Hey there!! 
We know angle DEC = angle AEB 
Hence, 
... 4x + 12 = 5x - 10 
... - x = - 22 
... x = 22 
4 ( 22 ) + 12 
88 + 12 
100° is the answer. 
Hope my answer helps!
 
        
             
        
        
        
2-29 it was b but if you lo
        
             
        
        
        
Answer:
2 Significant Figures
Step-by-step explanation:
The A and the .
 
        
             
        
        
        
Given:
A right rectangular prism is packed with cubes of side length  inch.
 inch.
Prism is packed with 15 cubes along the length, 6 cubes along the width, and 5 cubes along the height.
To find:
The volume of the prism
Solution:
Side length of each cube  inch.
 inch.
15 cubes along the length, so length of prism is

6 cubes along the width, so width of prism is

5 cubes along the height, so height of prism is

Now,
Volume of rectangular prism is





Therefore, the correct option is B.