Answer: 130
In order to solve for <4, you need to know that supplementary angles add up to 180°. 
<3 = 50
180 - 50
130
**For future questions**
1. The sum of the interior angles of a triangle is 180°
2. Alternate interior angles are congruent
3. The exterior angle of a triangle is the sum of the nonadjacent interior angles
See attachment below. 
 
        
        
        
Answer:
22 onces
Step-by-step explanation:
16 ounces in a pound
5-3=2
2x16=32
32-10=22
 
        
                    
             
        
        
        
40×4×4=640
b=20 h=4
using formula: 
1/2×base×height
1/2×20×4=40
its says scale by factor 4:
b=80 h=16
using formula: 
1/2×base×height
1/2×80×16=640
answer------>>>>640cm^2
 
        
             
        
        
        
<h2>'
 ' in the form of
' in the form of  - b.
 - b.</h2>
Step-by-step explanation:
We have,
 + 8x + 15
 + 8x + 15
To express  + 8x + 15 in the form of
 + 8x + 15 in the form of   - b = ?
 - b = ?
∴  + 8x + 15
 + 8x + 15
Adding and subtracting 1, we get
=  + 8x + 15 + 1 - 1
 + 8x + 15 + 1 - 1
=  + 8x + 16 - 1
 + 8x + 16 - 1
=  + 2(x)(4) +
 + 2(x)(4) +  - 1
 - 1
Using the algebraic identity,

= 
Thus,  in the form of
 in the form of  - b.
 - b.