Answer:

Step-by-step explanation:
Power (denoted by P) can be defined as a function of work (denoted by W) and time (denoted by t) using this formula:

Unit of Work = 
Unit for Time = s
Therefore, the Unit of Power


An appropriate unit for power is: 
Answer:
.79 mm^2
Step-by-step explanation:
First find the area of the circle
A = pi r^2
A = 3.14 (1) ^2
A = 3.14
Now we have 1/4 of the circle
The area is 1/4 of the full area
1/4 *3.14
.785
Rounding to the nearest hundredth
.79 mm^2
1 1/2 - 1/4
You have to have a common denominator which is 4 in this istance.
That makes it 1 2/4 - 1/4. That equals 1 3/4.
Hope that this helped! :)
Answer:
11 weeks
Step-by-step explanation:
She bought the watch for $149
And paid $50 immediately.
She has $149-$50 left, which gives $99
If she pays $9 each week,
In two weeks, she would be paid $9+$9=$18
In three weeks $9+$9+$9=$27 then it will take her 99/9 weeks to pay off the watch
99/9
It will take her $11 to pay off the watch