Answer:
14/95
Step-by-step explanation:
5 red, 8 blue, and 7 green = 20 marbles
P(blue ) = blue/total = 8/20 = 2/5
No replacement
5 red, 7 blue, and 7 green = 19 marbles
P(blue ) = blue/total = 7/19
P(blue, no replacement, blue) = 2/5* 7/19 =14/95
Answer:
Step-by-step explanation:
not sure sorry
Perimeter of the shape is 2(AB) + 2(BC)
AB = sqrt((7 - 5)^2 + (3 - 5)^2) = sqrt(2^2 + (-2)^2) = sqrt(4 + 4) = sqrt(8) = 2.83
BC = sqrt((3 - 7)^2 + (0 - 3)^2) = sqrt((-4)^2 + (-3)^2) = sqrt(16 + 9) = sqrt(25) = 5
Perimeter = 2(AB) + 2(BC) = 2(2.83) + 2(5) = 5.66 + 10 = 15.7
Answer:
13-gon
Step-by-step explanation:
The sum of the interior angles of a polygon with n sides is:
S = 180° (n − 2)
If S = 1980°, then:
1980° = 180° (n − 2)
11 = n − 2
n = 13