Answer:
P(X=0) = 0.25
P(X=1) = 0.50
P(X=2) = 0.25
Step-by-step explanation:
The possible outcomes of this event are: BB, BG, GB and GG.
There is one out of four events (GG) in which there are two girls (X=2).
There is one out of four events (BB) in which there are no girls(X=0).
There are two out of four events (GB and BG)) in which there is one girl (X=1).
Therefore, the probability distribution of X is:
P(X=0) = 1/4 = 0.25
P(X=1) = 2/4 = 0.50
P(X=2) = 1/4 = 0.25
Answer:
x = 6/√3 , y = 12/√3
Step-by-step explanation:
sin 60° = opposite /hypothenus
√3/2 = 6/y
cross multiply
√3y=6 x 2 = 12
y = 12/√3
Tan 60° = opposite/adjacent
tan 60° = √3
√3 = 6/x
√3x= 6
x = 6/√3
Answer:
16.5 inches
Step-by-step explanation:
Use the Pythagorean Theorem
a² + b² = c²
a² + 13² = 21²
a² + 169 = 441
Subtract 169 from both sides
a² = 272
Take the square root of both sides
a = 16.4924225025
Rounded
a = 16.5 inches
D = rt
d/r = t
d/t = r
d = tr
incorrect one is : r = t/d
