What is the solution to the system of equations?

(5, 12)

Step-by-step explanation:

Start with:

3x + 2y = 39

5x -    y  = 13

We'll use elimination by addition/subtraction here.  Multiply the 2nd equation by 2 to obtain -2y, which cancels out the +2y in the first equation:

3x + 2y = 39

10x  -2y  = 26

13x          = 65

Dividing both sides by 13, we get x = 5.

Subbing 5 for x in the 2nd equation, we get 5(5) - y = 13.

Then 25 - y = 13, and      12 - y = 0.  Finally, y = 12.

The solution is (5, 12).

probability for j is 1/4

while

a is 1/6

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24