Monday
November 24, 2014

Posts by Nate


Total # Posts: 191

algebra
A veterinarian uses 300 feet of chain-link fencing to enclose a rectangular region and also to subdivide the region into two smaller rectangular regions by placing a fence parallel to one of the sides, (a) Write the width w as a function of the length l. w = 1 (b) Write the ...
November 4, 2014

algebra
The sum of the length l and the width w of a rectangular area is 220 meters. (a) Write w as a function of l. w = (b) Write the area A as a function of l. A = (c) Find the dimensions that produce the greatest area. l = w =
November 4, 2014

algera
The fuel efficiency for a certain midsize car is given by E(v) = −0.018v^2 + 1.440v + 3.9 where E(v)is the fuel efficiency in miles per gallon for a car traveling v miles per hour. (a) What speed will yield the maximum fuel efficiency? Round to the nearest mile per hour...
November 4, 2014

algebra
The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 240 feet is a function of time in seconds given by h(t) = −16t^2 + 32t + 240. (a) Find the maximum height of the projectile. ______ ft (b) Find the time t when the ...
November 4, 2014

algebra
The height in feet of a projectile with an initial velocity of 32 feet per second and an initial height of 240 feet is a function of time in seconds given by h(t) = −16t^2 + 32t + 240.
November 4, 2014

algebra
A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln is shown for various times (in minutes) in the following table. Time(min) Temperature (F) 15 2200...
October 23, 2014

algebra
The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. Temperature, °F af 40 760 60 ...
October 23, 2014

algebra
The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. Temperature, °F af 40 760 60 ...
October 22, 2014

physics
A construction worker is carrying a load of 40 kilograms over his head and is walking at a constant velocity. If he travels a distance of 50 meters, how much work is being done?
October 8, 2014

algebra
x2 = −x + 1
September 14, 2014

algebra
(z − 1)^2 + 4 = 0
September 14, 2014

algebra
A company has determined that the profit, in dollars, it can expect from the manufacture and sale of tennis racquets is given by P = −0.01x^2 + 130x − 180,000. How many racquets should the company manufacture and sell to earn a profit of $174,900? (Enter your ...
September 14, 2014

algebra
A model rocket is launched upward with an initial velocity of 200 feet per second. The height, in feet, of the rocket t seconds after the launch is given by h = −16t2 + 200t. How many seconds after the launch will the rocket be 380 feet above the ground? Round to the ...
September 14, 2014

math
solve v=1/3TTr2h; h
September 11, 2014

math
A motorboat left a harbor and traveled to an island at an average rate of 11 knots. The average speed on the return trip was 10 knots. If the total trip took 4.2 hours, how far is the harbor from the island
September 11, 2014

math
How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution
September 11, 2014

math
Write an equation of a line in standard form with a slope of -8 and passing through the point (-10, 2).
May 6, 2014

Calculus
A rocket fired straight in the air is being tracked by a radar station 3 miles from the launching pad. If the rocket is travelling at 2 miles per second, how fast is the distance between the rocket and the tracking station changing at the moment when the rocket is 4 miles in ...
April 9, 2014

education
I beleive the answer is, B!
March 25, 2014

education
Teacher observations are vital to the promotion and maintenance of children's health status because: A. they provide a baseline of typical behavior and appearance of each child. B. teachers have primary responsibility for children's health care while they are attending...
March 25, 2014

Statistic
should be 3/10
March 14, 2014

Physics
Pi = Initial Pressure (Atmospheres) Pf = Final pressure (Atmospheres) V = Volume n = Moles R = That constant number Ti = Initial Temperature (Kelvins) Tf = Final Temperature (Kelvins) Use the Ideal Gas law. PiV=nRTi & PfV=nRTf ----In the problem, half the gas is removes, so ...
November 30, 2013

Calculus
Consider the function f(x) whose second derivative is f''(x)=5x+2sin(x). If f(0)=3 and f'(0)=3, what is f(3)?
November 19, 2013

Calculus
A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus, the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 25 ft, find the dimensions of the window so that the greatest possible amount of light is ...
November 18, 2013

Math
4m
November 17, 2013

Calculus
Answer the following questions for the function f(x)=(x^3-9x^2+27x-27)/(x^2-6x+8) defined on the interval [-14, 22]. Enter points, such as inflection points in ascending order. A. The function f(x) has vertical asymptotes at _______ and ________. B. f(x) is concave down on the...
November 5, 2013

Chemistry
How many grams of phosgenite can be obtained from 14.0 g of PbO and 14.0 g of NaCl in the presence of excess water and carbon dioxide?
November 4, 2013

Calculus
Find the absolute maximum and absolute minimum values of the function f(x)=x^3+6x^2-63x+4 on each of the indicated variables. Enter DNE for does not exist. (A) Interval = [-8,0] Absolute maximum = Absolute minimum = (B) Interval = [-5,4] Absolute maximum = Absolute minimum = (...
October 29, 2013

Calculus
List the critical numbers of the following function in increasing order. Enter N in any blank that you don't need to use. f(x) = (6x+6)/(5x^2+5x+5)
October 28, 2013

Chemistry
An 80.0 g sample of a gas was heated from 25 degree C to 225 degree C. During this process, 346 J of work was done by the system and its internal energy increased by 7495 J. What is the specific heat of the gas? J/(g∗C)
October 22, 2013

Chemistry
In a constant-pressure calorimeter, 65.0 mL of 0.330 M Ba(OH)2 was added to 65.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 23.85 °C to 28.35 °C. If the solution has the same density and specific heat as water, what is ΔH ...
October 22, 2013

Calculus
Use continuity to evaluate. as x approaches 2, lim arctan((2x^2-8)/(3x^2-6x))
October 22, 2013

Calculus
y = tan^-1(sqrt(5x^2-1)) find dy/dx
October 21, 2013

Calculus
Suppose f(x) = 3x + 4. What is f^-1(x) and what is (f^-1)'(x).
October 14, 2013

Calculus
Find the derivative of the function y, below. It may be to your advantage to simplify before differentiating. y = 8x(ln(x)+ln(2))-4x+pi
October 14, 2013

Calculus
The radius of a circular disk is given as 24 cm with a maximal error in measurement of .2 cm. What is the percentage error?
October 10, 2013

Calculus
The linear approximation to (1/sqrt(9-x)) at x=0. What is y?
October 10, 2013

Math
Find the pattern 0.8, 0.4, 0.2, 0.1, ?
October 2, 2013

Math
-(5) to the 2nd power
September 19, 2013

chemistry
what is the density of an object with a mass of 125g and a volume of 176ml?
September 17, 2013

chemistry
what is the density of an object with a mass of 125g and a volume of 176ml?
September 17, 2013

math
the temperature is -10 degrees outside. The temperature inside is 72 degrees. what is the difference between the two temperatures?
September 5, 2013

math
(-0.9)(-0.64)
September 5, 2013

math
0.05 + -4.74
September 5, 2013

Phyiscs
A 40,000 kg jet has a force of 3.9×10^3 newtons. what is the acceleration of the jet
April 3, 2013

Physics
in a childrens soccer game, one of the children kicks the ball from the ground, giving it an itial velocity of 22m/s a) what height and range does the ball reach? b) How high is the ball 2.25s into flight?
March 24, 2013

Physics
in a childrens soccer game, one of the children kicks the ball from the ground, giving it an itial velocity of 22m/s a) what height and range does the ball reach? b) How high is the ball 2.25s into flight?
March 24, 2013

Algebra
What does / Equal in a formula? Such as 2A/3 =8+4A
March 21, 2013

Physics
same and yea he does this is nuts
March 16, 2013

calculus
If that is the case, Damon, wouldn't the answer just be 1?
March 9, 2013

probability
choose a number 1 to 100. What is the probability that the number is not a multiple of 5?
March 8, 2013

Algebra
In a Quadratic function if -b=-2 and 2a=2/3 do you eliminate the two and x equals negative three or... What would x end up being?
February 25, 2013

6 grade Math
Should it be 1 1/2
January 23, 2013

6 grade Math
How do I divide this ... 3 divided by 1/2
January 23, 2013

spanish
Preparamos because the subject, Sarits y yo, is plural and includes yo. This means that the nosotros conjugation of the verb is needed. Preparan is ellos or ustedes.
January 4, 2013

Calculus
Find the limit lim x->2 (2x^2 +1)/(x^2 + 6x -4)
November 30, 2012

chemistry
Use Avogadro's number 6.022 X 10^23.
October 9, 2012

physics
A 0.73 kg ball is thrown straight up with an initial velocity of 2.50 m/s. Taking the potential energy of gravity to be zero at the height from which the ball is thrown, determine its gravitational potential energy at the balls highest point. Ignore air resistance.
October 5, 2012

physics
You are planning to build a log cabin in northern Minnesota. You will pull the logs up a long, smooth hill to the building site by means of a rope attached to a winch. You need to buy a rope for this purpose, so you need to know how strong the rope must be. Stronger ropes cost...
September 27, 2012

physics
You are part of a team to help design the atrium of a new building. Your boss, the manager of the project, wants to suspend a 16.0 kg sculpture high over the room by hanging it from the ceiling using thin, clear fishing line (string) so that it will be difficult to see how the...
September 27, 2012

phsycis
A tight-rope walker walks across a 30.0 m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is half-way across. If the tension in both halves of the wire at this point is 3675 N, what is the mass of the tight-rope walker...
September 20, 2012

phsyics
To move a large crate across a rough floor, you push on it with a force F at an angle of 21¨¬ below the horizontal. The mass of the crate is 31 kg, ¥ìs is 0.57, and ¥ìk is 0.45. Find the force necessary to start the crate moving
September 19, 2012

Math
If you had a new business and you had 30 customers the first week and 55 customers the second week and 80 customers the third week, what would you project for week 4? Explain how you arrived at your answer.
September 14, 2012

physics
The engine of a 1250 kg car provides a forward directed force of 3,560 N. If the car accelerates at a rate of 2.60 m/s2, what is the total resistive force (wind resistance, friction, etc.) acting on the car?
September 13, 2012

Math
What is a shortcut for finding the sum of all numbers from 1-99?
September 11, 2012

physics
The eye of a hurricane passes over Grand Bahama Island in a direction 60.0° north of west with a speed of 36.1 km/h. Three hours later, the course of the hurricane suddenly shifts due north, and its speed slows to 26.9 km/h. How far (in km) from Grand Bahama is the ...
September 9, 2012

physics
A gray kangaroo can bound across a flat stretch of ground with each jump carrying it 9.3 m from the takeoff point. If the kangaroo leaves the ground at a 17.6 degree angle, what is its takeoff speed?
September 8, 2012

Physics
You push your couch a distance of 3.6 m across the living room floor with a horizontal force of 198.0 N. The force of friction is 151.0 N. What is the work done by you, by the friction force, by gravity, and by the net force?
May 27, 2012

Physics
A car of mass m = 1450 kg is traveling at a speed of v0 = 79 km/h (21.9 m/s). Calculate the work that must be done by the brakes to completely stop the car in kJ
May 27, 2012

Physics
That's what I figured but I wasn't sure because it talks about the negative side of the x-axis. However, looking at the question again, a) is the only answer that makes sense. Thank you.
May 23, 2012

Physics
1. A particle moved from point A to point B on the x-axis and had a positive displacement. Which one of the following is true? a. particle moved in the positive direction but it is on the negative side of the x-axis b. particle moved in the negative direction but it is on the ...
May 23, 2012

Physics
1. A particle moved from point A to point B on the x-axis and had a positive displacement. Which one of the following is true? a. particle moved in the positive direction but it is on the negative side of the x-axis b. particle moved in the negative direction but it is on the ...
May 23, 2012

Biomaterials
What is the theoretical density of tantalum (Ta) with the following characteristics: Crystal structure:     BCC Atomic radius:         14.6 Angstroms Atomic weight:        180.9 g/...
May 22, 2012

physics
An outfielder throws a baseball with an initial speed of 30 m/s at an angle of 13° to the horizontal. The ball leaves his hand from a height of 1.75 m. How long is the ball in the air before it hits the ground?
May 21, 2012

Mathematical Reasoning
Just the floor and thanks Steve
April 4, 2012

Mathematical Reasoning
the circumference is 29.5 inches
April 4, 2012

Mathematical Reasoning
How many Men size basketballs fit into a 25' by 25' room?
April 4, 2012

physics
This problem was done wrong. same equation but the answer was solved incorrectly. Your solving for v2. so 72 should be divided by the 208 not the other way around. The answer should be less the 1. around 0.346.
March 27, 2012

Math
Suppose you invest $8000 at a nominal interest rate of 5.75% for 5 years. Find the accumulated amount if your account is accumulated yearly.
March 20, 2012

Living ENvironment
HOW do you know if it is snthesis or hydrolosis
February 16, 2012

Living ENvironment
can you give me a picture lock and key diagrams. I need to make my own lock and key diagram. I dont know the difference between synthesis and hydrolosis so can you give me some pictures and label them if they are hydrolosis or synthesis.
February 16, 2012

math
How do I figure the degree of measure from 18-24 people = 11%
February 15, 2012

Physical Chemistry
A mole of air (80% Nitrogen, and 20% Oxygen by volume) at 298.15K is brought into contact with liquid water which has a vapor pressure of 3168Pa at this temperature. a) what is the volume of the dry air if the pressure is 1 bar? b) what is the final volume of the air saturated...
February 6, 2012

chemistry
How many grams of magnesium metal are produced by the decomposition of 19 grams of magnesium chloride?
February 6, 2012

Math
Show why the below equation is true using the areas of rectangles: 2p+5p=(2+5)p 3(4-1)=3x4-3x1
January 30, 2012

Reading
What's a description of Nicholas II and his Family that would go with the story Animal Farm?
January 25, 2012

math (geometry)
If p∨q is true, then what must be true about the truth values of p and q?
January 15, 2012

Question
Newport News is in VA dude
December 20, 2011

calculus
If a snowball melts so that its surface area decreases at a rate of 3 cm2/min, find the rate at which the diameter decreases when the diameter is 9 cm. (Give your answer correct to 4 decimal places.)
November 29, 2011

calculus
The force F (in Newtons) required to move a box of mass m kg in motion by pulling on an attached rope is F(x) = f m g/(cos(x))+ f (sin(x)) where x is the angle between the rope and the horizontal, f is the coefficient of static friction and g = 9.8 m/s^2. Find the angle x that...
November 14, 2011

calc
Use the Mean Value Theorem to show: -x < sinx < x for all x > 0 (and where I have the inequalities, it's supposed to be less than or equal to for the first two and greater than or equal to for the last one, I just didn't know how to type it)
November 3, 2011

Intermediate Algebra
Find the x- y-intercepts and graph the function f(x)=5x-10
October 18, 2011

Chemistry
Alkali metals are so reactive that they react directly with water in the absence of acid. For Example... 2 K(s) + 2 H2O(l) ¨ 2 K+(aq) + 2 OH− (aq) + H2(g). How many milliliters of hydrogen will be evolved over water when 4.52 g K reacts with an excess of. H2O (l)?
October 12, 2011

U.S HISTORY
What are two reasons the French felt threatened by British interest in the Ohio River Valley?
September 28, 2011

Languge arts
Who are the major characters in the book MAUS?
April 11, 2011

MathHelp
a to the 9 power b to the 3 power / a to the 7 power b to the 8 power.( a^8b^8/ a^7b^8)
April 3, 2011

Trig
A Person is riding a bike with wheels that have a 14 inch radius at 15 mph. The bicyclist rides over some gum which sticks in the tire, assume this is t=0. 1. Find a function that gives the height in inches above the ground of the gum, with input is second
March 30, 2011

math
thank you!
March 7, 2011

4th grade math
does it have anything to do with division FIND the Mean: 11, 18, 13, 14. help please!
March 7, 2011

math
Find the mean of 11, 18, 13, 14. how do i go about it?
March 7, 2011

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