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TookMurr
20.09.2020 •
Mathematics
Please help me on this
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Ответ:
12x+10
Step-by-step explanation:
Add up the lengths of all sides to find the perimeter
P = x + 2( x+5) + 6(x-1) + 3(x+2)
Distribute
= x + 2x+10 +6x-6 + 3x+6
Combine like terms
=x+ 2x+ 6x+3x + 10 -6+6
= 12x+10
Ответ:
Let A represent the event that the first group approves the proposal.
Let B represent the event that the second group approves the proposal.
We know the following:
P(A) = 0.3
P(B given A) = 1 - 0.3 = 0.7
P(not B given not A) = 1 - 0.3 = 0.7 .
A) P(approved by both groups)
= P(A and B)
= P(A)P(B given A)
= 0.3(0.7)
= 0.21 .
B) P(disapproved by both groups)
= P(not A and not B)
= P(not A)P(not B given not A)
= (1 - 0.3)(0.7)
= 0.49 .
C) This problem might be ambiguous...do you mean exactly one group or at least one group? So, I will use both interpretations.
P(approved by at least one group)
= 1 - P(disapproved by both groups)
= 1 - 0.49
= 0.51 .
P(approved by exactly one group)
= P(second group reverses the first group's decision)
= 0.4 .