# 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

91,330 questions, page 812-
## math

the radius of a circle when the numeric values of the circumference and area are equal. circumference = 2*pi*r area = pi*r^2 Set them equal and solve for r. thanks! i understand it now! 2*3.14*r=3.14*r^2 6.28*r=3.14*r^2 r=3.14 Is that right? It doesn't

*asked by christina on October 25, 2006* -
## math

The boy decided to ride the terror tower. at its maximum height, the ride reaches 65m above ground. When the boy reaches the top of the tower, his gum falls out of his mouth. the height of the gum can be given by the model: h=65-4.9t^2 where t is in

*asked by Lilly on April 6, 2018* -
## English

I had to write a brief review on a movie and needed five adverbs and five adjectives and three superlatives and three comparatives here is what I wrote.The supporting character I was most impressed with was Frenchie. She did a terrific job, both in her

*asked by Kathy on March 23, 2011* -
## Pre-Algebra

On a school field trip, the school requires that there are 3 teachers for every 75 students. If 125 students attend the trip how many teachers are needed? Write and solve a proportion. Triangle CAT is located at C (-5, 2), A (-4, 4), T (-1, 2). Find the

*asked by Woltia on November 7, 2018* -
## Algebra

Leticia sets the thermostat in her apartment to 68 degrees. The actual temperature in her apartment can very from this by as much as 3.5 degrees. 16. Write an absolute-value equation that you can use to find the minimum and maximum temperature. 17. Solve

*asked by DreamEaterMary on August 24, 2015* -
## Math

A photo is 4 inches wide. It is placed inside a frame with a border that is x inches wide. The total width of the photo and the frame is 7 inches. Write an equation to model the situation. Then solve the equation to find the width of the border. 4 + x = 7

*asked by Fading on September 29, 2016* -
## math please help asap

a photo is 4 inches wide it is placed inside a frame with a border that is x inches wide the total width of the photo and the frame is 7 inches write an equation to model the situation then solve the equation to find the width of the border.

*asked by lilly on September 6, 2016* -
## Physics

Please solve and answer. Need done ASAP. A speeder passes a parked police car at 35.0 m/s. The police car starts from rest with a uniform acceleration of 2.39 m/s2. (a) How much time passes before the speeder is overtaken by the police car? __ s (b) How

*asked by Cheyenne on April 5, 2016* -
## chemistry

5.750 ml of a soil sample was dissolved in water up to the volume of 50 ml. An aliquot of 10 ml of the same was transferred to an Erlenmeyer flask and added 10 ml of KOH 1 mol L-1 and 2. Drops of Calcein and the solution that had a yellow coloration was

*asked by william on June 24, 2018* -
## Aqueous Stoichiometry

Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M

*asked by Chemically Confused on June 11, 2009* -
## chemistry

Can someone give me some directions as to how to reach the answer for this problem: A 0.608g sample of fertilizer contained nitrogen as ammonium sulfate, (NH4)2 SO4(s)+2NaOH(aq)-->Na2SO4(aq)+ 2H2O(l)+2NH3(g) The ammonia was collected in 46.3 mL of 0.213 M

*asked by Chemically Confused on June 11, 2009* -
## Calculus 2

Consider a trough with triangular ends where the tank is 10 feet long, top is 5 feet wide, and the tank is 4 feet deep. Say that the trough is full to within 1 foot of the top with water of weight density 62.4 pounds/ft^3, and pump is used to empty the

*asked by Lauren on February 23, 2015* -
## Chemistry (Help)

Calculate the DHrxn of C6H12O6 (s) + O2 (g) --> CO2 (g) + H2O (l) with DHf. C6H12O6(s) -1260.04 O2(g) 0 CO2(g) -393.5 H2O(l) -285.840 I balanced the equation: C6H12O6 (s) + 6O2 (g) --> 6CO2 (g) + 6H2O (l) and my work: DHrxn = [(6x -393.5)+(6x -285.840)] -

*asked by Anonymous on November 17, 2015* -
## algebra

Your friend has a cube of gold. You have a cube of gold that weighs twice as much. Your cube is 1.26as long as your friends, and it has 1.587 times the surface area. You can imagine how this would work with a spherical diamond, so we won't repeat that part

*asked by chris on October 8, 2010* -
## Physics

A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. If the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied? Assume the braking force

*asked by Kayla on November 12, 2016* -
## stiochiometry

Hello! This is my take home final for my chemistry class and I can use any resources to help me solve the questions. Can someone help me get started on all of them? Thanks… (note: he wants us to solve them using stoichiometry) 1. The resting calorie use

*asked by Roberta on May 16, 2008* -
## Help

I have tried to solve this problem several time sto get the answer and I am lost. Train A and B are traveling in the same direction on parallel tracks. Train A is traveling at 80 miles per hr abd train B is traveling at 90 miles per hr. Train A passes a

*asked by Tracy on January 20, 2011* -
## 8th Grade Algebra

These are extra credit questions, and I just want to know how to solve them. 1) The sum of two-digits of a two digit number is 14. If the number represented by reversing the digits is subtracted from the original number, the result is 18. What us the

*asked by Jenny on March 4, 2009* -
## English

Pharmacists are the medication experts. They advise doctors, nurses, and patients on the correct drug dosage for a patient's weight, age, health, and gender; on interactions between drugs; on side effects; on drug alternatives; on costs; and on ways to

*asked by Anonymous on April 21, 2011* -
## Science (Please Respond SOON!)

I think I'm using the wrong formulas or SOMETHING... Here's the question: "Two equal charges are separated by 3.7 ´ 10^-10 m. The force between the charges has a magnitude of 2.37 ´ 10^-3 N. What is the magnitude of q on the charges?" Here's my work: F =

*asked by Judy on May 7, 2009* -
## Physics (SO CONFUSED!!!)

I think I'm using the wrong formulas or SOMETHING... Here's the question: "Two equal charges are separated by 3.7 ´ 10^-10 m. The force between the charges has a magnitude of 2.37 ´ 10^-3 N. What is the magnitude of q on the charges?" Here's my work: F =

*asked by Judy on May 7, 2009* -
## Physics

The wind is blowing from west to east at 35 mph and an eagle in that wind in flying at 22 mph relative to the air what is the velocity of this eagle realtive to a person standing on the ground if the eagle is flying (a) from west to east relative to the

*asked by Sarah on June 4, 2009* -
## math

In which of the following situations is there most likely to be correlation without causation? the number of people who work in an office building and the number of desks in the office building the number of cars in a city and the number of police officers

*asked by dianni on March 8, 2019* -
## Math

Part 1: Write two conditional statements for which the converse is true. 1. Statement: 2. Converse: 3. Statement: 4. Converse: Part 2: Write two conditional statements for which the converse is false. 5. Statement: 6. Converse: 7. Statement: 8. Converse:

*asked by Kathy on January 19, 2011* -
## college

Which of the following would NOT be considered discrimination? 1. Sue believes poor people are criminals. 2. Sue refuses to give Jane a ride to work because Jane is poor. 3. Jane, who is poor, vandalizes the cars of rich people who she believes are snobs.

*asked by dean on February 5, 2009* -
## English

Which of the following is the bst example of a citation reference for a work by one author? a. Marks 1999 B. (Marks, Bill.1999) c. (Marks-1999) d. Marks et.al. 1999 e. none of the above I know that C and D are wrong I think A is wrong as it has no

*asked by Zack on July 9, 2010* -
## I need help..

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is

*asked by Morgan Stevenson on January 7, 2013* -
## Will somebody help me please?

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is

*asked by Morgan Stevenson on January 8, 2013* -
## Please guys. Help me out.

1. Diarrhea can be caused by a change in diet and different minerals in the water. True False 2. Fusion produces less radioactivity than fission. True False 3. Wise travelers eat only cooked vegetables in underdeveloped areas. True False 4. The kilogram is

*asked by Morgan Stevenson on January 7, 2013* -
## Science Somebody Help Me Please..I have a deadline

*asked by Morgan S on January 7, 2013* -
## ART HAVING HARD TIME

1. A curator decides to display an eighteenth-century painting in a windowless room with controlled temperature and humidity. Pick the answer that best describes the reasons for her choice: (1 point) 1)The curator wants to make sure that the temperature

*asked by Taylor on January 22, 2015* -
## History

How did the Aztecs increase their economic growth after conquering territories? They removed existing rulers from the conquered lands to ensure they had direct control of their enemies' trade routes. They forced all the people they conquered to trade

*asked by Belaruss on January 11, 2016* -
## Math

Okay so I'm trying to work out how many mm of rain fell in a certain area. I've got the total volume/capacity that fell (3.51125KL) and the total area that it fell in (8558.25m). My formula is Total Rainfall = rainfall mm x area covered How would I make

*asked by Tatiana on April 23, 2011* -
## Math

Hi guys! I am desperately in need of help. I really need to do good on this test but I am uncertain if I am doing this portion correctly. Can someone check my work? 11. Which inequality matches the graph? (The dot on the graph is at 1 and the arrow is

*asked by Ruby on January 13, 2017* -
## Chemistry

Estimate the solubility of TISCN in a solution of which ionic strength is 1.265e-2M at 25 degree and Ksp=1.6e-4. I do not know why Prof. gives me ionic strength? In the next question, Prof. said " For a sparingly soluble ionic compound of type AB the

*asked by Lyna on March 24, 2015* -
## Chemistry

Which of the following result in buffered solutions when equal volumes of the two solutions are mixed? a.) .1 M HCl and .1 M NH4Cl b) .1 M HCl and .1 M NH3 c.) .2 HCl and .1 M NH3 d.) .1 M HCl and .2 M NH3 By def. I know that a buffed solution is made from

*asked by Marcus on April 9, 2013* -
## math

Mimi's market sold 24 heads of lettuce one morning. That afternoon 2/7 of the remaining heads of lettuce were sold. The number of heads left is now 1/2 of the number the market had at the beginning of the day. How many heads of lettuce were there at the

*asked by Zachary on December 16, 2015* -
## Chemistry

What is the reduction half-reaction for the reaction between iron(II) sulfate and potassium permanganate in a sulfuric acid solution? 5Fe2+(aq) + MnO4–(aq) + 8H+(aq) --> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) a. MnO4– + 3e– -->Mn2+(aq) + 4H2O b. MnO4–(aq)

*asked by Husy on March 23, 2010* -
## Chemistry

What is the reduction half-reaction for the reaction between iron(II) sulfate and potassium permanganate in a sulfuric acid solution? 5Fe2+(aq) + MnO4–(aq) + 8H+(aq) --> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) a. MnO4– + 3e– --> Mn2+(aq) + 4H2O b. MnO4–(aq)

*asked by Zakaria on March 23, 2010* -
## Math

Which of the following values best approximates of the length of c in triangle ABC where c = 90(degrees), b = 12, and B = 15(degrees)? c = 3.1058 c = 12.4233 c = 44.7846 c = 46.3644 In triangle ABC, find b, to the nearest degree, given a = 7, b = 10, and C

*asked by Max on January 26, 2018* -
## Math

Lawrence records the number of minutes he reads each day show below Day 1: 75 mins Day 2: 30 mins Day 3: 25 mins Day 4: 50 mins Day 5: 80 mins How many minutes must Lawrence read on the sixth dat of have mean of 55 minutes read for the 6 day?

*asked by Dani on April 18, 2011* -
## Physics

A batted baseball leaves the bat at an angle of 30.0 degrees about the horizontal and is caught by an outfilder 375 ft from home plate at the same height from which it left the bat. (a) what was the initial speed on the ball? (b) how high does the ball

*asked by Sarah on June 4, 2009* -
## Chemistry

In the laboratory you will be provided with a 1.0 x 10-5 M primary stock solution of fluorescein (MW=332.31g/mol). The calibration curve should include a blank, 0.025, 0.05, 0.075, 0.10, 0.15, and 0.25 micromolar fluorescein solutions. Since you will be

*asked by Bruce on October 18, 2016* -
## Maths!! Sinusoidal!

1.Jim and Chana are riding the Ferris wheel like the one diagrammed here. It is supported on a triangular base having a bottom of 18.460m and sides of 14.359m. During the ride Jim observed Chana, while Chana observed that at the bottom of the ride she

*asked by Moe on July 25, 2014* -
## Physics

A force of 2N will stretch a rubber band 2 cm. Assuming that Hooke's law applies, how far will a 4N force stretch the rubber band? How much work does it take to stretch the rubber band this far?

*asked by T.J. on May 2, 2014* -
## math (percent)

Both Sam and Sylvia work at a bookstore. During a sale, Sam sold 15 percent more books than Sylvia. If Sam sold 69 books, how many books did Sylvia sell? A. 60 C. 54 B. 58 D. 50 B

*asked by Trevor on May 15, 2009* -
## math

Workers A and B working together can finish a job in 8 hrs.If they work together for 6 hrs.,after which worker A leaves,then worker B needs 9 more hrs to finish the job.How long does it take worker A to do the job alone?

*asked by Queen on July 26, 2016* -
## Accounting

The capital accounts of Hawk and Martin have balances of $160,000 and $140,000, respectively, on January 1, 2010, the beginning of the current fiscal year. On April 10, Hawk invested an additional $10,000. During the year, Hawk and Martin withdrew $86,000

*asked by Big Dada on March 31, 2014* -
## Science

Where can I find a biography on William Harvey? http://www.accessexcellence.org/RC/AB/BC/William_Harvey.html http://www.accessexcellence.org/RC/AB/BC/William_Harvey.html The other two posts don't seem to work right. Try this one.

*asked by Nicky on October 5, 2006* -
## calc: relative error

The circumference of a sphere was measured to be 77 cm with a possible error of .8 cm. Use differentials to estimate the maximum error in the calculated surface area. Estimate the relative error in the calculated surface area. please help me..thank you!

*asked by amanda on October 31, 2006* -
## Mathematics

15 liters of water is poured from container A to Container B and 10 liters of water is poured from container A to container C. If C had 20 liters of water less than A, how many more liters of water does C have than A? A. 10L C. 20L B. 15L D. 25L What

*asked by Mary Rose on January 27, 2017* -
## MATH

THE AVERAGE WIND SPEED INCREASED 19 MILES/H FROM 8 AM TO 12 NOON. THE AVERAGE WIND SPEED DECREASED 5 MI MI/H FROM 12 NOON TO 4 PM. AT 4 PM, THE AVERAGE WIND SPEED WAS AT LEAST 32 MI/H. WHAT IS THE MINIMUM VALUE OF THE AVERAGE WIND SPEED AT 8 AM? NEED TO

*asked by Justin on November 30, 2011* -
## economic

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of

*asked by Sue on May 25, 2010* -
## economics

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of

*asked by sue on May 25, 2010* -
## computer science

in visual logic You will need to design an application that it will prompt a user for their hourly pay rate, their hours worked, and whether they are single, married, divorced, or widowed. It will then calculate their gross and net pay. If they work more

*asked by carol on May 22, 2011* -
## economics

1)Robert received a $100 gift certificate to a bookstore a year ago. The economy has been in an inflationary period for the last year. This gift certificate is A. not expressed in either real or nominal terms since it is not money. B. adjusted in terms of

*asked by Sue on May 25, 2010* -
## Macro economics

*asked by Sue on May 25, 2010* -
## physics..please help?

At rest, a car’s horn sound at the note A(440Hz) The horn is sounded while the car is moving down the street. A bicyclist moving the same direction with one third the car’s speed hears a frequency of 415 Hz. What is the speed of the car? Is the cyclist

*asked by sammy on April 10, 2007* -
## chemistry. please help drbob222

One of the reactions involved in the smelting of copper sulfide ores involves copper (I) oxide and copper (I) sulfide: 2Cu2O2 + Cu2S ---> 6Cu + SO2 Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide A) determine which

*asked by Rose on December 7, 2014* -
## Math

Sam has 9 models. Bill has twice as many models as Jim. Jim has three less models than Sam. Show how to find the difference between the number of models Bill has and the number of models Sam has.

*asked by Jaer on April 19, 2011* -
## ALGEBRA

I went to the car show this weekend and that is what I saw: Every red car was a sport car, but I found it odd that half of all the blue were sports cars. A salesman told me that half of all the sports car were red. I counted 40 blue cars and 30 red cars.

*asked by el chave del ocho on February 23, 2012* -
## statistics

For any married couple who are members of a squash club, the probability that the husband has a degree is 2/4 and the probability that the wife has a degree is 1/4. The probability that the husband has a degree given that his wife has a degree is 3/9. A

*asked by Nabiha on December 3, 2011* -
## American Government

Check answers? 1) When the Framers created the legislative branch of government, why did they decide that this branch would have a bicameral structure? A) They wanted to ensure equal representation for each of the thirteen states. B) The Framers formed a

*asked by Scarlett on October 5, 2016* -
## math

Jose wants to find how many gallons of water he needs to fill his cube-shaped aquarium. One side of his aquarium is 4 feet long. a)Write and solve an expression to find the volume of Jose's aquarium. b)One cubic foot is equal to 7.48 gallons of water. How

*asked by kyle on March 10, 2015* -
## Science

1. The ? is the part of an experiment that is not being tested and is used for comparison. (7 words) 2. The ? describes the steps you use during an experiment. (9 words) 3. After an experiment, scientists write a ? which summarizes their experiment and

*asked by Happyface on August 26, 2008* -
## algebra

5.A) Kwame sells ice cream cones at the country fair. He has to rent the equipment for $29 and spend $0.43 on ingredients for each cone. How many ice cream cones must he sell at $1.10 each in order to make a profit? A)Wrie an inequality that represents how

*asked by Samantha on February 16, 2009* -
## Binomial and Poisson distribution

A machine produces ribbon in which flaws occur randomly at an average rate of one flaw in 100m. Find the probability that there are 3 or more flaws in a randomly chosen 200m of ribbon. Find the length of ribbon such that the probability that it contains no

*asked by Kelvin on June 1, 2013* -
## Math Challenge

Please help if can with the following problem, I have submitted the answers to the other problems like this one and were told they were incorrect. I was excited and greatful for receiving both answers because I have no clue how to work the problem. 1st

*asked by Please,Please Help on January 26, 2012* -
## Chemistry

A 1.0-mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.010 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. a color change occured after 40 seconds. the rate of reaction is measured by the disappearance of HIO3. got the

*asked by Anonymous on February 21, 2013* -
## Physics

Running on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 19 minutes. Part A Determine the drag force on the runner during the race. Suppose that the

*asked by Anonymous on September 27, 2016* -
## Math, Algebra,

Help! I can't understand or find out the answer, I tried but I keep getting lost! George rides a cab to work 3 days a week. He pays $3.50 for the cab to pick him up. He pays an additional fee for each mile driven. In one week, George paid $35.25. If he

*asked by Anonymous on January 11, 2017* -
## Chemistry (Check)

Calculate the DHrxn of C6H12O6 (s) + O2 (g) --> CO2 (g) + H2O (l) with DHf. C6H12O6(s) -1260.04 O2(g) 0 CO2(g) -393.5 H2O(l) -285.840 I balanced the equation: C6H12O6 (s) + 6O2 (g) --> 6CO2 (g) + 6H2O (l) and my work: DHrxn = [12mol(-393.5+(-285.840))] -

*asked by Anonymous on November 17, 2015* -
## math (desperate help, please.

A long, straight wire of length 2L on the y-axis carries a current I. According to the Biot-Savart Law, the magnitude of the magnetic field due to the current at a point (a,0) is given by B(a)= (mu sub 0 multiply by I) divided by 4pi times the integral

*asked by sathira on February 4, 2016* -
## Calculus PLEASE HELP! PLEASE PLEASE PLEASE

A long, straight wire of length 2L on the y-axis carries a current I. According to the Biot-Savart Law, the magnitude of the magnetic field due to the current at a point (a,0) is given by B(a)= (mu sub 0 multiply by I) divided by 4pi times the integral

*asked by Sathira on February 4, 2016* -
## Algebra

Myra uses an inverse variation function to model the data for the ordered pairs below. (2, 30), (3, 20), (4, 15), (5, 12), (6, 10) Which statement best explains whether an inverse variation function is the best model for the data? An inverse function is

*asked by Melanie on July 7, 2014* -
## chemistry

Calculate the volume ( mL ) of the solute C2H5OH and the mass ( g ) of the solvent diethyl ether that should be mixed to produce 3.46 kg of a solution that is 1.31 m C2H5OH. volume ( mL ) of the C2H5OH mass ( g ) of the (C2H5)2O Molar Mass (g/mol) C2H5OH

*asked by Judy on June 3, 2010* -
## chemistry

1. in which group is bromine found(on the periodic table)? 2. what is the name of its chemical family? 3. in which group is magnesium found? 4. what is the name of its chemical family? 5. in which group is potassium found? 6. what is the name of its

*asked by michelle on February 25, 2007* -
## calculus

A format for textbook page layouts is to be chosen so that each printed page has a 4-cm margin at the top and at the bottom and a 2-cm margin on the left and right sides. The rectangular region of printed matter is to have an area of 800 sq. cm. Find the

*asked by maricela on May 10, 2007* -
## Physics

A flat (unbanked) curve on a highway has a radius of 200 m. A car rounds the curve at a speed of 26.0 m/s. What is the minimum coefficient of friction that will prevent sliding? Our professor didn't even go over this, and it is way more complex than

*asked by Josh on September 22, 2006* -
## Chemistry

A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold frequency of the metal is

*asked by Nora on April 15, 2015* -
## Chemistry

A photoelectric experiment is performed by separately shining a laser of 450 nm (blue light) and 560 nm (yellow light) on a metal surface and measuring the number and kinetic energy of the ejected electrons. The threshold frequency of the metal is

*asked by Nora on April 15, 2015* -
## algebra

1. A rectangular wooden frame has side lengths 5x and 7x + 1. The rectangular opening for a picture has side lengths 3x and 5x. -What is the area of the wooden part of the frame? Write your answer in factored form. -How can drawing a diagram help you solve

*asked by SkatingDJ on March 21, 2015* -
## chemistry

What is the pH of the solution created by combining 11.40 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? Complete the table below: Note: Make simplifying assumptions, do not use the quadratic formula.

*asked by Billy on October 30, 2011* -
## Dr. Bobb222

When you get a chance: If the pure liquid vapor pressure of benzene is 155 torr and the pure liquid vapor pressure of chloroform is 333 torr, then what is the total vapor pressure at 30°C of a solution of 9.26 g of benzene (C6H6) and 4.26 g of chloroform

*asked by Devron on August 5, 2013* -
## Math

1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent two hours building a

*asked by Sue on April 1, 2014* -
## Math

1. Mackenzie spent a lot of time on her project for Columbus Day. On Monday she worked for 2 hours and 33 minutes on making a poster. On Tuesday she worked for 1 hour and 28 minutes drawing a picture of Columbus. On Wednesday she spent two hours building a

*asked by Anonymous on April 1, 2014* -
## Physics-Totally lost

I'm totally lost on this one- the earth is surrounded by an electric field with a strenth of 100 N/C at the surface. Its electric properties are the same as a point charge located at its center. How would the gravatational force and electrical force

*asked by Rafaela on April 7, 2011* -
## Pre AP-science

A boy of mass 60 kg stands on a boat of mass 250 kg. This system is stationary. From the boat, the boy throws a rock of mass 1 kg into the water with a velocity of 10 m/s. What is the magnitude and direction of the boat's motion as a result of this? A) The

*asked by sarakate on November 20, 2018* -
## Statistics

In the case of Castaneda vs Partida, it was noted that although 80% of the population in a Texas county was Mexican-American, only 39% of those summoned for grand juries were Mexican-American. Assume that 12 jurors are to be summoned from a population that

*asked by tamar on November 17, 2017* -
## math

How can I show a bar model for this problem? Naomi Macy and Sebastian have 234 stamps in all. Naomi gives 16 stamps to Macy and 24 stamps to Sebastian. Naomi then has 3 times as many stamps as Macy, and Macy has twice as many stamps as Sebastian. how many

*asked by jill on October 25, 2015* -
## Maths / physics

Calculate the rest mass (In grams) of an object whose rest energy is equal to the energy released by a tonne of tnt the energy liberated by 1 g of tnt = 4kJ Rest energy = moc 2 1 tonne of tnt equals 10^6 x 4kJ = 4 x 10^6 kJ x (3.0^8)sqrd = 3.6 x 10^23kJ is

*asked by Wayne on August 27, 2013* -
## physics

In Fig. 8-49, a block slides down an incline. As it moves from point A to point B, which are 3.0 m apart, force acts on the block, with magnitude 3.8 N and directed down the incline. The magnitude of the frictional force acting on the block is 5.3 N. If

*asked by Anonymous on October 14, 2010* -
## calculus

Consider the function f(x) = 1/x on the interval [ 4 , 11 ]. (A) Find the average or mean slope of the function on this interval. Average Slope =_______ (B) By the Mean Value Theorem, we know there exists a c in the open interval ( 4 , 11 ) such that f'(

*asked by sze on January 26, 2018* -
## Math-check my work please??

Write an equation, in point-slope form, for the line that is perpendicular to y – 10 = 3/2 (x – 4) and that passes through the point (4, 2). My Answer: Formula for point-slope form; y – y = m(x – x) Insert y and x value; y – 2 = m(x – 4) If the

*asked by Scarlet (Scar for short) on March 21, 2016* -
## physics

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 12 mC moves from a distance of 7 cm to a distance of 18 cm. In mJ, how much work is done by the electric field?

*asked by Anonymous on February 17, 2011* -
## physics

A 3 lb bucket containing 40 lb of water is hanging at the end of a 20 ft rope that weighs 4 oz/ft. The other end of the rope is attached to a pulley. How much work is required to wind the length of rope into the pulley, assuming that the rope is wound onto

*asked by Anonymous on September 21, 2012* -
## calculus

how do you calculate the instantaneous rate of change. is that the derivative. also: if f is the antiderivate of (x^2)/(1+x^5 such that f(1)=o then f(4)=? How would i find the integral of that? i don't even know what the first step is to get the answer.

*asked by david on April 13, 2007* -
## Science - Proof of Propositional Logics

I am being asked if I can prove P, L, Q? (without using resolution-refutation). Propositional clauses: 1. P -> V 2. !P -> (!V and F) 3. (V or F) -> Q 4. Q -> L From here I was able, with resolution-refutation, to determine that we cannot prove P but we

*asked by Jack on February 9, 2008* -
## ENGL

These three questions I am having difficulty in solving. Can you help me here. Question 1 - a) Whenever children in the United States turn on the tv, B) they are more likely to encounter violence on the screen. A is an independent clause. A is a dependent

*asked by David on March 3, 2011* -
## MATH

A women is taking a lesson in a circular swimming pool. she starts at one edge of the pool and swims for 12 meters in a straight line till hits the edge of the pool. she turns and swims another 5 meters and again hits the edge of the pool. she realizes

*asked by Adham on January 18, 2016*

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