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Discrete Mathematics
Show that the number of distinct sequences of positive integers which add up to n is exactly 2n. Note that we do not place any restrictions on the length of the sequence, just that each term is a positive integer and the total sum of all terms is n. Hint: how many choices are there for the first term in such a sequence, and once it is made, what must be true about the sum of the remaining terms? Derive a recursive formula and then prove inductively.
An ecologist wishes to mark off a circular sampling region having radius 10 meters. However the radius of the resulting region is actually a random variable R with probability density function.
verifying some important results over real valued functions.prove or disprovelet fgh be real-valued functions and let
By what percent is the enrollment increasing each year?
You are designing a rectangular poster to contain 48 in^2 of printing with a 3-in. margin at the top and bottom and a 1-in. margin at each side. What overall dimensions will minimize the amount of paper used?
question a flying wedge spaceship is a right triangle in side view. at rest the base and height which form the 90deg
Important information about Probability and Statisics. Find the probability that a randomly selected adult has an IQ between 90 and 110
The same plane can fly 540 miles when flying the same amount of time into a headwind of 20 mph. What is the speed of the plane if there is no headwind or tailwind?
Maryam pays $3000 on the 30th day of a $7,000, 120-day, and 8% loan.
The inflation rate for Britain is 6.8. Use the least squares line to estimate Britain's independence rating.
what is the hub/authority score of a node after one iteration?
Explain why a point on the boundary line cannot be used as a test point when graphing a linear inequality in two variables. Provide an example.
Prove that there exists only one 4-regular maximal planar graph. Can you explain it step by step? Draw the graph please.
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