# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 793-
## microeconomics - monopoly vs perfect competition

hi, can sum1 help me? wats difference between monopoly and perfect competition? one is a solely dominated market and the other is a market with many producers 1)The monopolist is the price-maker. But the firm i under aperfect compepetion is the

*asked by RyaN on November 8, 2006* -
## Chemistry

How would you start these problems? ...I suppose this is a continuation from this post: (replace the numbers with id=1395127807) But, I have yet figured out the ΔH ̊ and ΔS ̊ . But once that is figured out, how would I start problem #1? Also, for

*asked by Airin on March 18, 2014* -
## american history

I nee help revising my essay here it is This is what my general view on American History. Well let me tell you it’s a course that we all have to take in high school to graduate. In school we are confronted with American History, state History and general

*asked by connie on February 24, 2012* -
## Marketing

Select a company and product (real or imaginary). Use the Internet to find 5 websites that provide the types of information and data that you would use in a marketing information system for that company. You need to find information, data, and/or

*asked by sarah loid on August 6, 2007* -
## epi

Workers in less developed countries have comparable death rates to the U.S. in the same industries. (Points: 3) True False 2. OSHA and NIOSH were established as provisions of the 1976 Toxic Substances Control Act. (Points: 3) True False 3. Which of these

*asked by Anonymous on September 21, 2008* -
## English

Bob: Look at that terrible painting! (Amanda steps backward and gives Bob a puzzled look.) Amanda: Why don't you like it? I think it's quite creative. Bob: It's just squiggles and spots. I can't make any sense out of it. Amanda: It's a abstract art, Bob.

*asked by CanYouHelpMe on March 15, 2017* -
## Chemistry

Al and Fe react with HCl to produce a chloride salt and hydrogen gas. A .1924g sample of a mixture of Al and Fe is treated with excess HCl solution. A volume of 159mL h2 gas is collected over water at 19C and 841 torr. What is the mass percent by mass of

*asked by Lisa on September 29, 2014* -
## Chemistry(Please respond)

Calculate the pH of an aqueous solution of 0.15 M potassium carbonate. I know that pH = -log(H30+) but I am not sure how to start this problem. Chemistry(Please help) - DrBob222, Saturday, April 14, 2012 at 11:09pm Hydrolyze the CO3^2-. CO3^- + HOH ==>

*asked by Hannah on April 18, 2012* -
## chemistry

for our lab, we are given the molarity of ClO-. We are then supposed to use beer's law to determine the molarity of the dye that was used to make the solution with. For the dye, use the first absorbance value, Ao, and calculate the initial concentration of

*asked by Anonymouse one on February 21, 2011* -
## Physics

Need help matching the numbers to a - f. I need some explanations to understand. 4. The water enters the pump at a low pressure and the pump does work on the water to eject it at high pressure and with more energy. 5. The water pump provides the motive

*asked by |-/ on March 18, 2018* -
## Physics

A set of crash tests consists of running a test car moving at a speed of 12.2 m/s (27.3 mi/hr) into a solid wall. Strapped securely in an advanced seat belt system, a 75.0 kg (165 lbs) dummy is found to move a distance of 0.630 m from the moment the car

*asked by Haylee on March 18, 2013* -
## Algebra

This is a word problem I am supposed to solve with systems. I am having trouble setting it up if anyone could help me. A coin bank contains only dimes and nickels. The bank contains 46 coins. If 5 dimes and 2 nickels were removed the total value of the

*asked by emm on November 13, 2008* -
## chemistry

Vanadium is an environmental pollutant originating from some types of steel, but also from the combustion of fossil fuels. The amount of V2+ in an unknown sample is determined by potentiometric titration by 7.62 mM permanganate ion, MnO4 - . 25.00 mL of

*asked by siri on July 23, 2016* -
## Physics

A roulette wheel with a 1.0m radius reaches a maximum angular speed of 18 rad/s before it stops 35 revolutions ( 220 rad ) after attaining the maximum speed. How long did it take the wheel to stop? Unless you mean the 35 revs occur after max speed, it

*asked by Robert on December 19, 2006* -
## Business Maths

Please show me how to calculate this problem: During 2007, Sitter Corporation reported net sales of $2,000,000, net income of $1,200,000, and depreciation expense of $100,000. Sitter also beginning total asset of $1,000,000, ending total asset of

*asked by Peaches on December 4, 2009* -
## physics

An 80.9 kg astronaut is taking a space walk to work on the engines of his ship, which is drifting through space with a constant velocity. The astronaut, wishing to get a better view of the Universe, pushes against the ship and much later finds himself 30.3

*asked by jojo on May 31, 2011* -
## Physics

Consider a capacitor made of two square plates of side 'l' . The distance between the two plates is 'd'. a) We insert a dielectric of dielectric constant K>1 and width l, a distance x (as in the diagram). What is the total capacitance of this arrangement?

*asked by Phy on March 12, 2013* -
## English

I selected 5 sentences as promised. I really hope the others were correct! Sentence number 6 refers to the Italian grading system which I don't know how to express in English. 1) During the break I go out in the courtyard.We aren't allowed to smoke or run

*asked by Franco on September 19, 2010* -
## resume help

i have to write a resume for my english class so for my job, i want to be those people who help out customers when walking around in stores. what is that position called? is it like a sales clerk or something? don't worry, this is not my future career. i

*asked by Anonymous on April 30, 2007* -
## History

1. What motivated Bismarck to enact reforms in Germany? 2. What kind of reforms were inacted in Germany and Britian? My answers: 1. Bismarck wanted Germany to be more united and when nationalism spread through Germany it helped Germany become a leading

*asked by Chrissy on September 27, 2007* -
## Modern World Studies

1. What motivated Bismarck to enact reforms in Germany? 2. What kind of reforms were inacted in Germany and Britian? My answers: 1. Bismarck wanted Germany to be more united and when nationalism spread through Germany it helped Germany become a leading

*asked by Chrissy on September 26, 2007* -
## Psychology

16. Greg and Lydia have been married three years. Both hold executive positions in large corporations and are well respected in their fields. Last January, they were thrilled with the arrival of their first child. Lydia returned to her same position after

*asked by Katherine on July 25, 2013* -
## social studies

How many people work at Kennedy Space Center? http://www.nasa.gov/centers/kennedy/about/biographies/bio-current.html You can count the number of people listed here, but I'll bet this is not the entire employment list. You might also click on FirstGov and

*asked by harley on January 25, 2007* -
## math

Let h(x) = 3 x2 + 2 x + 1. Let g(x) = 3√{x} + 3. (Note: If there is a nonmathematical symbol in the preceding expression, then your browser doesn't have the math symbol font. Please follow the instructions on the Tools page in Oncourse to install the

*asked by Cara on September 17, 2010* -
## ESSAY EDITING

please edit for grammar and sentence structure!! thanks in advance!! Resnik briefly discusses several standards of ethical conduct in science. I will explain the standard of openness from Resnik’s point of view, and argue why it is important to follow

*asked by JESS on November 5, 2007* -
## Math 1 quick question

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

*asked by Miley on September 14, 2013* -
## MATH

trying to work equation problems and my answer is different from answer in textbook. 12/x = -3 and 24=120/x 1. 12/x(12)= -3(12), x= -36 textbook has -4 2. 24(120)= 120/x(120), x = 2880 textbook has 5 What am I doing wrong???

*asked by Amy on November 19, 2015* -
## Math

The length of a rectangle is 10 more than 1/2 the width. The perimeter is 38 feet. Find the length and width of the rectangle. The answer is L= 13, W=6 How do you get the answer???? Like how do you work it out to get that answer????

*asked by Megan Bill on December 12, 2010* -
## To: Jai

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

*asked by Miley on September 14, 2013* -
## Physics

A typical coal-fired power plant burns 310 metric tons of coal every hour to generate 790 MW of electricity. 1 metric ton= 1000 kg. The density of coal is 1500 {\rm kg}/{\rm m}^{3} and its heat of combustion is 28 \;\rm MJ/kg. Assume that all heat is

*asked by Jennifer on November 17, 2010* -
## Seattle central college

Which of the following is author’s opinion a. Olmsted - was appoint superintendent and worker began cleaning the land for construction. b. After a vote by park commissioner, Vaux and Olmsted become the officer design of Central Park. c. Calvert Vaux, a

*asked by Kim on March 21, 2018* -
## Math

Each of the following objects have been measured with inappropriate units. Convert them to more suitable units. (Please check my work and see if the units are correct for the situation?) a) The thickness of a dime is 0.00122m 0.00122m*100cm/1m = 0.122cm b)

*asked by Bree on July 18, 2014* -
## marketing

you work in the marketing department of a small sportswear and accessories, but a proposal to diversify into sports shoes is under consideration. your marketing director asks you to write a report on the advantages and disadvantages of entering the sports

*asked by Anonymous on November 15, 2010* -
## English/Film and Media studies

Hi My assignment is to talk about a documentary that doesn't exist. We had to pretend to create one and one of the things we need to discuss is our shot construction so everything from lighting, location to shot sizes. Then we need to talk about voice

*asked by Em on July 19, 2011* -
## Chemistry

When a good indicator has been chosen, the pH at which the solution changes color is very close to the equivalience point of the titration. If this "point" for a particular titration occurs at pH x, a good indicator for the titration would be indicator. X

*asked by tia on April 8, 2008* -
## Science

How much more concentrated is 1ml of 0.5mg/ml haemoglobin in 10% sucrose at an absorbance of 2.4, compared to a solution of 0.1ml of 0.5mg/ml haemoglobin in 10% sucrose and 0.9ml of 10% sucrose at an absorbance of 0.350

*asked by Lillie on March 8, 2017* -
## CHEMISTRY

Whats the mass concentration of H2SO4 in a solution with percent mass 36% and density 1.84g/cm3 W(H2SO4)=36%? density(H2SO4)=1.84g/cm3 MassConcentration=?

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

Potable water (drinking water) should not have manganese concentrations in excess of 0.05 mg/mL. If the manganese concentration is greater than 0.1 mg/mL, it imparts a foul taste to the water and discolors laundry and porcelain surfaces. In an acidic

*asked by jason on April 18, 2015* -
## Math156

I can understand in my head how to solve it I can't figure it out on paper. Help......I'm sure this will be easy for someone. The Rental Depreciation Problem. The owner of a rental house can depreciate its value over a period of years, meaning that the

*asked by Christy on September 12, 2009* -
## pyschology

The Biosocial approach suggests that gender differences are based on: a. the hormone and neurological differences between men and women b. how men and women think about their environment c. the physical ability of men to protect the home and of women to

*asked by lisa on April 20, 2011* -
## proportion test

How to solve this? In a manufacturing plant, the old machine produced widgets with a defect rate of 12%. The boss wants to check if the new machine has a different defect rate. So he took a random of 820 widgets, and found 85 of them were defective. Are

*asked by oli on November 16, 2014* -
## finite math

A $1.2 million state lottery pays $5,000 at the beginning of each month for 20 years. How much money must the state actually have in hand to set up the payments for this prize if money is worth 7.7%, compounded monthly? (a) Decide whether the problem

*asked by help plzzz on May 1, 2011* -
## Physics

these are practice questions that i have the answer to, but i don't know how to solve them: 1.A human hair is approximately 50um in diameter. Express this diameter in meters. 2. if a radio has a period of 1us, what is the wave's period in sesconds? 3. A

*asked by y912f on January 28, 2009* -
## MATHS

Pipe A can fill a swimming pool in 10 hours.Pipe B can fill the same pool in 8 hours. If pipe A and pibe B work together for the first 2 hours and then pipe B stops working, how long will it take pipe A to finish the job?

*asked by LISA on January 26, 2015* -
## Science

Which of the following body systems work together to get cells the nutrients they need to carry out cellular respiration? A. the digestive and respiratory systems B. the respiratory and circulatory systems*** C. the digestive and circulatory systems D. the

*asked by Ms. P on February 12, 2019* -
## Math

Identify the rate, base, and amount 23% of 400 is 92 Complete the statement: 8 ft = _____ in Complete the statement. (Round to the nearest hundredth.) 250 km = _________ mi 3.Find the rate: 69 feet and 3 seconds Find the rate: 57ounces and 3 cans Solve the

*asked by Gertrude Sanders on October 26, 2008* -
## physics

during a collision, a driver of mass m in a car moving at speed v is brought to rest by an inflated air bag in time t. (a) write an equation showing the average force the air bag exerts on the driver. (b) suppose the mass of the driver is 55 kg, the

*asked by osama on March 21, 2016* -
## Math

Darren is making a map of population density in Central Florida. The two isosceles triangles below show the most and least populated areas according to Darren's results. The base of the large triangle covers 96 miles and the base of the small triangle

*asked by Anonymous on April 10, 2013* -
## Religion

On what day do most modern Christians participate in the activity shown? A. Sunday B. Monday C. Saturday D. Friday(it's a picture of people show in church) one. i know back in the old testament Christians celebrated the sabbath on Saturday. they also

*asked by Mel❤nie on January 11, 2019* -
## English

The children noisily entered the classroom as usual after their lunch break. One little girl approached the whiteboard and posted a post-it note on it. Written on the note was a complaint she had from lunch. The teacher read the note and she signaled me to

*asked by Roxy on June 24, 2008* -
## chemistry

When 1.933 g of KNO3 is dissolved in 200 g of water initially at 23.57 ¢ªCelsius in a coffee-cup calorimeter, the final temperature is found to be 22.63 ¢ªCelsius. Calculate the heat released/absorbed per gram of KNO3 and per mol of KNO3 when KNO3

*asked by Spenser on October 14, 2014* -
## chemistry

CrCl3(s) + AgNO3 (aq)= AgCl(s) + Cr(NO3)3(aq) A 0.750 g sample of impure CrCl3 was removed from a bottle that contained 1.75 g of impure sample. The removed sample was dissolved in water and required 42.5 mL of 0.215 M AgNO3 solution to react with the

*asked by jade on March 12, 2012* -
## Algebra

Alex can remodel a bathroom in 2 days. Abraham can remodel the same bathroom in 4 days. How long will it take them to remodel the bathroom if they work together?

*asked by Anonymous on October 23, 2013* -
## algebra

It takes 7 hours for Will to paint a house. Judy can paint the same house in 3 hours. How long will it take them to paint the house if they work together?

*asked by sandra on March 11, 2011* -
## Algebra 1

Alex can remodel a bathroom in 2 days. Abraham can remodel the same bathroom in 4 days. How long will it take them to remodel the bathroom if they work together?

*asked by Anonymous on October 23, 2013* -
## Physics

A 263-g block is dropped onto a vertical spring with force constant k = 2.52N/cm. The block sticks to the spring, and the spring compress 11.8 cm before coming momentarily to rest. while the spring is being compressed, how much work is done: (a) By the

*asked by Kampamba Nsofu on May 24, 2017* -
## Calculus

I am trying to find the integral of e^(6x)sin(7x). Apparently, the answer is (6e^(6x)sin(7x) - 7e^(6x)cos(7x))/85) + C and achieving the answer is mostly understandable since it involves integrating the function in parts... that is until I get to this

*asked by Lindsey on October 7, 2018* -
## Health-Care

Discussion Questions 1. Have you used information technology in your educational program before? Was there any terminology related to use of technology that you found difficult to understand? While taking this course, were there any terms related to the

*asked by roek on October 2, 2009* -
## Math

You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physic. You purify a sample of 2 grams.One of you colleges steals half of it, and 3 days later you find that 0.1 grams of the radioactive

*asked by Eric on September 16, 2014* -
## Math

Ms. Hendricks asked her students how they get to school each day. She collected their answers and determined the following results. • Half of her students take the bus. • 1 5 of her students walk. • The rest of her students ride with their parents.

*asked by Frances on May 5, 2011* -
## mechanics

Short column of rectangular cross section 160mm by 60mm carrying point load of 40 KN at max eccentricity position along the longer axis so that no tensile stress is applied. I worked out max eccentricity as 26.66 mm from RH and LH, and compressive stress

*asked by Danny on November 26, 2015* -
## math

please people i need your help. *Equal squares as large as possible are drawn on a rectangular board measuring 50 cm by 70 cm. Find the size of the square. Steve today at 8:18pm assuming you mean to cover the entire board, then since GCD(50,70)=10 The

*asked by kelvin on May 20, 2018* -
## Physics

A student makes ice cream using an old-fashioned hand-crank machine. He does 40 joules of work each time he turns the crank in a complete circle. The crank handle makes a circular path with a diameter of 0.5 meters. The student turns the crank at a rate of

*asked by kek on February 10, 2017* -
## Math

A pigeon runs into a flock of pigeons and asks their leader what is your number in this flock? The leader replays: I am not suppose to tell you our exact number, but if you take twice our number and add a half of our number and still add another quarter of

*asked by Anonymous on September 10, 2009* -
## math

A pigeon runs into a flock of pigeons and asks their leader what is your number in this flock? The leader replays: I am not suppose to tell you our exact number, but if you take twice our number and add a half of our number and still add another quarter of

*asked by I have a headache on September 9, 2009* -
## science

when you use a graph to solve a problem about how far a car traveled during a specified time during which it was accelerating how many area calculations do you have to make? what is/ are the shape/shapes you are calculating? a. one area calculation, a

*asked by carrie on May 12, 2010* -
## Check my answers for world history

Star* by my answer 7. Which of the following was not a goal of Roosevelt's Square Deal? Creation of a social security system. Ensure that goods produced by American businesses were safe for consumers.* Conservation and preservation of the environment in

*asked by Carrie on January 20, 2016* -
## Math

Budget $80,000 & $38,000. 25% OF THIS BUDGET WILL BE USED TO RENT BUSINESS SPACE & PAY FOR UTLITIES.Write an algebraic expression that indicates how much money will be spent on business space & utilities. Don't solve. How much money will rent & utilities

*asked by Billie on September 27, 2009* -
## PHYSICS - please help!!!

In the product F = qv · B , take q = 4, v = 2.0i + 4.0j + 6.0k and F= 136i -176j + 72k. What then is in unit-vector notation if Bx = By? I still can't get the right answer though... I am stuck here: 136i-176j+72k=(8i+16j+24k)x(Bxi+Byj+bzk) How do I solve

*asked by sam on March 29, 2007* -
## QUANTITATIVE REASONING FOR BUSINESS

FOR AN INSTALLMENT LOAN, A FORMULA IS USED TO FIND THE TOTAL AMOUNT OF INSTALLMENT PAYMENTS. THE FORMULA IS TOTAL INSTALLMENT PAYMENTS = INSTALLMENT PRICE - DOWN PAYMENT. THE FORMULA CAN BE WRITTEN IN SYMBOLS AS T = P - D. SOLVE THE FORMULA FOR D.

*asked by Alesha on January 17, 2014* -
## math-inequalities

Hi, I am having some problems with inequalities. It is asking us to solve and graph on a number line and then write it in interval notation and set notation. X>2 and X>4 I graphed them in a number line already and i have the following: Interval notation

*asked by phobia on February 14, 2011* -
## Math

For a contest, students have to solve this problem: The length of a rectangle is 6 cm more than its width. The perimeter of the rectangle is 84 cm. What are the dimensions of the rectangle? a) One student says the dimensions of the rectangle are 39 cm by

*asked by Anonymous on April 14, 2019* -
## math

Please help. Hi, I am having some problems with inequalities. It is asking us to solve and graph on a number line and then write it in interval notation and set notation. X>2 and X>4 I graphed them in a number line already and i have the following:

*asked by phobia on February 15, 2011* -
## English (Need help rephrasing)

Can you please help me rephrase this? I have completed over 150 volunteer hours at {name} Hospital. Delivering and filing medical transcriptions is one of my favorite jobs. Through this work, I was able to explore every part of the hospital while having

*asked by Jacob on November 18, 2007* -
## Physics 1

In recent years, scientists have discovered hundreds of planets orbiting other stars. Some of these planets are in orbits that are similar to that of earth, which orbits the sun (Msun = 1.99 × 10^(30) kg) at a distance of 1.50 × 10^(11) m, called 1

*asked by Skyler on March 1, 2015* -
## math just need someone to check and make sure this

The Office Jet printer can copy Janet's dissertation in 10 min. The Laser Jet printer can copy the same documents in 8 min. If the two machines work together, how long would they take to copy the dissertation? 10*8=80 80/18= 4.4 so it would take 4 min. is

*asked by Marie on May 20, 2010* -
## Calculus

A force of 6 pounds is required to hold a spring stretched 0.2 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.6 feet beyond its natural length? could you please explain how.

*asked by john on October 26, 2015* -
## Physics

In physics, work is defined as the product of the A) net force and the distance traveled B) net force parallel to the motion and direction traveled C) net force parallel to the motion and the time it is applied

*asked by Beth on November 4, 2016* -
## chemistry

I am a freshman in college, and am taking a placement test soon, but haven't seen chemistry since 10th grade. I'd appreciate any help I can get from anyone here to help me solve this problem: Hydrogen and sulfur chemically combine to form the gas hydrogen

*asked by John on January 5, 2012* -
## physics

Need help on which formulas I use to solve problems? A coil of wire with 200 circular turns of radius 3.00 cm is in a uniform magnetic field along the axis of the coil. The coil has R = 40.0 ohms. At what rate, in teslas per second, must the magnetic field

*asked by physicsclass on May 7, 2011* -
## Math

This may be confusing and I apologize. 1. What is the value of x? Round the answer to the nearest tenth. The diagram is not drawn to scale. The diagram is a circle with two triangles in the middle that touch the inside wall of the circle. where they meet

*asked by Tim on June 8, 2016* -
## Physics

A sled which has a mass of 45kg is sitting on a horizontal surface. A force of 120 N is applied to a rope attached to the front of the sled such that the angle between the front of the sled and the horizontal is 35 degrees. As a result of the application

*asked by jo on February 25, 2012* -
## phone/internet

Hi, this isn't anything to do with home work. (Thank God I'm done with homeschooling)But I have a question to do with internet connection. I just got a new phone yesterday, and it needs connection to the wireless internet at my house so i can use internet

*asked by y912f on August 2, 2010* -
## Chemistry

Sulfur trioxide gas, one of the causes of acid rain, is produced in the upper atmosphere when oxygen reacts with sulfur dioxide gas in the reaction shown below: 2SO2(g) + O2(g) 2SO3(g) deltaH0 = -197kJ The gases are placed in a reaction vessel and allowed

*asked by Abbagail on April 6, 2012* -
## math

what would the dimensions of a retangle be whose perimeter is 50(P=50)inches when the length is 2x-5 ane the width is unknown The width must be 25 - (2x-5) = 30-2x, since the sum of the length and width must be half the perimeter. You do not have enough

*asked by Sissy on April 22, 2007* -
## algebra

1 A + (B + C)= (A + B) + C associative scalar quantity dot product 2 2 2 3 Two systems of linear equations involving the same variables are said to be _______ if they have the same solution set. set associative equivalent parallel 4 Compute the determinant

*asked by Mandung on January 14, 2013* -
## Creativity-- Question

Which phrase fosters creativity? 1. "There is no such thing as a purple cat." 2. "I'll show you how to do it." 3. "What is this a picture of?" 4. "You used lots of purple in your picture!" Would "You used lots of purple in your picture!" be correct? Of the

*asked by Alana on August 4, 2007* -
## Physics

[b]1. The problem statement, all variables and given/known data[/b] A 90 N sign hangs on the end of a 55 N beam supported by a wire as shown. The beam is attached to the wall by a hinge. What are the horizontal and vertical componetns of the force on the

*asked by Kate on January 5, 2010* -
## Physics

1.A student repeatedly measured the length of a simple pendulum and recorded the results in centimetre as: 36.9, 36.7, 36.8 and 36.6. What is the precision index of this measurement in cm? 0.108 36.75 0.054 0.0269 2 How would the final result of the

*asked by Phoenix on June 4, 2017* -
## Math

An aircraft is to carry a load of relief food supplies from a depot which holds 2 kinds of food package. Each carton of food package A weighs 15 kilograms, 40 liters in volume and contains 250 ration units. Each carton of food package B weighs 25

*asked by Ashley Kate on January 13, 2014* -
## geometry

in a right triangle ABC, if ab is 14 and bc is 12 wut is bd? there is a pic of a large trangle abc and in it is a line drawn down angle c making it line cd. angle acd then becomes a right trangle as well. i tried working = proportions and pyth thm but i

*asked by yacoub on July 15, 2007* -
## Geometry check my answer?

The diameter of a car tire is approximately 0.6meters. The warranty is good for 70,000 km. About how many revolutions will the tire make before the warranty is up? More than a million? a billion? ----------------------- my work c=pi*d c=3.14*0.6 c=1.884

*asked by Skye on January 23, 2011* -
## MELODY

The parachute on a race car of weight 8850 N opens at the end of a quarter-mile run when the car is traveling at 31 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1000 m? [so for this one, i need to know

*asked by Melody on October 24, 2009* -
## chemistry

Hii i was wondering if u cud help me solve this problem..im not sure how to start it. Calculate the delta H for the reaction of solid potassium with liquid water. If a 5.00 g piece of potassium is added to 1.00 kg of water at 24 degrees celsius what is the

*asked by Anmol on November 5, 2009* -
## Physics

A 1.8 tonne railway truck moving at a speed of 3m/s up a steady incline comes to a stop after 45m. If the sum of the friction opposing the truck amounts to 80N What is the angle of elevation of the slope? I found Fg using m*g THen I tried using v^2=u^2 +

*asked by Random on June 11, 2014* -
## Math ASAP please

13. Mia charges $2.25 per hour when she babysits, plus $5.00 for transportation expenses. Write a function rule to represent the amount y Mia charges to babysit for x hours. (1 point) y = 2.25x + 5.00 y = 5.00y + 2.25 y = 5.00x + 2.25 y = 7.25x 14. The

*asked by Delilah on May 2, 2013* -
## Chemistry

A sample of toluene, C7H8 has a mass of 74.5 g. a) how many molecules does the sample contain? b) How many carbon atoms does it contain? How many hydrogen atoms does it contain? My work For b would it be 7 carbon atoms and 8 hydrogen atoms

*asked by chemistry on November 24, 2014* -
## Math

Two combines are able to harvest 320 acres of crops in a certain amount of time. How many acres will (a)3, (b)4, (c)6 and (d)7 combines harvest if they work at the same rate for this amount of time?

*asked by Nina on December 24, 2016* -
## Algebra

sue can shovel snow from her driveway in 60 minutes. Tom can do the same job in 35 minutes. how long would it take Sue and Tom to shovel the driveway if they work together?

*asked by Megan on July 7, 2016* -
## Civics

Which quotation(s) from the united states constitution provides for a federal; system of federal government? Statement I:- "The … Manner of Elections for Senators and Representatives shall be prescribed (will be decided by ) each state Legislatures; but

*asked by jeje on January 18, 2015*

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