Using polar coordinates, evaluate the integral which gives the area which lies in the first quadrant between the circles x2+y2=100
and x2−10x+y2=0

-81 -56 -27 0 81

step-by-step explanation:

answer is because 4×10=40

and 98×4= is 392

40,392

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