** asap! **

mr. brown is creating examples of systems of equations. he completes the steps to find the solution of the equation below.

based on this work, what is the solution to the system?

(-4, -4)

(0, 0)

no solution

infinitely many solutions

they are simplified

step-by-step explanation:

i think it is 18

step-by-step explanation:

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