A group of 6 judges is randomly selected from a group of 6 teachers and 6 student volunteers. How many possible groups of judges consist of 2 teachers and 4 students?

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or  

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

m∠a is 90°

m∠b is 40°