Answer: A. . . . . . . . . .
I can’t do that check mark thing so I’ll use ! instead.
!12+2!8-12!2
!12 2!8
2!3+2!8-12!2
!8 2!2
2!3+2x2!2-12!2
2x2!2 4!2
2!3+4!2-12!2
2!3+(4!2-12!2)
2!3-8!2
The product that results from multiplying the same number over and over is a POWER of that number. The number of times the number is multiplied by itself is represented by the exponent.
Answer: Power
Answer:
1 / 16
Step-by-step explanation:
Number of options = 4
Number of correct answers = 1
Number points gained for a correct answer = 1
Number of points lost for an incorrect answer = 1/4 = 0.25
Probability of choosing a correct option = 1/4
Probability of choosing an incorrect option = 3/4
x ____ 1 ______ - 1/4
P(x) __ 1/4 ______ 3/4
Expected gain or loss :
E(x) = Σx*p(x)
E(x) = (1 * 1/4) + (-1/4 * 3/4)
E(x) = 1/4 - 3/16
E(x) = (4 - 3) / 16
E(x) = 1 /16
A gain of 1/16