Answer:
21
Step-by-step explanation:
<em>Step 1: add 2 to 5</em>
=> 2 + 5
=> 7
<em>Step 2: Multiply the result by 3:</em>
=> 7 * 3
=> 21
Therefore the <u>final answer = 21</u>
Hope this helps!
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:
180 - 90 = 90
half of 90 = 45
40 and 50??
Step-by-step explanation: