day care
samuel is beginning to realize that he has a talent for art and he feel good about it which of erikson 's stages may he have reached
asked by anu 
math
HELP!! the area A of the circle in the figure can be represented by A(r)=pi,r^2 where r is the radius what are the resonable domain and range for each function? explain the problme before this made me make a equation of B(r)=5^2pi,r^2 im not sure if there
asked by paul 
physics
A rock is thrown horizontally from a bridge with a speed of 30.3 m/s. If the rock is 27.2 meters above the river at the moment of release, a)how long the rock is in the air? b)what is the horizontal distance to the point of impact from the point of
asked by Nathaniel 
chemistry
The molar mass of a volatile liquid(one which vaporizes easily) can be determined by a the 'Dumas Method.' In this process a small amount of the liquid (a few drops) is placed in a clean flask. The mouth of the flask is civered with a piece of foil that
asked by Anonymous 
science , physics
A person is riding a bicycle, and its wheels have an angular velocity of +15.5 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is +15.5 revolutions. (a) How much time
asked by Anonymous 
geometry
In triangle ABC, if line BC is one inch longer than line AB, line AC is 10 inches shorter than the sum of line BC and line AB , and the perimeter of triangle ABC is 72 inches, find the length of line BC?
asked by meghan 
history
why do the anti federalist demand the bill of rights?
asked by lily 
chemistry
Can you tell me the geometry(around the carbon/oxygen atom) and whether this is polar or non polar CH3CH3? thx
asked by david 
research
Why is it important to critique nursing research?
asked by maryjane 
PHYSICS
MOMENT OF INIRTIA OF HOLLOW CONE .Q2 MOMENT OF INIRTIA OF SOLID CONE WHOSE DENSITY IS VERING WITH RADIUS .
asked by KOMAL 
modern world studies
I need some help writing an essay. (This homework question was removed due to a copyright claim submitted by K12 Inc.)
asked by susie 
Physics
please help !! A 10 kg sled is pulled horizontally by a force. If the coefficient of static friction is 0.3 , what force is needed to get the sled moving at a constant velocity?
asked by Jessica 
math
The earth has a radius of 6,380 km. The formula for the volume of a sphere is �� V = 4/3 ðx^3, and the formula for surface area of a sphere is A = 4ðx^2 . Find the volume and surface area of the earth and write the answer in scientific
asked by james 
algebra
5x25x=5
asked by Anonymous 
chemistry
i need 2 lewis dot structures for C3H8O. thanks
asked by david 
Physics
Two identical 21.6kg spheres of radius 14 cm are 31.0 cm apart (centertocenter distance). (a) If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact? (b) If the spheres are initially at
asked by Oscar 
chemistry
What is the combined volume when 10 cm3 of acetone are added to 10 cm3 of distilled water?
asked by blannca 
algebra
Add parentheses to 9+8•76•5+4•3+2 so that the value of the expression is 105
asked by Haley 
MEDICAL CODING AND BILLING
THIS IS A QUESTION FROM PENN FOSTERS FINAL EXAM 40976200 NUMBER 4 ON PART B. YOU'RE AN INPATIENT CODER IN A HOSPITAL. YOU'VE JUST CODED A MEDICARE PART A RECORD WITH A DIAGNOSTICRELATED GROUP (DRG) REIMBURSEMENT OF $12000. YOU NOTICE IN THE HOSPITAL'S
asked by JULES 
math
The ratio of measure 60degrees and 120degrees Is this written as a fraction 1/2 or a ratio 60:120 ? Which is more common? The question was what is the ratio of measure of these degrees.
asked by Jill 
Math
A square pane of glass has sides of 15cm. How long is its diagonal?
asked by AnOnYmOuS GiRl 
physics
k so question is one you have all answered previously, 3 different forces acting on a single mass, in north south and east directions. my particular forces are 11.3 N north, 20.4 N east, and 14.7 N south so to figure out the direction of acceleration in
asked by math 
physics
a 20 N force pulls a 5kg box at a 60 degree angle above horizontal along the floor. If the Kinetic friction between contact surfaces is 2N. what is the acceleration of the box?
asked by Meme 
Physics
k so question is one you have all answered previously, 3 different forces acting on a single mass, in north south and east directions. my particular forces are 11.3 N north, 20.4 N east, and 14.7 N south so to figure out the direction of acceleration in
asked by mathlife 
lang. arts
We read a very good Japanese folk tale called "Green Willow." Not sure what the adverb is in this sentence? Is "good" the adverb and "read" the word it modifies?
asked by Linda 
Physics
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth? (Use any variable or symbol stated above along with the following as necessary: G for the
asked by Donny 
math
9+6=___ _ _ 10+__=__ write the sum. show the make a ten fact you used
asked by lexi 
calculus
If y varies inversely as the square of x, and y=0.5 when x=1, find y when x=9
asked by Anonymous 
Math
How do I write the Symmetric Equation of a line given the following parametric equations: (where t is a scalar) x=0t y=0t z=1+1t I know normally I would solve each equation for t and set the equations equal to one another. However, I can not solve for t in
asked by Dwight 
English
What is the importance of feedback in communication?Explain.
asked by Belinda 
Chemistry
What is the chemical symbol for bromine vapour?
asked by Leah 
HIstory
What happened to southern farms and plantations during the Civil War?
asked by Cierra 
Reading
Many people are fascinated by outer space. School children learn about our solar system in school. Tv and radio announcers tell us what to watch for in the night sky. They tell us when the planets are brightest and whcih ones we can see with the naked eye.
asked by Scott 
physicssss
A 0.69 kg mass is observed to accelerate at 8.16 m/s2 in a direction 30.5° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?
asked by rob 
Physics
A bucket full of water (15kg) is swung in a vertical circle on a rope 1.5m long. What is the minimum speed it can be swung so that the water doesn't fall out at the top? Which equations should I start with first?
asked by Thuy 
lang. arts
Your parents will probably give you permission. Is "probably" the adverb and "will" "give" the words it modifies? Not sure if both words or just "give"?
asked by Linda 
math
Find each probability for one roll of a number cube. P(less than 4) would it be 3/6 = 1/3 or no?
asked by Anonymous 
Math
Copy and comple the chart. For each category, write an example, using only the digit given and the digit 1. Examples for the first category have been completed for you. _______________________________________ Category 5 9 2
asked by Sara 
math
multipling to get 210 ways to multiply with two numbers i need five i have four i have 21*10,15*14,,7*30,35*6
asked by arjel 
physics
a 20 N force pulls a 5kg box at a 60 degree angle above horizontal along the floor. If the Kinetic friction between contact surfaces is 2N. what is the acceleration of the box?
asked by Meme 
chemistry
i need 2 lewis dot structures for C3H8O. thanks
asked by david 
math
A type of bacteria reproduces by splitting in two every thirty minutes. How many bacteria will there be after 4 hours if there are 2 bacteria to begin with?
asked by Kam 
world history
why does the french people attacked the Bastille?
asked by 000 
math
The names, or notes, of all the white keys on a piano are written on pieces of paper and placed in a cup. There are 7 sets of the notes d, e, f, and g and 8 sets of the notes a, b, and c. If a person draws one note out of the cup without looking , what are
asked by gage 
Algebra
Manuel has a boat that can move at a speed of 30 kn/h in still water. He rides 280 km downstream in a river in the same time it takes to ride 70 km upstream. What is the speed of the river?
asked by Dusty 
trig
A bicyclist is riding at 15 mph and her bike has wheels with a radius of 14 inches. She rides over a wad of gum which sticks in the tire. Assume this is t=0 seconds. a.)Find a function that gives the height in inches above the ground of the gum, with the
asked by matt 
Math
Express 3/11 as a decimal number. do u go 3 divide by 11 or 11 divide by 3 ?? so it would be 0.27 repeated or 3.6 repeated ??
asked by Caitlin 
math
A pumpkin 14" dia. x 42" cir. x 11" tall how much does it weigh?
asked by roscoe 
business math
If the odds for A are 4 to 2, what is the probability of A?
asked by cmb 
trig
sec(sq) X  Sec(sq) X * Sin (sq) X = 1
asked by John 
math
Suppose you choose a letter at random form the word ARITHMETIC. What are the oods in favor of selecting a vowel. What are the odds against selecting a vowel? 2/5 abd 3/5?
asked by Anonymous 
Math Calculus
A firm finds that it can sell all the radios it manufactures st a price of $75 each. If x radios are manufactured each day and C(x)=x^2 +25x +100 is the daily total cost of production, how many radios should be produced each day for the firm to maximize
asked by Dee 
Chemistry
I really need help with this; it'll be the last chemistry question I ask: 44. Identify the type of reaction. a. AB > A+B b. AB + C> AC + B c. AB + CD > AD + CB Thanks MC
asked by mysterychicken 
Stats
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean outofpocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11. (a) At the 5 percent level of
asked by Sami 
Math: Calculus
Answer the following questions for the function f(x)=sin(x/4)^2 defined on the interval [12.266371, 2.241593]. Rememer that you can enter pi for as part of your answer. a.)f(x) is concave down on the interval ____. b.) A global minimum for this function
asked by NEED HELP!!!! 
5th grade
what is the first legislative body in america giving the settlers the opportunity to control thier own then it has a blank.
asked by Teara 
calculus
Lim= xInfinite x+0/(x2+1)=? please show work
asked by tim 
English
I forgot to include the following sentences. I hope youcan have a look at them, too. 1) The fifth part continues the process of soul’s revival. The ship begins to move and celestial spirits stand by the corpses of the dead men. 2)In the sixth part the
asked by Franco 
math
I have a sq root problem here goes ^5x=5
asked by cat 
lang. arts
We are "so" happy for you. Happy is the adverb, is "happy" the verb it modifies?
asked by Linda 
physics
A 0.69 kg mass is observed to accelerate at 8.16 m/s2 in a direction 30.5° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?
asked by rob 
computer
name the four major types of components that makeup a computer. C__ P__ UNIT (CPU) R___ or M __ memory (RAM) Auxiliary S____ ____ put Units ____ put Units
asked by pam 
Math(Please check)
The following function is onetoone; find its inverse f(x)=x^3+5 I know that the first step would be to set y = to x so I did y=x^3+5 Then you swap x with y so x=y^3+5. Then you solve for y and this is where I think i messed up. I did y^3=x5 = y=x^35
asked by Hannah 
Integrated math
A meteorologist tracked the increase and decrease of rain totals in inches from the previous year. This is the data for the following 4 months: January 1.34, February +2.68, March + 1.79, April 0.87. Estimate the change from the previous year by adding
asked by Andrew 
art history
Im writing a paper on Van Gogh's cypress tree painting. I have a lot of information but is still not long enough. I was wondering if anybody knows any information that I can include. I have read that cypress trees are associated with fire, mist and seahow
asked by Anonymous 
physics
A rock is thrown horizontally with a speed of 5.9 m/s from a height of 63.5 meters from the ground below. With what vertical speed does the rock hit the ground?
asked by Anonymous 
math
A building 35ft tall casts a shadow 105ft long .Patty casts a shadow 16.5 ft long. how tall is Patty?
asked by Dj 
Math
Find the x and y intercepts of the following function. f(x) = 9x  x^3
asked by Hannah 
math
I am submitting agian, I am not sure the answer someone gave sounds correct. We are learning about exponents. A type of bacteria reproduces by splitting in two every thirty minutes. How many bacteria will there be after 4 hours if there are 2 bacteria to
asked by Kam 
physics
a physics book is thrown horizontal at a velocity of 10.0m/s from the top of a cliff 78.4 m high. a). how long does the stone take to reach the bottom of the cliff? b.) how far from the base of the base of the cliff does the stone stike the ground?
asked by romy 
Math
Light travels at a speed of about 186,000 miles per second. Sound travels at a speed of about 1,087 feet per second. How many times faster light travels than sound.
asked by Rose 
Math/Physics
A bungee jumper bounces up and down at thhe end of a bungee cord with a fairly consstant amplitude of 10m and a period of 5 s. At her lowest point, the jumper is 5m above the ground. Is this Periodic or non periodic? What is the reason? Draw the graph.
asked by Mansy 
social studies
How might the growth of multinational corporations affect the government's role in the economy?
asked by tony 
grammar
I'm trying to figure out how this sentence should be correctly punctuated. He soon found out that it was just what it was called, a dream. Specifically, I'm questioning the comma after called.
asked by Jack 
Physics  Sound Energy (check + help)
Sound, a form of energy can be modeled by using two distinctly different approaches. a) Describe the propagation of sound energy through air by discussing the motion of individual particles. Include possible mathematical equations that might apply. Ans:
asked by Farah 
Physcis  Wavefront and wavelets
Describe how the wavelets that form in the wavefront apparently vanish behind it?
asked by Farah 
HIstory
How did conditions differ for African Americans before and after the civil war?
asked by Cierra 
chemistry
a balloon has the volume of 90 L at a pressure of 45 kPa. What will the volume be if the pressure increases 135 kPa.
asked by ? 
physics
A soccer player kicks the ball toward a goal that is 28.6 m in front of him. The ball leaves his foot at a speed of 18.5 m/s and an angle of 30.6° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The
asked by tom 
English
Are the words "awake" and "discovered" compound words?
asked by Amadeus 
physics
A 0.69 kg mass is observed to accelerate at 8.16 m/s2 in a direction 30.5° north of east. There is a force directed north acting on the object and a force directed east acting on the object. What is the magnitude of the force acting east on the object?
asked by rob 
5th grade
If a phone team asks each person to call two people, how many rounds will it take to call 64 people?
asked by Kam 
math
what is the formula for finding % of a #? example: 1. find 40 % of 160? 2. 24 is 100 % of what? also, how do you do this problem? 4/6 of 48
asked by abbie 
math
suppose you choose a letter at random from the word ARITHMETIC. What are the odds in favor of selecting a vowel? What are the odds against selecting a vowel?
asked by Anonymous 
math
A circular sector of central angle theta and 9 cm radius can be fashioned into a paper cone with volume 100 cm^3. Find all possible values of theta.
asked by caroline 
Math urgent
Find a degree 6 polynomial with  8 as a root, no other roots, and in which the coefficient of x^6 is 16. Assume that all (nonconstant) factors of the polynomial correspond to real zeroes.
asked by Eileen 
Chemistry
Thank you for being helpful in the check my interpretation of the three word problems below,and,let me know if I'm on the right track? Determine the mass of water vapor formed when 1.00g of Butane (C4H10)
asked by Cliff 
3rd grader math homework
please help with the below question writing in math Bethany has 40 apples. Write a subtraction story about the apples that would require regrouping. Then write the answer in a complete sentence. Thanks!
asked by choconcung 
criminal law
the american Society of Criminology or the Academy of Criminal Justice? Why?
asked by meeee 
physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?
asked by derek 
8th grade
what is the area of a regular hexagon ABCDEF if AB= 2 units? express your answer in simplist form.
asked by hexagon help 
Math
y = x − 4 + 8 Find the xcoordinate of the vertex of the graph. And the ycoordinate of the vertex of the graph. Please help me, I'm stuck!
asked by HELP 
5th grade
In a photograph, the length of a sailing ship is 12in., and the height of its mast is 5in. The actual ship is 30 m long. What is the actual height of the ship's mast?
asked by Sara 
English
Crucible (Again). The sites did not help. I had done a search already. Thanks anyway for the suggestion. Would you be able to give me input on the below Intro, and also help me next with a topic sentence. "The pure in heart need no lawyers(Crucible, Arthur
asked by M 
Chemistry
Compare & Explain the differences between a leadacid battery and a drycell battery?
asked by sarah 
algebra
A metal stays solid at Fahrenheit temperatures below 1691.7 degrees. Determine (in terms of an inequality) those Celsius temperatures for which the metal stays solid. Use the formula F= 9/5 C + 32.
asked by lee 
math
It the perimeter of a square is 40in How many square tiles with 1in sides is needed to cover its area? The area would be 100. so would you need 100 tiles?
asked by Jill 
Science
how do i solve for n2? 1/ λ= 1.097x10^7m^1 (1/(3)^2 1/(n2)^2)
asked by Sam 
To Theresa
In your post asking for someone to critique your writing, you included far too much personal information. It's just not safe to do that online, so I have deleted it. Please repost, but put fake information in place of your name, address, etc. Thanks.
asked by Writeacher 
chem helpp!
Consider a system of three molecules A, B, and C. Suppose that three units of energy can be distributed over the three atoms. Each atom can have no energy, one unit of energy, two units of energy, or all three units of energy. Assume that each of the ten
asked by John 
algebra
Solve: 13(4+2a)=208
asked by Koa 
math
A number is divisible by another number when the ________ after division by tat number is 0.
asked by Ron 
lang. arts
The play Purlie Victorious was "too" funny for words. "too" is the adverb, is "funny" the verb it modifies?
asked by Linda 
physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?
asked by derek 
homework
Maribel's city imposes a tax that is 40% of the state tax she pays. Her taxable income is $198.50 per week. Her state imposes tax at a rate of 5%. How much state and local tax is withheld from her weekly pay?
asked by Anonymous 
Math
I am a triangle that has been translated to rest on (1, 1),(1,3), and (2,1). Before translation I was on (2,1) and (2,5). Where is my third vertex before I was translated?
asked by James Cayson 
chemistry
If you need 600 mL of a .5 M NaOH solution and 3 M NaOH is provided, how much of the 3 M NaOH will you need?
asked by Brandon 
math
What is the formula for finding 54 is 10 % of what?
asked by abbie 
western civilization
The debt burden of french crown reached crisis proportions as a result of expenses related to french involvement?
asked by john jr 
physics
k so question is one you have all answered previously, 3 different forces acting on a single mass, in north south and east directions. my particular forces are 11.3 N north, 20.4 N east, and 14.7 N south so to figure out the direction of acceleration in
asked by mathlife 
human resources
◦Identify the components of a welldefined performance management system. ◦How do they tie together to support organizational performance? Explain. ◦Which are most appropriate for LansingSmith? Why? ◦How will the new program be communicated to
asked by Holly 
Physicsdiffraction
Suppose you have measured the diffraction pattern of a grating with d = 0.09 mm and have found that the spots were separated by s = 1 cm. Now you want to determine d for an unknown grating. With the unknown grating, the spots are separated by s = 3.1 cm.
asked by bre 
English
Can you check if he following sentences are possible, please? Thank you very much in advance. 1.In the first part the ancient Mariner stops a wedding guest to tell him his dreadful tale. The killing of the albatross is significant in two ways. 2) Firstly,
asked by Franco 
Health Care
Do you think that there is a difference if an EMR system is put into a small facility or a big facility?
asked by Lori 
math
if there is a height of 4 meters and sides of 5 meters and 7 meters"what is the area of the square meters
asked by samantha 
Math
how do I multiply 3.0 by .25?
asked by Bailey 
5th grade
a parallegram has a height of 4 meters and sides of 5 meters and 7 meters. What is its area in square meters?
asked by samantha 
Physcis  scientifc models and theories.
a) Do you believe that some current accepted scientific models or theories might be held in high regard because of the structure of the scientists who proposed them? b) Suggest on possible model or theory that is currently accepted by a majority of people
asked by Farah 
art/101
· Write a 200 to 300word summary of the following questions: o How are the arts in your community supported by various agencies and citizens? o Do you think there is enough or not enough support of the arts by these entities? Explain why or why not. o
asked by stephaine 
science
should we use geothermal energy ?
asked by hailey 
English
In the crucible the pure in heart need no lawyers, agree or disagree, give me some input please!
asked by M 
CHEMISTRY
Consider a system of three molecules A, B, and C. Suppose that three units of energy can be distributed over the three atoms. Each atom can have no energy, one unit of energy, two units of energy, or all three units of energy. Assume that each of the ten
asked by John 
English
Thank you for your corrections. Can you please check the grammar in the following letter, please? 1) Do you think you can help me find a school in your area which could be interested in an email correspondence with our school? It is a high school with an
asked by Franco 
Language arts
I have almost finished my report on the writer Joy Harjo. "almost" is the adverb. Is "have" "finished" the words the adverb modifies?
asked by Linda 
language arts
Promises should "always" be kept. "always" is the adverb. What are the word or words the adverb modifies?
asked by Linda 
English
Is there a difference between a root word and a base word, or are they the same thing?
asked by Jenny 
lang. arts
We should not have taken the canary outside. "Not" is the adverb. Is "should have taken" the words the adverb modifies and are the words verbs?
asked by Linda 
American Government
if the U.S. were to have another constitutional convention, would we keep a federal system or change? why or why not
asked by Anonymous 
Physics
If a 1kg mass fell toward Earth from a large distance where it had zero relative velocity, what would be the velocity at the Earth's surface?
asked by Jennifer 
math check
Brenda Luai earns $14,260 per year. She is paid 24 times per year and claims 1 exemption. If $19.63 in taxes is withheld from each paycheck, at what rate is she taxed?
asked by Anonymous 
graham school
how,arrays and an expanded algorithm it is a 4th grade homework
asked by wendy 
science
What do you call a substance that is not a liquid but you can change it's form into whatever you want? Is it a solid? Thanks, Bell
asked by Bell 
math
Use the definition of less than and greater than to verify that a. 9 < 6. b. 2 > 8. c. 0 > 2.
asked by Amanda 
algebra 1
can someone help me solve this equation 5x  12 < 20
asked by jazz 
Math
Simplify: x4 −4x3 −27x+108  x3 −3x2 −16x+48 PLEASE!
asked by Clueless 
***chemistry
Why is vinegar recommended for cleaning coffee pots, steam irons, and kitchen and bathroom faucets with white deposits on them? Why does it work, and what is the chemical equation for how it works?
asked by samantha 
Math
Solve each quadratic equation by completing the square. x^26x+2=0
asked by kevin Chen 
Chem
Consider a system of three molecules A, B, and C. Suppose that three units of energy can be distributed over the three atoms. Each atom can have no energy, one unit of energy, two units of energy, or all three units of energy. Assume that each of the ten
asked by John 
probability
what is the probability of drawing a queen and the 5 of clubs in any order? with replacment
asked by jj reddick 
Physicspotential energy
In a classic model, the electron of a hydrogen atom circles the proton at a radius of 0.0529·10−9m when it is in the n=1 state. What is its electric potential energy?
asked by Kristy 
Physics
A fixed 0.15 kg soliddisk pulley with a radius of 0.065 m is acted on by a net torque of 5.2 m·N. What is the angular acceleration of the pulley?
asked by Katherine 
***chemistry
The Morton Salt Compant instroduced a logo and slogan for advertising its salt in 1911. This is one of the oldest and most successful ad campaigns ever, but what does it mean and where and why did they come up with it? (describe the chemical basis for it)
asked by samantha 
math
In a photograph, the length of a sailing ship is 12 in., and the height of its mast is 5 in. The actual ship is 30m long. What is the actual height of the ship's mast?
asked by Sara 
Organic Chemistry
What would have happened if we had forgotten to neutralize the aqueous solution before recrystallization?
asked by Andy 
physicsacoustics
1.A wall between two rooms is 20 x 9 ft. The wall construction has Transmission Loss 50 dB at 1000 Hz. In the wall is a small window of size 4 x 2 ft. The window has a tested Transmission Loss of 20 dB at the same frequency. The receiving room has 200 ft^2
asked by sandhu 
Marketing 421
HewlettPackard sells personal computers through specialty computer stores, electronics superstores, and its own Internet site. The marketing mix variable that is being considered here is:
asked by Ayesha 
enviroment
i have this quetion and answer thing and i am having troubles with the meanings can anyone help me?
asked by abby 
college
Trig help... equation on the interval [0,2pi]? 2sin^2(x)=sin(x)
asked by Sam 
math Trig
find each ratio to 3 decimal places cot245degrees sec74degrees how do i do this?
asked by Abby 
9th grade
what might be the efect of the following a)the covering tissue of the cappilaries is much thicker b)air sack tissue is much thicker
asked by riley 
ethics
Can you think of something that is legal but unethical or something that is ethical but illegal? Describe what sort of moral and ethical values are in conflict: personal, societal or organizational? which one is it i think it could be personal and social
asked by bobbi 
Math
Cars P and Q started simultaneously from opposite ends of a straight 300mile expressway and traveled toward each other, without stopping, until they passed atlocation X . To the nearest mile, how many miles of the expressway had car P traveled when the
asked by Dhiraj 
english
The first English novel was Gulliver's Travels... true..?
asked by danny 
FP101
Which part of the comprehensive financial plan do rent and food fall under? What about life insurance, longterm care insurance, and estate planning; which section of the comprehensive plan do these fall under?
asked by genevieve 
social studies
How did written language help in the making of civilizations?
asked by Laura 
math
what is the pattern 17  62  92
asked by jennifer 
English
I have to add prepositional phrases to the following sentences. Please check to see if correct. 1.The carpenter repaired the roof. 2.The coach explained the play. 1.The carpenter repaired the roof in the house. 2.The coach down the street explained the
asked by Chris 
language arts
She wrote it "very" carefully. "Very" is the adverb; is "carefully" the adverb it modifies?
asked by Linda 
*chemistry
What is the source of Dr. Seuss' Green Eggs and Ham? (Why do hard boiled eggs sometimes have green coated or tinged egg yolks?)
asked by samantha 
medical
plz give me information about medical equipments and medicenes used in medical inspection room(MI room) in universities....plz
asked by daan 
calculus
What is the formula for figuring out the Tangent of a "S" Curve?? R=3000?
asked by Samantha 
lang. arts
"Very" sadly, we returned home. Very is the adverb, is "sadly" the adverb it modifies?
asked by Linda 
math  geometry
graph the quadrilateral separately nd algebraically and show if it's a square quad abcd:a(0,a) b(a,2a) c(2a,a) d(a,0)
asked by sara 
lang. arts
We will soon be going to computer class. Is "soon" the adverb and "going" the word it modifies? Thank you.
asked by Linda 
chemistry extra credit
If you eat something very hot or spicy, and need to quickly "douse the burning sensation" in your mouth, water does not work as well as other possibilities. What is best for producing relief and why?
asked by samantha 
finanace
why is it important to go through these steps when you are planning on making a large purchase
asked by shelia 
eng
I have to write a full sentence outline and can not figure out how to do it
asked by Sharon 
Math Grade 11
Solve for d in this triangle \ 1  \ M \ I  \ d L  \ E ___ \  90 x\  x Is 60 Degrees The 90 Box is a right angle. THank you!
asked by Nate 
math
trying to solve linear equations problem is: xy2z=4; x+2y+z=1, x+y3z=11. please help me.
asked by Tammy 
social studies
What are differences between the roles that individuals and government play in economy?
asked by tony 
science
i need 9 sentences about tundra biomes
asked by DESTINY 
science
name two ways mountains can effect the climate of an area
asked by cole 
Derviative
Differentiate. V(x) = (3 x^3 + 3)(x^4  3 x)
asked by Michael 
algebra
If there was a problem like this: 2yx for y=8 and x=5, you would write it like this: 2(8)(5). Which do you multiply first? 8x5 then x2 or 2x8 then x5?
asked by Abby 
Physics
In a very simple model of the lower atmosphere, air has a constant density of 1.25 kg/m3. How much would the air pressure change over a height difference of 260 m?
asked by Emma 
6th grade
how does geothermal energy work ?
asked by hailey 
algebra
16/2t=2
asked by Whitney 
Physics HELP!!!
In a very simple model of the lower atmosphere, air has a constant density of 1.25 kg/m3. How much would the air pressure change over a height difference of 260 m?
asked by Kristen 
EDU
What benefits can be found from collaboration and how do students benefit from this practice? Explain.
asked by Anonymous 
math
multipling to get 210 with more than two numbers
asked by arjel 
1st grade
what are the rules or attributes for shapes
asked by joan 
physics
Will the work done by friction on an object that moves through a positive displacement be positive of negative??? negative
asked by derek 
western civilization
What changes was the agricultural revoloution of the 1700's built on?
asked by john jr 
computer
Name the BARS
asked by pam 
physics
what is a situation where friction is necessary for motion to occur?
asked by egv 
math
35 inches = ? ft
asked by lily 
Math
the area of a square is 14 square centimeters. what is the length of a side of the square
asked by kevin Chen 
Math
Input 5 output 16; how does this work
asked by Dorian 
chemistry
why does zinc decompose when reacted with copper sulphate?
asked by Mary 
chemistry
what is the observation when lead nitrate is reacted with magnisium?
asked by Mary 
social studies
Why do you think the french villagers of vincennes kept swithing loyalties between the british and the colonists? I think that it is because they wanted to be on the side that was in control. Is there a better answer?
asked by Jill 
History
how could i show evidence that the War on the Homefront supported the soldiers by selling victory bonds and had a positive effect on economic stability?
asked by Rebecca 
lever
What is the definition of a lever
asked by Nick 
Science
What do engineers do?
asked by David 
HIstory
Why did congress feel that construction was a confessional task and not a presidential task?
asked by help 
college
be used to conceptually understand multiculturalism?
asked by me 
English
I have to list the verb or verbs. Could someone please check. 1. The plant Venus seems more like Earth in appearance than any other planet does. seems like
asked by Anonymous 
medical
plz give me information about medical equipments and medicenes used in medical inspection room(MI room) in universities....plz
asked by daan 
Physics, Propagation error
Does anyone know how to find the propogation error for this equation? K_i = 1⁄2 m_b v_i^2 = ½ (.069g)(6.49m/s)² = 1.45(kgm²)/s² Thank you so much!
asked by Jessica 
physics
why are there no units for mu?
asked by egv 
math
wat is a isosceles rigth triangle?????
asked by AnOnYmOuS GiRl 
history
what were some aspects of the ten percent plan?
asked by help!!! 
linear equations math
Find the equation of a line through the points (2,3)and (4,5)
asked by Brittany 
science
explain why people have the wrong ideas are incorrect atoms why they might have these misconceptions
asked by yuku 
math
how long does the equation od pi go on?
asked by RE 
math
3a+8=15(9a9)
asked by Allie 
EDU310
why are educators considered to be such a close and collaborative group of professionals.
asked by Anonymous 
5th grade
what shape can fold into 50 deferent ways and still be equal on both sides?
asked by Dustin 
math
what is 12 1 and 8/11
asked by john 
6th grade
What does 22x11= Thanks for your help!
asked by Bethany 
Science
Should we use biomass?
asked by Abby