Problem 1.1 A submarine starts at 0 units and has groups of 3
floats and groups of 4 anchors attached.
Select all of the expressions that would make the
submarine's final position positive.
(Select all that apply.)
1-(5)(3)+(2)(-4)
1 (5)(3)-(2)(-4)
-(5)(3)-(2)(-4)
(2)(3)+(5) (-4)
-(2) (3) -(5)(-4)
(2)(3)-(5)(-4)

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

i think it is c hope that

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.