9C5 = 9!/[5!(9-5)!
9C5 = 9!/(5!)(4!)
You finish.
7P4 = 7!/(7-4)!
7P4 = 7!/3!
You finish.
Use the sine function here.
x
--- = sin 20 degrees = 0.349, so x = 10(0.349) = 3.42
10
It would be the fourth answer -6(2)=-13 I think
Answer: <u>49.4</u>, or <u>49 and 2/5</u>
Brainliest?