U can use the second last one
X + 90 = 2x + 40
Answer:
Distribution is NOT binomial.
Step-by-step explanation:
In order to be a binomial distribution, the probability of success for each individual trial must be the same. Since each marksman hits the target with probability Pi, the probability of success (hitting the target) is not necessarily equal for all trials. Therefore, the distribution is not binomial.
In this case, the distribution would only be binomial if Pi was the same for every "ith" marksman.
Answer:
2/3*(7/4)=7/6 hours
Step-by-step explanation:
(X+4)(X-4) is the LCD because you just have to look at the denominators and see what factors or values are not already part of your LCD.