In a survey at a local college, 18% of students reported that they do not own a mobile device with internet capabilities. if 20 students are selected at random, find the probability that at most 5 students don't own a mobile device with internet capabilities.

0.64

Step-by-step explanation:

The probability that randomly selected student doesn't own a mobile device with internet capabilities is and the probability that randomly selected student owns a mobile device with internet capabilities is

If 20 students are selected at random, the probability that at most 5 students (0 students, 1 student, 2 students, 3 students, 4 students or 5 students) don't own a mobile device with internet capabilities is

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x