# 1.3 /73.814 In significant digit notation, divid, and the answer to two significant digits. I will be happy to critique your work

71,152 questions, page 588-
## physics

In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 4.4 m away. After a unning start, he leaps at an angle of 17◦ with respect to the flat roof while traveling at a speed of 4.3 m/s. The

*asked by Kacie on December 4, 2016* -
## physics

In a scene in an action movie, a stunt man jumps from the top of one building to the top of another building 4.9 m away. After a running start, he leaps at an angle of 17 ◦ with respect to the flat roof while traveling at a speed of 5.8 m/s. The

*asked by Anonymous on November 7, 2013* -
## Physics

An object is dropped from rest from the top of a 400 m cliff on Earth. If air resistance is negligible, what is the distance the object travels during the first 6s of its fall? a)30m b)60m c)120m d)180m e)360m I got a) as my answer. I used x-x_i = v_i * t

*asked by me on December 28, 2006* -
## Phyics help

I have a few physics questions: 1. How much mechanical work is done by a weightlifter holding a mass of 100 kg, 2.0m above the floor for 3.0 s? Explain ur answer. 2. Calculate the force needed to do 2.0 kJ of work to push a load of bricks 10m? 3. A

*asked by Anonymous on April 9, 2011* -
## Government (with answer choices)

Who has the power... (answer can be CONGRESS, HOUSE, SENATE, PRESIDENT, OR SUPREME COURT) 1. make laws 2. veto a legislative measure 3. make treaties 4. declare war 5. declare a law unconstitutional 6. coin money 7. regulate commerce 8. issue an executive

*asked by Tyler on October 10, 2007* -
## Chemistry

So I have had several homework problem like this and managed to solve them easily, but these two problems I cannot get the correct answer for. Using a Table of thermodynamic data, calculate the change in Gibbs free energy for each of the following

*asked by Don on February 17, 2011* -
## Health

Which activiy is an excellent stragety to help maintan strong teeth and healthy gums? A) treating gum disease B) treating tooth decay 2. The proper way to take care of your skin would be - A) Burst pimples before they get too big B) use quality products to

*asked by Sliverstream on February 1, 2019* -
## Physics

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At

*asked by Ann on December 13, 2010* -
## Physics

A person places the speakers 4.0 m apart and connects a signal generator to both speakers that produces a single and consistent tone. (constant wavelength and frequency) He then walks to a point that is 2.0 m from one speaker and 2.3 m from the other. At

*asked by Ann on December 13, 2010* -
## Math

Suki worked on math problems for 2hours on Monday , 2 hours on Tuesday, 2 hours on wednesday , 2 hours on Thursday , and 2 hours on Friday. How many hours did she study math in all? Answer : 5x2=10 Cashshews, brazil nuts, and peanuts originally grew in

*asked by Joji on November 18, 2013* -
## PHYSICS!!!!HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## Math

Earth orbits the sun in an elliptical pattern. the equation of earths path is (x+2.5)/22350.25 + y^2/22344=1 where the measurements represent millions of kilometers. The sun is located at the focus (0,0). In january, earth id located at one vertices which

*asked by Katt on December 11, 2017* -
## principles of finance some please help me!

The fixed cost for a firm drop by 25%. Prior to this breakthrough fixed cost were $100,000 and unit contribution maegin was and remains at 5.00. The new amount of break-even units will be: Thank You Very Much! ps: I got two answer Some information appears

*asked by Jean on March 29, 2007* -
## physics

Two objects of masses m1 = 0.58 kg and m2 = 0.92 kg are placed on a horizontal frictionless surface and a compressed spring of force constant k = 300 N/m is placed between them as in figure (a) shown below. Neglect the mass of the spring. The spring is not

*asked by sherry on March 8, 2016* -
## Qualitative analysis

Aqueous sodium hydroxide is added to a mixture of an aqueous solution of X with some aluminium alloy. On warming, ammonia gas is evolved. When X is treated with aqueous ammonia, a white precipitate that is soluble in excess aqueous ammonia is obtained.

*asked by Cheezel on November 17, 2016* -
## Algebra 1

I did this conversion problem, but I think it's incorrect. Problem: A bread slicer runs 20 hours per day for 30 days and slices 144,000 loaves of bread. How many loaves per minute are sliced? I did 20hr/1days times 30days/600hrs times 1hr/60mins times

*asked by Maya on October 16, 2014* -
## physicss

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 /6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## Physics (Rotation)

In the figure, wheel A of radius rA is coupled by belt B to wheel C of radius rC. The angular speed of wheel A is increased from rest at a constant rate α. Find the time needed for wheel C to reach angular speed ω assuming the belt does not slip. (Hint:

*asked by Anon on April 12, 2014* -
## Science-DrBob222-Help

I’m sorry, that’s exactly the way the question is written! I was confused by it myself! I think it means: Suppose you are at a concert and a singer’s voice is radio broadcast all around the world before reaching the radio you hold to your ear. This

*asked by Lizzie on January 25, 2010* -
## physics

A man stands on his balcony, 120 ft above the ground. He looks at the ground, with his sight line forming an angle of 50 degrees with the building, and sees a bus stop. The function d = 120 sec θ models the distance form the man to any object given his

*asked by Boba Fett Up on May 21, 2014* -
## AP Chem

Hey guys! Thanks for any help in advance! I'm back with this problem: Calculate the percent dissociation for a 1.00 × 10-6 M solution of HCN at 25 °C. Ka = 4.90 × 10-10. So my question really is do I have to use water when I calculate the percent

*asked by Allie on October 12, 2015* -
## Chemistry -Flame colors (check+help)

What are the characteristic flame color for sodium, potassium, barium, copper, strontium, and calcium? Explain why? Ans: i know the flame colours, but for the explain why, could the below be a possible answer? The characteristic flame color is due to the

*asked by Farah on February 14, 2011* -
## Microbiology

Please help me answer this question. Thanks a lots. Some Archaea have ATPases with different H+:ATP ratios. Assumes the delta Gp for ATP synthesis in one such organism is -518 mV. The minumum delta P required to generate ATP with a typical bacterial ATPase

*asked by Steven on February 9, 2012* -
## Physical science

A 50 kg pole vaulter falls from rest from a height of 5 meters onto a foam rubber pad. The pole vaulter comes to rest 0.22 seconds after landing on the pad. Calculate the athlete's velocity just before reaching the pad. Answer in m/s. I am so confused

*asked by Anonymous on February 25, 2008* -
## FINANCE

Assume the returns from holding small-company stocks are normally distributed. Also assume the average annual return for holding the small-company stocks for a period of time was 16.5 percent and the standard deviation of those stocks for the period was

*asked by Alec on April 2, 2014* -
## Education

Which of the following is true of memory? A) Teens have more false memories than younger children because teens have lived longer and have heard more stories that they incorporate into their memories falsely. B) Children in early childhood have more false

*asked by Lor on September 17, 2013* -
## PHYSICS *_* HELP PLEASE

A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1 6 g. Find the reading of the

*asked by MIKE on January 25, 2013* -
## physics

light travels from ethanol intro crown glass. what's the brewster angle in this situation? illustrate your answer with a light ray diagram. what's the signifcance of this angle of incidence? n1=1.36for ethanol nR=1.52 for crown glass tanangleB=nR/ni

*asked by Lora on January 16, 2010* -
## Physics

A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the

*asked by smh on March 18, 2012* -
## AP CHEMISTRY

I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s) NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium

*asked by DAN on March 19, 2012* -
## college algebra

A store sells cashews for $5.00 per pound and peanuts for $1.50 per pound. The manager decides to mix 30 pounds of peanuts with some cashews and sell the mixture for $3.00 per pound. How many pounds of cashews should be mixed with the peanuts so that the

*asked by addy2017 on August 5, 2014* -
## Stats - Help!!!

A student wanted to know the favorite lunch at a large high school with a closed campus. What is the first step in conducting a statistical study to answer the question? A. Select a random sample of students. B. State the goal of the study precisely. C.

*asked by Angela on April 14, 2016* -
## Physics

A star of mass 2.0 1028 kg that is 1.6 1020 m from the center of a galaxy revolves around that center once every 3.4 108 years. Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of

*asked by winterWX on February 16, 2007* -
## hisory

How does the location of where Carolina lives in Mexico shape her life and the opportunities available for her and her family? Write 3-5 sentences in which you provide three examples of how this particular location in Mexico has had an influence on

*asked by teddy:-) on November 25, 2017* -
## help

The interest rate on a second mortgage was5 7/8 % last month. This month the interest rate is 7 3/2 %. How many percentage points has the interest rate increased? Are you sure you mean 7 3/2% ? No lender would write an intereest rate that way. Perhaps you

*asked by carmen on March 26, 2007* -
## math

find the standard deviation for the following: 8,5, 12, 8, 9, 15, 21, 16, 3. There is a formula but our teacher wants us to do it a specific way. For example, 47, 41, 32, 53, 57. First you find the mean, which is 46 and then subtract it with each number in

*asked by sarah on December 8, 2013* -
## Social Studies/History

Can someone please help me(without giving me the answers) with some research. Each question asks about to people, but I have to answer for each person separately. The two people are Frederick Douglass, and Andrew Jackson. After all of that is done it still

*asked by Aria on May 16, 2016* -
## Statistics (Poisson)

Cars arrive at a toll booth according to a Poisson process with mean 80 cars per hour. How long can the attendant's phone call last if the probability is at least .4 that no cars arrive during the call. The book's answer is 23 seconds. That doesn't match

*asked by Sean on July 19, 2009* -
## AP CHEMISTRY

I really need this please!!!!!!! : write the equilibrium-constant expression and calculate the value of the equilibrium constant for each of the following reactions at 298 K. (a) NaHCO3(s) NaOH(s) + CO2(g) Answer: Keq = PCO2 (b)Value of the Equilibrium

*asked by DAN on March 19, 2012* -
## chem question

This is on a practise exam I have and I cant get part of it, I don't know if it is not only due to my not understanding but to the fact that the first two parts might be wrong. Thanks for your help if you can. Heres the question: A coffee-cup calorimeter

*asked by Natalie on June 20, 2006* -
## math word problem

The Main Hall on the college campus has four main levels, from the basement up to the third floor. The technology staff in the basement occasionally needs to see the President, who is on the first floor, and the Dean who is on the third floor. The stairs

*asked by M.A. on November 2, 2010* -
## Statistics

Types of bonds are divided into three categories: good risk, medium risk, and poor risk. Assume that of a total of 13,838 bonds, 7,035 are good risk, 1,388 are medium risk, and the rest are poor risk. One bond is chosen risk? Write only a number as your

*asked by Obi on October 1, 2015* -
## Biology Help!!!

Describe the relationship between ATP and ADP and the importance of this relationship within a cell. My answer: ATP stands for Adenosine Tri-Phosphate, and is the energy used by an organism in its daily operations. It consists of an adenosine molecule and

*asked by School Lover on September 22, 2014* -
## Chemistry

I'm having a hard time with Redox and how to figure out which is redox Select all of the reactions that are redox reactions. I) Ca + 2H2O Ca(OH)2 + H2 II) CaO + H2O Ca(OH)2 III) Ca(OH)2 + H3PO4 Ca3(PO4)2 + H2O IV) Cl2 + 2 KBr Br2 + 2 KCl I

*asked by Mark on March 18, 2010* -
## algebra

How do I do substitution equations out of the equations in the system, pick the one that has the least amount of funky numbers. then make that equation equal to either x or y(or any other variable dependin on what kind of systems youre doing, usually just

*asked by Adraen on November 30, 2006* -
## Chemistry

I'm having a hard time with Redox and how to figure out which is redox Select all of the reactions that are redox reactions. I) Ca + 2H2O Ca(OH)2 + H2 II) CaO + H2O Ca(OH)2 III) Ca(OH)2 + H3PO4 Ca3(PO4)2 + H2O IV) Cl2 + 2 KBr Br2 + 2 KCl I

*asked by Mark on March 18, 2010* -
## Mathematics/pre-algerbra

how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x See previous post. i still don't get it sorry Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16

*asked by Joe on April 9, 2007* -
## Algebra

Tom went on a 3 Day road trip in which he drove the same number of miles each day. He drove 42 mph the first day. He drove 48 mph the second day. On the last day he drove a x mph. His average speed for the whole trip was 47 mph. Find x and write your

*asked by HT on October 1, 2014* -
## Math

The CN Tower in Toronto, Canada, is the tallest free-standing structure in North America. A woman on the observation deck, 1150 ft above the ground, wants to determine the distance between two landmarks on the ground below. She observes that the angle

*asked by Anonymous on January 20, 2013* -
## Chemistry

Oxidation State numbers For Fe3+ i got 3+ b/c Oxidation state monatomic ion = ionic charge and i got that answer wrong. i am receiving wrong answers for these below aswell. I used these rules for the following -Alkali metals are always +1; alkaline earths

*asked by Jerry on October 5, 2010* -
## Health

Mandy wants to win the local youth tennis tournament next fall. Her coach has said that her serve is powerful enough, but she suggests Mandy train with a jump rope to improve her ability to cover more ground on the court when she’s playing. Why would her

*asked by Steve on December 31, 2013* -
## statistics

10. You have proposed a hypothesis that right-handed (RH) subjects will be superior in spatial analysis compared to left-handed (LH) subjects. Spatial analysis skills are being assessed on a scale which yields scores on a linear numerical scale. Given the

*asked by Linda on December 6, 2011* -
## physics

A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and the glider has mass M. A)Determine the frequency of the oscillation, assuming no damping, if k= 125N/m and M= 250g. (I got the

*asked by kelsi on May 25, 2009* -
## science

A mixture of two gases, C2H2 and H2, has the properties listed below. nC2H2=0.028moles nH2=0.015moles PC2H2=79torr What is the PT for this mixture? I first found out the mole fraction by first adding H2 and C2H2 and got 0.043, then did 0.028/0.043. I

*asked by Tiffany on August 25, 2010* -
## CHEMISTRY HELP !!!! CHECK !!!

Al3+ is reduced to Al(s) at an electrode. If a current of 2.75 ampere is passed for 36 hours, what mass of aluminum is deposited at the electrode? Assume 100% current efficiency. a. 9.2 x 10–3 g b. 3.3 x 101 g c. 9.9 x 101 g d. 1.0 x 102 g e. 3.0 x 102 g

*asked by YULCHANG on May 8, 2014* -
## Chemistry

At constant volume, the heat combustion of a particular compound is -3447.0 KJ/mol. When 1.205 g of this compound (molar mass = 119.94 g/mol) was burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 5.007

*asked by Angela on December 9, 2012* -
## MATH 115

The price of a home in Medford was dollar-sign Baseline 100,000 in 1985 and rose to dollar-sign 148 ,000 in 1997. a. Create two models, f(t) assuming linear growth and g(t) assuming exponential growth, where t is the number of years after 1985. Round

*asked by Anyno. on October 17, 2016* -
## maths/physics/biomechanics

At the beginning of a race, a yacht crosses the start line and sails in westerly direction at a speed of 4 m s-1. The current of the sea is flowing at 2 m s-1 towards the north-east. Calculate how far [8 marks] and in what direction (relative to west) [8

*asked by alex on February 9, 2012* -
## Physics

I found the average acceleration of earths orbit around the sun over a period of 5 days by calculating delta theta and dividing by radius and 1/T. I got the right answer but as I am studying for my test, I am seeing the units do not work...does this make

*asked by Brenda on October 24, 2012* -
## Chemistry Test Tomorrow

I don't actually have problems, but I have a test over stoichiometry tomorrow, which is pretty much going to determine my semester grade. I was just wondering if anyone knew any helpful tips, hints, or just an easier way to explain the basics of

*asked by Trish on December 14, 2006* -
## Language

Is this correct? Lessons are what we took at the pool to learn to swim better. Answer: to learn to swim better, we took lessons at the pool.

*asked by Please Help on August 14, 2014* -
## Physics

Object 1,which has a mass of 5 kg, is thrown at 10 m/s. Object 2 has a mass of 8 kg. With what speed should the second object be thrown for it to have the same momentum as Object 1? My answer: 6.25 m/s

*asked by Anonymous on February 7, 2018* -
## Physics

What are the products (either vector or scalar for each answer) of: a) scalar x scalar b) scalar x vector c) vector x vector A simple concept, but I want to be sure I get it right! Thanks for any help :)

*asked by Amy on October 24, 2014* -
## Math

Decide whether each equation has one solution, no solutions, or infinitely many solutions. 3(y-3)=2y-9+y A. One solution B. No Solutions C. Infinitely many solutions I did 3*y 3*3=9 2y=9+4 3-*=-6 x-27 Is the answer A?

*asked by Gwen on September 16, 2014* -
## English

1. Who are they? They are student reporters. 2. What are they? They are student reporters. 3. What's their job? They are student reporters. 4. What do they do? They are student reporters. (Which questions are suitable for the answer?)

*asked by rfvv on April 1, 2013* -
## Social Studies

what was the name of Lincoln's home and where was it located? Answer: I think his home was located in Springfield Illinois, and the name of his home was Lincoln's home.

*asked by Anonymous on July 16, 2014* -
## Math

i need this answer A.S.A.P what is the volume of pyramid C if the volume of pyramid D is 4608 m cubed and the height of pyramid D is 24 and the height of pyramid C is 12

*asked by Jack on April 18, 2017* -
## Math

4x-2=12 represented as a sentence is A two less than four times a number is 12 B four times two less than a number is 12 C four times a number is two less than 12 D four times a number less than two is 12 my answer is d. am I correct?

*asked by ILTHSM_ on November 9, 2018* -
## MATH PLEASE HELP!!!!!

There are 36 buttons in a jar. There are 3 times as many red buttons as white. 1. how many white buttons are there? 2. how many red buttons are there? My answer is 6,am i right?

*asked by LIDIA on August 18, 2011* -
## math

Please show the ratio answer as #:#. The length of a pool is twice its width. What is the ratio of the length to the width of the pool?

*asked by taylor on July 5, 2012* -
## math VERY URGENT AND IMPORTANT

Estimate the product of 1 9/10 and 15. Describe your method. Also,estimate the product of 3 7/8 and 25. Describe your method. Please answer and explain.

*asked by Anonymous on January 15, 2013* -
## Math

Did I do this right? Find the domain and range f(x)=-4x-2 y=-4x-2 x=-4y-2 x+2/-4=-4y/-4 f(x)=x+2/-4 answer: domain (all real numbers) range (all real numbers)

*asked by Beth on March 28, 2008* -
## Math

Is -12x = 6y a direct variation? If so what is the constant of variation. My answer is yes it is a direct variation and the constant of variation is -2 but I want to make sure. Please help

*asked by lol on December 19, 2014* -
## Algebra

what is a perfect square number i know 9, 25 and 100, but what else if you multiply a perfect square by a perfect square, is the answer always a perfect square

*asked by Cyleste on October 10, 2007* -
## Math

(2y-3)(3y-2) A. 6y2-13y+6 B. 6y2-13y-6 C. 6y2+13y-6 * D. 6y2+13y+6 *my answer (btw the 2 next to 6y is an exponent) I think that it is C, but I want to be sure that it is correct.

*asked by Haley on May 29, 2015* -
## Science

Most bacteria are a. unicellular eukaryotes b. unicellular prokaryotes c. multicellular eukaryotes d. multicellular prokaryotes is the answer d or c?

*asked by Talia on October 29, 2015* -
## Science

Most bacteria are A: unicellular eukaryotes B: unicellular prokaryotes C: multicellular eukaryotes D: multicellular prokaryotes Is the answer B?

*asked by Anonymous on January 21, 2015* -
## Algebra

2. Find the value of x^3 + 2x^2 - 3 when x=3 Answer-42 4. Compare the quantity in Column A with the quantity in Column B. Column A Column B The solution of The solution of 2(x-3) = 6x 3x + 2 + 5x + 6

*asked by lizzie on August 7, 2011* -
## English Check

In the discussion, answer the question: Which of the following characters served as the antagonist in "The Cold Equations"? •Barton •Marilyn •Commander Delhart •Records •Gerry Use evidence from the text in the form of examples and explanations to

*asked by School Lover on September 8, 2014* -
## history

i have 4 questions from an excerpt from President Truman's "Truman Doctrine" speech, made to Congress in March 1947. "nearly every nation must chose between... i believe that we much assist free peoples to work out their.." my first question is : when

*asked by history on March 31, 2009* -
## Psychology

In Schachter and Singer's experiment, participants who received epinephrine injections reported euphoria in a happy situation and anger in an insulting situation. Why were the results difficult to interpret? a) Placebo injections produced the same results

*asked by Alex on October 1, 2016* -
## chem

Write a partial decay series for Rn-220 undergoing the following sequential decays: á (alpha decay), á, â(beta decay), á. (Enter the mass number in the first raised box, the atomic number in the second lower box and the symbol of the element in the

*asked by lisa on September 30, 2010* -
## US History

Hello, I am filling out a study guide for a test coming up in two days, and I can not seem to find this answer in my text book. Could someone please help? Which of the following is true of the Korean conflict? A. It ended with an enormous American victory.

*asked by Brooke on April 27, 2016* -
## Physics-Conservation of Momentum

3. A train loaded with steel, moving at 90km/h, collides head on with a stationary train of mass 6000kg. if the trains couple after collision and move forward with a velocity of 80km/h, find the mass of the train loaded with steel. My work so far: PTO=PTF

*asked by Danielle on January 7, 2016* -
## 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 take-home pay, then the amount you earned before the

*asked by Nancy on April 19, 2011* -
## PROBABILITY

FIND THE EXPECTED PROFIT OR LOSS VALUE FOR 100,000 POLICIES: AN INSURANCE POLICY SELLS FOR $625. BASED ON PAST DATA, AN VERRAGE OF 1 IN 100 POLICY HOLDESWILL FILE $8000 claim, nd average of 1 in 250 policholders will file a $10,00 claim,and an average o 1

*asked by SNOOPY on April 17, 2008* -
## statistics

A random sample of size 49 is taken from a large population, measuring the time it takes to complete a driver’s license examination. The sample mean was found to be 47 minutes, and the sample standard deviation 5.89 minutes. Construct a 95% confidence

*asked by Anonymous on July 17, 2010* -
## Physics

A cyclist approaches the bottom of a gradual hill at a speed of 20 m/s. The hill is 4.4 m high, and the cyclist estimates that she is going fast enough to coast up and over it without peddling. Ignoring air resistance and friction, find the speed at which

*asked by Zach on February 25, 2008* -
## INB

Effects of Economic and Socioeconomic Forces: Choose one newly industrializing countries mentioned in the text (p. 102 International Business) Choose a product you think would be suitable to export to the country you chose based solely on that country’s

*asked by deshaun on May 7, 2008* -
## Civics

10. Which of these statements about the Cuban Missile Crisis is true? A. President Kennedy removed nuclear missiles from Turkey to resolve the crisis. B. Fidel Castro's government had manufactured guided missiles. C. President Kennedy called Nikita

*asked by Sarah on April 25, 2015* -
## statistics

The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

*asked by mzb on January 22, 2013* -
## physics

A 25.7 kg mass attached to a spring scale rests on a smooth, horizontal surface. The spring scale, attached to the front end of a boxcar, reads T = 47.6 N when the car is in motion. If the spring scale reads zero when the car is at rest, determine the

*asked by jack on January 15, 2015* -
## math

to play the nickel game a player tosses two coins at the same time if both coins land tails then the player wins $1 if both coins land heads up then they win $2 suppose you play this game 12 times and it costs $1 to play how much money could a player win

*asked by queen on April 28, 2018* -
## Chemistry

Given that the solubility of sodium chloride is 36 grams per 100 grams of water. Which of the following solutions would be considered supersaturated? A. dissolve 5.8 moles of NaCl in 1 L of water B. dissolve 1.85 moles of NaCl in 300 ml of water C.

*asked by Coug on November 21, 2009* -
## algebra

in the past professional baseball was played at the astrodome in Houston, Texas. the astrodome has a maximum height of 63.4 m. the height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/s is given by h = -9.8t + 45t

*asked by anon on April 11, 2013* -
## Environmental Science

In completing this discussion question, you may want to list the pros and cons of allowing more mineral exploration and mining on public lands in the United States. Consider these factors in reaching your decision regarding exploration and mining on these

*asked by Michael on September 18, 2007* -
## calculus

The Institute finds that the average student taking Elementary Shorthand will progress at a rate given by dQ/dt=k(80-Q) in a 20 -wk course, where Q(t) measures the number of words of dictation a student can take per minute after t wk in the course. If the

*asked by help please. on April 21, 2012* -
## Physics

A concave, spherical mirror and a thin, converging lens are both measured in air (n=1.0) to have the same focal length, ff. Both the mirror and the lens are then placed under water (n=1.33) and their focal lengths are measured again. For both the mirror

*asked by Urgent Help Needed Please!!! on October 30, 2016* -
## 4th grade

trains begin to stop at terminal b every morning at 5 a.m. and then come every 20 minutes for the next 3 hours. mr success needs 15 minutes to get to terminal b from his house. .if mr. success leaves his house at 7:08 a.m., what is the earliest time he can

*asked by dk on March 24, 2011* -
## math

james is making fruit juice, using fruit cordial and water. the label on the cordial says "to make 1 litre of fruit juice, use 200 ml of cordial and 800 ml of water" james uses 250 ml cordial and 850 ml of water. is james using the correct proportions?

*asked by danielle on October 7, 2012*

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