Select all irrational numbers. 9√ 12−−√ 16−−√ 20−−√ 25−−√

sqrt 25

Step-by-step explanation

If you attempt to rationalize 25 you will get 5 times 5 which isn't a ration. Therefore, the sqrt of 25 is irrational.

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

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.