# 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 162
1. ## Math

Farmer wants to enclose a rectangular area that is 600 sq. ft. He is using his barn for one of the sides. The barn is 30 feet long and he does not want the pen to extend longer than the barn. How much fencing will need to be purchased?

asked by Cindy on February 17, 2014
2. ## Calc II

A worker on scaffolding 65 ft above the ground needs to lift a 390 lb bucket of cement from the ground to a point 20 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required?

asked by Liz on October 16, 2012
3. ## Math

A person is pulling a freight cart with a force of 70 pounds. How much work is done in moving the cart 120 feet if the cart's handle makes an angle of 18° with the ground

asked by Justin on December 2, 2012
4. ## Math

Corinda has 400 feet of square fencing to make a play area. She wants the fenced area to be rectangular.What dimensions should she use in order to enclose the maximum possible area?

asked by Anonymous on February 4, 2013
5. ## physics

A worker on scaffolding 75 ft above the ground needs to lift a 410 lb bucket of cement from the ground to a point 25 feet above the ground by pulling on a rope weighing 5 lb/ft. How much work is required

asked by Anonymous on October 15, 2014

Although I vaguely see DrBob222's concept, I still need some help in the set up. Thank you. A 10 lb. frozen boneless roast needs to be thawed and baked to a temperature of 200 degrees F. The storage freezer maintains a temperature of -10 degrees F. Pork

asked by Sejul on September 3, 2012
7. ## grammar

Can some read the paragraph below and check my grammars are correct. The climate is changing. The Earth is warming up, and there is now overwhelming scientific consensus that it is happening, and human induced. Many are agreed that climate change may be

asked by Anonymous on March 19, 2008
8. ## Stats

Find the P-value for a left tailed hypothesis test with a test statistic of z= -1.77. Decide wether to reject the null if the level of significance is alpha= 0.05. Please help I've tried everything and I can't figure out how to get the right answer..

asked by Christina on April 17, 2014
9. ## 12th Calculus

water drains fromteh conical tank shown in the figure at the rate of 5 ft^3/min. a. what is the relation between the variables h and r? b. how fast is the water level dropping when h =6ft?

asked by may on December 3, 2008
10. ## Physics

A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

asked by Joe on April 2, 2014
11. ## Math

3 tbsp. of extract are mixed with 250 ml. of oral suspension base. What is the final concentration of the suspension? I request the proper formula to figure out how to work this problem. Thank you.

asked by Denyse on August 19, 2012
12. ## Genetics

A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning. I'm really stuck on this question, it's my last one and I've been looking at

asked by Anonymous on March 19, 2019
13. ## medical transcription

Im working on a transcription and i know this sentance is not right but i cant figure out how to spell it correctly can any one tell me what it is or how to spell it so i can look it up thx what i need help on is the last word heart regular rate and rhythm

asked by sam on April 26, 2012
14. ## calculus

The figure below shows the curves y=square root of x, x=9, y=0 and a rectangle with the sides parallel to the axes and its left end at x=a. Find the dimensions of the rectangle having the maximum possible area.

asked by Anonymous on November 13, 2011
15. ## physics

Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 45 kg, m2 = 39 kg, and m3 = 50 kg. The pulling force is equal to T3

asked by anonymus on August 13, 2018
16. ## ALGEBRA

Suppose you see a car with an advertised price of \$30,250 at \$605.15 per month for 5 years. What is the amount of interest paid? I need help with this problem.Please give me the steps to figure this problem out.

asked by MONICA on November 26, 2011
17. ## physics

A block of mass m = 3.60 kg is pushed a distance d = 2.60 m along a frictionless, horizontal table by a constant applied force of magnitude F = 11.0 N directed at an angle è = 28.0° below the horizontal as shown in the figure below.

asked by Anonymous on September 27, 2014
18. ## Physics

A m1 = 4.20-kg block on a smooth tabletop is attached by a string to a hanging block of mass m2 = 2.60 kg, as shown in the figure. The blocks are released from rest and allowed to move freely.

asked by Manuel on October 5, 2010
19. ## physics

Calculate the magnitude of the force FM required of the "deltoid" muscle to hold up the outstretched arm shown in the figure below. The total mass of the arm is 2.8 kg and θ = 11°. d=12cm D=24cm

asked by Rpbert on October 29, 2016
20. ## Physics

A 10kg mass is suspended as shown: i.gyazo[dotcom]/47dc49d5ec1eebe950472dba5f692e70.png (remove the brackets) What is the tension in the cord between points A and B? What is the tension in all of the cords? Thanks for the help, I just can't figure it

asked by Amanda on November 11, 2015
21. ## physics

The figure below shows a plot of potential energy U versus position x of a 1.30 kg particle that can travel only along an x axis. (Nonconservative forces are not involved.) In the graphs, the potential energies are U1 = 10 J, U2 = 35 J, and U3 = 50 J.

asked by Raj on October 22, 2014
22. ## phyics

You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude of 65 N·m. Using the data in the figure, determine the magnitude F of the force that you must exert on the wrench.

asked by bobby on November 1, 2013
23. ## Math

So I found the derivative of an expression and I cannot figure out how to simplify the final answer into the desired form. I got -csc^2(X)/(1+cotx)^2. Now how do I simplify this into -1/(sinx+cosx)^2. Help, it's killing me ahha. Thanks!

asked by Beth on December 23, 2015
24. ## chem

how do I figure out the molecular formula for The concentration of lead (II) ions in a sample of polluted water that also contains nitrate ions is determined by adding solid sodium sulfate.

asked by cindy on October 5, 2010
25. ## Chemistry

What is the concentration of arsenate ions in 3.5 M solution of arsenic acid? The acid-dissociation constants of H3AsO4 are: Ka1 = 5.0 x 10-3 Ka2 = 9.3 x 10-8 Ka3 = 3.0 x 10-12 I can't figure out how to set up the question

asked by Kelly on March 18, 2015
26. ## AP world history help

Which of the following aided in the adoption of Christianity in the Roman Empire? I. there was no painful initiation rite II. Jesus was a human figure III. initiation was done via baptism IV. decline of Hinduism

asked by Anonymous on October 24, 2015
27. ## physics

2 point charges are located at the coordinates in the figure, how much work needs to move a point charge q = ]20ƒÊC from B to A? link to photo dropbox/s/x93u73xu2zslfqj/Untitled.png?dl=0

asked by ali on September 11, 2014
28. ## Physics

A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

asked by Joe on April 3, 2014
29. ## Physical Science

Can someone explain this rule in simple english please? "Rule for addition and subtraction: The rightmost significant figure in a sum or difference will be determined by the least accurate measurement." Example: 18.56 m - 13.2 m __________ 5.36 m = 5.4 m

asked by Amy on August 26, 2011
30. ## Physics

A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

asked by Joe on April 2, 2014
31. ## calculus

im having so much trouble figuring out how to get these answers. i already know the answers i just need to figure out how to get them... directions: find the points of inflection and discuss the concavity of the graph of the function... 1.

asked by rachel on October 23, 2011
32. ## physics

Starting with an initial speed v0, a mass m slides down a curved frictionless track (a shown in the figure below), arriving at the bottom with a speed v. From what vertical elevation h did it start?

asked by Aisling on August 23, 2012
33. ## Calculus

Given vectors u= (1,-1,3) and v= (-4,5,3) find an ordered triple that represents vectors 3u-2v. a.(16,1,-7) b.(11,-13,3) c.(10,-12,1) d.(7,-7,16) I don't want you to straight up give me the answer. I need someone to teach me how to solve this problem. I am

asked by alana on August 23, 2012
34. ## MBA Financial Accounting

How do you figure the total expense of two loans to show for year ending Dec. 31, 2006? The annual payment date is Sept. 30 with first payment due 2007.

asked by Beth on February 23, 2008
35. ## PHYSICS

Two springs, with force constants k1=175N/m and k2=270N/m, are connected in series, as shown in (Figure 1) . Part A: When a mass m=0.50kg is attached to the springs, what is the amount of stretch, x? k1 I k2 I m ? ] x

asked by ANA on March 28, 2017
36. ## Physics

"A moving object has a kinetic energy of 145 J and a momentum with a magnitude of 40.0 kg·m/s. Determine the mass and speed of the object." I simply cannot figure it out. I know that KE=.5mv^2 and that p=mv but I can't seem to piece it together. Please

asked by Jane on January 7, 2015
37. ## algebra

Simplify. Do not use negative exponents in the answer. -25a^-2/10b^-4 HAVING A HARD TIME WITH THIS ONE!! i KNOW YOU REVERSE THE LETTERS AND THE NEGATIVE POWERS ARE TURNED INTO POSITIVE AND RECIPROCATED BUT THE -24/10 I CANT FIGURE OUT FROM THE EXAMPLE I

asked by Liamz on January 14, 2015
38. ## Physics

A common pickup for an electric guitar consists of a coil of wire around a small permanent magnet, as described in Figure 25.5. Why will this type of pickup fail with nylon strings?

asked by norma on October 19, 2012
39. ## electromagnetism

#5 (5 points possible) Two identical solenoids are merged as shown in the figure. Which plot best represents the y-component of the magnetic field as it varies along the x-axis? Treat them as ideal solenoids.

asked by JuanPro on April 14, 2015
40. ## Physics

A 85.0 N weight is held in the hand. The upper arm makes an angle of 32.0° with the vertical, and the lower arm is 10.0° above the horizontal. Find the tension in the biceps tendon. See figure below.

asked by Kellie on November 8, 2011
41. ## Algebra

An investment account earns 7.5% per year compounded quarterly. How many years will it take for the account to triple its initial value. (Make sure that you round up) For the death of me, I can't figure out how to do this problem. Can anybody walk me

asked by Mark on May 21, 2018
42. ## social studies

what did they call the mummy shaped figure that worked in the afterlife's fields for the mummy? http://www.carlos.emory.edu/ODYSSEY/EGYPT/shabtis.html

43. ## Precalculus

The rectangular box shown in the figure has dimensions 10" × 7" × 3" (a = 10, b = 7, c = 3). Approximate the angle θ formed by a diagonal of the base and a diagonal of the 7" × 3" side. (Round your answer to two decimal places.)

asked by Anonymous on October 25, 2014
44. ## physics

Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 5.00 cm and b = 23.0 cm. (Indicate the direction with the sign of your answer. Assume that the positive direction is counterclockwise.) f1=

asked by alba on March 4, 2015
45. ## measurements

How much will it cost to carpet a 13 ft by 18 ft room if carpeting costs \$14.50 per square yard? I know you either find the perimeter or the area. and when I figure both of them I get P=2(13+18) P=62 62*14.50= 899 or A=13*18 A=234 234*14.50 3393 But I

asked by rmz on February 7, 2010
46. ## physics

Find the net torque on the wheel in the figure below about the axle through O perpendicular to the page, taking a = 11.0 cm and b = 23.0 cm. (Indicate the direction with the sign of your answer. Assume that the positive direction is counterclockwise.)

asked by Anonymous on April 30, 2012
47. ## Math

A semi circle sits on top of a rectangle to form the figure below find its area and perimeter use 3.4 for pie on the side 4 inches and on the bottom 6 inches what is the answer

asked by Jamie on November 6, 2017
48. ## chemistry

I need to convert a word problem that I was given into a balanced chemical equation and cannot figure out how i was type it. The problem is: Nitrogen and hydrogen gases react at extreme temperatures and pressures. Any help?

asked by Zoe on January 8, 2012
49. ## chemistry

Hey, I was just struggling with a question that I need to figure out to help me with my next lab, so if any of you guys could help me that would be greatly appreciated. Question: write a balanced equation for the reaction between H2O2 and acidified MnO4-

asked by alex on March 4, 2013
50. ## PHY

Arlene is to walk across a “high wire” strung horizontally between two buildings 10.0 m apart. The sag in the rope when she is at the midpoint is 10.0º as shown in the figure below. If her mass is 50.0 kg, what is the tension in the rope at this

asked by mei on November 28, 2017
51. ## geometry

I have a triangle ADB. AD = 2, AB = 3 DB is x. I need to find x. Additional info. AB/BC = BD/BD = AD/BD. Other triangle is DCB. DB is x, DC is 8, CB is y. Booth of triangles are connect by DB. Figure resembles a kite. (Needed to complete 3/y =x/x= 2/x. Is

asked by robin on April 20, 2015
52. ## Calculus-limits

I'm studying for the AP exam and I can't figure this problem out. I thought the answer was negative infinity but that isn't an option. Thank you in advance! What is the limit as x approaches infinity of (9x-x^2-7x^4)/(x^3+12x)? a. 9 b. 7 c. -7/12 d. -7 e.

asked by ashley on April 29, 2015
53. ## Physics

I am new at physics and having a very hard time. Could you please help. Thank you. Show that the water pressure at the bottom of the 50-m-high water tower in Figure 5.3 is 490,000 N/m2, or is approximately 500 kPa.

asked by Dillon on August 10, 2013
54. ## Physics

Three vectors are shown in the figure. Their magnitudes are given in arbitrary units. Determine the sum of the three vectors. Give the resultant in terms of (a) magnitude and (b) the angle within the positive x axis.

asked by Rachel on September 24, 2018
55. ## Physics

A uniform beam of length L = 8.00 m and weight 3.80 102 N is carried by two workers, Sam and Joe, as shown in the figure below. Determine the force that each person exerts on the beam.

asked by Joe on April 1, 2014
56. ## Physics

A crate is given an initial speed of 3.1 m/s up the 29 degree plane shown in the figure . Assume coefficient of friction = 0.17. How far up the plane will it go? How much time elapses before it returns to its starting point?

asked by Anonymous on June 18, 2012
57. ## physics

A 32 g ball rolls around a 40 cm diameter L-shaped track, shown in the figure below, at 60 rpm. Rolling friction can be neglected. What is the magnitude of the net force exerted on the ball?

asked by Anonymous on April 11, 2011
58. ## math compound interest

I can figure all of the other compound interest problems except these-In how many years would Ben's \$100,000 take to be worth \$250.000 if compounded annually at the rate of 6.5%?-Thanks and good night :)

asked by lola on January 16, 2012
59. ## raiots and perimeter

you have to figures that are similar, large one is 28yds, and the smaller one is 8yds. give the ratio of the perimeter and the ratio of the areas of the larger figure to the small one. Can someone please help not just answer but explain

asked by kevin on April 16, 2012
60. ## For Reimy

Math (Reimy) - Reiny, Thursday, June 25, 2009 at 4:46pm You are welcome Just as an afterthought... There is also a set of numbers called the pyramidal numbers, they are ... 1 4 10 20 .... Can you figure out the pattern? (Let their name be a hint.)

asked by Keira on June 27, 2009
61. ## Calculus

A friend of mine was selling the lumber from his old barn to be repurposed. Knowing that I liked old wood, he set aside a board totaling 12 feet in length for me. I want to cut it to form a rectangular frame for a mirror. What should the dimensions be to

asked by Mike Sowells on April 11, 2013
62. ## English

To which sense do the following lines from “Grandma Ling” appeal? and there I faced my five foot height, sturdy legs and feet, square forehead, high cheeks, and wide-set eyes A. hearing B. taste C. sight D. smell

asked by Anonymous on March 6, 2019
63. ## Language Arts

Which of the following is an example of the use of imahery? A. Sarah said she's ready to walk to the store whenever you are. B. As jason walked, the puddles splashed under his feet. C. I am saving money to buy Joey a new pair of headphones. D. Megan wished

asked by Callie on January 21, 2015
64. ## Physics

A circuit is composed of a capacitor C=3 μF, two resistors both with resistance R=69 Ohm, an inductor L=6.00e-2 H, a switch S, and a battery V=25 V. The internal resistance of the battery can be ignored . Reminder: The "L=x.xxenn H" notation means

asked by AAA on June 17, 2013
65. ## Astronomy

Calculate the ratio of the escape velocities from the moon and Earth. Calculate the ratio of the escape velocities from the moon and Earth In order to escape the gravitaional pull exerted by a central body on an orbiting object, it must must achieve a

asked by Manny on April 10, 2007
66. ## computer science

The problem is to calculate the usable area in square feet of a house. Assume that the house has a maximum of four rooms, and that each room is rectangular. I need help writing a program description,analysis,test,and with pseuocode with it.

asked by Michelle on September 12, 2014
67. ## Science

These questions refer to tides. 1. Why are vertical clearances of bridges along navigable waterways given as heights in feet above mean(average) water height? 2. Why would knowledge of tides be of any importance in a military landing action?

asked by Anonymous on February 16, 2014
68. ## geo

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

asked by Luis on May 9, 2013
69. ## geometry

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

asked by Lexo on November 18, 2010
70. ## Science

These questions refer to tides. 1. Why are vertical clearances of bridges along navigable waterways given as heights in feet above mean(average) water height? 2. Why would knowledge of tides be of any importance in a military landing action?

asked by Anonymous on February 15, 2014
71. ## Math

Mason is an architect and is drawing the plans for a room addition for a client. If the shape of the room is a cube, what is the volume in cubic feet if the length is 23 ft? A.529 B.1,024 C.12,167 D.32, 768 Is the answer A?

asked by Its Me on October 26, 2015
72. ## geometry

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

asked by jay on May 4, 2011
73. ## Help me anyone - Pre-Calc

A farmer uses an irrigation sprinkler system that pivots about the center of a circular field. Determine the length of the sprinkler if an area of 2340 square feet is watered after a pivot of 20°. P.S: The formula is A=1/2 theta r^2 Please help me. Thank

asked by chizoba on July 23, 2016
74. ## BC Calculus

Solve this problem algebraically, using your knowledge of derivatives. Do not solve by graphing. If 800 feet of fencing is used to enclose a rectangular plot of land that borders a river, what is the maximum area that can be enclosed?

asked by Margaret on April 16, 2018
75. ## math

Jackson is creating a water garden surrounded by a triangular patch of grass. If the pond will take up the space indicated by the circle, how many square feet of sod will he need to complete the garden (use 3.14 for and round your answer up to the next

asked by juan on February 7, 2012
76. ## College Math

A rectangle is three times as long as it is wide. Squares of side 2 feet are cut from each corner. Then the sides are folded up to make an open box. Express the volume of the box as a function of the width, x.

asked by Amy on October 5, 2018
77. ## carpentry, math

Determine the number of board feet required for joists on a one-story house 30′ × 40′, in which 2 × 8 joists will be placed 16″ OC. A. 2,052 B. 1,224 C. 1,632 D. 1,536 I honestly don't know what formula to use for this. Everything I see online

asked by doug on November 18, 2018
78. ## Calculus-Applied Optimization Quiz Problem

A rancher wants to fence in a rectangular area of 23000 square feet in a field and then divide the region in half with a fence down the middle parallel to one side. What is the smallest length of fencing that will be required to do this?

asked by Riley on October 31, 2013
79. ## physics

a 60 kg student jumps from a table 1.2m high. When his feet hit the floor he bends his knees so that the stopping time is .06s. What is the average force that the floor exerts on his body in order to stop him?

asked by Paul on November 9, 2011
80. ## Math

The original Ferris wheel introduced at the 1893 World's Fair in Chicago had a diameter of 250 feet. What is the closest distance a person who rode this wheel travelled in one complete revoulution

asked by KK on March 15, 2017

i need help with a math problem that NO ONE can figure out problem:98.13 divided by 24.27

asked by pp on October 21, 2008
82. ## Algebra 1

I need help to figure the Rational Expression of: t squared - 4 over (t + 2) squared.

asked by Evan on March 20, 2008
83. ## Math

I cant figure out how to solve this problem Solve by Factoring: 5x^2-32=-12

asked by Jaison on December 16, 2009
84. ## MATH

I have 27x^4 = 1.1 x 10^-36 I have to figure out what X equals. The answer is x= 4.5 x 10^-10 How do you get that for the answer??

asked by ARON on January 15, 2012
85. ## arithmetic

what is the decimal of 7/20 how do u figure it out i need step by step break down

asked by sandra on August 3, 2010
86. ## math

what is the area of a figure with two sides that is 2ft and two sides that is 3/4 ft

asked by rena on March 18, 2018
87. ## math

x=(-5.15-5.89i).(30/(-5.15-5.89i)) i is the suare root of (-1) what is x. please help me , i cant figure it out. thank you.

asked by layth on September 20, 2010
88. ## Math

Please help! 1.3-2.5xor equal to 1.3 I have been on this for hours and can't figure it out Thank you

asked by Cherie on February 14, 2014
89. ## math

area of a 7cm. by 7cm. complex figure

asked by desiree on May 13, 2010
90. ## geometry

Find the perimeter of the figure if AB = 8 inches and BC = 14 inches.

asked by Anonymous on March 20, 2012
91. ## Algebra2

Help How do I figure out: (cos 40)(cos20) - (sin 40)(Sin 20) Thank you

asked by jeff on May 28, 2010
92. ## Chem II

How do you figure freezing points and boiling points?

asked by Ken on February 14, 2008
93. ## Math

The answer is 5/8 the digits are 1,1,2, and 8.I can't figure out how to find the answer.

asked by Blaine on May 11, 2010
94. ## math

the ? says "find the next 2 terms of the sequence. 1. 3n+1 2. 4n-2 How do I figure out what the next terms are?

asked by RJ on January 5, 2009
95. ## Algebra 2 *edit*(below)

Hello I was wondering how this problem would be set up.If I can see how its set up im sure I can figure it out. thanks

asked by Alyssa on August 24, 2007
96. ## Math

i cant figure out how 2 reduce A negative squared B squared..... 12-8

asked by Coley on March 26, 2007
97. ## geometry

Draw and mark a figure in which M is the midpoint of ST, SP = PT, and T is the midpoint of PQ.

asked by tina on September 1, 2010
98. ## Algebra

Factor completely: X^3n+y^3n Do I factor it as a cube? Can't figure it out

asked by John on August 15, 2015
99. ## Math

1.) How many of symmetry does the figure below have? If there are no lines of symmetry, write none A.)1 B.)5 C.)10 D.)None

asked by Quavo #FreeOffset on October 22, 2015
100. ## geometry

tell if the figure is a star polygon, a polygon, or other, and how many sides it has. {9/3}

asked by jeng on October 24, 2009