Answer:
21
Step-by-step explanation:
3^2=9
9+12=21
Keep it up
The plotted point will be reflected across the y-axis.
Answer:
AAS
Step-by-step explanation:
Answer:
+5 is greater that -5 and is also a opposite integer.
Answer:
p=43 a=78
Step-by-step explanation:
im assuming this is a triangle
perimeter is 18+12+13=43
area is 12*13=156 then divide by 2 =78