Joey had 40 words to study for a spelling quiz, but he only learned 10 of them. His teacher surprised the class by telling them that the quiz would only have 1 of those 40 words on it. If the teacher chose that 1 word randomly, what is the probability that it was one of the words Joey learned

The probability of choosing a word randomly which is   one of the words Joey learned = 1/4

Step-by-step explanation:

Total number of words to be memorized = 40 words

The number of words memorized  by Joey = 10

Let E: Event of randomly choosing a  word that Joey has learned.

P(E)  =

Hence, the probability of choosing a word randomly which is   one of the words Joey learned = 1/4

the correct answer is d

hope this

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi