A certain industrial process is brought down for recalibration whenever the quality of the item produced falls below specifications. Let X represents the number of times the process is recalibrated during a week, and assume that X has the following probability mass function. Random Variable (X = x) 0 1 2 3 4f(x) 0.31 0.29 0.22 0.13 0.05a. Calculate the mathematical expectation E(X).b. Calculate the variance σ^2.c. Calculate the Standard deviation σ.

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

560

hope this : )

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation: