Question
Two numbers have a product of 3 and 1/5 and a sum of 3 and 3/5 what are the numbers
Answers
Damon
x y = 3.2 so y = 3.2/x
x + y = 3.6
x + 3.2/x = 3.6
x^2 - 3.6 x + 3.2 = 0
x = [ 3.6 +/- sqrt (12.96 - 12.8) ]/2
x = [ 3.6 +/- .4 ] /2
use the positive root
x = 2
y = 1.6
x + y = 3.6
x + 3.2/x = 3.6
x^2 - 3.6 x + 3.2 = 0
x = [ 3.6 +/- sqrt (12.96 - 12.8) ]/2
x = [ 3.6 +/- .4 ] /2
use the positive root
x = 2
y = 1.6