I think 71 is B
and 72 is D.
Answer:
It is binomial:
p= 0.75 = 75%
1-p = 0.25 = 25%
N = 10
k=7
"seven successes in 10 trials"
(10 choose 7) (0.75)^7 ( 0.25)^3 =
(10*9*8 / 3*2) * (0.75)^7 ( 0.25)^3 =
(5*3*8) (0.75)^7 ( 0.25)^3
120 (0.75)^7 ( 0.25)^3
= 0.25028228759765625
or just over 25%
Step-by-step explanation:
Answer:
3V/B = H
Step-by-step explanation:
1. Multiply both sides by 3.
2. Divide by B.
By adding two positives together, or a big positive number with a small negative number.
Answer:
7 and 14
Step-by-step explanation: