# 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 181
1. ## calculus 2

Megan bailed out of her plane at an altitude of 8000 feet, fell freely for 15 seconds, and then opened her parachute. Assume that the drag coefficients are a=0.1 for a free fall and a=1.6 with a parachute. When did she land(in seconds)?

asked by Nycw on February 1, 2013
2. ## calculus 2

Megan bailed out of her plane at an altitude of 8000 feet, fell freely for 15 seconds, and then opened her parachute. Assume that the drag coefficients are a=0.1 for a fee fall and a=1.6 with a parachute. When did she land(in seconds)?

asked by Nycw on February 1, 2013
3. ## calc

The sun is shining and a spherical snowball of volume 210 ft3 is melting at a rate of 14 cubic feet per hour. As it melts, it remains spherical. At what rate is the radius changing after 3 hours?

asked by Bubba on February 14, 2011
4. ## Algebra

If you descend 1800 ft in elevation by the time you are 3.25 mi horizontally away from the top of a mountain, what would be the slope to the nearest hundreth. Slope= change in altitude/horizontal distance. change the miles unit to feet.

asked by Tony on March 7, 2007

The Vietnam Veterans Memorial in Washington, D.C., is made up of two walls, each 246.75 feet long, that meet at an angle of 125.2°. Find, to the nearest foot, the distance between the ends of the walls that do not meet.

asked by Rony on April 10, 2010
6. ## calculus

a particle starts from rest and moves along a straight line with an acceleration equal to 24-15√t where distance and time are measured in terms of feet and seconds respectively. with what acceleration will the particle return to the starting point?

asked by jean on August 6, 2015
7. ## calculus

Construct a window in the shape of a semi-circle over a rectangle.If the distance around the outside of the window is 12 feet.What dimensions will result in the rectangle having the largest possible area? We need to find Amax I know the circmfrence is 12

asked by fareha on December 13, 2011
8. ## 7th grade math help 2 question

#11 The coordinate of rectangle ABCD are given. Find the coordinates of its image after a dilation with the scale factor of 2. * A (2,4) B (-3, -1) C (0,9) D (6,-4) #10 On a blueprint, 1 inch = 13 feet. If the dimensions of the playroom on the blueprint

asked by Delilah on November 5, 2012
9. ## law of sines and cosine

a house is built on a triangle plot of land. two sides of the plot are 160 feet long and they meet at an angle of 85 degrees. if a fence is to be built around the property, how much fencing material is needed

asked by s on April 28, 2011
10. ## algebra 1

3. A ball is thrown into the air with an initial upward velocity of 46ft/s. Its height (h) in feet after t seconds is given by the function h = -16t^2 + 46t + 6. After how many seconds will the ball hit the ground? A. 3 B. 4 C. 5 D. 6 I think D, if i'm

asked by Ralf miles on March 22, 2017
11. ## Word Problem

A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 212 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?

asked by Jessica on October 24, 2011
12. ## Math

Show all work You have 92 feet of fencing to enclose a rectangular plot that borders on a river. If you do not fence the side alongthe river, find the length and width of the plot that will maximize the area.

asked by Liz on October 25, 2011
13. ## calculus

a particle starts from rest and moves along a straight line with an acceleration equal to 24-15√t where distance and time are measured in terms of feet and seconds respectively. with what acceleration will the particle return to the starting point? help

asked by jean on August 10, 2015
14. ## Math- algebra

If a ball is thrown directly upward with a velocity of 26 ft/s, its height (in feet) after t seconds is given by y = 26t − 16t^2. What is the maximum height attained by the ball? -Please just post answer if possible, my calculations are off. Just want to

asked by Jennifer on December 17, 2014
15. ## PRE-CALCULUS

AN OPEN BOX IS FORMED BY CUTTING SQUARES OUT OF A PIECE OF CARDBOARD THAT IS 16 FT BY 19 FT AND FOLDING UP THE FLAPS. WHAT SIZE CORNER SQUARES SHOULD BE CUT TO YEILD A BOX THAT HAS A VOLUME OF 175 CUBIC FEET

asked by ASHLEY on September 6, 2009
16. ## math

How much work does a 120 pound boy do in climbing to the top of the Washington Monument - a climb of 550 feet? If the climb in problem 2 takes 20 minutes, what is the average horsepower produced by the boy?

asked by walt on March 30, 2008
17. ## Calculus

A radar gun was used to record the speed of a car (in feet per minute) during selected times in the first 2 minutes of a race. Use a trapezoidal sum with 4 intervals to estimate the distance the car covered during those 2 minutes. t: 0 0.3 1.0 1.6 2 v(t):

asked by Deondre on July 6, 2018
18. ## Math

A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 344 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?

asked by Tony on July 5, 2012
19. ## math

a vehicle uses 1 tablespoon of gasoline to drive 125 yard how many miles can the vehicle travel per gallon? a model airplane flies 18 feet in 2 seconds what is the planes speed per miles an hour? how do i do these

asked by courtney on October 21, 2010
20. ## Calculus

A trough is 12 ft long and has ends that are isosceles triangles that are 1 ft high and 1.5 ft wide. If the trough is being filled at a rate of 11 cubic feet per minute, how fast is the height of the water increasing when the height is 7 inches?

asked by Anonymous on October 19, 2011
21. ## geometry

An oval indoor running track with semicircular ends has the dimensions of 80' long, 34' wide, and the individual lane width is 5' wide. If the track is to be resurfaced how many square feet of material will be required? Help Please!

asked by Shelly on March 6, 2012
22. ## Calculus 2

A farmer wishes to build a fence for 6 adjacent rectangular pens. If there is 600 feet of fencing available, what are the dimensions of each pen that maximizes total pen area? I keep getting x=150 but I have been told that is not enough fencing. Can anyone

asked by Henry on April 10, 2013
23. ## computer programming

. Design an application that displays the number of square feet in a house. Declare and initialize the length and width of the house to 37 and 22, respectively. Go into your source code and change the initialization values. Rerun the application

asked by james love on September 12, 2013
24. ## calculus

a particle starts from rest and moves along a straight line with an acceleration equal to 24-15√t where distance and time are measured in terms of feet and seconds respectively. with what acceleration will the particle return to the starting point?

asked by justin on September 4, 2015
25. ## science

How can volcanic eruptions change the surface of the earth? A. by lowering land levels several feet B. by creating new islands and land C. by creating large deposits of coal D. by decreasing the level of the ocean i think its B

asked by sky on April 10, 2018
26. ## Math

If a ball is thrown straight up into the air with an initial velocity of 95 ft/s, it height in feet after t second is given by y=95t–16t2. Find the average velocity for the time period beginning when t=2 and lasting i) 0.1 seconds ii) 0.01 seconds

asked by Jennifer on October 15, 2010
27. ## Chemistry

Help needed with a calorimeter lab. I have to measure the enthalpy of a neutralization reaction between NaOH and HCl as well as find the concentration of NaOH the following ways. - using the mass and volume of NaOH - Using calorimetric data assuming no

asked by Bibi on November 17, 2014
28. ## Physics please check repost

The pressure and volume of a gas are changed along a path ABCA in the figure. The vertical divisions on the graph represent 4.0 x 10^5 Pa, and the horizontal divisions represent 4.5 x 10^-3 m3. The diagram is a upright rectangle divided into small squares

asked by Mary on April 23, 2007
29. ## World History

2. the conflict that was fought between supporters of the King and supporters of Parliament was called the a. Thirty Years' War b. War of the Roses c. Parliamentary Revolution d. English Civil War D? 6. One of the ways the Manchus tried to distinguish

asked by mysterychicken on January 23, 2012
30. ## Chemistry

Three factors control the rate of evaporation of a liquid: surface area, temperature, and strengths of intermolecular forces. More than one of the statements given described a correct effect. The statements are (1) the larger the surface area, the faster

asked by Anna King on January 31, 2012
31. ## chemistry

A sample of unknown metal has a mass of 36.7 g. This metal was placed in boiling water at 96.0oC until the metal had reached the temperature of the water. The metal was then placed in a foam cup with 50.0 g of water in it at 20.0oC. The cup absorbs 42.0

asked by korko on September 28, 2014
32. ## Chemistry

1.) A closed 5.00 L container is filled with a mixture of 4.00 moles of hydrogen gas, 8.00 moles of oxygen, 12.0 moles of helium, and 6.00 moles of nitrogen. What is the pressure in this container at a temperature of 25 °C? 2.) A closed 5.00 L container

asked by Sunny on April 24, 2016
33. ## Area of rectangle

The length of the flag needs to be 1.9 times the height. If the flags height is 3 feet, then what is the area of the flag?

asked by Dexter on April 16, 2014
34. ## Math

What if the mural were in the shape of a square with an area of 81 square feet. What would the height of the mural be? Explain

asked by Alena on April 9, 2015
35. ## geometry

The area of a triangle is 6 square feet. The base is 3 times the height. What is the base of the triangle?

asked by laura on March 22, 2016
36. ## math

an equilateral triangle has an altitude length of 36 feet. determine the length of a side of the triangle

asked by anonymous on December 13, 2011
37. ## Math

A small rug is 36 inch. long. It's width is 2/3 of it's length. What is the width of the rug in feet?

asked by Student on February 11, 2018
38. ## math

A pet shop has a total of 17 dogs and birds. Altogether there are 48 feet. How many dogs are there and how many birds?

asked by Tyga on March 14, 2010
39. ## geometry

the shadow of a tree is 8 feet long. How long of a shadow does a 6 foot man cast?

asked by Dione on March 4, 2012
40. ## Math

A square plot of land has an area of 1,156 square feet. What is the perimeter of the plot?

asked by Johnny on October 17, 2016
41. ## math

If the perimeter of a rectangular house is 44 yards, and the length is 36 feet, what is the width of the house in yards?

asked by Anonymous on December 14, 2011
42. ## algebra

the width of a rectangle is 3 less than twice the length of x. if area of rectangle is 43 in sq ft. which equation can be used to find length in feet a. 2x(x-3)=43 b.2x+2(2x-3)=43 c.x(3-2x)=43 d.x(2x-3)=43

asked by Anonymous on March 29, 2013
43. ## MAth

A model length of 12 cm. represents an actual length of 102 feet. What is the scale model?

asked by James on February 8, 2013
44. ## MATH!!!

Consider the following where s is in feet and t is in seconds. s(t) = t3 + 4t2 + 6t + 4 (a) Find v(t). v(t) = (b) Find a(t). a(t) = (c) Find v(3). (d) Find a(3). see above. Please stop posting under different names. WHAT?!!

asked by Help me! on February 20, 2007
45. ## Math

A cable is 32 feet 10 1/2 inches long is to be cut into 8 1/2 inches lengths. Allow 1/16 inch for each saw cut.

asked by Richard on May 17, 2015
46. ## math

If the lengths of an object are measured in feet, then the area of the object will be measured in which of the following units of measurement?

asked by Elita on May 4, 2018
47. ## Math

The area of a football field is 57600 square feet what is the area in square yards?

asked by Jake on September 15, 2017
48. ## geometry

the length of a rectangular portrait is 2.5 times the width. the perimeter is 28 feet. what is the length of the portrait

asked by carla on May 28, 2015
49. ## geometry

the area of the first triangle is 22 sq feet. if the scale factor of two similar traingles if 3, what is the area of that second triangle>?

asked by dylan on January 18, 2011
50. ## Math

A rope of 17 1/2 feet long is cut into 7 pieces. If the pieces are the same length, what is the length of each piece?

asked by ? on July 18, 2016
51. ## Math 2

Olivia ties 2.5 feet of ribbon onto one balloon how many yards of ribbon does Olivia need for 18 balloons?

asked by Mia2 on February 14, 2014
52. ## Math

A 10-foot fence was set 2 5/6 feet into the ground. What is the exact length of the fence above ground?

asked by Anonymous on September 21, 2013
53. ## Math

A giraffe is 18 feet tall. How tall is the giraffe in inches?explain how you determined your answer.

asked by Shannon on November 30, 2015
54. ## math

A small rug is 36 inches long. Its width is 2/3 of its length. What is the width of the rug in feet? THANK YOU!

asked by kymy on November 14, 2014
55. ## math

William is traveling at a rate of 75 miles per hour. How fast is William traveling in feet per second?

asked by Carl on December 4, 2017
56. ## math

A board 3 5/8 feet long must be sawed. from a 6-foot board. how long is the remaining piece?

asked by kn on June 21, 2014
57. ## Math

Given 1 mile=1760 yards convert 6,688 yards to miles. Now convert it to feet

asked by Jerald on October 26, 2013
58. ## physics

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of

asked by promise on April 12, 2015
59. ## physics

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of

asked by solomon on April 17, 2015
60. ## Managerial Economics

Please check Here gasoline output is mesured in thousands of gallons, fiber output in the thousands of square feet, and crude oil in thousands of barrels. The product's profits per unit output are \$.50 per gallon for gasoline and \$.75 per square foot for

asked by BJ on January 9, 2010
61. ## history

I am doing a "report" on the gas Chambers in Auschwitz during WWII. I am trying to figure out more about how long it took for the prisoners to learn the truth of the gas chambers but I cant find anything help please?

asked by Karissa on February 21, 2010
62. ## Math

The image below shows two dilated figures with lines KL and K’L’ drawn. If the smaller figure was dilated using a scale factor of 2, what relationship do lines KL and K’L’ have?

asked by katrina on January 2, 2017
63. ## Physcis

Determine the acceleration of the marble from the straight line equation you calculated in question 2. So the equation i found in Q2 was y=9.84x+6.79 How do i figure out acceleration from this? please help!

asked by Anonymous on November 5, 2011
64. ## English

I was wondering if someone can help me figure out what point the author is making in "On the Pleasure of Hating" by William Hazlitt. And what a good quote from his On the Pleasure of Hating" to use is.

asked by taylor B on September 12, 2011
65. ## Math

The perimeter of an equlateral triangle is 45 inches. A rectangle whose width is 1/3 its length has a perimeter of 48 inches. Which figure has the longest side? Explain.

asked by Angel on November 19, 2009
66. ## Chemistry

What formula do I use to figure. 16.5 g of KCL (MM=74.55 g/mol) is dissolved in enough water to make 575 mL of solution. Calculate the molarity of the KCl solution.

asked by Norma on July 25, 2010
67. ## physics

The intensity of the light that reaches the photocell in the figure below is 104.6 W/m2, when θ = 26°. What would be the intensity reaching the photocell if the analyzer were removed from the setup, everything else remaining the same?

asked by Anonymous on April 10, 2014
68. ## precalc

the graph of a cubic function has a local min at (5,-3) and a point of symmetry at (0,4). At what point does a local maximum occur? i don't quite know how to figure this one out, any help?

asked by Kate on February 11, 2008
69. ## Calculus

I need to find the derivative of the following problem via logarithmic differentiation, but I'm getting stuck. I know how to solve via logarithmic differentiation, but I can't figure out how to re-write the exponent(s) as logs. Could someone help me? y=

asked by Jessie on January 24, 2008
70. ## Geometry

A plane is heading west at 200 mph. The wind is blowing S30°W at 25 mph. 1. what is the ground speed of the plane? I could not figure this one out. Please help?

asked by Amber on May 21, 2012
71. ## Math

The following figure is a rectangular box in which EFGH and ABCD are rectangles and BF (with a bar on top) is perpendicular to planes EFGH and ABCD.Are BD and GH parallel?

asked by Lilly on September 19, 2010
72. ## Calculus

Find the slope of the functions graph at a given point. Then find an equation for the line tangent to the graph there. f(x)=2*square root of x. (1,2) Could someone please help me figure this one out?

asked by Jess on July 21, 2013
73. ## physics

A body of mass m is suspended by two strings (right strings equals an angle a with horizontal and left an angle B with vertical. Dra the figure.

asked by rupesh on April 21, 2014
74. ## MATH

In Triangle ABC, medians BE and CD are produced respectively to points X and Y such that CD=DX and BE=EY as shown in the figure. Show that the points X, A and Y are collinear. Also show that A is the mid point of XY

asked by PRIYA on March 11, 2016
75. ## calculus

using the intermediate value theorum, prove that arctanx = arccosx has a solution. i've gotten that the domain of arctanx is -pi/2 to pi/2 but i'm not sure where to go from here...can i move the arccosx to the left? when i do that, i can't figure f(pi/2)

asked by terra on October 24, 2011
76. ## Maath

The surface area S of the rectangular solid in the figure is S = 2(24) + 2(4x) + 2(6x). Find the length x of the box if the surface area is 248 square centimeters.

asked by Kelly Vitteli on September 18, 2012
77. ## Math

An isosceles triangle has an area of 24 cm squared, and the angle between the two equal sides is 5 pi/6. What is the length of the two equal sides? I can't figure out how to set up this problem please help! Thank you!

asked by Cassie on January 20, 2014
78. ## math

Hi, Im trying to do my math corrections and I cannot figure out 3!. That was explained no where in my lessons. Can someone please explain the steps? I used my calculator and mathway.com but mathway.com makes me pay for the steps. Please help me:)

79. ## Algebra

I've been trying to figure out this equation for over an hour but all the answers I get are wrong. The equation is 0.9=-10I^2+6I . The answer is supposed to be 0.3 and it does work out, but I have tried all different ways to solve for I and nothing seems

asked by Amy on January 12, 2008
80. ## Algebra 1

So as I was doing me hw, I ran into this question, and I cant figure it out... Anyone wanna try? 7. The ratio of the perimeters of two triangles is 2:5. The perimeter of the larger triangle is 20 cm. What is the perimeter of the smaller triangle?

asked by Miranda on January 11, 2013
81. ## physics

A bead slides on the frictionless wire as shown in the figure attached. If the speed of the beead is 2.0 m/s when its at A, how fast will the bead be going at point B and at point C?

asked by lex on September 22, 2016
82. ## math

I am helping my daughter with this proportion problem. The book says the answer is x = 112. I cannot figure how that is. Here it goes x/168 = 66 2/3 /100 That is x over 168 is equal to 66 2/3 over 100.

asked by Trevia Smith on May 28, 2009
83. ## Physics

Ali and hid father sit at the ends of a see-saw, 2 m from the pivot, as shown in figure 5.12. Where should ali's mother sit in order to balance the see-saw?

asked by Fiesta on January 30, 2015
84. ## physics

A toy car in the figure below runs off the edge of a table that is h = 1.150 m high. The car lands d = 0.410 m from the base of the table.

asked by ann on October 27, 2014
85. ## Alegebra

I need some help just setting up an equation for this problem, I cannot figure it out. One train travels from A to B at 19mph. A second train travels from B to A at 21 mph. One hour before the trains pass each other, how far apart are they?

asked by Jeff on November 11, 2015
86. ## Algebra

Find an equation of the line having the given slope and containing the given point. M=4/5, (7,-8) I can totally due the equation y+8=4/5x-28/5 but keep getting the answer wrong. I cannot figure out how subtracting 8 they get the answer y=4/5x-68/5 PLEASE

asked by Tammy on June 14, 2011
87. ## college physics

A person walks from point A to point B as shown in the figure below. What is the person's displacement relative to A? What is the magnitude? What is the direction ° (counterclockwise from the +x-axis)?

asked by tumcee on April 17, 2010
88. ## Calculus

find the value of a, if it exists, such that the following function is continuous at X = 2. piecewise function f(x)={x^2-3x+1, if x>2; a, if x=2; 3-2x, if x

asked by Sarah on June 16, 2016
89. ## math

Selma went to the mall and spent 1/3 of her money. She then lost 1/2 of what she had left. She then had \$5. How much money did Selma originally have? I know the answer is 30 but how do I explain others how to figure it out easily?

asked by CGM on April 8, 2013
90. ## MAth

the two figures below are congruent. Find the measure of the angle that isn't labeled on either figure? Shows a 41, 86, degree on one, and the other one shows a 133 degree.

91. ## Physical Science

Trying to figure this out and can't: The elevation of a streambed is surveyed near a bridge to be 2,367m. At another bridge 12.2km downstream the elevation is 2,232m. What is the gradient of this stream?

asked by mel on April 21, 2012
92. ## math

Subtract simplify by collecting like radical terms 6square root symbol 75 -7square root symbol 3 I cant figure out how to square 75?

asked by Allison A on November 28, 2011
93. ## physical

A 1.67-kg block (M1) and a 5.07-kg block (M2) are connected by a massless string. Applied forces, F1 = 11.3 N and F2 = 4.85 N, act on the blocks, as shown in the figure. a) What is the acceleration of the blocks?

asked by duygu on October 20, 2014

My homework is converting repeating decimals into fractions. I can't figure out the steps for this problem: 0.083 and the 3 is the repeating number. Can someone please explain the steps to me?

asked by Landry on August 31, 2017
95. ## Math

Hello. I need help with this question. A coin is tossed and a number cube is rolled. What is P(heads, a number less than 5 A 1/3 B 5/12 C 2/3 D 5/6 Based on the Info given, i can not figure out the answer to this question.

asked by Anonymous on June 7, 2014
96. ## math

graph the equation by plotting the points: 35-5y=0 i know how to put the solutions on the graph. i am stuck on this equation. i think x=0 but i can not figure for y. please help me and show me the steps to solve this.

asked by barb on August 19, 2010
97. ## Physics

In the figure below, assume that the slope is frictionless and that the two blocks are connected by a massless cord. Assume the following: θ1 = 37° θ2 = 45° m1=3kg m2=0.86kg. What is the tension in the cord?.

asked by Ariel on February 29, 2012
98. ## Math Linear Equations

Two lines are drawn on a co-ordinate axis. The equation of the first line is y=-2,and the equation of the other line is y=3x+1. What are the co-ordinates of their intersection point? I have been on this for hours and can't figure out how to do this. Please

asked by Cherie on January 2, 2015
99. ## math

How would I figure out a random tile grid pattern for a room that is 25'1" in length and 12'7" in width with tile that is 16"x16" and 12"x12" with the majority being 12"x12"?

asked by Faith on May 10, 2013
100. ## Math

In Triangle ABC, medians BE and CD are produced respectively to points X and Y such that CD=DX and BE=EY as shown in the figure. Show that the points X, A and Y are collinear. Also show that A is the mid point of XY

asked by Somanna on June 5, 2015