The answer is and 3/4 because 3/4 of an hour is 45 minutes
Answer:
₂₁C₉ = 293930
Step-by-step explanation:
9 members out of 21 senators will be selected on the subcommittee on Economy Policy
So we are in case of combinations of 21 people in groups of 9
₂₁C₉ =21! /( (21-9)!) *9! ⇒21*20*19*18*17*16+15*14*13*12! /(21-9)! *9!
=21*20*19*18*17*16*15*14*13/ 9! ⇒ = 19*2*17*15*14*13/6 ⇒ =293930
Answer:
254.47
Step-by-step explanation:
Area= r²π
A= 9²π
A= 81π
A= 524.47
<u>NB</u>: this is a pi sign (π)
no, it's not a square root that we need to identify
