Answer:
1/5
Step-by-step explanation:
Total marbles = 20
Black marbles = 10
(10/20) x (4/10)
= (1/2) x (2/5)
= 2/10
= 1/5
3/20+4/19= 137/380
4
B. 30
3x + 2x + x = 180 (angle sum of a triangle is 180)
6x = 180
x = 30
First bank last function
Second blank, the middle function
Third blank, middle function
Fourth blank, first function
7.8
the answer is
