Answer:
zero
Step-by-step explanation:
1/2 feet is less than 3/4 feet, so is insufficient length for even one propeller. No propellers can be cut from the board.
Mean absolute deviation of the set is 1.6
Answer ⇒ 
Step-by-step explanation:

⇒ 
⇒ 
⇒ 
⇒ 
Answer:
<h3>2</h3>
Step-by-step explanation:
<h3><em>For</em><em> </em><em>every</em><em> </em><em>action</em><em>,</em><em> </em><em>there</em><em> </em><em>is </em><em>a</em><em>n</em><em> </em><em>equal</em><em> </em><em>and</em><em> opposite</em><em> </em><em>reaction</em><em>.</em></h3>
we are given

Firstly , we will multiply both sides by 5

now, we can simplify it


now, we can solve for n
.............Answer