Answer:
4
Step-by-step explanation:
2+2=4
 
        
                    
             
        
        
        
30 ft should be the answer
        
                    
             
        
        
        
Answer:
4.615 in
Step-by-step explanation:
Triangle ABC and ABD are similar because they have two corresponding congruent triangles that is right angle and ∠A. Triangle ABC and BCD are similar because they have two corresponding congruent triangles that is right angle and ∠C. Therefore Triangle ABC, ABD and BCD are similar. Since they are similar, then their sides are proportional in length. 
In triangle ABC, using Pythagoras theorem:
AC² = AB² + BC²
AC² = 12² + 5²
AC² = 144 + 25 = 169
AC² = 169
AC = √169 = 13 in
Using similar triangle for ΔABC and ΔABD:

 
        
             
        
        
        
Answer:
Expressions A, E, and F
Step-by-step explanation:
In general, when negative integers are multiplied; if the negative integers are even, then the product would be positive. But if the negative integers are odd, then the product would be negative.
Thus,
A. (−5)(−0.4)(1.8) = (2.0)(1.8)
                            = 3.6
B. (-45)(-19)(-112) = (855)(-112)
                            = -95760
C. −1(5+17) = -1(22)
                  = -22
D. (−5)(−0.4)(1.8)(−3.25) = (2.0)(-5.85)
                                       = -11.7
E. (-49)(-34)(-12)(-12) = (1666)(144)
                                 = 239904
F. −1(3.5−7) = -1(-3.5)
                   = 3.5
Thus expressions A, E and F have positive products.