Which expression is equivalent to 1/49 a.7^-1 7^-1 b.7^8* 7^-6 c. 7^-5*7^3 d. 7^7* 7^-9 e.7^-2* 7^4

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.