Matrix Determinants, Transposes and Inverses

If A and B are 3X3 matrices with Det(a)=2 and Det(b)=3 ... if possible evaluate the following expressions 1 Det(2AB) 2 Det(A^4 B^T a^-1) Where T is transpose and -1 is INVERSE

Probability

A multichoice test in which each question has four choices, only one of which is correct. Assume that nine questions are answered by guessing randomly. What is the probability of getting exactly three correct answers.

Possible Values of a Random Variable

Assume that the box contains balls numbered from 1 through 22, and that 3 are selected. A random variable x is defined as 3 times the number of odd balls selected, plus 4 times the number of even. How many different values are possible for the random variable x?

Solving Systems of Linear Equations With Three Variables ( 3 Unknowns )

Solve the following system of linear equations: 3x + 3y + 5z = -5 x + 4y + 10z = -7 10x + 18y + 39z = -31

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Note: For detailed description of the questions, please see the attached questions file. Below is the text that represents the brief description of the actual questions. Question (1) Given, f(x) = ( x + 2 )(2x – 3) , f (– 2 ) = ? Question (2) The equation of the line through (8 , 6 ) and (2 , - 4) is ... Question (3) ...continues

Linear Programming, Equations of Lines and Word Problems

1) f(x)=3x(2x-1). f(-1)= A)7 (B)11 (C)-6 (D) 9 2) The slope of the line through the points (3,4)and (-1,7) is A)4/3 (B) ¾ (C) -3/4 (D) 7/4 3)The line 6x + 9y=8 has slope A) -2/3 (B)-6 (C) 4/3 (D) 9 4)Select the line parallel to 6x +14y =20 A) 3x-7y=15(B) 7x-3y=8 (C) y=20/6x+14 (D)y= -3/7x+11/7 5) A revenue fu ...continues

Linear Programming : Simplex Method (10 Problems)

Please see the attached file for the fully formatted problems.

Linear Programming by the Simplex Method and Input-Output Matrices ( Input/Output Matrix ) (13 Problems)

Please see the attached file for the fully formatted problems. keywords: input and output matrix

Binomial Probability

When shipping diesel engines abroad, it is common to pack 10 engines in 1 container that is then loaded on a rail car and sent to a port. Suppose that a company has received complaints from its customers that many of the engines arrive in nonworking condition. To help solve this problem, the company decides to make a spot check ...continues

Cost Accounting Multiple Choice

1) The basic types of cost accounting system are: A)Job order cost systems, activity based cost systems and process cost systems. (B) Direct cost system and indirect cost systems (C) Complete job cost systems and work in process cost system. (D) Fixed cost systems and variable cost systems 2) In ABC, only one cost driver sh ...continues