Answer:
EF = 8.8 cm
Step-by-step explanation:
In the given right angled ΔDEF, DE is the hypotenuse while EF and DF are adjacent sides. So that applying the Pythagoras theorem, we have;
=
+
=
+
=
+
262.44 = + 184.96
= 262.44 - 184.96
= 77.48
EF =
= 8.8023
EF = 8.8 cm
The length of side EF is 8.8 cm.
Answer:
section 3
Step-by-step explanation:
we have
----> inequality A
The solution of the inequality A is the shaded area above the solid line y=x/4
-----> inequality B
The solution of the inequality B is the shaded area below the solid line y=x-3
therefore
The solution of the system of inequalities is the shaded area in the section 3
see the attached figure
