15. Given that a = 1/2 and b = 1/3,what is the value of
1/2(1/a+1/b)
A.3/5
B.5/6
c.5/2
D. 3
E. 5

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░░░▌░▄▄▄▐▌▀▀▀░░ This is Bob

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Step-by-step explanation:

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

explanation:

step-by-step explanation: