A bookstore had 81 copies of a magazine. Yesterday it sold 7\9 of them. How many copies were sold yesterday? Write your answer in simplest form.

63

Step-by-step explanation:

81 x 7/9 = 63

To calculate, multiply 81 x 7. Then divide that total by 9.

answer: a

step-by-step explanation:

10.2 units

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

you.