Questions Asked on
November 14, 2011

calculus
a boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 3:00 pm. at what time were the two boats closest together
asked by LALA 
physics
A rocket is fired in deep space, where gravity is negligible. In the first second it ejects 1/160 of its mass as exhaust gas and has an acceleration of 15.1 m/s^2.What is the speed v_gas of the exhaust gas relative to the rocket?
asked by paul 
Physics
A student initially at rest on a frictionless frozen pond throws a 1 kg hammer in one direction. After the throw the hammer moves off in one direction while the student moves off in the other direction. Which of the following correctly describes the above
asked by Mae 
Chem
Seawater contains approximately 3.5% by mass and has a density of 1.02 g/mL. What volume of seawater contains 5.5g of sodium
asked by Haley 
Chemistry
The Lewis dot diagram for iodite (IO2) is given below. Using your VSEPR information, determine the most likely molecular geometry (shape) for iodite.
asked by Anonymous 
Calculus
A stone is dropped from the edge of a roof, and hits the ground with a velocity of 195 feet per second. How high is the roof? .
asked by Anonymous 
Math
The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one four times as strong as the other, are placed 11 ft
asked by Samantha 
Chemistry
If a nitrogen gas sample occupies a volume of 2.55 L at 22.0 degrees Celsius and 0.860 atm, what is the mass of the N2 gas?
asked by Mallory 
Math
A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 24 ft, find the value of x so that the greatest possible amount of
asked by Ashleigh 
Chemistry
How many grams of C4H10O can be melted by 2.0 x 103 J? Given ÄHfus = 7.27 kJ/mol
asked by Frank 
physics
A daredevil jumps a canyon 12 m wide . To do so , he drives a car up a 19 degree incline. a) What is the minimum speed must he achieve to clear the canyon ? b) If the daredevil jumps at this minimum speed, what will his speed be when he reaches the other
asked by lala mon 
Spanish1 help
Fill in the blank with the correct conjugation of the verb in parentheses. ¿(Trabajar) __________ tú por la tarde? When entering your answers for fill in the blank and essay questions, please be sure to use accent marks and/or correct punctuation to
asked by Darius 
Chemistry
Use the equations with the enthalpy information given below to calculate the ÄH° for the reaction: S(s) + O2(g) > SO2(g) S(s) + 3/2 O2(g) > SO3(g) ÄH° = 395kJ 2 SO2(g) + O2(g) > 2 SO3(g) ÄH° = 198.2 kJ
asked by Anonymous 
chemistry
(a) A person drinks four glasses of cold water (3.0°C) every day. The volume of each glass is 2.5x10^2 mL. How much heat (in kJ) does the body have to supply to raise the temperature of the water to 37°C, the body temperature? (b) How much heat would
asked by Amber 
Chemistry
Which of the two is the stronger base?Give your reason. (a) HPO4 2 or PO4 3 (b)HS or S2
asked by Dewa 
chemistry
A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac
asked by Mike 
chemistry
Which of the following quantum numbers describes the shape of an orbital? A) principle quantum number (n) B) magnetic quantum number (ml) C) spin quantum number (ms) D) Schrodinger quantum number (S) E) (azithmal) angular momentum quantum number (l)
asked by Teresa 
Math
Without using calculator,evaluate Sin15 deg,Cos 15 deg,Sin 75deg. O need the answer urgently pls.
asked by Prince 
physics
a force of 20 n is applied to a 10 kg mass on a level frictionless surface what is the acceleration of the mass?
asked by irene 
Reading
What is the rhyme scheme of "Great Glorious Gobs"? A. ABAB B. BBBA C. AABB D. AABA
asked by Bob 
physics emegency!
A 16 kg object with a velocity 7.5 m/s explodes into two equal fragments. One flies off with a velocity 2.5i 2.5j m/s. What is the velocity of the other fragment in vector notation?
asked by joe 
Physics
Please try to be clear in your explanation!! A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 5.00 m/s, and her takeoff point is 1.50 m above the pool. (a) How long are her feet in the air?
asked by Lindsey 
GeometryPlease Help
A man has a garden 10 meters square to fence. How many fence posts are needed if each post is 1 meter from the adjacent posts?
asked by christy 
Chemistry
For the following reaction: Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4 How many moles of Na2SO4 can be made with 3.2 moles of NaOH and excess Al2(SO4)3?
asked by Carrie 
chemistry
A sample of neon gas at 1.20 atm compresses from 0.250 L to 0.125 L. If the temperature remains constant, what is the final pressure?
asked by Mallory 
Chemistry
What is the trend in atomic size in the series of Group IIA elements Be through Ra?
asked by Tom 
Chemistry
If solution A had a pH of 8, and solution B had 1,000 times this hydrogen ion concentration what would be the pH of solution B, and would solution B be acidic or basic?
asked by Kristin 
Advanced Functions
The earth rotates on its axis once every 24 hours. How long does it take Earth to rotate through an angle of 4(pi)/3?
asked by Rebecca 
Physics
A ball moving at +3.0 m/s along a table rolls off a table and lands on the ground 2.0 m away. How high was the table?
asked by Cali 
Reading
Which line in the poem contains an example of onomatopoeia? A. Line 6 B. Line 7 C. Line 14 D. Line 15 Line 6: and you'll forget all about that broccoli you chop Line 7: Rock candy looks like beautiful glass Line 14: but spinach tastes all gritty and sandy
asked by Bob 
READING
Which line in the poem contains an example of onomatopoeia? A. Line 6 B. Line 7 C. Line 14 D. Line 15 Line 6: and you'll forget all about that broccoli you chop Line 7: Rock candy looks like beautiful glass Line 14: but spinach tastes all gritty and sandy
asked by Bob 
Chem
Rank thefollowing elements in order of decreasing atomic radius. N, B, Be, Li? I thought it was N, B, Be, Li
asked by Anna 
Accounting
A process began the month with 3,000 units in the beginning work in process inventory and ended the month with 2,000 units in the ending work in process. If 12,000 units were completed and transferred out of the process during the month, how many units
asked by MAVIS 
math
A roll of fabric was 132 inches long. A customer bought 3 feet of the fabric. How many feet of fabric were remaining?
asked by Sanaya 
chemistry
3.5g of CuCl2.2H2O were dissolved and reacted with excess Na2SO3 in the presence of HCl. After filtration, 1.5g of CuCl crystals was obtained. Calculate the %yield.
asked by Shannon 
Trig
The path of a projectile fired at an inclination t0 to the horizontal with initial velocity v feet per second is a parabola. The horizontal distance R, in feet, that the projectile travels is given by R = v2sin(2t)/32.2. What is R if v = 152 and t = 74?
asked by Jared Smith 
math
Tyler buys a stereo system for $1200, and pays for it using a credit card. This particular card charges 1.5 percent monthly interest on the unpaid balance, and requires a minimum payment of $20 each month. Suppose that Tyler pays only the minimum amount
asked by Danielle 
calculus
The force F (in Newtons) required to move a box of mass m kg in motion by pulling on an attached rope is F(x) = f m g/(cos(x))+ f (sin(x)) where x is the angle between the rope and the horizontal, f is the coefficient of static friction and g = 9.8 m/s^2.
asked by nate 
chemistry
If water is saturated with CaCO3, how much of it has to evaporate to deposit .250g of CaCO3. Ksp CaCO3 = 4.96 x 10^7
asked by Sarah 
physics
A 4.90 kg particle moves along the x axis. Its position varies with time according to x = t + 3.4t3, where x is in meters and t is in seconds. (a) Find the kinetic energy at any time t. (Accurately round any coefficient to exactly two decimal places. Use t
asked by carlton 
Physic
An electric motor rotating a workshop grinding wheel at a rate of 114 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.10 rad/s2. (a) How long does it take for the grinding wheel to stop?
asked by Anthony 
Geometry
A 4inchthick concrete slab is being poured for a circular patio 10 feet in diameter. Concrete costs $50 per cubic yard. Find the cost of the concerte, to the nearest cent. Show how you come to your answer.
asked by christy 
physics
A 34.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 22.00 m. When she is partway down the slide, at a height h2 of 11.00 m, she is moving at a speed of 8.40 m/s. Calculate the mechanical energy lost due to
asked by Anonymous 
Physics help please!
The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an axis through the center? (Diagram shows equilateral triangle with 500g
asked by Me 
Chemistry
What is the molecular geometry (shape) if you have 3 single bonds and 1 lone pair around the central atom?
asked by Angela 
grammar
Talking is not allowed in class. Talking is what part of speech?
asked by Kathy 
Finance
Assume WhirledCom has an issue of 15 year $1000 par value bonds that pay 6% interest, semiannually Futher asssume that today's required rate of return on htese bonds is 9% How much would these bonds be worth today? Round off to the nearest $1
asked by Debbie 
math
for the polynomial shown below, find f(1). f(x)=3x^4x^3+4x2
asked by Anna 
geometry
Given: In triangle ABC,
asked by alisa 
physics
A soccer player kicks a ball into the air at an angle of 34 degrees above the horizontal . The initial velocity of the ball is 25 m/s How long is the soccer ball in the air ?
asked by lala mon 
algebra
if mary takes 3 hours to mow a lawn and sally takes 5 hours how long will it take them to mow it together
asked by bill 
Physics
A coordinate system (in meters) is constructed on the surface of a pool table, and three objects are placed on the table as follows: a 4.0 kg object at the origin of the coordinate system, a 5.0 kg object at (0, 2.0), and a 9.0 kg object at (4.0, 0). Find
asked by Anonymous 
Chemistry
For the following reaction: 6ClO2 (g) + 3H2O (l) = 5HClO3 (l) + HCl (g) If a chemist wants to make 55.0 g of HCl, how much ClO2 is needed?
asked by Carrie 
Math
An airplane over the Pacific Ocean sights an atoll at an 7° angle of depression. If the plane is 850 m above the water, how many kilometers is it from a point 850 m directly above the atoll?
asked by dale 
Chemistry
Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant,S , calculate Zeff for these two ions. Repeat this calculation using Slater's rules to estimate the screening constant, S.
asked by Collin 
biology
during translation, the amino acid detaches from the transfer RNA attaches to the end of a growing protein chain when?
asked by addi 
Chemistry
Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)2H2O(g) 2Hg(l) + Cl2(g) Hg2Cl2(s)
asked by Kevin 
Chemistry
What is the weakness of the BronstedLowry acids and bases theory?
asked by Dewa 
Math
Based on its degree, what kind of polynomial is this? h(x)=x^2+2x5
asked by Anna 
math
the grade of a road is its slope given as a percent. for example, a road with a 6% grade has a slope 6/100. it rises 6 feet for every 100 feet of horizontal run. describe a 100% grade. Do you think you could drive up it?could you walk up it? Is it possible
asked by manal HELP ME 
physics
An energyefficient lightbulb, taking in 25.0 W of power, can produce the same level of brightness as a conventional bulb operating at power 100 W. The lifetime of the energyefficient bulb is 10,000 h and its purchase price is $17.00, whereas the
asked by carlton 
SCIENCE(FOSSILS)
Soft body parts may be preserved for long periods of time by___ IS IT AMBER
asked by Adam 
Physics
A metal sphere has a charge of +12uC(microcoulombs). What is the net charge after 2.1 x 10^13 electrons have been placed on it?
asked by Kay 
chemistry
I need to find out Molar solubility of CuS. How many grams of CuS are present in 15.0 L of a saturated CuS solution,
asked by Ashley 
Chemistry
I have answered this as best as I can please can you check and help me with the ones I don't have a clue about? Thank you Which of the moelcules listed below possesses a permanent dipole? Think about the shape of the molecule and look at the
asked by ? 
Physics
This question was posted earlier but the explanation given was confusing. The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an
asked by Me 
Chemistry
A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac
asked by Mike 
geometry
The measure of an interior angle of a regular ngon is 140 degree. How many sides are in the regular polygon?
asked by alisa 
Chemistry
C15H30 is a hydrocarbon that reacts with oxygen gas to give carbon dioxide and water. Calculate the mass of water (grams) formed when 724.05 grams of the hydrocarbon reacts with the oxygen gas.
asked by Kim 
English
I urgently need you to revise these sentences (instructions), please. 1)Explain to a friend of yours who has never flown what he/she should do before boarding a plane. 2) Talk about the place where you live using the following grid: . – What is your town
asked by Henry2 
physics
An electric guitar’s amplifier is at a distance of 4.6 m. Find the intensity of its sound waves when its power output is 0.18 W. Answer in units of W/m2
asked by Anonymous 
chemistry
When gas is burned: CH4 + 2O2 = CO2 + 2H2O, how many moles of water are produced when 6.2 mol of methane are burned?
asked by Lisa 
Science
What is the difference between the focus of an earthquake and its epicenter?
asked by Shirley 
statistics
. As a part of their customerservice program, United Airlines wanted to select 10 passengers from today's 9 A.M. ChicagoTampa flight to be interviewed regarding airport facilities, service, and amenities in the waiting area. Each passenger was given a
asked by Latoya 
math
what's the slope of the roof on adobe house?why might a roof in connecticut be steeper than a roof in the desert?
asked by manal HELP ME 
math
cos theta = 5/13 with pi/2 < theta
asked by Yul 
Geometry
How many pieces of square floor tile, 1 foot on a side, would you have to buy to tile a floor that is 11 feet 6 inches by 8 feet?
asked by christy 
physics
A hockey puck has a mass of 0.125 kg and is at rest. A hockey player makes a shot, exerting a constant force of 32.5 N on the puck for 0.16 s. With what speed does it head toward the goal?
asked by Fillintheblank 
Physics
Flooded Basement Water is pumped steadily out of a flooded basement at a speed of 5.5 m/s through a uniform hose of radius 0.8 cm. The hose passes out through a window 3.1 m above the waterline. What is the power of the pump?
asked by Alex 
Physics
The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an axis through the center? (Diagram shows equilateral triangle with 500g
asked by Please Help! 
math
Lena Horn bought a Toyota Tundra for $30,000 with an estimated life of 5 years. The residual value of the truck is $5,000. Assume a straight line method of depreciation (a) what will be the book value of the truck at the end of year 4 (b) If tyhe chevy
asked by Anonymous 
geometry
If the sum of the measures of the interior angles of a convex ngon is equal to the sum of the measures of the exterior angles, how many sides does the ngon have?
asked by alisa 
math
using problem 1721 calculate the first 2 years depreciation assuming the units of production method. this machine is expceted to produce 120,000 units. in year 1 it produced 19,000 units and in year 2 38,000 units problem 1721 Jim company bought a
asked by Anonymous 
Chemistry
Ionic bonding typically occurs when a ______________ bonds with a ______________
asked by Help 
physics.pls help
Why is it important to asaume that a rope under tension is taut and does not stretch. pls help
asked by ted 
Corporate Finance
You can insulate your home for $7,200. You figure you can save 15% per year on your heating bill if you insulate. Your home was bought 15 years ago for $38,500. You figure real estate prices have gone up 16% each year. You plan to live in the house another
asked by Sniper619 
chemistry
In a reaction vessel, the following reaction was carried out using 0.250 mol of NH3 and 0.100 mol of N2, 4NH3(l) + N2 (g) = 3N2H4 (l) what is the compositon in moles in the vessel when the reaction is completed? Is the answer: 0 mol NH3, 0.063 mol N2, and
asked by Lisa 
Math
Jeff Associates borrowed $30,000. The company plans to set up a sinking fund that will repay the loan at the end of 8 years. Assume a 12 % interest rate compounded semiannually. What must Jeff pay into the fund each period of time?
asked by Anonymous 
algebra
A 4m by 6m rug covers half of the floor area of a room and leaves a uniform strip of bare floor around the edges. What are the dimensions of the room?
asked by amanda 
ACCOUnting
Chen Company manufactures basketballs. Materials are added at the beginning of the production process and conversion costs are incurred uniformly. Production and cost data for the month of July 2010 are as follows. Production DataBasketballs Units Percent
asked by BILLY 
physics
Suppose the ball is kicked horizontally with an initial speed of 9.37m/s. If the ball travels a horizontal distance of distnace 85 meters, how tall is the mountain?
asked by Brooke 
Chemistry
Recently, there has been much concern about pollution in the home from radon, a radioactive gas whose elemental molar mass is 222 g/mol. The Environmental Protection Agency say that a level or radon of 3.6 X 1011 giL of air is unhealthy. At this level,
asked by Arnol 
algebra
A worker placed white tiles around black tiles in the pattern shown in the three figures bellow. Based on this pattern, how many tiles would be needed for 14 black tiles?
asked by Anonymous 
ph
A 20.0 kg block is connected to a 30.0 kg block by a string that passes over a light, frictionless pulley. The 30.0 kg block is connected to a spring that has negligible mass and a force constant of 300 N/m, as shown in the figure below. The spring is
asked by carlton 
Chemistry
For the following Reaction: 2AgNO3 + CaBr2 = 2AgBr + CaN2O6 If a chemist starts with 12.0g AgNO3, how many grams of CaBr2 must be added to use up all of the AgNO3?
asked by Carrie 
History
Please Help. I would like to ask if it would have been possible with out the prior development of the Enlightenment? For instance, if some of the main issues that troubled Martin Luther (such as the Catholic Church's practice of requiring "tributes" for
asked by John 
physics
A 20.0 kg block is connected to a 30.0 kg block by a string that passes over a light, frictionless pulley. The 30.0 kg block is connected to a spring that has negligible mass and a force constant of 300 N/m, as shown in the figure below. The spring is
asked by carlton 
Chemistry
What is the electron geometry if you have 4 electron groups around the center atom?
asked by Lisa 
English
The teacher should take attendance every day. Verb phrase is should take. IS this a linking or action verb and why?
asked by Kelley 
physics
It has been suggested that rotating cylinders about 9 mi long and 5.1 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the freefall acceleration
asked by Anonymous 
math AIG (Ms.Sue)
Find the range,median,mode,and mean. 97,88,93,90,85,100 range:_ median:_ mode:_ mean:_
asked by lidia 
Finance
For the first time in a very long time (perhaps ever!), the concept of financial risk and risk management has become a topic of concern at Presidential press conferences. Such concern has centered on esoteric financial products such as derivatives that are
asked by ALLIE 
algebra
How do I solve a linear equation using equality properties?
asked by mom 
Science
Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
asked by Jason 
Physics
Find the centripetal accelerations at each of the following points due to the rotation of Earth about its axis. (a) a point on the Equator of Earth ? m/s2 (b) the North Pole ? m/s2
asked by Anonymous 
physics
For safety in climbing, a mountaineer uses a nylon rope that is 65 m long and 0.9 cm in diameter. When supporting a 92kg climber, the rope elongates 2.0 m. Find its Young's modulus.
asked by jim 
Accounting
Materials costs of $300,000 and conversion costs of $321,300 were charged to a processing department in the month of September. Materials are added at the beginning of the process, while conversion costs are incurred uniformly throughout the process. There
asked by MAVIS 
chemestry C
how many moles of aluminum oxide can be produce from 12.8 moles of oxigen gas reacting with execess aluminum
asked by lola 
Physics
A square conducting loop with sides of length L is rotation at a constant angular speed of, w (omega), in a uniform magnetic field of magnitude B. At time t=0, the loop is oriented so that the direction normal to the loop is aligned with the magnetic
asked by Jasmine 
physics
Let a force of 1500 Newtons act through a distance of 200 meters on a 1500 kg car which starts from rest. a. What is the work done? b. What is the final velocity? c. What is the car's momentum? d. What is the car's change in momentum? e. What is the car's
asked by Ryan 
math
Can someone help with me this question? 1. Lea spent $25 of the money she saved. She still has 60% of her money left. How much does have left? 0.60 x 25=$15? 2. A 2.6L container of juice costs $3.00. How much are you paying for 1 L?
asked by Joey 
socials
for the question how did canadas policy of total war change the economy? why was the policy necessary? for this one i wrote that canada manufacture lots of things like military vehicles, tanks. Ships for navy, new planes, and bombers, military vehicles and
asked by Mohammad 
Geometry
A man has a garden 10 meters square to fence. How many fence posts are needed if each post is 1 meter from the adjacent posts? Question says to show work.
asked by christy 
Chem
The electrochemical cell described by the balanced chemical equation has a standard emf of 0.25 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures. MnO2(s) + Pb2+(aq) → Mn2+(aq) + PbO2(s) St. Red. Pot. (V)
asked by Jess 
Trig
Solve the equation in the given domain cos 4x + cos 2x = 0, 0
asked by Mark 
social studies
how did the wright brothers invention change the world?
asked by Anonymous 
Introduction to Psychology
Both Albert's mother and father had dropped out of high school. His brother left school in the eighth grade. Based on the performance of his family members, Albert does not expect that he will complete high school. He had developed a(n): a. availability
asked by Anonymous 
Physics help!
How far from the center of the Earth (in km) is the center of mass of the Earth + satellite system if the satellite has a mass of 6560 kg and is in orbit 46200 km above the surface of the Earth. The mass of the Earth is 5.98 * 10^24 kg and the radius of
asked by Me 
Physics
A small block of mass m1 = 0.500 kg is released from rest at the top of acurvedshaped frictionless wedge of mass m2 =3.00 kg, which sits on a frictionless horizontal surface as inFigure P9.60a. When the block leaves the wedge, its velocity ismeasured to
asked by Marie 
chemistry
Discussion Question 1 State three examples each of acids, bases, and salts commonly used in therapeutic processes. From the examples you state, select one acid, one base, and one salt and describe how and where they are used in therapeutic processes.
asked by carolyn 
Math
A fence 8 ft tall runs parallel to a tall building at a distance of 4 ft from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building?
asked by Emily 
Physics
It has been suggested that rotating cylinders about 9 mi long and 5.1 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the freefall acceleration
asked by Anonymous 
History
How does the process of quarantine change from the Indians (small pox), Italians (typhoid) to the Chinese (bubonic plague)? Explain.
asked by Curt 
world history
Which of the following statements is true of the Ice Age that began 150,000 years ago? A. Many humans enjoyed high levels of nutrition and long days of leisure. B. Culture varied greatly throughout the inhabited world. C. Humans didn't use highly
asked by firedup 
Physics
What is the angular momentum (in kg*m*m/s) of a 790 gram symmetrical rotating bar which is 2.85 m long and spinning at 245 rpm about the center of the bar?
asked by dan 
Chem
The galvanic cell described by the cell notation has a standard emf (electromotive force) of 4.05 V. Calculate the value (kJ) for the ΔG˚ of the cell. Round your answer to 3 significant figures. Mn(s) l Mn2+(aq) ll F2(g) l F(aq) l Pt(s) St. Red. Pot.
asked by Jess 
Calculus
The sun is passing directly over an 80ft. tall building. The shadow is 60ft. long when the angle (theta) that the sun makes with level ground is increasing at the rate of .327 radians per minute. At what rate is the shadow decreasing. (express your answer
asked by Michael 
Calc
A rational function f(x) contains quadratic functions in both the numerator and denominator. Also the function f(x) has a vertical asymptote at x=5, a single x intercept of (2,0) and f is removeably discontinuous at x=1 because the lim x> 1 is 1/9. Find
asked by Gretchen 
Chemistry
In VSEPR, which of the following is considered a single electron group?
asked by Frances 
Math
How do you do this..i have the answer i just need a step by step way to solve this.. sec(sin^1 (2/5))
asked by Trig 
algebra
An annuity pays 7300 dollars on January 1 of each year, starting on January 1, 2000. If 16 payments are made and the effective rate of interest is 8.5 percent, what is the present value of the annuity on January 1, 1999?
asked by Anonymous 
physics
A car (m = 770.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 45.0 m. Find the average power the engine must deliver to reach a speed of 20.9 m/s at the top of the hill in 19.5 s(NEGLECT frictional losses:
asked by Anonymous 
Rati and Rates Problems
1.Write two equivalent ratios for the given ratio. a. 4/12 b. 11/33 SHOW WORK
asked by kelly 
geometry
Dru is challanged by her geomtry teacher to estimate the height of the school flag pole without measuring. She decided to walk off the length of the shadow cast by the pole by successively walking the noted length of her own shadow. If Dru is 5ft 6inches
asked by alisa 
Math
input output 12 10 ? 16 32 ? 62 35 70 39 86 ? what's my rule?
asked by Thomas 
Math
A famous detective was called in to solve a baffling murder mystery. He determined there was only one cause of death along with the following facts: a.Mr. Harold, the murdered man, was killed by a blow on the head with a brass candlestick. b.Either his
asked by Dell 
Chemistry
Please help me arrange these elements in decreasing order of metallic property. I, Mg, Al, Rb, Ca Thank You
asked by Jennifer 
Chemistry
How many 9.5 gram ice cubes will you have to put into 500 ml of water to cool the water from 22°C to 18°C?
asked by Walt 
chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
asked by susan 
physics
A shopper in a supermarket pushes a loaded 31 kg cart with a horizontal force of 12 N. The acceleration of gravity is 9.81 m/s2 . a) Disregarding friction, how far will the cart move in 3.6 s, starting from rest? Answer in units of m
asked by Jessica 
FINANCE
Would the savvy use of financial logic involved in holding inventories of both stocks and bonds even if they change over time be of benefit to you and your investment portfolio?
asked by BILLY 
CHEMISTRY
(Repost) Write the equilibrium constant expression, K, for each of the following reactions. Where appropriate, designate the K as Ksp. 2H2(g) + O2(g)2H2O(g) 2Hg(l) + Cl2(g) Hg2Cl2(s)
asked by Kevin 
geometry
what shape is NOT equilateral? A)rhombus B)rectangle C)square D)regular polygon what shape is NOT equiangular? A)rhombus B)rectangle C)square D)regular polygon
asked by alisa 
physics
What force must be applied to push a carton weighing 220 N up a 20° incline, if the coefficient of kinetic friction is 0.39? Assume the force is applied parallel to the incline and the velocity is constant
asked by Sam 
chemistry
Given the following reaction: HCl(g) + SrO(s) → SrCl2(s) + H2O Calculate the mass of HCl in grams that would react with 7.70 kg SrO
asked by riali 
Algebra
The area of the smallest (shaded) square measures 1 square unit. What is the area of the largest square? (there are 7 squares) Please help me!!!
asked by Audrey 
Physics
What is the angular momentum (in kg*m*m/s) of a 880 g symmetrical rotating bar which is 2.70 m long and spinning at 185 rpm about the center of the bar?
asked by Helpppp 
SCIENCE PLZZ HELP
Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
asked by Jason 
statistics
A student took a 25 question true and false test answering the question randomly without reading. If a score of 18 is correct is the minimum passing graade, how likely is it that the random guesser will pass the test? This is binomial although there is a
asked by brian 
chemistry
Looking for Ksp  Compound: SrCO3 [Cation] : 2.4 x 10^5 [Anion] : 2.4 x 10^5 Ksp ?? Assume all concentrations are equilibrium constant in M, (mol/L)
asked by Sarah 
chemistry
calculate 5.7 grams PbCl2= ions Cl1
asked by nina 
physics
How many calories of heat are required to convert 230 grams of ice at 10.0C to a gas with a temperature of 1500C?
asked by michelle 
Social Studies
Here is the question .. How did the Enlightenment contribute to the Industrial Revolution? A) People used technology to create greater prosperity for all. B) Reasoning was used to solve human problems. C) Electricity used in the production of material
asked by Brooke 
Math
You work at a grocery store. You hourly rate is greater after 6:00p.m. than it is during the day. One week you work 20 daytime hours and 20 evening hours and earn $280. Another week you work 30 daytime hours and 12 evening hours and earn a total of $276.
asked by Lynn 
geometry
Is it possible to construct a triangle with sides 4,5,9? If not, explain why.
asked by alisa 
Calculus
You are the owner of a delivery company with one truck. The trucks fuel economy is 1200/x miles per gallon when driving at x miles per hour (where 80 >= x
asked by Ass10 
geometry
The sides of an acute triangle are x, 35, and 37, where x is the shortest side. Find the range of possible values for x and express it as an inequality
asked by alisa 
Chemistry
Help arrange these elements in decreasing order of metallic property I, Mg, Al, Rb, Ca
asked by Anonymous 
Calculus
S=6x^2 is the surface area of a cube. Find the exact change in surface area when x is increased from 6 cm to 6.1 cm . Please Help. It makes no sense.
asked by MiKe 
physics
a hockey player skating at 19 m/s comes to a complete stop in 2.3 m. what is the acceleration of the hockey player?
asked by Anonymous 
physics
A 10.0 kg block is released from point A in the figure below. The track is frictionless except for the portion between points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2300 N/m, and compresses
asked by carlton 
Physics
If you push the outer edge of a 1.05mwide door with a 23.0N tangential force, what torque results? What is the torque if you apply the same magnitude of force, in the same place, but at a 45 degree angle?
asked by Jordyn 
English
What are the differences between the characters Johnny and dally, in the story The Outsiders by S.E. Hinton?
asked by Melissa 
SCience(fossils)
Structures in different animals that have similar functions but are different in evolutionary origin and pattern if development are said to be______________ IS IT HOMOLOGOUS STRUCTURE
asked by Adam 
Math
Last year,your class held a fundraiser and donated 850 dollars to a local charity.This year,your class's donation increased by 24%.How much did your class donate this year?
asked by Sarah 
chemistry
when burned, methane gives off heat at a rate of 342 J/g. How many kilojoules of heat will be given off when 4.50 kg burns?
asked by Doug 
Physics :(
What is the angular momentum (in kg*m*m/s) of a 880 g symmetrical rotating bar which is 2.70 m long and spinning at 185 rpm about the center of the bar?
asked by Me 
Chemistry
how would you distinguish two white solids AgCl and Hg2Cl2? How would you distinguish between two solutions Cu(NO3)2 and Ni(NO3)2?
asked by Dant'e 
English
Here is another exercise I include on the use of the infinitive/gerund. Complete the following sentences using gerund or infinitive (with or without to) forms of the verbs in brackets. 1. She swore (tell) __________ the truth. 2. She mentioned (move)
asked by Henry2 
calculus
What is the derivative of (12,000) / 1+39e^(1.2t)
asked by connie 
Math
Heidi says 381= 2 hundreds, 7 tens, 11 ones. Do you agree? Explain.
asked by sandra 
Math
What are the xintercept of the graph of 35x^220=60x
asked by Lilly 
Physic Help please
an object of mass 1.5 kg on a spring of force constant 600N/m loses 3% of its energy in each cycle.THE SYSTEM IS DRIVEn by a sinosuidal force with maximim value of F0=0.5N.(a) What is Q for this system?.(b) What is the resonance (angluar)frequency? (c) If
asked by jjena 
Introduction to Psychology
Based on the theory of multiple intelligences by Gardner, most people exhibit: a. intelligences that function in isolation. b. a single intelligence. c. one dominate intelligence. d. all eight intelligences in different degrees. I think it is b or d.
asked by Anonymous 
venn
how to draw a venn diagram for: A is a subset of B; C is a subset of B; A and C have no elements in common
asked by Dell 
Algebra
I have two questions 1.What is the population of a town after 6 years if it is increasing annually by 3.5%. The population is at 6,000 people right now. I did6000x(1+0.035)^6 = 7375.53 or 7376 people 2. The value of car is 28,000 dollars. If car
asked by Trisha 
Math
Raising Maine magazine's August 5,2009, Home GREEN Home" article about going green discusses ways to improve a home's energy efficiency while keeping conservation in mind. From an efficient floor plan, to a house plan maximizing sunlight, triplepane glass
asked by Anonymous 
english
Are the following sentences fragments, runon or complete sentences? 1.You better believe what I say to be true. 2.Listen carefully to what the teacher has to say. 3. I have always wanted to live in England, but I am afraid I will only get to visit at this
asked by Matt 
Physics please help
How far from the center of the Earth (in km) is the center of mass of the Earth + satellite system if the satellite has a mass of 6560 kg and is in orbit 46200 km above the surface of the Earth. The mass of the Earth is 5.98 * 10^24 kg and the radius of
asked by Me 
math
Suppose you borrow $12,000, which you must pay back in 30 equal monthly payments, each of which includes a .8% interest charge on the unpaid balance. a) How much will you need to pay each month? b) How much money did the bank make on this deal?
asked by Clara 
chemistryBuffer Q
You have a solution of .5 L of 1.74g of NH3 and 4.15g of (NH4)2SO4. How many ml of 14M HCl is required for a pH of 9.00? I don't know how to go finish this one. I thought about figuring the concentrations of each (NH3, NH4), making an ice table and solving
asked by matt 
statistics
If there are 200 students in a sample, and the mean = 45 and the standard deviation = 4. How many of these students will have a score under 41?
asked by Julie 
chemistry
if 50.0 mLs of HCl of unknown concentration is titrated to neutrality with 90.0 mL of .650 M NaOH. calculate the molarity of the HCl
asked by susan 
physics
A shopper in a supermarket pushes a loaded 31 kg cart with a horizontal force of 12 N. The acceleration of gravity is 9.81 m/s2 . a) Disregarding friction, how far will the cart move in 3.6 s, starting from rest? Answer in units of m
asked by Jessica 
English
Thank you very much. Could you please check these sentences, too? 1) Explain to a friend of yours who has never flown what he/she should do before boarding a plane? 2) Talk about the place where you live using the following grid: . – What is your town
asked by Henry2 
ece 201
ECE 201 Intro to Early Childhood Behavior Management ashford university does anyone have the course schedule
asked by samantha 
Calculus
V=4/3 pi r ^3 is the formula for the volume of a sphere. Find dV for a sphere if the radius of 10" is increased by .1" Please help. I have no idea how to do this problem!
asked by Michael 
chemistry
A sample of H2 with a volume of 35.0 L at STP is reacted with excess O2 to produce H2O. How many grams of H2O are produced? 2 H2 (g) + O2 (g) > 2 H2O (g)
asked by Anonymous 
math quick help!
The area of the smallest (shaded) square measures 1 square unit. What is the area of the largest square? (there are 7 squares) Please, please, please help me!!!
asked by Audrey 
trig
an isosceles triangle has a perimeter of 60in. the congruent sides measure (2x+9)cm. the length of the third side is 3xcm. what is the value of X?
asked by Joey 
Math Finance please help
Five years ago, you bought a house for $151,000. You had a down payment of $30,000, which meant you took out a loan for $121,000. Your interest rate was $5.75% fixed. You would like to pay more on your loan. You check your bank statement and find the
asked by Taccara 
Calculus
Find the centroid of the area bounded by the curves: sqrt(x)+sqrt(y)=sqrt(a) x=0 y=0
asked by Shayna 
History Question
Why did small pox have such an impact on the New World?
asked by JaShir 
geometry
How would you write that line segment PK has equal length with line segment OQ?
asked by KC 
History
Please help. What was one of the powerful movements that transformed European society during the early modern era?
asked by John 
math
A triangle has sides that are 6 inches, 8 inches, and 10 inches long. What kind of triangle is it?
asked by khrys 
algebra
solve the inequality. Express the solution using interval notation and graph the solution set on the real number line x4/x^24 greater or equal to O
asked by lan 
Algebra
Help pleaseI'm totally lost How would I simplify (2x^5 y^4 z^3/x^1 y^5 z^5)^1 Thank you for any help you can give meI'm so stuck for my homeowrk tonight. I know I can bring up the negatives to top and negative to bottom to make them positive but
asked by Mattie 
algebra pls help
A numbmer is divided by 2, then 6 is submtacted from the result. what operations are needed to return to the original number? I am going to say: x/2 6 the operations needed are multiplication and addition to get right answer?
asked by marko 
trig
If sin(t) = 2/48 and cos(t) < 0 what is the value of cos(t) to the nearest thousandth? If sin(t) = 14/34 and cos(t) < 0, what is the value of tan(t) to the nearest thousandth? If tan(t) = 15/19 and sin(t) < 0, what is sin(t) to the nearest thousandth?
asked by Jared Smith 
statistics
the property restoration company is considering switching to new degumidifiers. Their market research, considering the cost of the4 new machines and their efficiency, tells them that the switch would give them a 96% chance of making a $20,000 profit, a 1%
asked by boopathy 
calculus
A rational function f(x) contains quadratic functions in both the numerator and denominator. Also the function f(x) has a vertical asymptote at x=5, a single x intercept of (2,0) and f is removeably discontinuous at x=1 because the lim x> 1 is 1/9. Find
asked by Gretchen 
algebra
Using the following pattern determine the number in the 4th place: 9, 12, 18, .....
asked by Anonymous 
Physics
Two nearby nodes of a standing wave are separated by 4.5 m. If the frequency of the wave is 184 Hz, what is the speed of the wave?
asked by Anon 
Geometry
A rectangular city block measures 105 by 88 meters.The city council wants to divide the block into two triangles of equal area. What is the length of the hypotenuse of each triangular area?( I already found the area of the whole rectangle and the area of
asked by Anonymous 
Econ  help please
demand for sulfur dioxide by coalfired electricity electricity producers is: P= 1,000  16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With no policies or restrictions on sulfur
asked by Sushmitha 
Physics
Describe 4 everyday situations where mechanical energy is approximately conserved because work done by the nonconservative forces is ignorable. Please mention which nonconservative force is doing negligible work in each case you cite. Thank you!
asked by Jasmin 
math
Holly ordered 2 pounds and 9 ounces of roast beef and 3 pounds and 9 ounces of ham. How much meat did Holly order?
asked by Sanaya 
Econ more help please
See question below at **** Suppose local govt decides that a tax is the best way to address the inefficiency created by outdoor concerts. Assuming the social cost curve and the private cost curve are parallel to each other, how much does the tax on
asked by Anil 
English
I forgot to include this sentence. Thank you. 1. Complete the second sentence so that it has the same meaning as the first.
asked by Henry2 
ECON
demand for sulfur dioxide by coalfired electricity electricity producers is: P= 1,000  16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With no policies or restrictions on sulfur
asked by Sushmitha 
geometry
If FD=4x27, and SG is congruent to FD and SG=2x3, Then whais the length of SG?
asked by KC 
Calculus
Express the inverse of (f o g) in terms of f^1 and g^1
asked by Shayna 
English
I urgently need you to revise the following sentences I have to include in an email. 1) Thank you for answering my last email and letting me know you are going to find another theme for our Comenius project with your French partner. 2) As I'm holding a
asked by Henry2 
Math
The domain of a function, f(x), is all numbers between 1 and 6, inclusive. The range of this function is all numbers between 0 and 12, inclusive. a) What is the domain of .5f(3x)? b) What is the range of .5f(3x)?
asked by Clara 
math
For each of the following, draw a Venn diagram. (a) A º B, C º B, A ¿ C = ∅ (b) A » C, B ¿ C = ∅.
asked by Dell 
venn
how to draw a venn diagram for: C is a subset of A; B and C have no elements in common
asked by Dell 
Chemistry
Carbon tetrachloride CCl4 contains carbon (EN = 2.5) and chloride (EN = 3.0). Because of this, CCl4 is:
asked by Lance 
chemistry
For the reaction: A + 3B = 4C Which of the following provides the direct link between the amount of reactant A and the amount of product C? coefficients in the equation molar mass of C the reactant B or molar mass of A?
asked by Lisa 
geography
1. What is the name of the bay that is connected to the Atlantic Ocean by the Hudson Strait? The Hudson Bay 2.What is the body of water that separates Iran from Saudi Arabia? The Persian Gulf 3. Which of the following cities is farthest north: Nebraska,
asked by Reed 
english
rite a 1,400 to 1,750word paper in which you do the following: oEvaluate the literary elements and structural devices in the selected poems and literature. oDescribe images of diverse cultureethnicity, race, class, gender, and ageand stereotyping that
asked by joann 
MathHelp please?
Michael owns 300 shares of a certain stock. Suppose the price of the stock drops by $4 per share. Write a multiplication equation to find the change in Michael's investment. I put 300x(300x[4]) is that right?
asked by Anna 
english
What is the def. Of the word thingaling how how to put it into a sentence. Can not find in dictionary.
asked by Nancy 
Math
What is the value of A in the multiplication sentence if x=45? (x+a)(xA)=2009
asked by Terry 
Algebra
Divide 4x^3 + 24x^2 – 24x + 4 by x^2 – 5x + 1
asked by Linda 
math
cos theta = 5/13 with pi/2 < theta
asked by Yul 
Physics
water flows smoothly from the lefthand pipe section (radius 2.00R), through the middle section (radius R), and into the righthand section (radius 3.00R). The speed of the water in the middle section is 0.460 m/s. What is the net work done on 0.430 m3 of
asked by Alex 
science
An earthquake occurs far from an observing station and produces P, S, and surface waves. Do all the wave arrive at the same time? If not, which arrives first and which last?
asked by Shirley 
English
Could you please check these sentences, too? 1) To begin with, I’ll have potato soup. I couldn’t help laughing. 2) I’m worried about Brian’s arriving so late. She admitted eating all the cakes. 3)I couldn’t do anything but put off (postpone) the
asked by Henry2 
English
I am trying to understand my essay question, but need help putting it in simpler terms. Question: How does Selvadurai’s text encourage a critique of normative ideas about gender and/or sexuality?
asked by Selena 
English
Suddenly, a rainbow appeared in the sky. Is sky an adverb because it tells where the rainbow appeared? also, The hard working plumber was early. Was early is the verb phrase. I have trouble labeling it linking or action verb because it seems like both to
asked by Kelley 
geometry
If all four sides of a quadrilateral measure the same length, and one coner angle measures 90 degree, what shape can the quadrilateral be A)rhombus B)rectangle C)square D)parallelogram E)all of these
asked by alisa 
Informal Logic
Write two arguments in English,one in the form of modus poens and one in the form of modus tollens. Then write the arguments in symbols using sentence letters and truthfunctional connectives. Whay advantage does being able to symbolize our arguments
asked by Cindy 
Math
A store's sign is the shape of an equilateral triangle. One side measures 21 inches. What is the length of each of the other two sides?
asked by Sarah 
Chemistry
The Aufbau Principle is concerned with what?
asked by Betty 
report
I'm doing a Point Of Interest report on: *Grand Canyon * NASA NASA is in Houston TX I have NO clue about any one of these!! What do I do??
asked by lizzy 
Chemistry
What is considered a secondary alcohol ?
asked by Amy 
History
How did the baby boom, postwar prosperity, advertising, mass culture, and mass consumerism lead to a generational consciousness and, in some cases, help to "radicalize" many young Americans? How did the cultural radicalism of the 1960s affect attitudes
asked by BILLY 
English
MY ancestors are Irish. Is Irish a predicate noun
asked by Beth 
algebra
Suppose that Jane borrows 7800 dollars from a bank on April 24 at an annual rate of 7 percent simple interest. How much does she owe on August 14 of the same year?
asked by Rachel 
Chemm
Find the OH concentration of a solution that is 0.198 M NaOH and 0.262M NH4Cl. I did the ice table,using OH from NaOH for an initial, and NH4 from the NH4Cl molecule, and ended with .20M. But that's not right apparently...
asked by Rick 
Math
Solve the equation by factoring, by finding square roots, or by using the quadratic formula. 3(x+4)^2= 27
asked by Lilly 
geography (Ms. Sue)
I did copy the question wrong. It was states and not cities like I had. Thank You once again!
asked by Reed 
Chemistry
Give two bronsted acidbase that are not Arrhenius bases.
asked by Dewa 
calculus
Estimate the area of the region under the curve y = ln(x) for 1 ≤ x ≤ 5. Use the lefthand rule with n = 50. (Round your answer to four decimal places.)
asked by Anonymous 
Computer Science (MATLAB)
Given an arbitrary one dimensional vector v imputed by the user for example v='Helllllloooooo' or v='Helo' I was able to append empty characters onto any one dimensional vector that the user can enter so that way the total length of the vector is a
asked by Jhon 
Geometry
boat dock is 9 ft above water level if a 41 ft rope is attached to the dock on one side and to the boat on the other side, what is the horizontal distance from the dock to the boat?
asked by Rosalind 
physics
A planet orbits its star in a circular orbit (uniform circular motion) of radius 1.62x10^11 m. The orbital period of the planet around its star is 37.0 years. Determine the following quantities for this orbital motion: Angular acceleration , Tangential
asked by sand 
SCIENCE
What are some energies from sunlight??
asked by Jason 
algebra
I do not know how to do this problem, please help. (35b^3 + 25b^2 + 30b + 44)divided by (5b + 5)
asked by jane 
english
Leadership Traits of Effective Managers. I NEED SOME GOOD ARTICLES FOR THIS TOPIC.
asked by JJ 
Physics
A 1.7 kg otter starts from rest at the top of a muddy incline 89.2 cm long and slides down to the bottom in 0.60 s. What net external force acts on the otter along the incline? Answer in units of N
asked by Ryan 
ASAP ENGLISH PAPER
i am writing a paper for English the question is what ethical problems may rise in research on humans?List and describe the three principles researchers are supposed to be guided by in resolving dilemmas. I AM STUCK PLEASE HELP ME!!!!!!
asked by maria 
algebra 1
write an equation for the line that is perpendicular to the given line and that passes through the given point. (6,4);y=3x2
asked by rachel 
Socials
for the question like 2 days ago. About world war I and World war 2 announcement. I think I may be wrong because people were happy to go to ww1 they thought it be fun and easy money but ww2 they had to go no choice. they need to step out of depression only
asked by Mohammad 
physic
an object of mass 1.5 kg on a spring of force constant 600N/m loses 3% of its energy in each cycle.THE SYSTEM IS DRIVEn by a sinosuidal force with maximim value of F0=0.5N.(a) What is Q for this system?.(b) What is the resonance (angluar)frequency? (c) If
asked by jjena 
chemistry
A sample of gas at 80°C is cooled by 30 degrees until its final volume is 1.75 L. If the pressure remains constant, what was the initial volume of the gas.
asked by mary 
trig
cosθ =5/13 with π/2 < θ
asked by Yul 
Econ  more help please
demand for sulfur dioxide by coalfired electricity electricity producers is: Firm A's demand: P= 1,000  80 Q Firm b's demand: P= 1,000  20 Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide.
asked by Sushmitha 
soc. stud.
how could you use the Sons of Liberty today to have your voice heard?
asked by Bre 
english
Hi, I'm writing about this movie and we have to pick from specific categories: writing, cinematography, editing and acting. I'm writing about the sound of the movie because it's a musical. Of which of the 4 categories would sound fall under?
asked by Jon 
algebra
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x – 15y = 12 3x + 24y = 12
asked by Linda 
Econ  urgent please help
Suppose local govt decides that a tax is the best way to address the inefficiency created by outdoor concerts. Assuming the social cost curve and the private cost curve are parallel to each other, how much does the tax on concerts have to be to achieve the
asked by Anil 
astronomy
At an average opposition, the Earth and Mars are separated by 0.52 AU. Suppose an astronomer observes Mars at opposition and that seeing blurs the images to a resolution of 1.0 seconds of arc. What is the smallest surface feature the astronomer would be
asked by Matt 
Chemistry
Electrons in the outermost principal shell of an atom that are involved in chemical bonding are referred to as:
asked by Ed 
Chemistry
Boiling occurs when?
asked by Lance 
accounting
After filling out a perpetual inventory card using fifo i need to find out how to prepare a journal entry to record a sale of 60 units sold assuming i got 5.00 each for them? Confused
asked by JW 
English
Okay got that one.. What about The cab driver was driving extremely fast down the street. The very phrase is was driving. Was is a linking verb and driving an action. Is it a linking verb or an action verb? Directions say to underline the verb phrase and
asked by Kelley 
geomerty
the angles are supplemantary angles.determines the measure of
asked by miss c 
Chemistry
What happens to the current flow with time in an electrolytic cell ? explain. thank for helping~
asked by limit 
Chemistry
When nonpolar materials suddenly become polarized the most likely reason is due to:
asked by Bob 
Physics
The current in a very long, tightly wound solenoid with radius a and n turns per munit length varies in time according to the equation i(t)=Ct^2, where the current i is in amps and the time t is in seconds, and C is constant with appropriate units.
asked by Jasmine 
Tragedy of Julius Caesar
is cassius is honestly opposed to tyranny
asked by corey 
Science
6 energies of sunlight
asked by XD 
History
How does the industrialization (factories) of cities change the face of labor? Who was involved?
asked by Chantel 
Science
What is 1 energy from the Earth?
asked by :D 
physics
A car that starts out 250 meters east of a gas station at time zero and passes it in 10 seconds. Draw your graph showing the car traveling at least 250 meters past the gas station to the West.
asked by Anonymous 
Math
On December 28, 2007, you could buy a 10year U.S. Treasury note for $10000 that pays 6.29% simple interest every year through December 28, 2017. How much total interest would it earn by then?
asked by Mel 
Math
Make an equation that has solutions x= 9 and x = 2/3
asked by Allison 
Chem
Consider the following reaction: 6A + 2B 5C + 4D Determine the following rates at a time when the rate of consumption of B is 2.5E05 M/s. a) rate of consumption of A M/s b) rate of formation of C M/s c) rate of formation of D M/s d) rate of reaction M/s
asked by Rachel 
math
Prove that R contains a zero divisor if and only if R' does.
asked by Mary 
Math
Can you help me check if I'm doing this correctly or not? I'm solving this quadratic equation by us ing the quadratic equation. 9v^2+35v30=1v 9v^2+36v29=0 36 ± √36^24(9)(29) divided by 2(9) 35 ± √1296 + 1044 divided by 18 36 ± √2340
asked by Lilly 
2nd Semester Classes
I just need someone's personal opinion. I have started looking for a job when I get out of college and graduate with a zoology degree. One thing I have always wanted to do is train marine mammals and it turns out that I am eligable for a position at
asked by Harley 
math
The Ministry of Finance published the FY2009 Tax Reform ( Main Points) on December 19, 2008. Included in the Reform is the introduction of a 2 year measure allowing immediate depreciation for investment in energy saving facilities and appliances. If this
asked by Anonymous 
Managerial Economics
When developing shortrun cost curves, it is assumed that all firms in perfect competition have the same cost curves and they all make identical shortrun profits or losses. Contrast this to the real world and why individual firms might experience
asked by Cindy 
ms. sue thanks
ms. sue thanks for help u give to me with my questions. but still i unsure of that policy one, how it changed i just guess and wrote that canada more involved in war but i don't real understand it.
asked by Mohammad 
polynomial function
p(w)=4(w)^33w4; find p(4) and p(1/4)
asked by bea 
english ASAP
i am writing a paper and i want to write something that was said in the movie how do i give credit ?
asked by katy 
MATH
HOW DO I FIND THE PRODUCT OF 11/15 AND 12/7
asked by MIKE 
History of America
Do you see ways in which these two ideologies are (or could be) related? Explain. The words are anarchism and pacifism. Any kind of help would be great!
asked by anonymous 
Chemistry
The primary reason for forming multiple bonds when manipulating electron dot structures is:
asked by Help 
English
Since the sentence The cab driver was driving extremely fast down the street has both an action verb and a linking verb, what do I say it is action or linking?
asked by Kelley 
ChemBufferQ
You have a solution of .5 L of 1.74g of NH3 and 4.15g of (NH4)2SO4. How many ml of 14M HCl is required for a pH of 9.00? I don't know how to go finish this one. I thought about figuring the concentrations of each (NH3, NH4), making an ice table and solving
asked by Matt 
english
how do i write a thesis statement ? Like teachers always say "What's the Big Idea" or "Universal Idea" and I always think I have it but I never get it right. & I'm embarrassed to say that I am a Senior in High School asking this question __ I have to
asked by LayDeee_B 
english
Please could you help me with 6 words with silent letters ...please
asked by anna 
Math Please Help!
Lalph Rauren was famous for discovering potential models as he walked the streets of New York. One day he spotted four girls who later became top models: Amy, Mary, Kay, and Beth. One was discovered walking through an apartment building, one in a coffee
asked by Julie 
History
Please Help. How did the Islamic Slave Trade change the existing system?
asked by John 
Algebra
Help pleaseI'm totally lost How would I simplify (2x^5 y^4 z^3/x^1 y^5 z^5)^1 Thank you for any help you can give meI'm so stuck for my homeworkk tonight. I know I can bring up the negatives to top and negative to bottom to make them positive but
asked by Mattie 
Art
What are the essential pillars of NeoClassicism? Why is emotion important to the Romantic painters? Why did they use bright vibrant colors?
asked by Sarah 
chemistry
what must be done with the radioactive waste materials that result from splitting atoms and how is this a problem?
asked by Sara 
books
Book: The Trouble with Lemons At the end of Chapter 16, a character says "it's harder to hate a guy when you see that he's got problems like everbody else." Who says this? Explain what is going on in the novel before, during, and after this is said.
asked by Alejandro 
Math  Calculus
find the derivative of: g(x) = log[(x^3+1)^3(x^31)^3)]
asked by TOmmy 
Introduction to Psychology
The experimental rats were being raised in separate environments. One group lived in the traditional cage in a quiet, but well lighted room. They were supplied with plenty of food and water. The second group inhabited "Rat Disney Land." There were colorful
asked by Anonymous 
Opinion, I need many people to respond
There has been a lot of controversy over wheather SeaWorld and other marine parks should keep marine mammals and if they should be allowed back in the water with the orcas after the Dawn's death last year. What do you think? I am currently training to
asked by Harley 
English
I would like to learn more about my ancestors. Is the word " learn" the object of the prep. to and is the word "more" an adjective.
asked by Beth 
College Physics
A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter? I have tried it several times and continue to get an incorrect answer.
asked by Anon14 
accounting
What is the future value on 12/31/2014 of a deposit of $10,000 made of 12/31/2010 assuming interest of 16% compound quarterly.
asked by t 
School
What happens if dams are too big
asked by Alli 
Healthcare
Why is survey research considered a weak research technique? How would you counteract that perception when asked?
asked by pj 
Math
Write the slopeintercept from of the equation of the line through the given points through: (5,4) and (0,4)
asked by Lynn 
pre algebra
What is the answer to (6t^4)(4t^2m^7
asked by kayla 
psychology
. Expectation plays an important role in:
asked by t 
english
what does this mean? how can i summarize it ?? "we acquire language not just because we are taught it, but because we are born with the principles of language. They're in our genes. We have language because of nature, not just nurture"
asked by melissa 
Angermanagement
state how you you hurt your loved one
asked by Udo 
Astronomy
Can someone explain to me this asteroid article??? ?i am so confused! (google: asterioid 21 lutetia:low mass, high densityfirst link)
asked by Rebecca 
english ASAP
how to give credit in an essay?
asked by katy 
math
the difference between 2 numbers is 40? they are in the ratio 9:7. What are the numbers ?
asked by renoir john 
chem
how many molecules will be in 275 grams of c2h6
asked by mandy 
languagge
whats the natural resources of Japan ?
asked by saira 
Chemistry
A sodium cation is what?
asked by Lisa 
SCIENCE
What are 6 energies from the sunlight?
asked by Jason 
Chemistry
Compounds that reduce the surface tension of water are considered to be?
asked by Betty 
Chemistry
Which electron configuration best represents bromine?
asked by Anonymous 
Chemistry
Is this true or false Both sublimation and melting are considered endothermic processes.
asked by Amy 
algebra short response
A nubmer is divided by 2, then 6 is submtacted from the result. what operations are needed to return to the original number? I am going to say: x/2 6 the operations needed are multiplication and addition to get right answer?
asked by marko 
Angermanagement
1. State how you hurt your loved one. What did you do? List all instances of verbal, emotional, or physical abuse. 2. What effects has your behavior had on that person or persons, especially on his/her capacity to sustain the attachment: interest,
asked by Udo 
Angermanagement
1. State how you hurt your loved one. What did you do? List all instances of verbal, emotional, or physical abuse. You could have hurt a loved one in many different ways:  not being honest  loss of trust  cheating on your partner  abusive tendencies;
asked by Udo 
English
2 questions what is the word down in this sentence? 1. Samantha rode her bike the hill. noun or adjective or adverb or verb 2. What is the word sky in this sentence? Suddenly, a rainbow appeared in the sky.
asked by brandon 
algebra
find an equation for the line that passes through the point (6,3)and has slope 1/2
asked by lan 
English
Could you please check this exercise in which sentences need to be changed into the passive using the personal construction? 1) They say he lived in New York. He is said to live in NY. 2) Journalists report that the famous couple is flying to Paris next
asked by Henry2 
algebra
evaluate the following please 25 I put 25 as answer,, is this right the lines are staight lines Thanks for your help.
asked by ann 
Social Studies
Im working on a review booklet for Social Studies and theres a couple questions Im having problems with, my test is tomorrow so I don't have time to ask my teacher , hope you can help ! :) First Question: "The scramble for Africa" began in the late 1800s
asked by Brooke 
literary
The snake hissed loudly and attacked the rat. what literary term does this use?
asked by Lauren 
Science
what is a dilute solution
asked by Chris 
English
Could you please check this other exercise on reporting verbs? Thank you. 1) “Would you like to go for a motorbike ride uphill?”, he said to me. He invited me to go ..... 2) “I’m sorry, I broke your glasses.” He admitted breaking the vase./He
asked by Henry2 
Geometry
Please solve this problem. d=2*x/8
asked by Ally 
English
Thank you. Where should I include commas? Can you check if I set them correctly, please? Explain to a friend of yours, who has never flown, what he/she should do before boarding a plane. 2) Talk about the place where you live using the following grid: .
asked by Henry2 
soc. stud.
how could you use effigies today to have your voice heard?
asked by Bre 
psychology
Sexual arousal in human beings is different from that of animals. It is clear that human sexual arousal can occur
asked by t 
Laboratory Techniques
Calculate the number of moles K2CO3 of and MgCl2 in the 15 ml aliquots of reagent solution
asked by Chemistry 
History
Please Help. What was one of the powerful movements that transformed European society during the early modern era? Between the 16th and 17th centuries.
asked by John 
Math
Which lines are parallel? y=3x+1 3x+y=5 2y=6x+12
asked by Greg 
Astronomy
The distance between the Earth and Mars when the two panets are at opposition varies greatly because of the large eccentricity of Mar's orbit. The perihelion distance of a planet is given by rmin=a(1e)and the aphelion distance by rmax=a(1+e) where a is
asked by Sara 
Chemistry
Condensation is considered an exothermic process is this true?
asked by Betty 
speech
Describe a scenario in which one would expect an opposed audience. Explain context
asked by help 
informal logic
Write two arguments in English, one in the form of modus poens and one in the form of modus tollens. Then write the arguements in symbols usimg sentence letters and truthfunctional connectives. What advantages does being able to symbolize our arguments
asked by rohwer42 
math
integrate (using substitution). (6x^5)(e^(x^6))dx
asked by Jordan 
Science
I need an idea for something cool to do with a polymer pellet?
asked by Anonymous 
Social Studies 7R (answer quick)
I got my Native Americans test back today during ss and I got a 77 (4 qs. wrong there was 10 mulitple and 13 reponse but my teacher think it will take for ever for us to do the test so we had to do all the multiple qs. and for the reponse qs. do 9 qs. and
asked by Laruen 
physics
If the girl from #1 runs off of the jungle gym into her dad's arms, which are 1m above the ground, how fast is she moving just before she's caught by her dad?
asked by Anonymous 
algebra
Using the following pattern determine the number in the 4th place: 9, 12, 18, .....
asked by Anonymous 
science
Distinguish between the foliation of a metamorphic rock and the stratification of a sedimentary rock.
asked by Shirley 
algebra
1.9s+6=3.1s
asked by jim 
english
come up with a thesis statement and have two resources or references to support it
asked by khalilah 
math
5.3+4=3.242.7
asked by megan 
games
unscramble these letters uckpbsa
asked by g crowell 
math
how do u find the expanded algorithm
asked by Marco 
computer science
i need help about blue j from Java.i have project about property. i have almost finish but the end i have error . if there s any one could send me post answer. many thanks
asked by zardasht 
writing
please show me a good writing paragraph
asked by Anonymous 
ALGEBRAHelp please
(2g3)(2g^2 + g  4) IS IT 2g^3  4g^2 + 12
asked by SYNC 
math
5.3+4=3.242.7
asked by megan 
simplest form
6 8
asked by Anonymous