Answer:
0.0879 is the probability that out of 5 randomly selected consumers, three are comfortable with delivery by drones.
Step-by-step explanation:
We are given the following information:
We treat drone deliveries as a success.
P(consumers comfortable having drones deliver) = 25% = 0.25
Then the number of consumers follows a binomial distribution, where
where n is the total number of observations, x is the number of success, p is the probability of success.
We have to evaluate:
P(Exactly 3 customers out of 5 are comfortable with delivery by drones)
Here,
Putting values, we get,
0.0879 is the probability that out of 5 randomly selected consumers, three are comfortable with delivery by drones.
Answer:
1 loaf is 3 ,10 and 2
2 loafs are 6 , 20 and 4
4 loafs are 12 , 40 and 8
Step-by-step explanation:
u times 3 x 2 to get the 6 and so on
The answer is 1/5
hope this helps
The answers are x = -1, 1, i√7/3, -i√7/3.
Solution:
Solving by making a u-substitution, we let u = x² and rewrite the equation in quadratic form.
9u² - 2u - 7 = 0
We can now solve the quadratic equation by factoring. We need two numbers whose sum is -2 and whose product is -7. In this case, it would have to be 7 and -1, considering the term 9u². Hence, we can also write our equation in the factored form
(u - 1)(9u + 7) = 0
Now we have a product of two expressions that is equal to zero, which means any u value that makes either (u - 1) or (9u + 7) zero will make their product zero.
u - 1 = 0 => u = 1
9u + 7 = 0 => u = -7/9
We substitute back x² = u to calculate for x.
u = 1 => x² = 1 => x = -1, 1
u = -7/9 => x² = -7/9 => x = i√7/3, -i√7/3
Therefore, the solutions are −1, 1, i√7/3, and -i√7/3.<span> </span>