Answer:
29
Step-by-step explanation:
-9+21= 21
-12+4=-8
21-(-8)=29
He is false the equation should be as follows
Answer:
20 square units
Step-by-step explanation:
If Polygon C has an area of 40 square units, and we are told that Polygon D is a copy of Polygon C but with a scale factor of 1/2, then everything for Polygon D would just be one-half of what it was for Polygon C. Thus, the area would be half of 40 square units, or, 20 square units.
The answer is D
Steps
Take the root of both sides and solve
