Answer:
13
Step-by-step explanation:
2(x – 3) + 3y
Let x=5 and y = 3
2(5 – 3) + 3*3
Parentheses first
2(2) +3*3
Multiply
4+9
Add
13
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:
40 miles per hour
Step-by-step explanation:
Driver a could be going 50 miles per hour
Driver c could be going 30 miles per hour
40 miles per hour is in the middle so that could be your answer
X - 4y = 12 ----(1)
y = 1/4 x - 3 ----(2)
(2)*4 ; 4y= x-12
(1) is exactly the same equation with (2)
so there are many solutions (c)