Asolution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing 9% alcohol. a. identify the unknowns to be evaluated in the above given problem. b. develop the system of simultaneous equations which represent the above problem. c. find the solution of the system of simultaneous equation you have developed in part (b), using a matrix method

Step-by-step explanation:

Given that a solution containing 12% alcohol is to be mixed with a solution containing 4% alcohol to make 20 gallons of solution containing 9% alcohol.

Let x gallons of 12% alcohol be mixed with y gallons of 4% alcohol.

Total gallons

Alcohol content in the total mixture

b) Two equations are

c) This is of the form Ax = B

where A =

Inverse is

Solution set is A inverse *B

=

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.