# 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 147
1. ## Physics

A small bug is nestled between a 1-kg block and a 2-kg block on a frictionless table. A horizontal force can be applied to either of the blocks as shown in figure Q5.24 (i) In which situation illustrated in the figure (a) or (b), does the bug have a better

asked by Avery on September 18, 2012
2. ## Metric System

I have two queations that have to do with the metric system: 1- What connections can you identify between the metric units for length and volume? 2- Why is it difficult to convert miles to yrads or feet? Thanks in advance for your help! 1- What connections

asked by Olivia on August 18, 2005
3. ## BIO

3. Fish have a two chambered heart called a single loop. discuss the benefits and drawbacks of this system. 4. Amphibians have a three chambered heart. Discuss the importance of the extra chamber in terms of the obvious physical differences that amphibians

asked by SOMEONE HELP THIS PERSON on April 14, 2013
4. ## Chemistry

I did a lab and got a bunch of questions about the lab. Here is what my lab was about: Properties of alcohols: First, I wrapped the bulb of a thermometer with a tissue secured with a wire. Then I squeeze enough methanol onto the tissue to completely

asked by Anonymous on May 18, 2009
5. ## Trigonometry

Round answer to two significant digits. A telephone pole 40 feet high is situated on an 13° (H) slope from the horizontal. The measure of angle CAB is 21°. Find the length of the guy wire AC.

asked by Karen on October 22, 2014
6. ## Math

I am having trouble with the concept of unit conversions for math C30. I am in cyber school and it does not seem to be explaining it as much as I would like. Here is the question: Change 25 kilometers per hour into feet per second. Can you please explain

asked by Jill on May 19, 2012
7. ## Calculus

Oil from a ruptured tanker spreads in a circular pattern. If the radius of the circle increases at the constant rate of 1.5 feet per second, how fast is the enclosed area increasing at the end of 2 hours?

asked by Karol on November 23, 2010
8. ## Calculus

Oil from a ruptured tanker spreads in a circular pattern. If the radius of the circle increases at the constant rate of 1.5 feet per second, how fast is the enclosed area increasing at the end of 2 hours?

asked by Karol on November 23, 2010
9. ## Precalculus

A wheel rolling at a constant speed has a radius of 15 inches and takes 30 seconds to roll 100 feet along the ground. What is its angular velocity? Use 3.14 for pie, and solve to two decimal places.

asked by Liz on February 22, 2012
10. ## algebra 2

You toss a polybutadiene rubber ball 40 feet straight up from ground level. Each time it bounces, it rebounds 2/3 of the distance from which it fell. It continues bouncing indefinitely. How far does it travel before it comes to rest?

asked by Kate on August 12, 2016
11. ## math

a cabinet will inclose a rectangular loud speaker system and will have an internal volume of 2.4 cubic feet. The height will be 1.5 times the width. What are the dimesnions of the enclosure that can be constructed at a minimum cost?

asked by diwas on November 13, 2012
12. ## Calculus

A baseball player hits a line drive to center field. He runs from second to third at 20 feet/sec. How fast is the distance from the runner to home plate changing when he is halfway to third base?

asked by Shawn on December 30, 2010

I've never seen a problem like this, please help. I think we have the number part right but what would the unit be once the math is done? Please show me how you came up with the answer so I will know for next time. 30 miles/1 ton x 5280 feet/1 mile x 1

asked by Dippy on April 9, 2009
14. ## algebra

A college is planning to construct a rectangular parking lot on land bordered on one side by a highway. The plan is to use 520 feet of fencing to fence off the other three sides. width length

asked by mm on February 7, 2016
15. ## Trigonometry

Round answer to two significant digits A telephone pole 40 feet high is situated on an 13° (H) slope from the horizontal. The measure of angle CAB is 21°. Find the length of the guy wire AC.

asked by Karen on November 8, 2014
16. ## Math

A Ferris wheel makes 3 revolutions per minute. If the diameter is 20 feet, write an equation to describe the height off the ground of a particular seat after t seconds. I got d=10cos(6pi)t as the answer, is this correct?

asked by Andrew on January 1, 2015
17. ## Math

The distance to fly direct from Detroit to Los Angeles is about 1,960 miles.The flight takes 4 hours 53 minutes.What is the plane's average speed in feet per second to the nearest foot per second?

asked by Sarah on September 19, 2012
18. ## Math

A figure has 8 sides; all sides meet at right angles. The left-most vertical side measures 31 meters. The lower most horizontal side measures 69 meters. The right-most vertical side measures 31 meters. The upper right horizontal side measures 23 meters.

19. ## Math

Find the area of the complex figure. The figure has 8 sides, all sides meet at right angles. The left-most vertical side measures 31 meters. The lower most horizontal side measures 69 meters. The right-most vertical side measures 31 meters. The upper right

asked by Help I need somebody not just anybody on April 7, 2017
20. ## Math

Find the area of the complex figure. The figure has 8 sides, all sides meet at right angles. The left-most vertical side measures 31 meters. The lower most horizontal side measures 69 meters. The right-most vertical side measures 31 meters. The upper right

asked by Help I need somebody not just anybody on April 7, 2017
21. ## stiochiometry

Hello! This is my take home final for my chemistry class and I can use any resources to help me solve the questions. Can someone help me get started on all of them? Thanks… (note: he wants us to solve them using stoichiometry) 1. The resting calorie use

asked by Roberta on May 16, 2008
22. ## English

I forgot to include the following statements, too. Thank you very much for your help! 1) A narrator can be external to (?) the story and talk about events he has not taken part in. 2)A third-person narrator refers to the characters using the third person

asked by Franco on March 9, 2010
23. ## Physics

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the connecting rope is very

asked by Shelby on December 11, 2016
24. ## 6th grade science project

My 1st science project and we have something to turn in each week from now till the science fair. this week it is the variables. Project from science buddies. I am doing-Ocean Currents: modeling the 'Global Conveyer Belt' in your Kitchen. Am I correct in

asked by Reed on February 12, 2011
25. ## Chemistry

Construct a cycle with the following steps: Begin with: 1 mol ideal monatomic gas at 300 K and 1 bar. Point A. 1. Isothermal reversible expansion till volume gets twice its original value. Point B. then, 2. Irreversible adiabatic expansion against

asked by Vivian on October 6, 2014
26. ## Mathematics

In the adjoining figure,the slant height and the total surface area of square based pyramid are 12cm and340sq.cm respectively.find the perimeter of the base and volume

asked by Bhawana on July 18, 2016
27. ## TRIG

Verify the following identity. 1) sin(x+y) __________ = tanx+tany cosxcosy 2) Write cos3x in terms of cosx I cannot figure out how to solve for identities they are so hard. Any help appreciated!:)

asked by ALISON on October 23, 2011
28. ## science

What is the visual reaction when CuSO4 and NaCO3 is combined? I know what to do, I just forgot the info at school and I need this done by tomorrow. I would prefer to figure it out on my own but I don't have the chemicals at my house and I can't find

asked by Anonymous on October 19, 2014
29. ## Thermochemistry

What volume of benzene (C6H6, d= 0.88g/ml, molar mass= 78.11g/mol) is required to produce 1.5x10^3 kJ of heat according to the following reaction? I just can't figure out what equation to use to solve this. Help, please?

asked by Anon on October 17, 2016
30. ## isu-math11-HELP DUE TOMM PLZ

okay ia m working on a isu and i am trying to figure out the sin regression of points and i am getting a singular matrix error? any idea guys:? i am have been trying for the past 3 days and nothing its due tomm plz help

asked by just wondering on April 5, 2010
31. ## Chemistry

For a certain respiration, the free energy is -83 kJ/mol. The proton gradient consists of PH change = 1 and -0.12 Volts. I'm supposed to figure out how many protons could be pumped per two electrons transferred. How would I go about figuring this out?

asked by Jamie on February 15, 2019
32. ## chemistry

using the titration equation below calculate the number of moles of molecular iodine (I2) that must have reacted with the sodium thiosulfate I2(aq)+2S2O3^2-(aq) ---->S4O6^2-(aq)+2I-(aq) Can someone plz help me to figure this out with steps and explanation

asked by Yul on November 16, 2011
33. ## Physics

I can't figure this question out. If there are three weights attached to the corners of an equilateral triangle with side length 10 cm Measured from the bottom left corner, what is the center of mass of this object if M1 = 0.1 kg, M2 = 0.2 kg, and M3 = 0.3

asked by Paul on February 22, 2011
34. ## Physics

The rocket sled shown in Figure 4.5 accelerates at a rate of 29.0 m/s2. Its passenger has a mass of 66.0 kg. Calculate the direction and magnitude of the total force the seat exerts against his body.

asked by Michelle on June 14, 2014
35. ## science

I am trying to figure out how to teach young students, say 3rd/4th grade the six steps of the scientific method in a simplified way they would understand...Any ideas?? Any examples/and /or sites?? Thanks, jarrad

36. ## chemistry

Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each Al atom has a radius of 1.43 angstroms, what is the length of a side of the unit cell?

asked by allie on October 20, 2009
37. ## Spanish

Tienes _______ materiales que me prestes para la clase de geometría. algunos algún algunas alguna can someone please help. I cant figure out which of the four choices are supposed to fill the blank.

asked by Anna on June 2, 2008
38. ## Science

This question I posted yesterday as well, but received no help. There wasn't any info about it in my book, so I'm wonderig if you could help me with it. Why might scientists want to figure out a way to promote cell division in mature nerve cells?

asked by Sara on May 4, 2010
39. ## Chemistry

Refer to the following equation: 4NH3 + 7O2= 4NO2 +6HO, How many moles of ammonia would be required to produce 11.9 mol of water? Can you please walk me through the steps on how to figure this problem?

asked by Jessica on March 16, 2012
40. ## Maths

I'm really getting stuck, I've spent a day trying to figure this out, but don't understand. Please could someone help me. Eph = hcT/b I need to rearrange to make b the subject and show and express each term as base SI units

asked by Amanda on January 18, 2016

embedded protein in the electron transport chain where h+ ions flow back into the matrix of the mitochondria Crossword puzzle 11 spaces sixth letter is n cant figure it out?

asked by bob on February 14, 2013
42. ## Math

Can someone please help me! A regular 6sided die is rolled three times. Find the probability of each event: a) Three 6s in a row b) 5,1,even c) Odd, greater than 2,5 Show all work I have been looking at examples and trying all night and I can't figure this

asked by Cherie on April 10, 2013
43. ## Chemistry/physics

Calculate the final temp. of 100g of Ag at 40 C is immersed in 60.0g of water at 10.0 C. SH of Ag is 0.065 cal/g/C SH of H2O is 4.184 J/g/C I can't figure out how to put delta T in the equation when I haven't found it yet :-\

asked by Natalie on September 26, 2010
44. ## chemistry

Which of the following diatomic species are paramagnetic and which are diamagnetic? A blank molecular orbital diagram (Part B 1 figure) has been provided to help you. Drag the formulas to the appropriate magnetic bin :C2^2+,Li2-,B2^2-

asked by defferan on November 19, 2008
45. ## Social Studies

Describe the role of shariah in Islam. What types of laws would one expect to find within Islamic governments, and how are they enforced? This was one of my questions on my homework, and I can't figure out a solid answer to it. Thank you!

asked by Sarah on December 2, 2015
46. ## LEATURE

In The Call of the Wild, what valiant, tragic figure among the dogs must finally be put down for the good of the lives of the team? A. Pike B. Spitz C. Dub D. Sol-leks

asked by Anonymous on April 1, 2013
47. ## physics

Two artifacts in a museum display are hung from vertical walls by very light wires, as shown in the figure.Find the tension in the horizontal wire ifw=158Nandm=30.0 kg.

asked by Anonymous on October 22, 2012
48. ## English

I need help in trying to figure out the verb tense in this sentence I remember last year when was trying to choose the right school and worrying about it a lot. One day, a friend says that, instead of talking about all the time I should visit a few places

asked by jennifer on November 13, 2015
49. ## physics

How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 85m at a speed of 96km/hr? How do I figure this out if no mass is given?

asked by Anonymous on October 3, 2010
50. ## math

Suppose that a hypothesis test is to be carried out by using á = 0.05. What is the probability of committing a type I error? (Give your answer correct to two decimal places.) I can not figure out the formula for this I have tried several and they do not

asked by Sue 8 on June 21, 2013
51. ## Math

Thank you Ms. Sue to my question on the coin collection. I just haven't figure out when to divide and when to multiply with these word problems this past week. So my answer will be 2/3 times 13/25 = 26/75 Thank you and have a nice evening.

asked by Alice on March 13, 2015
52. ## Economics Supply and Demand

The demand function is Q=600-P with P being the price paid by consumer. I know the first P is \$400 and Pnet is 160. There is 40% co insurance,. How do I figure out the quantity demanded? Our instructor said it was 440 but how do you get to that number?

asked by Lisa on February 27, 2014
53. ## chemistry

I know how to use the equations pv=nrt and P1xV1/n1xT1 = P2xV2/n2xT2, but I don't understand when to use them. I have a test tomorrow and I'm going over some word problems, but I can't figure out how decide which formula you need to use. Is there a

asked by Kate on May 7, 2008
54. ## US History

Hello! I have to do a project about a colony that became a state, and I decided to do Connecticut. There's some things I need to find out, like who were the first settlers, what special problems did they face, and who were the early leaders? Can someone

asked by michelle on January 25, 2011
55. ## History

Can anybody help me figure out things that happen that relate to Progressivism and the Progressive Era in this video? American Experience TR, The Story of Theodore Roosevelt Part4 4 PBS Documentary

asked by TayB on March 12, 2015
56. ## Algebra 2

Soo the equation is 25y^2-9x^2-200y-36x+139=0 and for the center is got (2,4) and the vertices I got (2,7) and (2,1) But i cant figure out how to find the slopes of the asymptotes and it wants the answer is reduced fraction please explain

asked by Nancy on May 13, 2012
57. ## Physics B

Part 1 A 36 kg girl is standing on a 65 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a ﬂat, frictionless supporting surface. The girl begins to walk along the plank at a constant speed of 1.89 m/s to the right

asked by Sarah on November 12, 2012
58. ## PreCal

A ball was kicked with an initial velocity of 35 feet per second at an angle of 15 degrees. Find the components of the velocity. Round your answers to the nearest hundredth.

asked by Rose on May 14, 2017
59. ## Math

A circle with center O has a diameter of 14 feet. Points M and N are placed on the circle so that M

asked by Lu on June 4, 2017
60. ## Math

A car moves along a straight road in such a way that its velocity (in feet per second) at any time t (in seconds) is given by v(t) = 3t sqrt(64−t^2) (0 ≤ t ≤ 8). Find the distance traveled by the car in the 8 sec from t = 0 to t = 8.

asked by Vanessa on April 14, 2014
61. ## precalculus

A farmer needs to build a rectangular pen that is 800 square feet and has two bays. What equation can he use to minimize the cost of the fence and what are the dimensions of the pen?

asked by sara on December 2, 2015
62. ## geometry

A tricycle tire has a diameter of 24in.How many feet does the tricycle travel when the wheel makes twelve revolutions? round to the nearest hundreth

asked by Jacobb on June 17, 2011
63. ## Math

Michael wanted to make a quilt with an area of 42 square feet. What are its possible dimensions if they must be whole numbers? Which length and width makes the most sense for a quilt?

asked by BUB on April 20, 2015
64. ## Physics

A 170 pound man has to slide down a rope that can only support 150 pounds. How long will it take him to reach the ground 35 feet below if he keeps the rope from breaking?

asked by Talia on November 16, 2012
65. ## trigonometry

An airplane rises vertically 1000 feet over a horizontal distance of 1 mile. To the nearest degree what is the angle of elevation of the airplane’s path?

asked by Anonymous on June 9, 2014
66. ## Pre-calculus

Jana hit a golf ball with an initial velocity of 102 feet per second at an angle of 67° with the horizontal. After 2 seconds, how far has the ball traveled horizontally?

asked by Becca on February 19, 2013
67. ## Physics

A 170 pound man has to slide down a rope that can only support 150 pounds. How long will it take him to reach the ground 35 feet below if he keeps the rope from breaking?

asked by Talia on November 16, 2012
68. ## trigonometry

the base of an isosceles triangle measures 108 feet and forms an angle of 55 degrees with one equal sides. find the perimeter of the triangle

asked by jer on January 3, 2016
69. ## physics

A 170 pound man has to slide down a rope that can only support 150 pounds. How long will it take him to reach the ground 35 feet below if he keeps the rope from breaking?

asked by Talia on November 16, 2012
70. ## math

Find the angle of depression from the top of a lighthouse 191 feet above the water level to the water line of a ship 4 miles offshore.

asked by nick on October 19, 2016
71. ## calc

A kite 80 feet above the ground moves horizontally at a speed of 8 ft/sec. At what rate is the angle between the string and the horizontal decreasing when 100 ft of string have been let out?

asked by need help on December 16, 2011
72. ## Physics

A 170 pound man has to slide down a rope that can only support 150 pounds. How long will it take him to reach the ground 35 feet below if he keeps the rope from breaking?

asked by Talia on November 16, 2012
73. ## geometry

Emma has 26 feet of fence. She wants to make the largest rectangular area possible for her rabbits to play in. What length should she make each side of the rabbit pen?

asked by Jeremy on November 17, 2010
74. ## pre calc

the longest side of a triangle is 34 feet. the measures of two angles of the triangle are 40 and 65 degrees. find the lengths of the other two sides using law of sines and cosines

asked by g on April 28, 2011
75. ## Math

while training for cross country, Janay ran every day after school Monday through Thursday. Each run was 1.2 miles long. How many feet did she run?

asked by Charlene on February 2, 2016
76. ## math

a refrigerator is 3 ft wide, 2.5ft deep,and 6ft high. The walls and other parts other refrigerator take up to 20ft. How much cubic feet are left for food?

asked by justin on March 2, 2011
77. ## physics

Suppose that the coefficient of friction between your feet and the floor, while wearing socks, is 0.250. Knowing this, you decide to get a running start and then slide across the floor.

asked by Luke on October 13, 2011
78. ## math

The equation below models the height in feet, h, of a softball t seconds after it is hit by a batter. mc023-1.jpg Why is the height of the ball a function of time?

asked by marquan on June 21, 2016
79. ## college algebra

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)

asked by k on March 23, 2013
80. ## yeah

a farmer wants to fence in three sides of a rectangular field with 1,000 feet of fencing. the other side of the rectangle will be a river. find the dimensions of the field.

asked by judy on December 1, 2012
81. ## physics

A severe thunderstorm dumped 2.9 in. of rain in 30 min on a town of area 32 km2. What volume of water, in acre-feet, fell on the town?

asked by Anonymous on February 3, 2011
82. ## math

A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help

asked by Maram on April 19, 2011
83. ## college algebra

A roll of 640 feet of chicken wire is used to enclose a rectangular vegetable garden.Express the area A of the garden in terms of its length (x)

asked by k on March 23, 2013
84. ## math/algebra

Find the hang time for a golf ball hit 150 feet into the air. The time T in seconds is given by the function T(x)= square root of x over 2

asked by april on June 23, 2016
85. ## math

Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block?

asked by shh on November 5, 2012
86. ## algebra 1

A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help

asked by Maram on April 19, 2011
87. ## Math

A company charges \$42 per cubic yard of concrete. How much will it cost to pour a sidewalk that is 45 inches wide, 70 feet long, and 4 inches deep?

asked by Rosie on May 22, 2012

Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block?

asked by Anonymous on October 30, 2012
89. ## physics

a rocket launched off a cliff is represented by the equation h(t)= -16t^2+100t+140. when will this rocket reach 200 feet? I tried to factor it, i'm confused.

asked by angel on October 4, 2015
90. ## Math

An alien rocketship is traveling at a speed of 2,500,000 feet per minute. At this speed, how many miles will it travel in 1 second? Round to the nearest thousandth.

asked by Harry on February 20, 2012
91. ## Math

The inside edge of a racing track is shaped like a circle with a diameter of 420 feet. About how many times would a runner have to go around the track to run one mile?

asked by Anonymous on March 15, 2011
92. ## precal college

a rocket is shot straight up into the air with an inicial velocity of 250 ft per second and from a height of 100 feet above the ground. h= -16x2+ 250x+ 100

asked by Anonymous on September 5, 2012
93. ## math

t(seconds) 0 1 2 3 4 5 s(feet) 0 10 32 70 119 178 Find the average velocity for the time period beginning when t=2 and lasting 1.3s Estimate the instantaneous velocity when t=2

asked by Helen on October 27, 2012
94. ## Math

4 people share 7 feet of ribbon equally. How much will each get.(write a division expression that matches the situation). I said (7 divided by 4), my sister disagreed . She says it is 4 divided by 7

asked by Me on April 3, 2016
95. ## math

Suzanne wants to put a fence around her square garden. If the garden covers an area of 100 ft2, how many feet of fencing does she need? (1 point) 20 ft 40 ft 10 ft 400 ft

asked by zuha on April 2, 2014
96. ## Calculus

600 feet of fencing to enclose a rectangular plot If I don't fence one side what is the length and width of the plot that maximized the area?

asked by Anonymous on November 25, 2013
97. ## Geometry

a Farmer want to put up a fence with a total perimeter of 250 ft. It is the shape of a rectangle but there is a river on one side. What is the maximum area of feet that the fence can be?

asked by bobby on January 11, 2011
98. ## Algebra

Suppose you hit a fly ball with an initial upward velocity of 20 feet per second. Which of the following equations would be a realistic model for the height of the ball after t seconds?

asked by Emma on July 24, 2014
99. ## college algebra

An advertising company orders a poster that is 342 square feet. If its length is 1 foot greater than its width, find the dimensions of the poster.

asked by Anonymous on September 16, 2014
100. ## Math

A laffer leaning against a house maes an angle of 60 degress with the ground. The foot of the leadder is 7 feet from the foundation of the house. How long is the ladder? Please help.

asked by ashely on April 18, 2011