The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely.

81x2 – 49

The value of a is .

The value of b is .

The product of the prime factors is

a=9x

b=7

(9x-7)(9x+7)

Step-by-step explanation:

81x^2-49=(9x)^2 - 7^2=(9x-7)(9x+7)

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.

the answer would be 44.79

plz mark brainliest

step-by-step explanation: