Cho x, y,z thõa mãn xy+yz+zx=1 tìm gtnn của biểu thức x^4+y^4+z^4

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

c-   36

taxicab circle radius 9 has 4(9) = 36 points

8.3 and the 3 is repeating

hope this .