It’s 9,831.5, nine thousand height hundred thirty one point five
Answer:
X-12
X×4
X + 7
X x 2/3
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given
Represent Fred with F; Norman with N and Dave with D.


Required
Determine the arithmetic mean of F and N
First, we have that:

Substitute 44 for D

Subtract 44 from both sides


Arithmetic mean of F and N is calculated as follows:



Answer:
the two triangles are congruent because they have the same sides and angles.