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Question: a. In a group of 15 people, is it possible for each person to have exactly 3 friends? Explain. (Assume that friendship is a symmetric relationship: If x is a friend of y, then y is a friend of x.)
b. In a group of 4 people, is it possible for each person to have exactly 3 friends? Why?
A regression analysis between sales
Create a plaintext message and encrypt it using a shift cipher. Copy the ciphertext onto a separate piece of paper and note the amount of the shift you used. Trade ciphertexts with a partner and decrypt the ciphertext you receive.
What is the price of gasoline per litre in Canadian dollars if a US gallon of gas costs US$3.74? One US dollar is worth C$0.9739 and one US gallon is equivalent
What is the probability that the mean interest rate in this sample is within .2 of the national average? Show all work clearly
1. graph each of the following. find the range of angles that trace out the full graph.determine and graph the
A jewelry floor safe with a square base is to be made so as to have a total volume of 648 cubic inches. The side material for the safe costs $1 per square inch.
Ram can do a piece of work in 20 days and Shyam alone can do it in 30 days. How much time will both take to finish the work ?
find the x intercept of the tangent line at x=-1
At the beginning of an experiment, a scientist has 372 grams of radioactive goo. After 105 minutes, her sample has decayed to 46.5 grams. What is the half-life of the goo in minutes?
The members of a flying club plan to share equally the cost of a $200,000 airplane. The members want to find five more people to join the club so that the cost per person will decrease by $2000. How many members are currently in the club?
The circumference of a sphere was measured to be 70.000 cm with a possible error of 0.50000 cm. Use linear approximation to estimate the maximum error in the calculated surface area.
A man in rowboat at point P, 150km from the shore, wishes to reach a point B, 600 km down shore, in the shortest amount of time. Where should he land if he can row at 4km/hr and walk at 7km/hr?
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