The solution
is mathematically given as

- P(X=3)= 0.17
<h3>What is the
solution 
?</h3>
Generally, the equation for the Probability of P(X=3) is mathematically given as
b)

Therefore

P(X=3)= 0.17
c)


a)

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Answer:
13) 
14) 
15) 
16) 
Step-by-step explanation:
13) 
14) 
15) 
16) 
Answer:
z = 21 ; y= 16
Step-by-step explanation:
first of all we have to isolate a variable.
In second expression we can obtain:
3y = 2z+6
y = 2/3 z + 2
now we have to substitute this value in the first equation and solve it
8(2/3z+2)-5z = 23
16/3z + 16 -5z = 23
16z +48 - 15z = 69
z = 21
now we have to substitute z in the second equation:
y = 2/3 (21) +2
y = 14+ 2 = 16
y = 16