Questions Asked on
March 1, 2013

Chemistry
If an 0.650 m aqueous solution freezes at –2.00 °C, what is the van't Hoff factor, i, of the solute? Kf values can be found here. the Kf value is 1.86 °C/m. I get 2 for the answer but it is wrong. Please help!
asked by Anonymous 
science
Suppose that the 1.3 km span of the golden gate bridge had no expansion joints. Calculate how much longer the bridge would be if the temperature of the bridge increases by 35 degrees celsious
asked by Joey 
Chemistry
If acetic acid is the only acid that vinegar contains [Ka = 1.8*105] , calculate the concentration of acetic acid in the vinegar. pH of vinegar is 3.20 _______________ First I got the antilog of the pH given, which turned out to be 6.309E4. Then I did
asked by Jonah 
algebra
Solve the formula for the variable given. P = rc/n solve for c. (business) I have worked this problem so many times I'm getting confused. please help. Thanking you in advance
asked by sally 
chemistry
A sample of propane C3H8 contains 13.5 moles of carbon atoms how many total moles of atoms does the sample contain?
asked by Marcus 
Math 75
if you paid $120 to a loan company for the use of $2000 for 90 days, what annual rate of interest did they charge?
asked by Tiffany 
Physics
A current of 4.00 A flows through the heating element of heater converting 500 J of electrical energy into thermal energy every second. What is the voltage across the ends of the heating element? a. 2000 V b. 125 V c. 250 V d. 0.008 V e. 0.125 V
asked by John 
english
Click on the box to choose whether each sentence restates the key idea expressed in the key sentence. Key Idea: When hot weather arrives and the nation takes to the outdoors, mishaps multiply. Drowning is the fourth most frequent cause of accidental
asked by ty 
math
An investor purchases 75 shares at 37.90 a share, holds the stock for 150 days, and then sells the stock for 41.20 a share. Find the annual interest rate earned. principal under 3000 300010,000 over 10,000 commission 32+1.8% of principal 56+1% of
asked by Tiffany 
algebra
Triangles ABC and DEF are similar. Find the perimeter of triangle DEF. Round your answer to the nearest tenth.
asked by sally 
Chemistry
Radium223 has a halflife of 11.4 days.Approximately how long would it take for the activity of a sample of Radium223 to decrease to 1.00% of its initial value?
asked by Michelle 
English
Scientists report (1) THAT CREATURES LIVING IN THE DEEP SEA ARE IN DANGER OF STARVING TO DEATH. Millions of undiscovered species live, in the deep sea. Creatures in the seabed are suffering from growing food shortages. Which may be a result of rising sea
asked by Danii 
chemistry
Propane reacts with oxygen in a combustion reaction. What volume of carbon dioxide gas is formed when 20 L of propane are reacted with 55.7 L of oxygen?
asked by john 
physics
Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere. The delicate instruments on board completely fail at a height of 61.5
asked by marcie 
QSO
Adele Weiss manages the campus flower shop. Flowers must be ordered three days in advance from her supplier in Mexico. Advance sales are so small that Weiss has no way to estimate the demand for the red roses. She buys roses for $15 per dozen and sells
asked by Anonymous 
statisics
What is the confidence level of each of the following confidence intervals for u? x+/1.96(o/SR N) ht t p : / / w w w . a l l i a n t h a w k . o r g / i m a g e s / C ON F I D e n c e _i nt e r v a l _ n o_ b ac k g r o u n d . g i f it looks like that,
asked by ginger 
math
an ant walks 30 feet in 6 minutes. how long will it take the ant to walk 35 yards?
asked by janiece 
math
You need 2 cups of orange juice to make 3 quarts of punch.How many cup of orange juice do you need to amke 3 gallons of punch?
asked by janiece 
Math
Find the number of each kind of object in the collection Curt has 12 models in all. Three of the models are airplanes. Curt has 5 more models of cars than boats. How many models of cars does Curt have?
asked by TJ 
Physics
In a "Rotorride" at a carnival, people are rotated in a cylindrically walled "room." The radius of the room is 4.0 m, The coefficient of static friction is μ=0.13. What is the minimum rotation frequency such that the people will not slide down the wall
asked by Derrick 
math
a gardener places lilies in a pond.He does on the first day of the month of september.it double in volume every day until the last day of the month,the pool is full.On what day of the month was the pool half full of lilies?
asked by sarah 
math
Find the derivative of the function f by using the rules of differentiation. f(x) = x^4  4x^2 + 3 f '(x) =??
asked by Ashton 
US History
What was the goal of the Missouri Compromise? to create a slave state and a nonslave state to create a free state where fugitive slaves could live to establish a line between slave and nonslave states to settle a disagreement between Missouri and
asked by Max 
Linguistics
Underline the stem extenders in the following words: Philosophy Somnipathy Metaphor Induction Hypnotic Anthropology Pneumectomy Acrid Tennons Extension Saltpeter Maternal
asked by Baaba 
physics
A package slides down a 135 m long ramp with no friction. If the package starts from rest at the top and is to have a speed no faster than 19m/s at the bottom, what should be the maximum angle of inclination?
asked by Anonymous 
Statistics
As part of a fund raising campaign, the 12 members of the governing board of an organization pledge to raise $100,000. In the first month of the campaign, the average amount raised by the 12 board members is $5,200. How much more must they raise, on
asked by A 
Applied Calculus
Let f(x) = x3 − 4x2. Find the point(s) on the graph of f where the tangent line is horizontal.
asked by Jacob 
algebra
X= log base 3 1/27
asked by George 
math
A rectanglar blacktop with a length of 5x and a width of 3x has been erected inside a rectangular field that has a length of 12x and a width of 7x. What is the area of the part of the field that is not blacktop? (I believe the answer is 69x^2) There is a
asked by Jane 
Math (2nd Try)
A rectangle has a length of 6x^3 y^2  1 and a width of 3xy + 2. The formula for the perimeter of a rectangle is P=2l + 2w, where l is the length and w is the width. What is the perimeter of the rectangle? Simplify your answer.
asked by Jane 
math
George finds a company that charges 59 cnets per day for each 1000 borrowed. if he borrows 3000 for 60 days, what amount will he repay, and what annual interest rate will he pay the company?
asked by Tiffany 
German
Ich schminke mich lieber als er sich. is this incorrect or correct?
asked by d 
Mathstatistics
Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 689599.7 rule to find the following quantiles: a.percentage of scores less than 100 b. relative frequency of scores less than 120 c.
asked by Jane Brown 
Math
In the roulette game, what is the probability of an outcome of: Any odd number Any green number Any number that is red or green Any number that is red and even
asked by Therese 
Criminology Statistics
A given distribution has a mean of 60. A score of 75 had a corresponding z of +2.00. The standard deviation is
asked by Mariah 
Chemistry
0.15g of hydrogen chloride HCl is dissolved in water to make 8.0L of solution. What is the pH of the resulting hydrochloric acid solution?
asked by Jonah 
mathstatistics
Assume the body temperature of healthy adults are normally distributed with a mean of 98.20 degrees F (based on data from the Uniservity of Maryland researchers).a. If you have a body temperature of 99.oo degrees F, what is your percentile score? b.
asked by Jane Brown 
math
Three forces act concurrently on a point P as shown below. Which vector represents the direction of the resultant force on point
asked by john 
Math
Find the number of each kind of object in the collection. Sue's Card Collection 8 packs of baseball cards 3 fewer packs of hockey cards than football cards 17 packs in all
asked by Quan 
trig
10sinB+5 = sinB+5
asked by brittany 
algebra
Triangles ABC and DEF are similar. Find the perimeter of triangle DEF. Round your answer to the nearest tenth. ab=4ft bc=6ft ac=5ft de=6ft ef= 9ft there is no feet given for df Please can anyone help me solve this with steps I don't understand how to do
asked by sally 
Physics
If a Mack truck and Honda Civic have a headon collision, upon which vehicle is the impact force greater and which vehicle experiences the greater acceleration? I know they have same force.
asked by Sally 
Physics
A space probe is carried by a rocket into outer space where it continues to move on its own in a straight line. What keeps the probe moving? Is the answer: the gravitation forces from diﬀerent stars and planets
asked by Sally 
Calculus AP
Let R be the region bounded by the graphs of y=cos((pi x)/2) and y=x^2(26/5)x+1. A. Find the area of R. B. The vertical line x=k splits the region R into two equal parts. Write, but do not solve, an equation involving integrals that solves for k. C. The
asked by Jess 
math
if X is 10% of two other numbers,Y and Z,and Z is 3 times the value of Y.What percentage is X of Y alone ? please show me how you work it out,thanks
asked by sarah 
Physics
A projected space station consists of a circular tube that is set rotating about its center (like a tubular bicycle tire) as shown in figure below. The circle formed by the tube has a diameter of about D = 1.28km. What must be the rotation speed (in
asked by Anonymous 
math
complete the pattern:1,2/3,4/9,4,4,4
asked by sarah 
calculus
a road that runs perpendicular to a highway leads to a farmhouse located one mile off the highway an automobile travels down the highway past the road leading to the farmhouse at a speed of 60 mph how fast is the distance between the farmhouse an
asked by diego 
US History
Which answer best describes the main purpose of Monroe Doctrine? to claim new United States territories in the West to warn European countries to stop colonization in the Western Hemisphere. to express that American politics and ideals were superior to
asked by Max 
PSYCHOLOGY
How would you characterize the work environment at Ford in the 1920s?
asked by TIA 
US History
A treaty was signed in 1842 to end the border dispute between the United States and Britain in Maine. Which best expresses the end result for Britain? the British lost all the territory in Maine The British territory was bigger than that of the U.S. The
asked by Max 
US History
What did the Supreme Court cases and the ultimate outcome for the Cherokee suggest about future dealings between the United States government and Native Americans? (3 points) The U.S. government would most likely follow the rule of law and abide by court
asked by Max 
US History
What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee Im thinking two Supreme Court decisions?
asked by Max 
math
How do I find this integral using weierstrass substitution? 1/(94((sinx)^2))
asked by Zach 
Chemistry
There are several technological applications for the transuranium elements (Z > 92). An important one is in smoke detectors, which can use the decay of a tiny amount of americium241 to neptunium237.What subatomic particle is emitted from that decay
asked by Michelle 
algebra
A conic section has the equation x^2+y^2+12x+8y=48. Determine the following; type of conic, domain and range, axes of symmetry, and center.
asked by lee 
physics
Suppose we have two qubits in the state (a0⟩+b1⟩)0⟩, to which we apply the following circuit. (a) Is the resulting state entangled? Yes No (b) Specify the state of each qubit after we applied the circuit.
asked by s 
Language Proof and Logic(Philosophy)
exercise 5.8 write an informal proof of Premises: LeftOf(a,b)  RightOf(a,b) BackOf(a,b)  ~Leftof(a,b) FrontOf(b,a)  ~RightOf(a,b) SameCol(c,a) & SameRow(c,b) conclusion BackOf(a,b) State if you use proof by cases.
asked by Ashley 
Math
Which set of side lengths shows similar triangles? Triangle ABC : 40, 20, 50; Triangle XYZ: 10, 12.5, 10 Triangle ABC : 30, 20, 30; Triangle XYZ: 40, 30, 20 Triangle ABC : 110, 80, 60; Triangle XYZ: 12, 16, 22 Triangle ABC : 32, 20, 32; Triangle XYZ: 40,
asked by Morgan 
Cosmology
What can we say about the future evolution of irregular clusters? They will become less centrally concentrated and assume a roughly uniform spatial density. They are not yet in a dynamical equilibrium, but will likely reach it eventually. They will keep
asked by C 
Cosmology
The majority of galaxies (by number) are: lenticulars barred spirals dwarfs giant ellipticals
asked by C 
Statistics
Find the average of the distribution given below. Value Percent of entries 16 10 3 25 5 45 8 20
asked by A 
business math
Find the greatest possible error of the measurement. 7 3/16 inches I don't understand this at all.
asked by tmouery 
social studies
information ob taxation without representation on sugar act, stamp act, and Townsend act(townshed act)
asked by Anonymous 
science
a cheetah runs at a speed of 30.0m/s. How long does the cheetah take to run 90.0m
asked by nefeataria 
Econometric SAS
I am having trouble figuring out the correct code. I am trying to do an unrestricted and restricted model of a CobbDouglas Production Model. lnQ=B1 + B2 lnL + B3 lnK + e This is my code data cobb; infile 'cobb'; input q l k; proc reg data = cobb; model q
asked by somebody 
world geo
Explain how Western Europe's physical geography affects its climate, settlement patterns, culture, and economy
asked by Anonymous 
Social studies.
Taxation without representation For sugar act 1764 , stamp act 1765 and Townsend act 1767
asked by Anonymous 
MATH
A tin is a right circular cylinder with a diameter of 6 meters and a height of 10 meters. What is the surface area of this tin, in terms of pi?
asked by XAVIER 
physics
Find è and W in the figure below where w1 = 17.0 N, w2 = 31.0 N, and á = 67.5°, assuming that the arrangement is at rest.
asked by No1Here 
health
What is the eleven letter word that describes the process by which the alcohol leaves the body.
asked by colleen 
HELP PLEASE!!!!!!!
(This question has been removed due to a copyright claim submitted by Connections Education.)
asked by Bell 
German
What is the reflexive pronoun "mich" in the following sentence? "Ich sehe mich im Spiegel." primary constituent past participle direct object indirect object
asked by f 
chemistry
6.25 L of a propanoic acidpropanoate buffer must be prepared. The pH of the buffer needs to be 5.05. The solution will be 0.120M in propanoic acid. If the propanoate ion comes from the strontium propionate Sr(C3H5O2)2 then how many grams of strontium
asked by Studious 
Math
How much interest will I pay on a £115000 mortgage over 22 years at 4.83% Your kind cooperation would be much appreciated
asked by Claire 
chemistry
A buffer is made by combining 3.50 L of 0.200M butylamine, C4H9NH2 with 7.50L of 0.100M butylammonium chloride, C4H9NH3Cl. Assuming that volumes are additive, calculate the following. A) the pH of the buffer. B) the pH of the buffer after the addition of
asked by Studious 
chemistry
A buffer is made by combining 3.50 L of 0.200M butylamine, C4H9NH2 with 7.50L of 0.100M butylammonium chloride, C4H9NH3Cl. Assuming that volumes are additive, calculate the following. A) the pH of the buffer. B) the pH of the buffer after the addition of
asked by Studious 
Geometry
Luis has a simple calculator that has buttons for the digits 0 through 9, each of the 4 basic operations (+,  ,*,/ ), and an '=' button. Luis pushes a digit followed by the '+' sign, followed by another digit, followed by the '' sign, followed by another
asked by John 
Geometry
ABC is an acute angle triangle with points D and E on BC and AC, respectively such that BE and AD are altitudes. AD and BE intersect at H. If \angle BCA = 39 ^\circ and \angle EBA = 2 \angle DAB , what is the measure of \angle ABC(in degrees)?
asked by John 
Physics
Recently, Asteroid 2012 DA14 came within 34,200 km from the center of the earth at its point of closest approach. If the moon goes around the earth once every 27.5 days, what is the ratio of the distance of closest approach of DA14 to the radius of the
asked by John 
Geometry
In acute triangle ABC, we have \angle CAB = 34 ^\circ . E is the foot of the perpendicular from B to AC. A point H is on BE is chosen, and X is the foot of the perpendicular from H to AB. What is the measure (in degrees) of \angle of EHX?
asked by John 
Chemistry
When silver107 is bombarded with a neutron, a different isotope of silver forms and then undergoes beta decay. What is the final product? (My Hints: Write two separate nuclear equations.)
asked by Michelle 
STATISTICS
I need help with 2 questionsTODAYHELP 8. Assume that the MM207 Student Data Set is a random sample of all Kaplan students; estimate the proportion of all Kaplan students who are male using a 90% level of confidence. 9. Assume you want to estimate with
asked by kathy L 
math
Becky used 5 teaspoons of mustard to make a 32 ounces of potato salad. How many teaspoons of mustard does she she need to make 4 pounds of potato salad?
asked by janiece 
business math
I need to convert 39 mL to ounces. (1 qt.= 32 ounces)
asked by Anonymous 
physics
at what inclination should the object be released from rest if it is to reach a maximum horizontal distance of 2m as shown. coeff of friction is 0.37 for all surfaces of contact.
asked by chen 
math
Two vectors have magnitudes of 3 units and 8 units respectively. The resultant of these two vectors has a magnitude of 8 units. What is the angle between these two vectors?
asked by dave 
Chemistry
What is the percent by mass of glucose in a solution containing .15 mol of glucose dissolved in 410 g acetic acid? The molar mass of glucose is 180g/mol.
asked by Lydia 
Chemistry
Calculate the mass of water that must be added to .45 mol of glucose to make a solution of 15 percent by mass. The molar mass of glucose is 180g/mol
asked by Dal 
Chemistry
Calculate the molarity of Formic acid in a solution containing 44g of Formica acid in 470 g of nitrobenzene. The molar mass of Formica acid is 36g/mol
asked by Noga 
Chemistry
What volume in milliters of calcium chloride stock solution would you use to make .50 L of 3.00 M of CaCl solution?
asked by Sue 
Physics
Suppose you are stopped for a traffic light, and an ambulance approaches you from behind with a speed of 19.0 m/s. The siren on the ambulance produces sound with a frequency of 960 Hz as measured when you are at rest relative to the ambulance. The speed of
asked by Tessa 
math
Hello, I need help to find out why Gustave Eiffel to use the exponential form to build his tower. Thanks for your help.
asked by Usberto 
chemistry
A 12 g sample of Ne is added to a container that also holds .78 mol of helium gas. What is the partial pressure of helium if the total pressure, after mixing is 2.43 atm?
asked by john 
social studies
info on coercive acts intolerable to British colonies and the quebec act it can't be wikipedia
asked by Anonymous 
science
A substance has a mass of 12.5 grams and a volume of 9.8 ml.Will the object sink or float in water?
asked by marshall 
Physics
You hit someone with a force of 197 N. How much force is exerted on you? Answer in units of N
asked by Sally 
math
Write the ratio (18/30)as a fraction in simplest form.
asked by taylor pete 
Math
Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 0.020000 cm thick to a hemispherical dome with a diameter of 40.000 meters. How do I do this?
asked by jonh 
Physics
Suppose that you wish to fabricate a uniform wire out of 1 g of copper. (Resistivity = 1.72*10^8 Ohmm, density = 8.94*10^3kg/m^3). If the wire is to have a resistance of R = 0.5 ohm and all of the copper is to be used, how long is the wire? a. 1765 m b.
asked by John 
Math
Find the number of each kind of object in the collection Miranda has 24 CDs in her collection. Of those CDs, 10 are pop CDs. She has 6 more country CDs than jazz CDs. How many country CDs does Miranda have?
asked by Dee 
Physics
What current is produced by a ring with a radius of 0.5 m and a uniform positive linear charge density of 1 microCoulomb/m rotatingwith an angular frequency of 4π/s? a. 1 microAmpere b. 3.14 microAmpere c. 6.28 microAmpere d. 12.6 microAmpere
asked by John 
World history; Check:P
Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most
asked by Unknown 
analytic geometry helps are appreciated
Find the maximum value of y/x over all real numbers x and y that satisfy (x3)^2+(y3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution??
asked by Knights 
geometry
4. In order to properly design a heating system for a greenhouse, the volume of air in the building needs to be determined. Find the volume of air in the greenhouse below. The length of the building is 40 feet long, the width is 20 feet long, and it is 8
asked by Scott 
Physics
You hit someone with a force of 197 N. How much force is exerted on you? Answer in units of N Is the answer 197 N
asked by Sally 
chemistry
For a certain change, value of Delta U is 2.37 kJ. During the change, the system absorbs 650 joules. How much work did the system do? Please help! I get 3.02 but is not correct!!
asked by Mary 
Urgent
draw an angle x in the 1st quadrant with sinx=3/5, and an angle y in the 2nd quadrant with cosy=12/13, then determine the exact value of tan(x+y).
asked by Anonymous 
please help with analytic geometry if you can
Find the maximum value of y/x over all real numbers x and y that satisfy (x3)^2+(y3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution??
asked by Knights 
ela
Reread these lines from the text, “He was afraid to get up, afraid he might not be able to gain his feet at all, with an anesthetized leg. A numbness in a numbness hollowed into a numbness…” What best expresses the author’s meaning of anesthetized
asked by Donny Berger 
Geometry
Luis has a simple calculator that has buttons for the digits 0 through 9, each of the 4 basic operations (+,  ,*,/ ), and an '=' button. Luis pushes a digit followed by the '+' sign, followed by another digit, followed by the '' sign, followed by another
asked by John 
Physics
1)The Earth exerts an 710 N gravitational force on a man. What force does the man exert on the Earth? Answer in units of N 2)If a book is sitting on a table, the force of gravity pulls it down. Why doesn’t it fall? Is it because The table is pushing up
asked by Sally 
Science
If there was zero change in Earth’s eccentricity, how might that affect the possibility of an ice age?
asked by Jake 
english 3
In the 1920s, there was a boom in? consumerism. religion. world travel I believe it is world travel???
asked by courtney 
Chemisty
Full analysis for calcium
asked by Anonymous 
Calculus AP
Let R be the region in the first quadrant bounded by the graph y=3√x the horizontal line y=1, and the yaxis as shown in the figure to the right. Please show all work. 1. Find the area of R 2. Write but do not evaluate, an integral expression that gives
asked by Jess 
math
Find the slope and the equation of the tangent line to the graph of the function f at the specified point. f(x)=10/3x^2+6x+6; (1, 10/3) slope ?? tangent line y = ?
asked by Kimberly 
calculus
Use the second derivative to determine the point of inflection for y = x3 – x2 – 8x + 12. ????
asked by mike9 
civics
Does anyone know where I can find a list of supreme court cases that includes a provision of the bill of rights. I'm looking for something recent. Thanks.
asked by Anonymous 
calculus
Use the second derivative to determine the point of inflection for y = x3 – x2 – 8x + 12. ????
asked by tim2222 
math
Suppose that a ball has a rebound percentage of 75 and the ball is dropped from a height of 5ft onto the concrete below. Make a table of the data. Write a recursive rule for the data. Write a closedform function rule for the data. What would the height of
asked by Lola 
math
Find the derivative of the function f by using the rules of differentiation. f(x)=7x^4/32/3x^3/2+2x^25x+1 f '(x) = ??
asked by Kimberly 
algebra
If the pattern of polygons continues, which polygon will have 12 sides?
asked by Anonymous 
Physics
A 0.4kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 1.3 m on a frictionless horizontal surface. If the cord will break when the tension in it exceeds 65 N, what is the maximum rpm(revolution per minute) the ball can
asked by Derrick 
chemistry
What is the pH of the solution in which 241 mL of HCl gas measured at 28.0°C and 1.02 atm is dissolved in 1.5 L of aqueous solution
asked by Anonymous 
math
suppose that 12 inches if wire cost 60 cent at the same rate how much in cents will 23 inches of wire cost
asked by Anonymous 
Chemistry
A certain reaction has an activation energy of 25.65 kJ/mol. At what Kelvin temperature will the reaction proceed 5.50 times faster than it did at 291 K?
asked by Ryan 
American Goverment
What European country was England's primary rival in North America? In which colonies did the citizens have the most power over their own affairs? About how long after the conflict between Britain and the colonies broke into open warfare was the
asked by Annie 
biology
Apply the concept of RESPIRATION. What happens inside of a human being when he or she eats various foods? During Respiration, is the energy in the food converted into heat, or into some other chemical (name the chemical!)
asked by roger 
biology
Apply the Law of Conservation of Energy to food. Trace the energy from its beginning point, to the point where it was stored or used.
asked by roger 
biology
Think of diets from an energy perspective. Where is the energy coming from, and how many organisms does it move through before it gets to the human? In what form is most of the energy in when it gets to the human, and how is that energy unleashed by the
asked by roger 
Physics
Superman, who likes physics, dangles his watch from a thin piece of string while he is taking off from ground horizontally at a constant acceleration a. He notices that the string makes an angle of θ with respect to the vertical. After 18 seconds, his
asked by Derrick 
english
Trust in the Lord with all of your heart.Do not depend on your own understading.
asked by monique 
Math Ms. Sue please
Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. 324 cm^3 108 cm^3 36 cm^3 152 cm^3 Is the answer 152?
asked by Delilah 
physics
if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on
asked by edward 
physics
if the angular speed of earth becomes 17times its present value what will be the 1.effect on a body on the equator of earth? it will be A. Heavier than present value B.lighter than present value C.weightless And also what is the reason? 2.a girl sitting on
asked by edward 
math
in a set of number rods,there is one rod of length 10,2 rods of length 9,3 of length 8,and so on.If all these rods were laid end to end in one line,how long would the line be ?
asked by sarah 
math
how to put x + 1/5y = 6 into function form (mx + b).
asked by Anonymous 
Math Please Help!!
Find the slope and the equation of the tangent line to the graph of the function f at the specified point. f(x)=10/3x^2+6x+6; (1, 10/3) slope ?? tangent line y = ?
asked by Kimberly 
Math 8  HELP!!!!!!!
If there was 180 days of school and you have Health on A days and Gym on B days. How many days will you have health? please help!
asked by Laruen 
math
a taut wire of length 'W'emits a single note when plucked.if it were half as long it woould emit the same note but one octave higher.How long should the same wire be to emit the same note but one octave lower ?
asked by sarah 
simplify
v^4u^5 over v^3 u^6
asked by Anonymous 
math
in the number 0.123451234512345.........(recurring)what is the 1992th digit after the decimal point?
asked by sarah 
statistics
#1: Total students 237, total males 41, need to estimate the proportion of students that are male using 90% confidece level. Also #2: estimate the proportion of students that commute less than 5 miles to work within 2% , what sample size would you need.
asked by kathy l 
math
the experimental probability that a kicker will make a field goal is 90%. What is the Probability that the kicker will make his next 2 attempted field goals?
asked by Anonymous 
algebra
Solve. x/91/7=26/63 STEP 1: The LCM is _________ To clear denominators, multiply each side of the equation by the LCM. _______/1 (x/91/7)=__________/1 multiply 26/63. STEP 2: Use the Distributive Property. _____/1 multiply x/9  _________/1 multiply 1/7
asked by sally 
analytic geometry helps are appreciated
Find the maximum value of y/x over all real numbers x and y that satisfy (x3)^2+(y3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution?? No one has answered this question yet.
asked by Knights 
Math
Find the derivative of the function f by using the rules of differentiation. f(u)=10/ãu f '(u) = ??
asked by Ashton 
Chem Problem
I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium
asked by Student 
math
Find the derivative of the function f by using the rules of differentiation. f(x)=7x^4/32/3x^3/2+2x^25x+1 f '(x) = ??
asked by Ashton 
statistics
A residential treatment facility tests a new group therapy for patients with self destructive behaviors. To decrease scores of behaviors that has a mean in the overall population of 35 and a standard deviation of 4.7. The mean score for patients after new
asked by marty 
Chemistry
What is the complete and net ionic equations for: Cu+Zn+2HCl> ZnCl2+Cu+h2
asked by Mike 
US History
What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee
asked by Max 
US History
What was the goal of manifest destiny? to expand America's borders to remove Native Americans to create an alliance with Mexico to move settlers west beyond the Appalachians
asked by Max 
chemistry
what minimum mass of copper ii nitrate must be added to 70 ml of a .0594 M phosphate solution in order to completely precipitate all the phosphate as solid copper ii phosphate. 2PO4^3+3Cu(NO3)2>Cu3(PO4)2+6NO3^1 I can not come up with the correct answer
asked by Raul 
Algebra
The length of a rectangular rug is twice its width. The rug is centered in a rectangular room. Each edge is 3ft. From the nearest wall. What is the area of the room?
asked by Naibe 
physics
the coefficient of friction between a block of weight 15N and a horizontal board on which it is resting is 3.0find the horizontal force which will just remove the block and the force acting at an angle of 30 with the horizontal which will just move the
asked by jane 
Math
formulate but do not solve the linear programming problem. Tracy has at most $200,000 to invest in stocks,bonds, and moneymarket funds. She expects anual yields of 15%, 10%, and 8%, respectively, on these investments. If Tracy wants at least $50,000 to be
asked by Stacy 
Algebra
The length of a rectangular rug is twice its width. The rug is centered in a rectangular room. Each edge is 3ft. From the nearest wall. What is the area of the room?
asked by Naibe 
HI
(b) At what point (apart from x=∞), is E(x)=0? Express your answer in meters.
asked by NABIL 
MAT116
An investor invested a total of $3,400 in two mutual funds. One fund earned 8% profit while the other earned a 3% profit. If the investor's total profit was $202, how much was invested in each mutual fund?
asked by Anonymous 
Chem Problem
I need help solving this question, I have no idea what I'm supposed to do. What is the minimum pressure in kPa that must be applied at 25 °C to obtain pure water by reverse osmosis from water that is 0.165 M in sodium chloride and 0.029 M in magnesium
asked by Student 
Math...I think...
A building casts a shadow 54 feet long at the same time a 6 foot tall man casts a shadow 4 feet long. How tall is the tree?
asked by Sara 
math
Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March
asked by Anonymous 
Statistics
2. (TCO 5) A company produces electronic equipments claims that 98% of their products never need any kind of maintenance. We selected 10 of their products and we wanted to know the probability that 8 of them never need maintenance. Choose the best answer
asked by JAR 
Devry
1. You are part of a team given the task of designing an application to determine a students letter grade for a short course. The application will process a quiz, a project, a midterm exam and a final exam to determine the total score. The result of
asked by Sab 
chemistry
At 0*C a 1.0L flask contains 5.0 x 10^2 mol N2, 1.5 x 10^2 mg O2, and 5.0 x 10^21 molecules of NH3. What is the partial pressure of each gas, and what is the total pressure in the flask?
asked by Brittany 
ECONOMICS
Data Collected in the imaginary econmomy of Chipolaysia reveals that when the price of dorf decreased by 25%, the quantity of dorf sold increased by 10%, and the quanity of goo demanded decreased by 30%. What is the crossprice of demand between go and
asked by Anonymous 
physics
Suppose that the pressure of an ideal gas mixture remains constant at 1700 Pa (1 Pa = 1 N/m2) and the temperature is increased from 400K to 800K. How much work does the gas do to the surroundings during expansion?
asked by Angela 
Biology
Why mitochondrion and mitotic division are absent in prokaryotic cells?
asked by Mengistu 
World history; Check:P Added sentences.
Write a one paragraph essay on how developments in technology influenced the rise and decline of the Assyrian Empire. The Assyrians were the first to use iron in their weapon works. They used it in spears, swords, shields and armor. They had the most
asked by Unknown 
Biology
Why mitochondrion and mitotic division are absent in prokaryotic cells?
asked by Mengistu 
physics
Help me solve this physics homework: in sense we all have kinetic energy,even when we are standing still.the earth with a radius of 6.37*10power6 m,rotates about its axis once a day.ignoring the earths rotation about the sun,what is the K.E of a 50Kg man
asked by ruru mq 
Astronomy
The majory of galaxies (by number) are:  barred spirals  giant ellipticals  lenticulars  dwarfs
asked by qwerty 
Astronomy
Which type of emission closely traces the starforming regions of a galaxy?  molecular CO emission  coronal Xray emission  21 cm emission  none of these
asked by qwerty 
math
How do I find this integral using weierstrass substitution? 1/94((sinx)^2)
asked by Zach 
Chemsitry
When 3.75 g of a nonelectrolyte solute is dissolved in 405 mL of water at 25 °C, the resulting solution exerts an osmotic pressure of 897 torr. What is molarity? I found molarity to be 0.048. What is the number of moles of solute? to find moles, I
asked by Anonymous 
business
Suppose you are opening a 1,000squarefoot baseball card store. Your lease calls for a flat monthly rent of $1.75 per square foot plus 5 percent of your gross annual sales. What is the total rent you will pay in one year if you have sales of $85,000?
asked by jing 
English
11. Absurdism is the attempt to show the absurdity of the human condition. • true
asked by Danii 
QSO 51O
Problem 4: Module 8 (30 points) The Exeter Company produces two basic types of dog toys. Two resources are crucial to the output of the toys: assembling hours and packaging hours. Further, only a limited quantity of type 1 toy can be sold. The linear
asked by Anonymous 
Calculus
I am having trouble solving this problem: "Find where the tangent line is horizontal for r=1+cos(theta)" I would really appreciate the feedback, I'd like to know how to go about solving problems like these. Thank you!
asked by Anonymous 
science
1. Boyle’s law states that if you squeeze a fixed amount of a gas into a smaller volume, the pressure will increase. Explain why in your own words.
asked by alex 
algebra
A parabolic microphone has a crosssection in the shape of a parabola. The microphone is placed at the focus of the parabola. If the parabola is 20 inches wide and 5 inches deep, how far from the vertex should the microphone be placed? Can someone please
asked by lee 
science
3. Atmospheric pressure at the top of Mt. Everest is about 150 mm Hg. That is why climbers always bring oxygen tanks. If a climber carries a 12.0 liter tank with a pressure of 35,000 mm Hg, what volume will the gas occupy if it is released at the top of
asked by alex 
English
Revising and Editing It is not only quick and easy to make but it also tastes good and is fun to eat. What changes should be made in this sentence? Insert a comma after make? Change good to well? or insert a comma after fun?
asked by jared 
algebra
Write an equation for the translation of x^2+y^2=25, by 8 units left and 4 units down. Please help.
asked by lee 
English
A Works Cited is a list of sources used in your research; a bibliography is a list of sources referenced during your research. • true
asked by Danii 
algebra
An ellipse has foci (0,+3) and vertices (0,+4). What is the eccentricity of the ellipse? Please help.
asked by lee 
Chemistry
Given the rate equation... RATE = ([ Na2S2O3]/time) = k [I]a [BrO3]b [HCl]c 1A) You mix together in the proper manner the following: 10.0 mL of .0100 M Potassium Iodide 10.0 mL of .00100 M Sodium thiosulfate 10.0 mL of water 10.0 mL of .0400 M Potassium
asked by Cassie 
algebra
How far apart are the foci of an ellipse with a major axis of 26 feet and a minor axis of 24 feet?
asked by lee 
algebra
Skip designs tracks for amusement parks. For a new design the track will be ellipitical if the ellipse is placed on a large coordinate grid with its center at (0,0) the equation x^2/2500+y^2/8100=1 model the path of the park.The units are given in yards,
asked by lee 
math
a memo cube is1 cubic unit. christine packs 6 memo cubes into a box. there is room in the box for 8 more cubes.what is the volume of the box?
asked by unsure 
chemistry
Which compound would you expect to have the highest melting point? BeO MgO CaO SrO
asked by s 
Physics
train car with mass m1 = 521 kg is moving to the right with a speed of v1 = 7.9 m/s and collides with a second train car. The two cars latch together during the collision and then move off to the right at vf = 5.1 m/s. 1)What is the initial momentum of the
asked by John 
Math
Muna and Rita had 360 seashells. Muna gave 4/7 of her seashells to Rita. In return, Rita gave 2/5 of her total number of seashells to Muna. They then had an equal number of seashells each. How many seashells did each of them have at first?
asked by Ashley 
physics
What is the orbital radius and speed of a synchronous satellite which orbits the earth once every 24h?
asked by ayoola 
Geometry
Danny has a 15foot board that he wants to use as a motorcycle ramp.If he wants the end of the ramp to be 4 ft off the ground,what angle will be formed between the board and the ground?
asked by Vball 
math
Calculate the are of triangular crosssection and also its volume.
asked by monty 
Maths
How many ordered triples of positive integers (a,b,c) with 1
asked by Don 
English
Be careful not to overdue the hot spices! What changes should be made? change overdue to overdo insert comma after hot change exclamtion point to a question mark?
asked by jared 
physics
bluegreen light has a frequency of about 6X10 to the fourth Hz. use the relationship c=fl to find the wavelength of this light in air. how does this wavelength compare with the size of the atom, which is about 10 is to ten?
asked by yusoph 
BIOLOGY
The gastrointestinal phase of gastric secretion:? a. is controlled by the entrance of acidic chyme into the duodenum. b. leads to increased gastric secretion if duodenal pH falls below 2. c. only stimulates gastric secretion. d. will decrease gastric
asked by sarah 
Food and nutrition
Examples of unhealthy foods
asked by Baaba 
StatIstics
"Household size" is defined as the number of people living in a household. In a sample of 1200 households in California in 2010, the average household size was 2.9 people. Which of the following conclusions can be drawn from this information? Select all
asked by A 
Statistics
A real estate company is selling 32 houses. One of the houses costs $834,000, but in order to attract more buyers, the price is dropped to $819,000. By how much does this change the average price of the 32 houses?
asked by A 
science
Which of the following is true about an object that floats in water? (1 point) The object is less dense than frozen water. The mass of the object is less than that of water. The density of the object is less than that of water. The volume of the water is
asked by kristin 
math
construct a triangle xyz in which angel y=45 and angel z =30. Also xy yz zx =10 cm.
asked by zetlang 
Health
What should I do? I constantly have suicidal thoughts...
asked by Jordyn 
Cosmology
Which of the following statements is not true of spiral arms: they tend to trail the rotation of the galaxy they are sites of star formation they are amplified by resonances between the epicyclic frequencies of stars and the angular frequency of the spiral
asked by C 
Cosmology
Which type of emission closely traces the starforming regions of a galaxy? none of these coronal Xray emission 21 cm emission molecular CO emission
asked by C 
Cosmology
The Hubble sequence is useful for distinguishing galaxies on the basis of many properties. Which of these does not correlate well with Hubble type? stellar age dust content luminosity color
asked by C 
Cosmology
Which of the following is evidence that the evolution of disk galaxies can be greatly affected by their large scale environment? Comparison of emissions from elliptical galaxies in xray and optical bands Hydrogen gas deficiency in spiral galaxies near
asked by C 
Cosmology
magine you look through a really strong telescope and see a rich cluster. Your telescope is so good that you can see a single galaxy at the center of the cluster. What can you say about that galaxy and be pretty confident that you are correct? It has mass
asked by C 
Cosmolgy
Which of these is the correct relationship between b, the bias factor, the fluctuations in mass (Δρ/ρ)mass and the fluctuations in light (Δρ/ρ)light? b2(Δρ/ρ)light = (Δρ/ρ)mass−1 (Δρ/ρ)light (Δρ/ρ)mass=b (Δρ/ρ)light=b(Δρ/ρ)mass
asked by C 
Cosmology
What explains the observation that galaxy clustering is stronger at higher redshifts, which is an apparent reversal of the trend out to about z ~ 1? It is difficult to measure peculiar velocities Rich clusters have more galaxies than poor clusters Density
asked by C 
Physical Science
ok so i keep getting one wrong on a 4 question test and failing so can someone tell me what im getting wrong 1. What causes an electric current in a wire? A. Electric fields cause atoms to move in the wire. B. Electrons flow because of electrical
asked by s 
Statistics
A firm has 82 employees. The average commute distance (that is, the travel distance from home to work) of the employees is 6.2 miles. How many employees have a commute distance of less than 15.5 miles? Select all that are correct. more than 25 more than 35
asked by A 
math
There is a circular garden in the middle of a square yard. The radius of the circle is 4x. The side length of the yard is 20x. What is the area of the part of the yard that is not covered by the circle?
asked by Jane 
homefield
There are 9 tennis balls in a box, of which only 5 have not previously been used. Four of the balls are randomly chosen from the box. Let be the number of new balls among the selected ones. (a) Find the probability distribution of : (b) Evaluate the
asked by osman 
chemistry
A 115 g piece of metal, initially at 60.0 °C, is submerged into 100.0 g of water at 25.0 °C. At thermal equilibrium, this mixture had a final temperature of 27.0 °C. The specific heat capacity of water is 4.18 (J/g°C). Use this information to determine
asked by Brandi 
MSITA
What part of the formula is entered directly as a value? constant. case. argument. operator.
asked by Anonymous 
IB Chemistry
Why don't we use the bomb calorimeter to calculate the heat energy in the combustion of alcohol but we use the copper cup calorimeter?
asked by chirikamo 
DVC
use the inverse square law to show that in space shuttle territory, 200 kilometers above 94 percent of that at earths surface??
asked by Anonymous 
physics
An idealized voltmeter is connected across the terminals of a 15.0 battery, and a 72.5 appliance is also connected across its terminals. If the voltmeter reads 11.0 .
asked by Anonymous 
analytic geometry helps are appreciated
For some positive real number r , the line x+y=r is tangent to the circle x^2+y^2 = r. Find r. How do we do this? Set equal equations together??
asked by Knights 
math
A woman 5ft 6in tall stands so that the tip of her shadow coincides with the tip of the shadow of a tall tree. The woman stands 18 ft from the tip of her shadow and 100 ft from the base of the tree. How tall is the tree?
asked by Tiffany 
Math
What are the odds in winning in a roulette if I bet on an exact number chosen from 37 numbers in all?
asked by Therese 
statistics
I am seeing some inconsistencies with regards to finding the upper and lower quartiles when you you have an odd number in your data set. Which is correct, counting the median in both your upper and lower set, or ignoring it?
asked by Terri