Assume that there are three airlines from which to choose, each with a number of flights per day, and an on-time percentage shown below. (assume that delays occur randomly.) a traveler selects a flight at random, and it arrives on time.
airline num. of flights on-time perc.
east-west air 4 60
air one 3 50
international air 6 80

(1) what is the probability that the traveler flew on east-west air?

(2) what is the probability that the traveler flew on air one?

(3) what is the probability that the traveler flew on international air?

And explain how you got it so i can understand future problems : 3

What is the slope of a line that is perpendicular to y = 3x + 1

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.