Example set-up 8.4 mm x 10-3 m = 8.4 x 10-3 m 1 mm or = 8.4 x 10-3 m 8.4 mm x 1 m 103 mm The problem can be done either way. Both are correct. Exercise: Complete the following. Set-up like the example above.

A rock is 2.3 cm. Express this length in m.

A person has a mass of 70 kg. Express this mass in g.​

step-by-step explanation:

this is not a question

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