8x + y=-16
-3x + y=-5

(-1,-8)

Step-by-step explanation:

8x + y=-16

-3x + y=-5

Multiply the second equation by -1

3x - y=5

Add this to the first equation

8x + y=-16

3x - y=5

11x    = -11

Divide each side by 11

11x/11 = -11/11

x = -1

Now we need to find y

-3x +y = -5

-3(-1) +y = -5

3+y = -5

Subtract 3 from each side

3-3+y = -5-3

y = -8

g

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.