What words or symbols are used to represent positive and negative integers

Positive +

Negative -

The positive, or plus sign "+" is used to designate positive integers, while the negative, or minus sign, "-" is used to designate negative integers. There is also the absolute value sign, |x|, placing the integer in between two lines, that translates to "distance from zero". Therefore |-8| = 8

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