Solve the inequality: −8x−9≥−5

x≥-.5

Step-by-step explanation:

Addition; add -9 to both sides:

-8x≥4

Divide; both sides by -8 to isolate x:

x≥-.5

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1,407.5 hours

step-by-step explanation:

we first convert all the time to hours and then sum them up.

there are 24 hours in 1 day, in 58 days, there are 24 x 58 = 1,392 hours.

there are 60 minutes in 1 hour, thus, 30 minutes will be equivalent to 30 / 60 = 0.5 hours.

therefore, the number of hours it will take mercury to complete a full rotation is 1,392 + 15 + 0.5 = 1,407.5 hours