Answer:
The probability is 
Step-by-step explanation:
Let assume that the number of computer produced by factory C is k = 1
So From the question we are told that
The number produced by factory A is 4k = 4
The number produced by factory B is 7k = 7
The probability of defective computers from A is 
The probability of defective computers from B is 
The probability of defective computers from C is 
Now the probability of factory A producing a defective computer out of the 4 computers produced is

substituting values


The probability of factory B producing a defective computer out of the 7 computers produced is

substituting values


The probability of factory C producing a defective computer out of the 1 computer produced is

substituting values


So the probability that the a computer produced from the three factory will be defective is

substituting values


Now the probability that the defective computer is produced from factory A is



Answer:
.73 per pound
Step-by-step explanation:
Take the total cost and divide by the number of pounds
4.38/ 6
.73 per pound
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The beginning steps to solve the equation 6(3x - 7) = 2 is
Step 1: 18x - 42 = 2
Step 2: 18x = 44