# 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 54
1. ## calculus

A student throws a rubber ball upward from a height of 12 feet,initially at 8 feet per second. a.Write the position function that models the height of the ball t seconds after it was thrown. b.What is the maximum height of the ball?

asked by me on March 2, 2019
2. ## science

If a 250.0 mL sealed plastic bag starts out at a temperature of 19.0 °C and after sitting in the sun reaches a temperature of 60.0 °C, what will the new volume of the bag be? Assume the pressure inside the bag remains constant.

asked by Anonymous on September 1, 2013
3. ## physics

Concrete highway slabs are poured in lengths of 9.00m . Part A How wide should the expansion gaps between the slabs be at a temperature of 22∘C to ensure that there will be no contact between adjacent slabs over a temperature range of -25 ∘C to 48∘C?

asked by Help! final next weel on December 3, 2013
4. ## physics

A copper calorimeter can with mass .100 kg contains .160 kg of water and .018 kg of ice in thermal equilibrium at atmospheric pressure. If .750 kg of lead at a temperature of 255 degrees Celsius is dropped into the can what is the final temperature of the

asked by Jen on November 15, 2007
5. ## physics

I am having a really hard time figuring this question out, would somebody be able to help me? Imagine a giant dry-cleaner's bag full of air at a temperature of -35∘C floating like a balloon with a string hanging from it 12km above the ground. Estimate

asked by Caroline on August 5, 2013
6. ## Physics

A copper calorimeter can with mass .100 kg contains .160 kg of water and .018 kg of ice in thermal equilibrium at atmospheric pressure. If .750 kg of lead at a temperature of 255 degrees Celsius is dropped into the can what is the final temperature of the

asked by Katherine on October 18, 2010
7. ## Chemistry

Why does CdCO3 have a significantly lower decomposition temperature than CaCO3, despite the similarity in the ionic radii of Ca2+ and Cd2+? I think they both decompose to give the metal oxide and carbon dioxide. Could the polarising ability of Ca compared

asked by Alice on April 23, 2009
8. ## Physics

A piece of glass has a temperature of 83.0 °C. Liquid that has a temperature of 43.0 °C is poured over the glass, completely covering it, and the temperature at equilibrium is 59.0 °C. The mass of the glass and the liquid is the same. Ignoring the

asked by P H Y S I C S on April 18, 2015
9. ## math

To convert a temperature from Fahrenheit to Celsius, you can use the formula C =5(F −32),whereC is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit. How would I use formula to work out the Celsius equivalent of −10◦F.

asked by Sam on January 22, 2010
10. ## Physic II

In the figure Q=4.6 nC and all other quantities are exact. What is the magnitude of the force on the charge Q? The figure is a triangle with equal sides of 1cm and 60 degree angles. Two of the corners on the bottom of the triangle has a charge of +2nC and

asked by Can on January 26, 2014
11. ## MATH - HELP ME PLEASE!!!!

The Johnstown Inclined Plane in Pennsylvania is one of the longest and steepest hoists in the world. The railway cars travel a distance of 896.5 feet at an angle of approximately 35.4°, rising to a height of 1693.5 feet above sea level. (Round your

asked by Anonymous on February 12, 2019
12. ## Math

a rope swing is attached to tree overlooking the river. if the rope is 38 feet in length and swings through an angle of 200 degree, find the total distance to the nearest feet, traveled by someone sitting on the seat when the swing angle described is the

asked by Ananya on February 23, 2014
13. ## ALGEBRA

the atmosphere pressure P in pounds per square inch (psi) is given by P=14.7e upper o.21a where a is the attitude above sea level in miles. If a city has an atmosphere pressure y 13.29 psi what is its altitude. Recall that one mile = 5,280 feet. Round to

asked by gary on May 11, 2014
14. ## Math

Every year in Delaware there is a contest where people create cannons and catapults designed to launch pumpkins as far in the air as possible. the equation y=15+110x-16x^2 can be used to represent the height, y, of a launched pumpkin, where x is the time

asked by Veronica on January 21, 2015
15. ## math

Emma's school plans to build a rectangular basketball court with an area of 150+175t square feet. The length of the basketball court is 25 feet.What is the width of the basketball court? Thank you!

asked by Kyle on March 3, 2015
16. ## Haley

Three circles with radii 35cm, 50cm, and 65cm respectively are tangent to each other externally. Find the angles of the triangle formed by joining the centers of the circles. My teacher said to use the cosine law cause you know 3 sides but no angles. But I

asked by Math on August 27, 2014
17. ## Physics-I would like to ask once more!

A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. (Figure

asked by Marco Tsang on December 4, 2010
18. ## Calc 2

The figure shows a semicircle with radius 1, horizontal diameter PQ, and tangent lines at P and Q. At what height above the diameter should the horizontal line be placed so as to minimize the shaded area? I would post the figure but the website is not

asked by gabby on March 28, 2016
19. ## math

A LAMP POST IS 10 FEET TALL AND CAST A SHADOW. THE DISTANCE FROM THE TOP OF THE LAMP POST TO THE TIP OF THE SHADOW IS 20 FEET. FIND THE ANGLE OF THE ELEVATION.

asked by BRANDI on August 12, 2014
20. ## Math Fraction

Bernadette cuts a piece of fabric into 4 peices of the same length. After she cut off 3 feet from one of the pieces, she is left with a piece that is 2 feet long. What is the length of the fabric she started with?

asked by Hikaru on July 1, 2016
21. ## Algebra

An object is dropped from a bridge. Find the distance the object has fallen when its speed reaches 132 ft/s. Use the equation v = 64d , where v is the speed in feet per second and d is the distance in feet.

asked by Irma on July 6, 2016
22. ## math

The area of a rectangular plot 24 feet long and 16 feet wide will be doubled by adding an equal distance to each side of the plot. What is the distance added to each side?

asked by freddy on April 22, 2010
23. ## geometry

william wishes to carpet his rectangular5 patio, whose dimensions are 21 feet by 18 feet. How much will it cost William to cover his patio if the carpet costs \$4.95 per square yard?

asked by rob on May 3, 2012
24. ## math

Mr.savage used 3 gallons of paint to cover 1350 of square feet of wall .at this rate how much paint wiil be needed to cover 1800 square feet.

asked by sharya on January 3, 2017
25. ## math

A hallway measuring 90 feet x 7 feet requires 1/2 a fluid ounce of cleaning solution per square foot. How much cleaning solution is required to clean the hallway

asked by Anonymous on June 11, 2014
26. ## physics

The hang-time of a basketball player who jumps a vertical distance of 2 feet (0.61 m) is about 0.70 second. What will be the hang-time if the player reaches the same height while jumping 3 feet (0.91 m) horizontally?

asked by jen on October 13, 2011
27. ## cocoa

Julian's shadow is 6 feet long. At the same time a 31 foot tall building casts a shadow that is 28 feet long. What proportion could be used to find Julian's height?

asked by Anonymous on May 14, 2012

You use a scale of 1inch = 280 feet to build a model of the Great Pyramid of Giza. The width of the base of the pyramid is 756 feet. What is the width of your model? a. 27 in. b. 3.4 in. c. 3 in. d. 2.7 in.

asked by Josh on January 16, 2018
29. ## College Math II

Write a complete solution to each problem. If the length of a rectangle is 3 feet longer than the width and the diagonal I s 15 feet, then what are the length and width? I do not understand how to solve this problem. Can someone help me? Thanks.

asked by Lori on November 21, 2009
30. ## Geometry

1.11 - Mr. Littles is building a triangular sandbox using three boards. He already has 2 boards that measure 9 feet and 12 feet. Select all of the values that could represent the length of the third board of his triangular sandbox.

asked by Anonymous on November 5, 2017
31. ## Calculus

The vertical position of an object is modeled by the function h(t)=-16t^2 +5t+7, where h is measured in feet and t is measured in seconds. Find the object's initial velocity (that is, the velocity at t=0). Is it 5 feet per second?

asked by Kayla on March 26, 2014
32. ## Math

some kangaroos can cover 30 feet in a single jump. if a kangaroo could jump like that 150 times in a row, how farther would it need to go to cover a mile? (1 mile=5280 feet)

asked by Malik on October 15, 2012
33. ## calculus

gas is pumped into a spherical balloon at the rate of 1 cubic feet per minute. How fast is the diameter of the balloon increasing when the balloo0n contains 36 cubic feet of gas?

asked by Joshie on October 6, 2010
34. ## Algebra

a ladder is leaned against a building. the bottom of the ladder is 9 feet from the building the top of the ladder is 16 feet above the ground. draw a diagram to represent the situation. what is the slope of the ladder?

asked by Loren on November 11, 2010
35. ## 7th grade math pygorean theroem ms.sue correct

4. A wire is stretched from the top of a 26-foot pole to a point on the ground that is 15 feet from the bottom of the pole. Approximately how long is the wire in feet? (1 point) 16 21 30 37 4.30 is it correct?

asked by Delilah on October 9, 2012
36. ## Math

The floor of a delivery van has an area of 56 square feet and is 8 feet long. How many rows of 8 boxes that measure 1 foot by 1 foot can be put in the delivery van?

asked by Ashley on April 13, 2016
37. ## Math

You use a scale of 1 inch = 280 feet to build a model of the Great Pyramid of Giza. The width of the base of the pyramid is 756 feet. What is the width of your model? 1. 27 in. 2. 3.4 in. 3. 3 in. 4. (2.7 in.)

asked by Help I need somebody not just anybody on January 31, 2017
38. ## Math

Need help on this one.... Your town is building a circular ice rink with a diameter of 100 feet. Around the ice rink will be a walkway that is 10 feet wide. What is the approximate area of the walkway? Thanks...

asked by Brandi on December 10, 2013
39. ## math

Your town is building a circular ice rink with a diameter of 100 feet. Around the ice rink will be a walkway that is 10 feet wide. What is the approximate area of the walkway?

asked by jordy on November 7, 2018
40. ## Geometry

Two of the sides of a triangular lot have lengths of 90 feet and 80 feet. If the angle opposite the 80-foot side is 59°, what is the length of the third side of the lot to the nearest tenth of a foot?

asked by Dolores on January 26, 2011
41. ## math

A picture is 5 feet high and the eye level of an observer is 2 feet below the bottom edge of the picture. How far from the picture should the observer stand if he wants to maximize the angle subtended by the picture? help me :((

asked by kirito on October 18, 2015
42. ## math

some kangaroos can cover 30 feet in a singke jump! if a kangaroo could jump like that 150 times in a row, how much farther would it need to go to cover a mile? (1 mile = 5,280 feet)

asked by sharon on September 19, 2012
43. ## math

Carlos will use square floor tile that measure one foot on each side to cover a hallway that is eight feet long and four feet wide.how many floor tile will carlos need

asked by kayla on February 4, 2013
44. ## geometry

On one sunny afternoon, the movie theater casts a shadow of 30 feet. At the same time of day, A tree is casting a shadow of 10 feet. What is the height of the movie theater?

asked by johnny boy on February 9, 2012
45. ## Math

A walkway is formed by four semi circles. The diameter of the inner semi circles is 14 feet. The width between the outer and inner semicircles is 2 feet. Find the area of the walkway. Use 3.14 as an approximation for pi.

asked by Eiyannah on June 9, 2015
46. ## math

Q. The rectangular-shaped doctor's office has an area of 120 square feet and a perimeter of 44 feet. What are the dimensions of this office space? - A. Do I add just add 120 by 44??

asked by amethyst on April 13, 2015
47. ## math

a 6 foot red casts a shadow that is 7 feet long. the shadow of a nearby tree is 42 feet long. slove a proportion to find the height of the tree

asked by andy on January 18, 2017
48. ## math

Joey's playhouse has a perimeter of 28 feet. What could be the dimensions of the playhouse? Draw a model and label the length and width. Show that the dimensions equal a perimeter of 28 feet.

asked by Gabrielle on April 7, 2015
49. ## Math 142 (Pre-Cal) (Circles)

A wheel spins through 29 revolutions per minute. Find the angular velocity and the linear velocity if the radius of the wheel is 1.8 feet. w=? (rad/min) v=? (feet/min)

asked by Ray on March 31, 2016
50. ## Algebra

Use the formula h= -16t^2+250t to model the height 'h' in feet of a model rocket 't' seconds after it has luanched. Determine when the rocket will reach a height of 900 feet.

asked by Tanya on April 15, 2008
51. ## Chemistry

When 0.59 mol I2(g) and 0.59 mol H2(g) are placed into a 1.0-L container at a given temperature, 0.30 mol H2(g) is found to be present after the reaction below reaches equilibrium. Calculate Kc at the given temperature. I2(g) + H2(g) 2HI(g)

asked by Shayne on November 19, 2010
52. ## chemistry

A samples with a mass of 35 grams and a temperature of 97.3 degree c is placed into 75.0 g of water at 19.7 degree c. The final temperature is 22.3 degree c, what is the specific heat of the sample?

asked by Linda on January 25, 2011
53. ## math

1: Connor drives an an eighteen-wheeler. It cost Conner \$456 to fill the truck up with diesel fuel. If diesel fuel cost \$3 a gallon, how many gallons of fuel were bought? a: 148 b: 152 c:156 d:164 2: The temperature started at 35°F. If the temperature

asked by monokumaa11037 on May 11, 2019
54. ## Science

1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C? 2. A 300 g piece of aluminum is heated from 30 degrees C to 150 degrees C. What amount of heat energy is absorbed? 3. Determine the temperature change in each

asked by Debra on October 23, 2011
55. ## Algebra

Scott set up a volleyball net in his backyard. one of the poles, which forms a right angle with the ground, is 6 feet high. To secure the pole, he attached a rope from the top of the pole to a stake 8 feet from the bottom of the pole. To the nearest tenth

asked by Ricky on June 11, 2014
56. ## Algebra

The length of a rectangular lot is 50 feet more than the width. If the perimeter is 500 feet, then what are the length and width?

asked by Don on July 14, 2008
57. ## math

If tree is broken 18 feet from its base. The top lands 24 feet from the base. How tall is the tree?

asked by marcus on April 22, 2014
58. ## math

The bottom of the ladder is 5 feet tall from the wall. the ladder is 13 feet long. about how high is the wall?

asked by jenny on September 13, 2012
59. ## Math

The perimeter of rectangular garden is 40 feet. The width is 2 feet more than half the length. What is the length and width

asked by Coco on April 16, 2014
60. ## algebra

the width of my garden is 10 feet shorter than twice the length. the perimeter is 70 feet. find the length and the width

asked by Amanda on September 3, 2015
61. ## English

1. Dig a hold 2 feet deep. 2. Dig a hole for 2 feet deep. (Are both OK? Is 'for' omitted in Sentence 1?)

asked by rfvv on July 8, 2013
62. ## math

The height h in feet of a baseball after t seconds is given by h = -16t2 + 88t + 3. At what values of t is the height of the baseball 75 feet?

asked by Anonymous on May 9, 2011
63. ## geometry

A fkagpole 24 feet high is 10 feet away from the base of its anchor cable, how long is the anchor cable?

asked by yvteet on October 30, 2011
64. ## Algebra

The floor of a shed has an area of 54 sq.feet. Find the length and width if the length is 3 feet less than twice its width.

asked by Lora on March 28, 2013
65. ## algebra

A 49 foot pipe is cut into two pieces. If one piece has a length of y feet, what is the length, in feet, of the other piece?

asked by danielle on August 18, 2011
66. ## math

If the base to a gutter and 12 feet from the base of a house, how many feet high on the house does the ladder reachIf th

asked by mark on February 24, 2011
67. ## math

girl 5 feet case a shadow of 61/2 ft at the same time a statue shadow 12 feet how tall is the statue

asked by Anonymous on February 18, 2013
68. ## geometry

The length of a rectangular garden is two feet less than five times the width. If the perimeter is 72 feet, what is the length of the garden?

asked by Anonymous on March 28, 2011
69. ## algebra

a man 6.2 feet tall stands 12 feet away from a streetlight and casts a 5 ft shadow. How tall is the streetlight?

asked by sushmitha on December 3, 2011
70. ## geometry

Two triangles are similar: the first has a base of 12 feet and a height of 16 feet; the second has a base of 9feet. What is the height of the second triangle?

asked by Shay on October 11, 2010
71. ## chemistry

if you burned a marshmallow with a net mass of 0.8g and you heated 49.1 g of water from an initial temperature of 24C to a final temperature of 28C what is the heat energy per gram of marshmallow? (express your answer in J/g) a. 822 J/g b. 1027 J/g c.

asked by shannon on May 10, 2010
72. ## Physical Chemistry3

The specific volume of water is given quite accurately by the empirical relation ln(v) = −6.7081 + 1.01257 ln(T) + 280.663/T Use this relation to derive an equation for the coefficient of thermal expansion and determine the temperature at which this

asked by Amber on September 29, 2008
73. ## Physical Chemistry3

The specific volume of water is given quite accurately by the empirical relation ln(v) = −6.7081 + 1.01257 ln(T) + 280.663/T Use this relation to derive an equation for the coefficient of thermal expansion and determine the temperature at which this

asked by Amber on September 29, 2008
74. ## Chemistry

You have a 22L cylinder of helium at a pressure of 150atm and a temperature of 31C. How many ballons can you fill, each with a volume of 5.0L, on a day when the atmospheric pressure is 755mmHg and the temperature is 22C? I know I use PV=nRT, but what

asked by Eric on September 27, 2009
75. ## help on a question

I needed help on a physical science question. When the molecules in a body move with increased speed, it's possible that the body will change from a... A) gas to a liquid B) gas to a solid C) liquid to a solid D) liquid to a gas PLEASE HELP ME!! If the

asked by kelly jo on July 31, 2005
76. ## Chemistry

H2O (l) requires the largest amount of energy to raise the temperature of 25.0g H2O of the substance from 15.0 *C to 37.0 *C. Calculate the energy. Hg (l) has the largest temperature change when 550 g of the substance absorbs 10.7kJ of energy. Calculate

asked by Jack on October 3, 2010
77. ## precal

The temperature of a chemical reaction oscillates between a low of 40 degrees C and a high of 100 degrees C. The temperature is at its lowest point when t = 0 and completes one cycle over a five-hour period. (a) Sketch below the temperature, T, against the

asked by Anonymous on February 14, 2014
78. ## Chemistry

1) Determine the amount of heat in kJ given off when 1.26 x 10^4 g of NO2 are produced according to the equation: 2NO (g) + O2 (g) --> 2NO2 (g) and delta (H) = 483.6 kJ/mol 2) A sheet of gold weighing 10 g and at a temperature of 18 degrees C is placed on

asked by Tim on November 18, 2014
79. ## chemistry

What is the new volume if the volume of a gas is 3.2 L when the temperature is 7 C if the temperature is increased to 15 C without changing the pressure

asked by theo on April 8, 2011
80. ## algebra

If the temperature was 73 degrees outside at 5:00 p.m., but it fell 19 degrees by 10:00 p.m., what is the temperature at 10:00 p.m.? Write equation and solve.

asked by kimberly on August 29, 2015
81. ## math

The temperature at 8:00pm is 32 degrees. If it dropped 3 degrees per minute, what is the temperature at 8:30pm

asked by kathy on April 18, 2012
82. ## Physics

0 degree centigrade temperature cause 300m/s2 how many centigrade temperature cause 400 m/s2 velocity

asked by Ghost on November 20, 2016
83. ## Physics

Knowing the temperature at the surface of the Earth to be 72 F, find the temperature at the surface of Venus.

asked by Sue on December 10, 2014
84. ## Math

If the temperature is a minus eight degrees and rises four degrees every hour for four hours, what will the temperature be??

asked by Lisa on February 23, 2016
85. ## APPLIED CHEMISTRY

MOLE FRACTION AND MOLALITY IS INDEPENDENT OF TEMPERATURE BUT NORMALITY AND MOLALITY CHANGES WITH TEMPERATURE, WHY?

asked by ABDULLAH on December 27, 2012
86. ## physics 102

An aluminum wing on a plane is 30.6 m long when the temperature is 20 oC. At what temperature would the wing be 0.06 m shorter

asked by pocholo on April 27, 2013
87. ## Algebra 1

Fnd the temperature in degrees Celcius(C) given a temperature of 77 degrees Fahrenheit(F) using the formula C=5/9(F-32).

asked by Shavaleir on September 21, 2009
88. ## math

A wedding cake must be kept in a refrigerator at a temperature of at least 41*F but no more than 52*F. Write an inequality for the temperature, w, at which the cake can be kept.

asked by tr on October 18, 2016
89. ## chemistry

A tank has a pressure of 20.3 atm at a temperature of 22.6 oC. After heating, the temperature rises to 52.7 oC. What is the new pressure?

asked by Mely on September 5, 2010

When the temperature of a gas in a vessel is increased by 1C then the pressure is increased by 0.5%. what will be its initial temperature?

asked by Tulika on April 9, 2012
91. ## Math

The outside temperature is -5 degrees and falling at a rate of 3 degrees per hour. What will the outside temperature be in 7 hours

asked by Demarion mack on December 1, 2016
92. ## math

One day, the temperature outside increased by 6/10 every hour for seven hours. How much did the temperature increase that day?

asked by andrew on March 24, 2014
93. ## Physics

On a beautiful baseball day with air temperature of 200 C, a pitcher throws a 0.142 kg baseball at 51 m/s towards home plate. As it travels 19.4 m, the ball slows down to a speed of 36 m/s because of air resistance. Calculate the change in the temperature

asked by Anonymous on June 16, 2016
94. ## Physics

On a beautiful baseball day with air temperature of 200 C, a pitcher throws a 0.142 kg baseball at 49 m/s towards home plate. As it travels 19.4 m, the ball slows down to a speed of 36 m/s because of air resistance. Calculate the change in the temperature

asked by Anonymous on June 16, 2016
95. ## algebra

At a crime scene, police officers find a murder victim in a tub full of warm water. A thermometer shows that the water temperature is 75 degrees F and the air temperature is 70 degrees F. It is known that most people fill a tub with water at 100 degrees F.

asked by Andrea on December 12, 2012
96. ## Algebra 2

Abey Numkena is an interior designer. She has been asked to locate an oriental rug for a new corporate office. As a rule, the rug should cover 1/2 of the total floor area with a uniform width surrounding the rug. a. if the dimensions of the room are 12

asked by Ashley V on November 6, 2007
97. ## Science

Determine the final temperature when 100 g of water absorbs 1000 J of thermal energy, given that the initial temperature of the water is 20.0°C. The theoretical specific heat capacity of water is 4.19 J/g·°C. Show your work below.

asked by Desirae on May 22, 2015
98. ## chemistry

An 85.0-N backpack is hung from the middle of an aluminum wire, as the drawing shows. The temperature of the wire then drops by 20.0 C¡ã. Find the tension in the wire at the lower temperature. Assume that the distance between the supports does not

asked by zuta on April 18, 2010
99. ## world history

what is the distance the Chinese explorers taveleed to reach the eastern coast of Africa. And how does it compare to Prine Henry's? You can work that out from this site. www.worldatlas.com/ Figure the distance from China to Africa, then figure the distance

asked by danielle on December 2, 2006
100. ## Physics

The figure(Figure 1) shows a solid metal sphere at the center of a hollow metal sphere. Assume that E=1.2×104N/C. What is the total charge on the exterior of the inner sphere?

asked by Allison on March 11, 2014