# suppose a map is scaled so that a half inch represents 25 miles. how many inches of the map represents 87 1/2 miles?

35,906 questions, page 254
1. ## Language Arts

Passage A Avalanches are caused by a variety of conditions. When the temperature is cold and snow falls, the snowsticks to the ground. However, when the air temperature changes, the snow may slide away in pieces or slabs. Basically an avalanch happens when

asked by Callie on December 1, 2014
2. ## Math 115

Country Upper B has a population of approximately 276.5 million people and a total land area of about 3150.4 thousand square miles. What is the population density of Country Upper B? Round your answer to the nearest person. I know you need to divide

asked by Brita on October 2, 2016
3. ## MaTh

Need help with another word problem The swim team sold tickets to their skit night to earn money to go to the finals in another city that was 200 miles away. They sold 4 adult tickets for each child's ticket. If they sold 155 tickets, how many adults

asked by Amy on August 19, 2013
4. ## calculus

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by jasmin on October 10, 2017
5. ## Calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Sam on October 26, 2010
6. ## Calc

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Pierre on October 28, 2010
7. ## algebra

Two ships make the same voyage of 3000 nautical miles. The faster ship travels 10 knots faster than the slower one (a knot is 1 nautical mile per hour). The faster ship makes the voyage in 50 hr less time than the slower one. Find the speeds of the two

asked by Krystal on February 21, 2012
8. ## calculus

(1 pt) At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 21 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile

asked by bill nye on March 10, 2009
9. ## English

Mr. And Mrs. Sanchez were married On Nov 12 1988 Comma after 12 We met on Tuesday Nov 5 in Austin Texas Comma after Tuesday and Austin It is almost two thousand miles from Atlanta Georgia to Los Angeles California Comma after Atlanta and Angeles All of

asked by Jerald on December 5, 2012
10. ## Math

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Salman on October 16, 2009
11. ## Calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on April 3, 2010
12. ## Math

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Ramin on October 9, 2017
13. ## calculus 1

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on March 25, 2010
14. ## calc

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by john smit on October 29, 2014
15. ## CALCULUS

At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by CRYSTAL on October 24, 2011
16. ## calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Parker on September 24, 2009
17. ## calculus

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Georgia on October 20, 2009
18. ## calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 17 knots and ship B is sailing north at 20 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Parker on September 24, 2009
19. ## calculus

A power station is on one side of a river that is 0.5 mile wide, and a factory is 5.00 miles downstream on the other side of the river. It costs \$15 per foot to run overland power lines and \$23 per foot to run underwater power lines. Estimate the value of

asked by Angel on September 22, 2011
20. ## Cal 1

(1 pt) At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 20 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile

asked by TJ on November 3, 2010
21. ## math algebra

how would i do this problem elina and teresa raced on their bikes to the library after school. they both left at 3:00 pm and bicycled along the same trail elina rode at the speed of 12 miles an hour and teresa rode at the speed of 9 mph. elina got there

asked by bob on November 4, 2010
22. ## Calculus

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Samuel on March 1, 2010
23. ## calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on November 4, 2012
24. ## Calculus

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 22 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on October 31, 2010
25. ## math

At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by bob dylan on March 26, 2010
26. ## Calculus

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 19 knots and ship B is sailing north at 24 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Alessandra on October 27, 2014
27. ## calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on November 4, 2012
28. ## calculus 1

At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 5 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by mona on March 25, 2010
29. ## Maths

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 16 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 7 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Salman on October 15, 2009
30. ## calculus 1

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 19 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by mona on March 25, 2010

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by ALI on February 28, 2014
32. ## Math!

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 16 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by <3 on June 4, 2009
33. ## calculus

At noon, ship A is 10 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 3 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on November 4, 2012

At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 24 knots and ship B is sailing north at 22 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Randall on March 15, 2009
35. ## math

At noon, ship A is 40 nautical miles due west of ship B. Ship A is sailing west at 18 knots and ship B is sailing north at 23 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

36. ## Calc

At noon, ship A is 50 nautical miles due west of ship B. Ship A is sailing west at 15 knots and ship B is sailing north at 18 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Heather on February 19, 2012
37. ## Calculus

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by Anonymous on July 28, 2013
38. ## calculus

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 25 knots and ship B is sailing north at 25 knots. How fast (in knots) is the distance between the ships changing at 6 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by remy on May 14, 2012
39. ## CAL

At noon, ship A is 30 nautical miles due west of ship B. Ship A is sailing west at 21 knots and ship B is sailing north at 15 knots. How fast (in knots) is the distance between the ships changing at 4 PM? (Note: 1 knot is a speed of 1 nautical mile per

asked by LAURA on July 10, 2011
40. ## math

Ranch home is 2100 sq ft (70 x 30) Assume the climate yields 30in of rainfall per year. Baths, showers, faucets use 40% of this water, of which 80% is recycled to the indoor garden (50 ft x 20 ft) How much water in INCHES will the 50ft x 20 ft indoor

asked by Nabil on September 21, 2014

1) of the dolls in mo's doll collection, 1/5 have red hair. of these 3/4 have green eyes. what fraction of Mo's dolls collection have both red hair and green eyes? 2) ( Use measurement conversions) find 1/2 of 1/4 of a gallon. 3) Cheryl is organizing her

asked by catalina on October 1, 2012
42. ## Trigonometry

A point on the rim of a wheel of unknown radius in a pulley system has a velocity of 16 in/min. The wheel is making 4 rpm. If the radius of the other wheel is 8 inches, find the 8" wheel's rpms and the unknown wheel's radius. I got a radius of about 0.637"

asked by MB on February 13, 2017
43. ## acc

Can anyone let me know if I have these correct and if not what am I doing wrong. 1. For each of the following items, indicate whether its amount (i) affects the bank or book side of a bank reconciliation and (ii) represents an addition or a subtraction in

asked by Anonymous on February 25, 2009
44. ## accounting

Can anyone let me know if I have these correct and if not what am I doing wrong. 1. For each of the following items, indicate whether its amount (i) affects the bank or book side of a bank reconciliation and (ii) represents an addition or a subtraction in

asked by Anonymous on February 25, 2009
45. ## accounting

Can anyone let me know if I have these correct and if not what am I doing wrong. 1. For each of the following items, indicate whether its amount (i) affects the bank or book side of a bank reconciliation and (ii) represents an addition or a subtraction in

asked by Anonymous on February 25, 2009
46. ## ap chemistry help!!!!

Ive been absent from class because of the flu so i don't have a clue how to figure these out! Help! due tomorrow at 12! 1).Suppose that 135 g of ethanol at 23◦C is mixed with 255 g of ethanol at 75◦C at constant atmospheric pressure in a thermally

asked by harry on October 24, 2012
47. ## Quick English check

Please check to see if I have these words in the correct sentences. Correct me if I'm wrong! :) 1. The defendants attorney objected to the plaintiff's ASSERTION, claiming it was hearsay. 2. The news media PROMULGATED the results of the election. 3. I tried

asked by Grace on August 31, 2015
48. ## dog behavior

please check my answer thanks :) If you're going to be teaching a dog a lot of different basic commands, what would be best to use as a treat? A. Small scoops of canned dog food B. Small pieces of rawhide C. Half of an ordinary dog biscuit D. An extra

asked by Maria on July 26, 2008

3.) The demand equation for a certain product is q=500-40p+p^2 here p is the price per unit (in dollars) and q is the quantity of units demanded (in thousands). Find the point elasticity of demand when p = 15. If this price of 15 is increased by 1/2%, what

asked by pypski on December 15, 2016
50. ## Math

Using Proportionality A correlation L cube How do figure out the average heights and weights for sheep and cows? Also. for Bald Eagles and Canada Geese. Dairy Cow 5 to 6 feet tall at the shoulder/weight 500lbs Bighorn Sheep Shoulder Height: 2.5 to 3.5"

asked by Frank on November 27, 2011
51. ## Algebra

Need help with these-- 6. Chase scored 14 points on Monday, and he doubled his score each day thereafter. How many points did he score on Thursday? 8. Find a solution to the following system of equations using elimination: -5x + y = -5 -4x + 2y = 2 21.

asked by mysterychicken on June 11, 2010
52. ## Physics

Suppose a chinook salmon needs to jump a waterfall that is 1.32 m high. (a) If the fish starts from a distance 1.24 m from the base of the ledge over which the waterfall flows, find the x- and y-components of the initial velocity the salmon would need to

asked by Jay on February 17, 2016
53. ## Stats

Suppose that diastolic blood pressure in hypersensitive women centers at 100mmHg and has a standard deviation of 16mmHg and it is normally distributed. What is the probability of randomly selecting a woman with a diastolic blood pressure less than 92mmHg?

asked by Kleena on September 30, 2016
54. ## Physics

Suppose a light wave is in the visible spectrum, with frequency 740 THz(which will have a deep purple color). What will be the ratio of the electric to magnetic fields constitute the light wave? What fraction of the total energy is conveyed by the electric

asked by M on May 7, 2015

Suppose a country announces that it is moving toward free trade by reducing its tariffs on intermediate inputs used by its production sector, while at the same time maintaining its tariffs on final goods. Does this policy change really move the country

asked by Mary on July 25, 2010
56. ## economics

Suppose that the consumption function is C=100+.8(y-t). Initially investment and government expendtures are I=75 and G=150 and taxes are T=50. 1.Depict this economy using the keynesian cross. calulate the initial equilibrium income. how much will income

asked by Jonathan on February 6, 2010
57. ## International Econ

Suppose a country announces that it is moving toward free trade by reducing its tariffs on intermediate inputs used by its production sector, while at the same time maintaining its tariffs on final goods. Does this policy change really move the country

asked by Mary on July 25, 2010
58. ## physicsss ;o

a 12 V car battery is found to be capable of storing 2.0 kW*h of eletrical energy. for a certain eletric car, it is necessary to develop 10 kW of power to drive at 20 km/h. a)suppose that the car has 10 such batteries. how long(hours)could it run if all 10

asked by monee' on December 13, 2011
59. ## Economics

Suppose the market for the magazine is in equilibrium. Some students insist on raising the cover price by \$1 and printing the same quantity. What is likely to happen? A. The demand for the magazine will go up. B. There will be a shortage of 150 magazines.

asked by Anonymous on April 30, 2012
60. ## chemistry

Suppose a student diluted and titrated a bleach unknown. A single titration was performed which required 14.42 mL of 0.100 M Na2S2O3. The density of the original, undiluted bleach unknown was 1.042 g/mL. calculate the number of moles of ClO- in the sample

asked by Morgan on October 27, 2013
61. ## statistic

Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125 points) are normally distributed, with mean equal to 112 and standard deviation equal to 12. Find the probability that the sample

asked by Coco on November 8, 2012
62. ## Physics Circular Motion

A swing ride at a carnival consists of chairs that are swung in a circle by 13.5-m cables attached to a vertical rotating pole. Suppose the total mass of a chair and its occupant is 170 kg, the angle θ = 53° with the vertical pole. Find the speed of the

asked by Jayesh on February 20, 2015
63. ## Math

Suppose Kalvin flipped a coin to determine his breakfast cereal every day starting on his 12th birthday and continuing until his 18th birthday. How many times would you expect him to eat Cocoablast cereal. I know 6 years times 365 days is 2190 what do I do

asked by Mark on March 21, 2011
64. ## physics

At the Indianapolis 500, you can measure the speed of cars just by listening to the difference in pitch of the engine noise between approaching and receding cars. Suppose the sound of a certain car drops by a factor of 2.30 as it goes by on the

asked by steve on April 1, 2011
65. ## Meds.. Human Anatomy?

Suppose that a batch of controlled-release pills intended to be taken every 12 hours were accidentally manufactured without their thick coating. What would be most likely to happen to someone who took one of these pills? The medication would be absorbed

asked by rawr... im a dinosaur.... rawr on November 12, 2012

A pair of jeans is on sale for 25% off the original price. Which expression represents the sale price? If the original price of the jeans is \$40, evaluate the expression to findicate the sale price.

asked by Kitty on September 9, 2016
67. ## History

which suggest reasons that President Kennedy decided to use US military intervention in Cuba? Multiple choice, select all that apply 1. Cubas Secret US invasion plans were leaked to the press 2. Cuba lies 90 miles from the coast of the United States 3. US

asked by Kate on June 14, 2018
68. ## math

Cells ina certain plant can triple in number every 15 minutes.How many times greater is the number of plant cells after an hour and a half then the number of cells the plant had origanally?

asked by Caitee on January 7, 2013
69. ## Math

A landlady currently rents each of her 50 apartments for \$1300 per month. She estimates that for each \$100 increase in rent, two additional apartments will remain vacant. a. Construct a function that represents the revenue R(n) as a function of the number

asked by Anne on November 14, 2016
70. ## math

the numerator of a fraction is 3 less than the numerator.If half of the numerator is added to the numerator and the denominator,the resulting fraction is 1/2.Find the the fraction.

asked by hans on August 14, 2016
71. ## Math

Sally's age is 12 years plus half her age. How old is she? Billy is twice as ld as Sally was when billy was as old as Sally is now. And the total ages is 28 how old are they?

asked by Anjanique on February 8, 2011
72. ## Math

They have emptied 1/2 to an oil tank; then they emptied another half of what was left; then the rest of 11/15 emptied. Now, there are 26 liters in the tank. How many liters were at first?

asked by Ayesha on October 3, 2016
73. ## mathematics

Ruth has \$130 in all. Kevin has \$115 in all. If Ruth has 1 and a half times as much money as kevin, how much money does ruth have?

asked by Natasha on January 3, 2016
74. ## math

the sum of numerator and denominator is 3 less than twice the denominator.If the numerator and denominator is decreased by 1 , the numerator becomes half the denominator.Find the fraction?

asked by amit on June 26, 2013
75. ## Maths

At 7pm the outdoor temperature was -12degrees celsius. By 11pm the temperature in degrees celsius had dropped x degrees celsius. Which expression represents the temperature reading at 11pm. a -12-x b -12+x c-12 d -12x e 12 a is my answer A total of m

asked by Claire on August 14, 2013
76. ## math

Which statement best explains if the graph correctly represents the proportional relationship y = −2x? A coordinate plane is shown. Points are graphed at 2 comma 4 and negative 1 comma 2. The points are joined by a line. No, the points shown would not be

asked by Math help on November 8, 2017
77. ## college algebra

The number of unwatched shows in Sylvia's DVR is 90. The number grows by 15 unwatched shows per week. The function N(t) = 90 + 15t represents the relation between the number of unwatched shows, N, and the time, t, measured in weeks. a. Determine the

asked by Laisha on October 6, 2018
78. ## Trigonometry

Suppose that Lance Armstrong1 is using a 180 mm chain ring and pedaling at a rate of 80 revolutions per minute. The wheels on his road bike have a diameter of 622mm. What diameter sprocket on the rear wheel does he need to maintain a speed of 30 kilometers

asked by Rebekah on November 6, 2014
79. ## 5th grade math problem

Adam, Sam, and Eddie have to meet their boss at 3:00 in the office 9 miles apart from their home, and they must be arrive in time for the appointment. Adam had a bicycle, Sam had a skateboard,and Harry had no transport. So they have to share. so they left

asked by victoria on October 26, 2014
80. ## math problem

Adam, Sam, and Eddie have to meet their boss at 3:00 in the office 9 miles apart from their home, and they must be arrive in time for the appointment. Adam had a bicycle, Sam had a skateboard,and Harry had no transport. So they have to share. so they left

asked by victoria on October 26, 2014
81. ## Hisory

Which suggest reasons that President Kennedy decided to use US military intervention in Cuba? (Select all that apply.) A. JFK had been tracing the global spread of Communism. B. Cuba lies 90 miles from the coast of the United States. C. US spy planes

asked by Sergio on February 11, 2019
82. ## Math

A rocket shoots straight up from the launch-pad. Five seconds after lift-off, an observer 2 miles away notes that the rocket's angle of elevation is 3.5 degrees. Four seconds later the angle of elevation is 41 degrees. How far did the rocket rise during

asked by Lianne on September 29, 2012
83. ## Finance

Suppose the firm in paid out (sales of \$586,000, costs of \$247,000, depreciation expense of \$43,000, interest expense of \$32,000, and a tax rate of 35 percent) \$73,000 in cash dividends. What is the addition to retained earnings?

asked by Stephanie on September 2, 2015
84. ## math

Amy & Ashley bike along the same trail. Amy bikes the entire trail at 20mph & Ashley bikes at 15mph. Amy finishes 8 minutes before Ashley. How many miles long is the trail?

asked by dave on December 13, 2016
85. ## math

At 10:00 AM, a car leaves a house at a rate of 60 mi/h.At the same time, another car leaves the smae house at a rate of 50 mi/h in the opposite direction. At what time will the cars be 330 miles apart? I tried to make a equation, 50h+60h=330. I divided 330

asked by robert on October 23, 2007
86. ## Maths

A ship is sighted from the top of a lighthouse. The angle of depression from the lighthouse to the top of the ship is 45 degrees. The distance from the top of the lighthouse directly to the ship is 4 miles. Calculate the horizontal distance of the ship

asked by Rose on January 7, 2016
87. ## math

At 10:00 AM, a car leaves a house at a rate of 60 mi/h.At the same time, another car leaves the smae house at a rate of 50 mi/h in the opposite direction. At what time will the cars be 330 miles apart? I tried to make a equation, 50h+60h=330. I divided 330

asked by robert on October 23, 2007
88. ## Project Management

Case Study: Calcutta's Metro In 1996, Calcutta’s long-waited metro finally opened to a collective sigh of relief from the long-suffering population of this large Indian city. Critics had long derided the project a one of the “slowest-moving” public

asked by animal on October 5, 2008
89. ## math

A farmer plants corn and wheat on a 180-acre farm. The farmer wants to plant three times as many acres of corn as wheat. Write a system of linear equations that represents this situation. Use xx to represent the number of aces of corn planted and yy to

asked by traci on March 4, 2019
90. ## Chemistry

Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 6.5 g of iron are to be dissolved in 1.4 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?

asked by BillyBob on September 12, 2011

Suppose the marginal revenue (in dollars) from the sale of x jet planes is R'(x)=2x(x^2+50)^2 A. Find the total revenue function if the revenue from 3 planes is \$206,379. B. How many planes must be sold for revenue of at least \$450,000?

asked by David on December 4, 2006
92. ## Physics

Suppose you have a stack of 9 identical oak planks, each of which have a mass of 8.0 kg. You are required to pull the seventh plank from the stack (counting from the top). If the coefficient of friction between oak and oak is 0.6, how hard do you have to

asked by Kristin on October 7, 2015
93. ## physics

If you slosh the water in a bathtub at the correct frequency, the water rises first at one end and then at the other. Suppose you can make a standing wave in a 145 cm long tub with a frequency of 0.31 Hz. What is the velocity of the water wave?

asked by Anonymous on March 8, 2012
94. ## physics

train car are coupled together by being bumped into one another. suppose two loaded train cars are moving toward one another, the first having a mass of 150000 kg and velocity of 0.30 m/sand the second havin a mass of 110000 kg and a velocity of (-0.12

95. ## Chemistry

suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

asked by Kyle on January 31, 2012
96. ## physics

suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

asked by Kyle on January 31, 2012
97. ## Chemistry

Liquid Butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 39.3g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.

asked by Lauren on January 31, 2008
98. ## physical science

Suppose you are camping in the mountains and you need to melt 1.8 kg of snow at 0.0 degC to 70.0 degC. The specific heat of water is 4186 j/kg*C while the latent heat of fusion for water equals 3.34 x 10^5 J/kg. How much heat will be needed? Express in KJ.

asked by Paul on March 18, 2014
99. ## Chemistry

Liquid Butane, C4H10, is stored in cylinders to be used as a fuel. Suppose 39.3g of butane gas is removed from a cylinder. How much heat must be provided to vaporize this much gas? The heat of vaporization of butane is 21.3 kJ/mol.

asked by Lauren on January 31, 2008
100. ## chemistry

Iron reacts with HCl solution to give H2 gas and Fe2+ ions. Suppose that 5.4 g of iron are to be dissolved in 1.1 M HCl. What is the minimum volume (in mL) of the acid solution required to react with all of the iron?

asked by Carolina on September 13, 2011