Answer:
100% = $28
Therefoe 1 % = $28/100
1% = $0.28
20% tip = 20 x $0.28 =$5.60
Step-by-step explanation:
Answer:

Step-by-step explanation:
Recall that a <em>probability mass function</em> defined on a discrete random variable X is just a function that gives the probability that the random variable equals a certain value k
In this case we have the event
“The computer will ask for a roll to the left when a roll to the right is appropriate” with a probability of 0.003.
Then we have 2 possible events, either the computer is right or not.
Since we have 4 computers in parallel, the situation could be modeled with a binomial distribution and the probability mass function
This gives the probability that k computers are wrong at the same time.
Answer:
$16.60
Step-by-step explanation:
2.5x + 1.25(x - .20) = 31.25
2.5x + 1.25x - .25 = 31.25
3.75x - .25 = 31.25
3.75x = 31.25 + .25
3.75x/3.75 = 31.50/3.75
x = 8.40
y = x - .20
y = 8.20
1x + 1y = 16.60
Probability of 2 sets going to tie-breaker = 0.19*0.19 = 0.0361
there are 3 ways that 2 out of 3 sets are tiebreakers
so required probability = 3 * 0.0361 = 0.1083
= 10.83%