Respuesta :
Answer:
Estimated: 6000 revolutions
Actual: 5880 revolutions
Step-by-step explanation: (Estimation)
First, we should round 49 to 50.
Next, we should convert 5 days to hours to match the per hour rule.
5 days --> 120 hours
Then, multiply 120 by 50 to get 6000 or you can take out the 0 in 120 so it might be easier for you.
(Acutal)
First, Convert 5 days to 120 hours to match the per hour rule.
Next, multiply 120 by 49 to get 5880 or take out the 0 in 120 to make it easier for you.
Answer:
24, 10, 50, 6,000 (They are in order)
Step-by-step explanation:
It is given that the gear makes 49 revolutions per hour. So, to determine an expression to represent the number of revolutions a gear makes in 5 days, multiply the product of 5 days and 49 revolutions by 24 hours per day.
Next, use the associative property to create an equivalent expression. So, 24 is equivalent to the product of 2 and 12, and the product of 5 and 2 is 10.
In the third step, multiply 10 and 12, and estimate 49 as 50.
Finally, multiply 120 by 50.
The following shows a correct method to find the approximate number of revolutions the gear makes in 5 days.
So, the gear makes approximately 6,000 revolutions in 5 days.
