Answer:
P(A) = 0.1620 , P(A|B) = 0.0707
Step-by-step explanation:
Total people = 10 + 15 + 20 = 45 , Sophomores = 10, Juniors = 15 , Seniors = 20
P(A) , exactly 3 juniors selected = (15 c 3) (30 c 2) / (45 c 5) = (455 x 435) / 1221759 = 0.1620
P (B) , exactly 2 seniors selected = (20 c 2) (25 c 3) / (45 c 5) = (190 x 2300)/ 1221759 = 0.3576
P(A|B), exactly 3 juniors & exactly 2 seniors selected = P (A∩B) / P (B)
(15 c 3) (20 c 2) / (45 c 5) = (455 x 190) / 1221759 = 0.0707
Answer: y<3
Step-by-step explanation:
Answer:
15 or -4
Step-by-step explanation:
SAS
They share two sides, one marked by the red lines, and the line they share in the middle. They also share the angle of that middle line, at the bottom.
The angle is between the sides, so it’s SAS
The
measure of an exterior angle of a triangle is the sum of the measures of two remote
interior angles
Accordingly, the measure of angle JKM (which is an exterior angle of a triangle KLM) is the sum of measures of angles M and L
m(<JKM ) = m(<M) + m(<L) = 25 + 25 =
50 degrees
I hope that
helps!
- .-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
and One
question per one post, please...
