Find the solution t the differential equation dz/dt = 2te^z that passes through the origin. My answer is -In (1-t^2), but my answer is populating as incorrect. Can someone help please?
November 20, 2015
Solve the initial value problem 2y" + 5y' - 3y = 0 y(0) =7, y'(0) = 7 Can someone please help. The answer I came up with is 35 exp(-x) - 28 exp(-3x/2), but my answer is wrong.
November 20, 2015
Can someone please help me with this problem? A 200-1b block rests on a horizontal plane. Find the magnitude of the force P required to give the block an acceleration of 10 ft/s2 to the right. The coefficient of friction between the block and the plane is 0.25.
November 8, 2015
In order to qualify for the finals in a racing event, a race car must achieve an average speed of 230 km/h on a track with a total length of 1810 m. If a particular car covers the first half of the track at an average speed of 245 km/h, what minimum average speed must it have ...
September 22, 2014
a drinks machine dispenses coffee into cups. A sign on the machine indicates that each cup contains 50 ml of coffee. the machine actually dispenses a mean amount of 55ml per cup and 10% of the cups contain less than the amount stated on the sign. assuming that the amount of ...
April 18, 2014
Consider the standard normal distribution. Find the area for the z-score -0.75. Draw a picture of this distribution showing the location of the z-score and the mean. Shade the region corresponding to the area found for the z-score.
March 8, 2014
topic: Negative impact of teenagers usage on Facebook. Need to write a paragraph on this topic don't know what to say or how to start. Must have an introduction with a thesis statement.
February 14, 2013
Men in Black II grossed $19,821,658 on 3557 screens on the opening Friday. If theaters are open from noon to midnight, have 15 minutes in between showings, and average $6 a ticket for the 82 minute movie, find the average number of people who attended each showing.
September 16, 2012
You are considering starting a walk-in clinic. Your financial projections for the first year of operations are as follow: Revenues (10,000 visit) $400,000 Wages and benefits $220,000 Rent $5,000 Depreciation $30,000 Utilities $2,500 Medical supplies $50,000 Administrative ...
July 21, 2012
A study in Orlando, Florida claimed that the mean commute time for all employees working at Disney exceeds 40 minutes. This figure is higher than what was assumed in the past. The plan is to test this claim at a level of significance = 0.05 and a sample size = 100 commuters. ...
April 27, 2012
Write all of the following statement(s) that apply to the following polynomial: -5x3 + 2x2 7 It is a binomial. It cannot be evaluated at x = It has a degree of 3. It is cubic.
February 19, 2012
. As a part of their customer-service program, United Airlines wanted to select 10 passengers from today's 9 A.M. Chicago-Tampa flight to be interviewed regarding airport facilities, service, and amenities in the waiting area. Each passenger was given a number on check in...
November 14, 2011
=0.2311 (B) p(x is at most 4)=P (x,=4)=p(0)+p(1)+p(2)+p(3)+p(4) =c(12,0)(0.30)^0(1-0.30)^2(12-0)+c(12,1)(0.30)^1(1-0.30)^(12-1) +c(12,2)(0.30)^2(1-0.30)^(12-2)+c(12,3)(0.30)^3(1-0.30)^(12-3)+c(12,4)(0.30)^4(1-0.30)^(12-4) (C) u=np=12*0.3=3.6 12*0.3*0.7=2.52 (2.52)=1.5875 to ...
November 11, 2011
an adult exerts a force of 26n to pull a child across the snow on a sled. The rope joins the sled at an angle of 30 degrees above the horizontal. Ignoring friction, how much work is done in pulling the sled 390m?
October 25, 2011
Determine the approximate percentage appreciation or depreciation of the NASDAQ Composite, Dow Jones Industrial Average, and the S&P 500 for the last 12 months and provide these figures. In addition to showing the percentage change of each index for the last 12 months, also ...
May 17, 2011
The end of a thin glass-wall tube with an inside diameter of 1-mm is inserted into a reservoir of pure water with a temperature of 25 degree C. What is the surface tension (adhesoin) force on the water inside the tube? To what height will the water rise in the tube?
March 17, 2011
have you ever used mnemonics to remember something complicated? if so, describe the techniques you have used. what ways might you use mnemonics to be more effective college student and adult learner.
July 15, 2010
assume that a set of test score is normally distrubuted with a meanof 100 and a standard deviation of 20 find the quantities using the 68-95-99.7 rule to get: the percentage of scores less than 100: B) relative frequency of scores less than 120 c) percentage ofless than 140, D...
June 7, 2010
What social, political, and economic changes pulled the North and South secession? What was the final determining factor that led to Southern secession?What social and economic changes discussed in previous chapters fueled sectional conflict?
November 18, 2009
Use the information in the Gutiérrez Map to answer the following questions: How and where are Native Americans presented on this map? How might have the maps indication of where Native Americans lived strengthened European claims of sovereignty? ...
October 2, 2009
What are the fundamental differences between Western philosophies and Native North American ways of knowing? How does each culture generally view the world and education? How can you incorporate seemingly different ways of knowing into your curriculum?
August 25, 2009
2. The time (in number of days) until maturity of a certain variety of hot pepper is normally distributed, with mean m and standard deviation s = 2.4. This variety is advertised as taking 70 days to mature. I wish to test the hypotheses H0: m = 70, Ha: m > 70, so I select a...
November 30, 2008
1. A certain population follows a normal distribution, with mean m and standard deviation s = 2.5. You collect data and test the hypotheses H0: m = 1, Ha: m 1. You obtain a P-value of 0.022. Which of the following is true? Why? a. A 95% confidence interval for m will include ...
November 29, 2008
Explain how the concepts of scarcity, choice and opportunity cost are related to the spending priorities of state government and can be illustrated by these two main areas: road construction and school classroom construction. With spending of only 300 million and 600 million a...
June 11, 2008
the inverse cosine of negative 0.947 Put it in your calculator... The sequence of keys in my old ten dollar calculator is .947 +- 2nd COS Other calculators have different keys strokes. If you want to be neat, type this into a google search window: arccos(-.947) in degrees
November 3, 2006