2/3
2/9
6/7
5/9**
i think 5/9
click on the pic

2/9

Step-by-step explanation:

We have 3 choices

P( consonant) = number of consonants/ total

                       = 1/3

Then a vowel

P( vowel) = number of vowel/ total

                       = 2/3

P(consonant, vowel) = 1/3 * 2/3 = 2/9

okay..i will pick 8!

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.