Answer:

Step-by-step explanation:
If we call x the number of correct questions obtained in the 9 attempts, then:
x is a discrete random variable that can be modeled by a binomial probability distribution p, with n = 9 trials.
So, the p of x successes has the following formula.

Where:
n = 9
p = 0.6
We are looking for P(x<4)
By definition:

Then:


Answer: It is C because if you organize the equation numerically the equation is 18x^3+30x^2+12x+10. So it is 18.
Answer: A
Step-by-step explanation:
Area= Base x Height
Answer:

Step-by-step explanation:
Answer:
Area = base * height
224 = 16 * height
height = 14
The height is 14 centimeters.
Your answer is c.