Answer:
The number of different lab groups possible is 84.
Step-by-step explanation:
<u>Given</u>:
A class consists of 5 engineers and 4 non-engineers.
A lab groups of 3 are to be formed of these 9 students.
The problem can be solved using combinations.
Combinations is the number of ways to select <em>k</em> items from a group of <em>n</em> items without replacement. The order of the arrangement does not matter in combinations.
The combination of <em>k</em> items from <em>n</em> items is: 
Compute the number of different lab groups possible as follows:
The number of ways of selecting 3 students from 9 is = 

Thus, the number of different lab groups possible is 84.
Answer:
Distance traveled in one second by car=374/17=22meters
Step-by-step explanation:
Distance traveled by bus in one second=414.23=18 meters. Car travels faster.It travels 4 meter more in one second than Bus.
Answer:
<h2>8.25 miles per hour</h2><h2 />
Step-by-step explanation:
aver. speed = distance over time
where distance = 13.2 miles
time = 1.6 hours
plugin values into the formula+
speed =<u> 13.2 miles </u>
1.6 hours
= 8.25 miles per hour