In a regular polygon, the measure of an interior angle is 156º. How many sides does the polygon have?

15 sides

Step-by-step explanation: To find the number of sides, you need to find the exterior angle and divide it by 360. Since the interior is 156, do 180-156 and get 24. You then do 360/24, and you get 15, hope this helped!

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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