
chemisrty
please could you tell me how i would draw an hydrogen atom which has only one electron and describe why it has so many spectral lines, I have studied my text books but cant seem to figure it out, many thanks in advance
asked by bex on March 2, 2007 
statistics
To find out what people think, the Gallup Poll selected a random sample of 520 women and 506 men. The pollsters showed them a list of personal attributes and asked them to indicate whether each attribute was “generally more true of men or of women”.
asked by Devin on June 27, 2014 
physics
1.In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.56 x 10*17 N during the first 1.87 cm of tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen.
asked by Sandhya on September 24, 2008 
GRADE 12 APPLIED MATH
The Problem: Zared plays basketball on his high school team. One of the things he needs to practice is his free throws. On his first shot, there is a probability of 0.6 that he will make the basket. If he makes a basket, his confidence grows and the
asked by V on January 27, 2018 
Physics (mechanics)
A ucontrol airplane of mass m is attached by control wires of length L and negligible mass to the "pilot" who controls the lift provided by the wing FL. The wires control the plane's elevator or angle of attack. The plane's engine keeps it moving at
asked by JK on July 9, 2013 
physics
The siren on an ambulance is emitting a sound whose frequency is 2421 Hz. The speed of sound is 343 m/s. (a) If the ambulance is stationary and you (the "observer") are sitting in a parked car, what are the wavelength and the frequency of the sound you
asked by carter montgomery on January 29, 2013 
Math
Anne now has a balance of $900 on her credit card, on which 1.5% interest per month is charged. Assume that she makes no further purchases or payments (and that the credit card company doesn't turn her account over to a bill collector). (a) Find the rule
asked by Anonymous on November 6, 2010 
chemistry
Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol
asked by jess on May 27, 2016 
algebra
maria and tim sold candy bars for a fundraiser.maria sold 7 less than twice the number of candy bars that tim sold.in total maria and tim sold 137 candy bars.find the amount of candy bars sold by each
asked by traina on September 23, 2015 
physics
A 1200.0kg car is moving east at 30.0 m/s and collides with a 3600.0 kg truck moving at 20 m/s in a direction 60 degrees north of east.The vehicles interlock and move off together.Find their common velocity. Use the law of conservation of momentum. The
asked by fluffy on September 23, 2006 
Geometry
I need help on these two. Consider tirangles ABC and DEF. Side A is congruent to side F. Angle A is congruent to angle F. Angle B is congruent to angle E. What postulate or theorem can be used to prove that the two triangles are congruent? If angle1 and
asked by Amy on August 21, 2006 
percentage
35%of the number of books Vick owns are fiction books.if Vick has 70 fiction books,find: A) the total numbe of books he owns. B) the number of nonfiction books he owns
asked by Kimi on February 20, 2012 
physics
Velocity and displacement with uniform acceleration: 1. A car with an initial speed of 23.7 km/h accelerates at a uniform rate of 0.92 m/s^2 for 3.6 s. Find the final speed and the displacement of the car during this time. The final speed is 36 km/h. is
asked by anonymous on September 25, 2006 
Math
Janice and Patricia each want to buy a new DVD player. They go to the Hot Electronics and find a DVD player for $75. Hot Electronics offers a different payment plan. Janice is going to pay $15 now, and then $7.50 per month. Patricia is going to pay $12.50
asked by Jerald on November 11, 2013 
Math
a business firm has made an analysis of its production facilities and its production facilities and its personnel. with the present equipment and number of workers, the firm can produce 3, 000 units per day. it was estimated that without any change in
asked by Jai on September 25, 2018 
Physics Help please
The freefall acceleration on Mars is 3.7 m/s2. (a) What length pendulum has a period of 4 s on the earth? cm What length pendulum would have a 4 s period on Mars? cm (b) A mass is suspended from a spring with force constant 10 N/m. Find the mass suspended
asked by Anonymous on December 6, 2010 
physics
A crate slides down an incline right angled trough. The coefficient of kinetic friction between the crate and the trought is mew_k(not sure if i spelt it right). What is the acceleration of the crate in terms of mew_k theda and g? I think I need to use
asked by Brian on November 28, 2006 
math
hi, one question i have is for the following problem:"Two families meet at a park for a picnic. At the end of the day, they part ways. Family A leaves 15 mins after family B and travels east at an average speed of 42mph; while, family b travels west at an
asked by George on September 10, 2017 
Trigonometic
Solving Trigonometic Equations solve for x : 1)sinx = (4/5) 2) cosx = (12/13) I will do the second one. first of all since the cosine is negative the angle must be in either the second or third quadrants. To find the "angle in standard position" take
asked by abdo on April 23, 2007 
statistics
Do you want to own your own candy store? Wow! With some interest in running your own business and a decent credit rating, you can probably get a bank loan on startup costs for franchises such as Candy Express, The Fudge Company, Karmel Corn, and Rocky
asked by Anonymous on December 2, 2012 
math
Hello! I came across the following two problems that appear easy but I was not able to construct the needed equations. (1) The profit (in thousand of dollars) on x thousand units of a specialty item is p = 0.6x  14.5. The cost c of manufactoring x
asked by guitarman on March 29, 2010 
math/algebra
I need help in solving this word problem using linear system equation...I.m not sure how to start,,, A hotel rents a double occupanch room for $20 more than a single occupancy room. One night, the hotel took in $3115 after renting 15 double occupancy rooms
asked by JAY10 on March 12, 2009 
Geometry
The measure of an angle's supplement is 76 less than the measure of the angle. Find the measure of the angle and its supplement.
asked by Michaela on August 22, 2011 
Math
The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and it's supplement.
asked by Nicole on September 4, 2012 
math 4th Grade
a dictionary and a calculator cost $80. If the calculator cost $20 more than the dictionary, find the cost of the dictionary.
asked by marsha on January 29, 2013 
geometry
The measure of an angle's supplement is 76 less than the measure of the angle. Find the measure of the angle and its supplement.
asked by Kharybdis on August 23, 2011 
geometry again again
The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and its supplement.
asked by Monique N. on September 27, 2009 
algebra
find the yintercept and the slope x + 2y 3 =0 You first have to get this into slopeintercept form: 2y=x+3 y=0.5x+1.5 This form is y=mx+b, where m is the slope and b is the yintercept.
asked by dee on January 23, 2007 
geometry
The measure of an angle's supplement is 44 less than the measure of the angle. Find the measure of the angle and its supplement.
asked by trey on August 27, 2009 
Physics
In 2286, Admiral Kirk and his crew were forced to use the slingshot effect in a stolen Klingon BirdofPrey to travel back in time to the late 20th century to retrieve two humpback whales. The stolen Klingon BirdofPrey traveled towards the sun at a
asked by Carolyn on March 19, 2015 
Physics
In 2286, Admiral Kirk and his crew were forced to use the slingshot effect in a stolen Klingon BirdofPrey to travel back in time to the late 20th century to retrieve two humpback whales. The stolen Klingon BirdofPrey traveled towards the sun at a
asked by carolyn on March 23, 2015 
physics
The range of human hearing is roughly from twenty hertz to twenty kilohertz. Based on these limits and a value of 350 m/s for the speed of sound, what are the lengths of the longest and shortest pipes (open at both ends and producing sound at their
asked by Cavin on April 28, 2007 
Chemistry
When solid magnesium nitride reacts with water the reaction produces solid magnesium hydroxide and ammonia gas. If 22.9 grams of magnesium nitride are added to 31.0 grams of water, how many liters of ammonia should be produced (assuming standard
asked by Jay on September 14, 2017 
spanish
Your family wants your help to do an inventory of the many appliances that have accumulated over the years. Include the following years. include the information: the various appliances that you find in your house (at least 5) where each one is located
asked by y912f on May 9, 2009 
science/literature
Hi. I have to pick a book by Edward Abbey to read. Then I have to write a paper that covers: what Ed was trying to accomplish with this piece whether or not he accomplished his goal what you think about his goals (good, bad????) I was wondering if
asked by Lillian on July 1, 2007 
English 9
Find adv. and word it modifies He courageously continued not only to compose but also to conduct performances. courageously(adv)modifies continued not (adv) modifies Only? only(adv) modifies continued? also (adv) modifies conduct?
asked by Sweet Pea on September 13, 2014 
Anatomy & Physiology
Someone please check my answer and tell me if they are right or wrong. 1. What are the constituents of DNA? A. Sugars and lipids B. Proteins and sugars C. Sugars, phosphates, and nitrogenous bases D. Lipids, nitrogenous bases, and proteins 2. What is the
asked by Diana K on January 23, 2014 
math
The probability that a team will carry the puck over the opposing team's blue line is 0.6, the probability that they get a shot on the net is 0.3, the probability that they get a shot away and score is 0.01 and the probability that they cross the blue line
asked by Jessica on May 10, 2012 
Math
The number of diagonals D I a polygon of n sides is given in the formula D=n(n3)/2. Use the formula to find: A. The number of diagonals in a polygon with 9 sides. B. The number of sides of a polygon with 90 diafonals.
asked by Raven on November 23, 2016 
maths
the length of rectangle is x cm .the width of the rectangle is 4cm less than the length. A. write an expression in terms of x for the width of the rectangle B. write the expression for the perimeter of the rectangle in terms of x C. the perimeter of the
asked by batool on August 29, 2016 
Grade 5 Maths
A coin box contained some twentycent and fiftycent coins in the ratio 4:3. After 20 twentycent coins were taken out to exchange for fiftycents coins of the same value and put back in the box, the ratio of the number of twentycent coins to the number
asked by LARA on January 19, 2014 
Math
If exactly 198 people sign up for a charter flight, Leisure World Travel Agency charges $308/person. However, if more than 198 people sign up for the flight (assume this is the case), then each fare is reduced by $1 for each additional person. Hint: Let x
asked by Renee on November 14, 2012 
math
If exactly 198 people sign up for a charter flight, Leisure World Travel Agency charges $308/person. However, if more than 198 people sign up for the flight (assume this is the case), then each fare is reduced by $1 for each additional person. Hint: Let x
asked by tamera on November 16, 2012 
math
If exactly 198 people sign up for a charter flight, Leisure World Travel Agency charges $308/person. However, if more than 198 people sign up for the flight (assume this is the case), then each fare is reduced by $1 for each additional person. Hint: Let x
asked by Ashley on November 15, 2012 
managerial economics
A firm uses a single plant with costs C= 160 +16Q +.1Q2 and faces the price equation P= 96 – .4Q. a) Find the firm’s profitmaximizing price and quantity. What is the profit? b) The firm’s production manager claims that the firm’s average cost of
asked by J on April 11, 2010 
Medical physics
1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^7m^2 s1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure
asked by JAMES on March 28, 2015 
Economics
A firm uses a single plant with costs C = 160 + 16Q + .1Q2 and faces the price equation P = 96  .4Q. a. Find the firm’s profitmaximizing price and quantity. What is its profit? b. The firm’s production manager claims that the firm’s average cost of
asked by Philip on October 14, 2012 
ECONOMICS
A firm uses a single plant with costs C= 160 +16Q +.1Q2 and faces the price equation P= 96 – .4Q. a) Find the firm’s profitmaximizing price and quantity. What is the profit? b) The firm’s production manager claims that the firm’s average cost of
asked by STARR on May 15, 2010 
Medical physics
1.A hypodermic needle of lenght 0.020m and inner radius 3.0 x10^4 is used to force water at 20 degree celcious into the air at a flow rate of 1.0 x10^7m^2 s1 (a) what is the average velocity in the needle?(assume laminar flow), (b) what is the pressure
asked by JAMES on March 28, 2015 
physics
The vector position of a particle varies in time according to the expression r with arrow = 6.60 i − 9.00t2 j where r with arrow is in meters and t is in seconds. (a) Find an expression for the velocity of the particle as a function of time. (Use any
asked by Mohammed on February 6, 2016 
math
1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: , where
asked by tera on April 8, 2009 
Statistics
A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a
asked by stat on October 6, 2009 
Maths
The weight of a termite mound (y) in kilograms is measured each month (x) after it was first found. The mound after 1 month is found to be 2 kilograms and after 3 months it is measured at 18 kilograms. It is believed that the model connecting the weight of
asked by TP on April 14, 2008 
Statistics
A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a
asked by jig on October 8, 2009 
statistics
A school counselor tests the level of depression in fourth graders in a particular class of 20 students. The counselor wants to know whether the kind of students in this class differs from that of fourth graders in general at her school. On the test, a
asked by stat on October 5, 2009 
MATH HELP ASAP
PLEASE. 1. A frog jumps from a rock to the shore of a pond. Its path is given by the equation y=(5/72)x^2+(5/3)x, where x is the horizontal distance in inches, and y is the height in inches. What is the frog's maximum height? How far had it traveled
asked by Leslie on July 13, 2010 
Physics
Hello recently I was asked to find the time it takes a satalite that is geocentric (that always stays above the same exact spot of the earth) so... I was given the radius of 61 earth radius or simply 3.89 E 6 m mass of earth what G equals and have to use
asked by Physics on May 7, 2009 
math
what is the answer to this question? The week before a big concert, five friends, alvin, bert, chip, dennis and ethan, stood in line to buy tickets. There were other people between them, but the five friends were in lin in the order listed above. the line
asked by jw on April 28, 2010 
math
what is the answer to this question? The week before a big concert, five friends, alvin, bert, chip, dennis and ethan, stood in line to buy tickets. There were other people between them, but the five friends were in lin in the order listed above. the line
asked by ursie on April 28, 2010 
English
2 Danielle reached into her bag. She was looking for her wallet. Which sentence best combines the two sentences using a participle phrase ? A) Looking for her wallet Danielle reached into her bag. B) Dannielle looking for her wallet reached into her bag.
asked by melanie Esperanza on May 15, 2019 
Question About Math
Hello! I have two math questions: 1.) Marcos has 28 coins that are all nickels (n) and dimes (d). The value of the coins is $2.05. Which system of equations can be used to find the number of nickels and the number the dimes? A. n + d = 28 5n + 10d = 205 B.
asked by Abby on November 17, 2013 
English
Could you please check these sentences for me, please? Thank you. 1) This morning we met an American couple living in Munik. They had an eightyearold girl and were very friendly to us. 2) Their daughter does the same ski group course as our son (also she
asked by Henry2 on December 30, 2011 
physics please help
How many grams of carbohydrate does a person of mass 75 kg need to metabolize to climb five flights of stairs (15 m height increase)? Each gram of carbohydrate provides 17.6 kJ of energy. Assume 10.0% efficiency—that is, 10.0% of the available chemical
asked by Nasir on June 11, 2012 
Economics Quick Question
I'm going to type part of this passage and you have to fill in the blank. Could you check my answer here are the words that may go in that blank. elasticity shortage equilibrium price supply productivity surplus profit techonology Passage: Let's start with
asked by Taylor on May 11, 2009 
Probability
The probability of getting a royal flush when you deal out a five card hand is 1.54 × 10^6. Suppose you deal out 8 × 10^6 hands, what is the probability that you will get 0 royal flushes? Make a list of the probabilities that you will get n royal
asked by Beena on June 29, 2007 
calculus
"superman is in level flight 6 miles above ground. his flight plan takes him directly over whs high school. how fast is he flying when the distance between him and the whs high school is exactly 10 miles and the rate is increasing 40mph?" i keep getting: r
asked by eric on January 25, 2014 
calculus
Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height meters and the diameter at the top is meters. If the water level is
asked by neil on October 5, 2011 
11th grade maths
A.give an example of a function whose domain is {3,4,7,9}? and whose range is {1,0,3} B.Find two different functions whose domain is {3,8}and whose range is {4,1} C Explain why there does not exist a function whose domain is {1,0,3} and whose range is
asked by fatima on September 17, 2012 
Math
Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height meters and the diameter at the top is meters. If the water level is
asked by Salman on October 15, 2009 
Calculus
Water is leaking out of an inverted conical tank at a rate of cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height meters and the diameter at the top is meters. If the water level is
asked by Riley on October 21, 2011 
math
in an album, the ratio of the number of local stamps to the number of foreign stamps was 7 : 4. When Lucy gave away 8 local stamps and 8 foreign stamps, there were 1.8 as many local stamps as foreign stamps in the album. find the total number of stamps
asked by Vivian on March 5, 2014 
algerbra
Pick a country of your choice that is experiencing population growth. Using the Library, web resources, and/or other materials to find the most recent population count of the country you have chosen and the population growth rate of that country. Use that
asked by HELP on October 26, 2007 
algebra
Minute hand of a clock is 10 inches long. how far does the tip of the minute hand move in 15 seconds? I got that=5 pi BUT What speed is it moving in miles/hr???? algebra  PsyDAG, Sunday, November 13, 2011 at 1:38am Assuming it does move 5 pi, convert 5 *
asked by Angela on November 13, 2011 
Physics
An astronaut has crash landed on a planet that little is known about (not even the acceleration due to gravity). She must descend a steeo cliff to find shelter, but wants to know how high the cliff is before making the attempts. She happens to have
asked by Alberto on October 3, 2011 
geo area & volume
ok it asks me 2 find the lateral area of the cylinder ( the radius is 5 n the hight is 5) can some 1 help me with this please 392.5 Prinness, I think that 392.5 is pi*r^2*h, or the volume of the cylinder. This question asks for the lateral area. Lateral
asked by martha on March 1, 2007 
Decaf Coffee
Is decaf coffee completely decaffinated?? .. or are there low amounts of caffiene in brewed decaf coffee? (i'm researching about people with health conditions concerning caffiene... if they even should be drinking decaf coffee at all!!)  can anyone find
asked by TechnoBoi11 on February 14, 2007 
Algebra Assignment
Please check my work on this part of the assignment. Medical xrays, with a wavelength of about 10^10m, can penetrate completely through your skin. a. ultraviolet rays, which cause sun burn by penetrating only the top level of skin, have a wavelength
asked by Anonymous on January 29, 2014 
History
How do most experts think the first people came to North America? A. By walking across a land bridge between Asia and North B. By sailing from Europe 👈🏾👈🏾👈🏾 C. By sailing from Japan D.Humans were always in North America Which region
asked by Helen Doe🤷🏽♀️🤔✏📝 on August 12, 2019 
Basic Algebra
A new cruise ship line has just launched 3 new ships: the Pacific Paradise, The caribbean paradise, and the mediterranean paradise. The carribean paradise has 32 more deluxe stateroooms than the pacific paradise. The Mediterranean paradise has 37 few
asked by Catherine on July 16, 2011 
Creative Writing
I have to do this assignment but I don't understand what I need to do can someone please help me please.I chose Earthmoving Imaginative by Earthmoving malediction but confuse still or Choose either "At Navajo Monument Valley Tribal School" or "Earthmoving
asked by Anonymous on July 4, 2009 
Biology
Im stumped... These answers I cannot find, please and thank you :) 1) In males, the primary target of FSH is the ______. 2)Testosterone and other androgens are secreted by the______. 3)During meiosis, when synapsis occurs, corresponding maternal and
asked by Elise on April 12, 2014 
math
w2+1/64 In my Adv. Math class my teacher shaded in my to dark to I can't see the height. Can you give me a formula to find the height of a triangle? Jennifer, I don't know what you are asking. Please repost with more information. Thanks for asking.
asked by jennifer on April 11, 2007 
CHEMISTRY!!!!!!!!!!
Styrene is produced by catalytic dehydrogenation of ethyl benzene at high temperature in the presence of superheated steam. Given the following data, Ethylbenzene, C6H5CH2CH3 : delta Ht = 12.5 kJ/mol, delta Gt = 119.7 kJ/mol and S = 255 J/mol*K
asked by Judith on November 10, 2015 
English
Background You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe
asked by Mary on March 7, 2011 
Math
Find the start, elapsed, or end time. 1. Start time is 11:00am Elapsed time is 4 hours and 5 minutes How do you go about finding the end time? 2. Start time Elapsed time is 9 3/4 hours End time is 6:00pm I am really confused on how to begin finding the
asked by Patrick on November 30, 2015 
chemistry
I need help on these questions. They all seem pretty similar i think? i don't know what formula i am suppose to use. And what does nonvolatile mean? is that like a clue or something? 1) 2.6 g of the nonvolatile solute sucrose (C12H22O11) is added to 465 g
asked by confusedkid on January 24, 2009 
English
I need to find specific questions and specific answers about these two books: 1 Tangerine, by Edward Bloor 2 Gilda JoycePsychic Investigator I don't need stuff like "What is the setting and theme?" but more specific q's and a's, like "What COLOR was her
asked by brie on May 26, 2007 
physics
A cubical block of density rB and with sides of length L floats in a liquid of greater density rL. (a) What fraction of the block’s volume is above the surface of the liquid? (b) The liquid is denser than water (density rW) and does not mix with it. If
asked by mary on February 3, 2016 
chemistry
While researching energy values of fuels, a chemist designed an experiment to find out the heat of combustion of pentane. Using the known hexane heat of combustion of hexane = 4650kJ/mol and the data below calculate the heat of combustion of pentane. Set
asked by sarah on March 28, 2010 
Calculus
Imagine that you live on an infinitely long and straight street called Infinite Drive. The addresses on Infinite Drive are given by real numbers. Your address on the street is π while your friend Patrick’s is √3 and Karen’s is sin60°. There are two
asked by Scooby16 on September 23, 2011 
chemistry
While researching energy values of fuels, a chemist designed an experiment to find out the heat of combustion of pentane. Using the known hexane heat of combustion of hexane = 4650kJ/mol and the data below calculate the heat of combustion of pentane. Set
asked by sarah on March 28, 2010 
Statistics: 82% Confidence Interval
I'm having some difficulty with this problem: Over the last 15 Major League Baseball seasons, the mean # of strikeouts by the American League leader is 258.5. Assuming that the # of strikeouts by the league leader is normally distributed & the standard
asked by melanie on June 22, 2008 
re math
Many people know that the weight of an objectvaries on different planets,butdid you know that the wieght of an object on earth also varies according to the elevation oj an object.in particualr ,the weight of an equation follows this equation:w=cr 2
asked by tera on April 8, 2009 
Physics
A tugboat pulls a ship with a constant horizontal force of 6000N and causes the ship to move through a harbor. The water exerts a constant drag force on the ship of 500N. How much work is done on the ship if it moves a distance of 4.0 km? Force is causing
asked by Felix on December 16, 2015 
math
Find the exact value of cos 300 degrees. thanks guys cos 300 = 1/2 = 0.500 how do you know? I am supposed to show my work. You ought to know the rule on 306090 triangles. If the hyp is 2, the shorter side is 1, and the longer side is sqrt3. what does
asked by Bill on June 2, 2007 
PRECALC HELP
1) Two boats leave the same port at the same time. One travels at a speed of 27 mi/h in the direction N 50° E and the other travels at a speed of 22 mi/h in a direction S 70° E (see the figure). How far apart are the two boats after one hour? (Round your
asked by JOHN on November 8, 2013 
Physics
There are four charges, each with a magnitude of 2.65 microcoulombs. Two are positive and two are negative. The charges are fixed to the corners of a 0.408m square, one to a corner, in such a way that the net force on any charge is directed toward the
asked by JJ on July 18, 2012 
statistics
Given a sample size of 38, with sample mean 660.3 and sample standard deviation 95.9 we are to perform the following hypothesis test. Null Hypothesis H0: ƒÊ = 700 Alternative Hypothesis H0: ƒÊ ‚ 700 At significance level 0.05 3. Calculate the test
asked by Scott on August 9, 2010 
Maths
What is surface area and how do you work it out? Surface area is the area on an object. How one works it is dependent on the object. SURFACE IS THE AREA OF ANY OBJECT. AND HOW IT WORKS IS IF YOU HAVE A SQUARE AND YOU WANT TO FIND THE PERIMITIER THEN YOU
asked by Sarah on February 14, 2007 
Physics
A force F1 of magnitude 6.90 units acts on an object at the origin in a direction θ = 54.0° above the positive xaxis. (See the figure below.) A second force F2 of magnitude 5.00 units acts on the object in the direction of the positive yaxis. Find
asked by Jennifer on September 20, 2015
Pages
 1
 2
 3
 4
 5
 6
 7
 8
 9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934