Answer:
A.
Step-by-step Explanation:
P(A or B) = P(A)+P(B)-P(A and B)
Now
Putting the givens
0.68 = 0.2 + P(B) - 0.12
P(B) = 0.68 - 0.2 +0.12
P(B) = 0.6
Answer: <u>0.4032</u>
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solution:-
given that p = 0.30 , n = 17
p(x > 5) = 1 - p(x ≤ 5)
= 1 - (p(x = 5) + p(x = 4)+ p(x = 3)+ + p(x = 2)+ p(x = 1)+ p(x = 0))
= 1 - (0.2081+0.1868+0.1245+0.0581+0.0169+0.0023)
= 1 - 0.5968
= 0.4032
Answer:
3/22
Step-by-step explanation:
Convert to the same denominator and divide like normal because the two negatives cancel each other out.
H = - 16 t² + 32 t + 9
The maximum height is at the vertex of the parabola:
t = - b / (2 a ) = - 32 : ( - 32 ) = 1 s
The ball will reach maximum height in 1 second.
h max = - 16 * 1² + 32 * 1 + 9 = - 16 + 32 + 9 = 25 m
The maximum height is 25 m.