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:



Step-by-step explanation:
28-(√144)^2
28-(12)^2
28-144= -116
√625= 25
Answer:
9000000+400000+50000+2000+700+20+9
1.) √32 = 5.7
2.) -60/12 = -5
3.) π-π = 0
4.) √81/4 = 4.5