Questions Asked on
January 26, 2011

physics
Suppose 3 mols of neon (an ideal monatomic gas) at STP are compressed slowly and isothermally to 0.19 the original volume. The gas is then allowed to expand quickly and adiabatically back to its original volume. Find the highest temperature attained by the
asked by david 
AP Calculus
Consider the curve given by x^2+4y^2=7+3xy a) Show that dy/dx=(3y2x)/(8y3x) b) Show that there is a point P with xcoordinate 3 at which the line tangent to the curve at P is horizontal. Find the ycoordinate of P. c) Find the value of d^2y/dx^2 (second
asked by Leanna 
physics
Astronauts on our moon must function with an acceleration due to gravity of 0.170g . A. If an astronaut can throw a certain wrench 14.0 { m} vertically upward on earth, how high could he throw it on our moon if he gives it the same starting speed in both
asked by mely 
Fluid Mechanics
it is estimated that it 90 percent of an iceberg's volume is below the surface, while only 10 percent is visible above the surface. for seawater with a density of 1025kg/m^3, estimate the density of the iceberg.
asked by AAAA 
Astronomy
Suppose that future observations with a new telescope reveal a planet about 16 AU from a star whose mass is the same size as our sun's. How long does it take the planet to orbit the star?
asked by Amy 
physics
Two carts with masses of 15.5 kg and 1.0 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.0 m/s and 2.0 m/s, respectively. The carts stick together after colliding headon. Find the final speed of the two
asked by jesse 
Chemistry; Please help
Write formulas for the following. 1. potassium hexacyanoferrate(III) 2. sodium hexafluoroaluminate 3. Pentaaquabromomanganese(III) sulfate 4. hexaamminechromium(III) nitrate 5. sodium tetrahydroxochromate(III) 6.transdichlorobis(ethylenediamine)cobalt
asked by Sharon 
Urgent!!! Physics
At an air show, a jet plane has velocity components Vx = 625 and Vy = 415 at time 3.85s and Vx = 838 and Vy = 365 at time 6.52s . A. For this time interval, find the x component of the plane's average acceleration in km/h2. B. For this time interval, find
asked by andrea 
physics
A typical sugar cube has an edge length of 1.0 cm. If you had a cubical box that contained 1.7 mol of sugar cubes, what would its edge length be? (One mole = 6.02 x 1023 units.) and A severe thunderstorm dumped 2.6 in of rain in 30 min on a town of area 32
asked by nick 
chemistry
Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?
asked by Twynna 
physics
A spider crawling across a table leaps onto a magazine blocking its path. The initial velocity of the spider is 0.860 m/s at an angle of 33.6° above the table, and it lands on the magazine 0.0790 s after leaving the table. Ignore air resistance. How thick
asked by riasrocker 
math
greg exchanged 200 canadian dollars for 1/5 fewer u.s dollars. after spending 3/4 of the u.s dollars, how many did he have left?
asked by sydney 
math
five students make the following guesses on the number of jelly beans in a jar: 72, 78, 68, 60 and 84. the guesses were off by 14, 2, 4, 6 and 10 (not in order). how many jelly beans are in the jar?
asked by kristin 
physics
A daring 510 { N} swimmer dives off a cliff with a running horizontal leap, as shown in the figure below. What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 {m} wide and 9.00
asked by mely 
Chemistry
A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 20°C and 42% relative humidity (that is, the water vapor in the air is 0.42 of the equilibrium vapor pressure at 20°C). The bottle is brought outside and stored at 0.0°C. (See
asked by Ashley 
math
A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective?
asked by Jeff 
Pre Calc
Dr. Black is standing 15 feet away from the street lamp. The lamp is making his shadow 8 feet long. The angle of elevation from the tip of the shadow to the tip of the streetlamp is 50 degrees. How tall is the streetlamp?
asked by Anonymous 
physics
A meterstick is held vertically above your hand, with the lower end between your thumb and first finger. On seeing the meter stick released, you grab it with those two fingers. You can calculate your reaction time from the distance the meterstick falls,
asked by andrea 
Physics
A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.
asked by sagara 
Chemistry
10. Cyclopropane is an anesthetic that is 85.6% carbon and 14.37% hydrogen by mass. What is the molecular formula of the compound if 0.45 L of cyclopropane reacts with excess oxygen at 120. °C and 0.72 atm to form a 1.35L of carbon dioxide and 1.35 L of
asked by Cherie 
Chemistry
1. Write balanced equations for each of the following processes. a. Chromium 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine131, used to treat hyperactive thyroid glands, decays by
asked by Sharon 
physics
A child operating a radiocontrolled model car on a dock accidentally steers it off the edge. The car's displacement 1.0 s after leaving the dock has a magnitude of 12.8 m. What is the car's speed at the instant it drives off the edge of the dock?
asked by MS 
math
How to solve this??? The attendance at the game on two successive nights of Oakland A's baseball was 77,000. The attendance on Thursday's game was 7000 more than two thirds of the attendance at Friday nights game. How many people attended the baseball game
asked by Sean charles 
please please help
Nico is saving money for his college education. He invest some money at 8%, and $1300 less than that amount at 5%. the investments produced a total of $234 intrest in 1 yr.How much did he invest at each rate?
asked by Tristan 
Literature
what is the author's purpose in "The Sniper?
asked by Michaela 
statistics
The numbers of hours of life of a torch battery is normally distributed with a mean of 150 hours and standard deviation of 12 hours. In a quality control test, two batteries are chosen at random from a batch. If both batteries have a life less than 120
asked by Anonymous 
STUDY UNIT: THE PRINTED WORD
Which one of the following items would be most likely to have a list of chapter titles? A. A magazine B. A novel C. A newspaper D. An article
asked by shamso 
Algebra
A coffee manufacturer wants to market a new blend of coffee that will sell for $3.90 per pound by mixing two coffees that sell for $2.75 per pound and $5 per pound, respectively. What amounts of each coffee should be blended to obtain 100 pounds of the
asked by Megan Brown 
physics
(a) Assuming that each cubic centimeter of water has a mass of exactly 1 g, find the mass of 3.76 cubic meter of water in kg. (b) Suppose that it takes 10.4 hours to drain a container of 59.1 m^3 of water. What is the “mass flow rate,” in kg/s, of
asked by sagara 
Statistics
9. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific
asked by Tab 
Math
The highest dive in the Olympic Games is from a 10meter platform. The height "h" is in meters of a diver "t" seconds after leaving the platform can be estimated by the equation, h=10+4.9t4.9t^2 I don't know how to make a successful table for this. I
asked by Conder 
physics
A 55.0kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?
asked by ravyn 
physics
Gold, which has a density of 19.32 g/cm^3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 6.710 g, is pressed into a leaf of 1.661 μm thickness, what is the area (in
asked by sagara 
Chemistry
If 57j of heat are added to an aluminum can with a mass of 17.1g, what is its temperature change?
asked by Anonymous 
PreAlgebra
solve for m 2/3m  5 = n
asked by Justin 
physics
A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?
asked by mely 
chemistry
suppose you have two 1L flasks one containing N2 at STP the other containg CH4 at STP how do these systems compare with respect to a)number of molecules B)density c)average kinetic energy of the molecules d)rate of effusion through a pinhole leak?
asked by meg 
Physics Help!
A 2.2 kg mass is attached to a spring with a force constant of 560 N/m on a smooth horizontal surface. The mass is pulled to one side, released, and allowed to oscillate back and forth. (a) find the maximum compression and expansion of the spring if the
asked by Erica L 
physics
A bottle with a volume of 180 U. S. fluid gallons is filled at the rate of 1.6 g/min. (Water has a density of 1000 kg/m^3, and 1 U.S. fluid gallon = 231 in.^3.) In years, how long does the filling take?
asked by sagara 
Statistics
7. A random sample of n1 = 16 communities in western Kansas gave the following rates of hay fever per 1000 population for people under 25 years of age. 121 115 124 99 134 121 110 116 113 96 116 116 135 96 96 116 A random sample of n2 = 14 communities in
asked by Tab 
math
In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for $24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?
asked by Anonymous 
physics
A major leaguer hits a baseball so that it leaves the bat at a speed of 31.5 and at an angle of 36.1above the horizontal. You can ignore air resistance. At what two times is the baseball at a height of 8.00 above the point at which it left the bat?
asked by John 
ut
The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a facecentered cubic lattice.
asked by trey 
physics
A new "D" battery has an emf of 1.5 V. When a wire of negligible resistance is connected between the terminals of the battery, a current of 25 A is produced. Find the internal resistance of the battery. ________ Ω
asked by ali1 
Math Help Please
Nico is saving money for his college education. He invest some money at 8%, and $1300 less than that amount at 5%. the investments produced a total of $234 intrest in 1 yr.How much did he invest at each rate?
asked by Tristan 
MATH
Two planes leave an airport at the same time, one flying east, the other flying west.The eastbound plane travels 100 mph slower. They are 3040mi apart after 4hrs. find the speed of each plane
asked by PLEASE HELP!!! 
law
How does the United States deal with problems related to civil order control?
asked by mee 
physics
A severe thunderstorm dumped 2.0 in of rain in 30 min on a town of area 50 km^2. What mass of water (in kg) fell on the town? One cubic meter of water has a mass of 103 kg.
asked by sagara 
physics
The nine Ring Wraiths want to fly from BaradDur to Rivendell. Rivendell is directly north of BaradDur. The Dark Tower reports that the wind is coming from the west at 52 miles per hour. In order to travel in a straight line, the Ring Wraiths decide to
asked by Chip 
Statistics
5. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of
asked by Tab 
Statistics
6. Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first nonzero digit disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of
asked by Tab 
Math
Please help me with this problem. In 1626,Peter Minuit of the Dutch West India Company purchased Manhattan Island from Native Americans for $24. Assuming an exponential rate of inflation of 6% per year,how much will Manhattan be worth in 2010?
asked by Anonymous 
Physics
0.490 mol of argon gas is admitted to an evacuated 50.0 cm^3 container at 60.0 C. The gas then undergoes an isochoric heating to a temperature of 400 C. What is the pressure?
asked by Joe 
math
7, 49, 343, 2401 Write an algebraic expression that will represent the nth term of the sequence.
asked by Isha 
Social Psychology
Describe the reciprocal relationship between behavior and attitudes?
asked by Toni 
physics
A 200mwide river flows due east at a uniform speed of 4.9 m/s. A boat with a speed of 9.0 m/s relative to the water leaves the south bank pointed in a direction 33o west of north. What is the (a) magnitude and (b) direction of the boat's velocity
asked by jr 
physics
A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?
asked by andrea 
science
how is water purified in the water cycle? why is the sun so important in the water cycle? what role does evaporation play in the water cycle? thanks!!!! :)
asked by Bri 
Algebra
The purity of gold is measured in karats. Twentyfour karat gold is pure gold and k karat gold is k/24 gold by mass. One piece of 16karat gold jewelry has a mass of 30 grams and another piece of 10karat gold jewelry has a mass of 40 grams. Find the
asked by Laur 
Math
Solve for w V= lwh
asked by PLEASE HELP 
physics
Water leaves the fireman's hose at rate of 7.2 kg/s and with a velocity of 21 m/s. Calculate the force exerted by the water jet on the wall of a building.
asked by Vanessa 
math
A manufacturer of light bulbs knows that 3% of the production of their 60W bulbs will be defective. What is the probability that exactly 5 bulbs in a carton of 144 will ne defective? Did not understand the posted answer before, need it simplified.
asked by Jeff 
Statistics
8. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific
asked by Tab 
Statistics
10. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and
asked by Tab 
math
On July 1, 1996, Anna invested $2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.
asked by Emily 
Reading APE
How does the author's attitude toward her name change over the course of "Newcomers in a Troubled Land"? Support your answer with evidence from the selection.
asked by Fartun 
physics
At some instant the velocity components of an electron moving between two charged parallel plates are vx = 1.5 × 105 m/s and vy = 3.0 × 103 m/s. Suppose the electric field between the plates is given by In unitvector notation, what are (a) the
asked by trisha 
Math
The total number of DVD videos produced and shipped in 1998 was .5 million. In 2004,the total number of units reached 29.01 million. Assuming the exponential model applies: a)Find the value of k and write the function b) Estimate the number of DVD videos
asked by Anonymous 
Algebra
What is the probability that a randomly selected threedigit number is divisible by 5? Express answer as a common fraction.
asked by Jay 
math
fifteen out of 25 students in Mrs. Smith's class are boys. what is the ratio of boys to girls? i put 1 to 6. is that right?
asked by kamal 
Math
A class has 12 students. In how many different ways can the students be put into lab groups consisting of 3 students in each group. The answer in the book is 369600. But I do not understand how they got this answer.
asked by KC 
Math
Lois invests $650 every 6 months at 4.6%/a compounded semiannually for 25 years. How much interest will she earn after the 25th year?
asked by Emily 
Algebra 1
Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?
asked by Ann 
Algebra
You have a piggy bank containing a total of 85 coins in dimes and quarters. If the piggy bank contain $14.50, how many dimes are there in the piggy bank? Interest=principal multiply Rate multiply 1, or interest=principal multiply rate.
asked by Megan Brown 
physics
Figure shows an overhead view of a 0.026 kg lemon half and two of the three horizontal forces that act on it as it is on a frictionless table. Force F1 has a magnitude of 4 N and is at ¥è1 = 27¢ª. Force F2 has a magnitude of 6 N and is at ¥è2 =
asked by jr 
Math
Cliff has some money he wants to invest for his retirement. He is offered two options: 10%/a simple interest or 5%/a compounded annually. Under what conditions should he choose the first option
asked by Emily 
math
how many pieces of ribbon each 4.5 cm long can be cut from alength of 4 and a half metres?
asked by elise 
physics
The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).
asked by Megan Fox 
physics
A 1.90kg object is attached to a spring and placed on frictionless, horizontal surface. A horizontal force of 14.0 N is required to hold the object at rest when it is pulled 0.200 m from its equilibrium position (the origin of the x axis). The object is
asked by Roo Kun 
physics
A 59.0Ω resistor is connected in parallel with a 116.0Ω resistor. This parallel group is connected in series with a 15.0Ω resistor. The total combination is connected across a 15.0V battery. (a) Find the current in the 116.0Ω resistor. _______ A
asked by ali1 
physics
The speed of light in a certain material is 1.6 × 108 m/s. Express the speed of light in (a) feet per nanosecond (ft/ns) and (b) millimeters per picosecond (mm/ps).
asked by sagara 
algebra
what is the percent of change from $48.50 to $38.80
asked by Julie 
Physics
An organ pipe open at both ends has a harmonic with a frequency of 480 Hz. The next higher harmonic in the pipe has a frequency of 540 Hz. Calculate the frequency of the fundamental and the length of the pipe. I know 540/480 is 9/8. I have no idea where to
asked by Rachel 
Chemistry
is fumaric acid polar or nonpolar?
asked by Nina 
physics
Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?
asked by ravyn 
Physics help
a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string
asked by Erica L 
Physics
a pendulum bob with a mass of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string
asked by Erica L 
chemistry
If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?
asked by Twynna Andrews 
chemistry
What are the number of atoms of nitrogen in 10g of N2H4?
asked by james 
pennfoster edu.
an overgarment worn with, and slightly shorter than, a straight skirt is called a?
asked by Danielle 
physics
A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final
asked by maria 
Precalc
how to solve for x: 500e^(0.3x) = 600 Steps please.
asked by Amy 
math
Could you divide 14 shirts into two equal groups? why or why not
asked by mick 
chemistry
How many grams of each substance are needed to prepare th e following solutions? 50.0 ml of 8.0%(w/v)KCL
asked by Linn 
Algebra
Two trans leave Chicago going opposite directions, one going north and the other going south. The northbound train is traveling 12 mph slower than the southbound train. After 4 hours the trains are 528 miles apart. Find the speed of each train. I would
asked by Megan Brown 
physics
An 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless pulley to a 66 kg sandbag. With what speed does the man hit the ground if he started from rest?
asked by jr 
Urgent!!! Physics
A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.60 km, 1.25 km), and 1.12 s later its has moved to point B with coordinates (6.16 km, 0.900 km). A. Find the x component of its average velocity between A and
asked by andrea 
physics HELP
A 7450 kg satellite has an elliptical orbit, as in Figure 6.9b. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the
asked by maria 
physics
MultipleConcept Example 9 discusses the physics principles used in this problem. Three resistors, 2.2, 3.9, and 6.4 Ω, are connected in series across a 24V battery. Find the power delivered to each resistor. resistance (Ω) power (W) 2.2 ______ 3.9
asked by ali1 
physics
The Pacific Crest Trail runs from the Mexican border to the Canadian border through California, Oregon, and Washington,covering 2650 miles of trail, but only about 1000 straightline miles. B).If you hike this trail in 14.0 weeks, from Mexico to
asked by mely 
Statistics
4. Let X be a random variable representing dividend yield of Australian bank stocks. We may assume that x has a normal distribution with A random sample of 19 Australian bank stocks has a sample mean of For the entire Australian stock market, the mean
asked by Tab 
spanish
vas a la clase de ingles en la manana o en la tarde?
asked by Anonymous 
economics
. Suppose you are a stock market analyst specializing in the stocks of theme parks, and you are examining Disneyland’s stock. The Wall Street Journal reports that tourism has slowed down in the United States. At Six Flags Magic Mountain in Valencia,
asked by annie 
Business Computer Information Systems
When you proofread look for punctuation, spelling and Capitalization Mistakes. is this punctuated correctly?
asked by yelena 
trigonometry. Math
In a triangle PQR, angle Q=50 degrees,PR=5CM, QR=4CM. find angle P?
asked by Melody 
ChemistryDrBob222
Arrows disappeared from below added them back to the equations. The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become after 2.50 minutes? (b)How long, in
asked by David 
algebra
British sterling silver is a coppersilver alloy that is 7.5% copper by weight. How many grams of pure copper and how many grams of British sterling silver should be used to prepare 170 grams of a coppersilver alloy that is 16% copper by weight?
asked by aaaa 
Geometry
Two of the sides of a triangular lot have lengths of 90 feet and 80 feet. If the angle opposite the 80foot side is 59°, what is the length of the third side of the lot to the nearest tenth of a foot?
asked by Dolores 
Chemistry 1200
Freezingpoint depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found
asked by Rukky 
physics help!!
A 5.50 104 kg space probe is traveling at a speed of 11000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 4.00 105 N over a distance of 2600 km. What is the final
asked by maria 
Physics
A hydrometer is an instrument for measuring the specific gravity of a liquid. For example, producers of maple syrup use the hydrometer to find how much sugar is in the collected sap. Markings along a stem are calibrated to indicate the specific gravity for
asked by MJ 
calculus
What is the average rate of change of y=4x^3 over the interval P(1, 4) and Q(5, 500)?
asked by evan 
math
niran has 72 centimeters of molding to make a frame for a print. this is not enough molding to frame the entire print.How shouldhe cut the molding to give the largest possible area for the print using the inside edge of the molding as the perimeter?
asked by maria 
trig
a plane is flying at an altitude of x with the distance at 800 meters with an angle of 70 degress. what equation would you use to solve. tan70= x/800 tan70= 800/x sin70= x/800
asked by tom 
math
how long will it take to earn 525$ in interest if $3500 is invested at a 6% annual interest rate?
asked by meghan 
physics
Mechanical energy is the difference between the kinetic and potential energies of an object true or false?
asked by ravyn 
math
On Monday afternoon, Andrew rowed his boat with current for 4.5 hours and covered 27 miles, stopping in the evening at a campground. On Tuesday morning he returned to his starting point against the current in 6.75 hours. Find the speed of the current and
asked by Sean charles 
Social Studies
The First Amendment does not guarantee absolute freedoms or rights Why?
asked by Britt 
Physics
A man with mass m =96.4 kg (weight = 212.1 lbs is walking towards a patio at 2.00 m/s (4.47 mph) when, at the last moment, he realizes the sliding glass door is closed. He puts out his hand suddenly to stop himself, and comes to a halt in 90.0ms. Find the
asked by Megan 
physics
Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?
asked by ravyn 
physics
Suppose all of the apples have a mass of 0.10 kg. If one of the apples in the bowl (C) is 1.0 meter above the ground, what is its potential energy?
asked by ravyn 
ChemistryDrBob222
Arrows disappeared from below added them back to the equations. ??(a) I don't understand ln(No/N)=akt The decomposition of IBr(g)into I2 (g) and Br2 (g) is first order in IBr with k = 0.00255/sec. (a)Starting with [IBr] = 1.50M, what will [IBr] become
asked by David 
math
a paint color is made by mixing red and yellow paint. the ratio of red to yellow is 4 to 9. how many quarts of yellow paint must be used for 12 quarts of red? explain how you find your answer.
asked by kamal 
trigonometry plz explain.
Which way is done correctly and why ?? Express the following in degrees,minutes, and seconds: (1)4 > (180/pi)*4 = 229.18312 229.18312 = 229 + (0.18312*60) = 229 degrees + 10.9872' = 229 deg 10' + (0.9872*60)" = 229 deg 10' + 59.2" or (2)4*180/pi =
asked by Anon 
Math
For this problem, assume the balls in the box are numbered 1 through 8, and that an experiment consists of randomly selecting 2 balls one after another without replacement. What probability should be assigned to the event that at least one ball has an odd
asked by Amanda 
Algebra IIPlease check calcs
Could someone check this matrix calculation The first matrix dimension is 1 by 3 row 1 = 1 row 2 = 7 row 3 =3 Second matrix is 1 by 3 Row 1 column one =2 row 1 column two = 5 row one column three = 5 my calculation is that it would be the dimensions of 3
asked by Ray Scholz 
science
an electron is released into a uniform electric field of magnitude 1.5 x 10^3 N/C. Calculate the acceleration of the electron, neglecting gravity. I know that if a charge is released in the electric field, it experiences a force and accelerates, gaining
asked by becka 
espaniolII
Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una buena dieta, va a hacer mas feliz también. Es tan difícil para mantener una vida saludable. Es esencial que no comas comida basura y hacer ejercicios todos los dias.
asked by bj 
Math
For the equation y = 6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = 6x, what is the slope and y intercept? Is 6 the y intercept or the slope? Because if it's
asked by Melanie 
Chemistry
Given the reaction system; 2 NO (g) + O2 (g) > 2 NO2 (g) Write a brief explanation for each of the following statements in terms of the collision model and/or reactions mechanisms. (1)Increasing the concentration of NO (g)makes the reaction go faster.
asked by Michael 
ALGEBRA
A cube has a volume of 64 cubic units. How many units are in the sum of the lengths of all it's edges?
asked by Sam 
Math
On July 1, 1996, Anna invested $2000 in an account that earned 6%/a compounded monthly. On July 1, 2001, she moved the total amount to a new account that paid 8%/a compounded quarterly. Determine the balance in her new account on January 1, 2008.
asked by Emily 
english
only five days later, the child itch rash had almost completely disappeared which word is the simple subject in the sentence above? a) five b) days c) Childs d) rash
asked by Anonymous 
geometry
Find the area of the smaller segment whose chord is 8" long in a circle with an 8" radius. (3.14) A=( pie  / )inches^2 please help me i don't understand this problem
asked by yelena 
Chem 1200
Freezingpoint depression can be used to determine the molecular mass of a compound. Suppose that 1.28 g of an unknown molecule were added to 19.9 g of water and the freezing point of the solution determined. If the new freezing point of water were found
asked by Rukky 
statistics
From past experience it is felt that the random variable, X, the age of a mother at the birth of her first child, is normally distributed with a mean of 21.3 and a variance of 16. Find the probability that a randomly selected mother: (a) has her first
asked by Tian 
geometry
When finding the perimeter of a figure on a grid,whydo you not count the spaces inside tha grid?
asked by melinda 
chemistry
What is the nuber of grams of oxygen present in 4.50 x 10^22 SO3 moleucles?
asked by james 
History
Describe an advantage of havinf federal judges appointed rather then elected
asked by Hannah 
MathAlgebra II
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of − 1.34? The only thing I know is that it represents a negative correlation. Please shed any light you can.
asked by Michelle 
Finance
If a firm had operating profits of 100,000 taxes of 17,000 interest expense of 34,000 and preferred dividends of 5,000. What was the firms net profit after taxes
asked by dee 
statistics
The owner of a bottling company is considering buying a new bottling machine. He has been testing two different machines that are being considered. After collecting 300 samples from each machine over several weeks, he was able to conduct a two sample z
asked by Anonymous 
physics
Airplane flight recorders must be able to survive catastrophic crashes. Therefore, they are typically encased in crashresistant steel or titanium boxes that are subjected to rigorous testing. One of the tests is an impact shock test, in which the box must
asked by John 
College English
Read the sentence below. Then, choose the correct combination of antecedents and pronouns. “The aliens may also implant tiny metal tracking devices in the bodies of these abductees so that they can locate them easily in the future.” A. They replaces
asked by Betty 
pythagrean theorem
A rectangle is 6m. wide and 11m long. How long is the diagonal of the rectangle?
asked by Destiny G. 
Algebra 1
Two sides of a triangle have the same length. The remaining side is one third as long as each of the other sides. If the perimeter of the triangle is 315 cm, what is the length of each side?
asked by Ann 
geometry
the lateral edge of side 12 makes an angle of 30 degrees with the base, what is the altitude of the square prism?
asked by Anonymous 
physics
A 7.9 kg object undergoes an acceleration of 2 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N.
asked by yo 
Algebra 1
A rectangular piece of art is 4 meters wide and 6 meters long. It is surrounded by a uniform sidewalk. If the area of the uniform sidewalk is 39 square meters, how wide is the sidewalk
asked by Elizabeth 
Chemistry
The vapor pressure of water at 25°C is 23.76 mm Hg. What would you calculate as the new vapor pressure of a solution made by adding 50.5 g of ethylene glycol (HOCH2CH2OH, antifreeze) to 50.5 g of water? You may assume that the vapor pressure of ethylene
asked by Rukky 
chemistry
How would you caculate this problem: What is the mass in grams of 150*10^12 iron atoms, each having a mass of 56 amu?
asked by Donna 
Statistics
3. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of
asked by Tab 
Drwls[SCIENCE]
Asthenosphere can act like a viscous liquid right? Is lithosphere part of the crust, or just part of the mantle? The core is the most solid part within the earth right? Pwaves can travel through all the layers, except for Swaves right? Also What really
asked by Anonymous 
physics
a ball is thrown at an original speed of 8.0 m/s at an angle of 35 degrees above the horizontal. What is the speed of the ball when it returns to the same horizontal level?
asked by Anonymous 
History
Briefly can you tell me, What social, political, and economic changes and advances occurred during the Roaring Twenties?
asked by Rena 
Math
Select three (3) coins, but assume that there are 4 dimes, 4 nickels, and 2 quarters. In how many possible ways can the selection be made so that the value of the coins is at least 25 cents?
asked by Amanda 
Espanol III
I am writing a composition for class and need someone to peer edit. No one around knows spanish so I am hoping someone here would be willing to look over it :) Thank you! Por primera, tú necesitas cambiar los hábitos. Si tú trabajas mucho para tener una
asked by Jason 
physics
A 55.0kg skydiver free falls for a period of time before opening his parachute. What is his kinetic energy when he reaches a velocity of 16.0 meters/second?
asked by ravyn 
Math
For the equation y = 6x, what is the slope and y intercept? The formula is y = mx + B. I know that m = the slope and B = the y intercept. So in the equation y = 6x, what is the slope and y intercept? Is 6 the y intercept or the slope? Because if it's
asked by Melanie 
math
sam earned $4,000 from his business. he gave 1/5 of it to his son and daughter in law as a gift. he invested 1/2 of the remaining amount. how much did he have left?
asked by sydney 
physics
an astronaut floating in space is separated from his ship. his mass in 85.0kg and he is 10.0m from ship. he throws a wrench moss is .8000kg opposite direction with a velocity of 20m/s. how long will it take him to reach the ship?
asked by ricki 
math
ivested $1,500 in the stock market on january 1, she lost 1/3 of it by the end of january and 2/5 of the remaininbg amount by the end of february. how nmuch did she have left?
asked by joan 
chemistry
What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???
asked by Brit 
Algebra 1
Write an equation of the line containing the given point paralled to the given line (8,6);2x=3y+4 Thank you
asked by Esther 
5th math
Jackie ran 4 Miles in 28.5 minutes Which equation could be used to determine the average number of minutes it took jackie to run Each mile(k)? k4=28.5 or k+3=28.5 or k/3=28.5 or 4k=28.5 can you tell me which one is the right equation?
asked by pat 
English 11
Type a character sketch of a fictional Southern Gentleman named Alphonzo Carteret, following the instructions given for the character sketch of the Puritan above.
asked by NEEDhELP 
chem
Using the values given, calculate the amount of heat that is liberated when a 2.7kg bucket of steam at 100.0°C is cooled to give a 2.7kg bucket of water at 28.0°C. (Condensing steam has −ÄvapH = −2440 J/g and cooling water has cliq = 4.184
asked by Rukky 
physics
In February 2004, Austrian physicists measured two events (having to do with the behavior of electrons) separated by the shortest time interval ever measured, 100 attoseconds. How far would light travel in this time interval? (1 attosecond = 10^{18}
asked by mely 
Biology!!
The lifespan of plants varies depending on genetics and survival strategies. Discuss the adaptive value of annual, biennial, and perennial life spans.
asked by NEEDS HELP!! 
Medical Information Management and Office Practice
Please check my answers. 1.Dr. Jones used an abbreviation that no one was familiar with. What can be done to prevent this from happening in the future? A. Ask the physician to take a course on medical abbreviations. B.Designate an approved abbreviations
asked by Nadya Crouch 
Math (Precal)
I can't seem to figure this out. A ship leaves at noon and travels due West at 20 knots. At 2:00 it changes to N54°W...Find the bearing and the distance FROM port at 3:00 pm. I've looked at this program for a while but can't figure it out.
asked by Dragon 
math
How could knowing that 35/7 equal 5 help you find 42/7 explain
asked by t 
math
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? This the ans 2 hours and 24 minutes but how did they work it out?
asked by Zac 
math
The masses of newborn children are normally distributed with a mean of 3.4 kg and a standard deviation of 0.8 kg. A newborn is at risk if the baby'd mass falls in the lowest 4%. These babies have a mass of less than ____?
asked by Sandy 
English IV
I'm have a hard time with this project. Based on the restoration and the 18th century, I have to write a prose satire aimed at changing the attitude of my audience. Please help!!!
asked by Charlotte T 
math
A can of lemonade concentrate has a capacity of 355 mL. The concentrate is mixed with 4 cans of water. a) how much lemonade is made? b) how many 200mL glasses can be poured?
asked by raluca 
spelling
i need sentns for join
asked by birksam 
Algebra 1
In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you for your help
asked by Esther 
physics
Water is poured into a container that has a leak. The mass m of the water is given as a function of time t by m = 4.8t^0.8  2.9t + 21, with t ≥ 0, m in grams, and t in seconds. (a) At what time is the water mass greatest, and (b) what is that greatest
asked by sagara 
Algebra 1
Find an equation of the line containing the given pair of points. (1/4,1/2) and (3/4,5). What is the equation of the line? y= Thank you for all your help.
asked by Esther 
chem
determine the osmotic pressure of the solution at STP. (Assume these solutions behave ideally.) a)0.116 mol fraction glucose (C6H12O6) in water (Assume the density of the solution is 1.02 g/mL.) b)0.0948 mol fraction NaCl in water (Assume the density of
asked by Rukky 
algebra
From her house, Mary travels to New York at an average rate of 50 miles per hour and then returns home at an average rate of 32 mph. After taking 2 hours longer on the return trip than the time it took her to get to New York,she finds that she still has 17
asked by Mia 
physics
Mechanical energy is the difference between the kinetic and potential energies of an object true or false?
asked by ravyn 
Algebra
Write an equation of the line containing the given point and paralled to the given line. Express your answer in the form ymx+b (4,7); x+ 3y=8. The equation of the line is y=? Thank you
asked by Esther 
Math
what is the next number with 2x2x2x2x2x5 as factorization
asked by Buttermanie 
Algebra 1
In 1920 the record for a certain race was 45.1 sec. In 1960, it was 44.3 sec. Let R(t)= the record in the race t= the number of years since 1920. Thank you so much
asked by Esther 
math
how do you find out the perimeter and the area of a parollelogram in a short cu way in a centimeter grid paper?
asked by Joe 
Physics
At liftoff, a rocket has a mass of 2x10^6 kg. It expels hot gas which provides an upthrust of 3x10^7. Find the initial accelerating of the rocket.
asked by Joey 
Chemistry
The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C){k(/s)}  lnk1/T 290 {2.52*10^5} ? ? 299 {5.25*10^5} ?  ? 330 {6.30*10^4} ? ? Complete the table above and,
asked by Paul 
math
2. Let X be a random variable representing the dividend yield of Australian bank stocks. We may assume that X has a normal distribution with Now, suppose we wish to test the null hypothesis that against the alternative that using a level of significance of
asked by Tab 
math
arraange the following numbers in order from least to greatest:2 1/4, 0.6, 2.75, 40%, 7/5
asked by kamal 
physics
how can i plan and design a lab to investigate how electric current causes contraction of a spiral wire spring
asked by tinamessi 
geometry
If a pentagon has a side of 140, how many inches is the rest of the side?
asked by Whitney 
4th grade math
of the third graders who were asked, 2/5 like pizza the best, 3/15 like hamburgers the best, and 18 like macaroni the best. How many third graders were asked their favorite food?
asked by michael 
space car
design a car for astronauts to drve in outer space
asked by alex 
UNO
A blood sample contains several different types of cells, each of which contains different combinations of specific ions and molecules. The cells are suspended in water, and the water also contains many molecules and ions. Which term or terms could be used
asked by henry 
Mathematics
37.8 degrees
asked by Melody 
Algebra 1
Write a equation of the line containing the given point and paralled to the given line (5,8);3x=5y+2
asked by Esther 
science
Does the mass of water increase when a plastic water bottle filled to the brim with water is frozen?
asked by Sandra 
Physics
Hello, I have e problems with dis question A harmonic wave on a string moves along the xaxis according to: (x,t) =5.0 (cm) sin[ (2.5m^1) x  (63s^1) t ] At x = 1.0 m when t = 2.2 s the speed of the oscilations on the string is closest to ... me thought
asked by Me 
physics
is a neon light a fluid?
asked by Juliet 
english
Christina and Christopher worked together and completed a project about astronomy.
asked by Anonymous 
socisl studies
name one cause of the french and indian wars name 2 results of the french and indian wars
asked by addison 
Physics
I have a rubber ball. Its diameter is 5.16 cm. Its density is 1.5 Mg/m^3. I need to find its weight in US units. I know to use w=pVg I am coming out with the wrong answer though. Can someone help?
asked by Morgan 
Math
A recipe calls for 4 1/2 cups of flour for 72 cookies. How many cups of flour would be needed for 48 cookies?
asked by Jenna 
Chemistry
The following data is collected for the decomposition of methy isonitrile at various tempertures: Temp.(C){k(/s)}  lnk1/T 290 {2.52*10^5} ? ? 299 {5.25*10^5} ?  ? 330 {6.30*10^4} ? ? Complete the table above and,
asked by Paul 
Physics
The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block
asked by Sarah 
chemistry
Before 1982 the US Mint cast penny coins from a copper and zinc mixture. If a 1980 penny weighs 3.051g and contains 0.153g zinc, what is the percent of copper in the coins?
asked by Twynna 
English
What is Protagonist in the sniper?
asked by Michaela 
algebra
8% of(n+2)equals 12. What is n?
asked by carol 
chemistry
What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl???
asked by Brit 
physics
what is the formula to calculate the following: how much force is needed to move a 10 pound block 10 feet in 8 seconds>
asked by steve 
5th math
What is the measure of each side of a square with a perimeter of 60 inches? this one I'm total lost . please ! show me how you do this problem. thank you!!
asked by pat 
Chemistry
After removing a crucible (containing CaCO3 obtained as a precipitate) from an oven, what could you do (if you were being extremely careful and had enough time) to prove that the CaCO3 is dry?
asked by Jason 
math
what number has 5 hundreds and 12 tens
asked by ann 
ALGEBRA/PLEASE HELP
have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (14t^2), and (12t). 14t^2=(1+2t)(12t) 1+2t = 1+2t 14t^2= (1+2t)(12t) 12t = 1  2t. The LCM for all numbers is 14t^2 = (1+2t)(12t) Thank you
asked by AMY 
religion 110
How might modern religion benefit from indigenous religious?
asked by allonda 
math
The question says .. match the equivalent addition and subtraction expressions a) 6 9 b)10  (12) c)69 d)1012 e)1210 A)10+(12) B)6+(9) C)12 + (10) D)6+(9) E)10+12
asked by Melissa 
math
The question says .. match the equivalent addition and subtraction expressions a) 6 9 b)10  (12) c)69 d)1012 e)1210 A)10+(12) B)6+(9) C)12 + (10) D)6+(9) E)10+12
asked by Melissa 
Math
Suppose f(n+1)/f(n)= n for all positive integers of n. If f (1)=1, find the numerical value of f(6). How do i figure out this?
asked by Ron 
Algebra II
What would make this statements False? The opposite of each natural number is a natural number. There is no whole number that has an opposite that is a whole number.
asked by April 
Precalc
how to solve 5(2^(3x)) = 8 Steps too please answer is ln 1.6 / 3 ln 2
asked by Amy 
Organic Chem
1. what is the monomeric unit of a chain of molecules joined by peptide bonds? Is the answer glycine? 2. Write the equation for the addition of hydrochloric acid to ethene. What is the name of the product formed? C2H4 + HCl > ??? Any help with any
asked by John 
science
You are designing a scale model of the solar system mercury it is 4,878 km in diameter.using the following scale factor, how large does your model of mercury need to be? A. 160cm B. 16cm C.146cm D.30cm
asked by walter 
English
I had duplicate bookings on Cebu Pacific air. com because of a problem on the Internet. I'd like to cancel one booking. How can I cancel one booking. Only one adult and a baby are going to get on the air plane. And please let me know how to pay the plane
asked by rfvv 
ELA
i need 5 sentences with simile metaphor personification and useing these spelling words studious zealous luxurious miraculous joyous
asked by Armontae 
math
Find the xintercept 3x5y=14y+9x I think y=0 but 3x=9x does not make sense to me. Please help me. Thank you.
asked by juan 
English
Are the following sentences possible? Thank you very much. 1) He shot me in the leg. 2) He showed me the way to the supermarket. 3) He likes shooting. 4) He shouted at him. 5) I always show my gift card to the checkout clerk so that I can get a discount
asked by Franco 
Algebra
Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem
asked by David 
chemistry
NaCL is composed of 39.3% Na and 0.7%. Calculate the mass of Na in 0.375gm salt.
asked by Twynna Andrews 
calculus
integrate x+5/(x^2+10x+26)
asked by Anonymous 
Economics
Explain the entities social regulation affects and how it affects them.
asked by Walker 
Algebra 1
write an equation of the line containing the given point and perpendicular to the given line (6,7);6x+=9 I am having a terrible time figuring out the last part. I would appreciate any help. Thank you.
asked by Esther 
math
7. If you can drive your car 540 miles on 26 2/3 gallons of gasoline, how many miles can you drive on one gallon?
asked by john 
Physics
Don't know how to calculate this, or the formula? A mono digital sound sample has a bit depth of 8 bits and a sampling rate of 9000 Hz. How much memory in bytes would it take to store 45 minutes of sound at this quality? Calculate your answer in bytes.
asked by Student in Need 
sociology
* How do you think life in the United States will change in the next 10 years? * How might the Internet be involved in the changes? * How do you think sociologists might use the Internet to study life in the United States? Name 3 specific ways.
asked by Anonymous 
Algebra 1
write an equation of the line containing the point and perpendicular to the given line (4,8); 2x+5y=4 I am having a very hard time, but I'm trying hard to study the steps for solving the problem. Profoundly, thank you.
asked by Esther 
Physics
A moving object has a kinetic energy of 146 J and a momentum of 23.4 kg·m/s. a) Find the speed of the object. Answer in units of m/s.
asked by Michael N. 
Maths
quelle longueur aura une toile a l'interieur d'une piscine si le diametre de la piscine est 5,5 m ?
asked by LoriAnne 
technology
what does Hard DiskFDD/HDD mean?
asked by kate 
cultural diversity
Is cooperative/competitive when a child prefers to help peers and subordinate his personal intrest to theinterest of the group
asked by Anonymous 
Math
solve for h A= 1/2(a +b)h I've tired over and over but still can't find the answer
asked by PLEASE HELP 
English
Can you please check these few sentences? Thank you. 1)I insert a 50cent coin into the trolley and I do my shopping. 2)I need to buy 200 grammes cooked ham and 150 grammes of raw ham. 3)Then I need to go to the counter of sliced meats and salami and then
asked by Franco 
us history
what issues did the compromise of 1850 leave unsettled
asked by chris 
physics
Is a lightning a fluid?
asked by Juliet 
Science/Nutrition
True or False? Resveratrol in red wine is an example of a phytochemical.
asked by SammieR 
math
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
asked by Zac 
Math
I need to find k for the probability distribution: P(x)=k(x+2) for x=1,2,3 I tried subbing in the xvalues, which gave me: P(1)=3k P(2)=4k P(3)=5k But I still have no idea what I need to do to find k. Guidance, please?
asked by Anonymous 
Math
Determine whether the function is periodic. State the period, the domain and the range of g(x)= 2 cos 2x+3 sin 5x
asked by Sierra 
Science
What are 5 facts about heat?
asked by Lewis 
Algebra
I am trying to solve (2*(c^4)*2*(a^6))/(2*(a^10)) but the answer I am getting is 2c^4a^4. Do you know if this is correct?
asked by David 
math
three out of 20 students have been to the zoo. what percent of students have been to the zoo? i put 6%. is that right?
asked by kamal 
french
Please help me by translating the following french terms into english: 1) le litchi 2)le bonbon 3)le ragout 4)l'epice 5)les accras 6)les matoutous 7)le blaff 8) le feroce 9)le lambi
asked by Gabrielle 
Chem
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
asked by Frank 
chemistry
what is the molarity of a solution when you ha 2mole of ammonium chloride (AgNo3) in 1L?
asked by Kim 
chemistry
What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???
asked by Kim 
chemistry
What is the number of grams of a solute for a 3L of a 2.5 M HCl solution???
asked by Kim 
History
Why is it important to learn about the government?
asked by Hannah 
Organic Chem (URGENT)
What is the monomeric unit of a chain of molecules joined by peptide bonds? Answer:?? If anyone can help with this question. Thank you very much.
asked by John 
chemistry
how many mL of watel should be added to yeild a soultion that has a concentration of .125 M when you start with a 250 mL soultion of 1 M AgNO3?
asked by nancy 
Algebra
Lee took a survey for the school newspaper and received the following data about the number of hours classmates studied per week: (1,2,4,5,6,8,9,10,10). Express as a common fraction the positive difference between tthe median and mean of this set of data.
asked by Tom 
algebra
If a pizza is 15.00 and the cost is 55.00 labor is 4.00 what is the equation to determine revenue?
asked by Sue 
social studies
what did the kings did for their peole nd what did they get in return
asked by gaby 
Algebra 1
Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks
asked by Esther 
7th grade math
what is te best numbers for the base of a trapezoid that has a aarea of 4 square units and a height of 1
asked by sam 
Algebra
Two angles of a triangle measure 55 degrees and 47 degrees. What is the number of degrees in the measure of the supplement of the remaining angle of the triangle?
asked by Laur 
math
verify that f and g are inverse functions. f(x) = 5x^2 x>(or equal too)0 g(x)= (x+2/5)^1/2
asked by Amanda 
pre algebramath
two fractions equivalent to the given factor: 1) 18/21 2)3/17 thank you so much if u helped me
asked by .please please please help 
Algebra
Can you help with the following equation? x2 x2  x(2)2x 2x+4  x(2)4x+4
asked by Tavia 
English 11
Type a short character sketch of a fictional Puritan named Justice Johnson based on what you have learned about the Puritans. Make certain that you describe how he dresses, how he lives, what he believes, how he spends his timein short, describe him so
asked by NEEDhELP 
ALGEBRA
I have the answer and would love confirmation. VERY APPRECIATED! Find the LCM OF (1+2t), (14t^2), and (12t). 14t^2=(1+2t)(12t) 1+2t = 1+2t 14t^2= (1+2t)(12t) 12t = 1  2t. The LCM for all numbers is 14t^2 = (1+2t)(12t) Thank you
asked by AMY 
English 11
What did the term grace mean to the Puritan and how did it shape his life?
asked by NEEDhELP 
math
a sum of 102,000 is to be split by 3 people, (1) gets 5 times as much as (2) which gets 2/5 as much as (3). how is this problem solved
asked by matt 
statistics
what is the percentage that 2 random people can be chosen from a total of 14 people.
asked by john 
Business
Hey guys. I really need your help picking out a new business name. Which do you like/find catchier??? The business is a local "swapping" online site. Thanks a lot. SwapEm Swap Ventures SwapEm Local
asked by Matt 
public relation
what has the result of what the artist Chris Brown led for the public to say or view him?
asked by kate 
5th grade
The Chang Toy Factory in China can produce 35 mini toy care each minutes at a cost of 77 cents. then, a package of 35 is put in a cardboard box that holds 350. What does it cost to procuces 285 toy cars? can you show me how to solve this problem .? do you
asked by pat 
statistics
what is average for the following numbers 65 49 24 15
asked by ash 
math
Ben can complete 3 math problems in 20 minutes. If he continues working at the same rate, how long will it take Ben to complete 15 math problems?
asked by Anonymous 
Chemistry
Determine the volume of concentrated HCL and the volume of water needed to produce 20mL of 6M HCL.
asked by Michelle 
L PreCal
Hey! I'm getting stuck on how to solve this system of linear equations. Can anyone show me step by step Thanks! 3x5y+5=1 5x2y+3z=0 7xy+3z=0
asked by Norah 
statistic
A business firm considers the number of years of formal education, X, a prime factor in screening applicants for employment in its plant. Assume from past experience that X ~ N (10.6, 2.5), where 10.6 is the mean and 2.5 is the standard deviation. (a) If
asked by Tian 
Human services
Where would I look for information on problems that infant daycare have. I know abuse and negalect are two major problems, but I need resources to back up the information that I know.
asked by Patiance 
math
write fraction as a decimal nine and four tenth
asked by Joshi 
Algebra 1
Write an equation of the line containing (6,9); x + 2y=9 the equation is y=? Thanks
asked by Esther 
math
How do I create a game with a 55percent chance of winning for Gr12 data management
asked by Lori 
calculus
Use the bisection method or a graphing calculator to find the coordinates of the two points on the graph of that lie r = 1 unit from the origin. Give the result to the nearest hundredth, I just need a direction to go on this problem
asked by David 
math
what is the anwser to 5 hundreds and 12 ten
asked by ann 
Algebra
Graph the equations y=2x5+2
asked by Rachal 
personal planning
what types of diseases can you get if you are unhealthy?
asked by katrina 
Math
You're reading My ones digit is 1 less than 4. My tens digit is the greatest number of tens that can be in a number. What number am I?
asked by Nicole 
Physics
a sled is capable of reaching speeds of 450 m/s in 1.82 s then stopped in 1.92 s what is the acceleration
asked by Jim 
Bio
What role does DNA play in helicase?
asked by Grant 
algbra
t = r + k/2(w) What does w equal?
asked by Lynn 
physics
An arrow is shot vertically upward and then 2.15 s later passes the top of a tree 37.0 m high. How much longer will the arrow travel upward, and how high will it go?
asked by Jamie 
math
one angle in a triangle is half the largest and three time the smallest what are the three angles
asked by larry 
physics
someone swings down pendulem and rescue the lady in distress by grabbing her. inelastic collision at the equallibrium point o fthe pendulem. his mass is 90kg her mass is 50kg. what is the masimum height of the oppsite legde that he and she would ba able to
asked by ricki 
chemistry
On a trip you travel 308km in 3.5h and use 32L of gasoline. A) What is your average speed in km per hour? B)What is your gas mileage in miles per gallon?
asked by Twynna 
physics
someone spinns with an angular velocity of 4.55rad/s with arms held out. his rotational inertia is 2.7kgm^2. whn the he pulls his arms in his angular velocity increases to 7.60rad/s. what is his rotary ek?
asked by ricki 
math
what equation will equal 12,345,678,987,654,321
asked by azenette 
spelling
Can I replace the word to with from in the following sentence: Laura often lost her homework on the way to school.
asked by William 
Maths,Science
(sinx)^8 + (cosx)^8=17/32
asked by Abhishek Mishra 
algebra2
how do you factor this? x(x3)+5(x3)
asked by janelle 
science
what is the volume of a 6.okg aluminum ball having a density of 2700 kg/m3?
asked by tony 
chemistry
In this activity, why should there be no individual atoms left over that were origionally part of a reactant molecule?
asked by Anonymous 
math
two fractions equivalent to the given factor 8/14
asked by vampy 
algebra2
how do you factor this? a4b + a5b + 3
asked by janelle 
factoring quadratic expression
w^2+2w+1
asked by stacy 
algebra
4x12= can someone tell me how to solve
asked by angiie 
math
how do i factor this y=x to the power of 2 2x5? thanks in advance!
asked by anonymas 
5th math
look at the number of leters robin sorted at her job at the post office. what is the mean number of letters sorted? dayletters sat. 105 Mon. 97 Tues. 88 Wed. 86 please! show me how to do this problem.thanks!!
asked by pat 
algebra
scientific notation 0.8775
asked by Anonymous 
Finite Math
Assume that you have a total of 15 people on the committee: 5 black males, 5 black females, 1 white male, and 4 white females. Party rules require that at least one black and at least one female hold one of the three offices. In how many ways can the
asked by Amanda 
Algebra 1
how do u find the slope of a line
asked by Courtney 
chem
Under what conditions does water boil at exactly 100 degrees Celsius?
asked by marie 
trigonometry??
Did I do this right???? Express the following in degrees,minutes, and seconds: a.4 > (180/pi)*4 = 229.18312 b.0.23 > (180/pi)*0.23 = 13.17803 c.pi(3.14159)/6 > (180/pi)*(pi*3.14156/6) = 94.24778 d.3*pi/2 > (180/pi)*(3pi/2) = 270 e.1.4 >
asked by Anon 
Area and Perimeter
Create a new floor plan with a master bedroom showing an area of 120 square feet and a perimeter of 44 feet
asked by Di'Aisha 
Science
Name the type of research for each of the following and rank them 15 (1 strongest, 5 weakest: 5 points). A. A researcher collects questionnaires from people who exercise and nonexercising people to determine whether there was a difference in physical
asked by SammieR 
math
how to add mixed fractions:17 2/3 23 1/4= ?
asked by Isaiah 
Math
In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to remove the last bean. If the initial pile has 29 beans, should you want to go first or second to guarantee a win?
asked by Diana 
analogies
an 8 letter analogy for man: woman:: carved
asked by teach2 
Algebra
Graph the equations y=2x5+2
asked by Valerie 
103 inf
What type of strategies can educators use to ensure their students are not “flaming”
asked by meshelle 
algebra2
how do you factor 48x3z5y  36x3z3y4 + 48x2z5y
asked by janelle 
English IV
Write a research paper about developments in society during the Romantic Era (17851832).
asked by Charlotte T 
algebra2
how do you factor 15Rx  3Rex
asked by janelle 
spelling analogys
broom: sweep :: brush:_______
asked by ele 
algebra
Please help me simplify this function? f(x)=4(x3)^3(x+1)^2
asked by Marie 
factoring quadratic expression
w^2+2w+1
asked by stacy 
Math
Solving First degree equations. 0.2x0.3=0.1x+5 I am having a hard time entering this into my TI84
asked by Lisa 
Physics I NEED HELP!!!
of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees
asked by Erica L 
algebra
scientific notation 0.8775
asked by Anonymous 
child day care
a child development is affected most by the
asked by brenda 
ctc
y=1777x+27153 x=7606
asked by ula 
maths
Hello I'm stuck on this question here it is x² + 3x  6.75 = 0 So what does x equal to ?
asked by Anonymous 
math
how do i find the slope of line AB if A`s coordinates are(4,3) and B`s coordinates are (2,1)
asked by :(plz help 
math
a rope is 120 ft long and the water is 20 ft deep. how far is the anchor from a point directly below the boat?
asked by lee 
penn foster
i'm typing my lab 2, case 8 radiology report and can't make out one word in the report. "carotery stick" it what it sounds like the lady is saying, but it doesn't make sense and I can't find it in any dictionary. help
asked by jojo 
math
did not understand your answer?
asked by Jeff 
math
What is the answer to 12+r=11
asked by Jason 
Math
if 6 bugs are in a cage and you take away 70 but you need to divide that by 3, how many bugs would be left?
asked by Sarah 
algebra
standardformofquadratic
asked by Anonymous 
Science
How did living organisms shape our current atmosphere? How did free oxygen eventually begin to accumulate in the atmosphere? What was the role of photosynthesis.
asked by Robin 
algebra2
how do you factor this completely? 105x6y2z3  98x4y3z2 + 84x3y4z5
asked by janelle 
US History
What role did religion play in early European efforts at overseas colonizations?
asked by korrissa 
writing
can you unscramble eratyleh
asked by s.matt 
science
what is alkaline solution?
asked by amna 
algebra2
what is the missing variable? 3a^2bx(?)=6a^2b^2x
asked by janelle 
prealgebramath
two fractions equivalent to the given factor 18/21 and the other 3/27:) please helpp
asked by PLEASE HELP :) 
Physics I NEED HELP!!!
of 0.13 kg is attached to a string with a length of 0.95 m. we choose the potential energy to be zero when the string makes an angle of 90 degrees with the vertical. (a) find the potential energy of this system when the string makes an angle of 45 degrees
asked by Erica L 
ctc
3r2s=11 2r+3s=29
asked by ula 
math
convert 94/10 into a decimal?
asked by Joshi 
algebra2
how can you factor this? x2 + 25
asked by janelle 
Math
sole for the variable s r=2s  8
asked by Justin 
math
g(x) = 2/(4x+5)
asked by alex