HURR!! Which of the following is a proportion?
3/4 = 9/19
6/9 = 3/5
4/5 = 2/10
3/7 = 6/14

3/7 = 6/14

Step-by-step explanation:

if u multiplied 3 times 2 you get 6 and that's on the other side. same for 7

i believe the answer is d.

hope it you! : d

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