1. 4y/4 + 2x for y = 6, x = 2? 2. 8x /(x - 1) + 4 for x = 3?

3. 3(x - y) - 5 for x = 7, y = 4?

4. (x - 5)5 for x = 9?

5. 6y/5 for y = 30?

6. 10 + 2(3x - 2) for x = 4?

7. 12/y - 2 for y = 3?

8. 11 + x(12 - 2x) for x = 2?

9. xy + 2x -10 for x = 3, y = 2?

10. 3x(x - 5) for x = 10?

11. 75 - 7x + 5 for x = 2?

6:04

Systems of equations with substitution: 9x+3y=15 & yx=5 (video)

Khan Academy

Apr 29, 2011

Step-by-step explanation:

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.

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !