One report said that it rained 3 inches in two days. It actually rained 1.05 inches and 1.8 inches. How far off was the report?

.15 inches off.

Step-by-step explanation:

1.8+1.05=2.85, and 3-2.85=.15

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

the answer is  

a.

28 ft2

step-by-step explanation: