Mathematics Homework Solutions

Stiffness Matrix

Please see attached file. How do i equate the mass spring system?

Determining the probability from the given situation with venn diagrams.

The records of Midwestern University show that in one semester, 38% of the students failed mathematics, 27% of the students failed physics, and 9% of the students failed mathematics and physics. A student is selected at random. a.) If a student failed physics, what is the probability that he or she failed mathematics? b.) ...continues

Graphical methods

Use graphical methods to solve the linear programming problems.. Find values of x 0 and y 0 that maximize z = 10x + 12y subject to each of the following sets of constraints. See attachment

Finite Math - Probability

If the probability that a women is rich is 0.4, the probability that she is beautiful is 0.3 and the probability that she is either rich or beautiful is 0.5, what is the probability that she is both rich AND beautiful? Please show "all" steps to solution. Thank you,

Finite Math - Sets Counting Techniques

The problem I am working is the following; please provide step-by-step to obtain solution's. I am unable to figure (c) out the ANSWER IS ... 7805 There are 5 rotten plums in a crate of 25 plums, How many samples of 4 of the 25 plums contain at least one rotten plum?

Finite Math - Probability

Need assistance with following problem along with steps to arrive at solution/answer. Three envelopes are addressed for 3 secret letters written in invisible ink. A secretary randomly places each of the letters in an envelope and mails them. What is the probability that at least 1 person receives the correct letter?

Finite Math - Problem with Excel Spreadsheet Attachment

At the start of the year, a company wants to invest excess cash in one-month, three-month and six-month Certificates of Deposit (CD's). (Purchase price and yields for the different CD's appear in the table below). The company is somewhat conservative, however, and wants to make sure that it has a safety margin of cash-on-hand e ...continues

Finite Math - Problem

An experimental test to detect a particular type of cancer indicates the presence of cancer in 90% of individuals known to have this type of cancer, and in 15% of individuals known to be cancer-free (false positive). One hundred individuals volunteer to take the test. Of the 100, 60 are known to have the cancer, and 40 are known ...continues

Linear Programming (Inequalities)

Linear Operators - Simplex Method. Please see the attached problems. Thank you.

Sets

Describe set in words- B ∩ D

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