B is the answer hope this helps :)
Number of ways of picking a smaller number out of a bigger number is called combination.
Number of way of picking 3 stamps out of 4 is 4C3 (4 combination 3) = 4! / (3! x (4 - 3)!) = 4! / (3! x 1!) = (4 x 3 x 2 x 1) / (3 x 2 x 1 x 1) = 24 / 6 = 4 ways.
-√4 + √(-48) + √121 + √(-108)
= -√(2²) + √(-1 • 3 • 4²) + √(11²) + √(-1 • 2² • 3³)
= -2 + 4√3 i + 11 + 6√3 i
= 9 + 10√3 i
Answer:
60
Step-by-step explanation:
x and 2x are co - interior angles, sum of co - interior angles is 180,
x + 2x = 180
3x = 180
x = 180 / 3
x = 60
{y=-3x+8
{y=-5x-2
-3x+8 = -5x-2
-3x+5x = -2 - 8
2x = -10
x = -5
y=-3x+8
y= -3*(-5) + 8
у = 15+8 = 23
Answer: (-5, 23)
