A gear in a machine makes 49 revolutions per hour. About how many revolutions does the gear make in 5 days?
Create an expression to model the given situation. Then, use estimation strategies to find approximately how many revolutions the
gear makes in 5 days.
1,200
5,000
24
60
50
10
40
6,000
x 12 x 49
$ 120

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.

idk

step-by-step explanation:

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.