Evaluating the expression 11C3 is very simple to do.
If you are assuming that C is the notation for the combination.
11!
11C3= ____
3!(11-3)!
Answer:66
Step-by-step explanation:
Y=mx+b
10=-4*12+b
10=-48+b
b=58
r=-4(-2)+58
r=66
Answer:
$14.4
Step-by-step explanation:
20%= .2
$18 x .2 = $3.60
$18 - $3.6 = $14.4
Let the number be xy ,
xy = 10x + y. when reversed = yx = 10y + x
x = 2y ........(a)
10x + y + 10y + x = 66.........(b)
10(2y) + y + 10y + 2y = 66
20y + y + 10y + 2y = 66
33y = 66
y = 66/33
y = 2
x = 2y = 2*2 = 4
Recall the original number is xy = 42.
Answer:
Step-by-step explanation:
9-4(x-y)=2x+6
9 - 4x + 4y = 2x + 6
9 + 4y = 6x + 6
4y = 6x - 3
y = 3x/2 - 3/4