Abag contains eight marbles of equal size and weight. one marble is red, two marbles are white, and five marbles are blue. a marble is taken from the bag two times. each time a marble is taken out, it is not replaced. what is the probability of picking a blue marble both times?

There are 5 blue marbles out of 8.

The first pick would be 5/8

After picking the first marble, there would be 4 blue and 7 marbles.

The second pick would be 4/7.

Picking blue both times would be 5/8 x 4/7 =  5/14

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