# How to figure out the temperature of a lake using x for the feet or the Depth and for the degrees Celsius use (3900x+1000)/(3x^2+100) with the answer of the degrees celsius being 8.44 looking like 8.44=(3900x+1000)/(3x^2+100) i need the depth

34,877 questions, page 201
1. ## Calculus

a rifle aimed horizontally and 5 feet above level ground fires a bullet with a muzzle velocity of 3000 ft/sec. How far does the bullet travel from the end of the muzzle before it strikes the ground? (Ignore air resistance)

asked by Jr on February 16, 2011
2. ## Calculus

Air expands adiabatically in accordance with the law PV^1.4=Const. If at a given time the volume is 14 cubic feet and the pressure is 40 pounds per square inch, at what rate is the pressure changing when the volume is decreasing 1 cubic foot per second?

asked by Alexa on May 1, 2016
3. ## geometry

Benji is 55 ft from the base of his apartment building in New York when he spots his friend, Ronny, in the apartment building 150 feet up on the 15th floor. From where he is standing, what is the angle of elevation when he looks up at Ronny? Round to the

asked by Anonymous on December 13, 2012
4. ## geometry

12 foot board is leaning against a wall and makes a 77 degree angle with ground. How high does the board reach on the wall? I used Sin 77x 12 and got 11.692 but questions is round this to the nearest tenth of a foot.... Is it 11.7 feet? Thank you.

asked by sweet pea on February 21, 2016
5. ## English

Combine each pair of sentences. Use verbs Action and being in the new sentence. Write the new sentence 1. Jena jumped four feet high. Jena landed in the foam pit 2. The team ran around the track. The team was soon tired.

asked by Ahmed on April 22, 2019
6. ## Math

A particle is moving at some constant speed. Use the following information to answer the following questions. s(t)=100/t©÷+12; t¡Ã0; see represents feet and t represents seconds a)Find the velocity and acceleration equations for this particle. b)When

asked by Kelsey on March 6, 2008
7. ## Algebra

Ian wants to fence three sides of a rectangular exercise yard for his dog. The fourth side of the exercise yard will be a side of the house. He has 100 feet of fencing available. Find the dimensions that will enclose the maximum area.

8. ## math

A recreation room has the following dimensions.12ft,30ft,8ft,8ft. Carpeting will cost \$1.50 a square foot. How many square feet of carpet will be needed and how much will it cost? Include correct units at each stage within your solution.

asked by kozy on May 11, 2011
9. ## math trigonometry

My question is kinda hard i don't know how to start the problem to get my answer. the question is: You are cleaning the gutters on your house. the gutters are @ a height of 24 feet. if you have a 50 foot ladder, what is the minimum angle the ladder can

asked by kayla on December 6, 2009
10. ## Algebra

The height h in feet of an object after t seconds is given by the function h=-16t^2+70t+5. How long will it take the object to hit the ground? Round your answer to the nearest thousandth. If that is the function, you need to have a value for the height to

asked by Angela on July 12, 2007
11. ## math

A projectile is launched vertically upward from the top of a 240-foot building. This translates to the model y = -16t^2 + 32t + 240 where y is the height in feet and t is the time in seconds after it was launched, When will the projectile hit the ground?

asked by jennifer on September 25, 2008
12. ## Math

Mary is riding a merry-go-round, whose radius is 25 feet and which is turning 36 degrees per second. Seeing a friend in the crowd, she steps off the the outer edge of the merry-go-round and suddenly finds it necessary to run? At how many miles per hour

asked by Mike on February 19, 2017
13. ## Word problems

Jennifer serves the volleyball to Debra with an upward velocity of 10.5ft/s. The ball is 5 feet above the ground when she strikes it. How long does Debra have to react, before the volleyball hits the ground? Round your answer to two decimal places.

asked by Jim on October 6, 2015
14. ## college algebra

When a ball is thrown up into the air, it makes the shape of a parabola. The equation S= -5t^2 + v*t + k gives the height of the ball at any time, t in seconds, where “v” is the initial velocity (speed) in ft/sec and “k” is the initial height in

asked by renee on March 29, 2010
15. ## math

the official height-to-width ratio of the united states flag is 1 : 1.9. if a united states flag is 9.5 feet wide,how high should it be?

asked by here on May 20, 2009
16. ## algebra

The formula for the area of a trapezoid is A = h(B + b) 2 . The area of the truss is 20 square feet. Find the height of the truss if the shorter base is the same as the height h.

asked by HELP ME on November 11, 2016
17. ## math

the official height to width ratio of the united states flag is 1:1.9. if a united states flag is 9.5 feet wide,how high should it be?

asked by help plz on May 26, 2009
18. ## algebra

Light intensity(lumens) at a depth of x feet has the equation log I/12=-0.0125x what depth will the light intensity be half that of the surface

asked by Steve on November 27, 2012
19. ## AP Calculus

Two sides of a triangle are 15 and 20 feet in length. How fast is the third side increasing if the angle between the given sides is 60 degrees and is increasing at a rate of 2 degrees per second.

asked by Sarah on October 26, 2006
20. ## math

in a grain bin 90' in diameter 130'tall how many bushel of grain at 1.2445 cubic feet per bushel will the bin hold?

asked by Fred on September 17, 2016
21. ## algebra

Marcus has 72 feet of fencing. He wants to build a rectangular pen with the largest possible area. What should the dimensions of the rectangular pen be to maximize the area?

asked by ashley on July 28, 2013
22. ## Math

A carpenter wants to cut an 18-foot board into two pieces so that one piece is 3 feet shorter than twice the shorter piece. Where should he make the cut? ---?--- ft from one end

asked by Amy on June 1, 2012
23. ## math

each square title, to be used to cover a table, has an area of 16in2. how many tiles are required to cover a square table that has the dimensions of 6 by 6 feet?

asked by anita on November 13, 2014
24. ## Math

The perimeter of a triangle is 43 feet.The small side is three was in the middle side, and the largest size to less than twice the middle side. What is the length of the longest side?

asked by Anonymous on February 2, 2017
25. ## math

A fabric manufacturing company has a fabric that is 36 inches wide. If the company needs 75 sq. yards, how many linear feet does the manufacturing team need to produce? NEED HELP!

asked by Jalyn on November 19, 2014
26. ## math

The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

asked by Anonymous on January 31, 2012
27. ## Trig

A 16 - foot ladder leaning against the side of a house reaches 12 feet up the side of the house. What angle does the ladder make with the ground

asked by Bri on September 23, 2012
28. ## Geometry

What is the height of a pole standing 20 feet from the base of pole and measure the angle of the elevation to the top of the pole to be 54 degrees what's the height of the pole

asked by Will on May 22, 2016
29. ## math

Suppose you have enough material for 60 feet of fencing. With this material you want to build the largest rectangular enclosure possible. What are the dimensions of the largest possible enclosure, and what is its area?

asked by Anonymous on November 16, 2010
30. ## Math

A skyscraper is 1150feet above ground level it extends 35 feet below ground level what is the total length of the skyscraper from top to bottom?

asked by Janet on October 5, 2016
31. ## math

Farmer Brown had ducks and cows. One day she noticed that the animals had a total of 12 heads and 32 feet. How many of the animals were ducks and how many were cows?

32. ## math

Jamar is trying to fit his encyclopedia on a shelf. Each book is 2 1/4 inch thick. The shelf is 2 1/4 feet wide. How many books will Jamar be able to fit

asked by Anonymous on February 16, 2015
33. ## math

The distance d in miles that can be seen on the surface of the ocean is given by d = 1.6 h, where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to be to see a distance of 19.5 miles?

asked by leona on December 6, 2011
34. ## Geometry

A circular fountain has a radius of 10 feet if the gardener wants to enclose the fountain with a fence, what is the best approximation for the length of fence the gardener will need to buy?

asked by Elijah on May 23, 2016
35. ## math

A home improvement store sells 2355 feet of wire per day. How many yards of wire does the store sell per day?

asked by Cameron on February 2, 2012

Chris wants to know his BMI. He is five feet, six inches tall and weighs 130 pounds. What is Chris's BMI? Answer choices: 1. 18 2. 21 3. 28 4. 30 **MY ANSWER** Is it: 2. 21?

asked by Elina on January 30, 2014
37. ## math

The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same cross-sectional area as the first story

asked by Anonymous on January 31, 2012
38. ## Living a Healthy Life

In a child care setting, physical hazards include A. plant allergens, microorganisms, and arthropods. B. radiation, temperature extremes, and noise. C. climbing stairs, lifting, and jumping in place. D. carbon monoxide, lead, and radon.

asked by Amanda on January 7, 2015
39. ## Science

Hydrochloric acid and sodium hydroxide are mixed together to form salt and water. During the reaction, the temperature of the solution increases. Which of these best explains why this is considered to be a chemical change? No energy was destroyed. Heat was

asked by Anonymous on August 2, 2011
40. ## Calculus

A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing \$60/ft and on the other three sides by a metal fence costing \$50/ft. If the area of the garden is 102 square feet, find the dimensions of the garden that

asked by Sarah on April 9, 2016
41. ## math

1) A tank holds water with a base 2 ft by 6 ft. If a rectangular solid whose dimensions are 1 foot by 1 foot by 2 feet is totally immersed in water, how many inches with the water rise? A)1/6 B)1 C)2 D)3 E)12 ^I got B 2) AB+BA= CDC IF each of the four

asked by Aline on March 1, 2018
42. ## Math

Ruth is flying a kite. Her hand is 3 feet above ground level and is holding the end of a 375 foot long kite string, which makes an angle of 64° with the horizontal. How high is the kite above the ground? (Round your answer to one decimal place.)

asked by Anonymous on December 13, 2010
43. ## Geometry

PLEASE! Someone help me with geometry!? A wooden board is placed so that it leans against a loading dock to provide a ramp. The board is supported by a metal beam perpendicular to the ramp and placed on a 1 ft. tall support. The bottom of the support is 9

asked by Anna on September 22, 2010
44. ## physics

A 3.00-g bullet (c = 0.0305 cal/g . C° = 128 J / kg . C°) moving at 180 m/s enters a bag of sand and stops. By what amount does the temperature of the bullet change if 80% its KE becomes thermal energy that is transferred to the bullet?

asked by clint on May 29, 2017
45. ## Chemistry

Can someone check these answers for me THANK YOU! 1) Which of the following combinations would most increase the solubility of a gas in a liquid? is it increase the pressure and increase the temperature 2) The concepts of molarity and molality are like in

asked by anonymous on December 15, 2007
46. ## physics

A highway is made of concrete slabs that are 14.0 m long at 20° C. (a) If the temperature range at the location of the highway is from -17.8° C to +40.8° C, what size expansion gap should be left (at 20° C) to prevent buckling of the highway? (b) How

asked by Steve on April 27, 2014
47. ## Heat Transfer

A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24

asked by Ritesh on March 4, 2014
48. ## Heat Transfer

A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C and T¡Ä =40¨¬C. What heat generation rate in the tube will produce a maximum tube temperature of 250¨¬C for k =24

asked by RHS on March 11, 2014
49. ## physics

A .095kg aluminum sphere is dropped rom the roof of a 45m building.If 65% of the thermal energy produced when the sphere hits the ground is absorbed by the sphere, what is its temperature change?

asked by Mark on April 24, 2011
50. ## PHYSICS

Consider a classroom 10.0m long by 6.0m wide by 4.0m high at "room temperature" 20.C and 1.0 atmosphere. A) How many moles of gas are contained in the room? B) Assuming an average molecular weight of 28, what is the mass of the room air?

asked by Physics on May 7, 2015
51. ## astronomy

Mars has an albedo of 15. Given that it doesn't have much of an atmosphere, estimate the mean surface temperature on Mars. Note: the semimajor axis of the orbit of Mars is 1.52 AU. (Please enter your answer in units of degrees Kelvin)

asked by vineeth on July 5, 2017
52. ## AP Chemistry

I need alot of help on this problem, it is due WEDNESDAY and I have no clue how to do it Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of

asked by Eric on January 21, 2008
53. ## Chemistry

Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I

asked by Chris on January 28, 2007
54. ## english

Which of the following statements is an example of personification? a. my brother was always a lone wolf b. the morning dew gleamed liek a field of diamonds c. the flowers bowed their heads in homage d. the bear's feet were as cold as ice C--Flowers are

asked by y912f on May 27, 2009
55. ## Science help (just 4 questions)

1. Which of the following is an example of an environmental pressure? (1 point) the air pressure in the atmosphere a lake that is gradually running out of water a fight between two members of the same species breeding between two members of the same

asked by Miley23 on December 4, 2013
56. ## statistics

-A set of seven scores has a mean of 10. If one of the scores is changed from X=15 to X=1, what will be the new value for the new mean? -A sample of n=8 scores has a mean of M=12. One new score is added to the same and the new mean is found to be M=13.

asked by Joan on January 27, 2008
57. ## physics/ 2D motion

A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

asked by meagan on September 25, 2011

The Texas state dish is chili. Alexi made 6 quarts of chili and served it at a party. He had 1/3 of the chili leftover. How many quarts did he have left? I can't figure this out! Please help, my math worksheet is talking about equivalent fractions!

asked by asia on February 12, 2009
59. ## phy 231

An h1 = 2.10 m tall basketball player wants to make a basket from a distance d = 19.2 m, as seen in the figure. If he shoots the ball at α = 54.4° angle, at what initial speed must he throw the basketball so that it goes through the hoop without striking

asked by Help plz on January 24, 2016
60. ## PHYSICS 1301 (COLLEGE)

As shown in the figure below, two masses m1 = 4.10 kg and m2 which has a mass 50.0% that of m1, are attached to a cord of negligible mass which passes over a frictionless pulley also of negligible mass. If m1 and m2 start from rest, after they have each

asked by Bree on October 18, 2014
61. ## Physics

Consider the skateboarder in the figure below. If she has a mass of 57 kg, an initial velocity of 21 m/s, and a velocity of 10 m/s at the top of the ramp, what is the work done by friction on the skateboarder? Ignore the kinetic energy of the skateboard's

asked by Chrissy on October 17, 2014
62. ## Physics

As shown in the figure below, a skateboarder starts at point A on the ramp and rises to point B, a maximum height of h = 2.89 m above the top of the ramp. If the amount of work done against friction is insignificant, determine his initial speed at point A.

asked by Anonymous on October 24, 2014
63. ## cal

A Norman window has the shape of a rectangle surmounted by a semicircle (see the figure below). If a Norman window is to have a perimeter of 24 ft, what should its dimensions be in order to allow the maximum amount of light through the window? (Round your

asked by Anonymous on May 2, 2011
64. ## Chemistry

Calculate the average translational kinetic energy (kJ/molecule) for a molecule of NH3 at 431 K, assuming it is behaving as an ideal gas. I understand how to figure out the kJ/mole, but I don't understand how to get the kJ/molecule that this question is

asked by Luc on April 11, 2010

A projectile of mass 0.539 kg is shot from a cannon. The end of the cannon’s barrel is at height 6.4 m, as shown in the figure. The initial velocity of the projectile is 9 m/s . How long does it take the projectile to hit the ground? Answer in units of s

asked by meagan on September 21, 2011
66. ## Physics 12

. A rope 2 metres long rests on a table where the coefficient of friction is 0.5. What minimum length of rope can stay on the table before the whole rope will slip off? a) 133 cm b) 80 cm c) 200 cm d) Cannot determine without more information. The answer

asked by Harvey on March 6, 2016
67. ## Algebra 2

For each function, identify the horizontal translation of the parent function, f(x)=x^2. Then graph the function. 19. y=(x-4)^2 I need to figure out how to solve this problem, so steps would be appreciative! PLEASE don't leave websites for me to check out,

asked by Mike on December 6, 2016
68. ## physics

The figure shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 at a constant speed of 60 , and then brakes to come to a stop 40 after leaving the stop sign.

asked by Anonymous on September 10, 2011
69. ## physics

The figure shows the velocity of a solar-powered car as a function of time. The driver accelerates from a stop sign, cruises for 20 at a constant speed of 60 , and then brakes to come to a stop 40 after leaving the stop sign.

asked by Anonymous on September 10, 2011
70. ## calculus

A snowball is melting at the rate of 2 inches per hour. How fast is the surface area of the snowball changing at the instant the snowball has a radius of 3 inches i tried (d/dt) = 4pir^2 (dr/dt) its multiple choice and -72pi isnt there so im just trying to

asked by Thomas on August 28, 2015
71. ## physics

. Two people pull on a stubborn mule, as seen from a helicopter in Figure 2.1. Find (a) the single force that is equivalent to the two forces shown, and (b) the force that a third person would have to exert on the mule to make the net force equal to zero.

asked by Anonymous on September 4, 2011
72. ## physics

Have to figure out 1 before 2 and don't know were to start? 1)The tension in the above string is 84.0 N. Calculate the mass of a 3 m long piece of the steel string. 2)Find the wavelength of the third harmonic of the guitar string described in the problem

asked by Jamie on March 31, 2011
73. ## Police Officer

Can some one please explain tome why Police Officer should not assume? For example when a police Office is told of a dispute between two parties why should they not assume what they are hearing is not the truth. The only reason I could figure out is based

asked by RAY on January 18, 2008
74. ## geometry

I am currently in a section of my geometry book titled Applying Properties of Similar Triangles. This is a very easy section but there is on problem where I cannot figure out (forgot) the next step. 1. z-4 12 --- = --- z/2 10 2.(z-4)10 = (z/2)12 3. 10z+40

asked by Tami on December 8, 2008
75. ## Physics

A horizontal beam of length 4 m and mass 7.0 kg has a mass of 2.0 kg and width 0.8 m sitting at the end of the beam (see the following figure). What is the torque due to gravity (in N · m) on the beam–block system about the support at the wall? (Enter

asked by Haya on April 15, 2017
76. ## physics

A small, m = 2.00 g plastic ball is suspended by a L = 25.0 cm long string in a uniform electric field, as shown in the figure below. If the ball is in equilibrium when the string makes a 14.0° angle with the vertical as indicated, what is the net charge

asked by Mike on October 5, 2010
77. ## Physics

A uniform rod of mass 2.0 kg and length 8.4 m is free to rotate about one end (see the following figure). If the rod is released from rest at an angle of 60° with respect to the horizontal, what is the speed (in m/s) of the tip of the rod as it passes the

asked by Haya on April 15, 2017
78. ## gr8math

We are learning about multiplying integers. 1. A hot air balloon is descending at a rate of 350m/min. How much higher was the balloon five minutes ago?? 2. The sum of 2 integers is -1.Their product is -12. What are the integers?? How would i figure these

asked by rebecca on May 12, 2009
79. ## physics

A solid sphere rolls up an inclined plane of inclination angle 35 degrees. At the bottom of the incline, the center of mass of the sphere has a translational speed of 13 ft/s. How far (in feet) does the sphere roll up the plane (distance along the plane)?

asked by Science on May 6, 2013
80. ## math

1. The table shows the number of wild strawberry plants in a particular forest t years after a forest fire. Use a graphing calculator to find the exponential function that best fits the set of data. Number of Wild Strawberry Plants years | wild strawberry

asked by Mary on April 12, 2007
81. ## English - help

Which figure of speech os exemplified by lines 149-151 of the excerpt from The Odyssey, Part III? The slid his right hand down the cord and plucked it, / so the taut gut vibrating hummed and sang a swallow's note. A. Simile B. Metaphor C. Personification *

asked by Cassie on January 16, 2014
82. ## Algebra

The perimeter of the larger table is 44 feet. what is the perimeter of the smaller table ?

asked by Maria on October 11, 2017

if a perimeter of a garden is 82 feet. the length is 5 more than twice the width.what is th width of the garden?

asked by Sylvia on August 30, 2010
84. ## math

The cubic feet of a cylinder that's 12 3/4 inches wide and 16 inches wide?

asked by Anonymous on January 27, 2016
85. ## math

the length of a rectangle is 6 ffet more than twice the width. if the length is 24 feet, what is the width

asked by antonio on April 11, 2011
86. ## Math

They have 20 pieces of 12 foot lumber. If they need 2 screws for every 3 feet of lumber, how many screws do they need?

asked by Me on March 20, 2012
87. ## math

a rope has a lenght of 150 feet what is the lenght in yards of the rope

asked by Anonymous on January 17, 2014
88. ## Math

a snake can grow up to 21 feet. This is 35% of its maximum length. What is the maximum length?

asked by Clark on February 25, 2014
89. ## math

i got 12 feet long board and i cut 42 inches how long is the board now

asked by sein on October 25, 2016
90. ## math

a car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?

asked by ty on November 28, 2010
91. ## Math

There are some rabbits and chickens in a farm. Together they have 35 heads and 94 feet. How many rabbits? How many chickens?

asked by Prolly on July 31, 2014

You set up 5 samples that contained a range of sucrase concentrations but the same amount of substrate (sucrose). - The pH was kept constant in all tubes buy using the same amount of buffer. - The temperature was kept constant in all tubes (room temp) - A

asked by Mellisa B on September 6, 2016
93. ## Chemistry

Which of the following does form a Group II cation? lead iron cobalt nickel How do you figure this one out? You must know what is in group II. Fe, Co, and Ni are in group III. Pb is in both group I and group II. Pb ppts as the chloride in group I and as

asked by Chemistry on February 20, 2007

TO BUILD A FIRE Jack London Day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main Yukon trail and climbed the high earthbank, where a dim and little-traveled trail led eastward through the fat spruce timberland.

asked by Ariel on June 7, 2010
95. ## college physics

A fisherman poles a boat as he searches for his next catch. He pushes parallel to the length of the light pole, exerting a force of 245 on the bottom of a shallow lake. The pole lies in the vertical plane containing the boat's keel. At one moment, the pole

asked by molly on March 2, 2015
96. ## Algebra proof

Prove that if w,z are complex numbers such that |w|=|z|=1 and wz\=-1, then w+z/1+wz is a real number I so far i have determined that w and z both have to equal less than one, but i cannot figure out how to prove this. if wz does not equal one it must mean

asked by Gem on March 31, 2015
97. ## Algebra HELP!

Solve the equation identify as an identity, an inconsistent equation or a conditional. My equation is 1-3/2x+7/4 I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

asked by Tim on March 23, 2008
98. ## Algebra

Solve the equation identify as an identity, an inconsistent equation or a conditional. My equation is 1-3/2x+7/4 I know the answer is Conditional {-2}, but I cannot figure out how to get it or even where to start.

asked by Tim on March 22, 2008
99. ## geometry

A pentagon is a geometric figure with 5 sides. The lengths of the sides of a given pentagon are (6x + 2) cm, (3x + 2) cm, (2x) cm,(3x + 4) cm, and (8x – 4) cm. Which equation below describes the perimeter, P, of the pentagon in terms of x?

asked by Anonymous on April 6, 2011
100. ## math

How do I figure out what the nth term is in a sequence? Exmaple: 1, 3, 5,7, What would be the 100th term? IF adding 2 to each would the formula be n+2? How to calculate 100th term?

asked by Lauren on May 9, 2010