9514 1404 393
Answer:
   $27.54
Step-by-step explanation:
The straightforward way to do this is to compute the tax and total on each amount, then add those together. There is an easier way.
   ($12.50 + 0.08·12.50) + ($13.00 + 0.08·13.00) = $12.50·1.08 +13.00·1.08
   = 1.08($12.50 +13.00)
   = 1.08·$25.50
   = $27.54
Together, Ron and Harry paid a total of $27.54.
 
        
             
        
        
        
Answer:
2
Step-by-step explanation:
because line a d divided the triangle ABC is into equal parts therefore line BD is equal to line DC which is equal to 2
 
        
             
        
        
        
Answer:
The probability that at least one of the children get the disease from their mother is P=0.7125.
Step-by-step explanation:
This can be modeled as a binomial random variable.
The parameter p=0.34 is the probability of a child being infected, and is constant and independent of the other events.
The parameter n=3 is the number of children  (sample size).
Then, we have to calculate the probabilty that at least one of the children get the disease from their mother. That is:

The probability of exactly k children being infected can be calculated as:

Then, the easiest way to calculate this probability is using the complement: the value of the probability is 1 (or 100%) less the probability that no children gets infected.
