k = 12
cancel out the r on both sides
then divide -144 by -12.
you get 12.
Idk what are the possible answers
on the left yes is square
no on the left is rectangle
yes on the right is square
all no on the rights can be triangle
Step-by-step explanation:
The answer is 21.
First you Add both AB and BC which is 10x +14. Then you put 64 into the equation. 10x+14=64. Subtract 14 from 64 which is 50. So 10x=50. Then divide 10 from 50. which would be x=5. So if you plug it in. It would be 21.
