An example of a linear equation with three variables, x, y, and z, is given by: ax + by + cz + d = 0, where a, b, c, and d are constants and a, b, and c are non-zero. Linear equations occur frequently in most subareas of mathematics and especially in applied mathematics.
One study has shown that tea tree oil is more active against the organisms associated with transient carriage than against commensal skin flora and thus may be useful in eliminating the transient flora while suppressing but maintaining commensal flora. 21 The rapid kill rate of Clone 88 compared with standard tea tree oil shown for most of the organisms tested in the present study is encouraging and suggests that further clinical studies should be carried out.
1 Tea tree oil can be used to treat symptoms of athleteâs foot, but it is usually not effective as a cure. 2  It may be more effective at treating toe web athleteâs foot than other types. 3  You can look for a cream with the proper concentration, or mix 1-2 parts 100% pure tea tree oil with 2 parts ethanol alcohol.ou need at least 25-50% to cure the fungus, and even then it may not work as well as other over-the-counter anti-fungal medications. 1  Tea tree oil can be used to treat symptoms of athleteâs foot, but it is usually not effective as a cure.