Answer:
Step-by-step explanation:
d is true
Answer:
4x4=? then we have 2x2=?
Step-by-step explanation: H-JJ-
Focus on triangles DFC and DFE:
- They are both right triangles because DF is perpendicular to EC
- DC=DE
- DF is a common side
So, the two triangles are congruent. It follows that CF=FE, and in particular

And since x=3, the length of EF is

Answer:
The right answer is : f(-4)=5