The mathematical model for learning an assembly-line procedure needed for assembling one component of a manufactured item is where P is the proportion of correctly assembled components after n practice sessions. How many practice sessions are required to have at least 65% of the components correctly assembled within the given time period

554.4

step-by-step explanation:

44*12.6=544.4

h/o/e/s mad

step-by-step explanation:

si si si

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.