Prove that sec-Sin^2a - sin^2a/
2 cos^4a-cos^2a= 1

x intercept = (-1,0)   (4,0)

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

step-by-step explanation:

10 b/c 5*2 =10

step-by-step explanation: