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A person traveling 4 hr by plane and 25 hr by ship covers 1580 miles. If the speed of the plane had been one-half of the actual speed and the speed of the ship had been one-fourth greater, the person would have traveled only 1315 miles in the same lenght of time. Find the speeds of the plane and the ship
Suppose that V and W are vector subspaces of Rn. If I define: How can I prove that V+W is also a vector subspace of Rn and ALSO how could verify that (for example)
A triangular plate with height 3 ft and a base of 4 ft is submerged vertically in water so that the top is 1 ft below the surface. Express the hydrostatic force against one side of the plate as an integral and evaluate it. (Give your answer correc..
What is the value of the coefficient of determination for this regression model? Comment on the strength of the regression line for this model.
Objective questions based on regression
Linear Combinations, Basis and Transformations, 1. Given a basis B = { u1 = [1, 2], u2 = [2, 1] } for R^2, express u = [7, -2] as a linear combination of u1 and u2. How many ways can you do this?
For how many years will the field be contaminated? (Round your answer to the nearest tenth.)
Norman window has the shape of a semicircle atop a rectangle so that the diameter of the semicircle is equal to the width of the rectangle. What is the area of the largest possible Norman window with a perimeter of 39 feet?
Write a program for the arithmetic (negation of an integer, addition, subtraction and multiplication of two integers) of integers using 3's complement representation.
Alexamara Marina Group Database: Problem 4 (p. 160): List the first and last names of all owners who have a boat in a 40-foot slip. Use the IN operator in your formulation.
A person who weighs 180 pounds on Earth weighs 30 pounds on the Moon. What is the weight of a person on the Moon who weighs 240 pounds on Earth?
Find the standard deviation of the data in the given frequency table. A company had 80 employees whose salaries are summarized in the frequency table below. Find the standard deviation.
State the research and null hypotheses to test whether or not doctors in this HMO have less experience than the national average at alpha=0.05
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