Use Computation Strategies for Basic Number Facts. You would use Addition Strategies to find 2 +8.
        
                    
             
        
        
        
Answer:
6.7
Step-by-step explanation:
a2 + b2 = c2
6 2 + b2 = 9 2
36 + b2 = 81
<u>-36 .        - 36</u>
0 .             45
45 2
6.7
 
 
        
                    
             
        
        
        
Answer:
Y=mx+b Is a linear equasion because if you plot the x and y on a graph it always shows a straight line.
Step-by-step explanation:
For example, y=7x+9,
When x is 1 y is 16, and
 when x is 2 y is 23.
When you put those two points on a graph and connect the dots with a ruler, you get a straight line, and you will automatically find that when x is 3 y is 30. 
 
        
                    
             
        
        
        
In a trapezoid, two opposite sides are parallel and are called bases.
In this trapezoid, the top and bottom sides are parallel and are the bases.
The right side that intersects both bases is a transversal.
When parallel lines are cut by a transversal, same-side interior angles are supplementary. The measures of supplementary angles add to 180 deg.
x + 72 = 180
x = 180 - 72
x = 108 deg