The answer to this question is c
Answer:
4(9a-4)
Step-by-step explanation:
Answer : The correct options are:
DE + EF > DF
5 < DF < 13
Δ DEF is a scalene triangle.
Step-by-step explanation :
As we know that there are three types of triangle.
(1) Equilateral triangle : It is a triangle in which the three sides and angle are equal.
(2) Isosceles triangle : It is a triangle in which the two sides and two angle are equal.
(3) Scalene triangle : It is a triangle in which the three sides and angle are not equal.
Now we have to determine the length DF.
using Pythagoras theorem:
![(Hypotenus)^2=(Perpendicular)^2+(Base)^2](https://tex.z-dn.net/?f=%28Hypotenus%29%5E2%3D%28Perpendicular%29%5E2%2B%28Base%29%5E2)
![(9)^2=(Perpendicular)^2+(4)^2](https://tex.z-dn.net/?f=%289%29%5E2%3D%28Perpendicular%29%5E2%2B%284%29%5E2)
![81=(Perpendicular)^2+16](https://tex.z-dn.net/?f=81%3D%28Perpendicular%29%5E2%2B16)
![(Perpendicular)^2=81-16](https://tex.z-dn.net/?f=%28Perpendicular%29%5E2%3D81-16)
![(Perpendicular)^2=65](https://tex.z-dn.net/?f=%28Perpendicular%29%5E2%3D65)
![Perpendicular=8.06](https://tex.z-dn.net/?f=Perpendicular%3D8.06)
The length DF = 8.06 unit
So, we can say that:
DE + EF > DF
Hence, from the given options we conclude that, the correct options are:
DE + EF > DF
5 < DF < 13
Δ DEF is a scalene triangle.
Answer:
2m+4 is the answer
Step-by-step explanation:
Answer:
without
Step-by-step explanation:
Anything without a decimal is greater than something that does.