To evaluate the combination we proceed as follows:
21C3
Given nCk we shall have:
n!/[(n-k)!k!]
thus plugging the values in the expression we get:
21!/[(21-3)!3!]
=21!/(18!×3!)
=1330
Answer: 1330
Answer:
53 feet
Step-by-step explanation:
if you start with 62 feet and add 39 feet because he went down 62+39 you get 101 then if you subtract 48 because he went up, 101-48 you get 53 feet
Answer:
y+4 = -1/6(x-9) point slope
y = -1/6x -2.5 slope intercept
Step-by-step explanation:
The point slope form is
y-y1 = m(x-x1)
where m is the slope and (x1,y1) is the point
y- -4 = -1/6(x-9)
y+4 = -1/6(x-9)
Distribute to get to slope intercept form
y+4 = -1/6x +9/6
y+4 = -1/6x +3/2
Subtract 4 from each side
y+4-4 = -1/6x +3/2 -4
y = -1/6x +3/2 -8/2
y = -1/6x -5/2
y = -1/6x -2.5
In fraction form it is 6/5, if you want it in decimal it is 1.2 and if you want it in a mixed number form it will be 1 1/5.
Work= 2-8/ -5
Hope this helps.
