Questions Asked on
April 18, 2011

spanish
Using the subject “usted” and the verb in the imperative, tell your instructor three things she or he must do. Then tell your instructor two things she or he must not do. You will be graded on accuracy and pronunciation. Provide your sentences in
asked by Anna 
Spanish
A mis amigos 1.___ mucho la comida de la cafetería. A Esmeralda 2.___ las papas fritas y los refrescos. A Rodrigo 3.___ más la fruta. A mí 4.___ los sándwiches y la leche. Pero a todos nosotros 5.___ mucho el yogur. Y a ti, ¿qué 6.___ ?
asked by Aleesha 
Physics
A ray of light of frequency is 5.09 x 10^14 Hz is traveling from water to medium X. The angle of incidence in water is 45 degrees and the angle of refraction in Medium X is 29 degrees. Calculate the index of refraction
asked by Jeshondria 
Calc 2
Find a Cartesian equation for the polar curve y = 5tan(theta)sec(theta). I think I got it but I just wanted to double check. Thanks in advance!
asked by Paige 
geometry
In the diagram below of isosceles trapezoid DEFG, DE ll GF. DE = 4x − 2, EF = 3x + 2, FG = 5x − 3, and GD = 2x + 5. Find the value of x. the answer is 3 but idk how, please help
asked by Jessica 
Spanish
What do the following people like? Write the correct form of the verb gustar in each sentence. 1. A mí la cena que prepara Sebastián. 2. A Patricia las hamburguesas, las papas fritas y los refrescos. 3. A nosotras la comida nutritiva. 4. A ustedes las
asked by Cierrah 
Calc
At the time of the birth of a child, a parent wants to begin a college fund that will grow to $50000 by the child's 18th birthday. Interest is compounded continuously at 8.5%. What should the initial investment (P0) be?
asked by Anonymous 
Physics
1) Part A: Two pellets, each with a charge of 3 × 10−6 C, are located 0.03 m apart. What is the electric force between them? The value of the Coulomb constant is 8.99 × 109 N · m2/C2 and the universal gravitational constant is 6.67259 × 10−11 m3/kg
asked by Anonymous 
physics
An FM radio station broadcasts its signal at a frequency of 9.15 ×107 hertz. Determine the wavelength of the signal in air. Round your answer to the nearest hundredth of a meter.
asked by ashley  
chemisrty
what is the balance equation of CH3COOH(aq)+NH3(aq)
asked by yr 
Chemistry
Calculate [OH] and pH for the following strong base solution: 10.0 mL of 0.0105 M Ca(OH)2 diluted to 500.0 mL
asked by Kendall 
Thermochemistry
The enthalpy formation of ethanol, C2H5OH, is 277.0 kJ/mol @ 298.15 K. Calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2(g) & H2O (l).
asked by Morgan 
math
Name the lengths of the sides of three rectangles that have perimeters of 14 units.
asked by leslie 
Chemistry
If you were to prepare a 1.00 molal solution of CaCl2 beginning with water at 27.0 C, what would the final temperature of the solution be (in C)? Assume that the specific heats of both pure H2O and the solution are the same, 4.18 J/K*g. The dissolution of
asked by Bob 
Spanish
What do the following people like? Write the correct form of the verb gustar in each sentence. 1. A mí la cena que prepara Sebastián. 2. A Patricia las hamburguesas, las papas fritas y los refrescos. 3. A nosotras la comida nutritiva. 4. A ustedes las
asked by Cierrah 
Geometry
The lateral area of a regular pyramid is 300 square units. The perimeter of its base is 100 units. Find the slant height of the pyramid. my answer is 5 units is this correct?
asked by mary 
chem
the root mean square speed of a certain gaseous oxide is 493 m/s at 20 C. what is the molecular formula of the compound. how is the answer NO???
asked by CHEMCHEM 
English
Need to underline the noun or pronoun and circle the word that modifies it.... 1. Countless pioneers crossed this vast continent. Noun=pioneers Adj=countless, Noun=continent Adj=this,vast 2. Some people wanted rich, productive farmland. Noun=people
asked by Ann 
science
How many grams of glucose (180g/mole) would be needed to make 100ml of a 1.5 M solution?
asked by matt 
math
Please can you me What a linear inequality describes the graph of a dashed line passing through (0,3) and (6,0) with the space beneath the graph shaded?
asked by sateko 
physics
A sphere of mass M is supported by a string that passes over a pulley at the end of a horizontal rod of length L. The string makes an angle è with the rod. The fundamental frequency of the standing waves in the portion of the string above the rod is f.
asked by Anonymous 
science
How large a current would a very long, straight wire have to carry so that the magnetic field 2 cm from the wire is equal to 1 G (comparable to the earth’s northwardpointing magnetic field)?
asked by kamal 
physics
an electric motor lifts on elevator 9 m in 15s by exerting an upward force of 1.2 x 10^4 calculate the power
asked by jack 
Algebra
The tour de France is a bicycle race that begins in Ireland but is primarily a race through France. On each day, racers cover a certain distance depending on the steepness of the terrain. Suppose that one particulAr day the racers must comp,tee 210 mi. One
asked by Anonymous 
HELPPP
Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0
asked by Leah 
Chemistry
Calcium fluoride is the wellknown mineral fluorite. It is known that each unit cell contains four Ca2+ ions and eight F ions and that the Ca2+ are arranged in a facecentered cubic lattice. The F ions fill all the tetrahedral holes. The edge of the CaF2
asked by Jay 
physics
With the forces in equilibrium if a stationary climber is using a rope which is 60 degrees to the vertical, the rock face is at 30 degrees to the vertical, and the weight of the climber in cluding equipment is 850N. What is the tension on the rope? What is
asked by Declan 
physics
a very bright source of red light has much more energy than a dim source of blue light, but the red light has no effect in ejecting electrons from a certain photosensitive surface. why is this so?
asked by myles 
math
. Find the volume of the sphere with a radius of 9. Use ð = 3.14 and round your answer to the nearest tenth. 4. Find the volume of an ellipsoid with a semimajor axis of length 10 and the first semiminor axis has length of 6 while the second semiminor
asked by BreAnna 
algerba 1
From the top of a lighthouse 210 feet high, the angle of depression to a boat is 27. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level. Help me!
asked by Maram 
Math
An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
asked by Barnie 
caprock
Hachure lines, or lines with teeth, describe
asked by cassie 
math
Richard is flying a kite. The kite string makes an angle of 57 degress with the ground. If Richard is standing 100 feet from the point on the ground direcly below the kite, find the length of the kite string.. Please help!!!
asked by ashely 
statistics
) Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an advance indication of an illness such as gout, leukemia, or lymphoma. Over a period of months, an adult male patient has taken eight blood tests for uric acid.
asked by John 
chemistry
At room temperature, 20° C, water (H2O) is a liquid and oxygen (O2) is a gas. Based on kinetic molecular theory, which answer best explains the states of the two fluids?
asked by Melanie 
chemistry
Is there a relationship between HOMO & LUMO and bonding & antibonding? Explain.
asked by J 
geometry
Find the surface area of a rectangular prism with a length of 8 inches, a width of 5 inches and a height of 2 inches. so far this is what I have (2(8)+2(5))2=72 + 2(8.5)=80 my answer is 152in^2 the books answer is 132in^2 What did I do wrong???? Thanks
asked by mary 
Business Mathematics
During the 2011 student's orientation at Unam, it was reported that number of male students who attended the orientation was nine hundred and forty less than four times the number of female students. a) From the statement above, formulate a mathematical
asked by Ally 
geometry
I have a circle with a radius of 20in. Arc mEGF = 235(not shaded part of circle) find the area of arc EF (shaded sector of circle). My answer was 82.3 in^2 correct answer is 436.3 in^2 I need disrection on this one I was really off on my answer.
asked by mary 
chemistry
Ammonia, NH3, for fertilixer is made by causing hydrogen and nitrogen to react at high temperature and pressure. How many moles of ammonia can be made from 0.15 moles of nitrogen gas?
asked by chelsea 
Managerial Economics
As vice president of sales for a rapidly growing company, you are grappling with the question of expanding the size of your direct sales force (from its current level of 60 national sales people) You are considering hiring from 5 to 10 additional
asked by Rico 
Physics
A charge of 0.25 C moved from a position where the electric potential is 20 V to a position where the potential is 50 V. What is the change in potential energy?
asked by Mikie 
Probability/Statistics
A secretary addresses 50 different letters and envelopes to 50 different people, but the letters are randomly mixed before being put into envelopes. What is the probability that at least one letter gets into the correct envelope?
asked by Lisa 
Math
In a shipment of 1000 light bulbs 1/40 of the bulbds were defective. What is the ratiio of defective bulbs to nondefective bulbs?
asked by ashely 
physics
A DVD is spinning at 180 rpm’s. Calculate its angular acceleration when it increases to 240 rpms’s in 2 seconds. (Remember, convert rpm’s to radians/second)
asked by amy 
Physics
Orange light (wavelength=600nm) is passes through a single slit. Use a=2000nm and L=2m. a) Determine the linear size on the screen of the 2nd maximum (not including the central maximum). b) Determine how many total maxima occur in the pattern. a) I thought
asked by Chelsea 
Physics
Orange light (wavelength=600nm) is passes through a single slit. Use a=2000nm and L=2m. a) Determine the linear size on the screen of the 2nd maximum (not including the central maximum). b) Determine how many total maxima occur in the pattern. a) I thought
asked by Chelsea 
chem
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of
asked by CHEMCHEM 
object oriented programming
We want to define a class clockType, to implement the time of day in a program. The time is represented as a set of three integers: one to represent the hours, one to represent the minutes, and one to represent the seconds. We also want to perform the
asked by sara 
english
CAB : VEHICLE :: wasp :
asked by Anonymous 
physics
1)найти среднюю длину свободного пробега молекулы кислорода при нормальном давлении, если коэффицент диффузии кислорода при том же
asked by lisa 
Math
1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute
asked by ashely 
Physics
An escalator in a department store is driven by a large electric motor whose power consumption changes with the load to keep the escalator moving at a constance velocity, up to a certain maximum power capacity. An escalator working at 0.22 of its maximum
asked by micky 
american history
"All powers not delegated to the United States by the Constitution . . . are reserved to the States respectively, or to the people." This language, drafted by _______ and incorporated into the _______ Amendment of the Bill of Rights was intended to address
asked by Anonymous 
Chemistry
how many grams of solid KOH is needed to neutralize 1.00 L of 0.250 M HNO3 solution?
asked by Helena 
stastics
Following are the speeds of 40 cars clocked by radar on a particular road in a 35mph zone on a particular afternoon: 30, 36, 42, 36, 30, 52, 36, 34, 36, 33, 30, 32, 35, 32, 37, 34, 36, 31, 35, 20, 24, 46, 23, 31, 32, 45, 34, 37, 28, 40, 34, 38, 40, 52,
asked by tonya 
Command Economies
Could I know the features of Command Economies/good and bad? I think I found their relative advantages and disadvantages. Down below. Please check, and do tell me if there are more. Thanks so much. Command Economy Advantages: Equality is focused on
asked by Anonymous 
chem
A sample of O2 gas was collected over water at 23ºC and 711 torr. What is the partial pressure of the O2? (The vapor pressure of water at 23ºC is 21.2 torr.) Partial pressure of O2:_____torr
asked by jan 
Economics
explain how the wage can adjust to balance the supply and demand for labor while simultaneously equaling the value of the marginal product of labor
asked by gdlola 
Math
I have three more questions I do not understand. 1. Two points (1,1) and (3,2) are graphed on a coordinate plane. What is the shortest distance between the points? A. 3 B. 4 C. 5 D. 7 I have no idea how to do this. 2. Which expression represents the nth
asked by Sammy 
life orientation
in 1015 lines critically discuss 5 ways in which the human or environmental problem impacts on the community
asked by Tania 
Math
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level.
asked by Barnie 
Chemistry Help!
The nitrogentohydrogen single bond energy is 389 kJ/mol in NH3. What is the minimum frequency of radiation having the necessary energy to break this bond?
asked by Kamila 
Math
Which statement is correct? A. All intergers are rational numbers. B. All irrational numbers are whole numbers. C. A real number must be a rational number. D. A repeating decimal is an irrational number I think it's either A or C.
asked by Sammy 
algebra
the mass of mars is about 6.421x10^2 metric tons. The mass of the sun is about 1.998x10^27 metric tons. About how many times the mass of mars is the mass of the sun? Give your answer in scientific notation. I came up with 1 where do I keep going wrong?
asked by bianca sorry 
physics
Using trigonometry A patients leg is raised at an angle of 45 degrees and a traction force of 50N is applied in line with the leg; Find the vertical component of this force? Find the horizontal component of this force?
asked by Declan 
College Algebra
The length of a rectangle is 3 times the width . If the perimeter is to be at least 48 meters, what are the possible values for the width? (If the perimeter is at least 48 meters, then it is greater than or equal to 48 meters.) Enter the expression for the
asked by Nancy 
Math
The chart shows the number of cars sold per week at a car dealership during the month of June. Salesperson Week 1 Week 2 Week 3 Week 4 Tim 4 8 2 1 Geena 1 2 7 1 Rafael 2 1 5 4 Sonny 4 1 1 10 How should the data be displayed to make the most convincing
asked by Sammy 
Physics
The deceleration(negative acceleration) of an automobile in a full skid on the dr pavement is a little greater than one half "g" or half the acceleration you would experience in free fall. Suppose you are going down the high way and you suddenly decide you
asked by ron 
Math
A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
asked by ashely 
Spanish8thPlease check answers
1.¿Qué aprendas en la clase de español? Yo aprendo hablar y escribir en español. 2.¿Qué piensas hacer mañana? Pienso ir a una escuela. 3.¿Te gusta la escuela? Por qué? Sí, me gusta la escuela. Porque yo aprendo mucho en escuela y saco buenas
asked by Jordie 
math
Richard is flying a kite. The kite string makes an angle of 57 degress with the ground. If Richard is standing 100 feet from the point on the ground direcly below the kite, find the length of the kite string.. Please help!!!
asked by ashely 
differential equations
Search: A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine
asked by mike 
Geometry
Need help I missed this problem on my test. My answer was 31.8in^2. The right answer was 8.0in^2 How should I have worked the problem: A pie has a diameter of 9 inches. Each slice of the pie has a central angle of 45 degrees. What is the area of each slice
asked by mary 
Physics
An ice skater spins with her arms extended and then pulls her arms in and spins faster. Which statement is correct? A. Her kinetic energy of rotation increases because of the work she does to pull her arms in. B. Her kinetic energy of rotation does not
asked by Fernando 
calculus
find the point on the line 6x+7y5=0 closest to (2,2)
asked by Jane 
english
so i posted a question very similar to this yesturdya but i have now have a more spesific question. do you guys know any poems about or from the 1950's that talks abuot basic life..
asked by hannah 
Spanish Could someone please check my work? Thank
Mi primera clase que tengo es la orquesta. No es difícil pero el profesor es muy estricto. Mi segunda clase es el álgebra. Es difícil pero es muy importante. Mi tercera clase es la geografiá. Antes mi clase, tengo el almuerzo. Después del almuerzo,
asked by Mellie 
Chemistry
A valence election in an atom of sulfur is excited by heating a sample. The electron jumps from the s orbital to the p orbital. What is the electron configuration of the excited sulfur atom, and what would the orbital diagram look like?
asked by kamila 
statistics
Develop the estimated regression equation to predict the city score, given the Recession Resistance rating alone
asked by Jennifer 
Chemistry
Find the equation that describes the energy of a photon emitted as an electron relaxes from a higher energy level to a lower one in a hydrogen atom. 6 to 1 6 to 2 6 to 3 6 to 4 6 to 5 5 to 1 5 to 2 5 to 3 5 to 4 4 to 1
asked by Toni Jones 
Physics
The brakes on a parked car fall and it accelerates at a constant rate, rolling into a lamp post down the hill. the car reaches a velocity of 4.3m/s by the time it smashes into the lamp post. The time between the brakes failing and the smashing of the car
asked by ron 
Algebra II
find An if n = 2 of the arithmetic sequence with An = 14n  3 i'm lost can some one help
asked by anonymous 
Integrated Physics and Chemistry
Some refrigerants used in air conditioners have been associated with.. A)somg B)destruction of the ozone layer C)thermal pollution D)power failures
asked by Ashley 
physics
what is cross product or vector product plz explain it in detail.....
asked by mimi 
Algebra2/ Trig
During a baseball season, a company pledges a donation to a charity of $5000 plus $100 for every home run hit by the local team. Does it make more sense to represent this situation using a sequence or a series? Explain your reasoning.
asked by Naseeb 
Physics
A 2340 kg car traveling to the west at 20.7 m/s slows down uniformly under a force of 8340 N to the east. a) How much force would be required to cause the same acceleration on a car of mass 3180 kg? Answer in units of N. b) How far would the car move
asked by Anonymous 
Physics
Suppose that you want to take a photograph of yourself as you look at your image in a flat mirror 1.6 away. For what distance should the camera lens be focused?
asked by Lia 
math
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level.
asked by ashely 
math
An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
asked by ashely 
math
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level.
asked by ashely 
physics
The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
asked by Kristen 
Environmental Science
I have been studying for several hours and am having problems with finding the answer to this question. Can anyone help please? Conservationists argue that watershed protection and other ecological functions of forget are more economically valuable than
asked by Sandy 
Chemistry
You are in the silver recovery business. You receive 55‐gal drums of waste silver solution from photography laboratories, metal plating operations, and other industrial companies. Currently, you have a drum of waste from a silver‐plating factory with
asked by John 
Physics
A transformer has 3000 loops in its primary coil and 1500 loops in its secondary coil. What is the voltage in the secondary coil if the voltage in the primary coil is 120 V??? ***PLEASE explain how you get the answer*** thank you:)
asked by farhana 
Science
Write a mechanism for the Claisen reaction of ethyl ethanoate (ethyl acetate) to give ethyl acetoacetate?
asked by Jamie 
statitics
a light bulb manufacture gaurentees that the mean life of a certain type of bulb is at least 875 hours. A random sample of 40 light bulbs has a mean life of 863 hours with a standard deviation of 50. a=0.04
asked by jamie 
math
In how many ways can a committee of five people be selected from seven women and nine men if at least one woman must be in the committee?
asked by Fakaapo 
math
Ben has 15 puzzles and 27cds. When he takes a trip, he likes to bring one puzzle and one cd . How many trips can he take with a different puzzle and cd pair
asked by JORDAN 
Math
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level.
asked by ashely 
Capitalism
Hi. I would like to know what Capitalism is in simple terms. From Wikipedia, this is what it says: Capitalism is an economic system in which the means of production are privately owned and operated for profit. Could I get more information please.
asked by Anonymous 
math
What is the maximum value of [z = 8x + 7y] , subject to the conditions {2x + 4y >= 4, 2x + 3y = 0, y >= 0}
asked by sateko 
physics
What average force is required to stop an 1900 car in 6.0 if the car is traveling at 80 ?
asked by colleen 
Spanish8th please check for errors
¿Cómo se llama tu maestro de español? Mi maestra se llama es Señora Johnston. Mi maestra se llama es Maestra Johnston.
asked by Jordie 
Chemistry
A hydrogen atom electron in an excited state with n = 7 drops to a lower energy state with n = 3. What is the wavelength of the light emitted in this transition
asked by Kamila 
College Math
Lottery: One million tickets were sold for a lottery in which a single prize will be awarded. a)If you purchase a ticket, determine your odds against winning. b)If you purchase 10 tickets, determine your odds against winning.
asked by Brenda 
Intro to Physical Science
A car whose mass is 1000 kg is traveling at a constant speed of 10 m/s Neglecting any friction, how much force will the engine have to supply to keep going the same speed?
asked by Anonymous 
prep chem
How many milliliters of oxygen 2(g) will be produced at 720mmHg and 17 celsius if 0.460 grams of KClO3 are reacted in the reaction? Formula is 2 KClO3 > 2 KCl + 3 O2(g) I know to change temp into K
asked by Laura 
Calculus
Find any absolute max/min and local max/min for the function f(x)=x^34x+5 on the interval [0,5). Made sure to prove that these points are max/min values. This is what I did so far. f'(x)=3x^24=0 3x^2=4 x= 2/sqrt3 The 2/sqrt3 is outside of interval so
asked by Janet 
English
What is academic integrity?
asked by JoshelaT 
Math
If one leg of a right triangle is 8 inches long, and the other leg is 12 inches long. How many inches long is the triangles hypotenuse?
asked by ashely 
chemistry
describe the procedure you would follow and the information you would need to know to find the mass of a reactant in a chemical equation when you are given the mass of one product
asked by staci 
math
A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
asked by ashely 
chemistry
chlorine is a nonmetal, predict what will happen if you lower some burning sodium into a gas jar of chlorine. will there be a reaction? what product will be formed?
asked by Anonymous 
Physics
A cylinder of oxygen has a gauge pressure of 2000psi and a volume of 16L at 70 degrees F. If the oxygen is used as a constant flow rate of 2 L/minute, measured at 1 atm of pressure, how long will the tank last? Hint: Calculate the mass (grams) of oxygen in
asked by Lindsey 
College Algebra
If 24% of your monthly pay is withheld for federal income taxes and another 6% is withheld for Social Security, state income tax, and other miscellaneous items, leaving you with $989.50 a month in takehome pay, then the amount you earned before the
asked by Nancy 
physics
Calculate the angular velocity of the minute hand of a clock.
asked by amy 
Math
Richard is flying a kite. The kite string makes an angle of 57 degress with the ground. If Richard is standing 100 feet from the point on the ground direcly below the kite, find the length of the kite string.. Please help!!!
asked by Barnie 
Chem
How do you find the pH for 0.010M of HNO3?
asked by Leena 
math
An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
asked by ashely 
Physics
The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
asked by Kristen 
accounting
(TCO 8) Partial balance sheets for ABC Company and additional information are provided below. ABC Company, Partial Balance Sheets, As of December 31 2009 2008 Equipment $100,000 $75,000 Accumulated depreciation (25,000) (20,000) Common stock, $5 par
asked by janet 
Intro to Physical Science
A car whose mass is 1000 kg is traveling at a constant speed of 10 m/s Neglecting any friction, how much force will the engine have to supply to keep going the same speed?
asked by Anonymous 
trigonometry
convert the polar equation r^2=2cos^2theta + 3sin^2theta into a rectangular equation
asked by casey 
Math
An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
asked by ashely 
Physics
Much of the time and expense in drilling an oil well goes into changing the drill bit as it wears out. the drilling pipe must be pulled up and disassembled one section at a time in order to pull the drill bit out of the hole and replace it. A pipe 0.65
asked by micky 
cómo comenzar a aprender inglÃ©s?
Necesito aprender inglés y no sé por donde comenzr, por favor, ayuda.
asked by maria 
Accounting
How does an inventory writeoff effect the cash flow statement?
asked by Rhea 
College Algebra
If 24% of your monthly pay is withheld for federal income taxes and another 6% is withheld for Social Security, state income tax, and other miscellaneous items, leaving you with $989.50 a month in takehome pay, then the amount you earned before the
asked by Nancy 
ethics
A person driving home late one evening on a dark, deserted road comes across a singlevehicle accident. Getting out of the car and viewing the damaged vehicle, it is clear that the lone occupant, the driver, is hurt and unconscious. Wishing to help the
asked by Ria 
math
Find the # of possible choices for a 2 digit password that is greater than 19. Then find the # of possible choices for a 4 digit PIN # if the digits can not be repeated. HELP!
asked by Kory 
Accounting
a. IPC purchases real estate in prime locations where an existing theatre chain does not adequately serve the market. After purchasing the real estate, IPC engages a contractor to build a theatre complex. During fiscal 2009, IPC received a $2,000,000
asked by Rhea 
science acids and bases
what can you tell about the equations 2 P2O5?
asked by Stacey 
Math
A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.
asked by ada 
Science
Write a mechanism for the aldol reaction of 3,3dimethyl2butanone.
asked by Anonymous 
Chemistry Help!
In the n = 5 principal shell, what is the maximum number of electrons that can have m1= 2
asked by Kamila 
physics
While on the moon, the apollo astronauts enjoyed the effects on gravity so much smaller then that ont he earth. If neil armstrong jumped up on the moon with the initial speed
asked by Casey 
math
Maximize P = 2x − 3y subject to x + 2y ≤ 14 6x + y ≤ 18 x ≥ 0, y ≥ 0
asked by Leah 
Physics
The total area of contact between the tires of a racing bicycle and the road is 1.5 square inches. The bicycle and its rider weigh 171 pounds. What is the air pressure inside its tires?
asked by Kristen 
Calculus
The position in meters of a particle is given by f(t)= 14t3t^2, where t is measured in seconds. a) Evaluate f'(2) and interpret the results. This is how I solved this. f'(t)=146t= 2(73t) f'(2)=2(73(2))= 2 This means the velocity of the particle is 2
asked by Janet 
Geometry
I missed this problem on my test. I had 23 ft and the correct answer was 16 ft. How should I of worked this problem? A trapezoid has base lengths of 8.5 and 14.5 feet with the area of 184 square feet. What is the height of the trapezoid? Thanks for your
asked by mary 
physics
What is the value of the gravitational acceleration at a height of 2000 km above the surface of the Earth?
asked by azure 
math
In standard (x,y )coordinate plane,the graph of (x2)^2 + (y+4)^2=9 is a circle.What is the area enclosed by this circle,expressed in square coordinate units?
asked by ashley 
Math
Richard is flying a kite. The kite string makes an angle of 57 degress with the ground. If Richard is standing 100 feet from the point on the ground direcly below the kite, find the length of the kite string.. Please help!
asked by ashely 
physics
A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;
asked by Kaylynn 
Geometry
A cylindrical flower pot with an open top needs to be painted. The height of the pot is 9 inches and the radius is 3 inches. If it takes Troy 5 minutes to paint 40 square inches, how long to the minute will it take him to paint the outside of the flower
asked by mary 
Math
Josh has 15 sports cards. He has 3 more baseball cards than basketball cards. How many baseball cards does he have?
asked by Anonymous 
Calculus
Hi, I need someone to double check my answer because it doesn't seem right to me. Find the centroid of the region bounded by y=0 and y = x^2 2x. I calculated the area to be 4/3 and centroid (1, 0.4)... is that correct? Thanks in advance!
asked by Monica 
College Math
In Exercises 63–68, determine the length of the sides and the measures of the angles for the congruent quadrilaterals ABCD and A′B′C′D'...BCD
asked by Nette 
Math
State the area, A, of the bottom of the box in terms of x. length = 8.5 inches width = 11 inches
asked by Brandon 
math
factor the expression below using the greatest common facror 12n^5 + 8n^3 +6n
asked by pableen 
math
What are the corner points for the feasible region given on the right? gg
asked by alaina 
nurse entrance test
After deducting 16 and 2/3 percent the price of a blouse is $35.00. The list price is what? Is it 42.00 for the list price?
asked by Marilyn 
Geometry
find the surface area of a right cylinder with a diameter of 4cm and a height of 6cm. Round to the nearest hundredth. Book answer is 100.53cm^2 I came up with 150.79cm^2 my work: 2rr(4)6)=150.79cm^2 What did I do wrong??
asked by mary 
math
The constraints [x >= 0,y >= 0] indicates that the feasible region will be in the first quadrant. it is true or false
asked by sateko 
History
how did the Nazisoviet nonagression pact lead to the war in europe and asia?
asked by Brittna 
MATH
In right triangle ABC below, what is the sine of
asked by ashely 
Math
In a fish tank, there are two fewer blue fish than three times the number of yellow fish. If there are 10 blue fish, what is the number of yellow fish(n). Write an equation to solve for n.
asked by Ali 
science
I boiled eggs in organce and apple juice to see if the eggs would boil. The eggs boiled. I didn't think the eggs would boil because of the acidity in the orange and apple juice. I got B on my sciene project. My science teacher wants for me to improve my
asked by catarina 
math
An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. What is the angle of elevation of the airplane's path? (hint: 1 mile = 5280 feet)
asked by ashely 
Social Studies
We need a copy of Florida studies weekly for the current week we are in. Student copy do you have any idea how we can get access of that electronically
asked by Caitlyn Vastine 
physics
A patient of mass 75kg sits in a wheelchair of mass 30kg. What is the force needed to push both up a 30 degree slope? If the carer stops on the 30 degree slope and applies the brake, what is the magnitude and direction of the frictional force preventing
asked by Declan 
algebra
sean has $86 to spend. he can spend all of it on one cd and two dvd's, or he can buy two cd's and one dvd and have $16 left over. what is the price of a cd? of a dvd?
asked by Anonymous 
Math
Select a variable (mean or proportion) of interest to you and collect or find the data. BEFORE you collect the data, decide what a likely mean or proportion might be. Then address the following (and a little more) in your project. a. Write a brief
asked by mike 
math
A factory needs two raw materials, say, A and B. The probability of having an adequate supply of material A is 0.94, whereas the probability of having an adequate supply of material B is 0.96. A study shows that the probability of a shortage of both A and
asked by Fakaapo 
Physics
a man jumps off a bridge to see how high it is. he measures his time of descent. he is in the air for 3.0 s before splashing into the water below. a. How high is the bridge above the water? b. How fast is the man going as he hits the water?
asked by joe 
English
Can you please see if everything is correct? Thank you. 1) She said she couldn't stand science fiction or documentary films. 2) Peter asked her if she was going to leave for London that weekend. They asked us if we were Italian. 3) Jane asked me if I could
asked by Mike1 
Science Please someone help
Using electronic arguments, explain why the alphahydrogens of carbonyl compounds are considered to be "acidic hydrogens."
asked by Anonymous 
Physics
A small boy is flipping a piece of cake across the lunch room at school. He uses a fork as a catapult by holding the handle on the table and pressing on the back of it with his thumb. Only part of the energy delivered to the fork goes into the accelerating
asked by micky 
College Algebra
If 24% of your monthly pay is withheld for federal income taxes and another 6% is withheld for Social Security, state income tax, and other miscellaneous items, leaving you with $989.50 a month in takehome pay, then the amount you earned before the
asked by Nancy 
Alegebra
Solve for x & y: 3X6Y(6X+34)=30
asked by Ken 
math
two dice are rolled. their sum is recorded. what is the probability that their sum is between five and ten?
asked by Donald 
physics
When you stand 200 meters away from a 30 meter tall tree, what angle should it take up on the horizon?
asked by amy 
gymrights and responsibilities when ending a rel.
what rights and responsibilities do i have when you are a friend of the person whose friendship was ended by their friend
asked by ted 
Accounting
How is a contract penalty recorded for the company that hires a contractor?
asked by Rhea 
geometry
how many cubes with a side length 5cm do fit in a cube with a side length 20cm?
asked by .... 
math
If the solution to the linear programming problem exists, then it has to be at a corner point.it is true or false?
asked by sateko 
math
A stereo system that regularly sells for $240 goes on sale for $192 what is the percent discount From jumpstart booklet grade 8
asked by Anwar 
English
I urgently need to know a good site where to find reading comprehensions at a preintermediate, intermediate level to be set as part of a onehour English test. I still have some doubts about a few sentences I need to check. I hope you can clarify them.
asked by Mike1 
American kitchen technology in the 1950s
Do you know of any websites that talk about new cooking technology inventions that were created/ starting to be used in the 1950s? Thanks:)
asked by Rebekah 
math
write three 9s with a division sign and an addition sign to make a value of 10
asked by Jamie 
Math
A vendor has 14 hellium ballons for sale: 9 are yellow, 3 are red, and 2 are green. A ballon is selcted at random and sold. If the ballon sold is yellow, what is the probablity that the next ballon selected at random, is also yellow?
asked by ashely 
math
Which type of graph would be most appropriate to show the students in the debate club, the computer club and the ecology club and the students who are in more than one of these clubs? A bar graph, line graph, Bennett diagram, or a circle graph? Is it a
asked by Nick 
math
From the top of a lighthouse 210 feet high, the angle if depression to a boat is 27 degress. Find the distance from the boat to the food of the lighthouse. The lighthouse was built at sea level.
asked by ashely 
statistics
Find the area between x = 9.5 and x = 23 under a normal distribution curve with μ = 20 and σ = 4 .
asked by Katie 
Physics
A car with a mass of 890 kg travels at a speed of 20.0 m/s. Seeing that the road ahead is blocked by a rock slide, the driver applies the brakes, stopping the car. The work of stopping the car becomes thermal energy of the car’s four disk brake rotors;
asked by Kaylynn 
math
scott bought two items at daves fruit market. the cashier told him that he owed $5.49. why is the cashier incorrect? what did scott purchase? DAVE'S FRUIT MARKET grapes $2.25/bag bananas $ 1.99/bag strwberries $3.40/box watermelon $5.00
asked by kylie 
Essay evaluation
Please grade my GMAT essay on 6 The author of the statement believes that the century old practice of using money in its physical form should be replaced by electronic accounts of credits and debits. Some people may argue that this practice is elitist and
asked by Steven 
maths
a worker dig a ditch with perpendicular sides.It is 1.05m wide at the top and at the bottom. If it is 1.80m deep and 21.6m long.How many cubic metres of earth are removed?[give your answer to 1 decimal place.]
asked by emily 
Maths
Sketch the graph of each function below and give the domain and range for : 1. f(x)= ( x1)to the power of two minus 2.
asked by Willy 
MATH
1.Isoscles obtuse triangle TRI with vertex angle T. 2.Rhombus RHOM with acute
asked by ashely 
math
calculate the effective yield, then rank them from highest yield to lowest yield: 12% compound annually 11.8% compound quarterly 11.9% compound semiannually
asked by darrell 
12 grade math
If Y varies inversely as X^2, determine what Y would be if X = 2 and another point on the equation is (1,8).
asked by ki 
physics
If a coffee can has a radius of 63.0 cm and a height of 15.8 cm find its volume round to neaerest cm3
asked by Anonymous 
problem solving
if a circuit has a3.9k resistor and a5uf capacitor, find the current flow in the circuit at 0.005 seconds, if the maximum current flow in the circuit is 105mA
asked by bobby 
PreCalculus
Let F1 = 219.5, F2 = 447.3, θ1 = 52.79◦, θ2 = 7.831◦. Find the magnitude of the resultant F1 _\_ θ1 (in quadrant 3 positive)  F2 _/_ θ2 (in quadrant 1 positive)  I know this is probably hard to understand but I cannot draw diagrams on here
asked by Peter 
English macbeth act 2
hey can you provide me with a couple of MCQ for macbeth act 2, and does anyone know the images and mood in each scene of act 2.. plz i need to know because i have a test and i have no clue about the things listed above thanks!
asked by Mark J 
math
calculate the effective yield, then rank them from highest yield to lowest yield: 12% compound annually 11.8% compound quarterly 11.9% compound semiannually 11.7% compound daily
asked by charlene 
Calculus
Hey, we covered limits at the beginning of the year, but I cannot remember how to do them at all. >>>what is the limit, as x approaches 2, of ((1/x )(1/2))/(x2)? Please go step by step!
asked by Rachel 
chemistry
how many mL of 0.50 M ammonia would be needed to react with 1.0 L of 0.75 M HClO4
asked by me 
help chem quick question!
I have to find a food label that has horrible chemicals in it (such as dextrose). I am supposed to find 2 food lables with the nastiest labels.? What foods would be a good choice?
asked by Samantha 
English
I forgot to include the following sentences. I really hope you can have a look at them, too. 1) But I heard his voice, which sounded very low. I couldn't see his face because he escaped very quickly. 2) The only thing I remember is that is was carrying
asked by Mike1 
math
What two numbers are we ? Our quotient is 19 and our sum is 100.
asked by Jamie 
math
Look at this trinomial 32a^4 + 18a^3  12a Write the polynomial as the product of the GCF of all its terms and a polynomial PLEase explain thanks
asked by Karen 
calculus
Please help with this very complicated question! Using 3(x3)(x^26x+23)^1/2, as the chain rule fifferentiation of f(x)=(x^26x+23). Please explain how I find the general solution to dy/dx= 2/27(x3)SQUARE ROOT BEGINS (x^26x+23)/y SQUARE ROOT ENDS (y>0),
asked by Amy 
statistics
Let x be a continuous random variable that is normally distributed with a mean of 65 and a standard deviation of 15. Find the probability that x assumes a value less than 44.
asked by Katie 
statistics
Let x be a continuous random variable that is normally distributed with a mean of 65 and a standard deviation of 15. Find the probability that x assumes a value less than 45.
asked by Katie 
statistics
Let x be a continuous random variable that is normally distributed with a mean of 24 and a standard deviation of 7. Find the probability that x assumes a value between 27.5 and 59.0. Use Table IV in Appendix C to compute the probabilities. Round your
asked by Katie 
MATH
A bike club wants to make license plates for bikes. Each license plate has a letter followed by a digit. How many different license plates can be made?
asked by JORDAN 
Chemistry
Determine whether the following reaction is endothermic or exothermic: Mg(g) + 2 F (g)> Mg 2+(g) + 2 F Mg: I1= 738 kJ/mol I2= 1451 kJ/mol F: EA= 328 kJ/mol
asked by Kamila 
Prep chem
A gas occupies 30L at 25 celsius. What volume will it occupy at 200 celsius at the same pressure?
asked by Laura 
Calculus
I need to find the second derivative of y=x(x1)^1/2. I found the first derivative is 2x1/2(x1)^1/2, if someone could check, but I am miserably stuck on the second derivative.
asked by Amie 
English
what is the simple predicate in the sentence, I could hear the wind blow through.
asked by Sandra 
English
I forgot to include the following sentences. Thank you very much for your help. 6) "Anything could happen while we are out there", says Simon. "We might have an incident and injure ourselves, our motorbiles may break down, so we have decided that we need a
asked by Mike1 
chemistry
4. How would you convert 9.0 grams of water to moles?
asked by Anonymous 
chemistry
5. What is the conversion factor that you would want to use to convert 2.0 moles of NaCl into grams?
asked by Anonymous 
grammar
What is the sentence structure, purpose and pattern of this sentence?? My dog, Ben likes to chase cats and birds.
asked by Renea 
math
How do you find one fourth or two thirds?
asked by Kelly 
geometry
Two sides of a triangle measure 8 and 15. How many integer values can be assigned to the third side so that all the angles in the triangle are acute?
asked by samuel 
gymrights and responsibilities when ending a rel.
what rights do you have when ending a friendship or relationship? what rights and responsibilities do you have when you are the person who has had the friendship or relationship ended by the other person?
asked by ted 
Math
The radius of a disk grows at 2cm/s. Calculate the growth rate of the disks area when the radius mesures 7 cm. (Designate the area of the disk with A and the radius with r) A) Find the relation between A and r B) Find the derivative of this relation on
asked by Ralph 
Algebra II
find Sn for geometric sequence with a1 = 8, n = 9, and r = 1? Sn = a1(1r ^n) / (1r) = 8(11)/(1+1) = 8(0)/2 = 0 is this correct..?
asked by anonymous 
English
Whast is the full meaning of APA Style?
asked by JoshelaT 
math
hello i need help with system of equations theres 3 only thank you 2x+3y17 3x+y=31 2(x3y)=24 y=3x2 2(x+4)=24 x+y=17
asked by alex 
math
When graph a linear inequality, we use solid line if the sign of inequality is < or >.it is true or false
asked by sateko 
math
a cross section of a hollow circular pipe shows that its inner diameter is 2 1/10inches and that the pipe is 3/5inch thick. what is the outside diameter
asked by rachel 
Social Sciences
I have to present a bill of why prostitution should be legalized in the U.S. in school and was wondering if anyone has some fun or interesting ideas to really get the class interested in my topic. I really don't want to blend in with the same old
asked by Tiny 
math
hello i need help with system of equations theres 3 only thank you 2x+3y17 3x+y=31 2(x3y)=24 y=3x2 2(x+4)=24 x+y=17
asked by alex 
math
In triangle ABC if
asked by ashely 
Algebra Please Help
If x is 10, is 2/x in proportion to x/50? Why I am not understanding the question very well. Algebra is not easy for me.
asked by Amy L 
Chem help!!!!
I am supposed to find 2 food labels that have high chemicals in them. This is the instructions he gave us: Highlight all CHEMICAL names on the label (DO NOT COUNT wheat, flour, sugar, salt, oils, salt, etc) (however dextrose would count) please help me
asked by Samantha 
need alot of help please math
hello i need help with system of equations theres 3 only thank you 2x+3y17 3x+y=31 2(x3y)=24 y=3x2 2(x+4)=24 x+y=17
asked by hannia 
math
Help me calculate 6  3/4 And place in order greatest to least 1/3, 4/9, 3/4, 5/6, 5/8, 2/3 3/12, 2/5
asked by Ryan 
6th grade math
Find the sum of the angle in each regular polygon. (Pentagon)
asked by katie 
Natural Regions/Canada
Should old growth trees be cut down and used or preserved? The only thing I know is that they grow in the Coastal forest region. The coastal forest region has both old growth and new growth stands of trees. The old growth trees are optimum for use in the
asked by Anonymous 
Algerbra
3(y3)=(x+6)squared how do you find the vertex and foci,directrix
asked by Mario 
Public and Private schools
Could I know the difference between these two schools. I go to a public school so Im not sure what a private school is. All that I do know is that the students learn about religion more. Also should all the schools be fully funded by the Ministry of
asked by Anonymous 
science
i need help on " define upwelling and explain its importance"
asked by kathy 
calculus
Determine the exact value for the constant k such that the area of the region bounded by the curves y=x and y=kx^2 is equal to 2/3 sq units. Any help is appreciated.
asked by Jenn 
French
What does this phrase mean? Puis, pendant le voyage je vais ecouter vos histoires une par une. Then, during the trip I am going to listen to your stories one by one. Is my translation correct?
asked by Sydney 
CHEMISTRY
What is the meaning of negative couplage in NMR
asked by shahram 
american government
• What factors make it more likely that a bill will become law? What factors make it less likely?
asked by Bubba 
algebra
v^664 factor
asked by bianca sorry 
math
(BC)^2=(CB)^2 ,where B and C are (n x n) matrices.what is the answer, it is true or false
asked by Fakaapo 
math
In triangle ABC if
asked by ashley 
trig
simplify the expression sin(theta+pi/4) + sin(thetapi/4)
asked by casey 
math
find x for a triangle that has 100 degrees and 47 degrees.
asked by Louis 
math
If you were standing in the back of a truck moving at 70 mph, and you threw a baseball in the opposite direction at 50 mph, would it come back and hit you? I think it would.
asked by Anonymous 
MATH
In right triangle ABC below, what is the sine of
asked by ashely 
arithmetic
using 1,2,6,7 and arithmetical symbols make equation to get 33 as answer
asked by radheshyam 
history
To what extent and in what ways did the great depression and the new deal alter americans perception of the legitimate role of government in the economic and social life of the united states?
asked by Trevor 
mechanics
a particle is moving with a velocity of 6m/s when subjected to an accelaration of 3m/s for 4 seconds.it then moves with a constant velocity for 2 seconds.draw a velocitytime graph.
asked by ehmzee 
Math
If the area of a square is 36 sq. Ft., explain how you could find the perimeter.
asked by Emily 
ethics
Does the principle "the end justifies the means" hold true under each the three major ethical theories? Why or why not.
asked by Ria 
college math
is 3/11=7/19 a proportional fraction
asked by mick 
us history
Explain why the U.S. supported a policy of the open door?
asked by AJ 
Medical Coding/Billing
how are E and V codes used in an inpatient and outpatient setting
asked by cheryl 
math
hello i need help with system of equations theres 3 only thank you 2x+3y17 3x+y=31 2(x3y)=24 y=3x2 2(x+4)=24 x+y=17
asked by alex 
science
students can use any of the items above to build an electromagent. which item is NOT needed to build an electromagent?
asked by jessica 
english
I need 10 questions of how to prevent/help children from performing violent actions towards others at school
asked by naresh 
PreCalculus Vectors
Let u = 2i − j, v = −i + j. Find 2u  3v.
asked by PETER 
ART
What is decoupage? i don't understand.
asked by Nisa 
math
Monday=6 Wednesday=9, and Saturday = 8. Find the sum of the values of all 7 days of the week.
asked by Jamie 
Political Science
If America were to propose an amendment allowing children to be represented as voters through their guardian or parent do you think this is a good thing? For example, a parent of a young child will give two votes, one for themselves and then other on their
asked by Francis 
Math
Please help, I need help with the substition method in math!!!!!!!
asked by Evan 
physical science
which of the following statements concerning air resitance is false? a. skydiverscan influence their speed by changing thier body positioning b. objects that fall together in a vaccum may fall at differnt speeds in air. c. it is easier for a pitcher to
asked by deonne 
English
I urgently need you to revise these questions as a postreading activity. Can you please check the questions? 1) Jamal is planning a trip around the world on his motorbike with his friend Simon. Possible question: Is Jammal travelling alone/on his own? 2)
asked by Mike1 
Algebra II
find Sn for geometric sequence with A1 = 8, n = 9, and r = 1 Sn = A1 = 8, n = 9 and r = 1 Sn = A1(1r^n) / 1r = 8(1  1^1)/(1(1)) = 8(0)/2 = 0 is this right ?
asked by anonymous 
Math
Lawrence records the number of minutes he reads each day show below Day 1: 75 mins Day 2: 30 mins Day 3: 25 mins Day 4: 50 mins Day 5: 80 mins How many minutes must Lawrence read on the sixth dat of have mean of 55 minutes read for the 6 day?
asked by Dani 
math
what is x^3= .0013071??
asked by Sam 
Private Enterprise
Could I please know what this means?
asked by Anonymous 
math
How many dates in 2011 are a multiple of 10? (A date in the case is a month and day, such as May 20.)
asked by Jamie 
history
Reasons for casualties in the civil war?
asked by kathy 
math
how do i solve the problem of _____________________________ 0 14 20 i have to find out what the percentage is
asked by brit 
science
How much water should be added to 55.0 mL of 0.201 M HCl to dilute the solution to 0.155 M?
asked by Lauren 
literature
Why the Nurse is eager for Paris to marry Juliet?
asked by john 
science
specific heat and thermal conductivity of PEG600, Mn(NO3)2·6 H2O, Paraffin C13C24
asked by muthaiyan ravikumar