A middle school held a Career Exploration Day where students could choose to hear an adult talk about his or her career. Out of the 39 middle-school students, 13 went to hear the designer speak. What is the probability that a randomly selected student went to hear the designer?

Write your answer as a fraction or whole number.

1/3

Step-by-step explanation:

39 divided by 13 comes out to 3, meaning that 1 out of 3 students chose to hear the designer speak.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

it is true

step-by-step explanation:

all the combinations add up i used   calculator